JPH07112333B2 - Power system monitoring / control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a system including a plurality of computers for monitoring and controlling an electric power system, and in particular, equipment information of the electric power system to be monitored and controlled. The present invention relates to a power system monitoring / control system that enables easy maintenance.

(Prior Art) Generally, in a power system, facilities such as a power plant, a substation, and a power transmission line are physically laid out in a mesh pattern. These power system facilities are categorized by voltage class, with high-voltage main transmission lines and main substations, large-scale power plants being provided by higher power stations, and low-voltage transmission lines and low-voltage substations, small substations. A large-scale power plant is managed and operated by a hierarchical organization, such as a lower-level power supply station, a distribution line at the end, and a distribution substation at a lower-level control station, which respectively share monitoring and control. Is normal.

Such a power system management and operation organization is usually a power station /
It is called a control station. Then, in order to efficiently and surely operate the power system equipment under management at this power supply station / control station, it is becoming common for a control computer to be installed in each of these computers. Is the control range (usually referred to as the command range), and information indicating the status of power stations, substations (usually referred to as the electric power station), and transmission lines around it is input via various status information input devices. ing.

Further, in these computers, in addition to the electric power station equipment of the command range of the control station and the electric power system equipment of the transmission line, the information of the electric power station of the surrounding area and the electric power system equipment of the transmission line is also stored.

By the way, since the power system is configured like a mesh,
In order to reliably manage and operate a certain range, it is necessary to know the surroundings of the command range or the upper and lower electric stations and the state of the transmission line.

Therefore, it is necessary for the above-mentioned computer of each power feeding station / control station to monitor and control the electric stations and transmission lines around the outside of its own command range in a mutually overlapping manner. It stores information and status information.

On the other hand, when a facility such as an electric station or a transmission line is changed or expanded in a power system that has a plurality of computers that monitor and control the facilities of the power system that overlap each other in this way,
It becomes necessary to change the stored facility information of the same contents for each of a plurality of computers whose monitoring or control target is the electric station or transmission line.

(Problems to be solved by the invention) However, it is not possible to separately change the information stored in the computers at a plurality of locations as described above by changing the equipment of the power system at one location. Not only is this a waste of time and effort, but it also increases the risk of making mistakes in the change.In addition, the start date and time of use of this power system equipment after the change work and the date and time when the computer starts its monitoring and control It is difficult to secure sex.

The present invention has been made in consideration of the circumstances as described above, and its object is to monitor and control a plurality of electric stations and transmission lines by a plurality of computers. When facilities are changed or added, power system monitoring that can easily and simultaneously change the power system facility information stored in all necessary computers among multiple computers To provide a control system.

[Structure of the Invention] (Means and Actions for Solving Problems) In the present invention for achieving the above-mentioned object, each of the power systems within its own management range stored in the power system facility information file in the storage device. Coordinates a plurality of computer systems that monitor and control the power system based on the state information of the power system input by the state information input device using equipment information so that information transmission devices can mutually exchange information. In the power system monitoring and control system, the only computer that is the parent computer among the multiple computers is equipped with the facility information input device that inputs the facility information of the power system, and the parent computer has a facility change in the power system. In this case, the changed facility information input from the facility information input device is stored in its own power system facility information file, and other than the parent computer related to this changed facility information. Check whether or not there is a computer, and if there is a computer related to this changed equipment information, use it as a child computer and store the changed equipment information for the power system equipment information file of this child computer via the information transmission device. When the equipment change work is completed and the equipment is ready for use, it receives the start date of the equipment change input instructed from the equipment information input device, stores the use start instruction in its own storage device, and stores the information. It is characterized in that it has a function of storing it in a storage device of a slave computer via a transmission device, and a plurality of computers can start monitoring and control at substantially the same time.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

First, FIG. 1 is a block diagram showing a configuration example of a power system monitoring / control system when the present invention is applied to three power feed stations / control stations. In FIG. 1, reference numeral 1 is a first computer for monitoring and controlling a power system within a certain command range. In the present embodiment, facility information is input when the computer 1 is changed in power system facilities or the like. The parent computer. Reference numerals 2 and 3 are second and third computers, respectively, which monitor and control the power system in the command range overlapping with the first computer 1, respectively. In the present embodiment, these computer 2,
3 is a slave computer that receives the changed facility information via the first computer 1 when the power system facility or the like is changed.

On the other hand, in each of the above-mentioned first to third computers 1 to 3,
1, 21, 31 are computer main bodies, and 12, 22, 32 are storage devices. 13,
Reference numerals 23 and 33 are state information input devices, and the states of the power system equipment in the monitoring control range are 13a, 13b, ... 13n, 23a, 23b ,.
It is input as the status information of 33a, 33b, ... 33n. Further, 14a, 14b, 24, 34 are information transmission devices, and 14a and 24
, And 14b and 34 are connected to each other, and the first computer as a parent computer and the second and third computers as child computers
Information is exchanged between two and three. Further, 15 is an equipment information input device for inputting equipment information of the electric power system, and is composed of, for example, a card reading device or the like. Furthermore, reference numeral 16 denotes a printer for leaving a history of the change when the facility information of the power system is changed. Reference numerals 17, 27, and 37 are power system facility information files in the storage devices 12, 22, 32 that store facility information of power systems in their own command ranges, respectively.

Next, FIG. 2 shows in detail the contents of the power system facility information file. In FIG. 2, the power system equipment information file A is classified into, for example, an electric station equipment file B and a transmission line equipment file C. The electric station equipment file B is arranged in the order of electric station numbers with respect to the electric stations that compose the power system in the monitoring control range. The contents of each electric station are classified according to the equipment that constitutes the electric station, for example, bus data, transformer data, phase adjusting equipment data, and so on. Also, for example, the transformer data is No
1) Transformer data, No. 2 transformer data, etc., along with data such as equipment specifications, ratings, and names for each equipment, whether the transformer equipment of that number is installed or not installed. That is, a flag indicating whether it is a monitoring / control target or a non-target is given.

Similarly, the transmission line equipment file C also has a hierarchical structure and is installed / not installed as equipment, that is, an installed / uninstalled flag is given for each unit of monitoring / control target or not. I will leave it.

Furthermore, for each electric power station and each transmission line, a related system flag indicating what kind of related system monitors and controls those power system facilities shall be given. By the way, it has become possible to find computers that require facility information regarding power transmission lines.

Next, the operation of the system thus configured will be described. In FIG. 1, each of the computers 1, 2, and 3 uses the power system equipment information files 17, 27, and 37 in the storage devices 12, 22, and 32 for the monitoring control range of its own, and the status information input device. 13,23,
Monitoring and control are performed based on the power system status information input via 33.

From such a state, description will be made assuming that, for example, a No. 4 transformer is now added to the No. 2 electric station. In this case, first, before starting the operation of the equipment, the equipment information about the No2 substation No4 transformer is input from the equipment information input device 15 of the first computer 1 that is the parent computer. Then, the computer main body 11 stores the input equipment information in a predetermined area of the power system equipment information file 17 of its own storage device 12 and checks the related system flag of the No. 2 electric station.
As a result, if the second computer 2, which is a child computer, is registered as being related, the above-mentioned input equipment information is passed through the information transmission device 14a of the first computer 1 and the information transmission device 24 of the second computer 2. Then, it is transmitted to the second computer 2. As a result, the second computer 2 confirms that it is a related system and then stores the equipment information of the NO.4 transformer of the above-mentioned NO.2 electric station in the electric power system equipment information file 27 in the storage device 22. Store in a predetermined area. Further, the first computer 1 further checks the related system flag, and if there is a registered related computer, transmits the equipment information of the NO.4 transformer of this NO.2 electric power station. At this point, both the parent computer 1 and the child computer 2 store the equipment related to the input equipment information as unequipped. Therefore, even if the status information input devices 13 and 23 are different from the input status information, no contradiction occurs in the system.

Next, when the change work of the equipment is completed and it can be used as a power system, the changed information, that is, the No. 2 electric station N from the equipment information input device 1 of the parent computer 1
o4 Enter the start date and time of use of the transformer equipment. Then, the parent computer 1 stores this use start date and time in its own storage device 12, and at the same time, stores the use start date and time of the equipment, that is, No2 electric station and No4 transformer equipment, to the related computer (here, computer 2). To transmit. Then, the child computer 2 stores the use start date and time in the storage device 22. As a result, each of the computers 1 and 2 has its own storage device 1 at the predetermined start date and time.
A mounting flag is set in the power system equipment files 17 and 27 in 2 and 22, and monitoring and control are started all at once assuming that the equipment is mounted.

As described above, in the power system monitoring / control system of this configuration, when the monitoring / control of a specific power system facility is performed by a plurality of computers, by inputting the changed facility information from only one parent computer 1, It becomes possible to change the equipment information of all the related computers 1, 2, and 3 at substantially the same time, and to start and stop the monitoring and control of those equipment. Further, since the facility information is input only from the single parent computer 1, it is possible to prevent an inconsistent state among the computers 1, 2 and 3. Furthermore, after changing the equipment, the only instruction from the parent computer 1 is to start using the equipment,
Since 2, 3 can simultaneously incorporate the equipment into the monitoring and control target, the start date and time of use after the equipment change and the computer 1,
It is possible to easily obtain the simultaneity with the monitoring and control start date and time by a few items.

Although the above embodiment has been described as the system of the parent computer 1 and the child computers 2 and 3, it is obvious that the number of computers may be two or four or more.

Further, in FIG. 1, state information input devices 13, 23, 33 for inputting state information of the power system to be monitored / controlled and information transmission devices 14a, 14b, 24, 34 for facility data transmission are respectively shown. Although described as separate devices, these can be realized by the same hardware depending on the information transmission device, and a dedicated information transmission device for transmitting the changed facility information is not required.

[Effects of the Invention] As described above, according to the present invention, in a system in which a plurality of electric stations and transmission lines are monitored and controlled by a plurality of computers, change, extension, etc. to electric power system equipment such as electric stations and transmission lines. In case of the above, a highly reliable power system monitoring that can easily and simultaneously change the memory information of the power system equipment in all necessary computers in a plurality of computers at the same time.
A control system can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a configuration example of a power system facility information file for carrying out the present invention. 1,2,3 …… Calculator, 11,21,31 …… Calculator main unit, 12,22,32
...... Memory device, 13,23,33 …… State information input device, 14a, 14
b, 24,34 …… information transmission device, 15 …… equipment information input device, 1
6 …… Printer, 17,27,37 …… Power system equipment information file.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Moriyoshi Nagahama 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Co., Inc. (72) Masahiko Yoda 1 Toshiba Town, Fuchu, Tokyo Toshiba Corporation Fuchu Factory (72) Inventor Mamoru 52-1 Omika-cho, Hitachi City, Ibaraki Hitachi Ltd. Omika Factory, Ltd. (72) Inventor Toshihiko Tsuji 1-1-1 Wadazaki-cho, Hyogo-ku, Kobe-shi, Hyogo No. 2 Mitsubishi Electric Co., Ltd. (56) References JP-A-60-174028 (JP, A) JP-A-58-154340 (JP, A) JP-A-57-116542 (JP, A)

Claims (1)

[Claims] 1. Based on the status information of the power system input by the status information input device, using the equipment information of the power system in its own management range stored in the power system equipment information file in the storage device, respectively. In addition, a plurality of computer systems that monitor and control the power system are linked so that information can be exchanged by an information transmission device.
In the control system, the only computer serving as a parent computer among the plurality of computers is provided with a facility information input device for inputting facility information of the power system, and the parent computer has a facility change in the power system. In this case, while storing the changed equipment information input from the equipment information input device in its own power system equipment information file,
Check whether or not there is a computer other than the parent computer related to this changed equipment information, and if there is a computer related to this changed equipment information, use it as a child computer, and in the power system equipment information file of this child computer On the other hand, when the changed equipment information is stored via the information transmission device, and the equipment change work is completed and becomes usable,
It receives the use start date and time of the equipment change input from the equipment information input device, stores the use start instruction in its own storage device, and stores it in the storage device of the slave computer via the information transmission device. An electric power system monitoring / control system having a function of storing the electric power system so that the plurality of computers start monitoring / control at substantially the same time.