JP3772782B2 - Demand control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a demand control apparatus capable of demand control by an arbitrary synchronization method.
[0002]
[Prior art]
The power demand is constantly monitored, and the maximum demand power for each demand time period (hereinafter simply referred to as “time period”) is continuously predicted. If there is a possibility that the maximum demand power will exceed the contract power or the management target power, it is set in advance. 2. Description of the Related Art Demand control apparatuses that perform demand control that automatically controls target equipment such as an air conditioner according to a control method to suppress the maximum power demand to contract power or management target power are in widespread use. In order to perform demand control, it is necessary to synchronize the time limit of the demand control device with the time limit of the electric power company. As one of the synchronization methods, for example, the operator confirms the demand time period set in the power meter of the electric power company, and sets the start and end of the time period in the demand control device. There is an arbitrary synchronization method that synchronizes time.
[0003]
[Problems to be solved by the invention]
When the time is synchronized by the arbitrary synchronization method, the synchronization timing may be shifted due to an input error of an operator. In this case, the maximum demand power will be predicted in a time period different from that of the power company, and appropriate demand control will not be performed. As a result, the maximum demand power will exceed the contract power or the management target power, thereby reducing the basic electricity charge. It may become impossible to achieve the purpose of demand control. However, there is no means for confirming this synchronization timing shift.
[0004]
An object of the present invention is to provide a demand control device capable of detecting and avoiding an input error at the start of a demand time period.
[0005]
[Means for Solving the Problems]
In order to solve the above problem, a demand control apparatus according to claim 1 includes an input unit and an output unit.
[0006]
Here, the input means accepts an input for starting a demand time period used for demand control by an arbitrary synchronization method. Arbitrary synchronization method refers to setting the demand control device so that the demand time limit of the demand control device is synchronized with the power company's demand time limit, for example, confirming the demand time limit set by the operator on the power meter of the power company Then, the start and end of the demand time period are set in the demand control device. The end of the demand time period and the start of the next demand time period may be simultaneous. Output means, when the demand time entered begins or ends, transmits the information to the outside. The information is, for example, a signal for blinking an LED or a signal for sounding a buzzer. Since the information indicating the start or end of the demand time is transmitted to the outside, the start or end of the input demand can be confirmed by such visual or sound from the outside, the discovery of a mistake in the input of the start demand time period It is possible to avoid.
[0007]
A demand control device according to a second aspect is the demand control device according to the first aspect, wherein the output means outputs information to an LED, a buzzer, a computer, or a mobile communication terminal.
[0008]
The start or end of the demand time period input from the LED, buzzer, computer or mobile communication terminal can be confirmed.
[0009]
A demand control apparatus according to a third aspect includes an input unit and an output unit. The input means accepts an input for starting a demand time period used for demand control by an arbitrary synchronization method. The output means outputs information indicating the start or end of the input demand time period. Further, the output means transmits the information to a communication device located away from the output means. In such a remote communication device, such as a management terminal or management center via a network, or a mobile communication terminal, the start or end of the input demand can be confirmed from the outside visually or by voice, It is possible to detect and avoid an input error at the start of the demand time period.
[0010]
A demand control apparatus according to a fourth aspect is the demand control apparatus according to the third aspect, wherein the communication device is an LED, a buzzer, a computer, or a mobile communication terminal. The start or end of the demand time period input from the LED, buzzer, computer or mobile communication terminal can be confirmed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0012]
FIG. 1 is a functional configuration diagram of a demand control system using a demand control apparatus according to the present invention. This system includes a power meter 1, a pulse converter 2, a demand control device 3, an LED 4, an air conditioning outdoor unit 5, an air conditioning indoor unit 6, a management terminal 7, and a center 8. The wattmeter 1 is provided on a power line that supplies power to the air conditioner outdoor unit 5, the air conditioner indoor unit 6, and the like. The wattmeter 1 is provided with a sensor (not shown) for detecting the amount of power. The signal output from this detection sensor is output to the pulse converter 2, converted into KWH / pulse by the pulse converter 2, and output to the demand control device 3. The demand control device 3 calculates the predicted demand power amount that is reached at the end of the time period while monitoring the current power consumption amount within the time period from the pulse signal received from the pulse converter 2. When it is predicted that the predicted demand power amount exceeds the target power (contract power) at the end of the time limit, the air conditioner outdoor unit 5 and the air conditioner outdoor unit 5 connected to the demand control device 3 by a two-core cable, etc. The control signal is transmitted to each of the air conditioning indoor units 6 connected by the above, and the compressor motor of the air conditioning outdoor unit 5 is forcibly stopped, or the set temperature of the air conditioning indoor unit 6 is increased by a predetermined value. On the other hand, the demand control device 3 receives information (hereinafter referred to as state information) indicating the states of the air conditioning outdoor unit 5 and the air conditioning indoor unit 6 from the air conditioning outdoor unit 5. Then, part or all of the status information is transmitted to the management terminal 7 via the first network 9 such as a LAN, and is transmitted to the center 8 via the second network 10 such as a public telephone line. The management terminal 7 receives the state information and performs various analyzes, for example, the continuous operation time calculation of the air conditioner outdoor unit 5. The center 1 includes a large computer server, analyzes the state information transmitted from the demand control device 3, and performs failure prediction of various services, for example, the air conditioner outdoor unit 5.
[0013]
The demand control device 3 includes a signal output unit 31 and an input unit 32. The input unit 32 receives an input for starting a demand time period used for demand control by an arbitrary synchronization method. The signal output unit 31 is connected to the LED 4 and transmits a signal for the LED 4 to start light emission when the demand time period starts or ends. The LED 4 emits light when receiving a signal. Instead of the LED 4, a lamp, a CRT, a liquid crystal display, or other devices that can visually recognize the start or end of the demand time period may be provided. Since a signal is output from the signal output unit 31 to the LED 4 at the start or end of the demand time period, the start or end of the demand can be confirmed by the light emission of the LED 4, and it is possible to find and avoid an input error at the start of the demand time period It is.
[0014]
<Other embodiments>
(A) Instead of the LED 4 of the first embodiment, a device that emits sound, such as a buzzer, is used, and the signal output unit 31 transmits a signal for sounding the buzzer to the buzzer at the start or end of the demand time period. Also good. Even in this way, the start or end of the demand can be confirmed by voice, and it is possible to find and avoid a mistake in inputting the start of the demand time period.
[0015]
(B) The signal output unit 31 transmits a signal to the management terminal 7 or the center 8 or a mobile communication terminal (not shown) at the start or end of the demand period, and the management terminal 7 or the center 8 When such a signal is received, the fact may be displayed on a display or the mobile communication terminal may vibrate. Even in this case, the start or end of the demand time period can be confirmed at the management terminal 7 or the center 8, and an input error at the start of the demand time period can be found and avoided.
[0016]
【The invention's effect】
In the invention according to claim 1, visual start or end from outside of the input demand, since it confirmed by voice, finding mistakes input of the start demand time period, it is possible to avoid.
[0017]
In the invention which concerns on Claim 2, the start or completion | finish of the demand time limit input with LED, a buzzer, a computer, or a mobile communication terminal can be confirmed.
[0018]
In the invention according to claim 3, since the start or end of the input demand can be confirmed from the outside by visual observation, voice, or the like in a communication device at a remote location, a mistake in inputting the start of the demand time period is detected and avoided. It is possible.
[0019]
In the invention which concerns on Claim 4, the start or completion | finish of the demand time period input with LED, a buzzer, a computer, or a mobile communication terminal can be confirmed.
[Brief description of the drawings]
FIG. 1 is a functional configuration diagram of a demand control system using a demand control apparatus of the present invention.
[Explanation of symbols]
3: Demand control device 31: Signal output unit 32: Input unit

Claims (4)

An input means (32) for receiving an input of start of a demand time period used for demand control by an arbitrary synchronization method;
When the inputted demand time begins or ends, and the output means (31) for transmitting the information to the outside,
A demand control device (3).   The demand control device (3) according to claim 1, wherein the output means (31) outputs the information to an LED, a buzzer, a computer or a mobile communication terminal. An input means (32) for receiving an input of start of a demand time period used for demand control by an arbitrary synchronization method;
Output means (31) for outputting information indicating the start or end of the input demand time period;
A demand control device (3) comprising:
The output means (31) transmits the information to a communication device (7, 8) located away from the output means.
Demand control device (3) . The demand control device (3) according to claim 3, wherein the communication device (7, 8) is an LED, a buzzer, a computer or a mobile communication terminal .

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