JP5487908B2 - Electric heat supply and demand control system and electric heat supply and demand control method for distributed power supply system - Google Patents

Description

  The present invention relates to an electric heat supply and demand control system and an electric heat supply and demand control method for a distributed power supply system in which an agent is provided in each electric heating facility constituting a distributed power supply system, and an electric heat supply and demand output of each electric heating facility is determined by information exchange between the agents. .

  (1) There are the following two types of electric heat supply and demand control methods.

(A) Centralized centralized system: Control system for distributed power sources such as generators by centralized centralized control device As shown in FIG. 3, the centralized centralized control device 100 receives information from the lower control devices 200a to 200d. Based on the information, the control command value and the target value for each control device are obtained, and these are sent back to the control devices 200a to 200d.

(B) Autonomous distributed system: Control system by lower-level devices without a central device such as a centralized control device. As shown in FIG. 4, the autonomous distributed system is configured only by lower-level control devices 200a to 200d. Exchange information with the device and determine the control command value of the device itself.

(2) Application to distributed power system control When the above control method is applied to control of a distributed power system, the system configuration is as follows. However, the “distributed power source” shown below includes not only basic power sources such as gas turbine generators and natural energy generators such as wind power generators and distributed power sources but also basic heat sources such as boiler facilities. Further, “load” includes not only electric power load but also heat load.

  (A) FIG. 5 shows a control processing procedure diagram of the distributed power supply system by the centralized system. The centralized control device 100 receives output status information such as distributed power supplies / loads 300a to 300d from the lower control devices 200a to 200d and optimizes control command values in consideration of weather forecasts, demand forecasts, etc. Calculate them and send them to the lower control devices 200a to 200d. The lower-level control devices 200a to 200d that have received these control command values and the like perform electric heat supply and demand control for the distributed power supplies / loads 300a to 300d.

  (B) FIG. 6 shows a distributed power system control system based on the autonomous distributed system. The control devices 200a to 200d exchange information with each other, calculate control command values for optimizing the distributed power sources / loads 300a to 300d, and individually control the electric power supply and demand for the distributed power sources / loads 300a to 300d based on the results. Optimize electric power supply and demand control for the entire system.

  Mutual information exchange in the control devices 200a to 200d at this time is performed between agents based on the contract net protocol, and the electric heat output of each facility is determined and controlled by this information exchange (for example, see Patent Document 1). The information exchange process of this patent document 1 is made into process sequence S1-S4 shown in FIG. Each agent is composed of a computer resource and software for executing a desired algorithm using the computer resource.

  (S1) Agent AG1 presents tasks to other agents AG2 to AG4.

  (S2) The agents AG2 to AG4 that have received the task determine whether the task can be performed by looking at the operating state of the distributed power source / load to be controlled, and send it back to the agent AG1.

  (S3) The agent AG1 that has received the reply determines task allocation and output for its own agent AG1 and agents AG2 to AG4 from the received result, and notifies it.

  (S4) The agents AG1 to AG4 that have received the agent AG1 and the notification send an output command to the controlled equipment according to the task.

JP 2009-1000055 A

  As in Patent Document 1, when electric power supply and demand control of a distributed power supply system is performed by an autonomous distributed method using a multi-agent system, it is necessary to perform output control of equipment including allocation of heat generated by power generation.

  As an example, consider a distributed power supply system as shown in FIG. In the figure, a generator G1 means a facility that generates electric power and heat such as cogeneration, and a generator G2 means a monogenerator that generates only electric power. The generator G1, the generator G2, the commercial power supply AC, The power loads EL1 are connected to each other via a distribution line. A heat load TL1 provided integrally with the electric power load EL1 is connected by thermal piping between the generator G1 and the boiler equipment B1 and the generator G1 that serve as heat supply equipment. Each of the equipment G1, G2, AC, B1, TL1, and EL1 has a controller that incorporates an electric heat supply and demand control algorithm in an autonomous decentralized manner, and these agents communicate with other agents. Performs coordinated operation of quantity distribution and performs electric heat supply and demand control of the controlled equipment.

  In the system as shown in FIG. 8, normally, power from all power sources such as generators can be accommodated for the power load. However, since heat generated during power generation has a large loss of heat energy due to transportation, heat transportation may be limited to places close to the supply target. For this reason, it is necessary to perform electric power supply and demand control in consideration of a route from a facility capable of supplying thermal energy such as cogeneration and boiler equipment to a heat load.

  In order to perform electric power supply and demand control considering the heat transport route, the easiest solution is to set and store all the heat route information statically in each agent and refer to that information for heat transfer. Provide facilities that can be accommodated.

  However, in the above solution, it is necessary to update / correct the heat path information of each control device due to the arrangement or increase / decrease of the system equipment, and in addition, heat transfer that is inappropriate in terms of efficiency and cost due to heat energy loss due to the heat path Therefore, it becomes difficult to carry out heat supply and demand control that responds flexibly to changes in the heat path and accurate heat supply and demand control. In particular, on-line heat supply and demand control becomes difficult when the operating status of the equipment (the amount of heat energy generated by the generator equipment, the amount of heat stored in the equipment, etc.) changes from moment to moment.

  An object of the present invention is to provide an appropriate heat supply and demand control in consideration of a heat energy loss due to a heat supply and demand route between facilities in an electric heat supply and demand control of a distributed power supply system, and further capable of responding to a change in the operation status of the facility online. An object is to provide an electric heat supply and demand control system and an electric heat supply and demand control method for a distributed power system.

  In order to solve the above-mentioned problems, the present invention obtains information on the heat pipes connecting between facilities capable of supplying and supplying heat energy and information on the operating status of these facilities, and heat energy in the heat supply and demand path between the facilities. The energy value, which is an index for determining whether there is value for supplying and supplying electric heat between the equipment, including losses and changes in the operating status of the equipment, is determined. Based on this energy value, the equipment to supply and supply electric power and its output are determined. The electric heat supply and demand control system and the electric heat supply and demand control method are characterized as follows.

(Invention of the system)
(1) A distribution line and / or a heat pipe connected between an electric heat supply side facility capable of generating only electric power or electric power and heat and an electric heat load side facility supplied only with electric power or supplied with electric power and heat. An electric heat supply and demand control system for a distributed power supply system that determines an electric heat supply and demand output of each facility by exchanging information between agents provided in each facility for electric heat supply and demand control between each facility in the distributed power supply system,
One of the agents obtains heat piping information connecting between facilities capable of supplying and supplying thermal energy by exchanging information with other agents, and information on the operating status of these facilities, and a heat supply and demand route between the facilities. The energy value, which is an index for judging whether there is value for supplying and supplying electric heat between the equipment, including the loss of thermal energy and the change in the operating status of the equipment, and the equipment that supplies and supplies electric heat based on this energy value and its A means for determining an output is provided.

(2) The one agent is
By exchanging information with other agents, calculating the power load for each power path in each facility, and calculating the heat load for each heat path;
A means for calculating the first energy value including the thermal energy generated by the power generation on the basis of the cost required for the power generation by the electric heat supply side facility;
Means for calculating the second energy value by converting the electricity price supplied by the electric heat supply side facility with a commercial power source and the heat price when the heat is supplied by the heat supply facility;
Means for determining a difference between the first and second energy values;
When the difference in energy value is equal to or greater than that, the electric heat supply side facility having the largest difference in energy value of the electric heat supply side facility is operated, and the first energy value is lower than the second energy value. Means for supplying electric heat from the commercial power source and the heat supply facility without stopping or operating the electric heat supply side facility;
Means for subtracting the power generation output assigned to the electric heat supply side facility or the commercial power source and the heat supply facility or the heat output corresponding thereto from the power load amount and heat load amount, and calculating the remaining power load amount and heat load amount;
Means for returning to the process of allocating other equipment as electric heat supply equipment based on the energy value until there is no remaining power load, if there is the remaining power load;
If the energy value difference is low, means for determining the power output purchased from the commercial power source and the heat output from the heat supply facility;
It is provided with.

(3) When the electric heat supply facility is a gas turbine generator, the calculation of the first energy value is as follows:
Means for obtaining a purchased gas heat quantity H (= e * Pout) necessary for generating electric power from the amount Pout that can be output with respect to the electric power load amount using the power generation efficiency e of the gas turbine generator;
Means for obtaining a purchase gas volume V (= H / Hm) from the purchase gas heat quantity H and the heat quantity Hm per 1 cubic meter;
Means for obtaining a purchase gas price Pe (= V * U) from the purchase gas volume V and purchase gas unit price U;
Means for obtaining, as the energy value Ee (= C + Pe) of the gas turbine generator, a value obtained by combining the purchased gas price Pe and the cost C required when the gas turbine generator generates electricity;
It is provided with.

(4) The calculation of the second energy value converted into the commercial power source and the heat supply facility is as follows:
Means for obtaining a commercial power price Pu (= Pout * Up) using a power unit price Up of a commercial power source that changes with time with respect to a power amount Pout that can be output from the facility;
Means for obtaining the purchased gas heat quantity Hb (= eb * Ha) using the efficiency eb of the heat supply equipment from the assigned quantity Ha for the thermal load;
Means for obtaining a purchased gas volume Vb (= Hb / Hbm) from the purchased gas calorie Hb and the calorie Hbm per 1 cubic meter;
Means for obtaining a purchase gas price Pb (= Vb * U) from the purchase gas volume Vb and the purchase gas unit price U;
Means for obtaining the energy value Eb (= Pu + Pb) by adding the power price Pu of the commercial power supply and the purchase gas price Pb;
It is provided with.

(5) The calculation of the heat load when the electric heat supply facility has a heat storage tank,
From the current heat load amount H (t), the current heat storage amount S (t), the current time t, and the elapsed time t≡, the converted heat load amount C (t) is obtained by the following equation:

  Means for converting the converted heat load C (t) to the heat load is provided.

(6) When the start-up cost of the electric heat supply equipment is high, the calculation of the cost is
From the start-up cost I, the expected operating time T (t), the thermal load H (t ′) after the elapsed time t ′, the rated heat output W, the current time t, and the elapsed time t≡ The starting cost B (t) converted by

  A means for including the activation cost B (t) in the cost is provided.

(Invention of method)
(7) A distribution line and / or a heat pipe connected between an electric heat supply side facility that can generate only electric power or electric power and heat, and an electric heat load side facility that is supplied only with electric power or supplied with electric power and heat An electric heat supply and demand control method for a distributed power supply system that determines an electric heat supply and demand output of each facility by exchanging information between agents provided in each facility for electric heat supply and demand control between each facility in a distributed power supply system,
One of the agents obtains heat piping information connecting between facilities capable of supplying and supplying thermal energy by exchanging information with other agents, and information on the operating status of these facilities, and a heat supply and demand route between the facilities. The energy value, which is an index for judging whether there is value for supplying and supplying electric heat between the equipment, including the loss of thermal energy and the change in the operating status of the equipment, and the equipment that supplies and supplies electric heat based on this energy value and its The output is determined.

(8) The one agent is
Calculating the amount of power load for each power path in each facility by exchanging information with other agents, and calculating the amount of heat load for each heat path;
Calculating the first energy value including the thermal energy generated by the power generation based on the cost required for power generation by the electric heat supply side facility;
A step of calculating the second energy value by converting the electric power supplied by the electric heat supply side facility to the power price when commercial power is supplied and the heat price when the heat is supplied from the heat supply facility;
Determining a difference between the first and second energy values;
When the difference in energy value is equal to or greater than that, the electric heat supply side facility having the largest difference in energy value of the electric heat supply side facility is operated, and the first energy value is lower than the second energy value. A step of setting the electric heat supply from the commercial power source and the heat supply facility without stopping or operating the electric heat supply side facility;
Subtracting the power output allocated to the electric heat supply side facility or the commercial power source and the heat supply facility or the heat output corresponding thereto from the power load amount and the heat load amount to calculate the remaining power load amount and the heat load amount; and
If there is the remaining power load, returning to the process of assigning other equipment as electric heat supply equipment based on the energy value until there is no remaining power load;
If the energy value difference is low, determining the power output purchased from the commercial power source and the heat output from the heat supply facility;
It is characterized by having.

(9) When the electric heat supply facility is a gas turbine generator, the calculation of the first energy value is as follows:
Obtaining a purchased gas heat quantity H (= e * Pout) necessary for generating electric power from the power output amount Pout with respect to the power load amount using the power generation efficiency e of the gas turbine generator;
Obtaining a purchased gas volume V (= H / Hm) from the purchased gas calorie H and the calorie Hm per 1 rice;
Obtaining a purchase gas price Pe (= V * U) from the purchase gas volume V and purchase gas unit price U;
Obtaining a value obtained by combining the purchased gas price Pe and a cost C required when the gas turbine generator generates electricity as an energy value Ee (= C + Pe) of the gas turbine generator;
It is characterized by having.

(10) The calculation of the second energy value converted into the commercial power source and the heat supply facility is as follows:
A step of obtaining a commercial power price Pu (= Pout * Up) using a power unit price Up of a commercial power source that varies depending on a time zone with respect to a power amount Pout that can be output from the facility;
Obtaining a purchased gas heat quantity Hb (= eb * Ha) using the efficiency eb of the heat supply equipment from the assigned quantity Ha for the thermal load;
Obtaining a purchase gas volume Vb (= Hb / Hbm) from the purchase gas calorie Hb and the calorie Hbm per 1 rice;
Obtaining a purchase gas price Pb (= Vb * U) from the purchase gas volume Vb and purchase gas unit price U;
A step of obtaining an energy value Eb (= Pu + Pb) by adding the power price Pu of the commercial power supply and the purchase gas price Pb;
It is characterized by having.

(11) Calculation of the heat load when the electric heat supply facility has a heat storage tank,
From the current heat load amount H (t), the current heat storage amount S (t), the current time t, and the elapsed time t≡, the converted heat load amount C (t) is obtained by the following equation:

  The conversion heat load amount C (t) is used as the heat load amount.

(12) When the start-up cost of the electric heat supply equipment is high, the calculation of the cost is as follows:
From the start-up cost I, the expected operating time T (t), the thermal load H (t ′) after the elapsed time t ′, the rated heat output W, the current time t, and the elapsed time t≡ The starting cost B (t) converted by

  It has the step which includes this starting cost B (t) in the said cost.

  As described above, according to the present invention, each agent has information on heat piping connecting between facilities capable of supplying and supplying thermal energy, and information on the operation status of these facilities, and heat energy loss in the heat supply and demand path between the facilities and To determine the energy value that will be an index for judging whether there is value for electric power supply and demand between the equipment, including changes in the operation status of the equipment, and to determine the equipment to supply and supply electric heat and its output based on this energy value Therefore, appropriate heat supply and demand control can be performed in consideration of heat energy loss through the heat supply and demand path between facilities, and further, heat supply and demand control that can respond online to changes in the operation status of the facility.

The distributed power supply system diagram which shows embodiment of this invention. Energy value calculation algorithm. The block diagram of the electric power supply-and-demand control system of a centralized system. The block diagram of the electric-heat supply-and-demand control system of an autonomous distributed system. The control processing system diagram of a centralized distributed power supply system. The control processing system diagram of the distributed power supply system of an autonomous distributed system. An example of information exchange processing between agents. An example of a distributed power system.

(1) Outline of Electric Heat Supply / Demand Control FIG. 1 is a distributed power system diagram showing an embodiment of the present invention. Each agent acquires information on the heat pipes connecting equipment that can supply and demand thermal energy and information on the operating status of these equipment, including heat energy loss in the heat supply and demand route between each equipment and changes in the operating status of the equipment, An energy value that is an index for determining whether or not there is value for supplying and supplying electric heat between the facilities is obtained, and the facility for supplying and supplying electric heat and its output are determined based on this energy value.

  In the distributed power supply system shown in FIG. 1, the boiler equipment B1 which becomes the generator G1 and the heat supply equipment becomes the heat supply equipment, the heat load TL1 becomes the heat demand equipment, and the electric power supply and demand with the heat pipe P1 laid between these equipments Indicates the system case. In this system configuration, each of the generator G1, the boiler equipment B1, and the thermal load TL1 is given a unique ID for the heat pipe at the time of agent setup as pre-processing, and heat is supplied from which path for each electric heat supply and demand equipment. Or information indicating the route through which heat is supplied. Of each agent, any one agent acquires the above heat piping information by exchanging information with other agents, and uses this information to determine the heat energy loss due to the heat piping. The energy value of electric heat supply and demand is obtained from the operating status, etc., the equipment for supplying and supplying heat and the amount of heat supply and demand are obtained based on this energy value, and the heat supply and demand control at each equipment is commanded to other agents.

  As an example, when a distributed power supply system as shown in FIG. 1 is considered, appropriate heat supply and demand control can be performed in consideration of heat energy loss due to the heat supply and demand path between facilities by performing the overall processing procedure as follows. .

  (S1) The agent of one power load EL1 as a representative of each agent notifies the start of the electric heat supply and demand control to all agents provided in each electric heat supply and demand facility of the system.

  (S2) The agents of the generators G1 and G2, the commercial power supply AC, the boiler facility B1, and the heat load facility TL1, which are the facilities for supplying electric heat that have received the notification of the start of the electric power supply and demand control, operate their own facilities (output information) Etc.) and information necessary for supply and demand control such as heat path information are returned to the agent of the power load EL1.

  (S3) Based on the returned information, the agent of the power load EL1 determines the availability of the facility operation and the output by the output determination algorithm (described later) of the control target facility of each agent.

  (S4) The agent of the power load EL1 returns the result of the process (S3) to each agent.

  (S5) Each agent that receives the processing result executes electric heat supply and demand control in accordance with an output command of each electric heat supply and demand facility to which the agent belongs.

(2) Output decision algorithm of electric heat supply and demand equipment As described in the outline of the electric heat supply and demand control, when a system is configured with a cogeneration system or a monogeneration generator, each output in this embodiment is calculated when calculating the output of each equipment. The agent uses the following algorithm. This algorithm calculates the energy value of each electric heat supply and demand facility, and determines the availability and output of the facility based on this energy value.

  The specific flow is as follows, as shown in FIG.

  (S11) The power load and the heat load are calculated. In this process, the load amount for each path of power and heat supplied from each facility to the electrical heating load side facility is calculated from the information returned from the electrical heat supply side facility in the process (S2).

  (S12) The energy value for each facility is calculated. In this process, the amount of power load calculated in the above process (S11) is calculated as an energy value based on the cost required when the facility generates power. However, for equipment that can supply both electric power and heat, the amount of heat generated during power generation is not always consumed by the heat load, but is discarded if the heat load is satisfied. It means that the energy value in is calculated including the waste heat energy.

  For example, the calculation of the energy value when the equipment is a gas turbine generator is obtained as follows.

  (Step 1) From the amount Pout that can be output with respect to the amount of power load, the purchased gas heat amount H required to generate electric power is determined using the power generation efficiency e of the gas turbine generator.

H = e * Pout (1)
(Step 2) The purchased gas volume V is obtained from the result of the above (step 1) using the amount of heat Hm per square meter.

V = H / Hm (2)
(Step 3) The purchase gas price Pe is obtained from the purchase gas unit price U.

Pe = V * U (3)
(Step 4) A value obtained by combining the cost C required when the gas turbine generator generates power and the purchased gas price Pe is obtained as the energy value Ee of the facility (gas turbine generator).

Ee = C + Pe (4)
(S13) The energy value in the case where the electric power supplied from the electric heat supply side facility is supplied by the commercial power supply and the heat is supplied from the boiler facility is calculated. In this processing, the power price when the power load required for the electric heat supply side equipment in the above processing (S11) is covered by the commercial power supply and the amount of heat generated at the electric heat supply side equipment at that time are effectively used for the heat load. The energy value is calculated as the energy value when the amount of heat generated is added to the price of heat when converted by the boiler equipment and covered by the commercial power supply and the boiler equipment.

  The energy value in terms of commercial power supply and boiler equipment is obtained as follows.

  (Step 11) The commercial power price Pu is obtained by using the power unit price Up of the commercial power source that changes depending on the time zone with respect to the power amount Pout that can be output from the facility.

Pu = Pout * Up (11)
(Step 12) The purchased gas heat quantity Hb is obtained from the assigned quantity Ha for the thermal load using the efficiency eb of the boiler facility.

Hb = eb * Ha (12)
(Step 13) The purchased gas volume Vb is obtained from the result of the above (step 12) using the amount of heat Hbm per 1 cubic meter.

Vb = Hb / Hbm (13)
(Step 14) The purchase gas price Pb is obtained from the purchase gas volume Vb and the purchase gas unit price U.

Pb = Vb * U (14)
(Step 15) The energy value Eb is obtained by adding the power price Pu of the commercial power source and the purchase gas price Pb.

Eb = Pu + Pb (15)
(S14) The difference in energy value is obtained. This process calculates | requires the difference of the energy value of each electric-heat supply side installation calculated | required by process (S12) and (S13).

  (S15) The difference in energy value is compared. If this process is an operation of a system with an emphasis on economy, if the difference in energy value between the facilities is about the same or higher, that is, the required load power is covered by the generators G1 and G2 by single operation or parallel operation. When the cost of the case is about the same as or more than the cost of supplying commercial power and boiler equipment, it is better to operate the generator G1 even if the heat generated by the generator G1 or the like is discarded. Means worth it. In the opposite case, it is assumed that it is more effective to supply the commercial power supply and the boiler equipment without stopping or operating the equipment (generator G1 or the like), and the electric power is supplied from the commercial power supply and the boiler equipment.

  (S16) The power generation output is assigned to the equipment having the largest energy value difference. In this process, when there are two or more facilities having a high energy value by the process (S15), the power generation output is allocated to the facility having the highest energy value, and the heat output associated with the power generation output is allocated to the heat load.

  (S17) The remaining power and heat load are calculated. In this process, the power generation output assigned in the process (S16) and the heat output corresponding thereto are subtracted from the power load amount and the heat load amount in order to determine the equipment to be operated from the next time.

  (S18) The presence or absence of the power load is determined. In this process, even if the electric heat supply output is subtracted by the electric heat supply side equipment, it is determined whether or not the required power load amount remains, and if it remains, the process returns to the process (S11) to return the remaining electric power load. Until the amount runs out, the process of allocating other equipment as electric heat supply equipment based on the energy value is repeated.

  If there is no remaining power load, it is determined that it is no longer necessary to operate the equipment, and the remaining power load is covered by the boiler equipment. This is because the main heat follower operation is performed using a generator that generates power and heat at the same time, so there is no remaining power load and the generator cannot be operated if there is a surplus heat load. It will be covered with boiler equipment.

  (S19) If the energy value difference is low in the determination of the above process (S15), the power output purchased from the commercial power supply and the heat output from the boiler facility are determined. In order to compensate for the remaining power / heat load, this process is calculated when there is no equipment to be operated or when the power load is satisfied.

(3A) Calculation of heat load when the electric heat supply facility has a heat storage tank A facility that has a heat storage tank and can temporarily store exhaust heat (for example, a fuel cell power generation system with a heat storage tank) is a distributed power source When the economical operation using the heat storage in the heat storage tank exists in the grid, the heat storage status of the heat storage tank is repeated every time the process of controlling electric power supply and demand according to the above algorithm is repeated with a cogeneration or monogeneration generator as in the previous period Therefore, it is impossible to effectively use the heat energy stored in the heat storage tank.

  In order to solve this problem, a converted heat load C (t) is defined as in the following equation. In the following equation, H (t) represents the current heat load, S (t) represents the current heat storage amount, t represents the current time, and t ′ represents the elapsed time.

By implementing this in the processing (S13) of the output determination algorithm of each facility, the current heat load amount H (t) and the future heat load amount H (t ′) estimated from past data are taken into consideration. By calculating the command value of equipment, it is possible to control the supply and demand of electricity in consideration of the heat storage status. (3B) Calculation of the cost of equipment with a high start-up cost When calculating the energy value of equipment with a high start-up cost, It may not be selected by the output decision algorithm. Therefore, the following conversion start-up costs are included in the costs necessary for the operation of the equipment, thereby increasing the energy value of the equipment that is not in operation and increasing the proportion of the equipment to be operated.

  However, I means start-up cost, T (t) means expected operation time, and B (t) means converted start-up cost. Further, the expected operation time T (t) is obtained from the estimated thermal load H (t ′) after the elapsed time t ′, the rated heat output W, the current time t, and the elapsed time t≡.

B1 boiler equipment G1 generator (equipment that generates electricity and heat)
G2 generator (equipment that generates electricity only)
AC AC power supply TL1 Thermal load EL1 Electric power load P1 Thermal piping

Claims (12)

A distributed power supply system that connects power supply side equipment that can generate only power or power and heat, and power supply load side equipment that is supplied only with power or that is supplied with power and heat, using distribution lines and / or heat piping Electric power supply and demand control system of a distributed power system that determines the electric heat supply and demand output of each facility by exchanging information between agents provided in each facility,
One of the agents obtains heat piping information connecting between facilities capable of supplying and supplying thermal energy by exchanging information with other agents, and information on the operating status of these facilities, and a heat supply and demand route between the facilities. The energy value, which is an index for judging whether there is value for supplying and supplying electric heat between the equipment, including the loss of thermal energy and the change in the operating status of the equipment, and the equipment that supplies and supplies electric heat based on this energy value and its An electric heat supply and demand control system for a distributed power system, characterized by comprising means for determining an output. The one agent is
By exchanging information with other agents, calculating the power load for each power path in each facility, and calculating the heat load for each heat path;
A means for calculating the first energy value including the thermal energy generated by the power generation on the basis of the cost required for the power generation by the electric heat supply side facility;
Means for calculating the second energy value by converting the electricity price supplied by the electric heat supply side facility with a commercial power source and the heat price when the heat is supplied by the heat supply facility;
Means for determining a difference between the first and second energy values;
When the difference in energy value is equal to or greater than that, the electric heat supply side facility having the largest difference in energy value of the electric heat supply side facility is operated, and the first energy value is lower than the second energy value. Means for supplying electric heat from the commercial power source and the heat supply facility without stopping or operating the electric heat supply side facility;
Means for subtracting the power generation output assigned to the electric heat supply side facility or the commercial power source and the heat supply facility or the heat output corresponding thereto from the power load amount and heat load amount, and calculating the remaining power load amount and heat load amount;
Means for returning to the process of allocating other equipment as electric heat supply equipment based on the energy value until there is no remaining power load, if there is the remaining power load;
If the energy value difference is low, means for determining the power output purchased from the commercial power source and the heat output from the heat supply facility;
The electric heat supply and demand control system for a distributed power supply system according to claim 1, comprising: When the electric heat supply facility is a gas turbine generator, the calculation of the first energy value is
Means for obtaining a purchased gas heat quantity H (= e * Pout) necessary for generating electric power from the amount Pout that can be output with respect to the electric power load amount using the power generation efficiency e of the gas turbine generator;
Means for obtaining a purchase gas volume V (= H / Hm) from the purchase gas heat quantity H and the heat quantity Hm per 1 cubic meter;
Means for obtaining a purchase gas price Pe (= V * U) from the purchase gas volume V and purchase gas unit price U;
Means for obtaining, as the energy value Ee (= C + Pe) of the gas turbine generator, a value obtained by combining the purchased gas price Pe and the cost C required when the gas turbine generator generates electricity;
The electric power supply and demand control system for a distributed power supply system according to claim 2 , comprising: The calculation of the second energy value converted into the commercial power source and the heat supply facility is as follows:
Means for obtaining a commercial power price Pu (= Pout * Up) using a power unit price Up of a commercial power source that changes with time with respect to a power amount Pout that can be output from the facility;
Means for obtaining the purchased gas heat quantity Hb (= eb * Ha) using the efficiency eb of the heat supply equipment from the assigned quantity Ha for the thermal load;
Means for obtaining a purchased gas volume Vb (= Hb / Hbm) from the purchased gas calorie Hb and the calorie Hbm per 1 cubic meter;
Means for obtaining a purchase gas price Pb (= Vb * U) from the purchase gas volume Vb and the purchase gas unit price U;
Means for obtaining the energy value Eb (= Pu + Pb) by adding the power price Pu of the commercial power supply and the purchase gas price Pb;
The electric power supply and demand control system for a distributed power supply system according to claim 2 or 3 , characterized by comprising: Calculation of the heat load when the electric heat supply equipment has a heat storage tank,
From the current heat load amount H (t), the current heat storage amount S (t), the current time t, and the elapsed time t≡, the converted heat load amount C (t) is obtained by the following equation:

The electric power supply and demand control system for a distributed power system according to any one of claims 1 to 4, further comprising means for setting the converted heat load amount C (t) as the heat load amount. When the startup cost of the electric heat supply equipment is high, the calculation of the cost is
From the start-up cost I, the expected operating time T (t), the thermal load H (t ′) after the elapsed time t ′, the rated heat output W, the current time t, and the elapsed time t≡ The starting cost B (t) converted by

The electric power supply and demand control system for a distributed power supply system according to any one of claims 1 to 5, further comprising means for including the activation cost B (t) in the cost. A distributed power supply system that connects power supply side equipment that can generate only power or power and heat, and power supply load side equipment that is supplied only with power or that is supplied with power and heat, using distribution lines and / or heat piping In the electric power supply and demand control method of the distributed power supply system for determining the electric heat supply and demand output of each facility by exchanging information between agents provided in each facility,
One of the agents obtains heat piping information connecting between facilities capable of supplying and supplying thermal energy by exchanging information with other agents, and information on the operating status of these facilities, and a heat supply and demand route between the facilities. The energy value, which is an index for judging whether there is value for supplying and supplying electric heat between the equipment, including the loss of thermal energy and the change in the operating status of the equipment, and the equipment that supplies and supplies electric heat based on this energy value and its An electric heat supply and demand control method for a distributed power supply system, characterized in that an output is determined. The one agent is
Calculating the amount of power load for each power path in each facility by exchanging information with other agents, and calculating the amount of heat load for each heat path;
Calculating the first energy value including the thermal energy generated by the power generation based on the cost required for power generation by the electric heat supply side facility;
A step of calculating the second energy value by converting the electric power supplied by the electric heat supply side facility to the power price when commercial power is supplied and the heat price when the heat is supplied from the heat supply facility;
Determining a difference between the first and second energy values;
When the difference in energy value is equal to or greater than that, the electric heat supply side facility having the largest difference in energy value of the electric heat supply side facility is operated, and the first energy value is lower than the second energy value. A step of setting the electric heat supply from the commercial power source and the heat supply facility without stopping or operating the electric heat supply side facility;
Subtracting the power output allocated to the electric heat supply side facility or the commercial power source and the heat supply facility or the heat output corresponding thereto from the power load amount and the heat load amount to calculate the remaining power load amount and the heat load amount; and
If there is the remaining power load, returning to the process of assigning other equipment as electric heat supply equipment based on the energy value until there is no remaining power load;
If the energy value difference is low, determining the power output purchased from the commercial power source and the heat output from the heat supply facility;
The electric heat supply and demand control method for a distributed power supply system according to claim 7, wherein: When the electric heat supply facility is a gas turbine generator, the calculation of the first energy value is
Obtaining a purchased gas heat quantity H (= e * Pout) necessary for generating electric power from the power output amount Pout with respect to the power load amount using the power generation efficiency e of the gas turbine generator;
Obtaining a purchased gas volume V (= H / Hm) from the purchased gas calorie H and the calorie Hm per 1 rice;
Obtaining a purchase gas price Pe (= V * U) from the purchase gas volume V and purchase gas unit price U;
Obtaining a value obtained by combining the purchased gas price Pe and a cost C required when the gas turbine generator generates electricity as an energy value Ee (= C + Pe) of the gas turbine generator;
The electric power supply and demand control method for a distributed power supply system according to claim 8 , wherein: The calculation of the second energy value converted into the commercial power source and the heat supply facility is as follows:
A step of obtaining a commercial power price Pu (= Pout * Up) using a power unit price Up of a commercial power source that varies depending on a time zone with respect to a power amount Pout that can be output from the facility;
Obtaining a purchased gas heat quantity Hb (= eb * Ha) using the efficiency eb of the heat supply equipment from the assigned quantity Ha for the thermal load;
Obtaining a purchase gas volume Vb (= Hb / Hbm) from the purchase gas calorie Hb and the calorie Hbm per 1 rice;
Obtaining a purchase gas price Pb (= Vb * U) from the purchase gas volume Vb and purchase gas unit price U;
A step of obtaining an energy value Eb (= Pu + Pb) by adding the power price Pu of the commercial power supply and the purchase gas price Pb;
10. The electric power supply and demand control method for a distributed power supply system according to claim 8 or 9 , characterized by comprising: Calculation of the heat load when the electric heat supply equipment has a heat storage tank,
From the current heat load amount H (t), the current heat storage amount S (t), the current time t, and the elapsed time t≡, the converted heat load amount C (t) is obtained by the following equation:

11. The electric power supply and demand control method for a distributed power system according to claim 7, further comprising a step of setting the converted heat load amount C (t) as the heat load amount. When the startup cost of the electric heat supply equipment is high, the calculation of the cost is
From the start-up cost I, the expected operating time T (t), the thermal load H (t ′) after the elapsed time t ′, the rated heat output W, the current time t, and the elapsed time t≡ The starting cost B (t) converted by

12. The electric power supply and demand control method for a distributed power system according to any one of claims 7 to 11, further comprising a step of including the start-up cost B (t) in the cost.

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