JP2003032888A - Monitor for power receiving and transforming facility, method of monitoring power receiving and transforming facility, power receiving and transforming facility monitoring program, and computer-readable recording medium having recorded the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the quantity of power used in a power receiving and transforming facility from getting over a specified value. SOLUTION: This system is equipped with a load data base which stores priority separately for each of plural pieces of load that the power receiving facility supplies power, a reception means (S02) which receives the quantity of used power per unit time in the power receiving and transforming facility, a computation means (S04) which computes the temporal change of the power used in the past based on the received quantity of used power, a estimation means (S05) which estimates the power to be used in future based on the temporal change of a computed amount of used power and the present quantity of used power, a selection means which selects the load the lowest in priority from among the plural pieces of load in case that the estimated power is over the specified value (YES in S06), and a break signal output means (S07) which outputs a signal for breaking the power to be supplied to the selected load.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power receiving and transforming equipment monitoring device, a power receiving and transforming equipment monitoring method, a power receiving and transforming equipment monitoring program, and a computer-readable recording medium storing the power receiving and transforming equipment monitoring program, and more particularly, to the power receiving and transforming equipment. The present invention relates to a power receiving and transforming equipment monitoring device capable of monitoring power consumed by a power receiving and transforming equipment, a power receiving and transforming equipment monitoring method, a power receiving and transforming equipment monitoring program, and a computer-readable recording medium recording the power receiving and transforming equipment monitoring program.

[0002]

2. Description of the Related Art Conventionally, factories, buildings and the like have been equipped with power receiving and transforming facilities in order to receive power transmitted from a power company. In addition, between the electric power company and those who use the factory or building, the maximum value of the electric power that the user can use is determined and used so that the electric power company can stably supply the electric power. The person has agreed to use the power within the specified contracted power. This allows
The electric power company can stably supply electric power to the user.

[0003]

However, the amount of electric power used varies depending on the operating condition of the load to which the electric power is supplied. For example, when the outside temperature is high, the operating rate of an air conditioner installed in a factory or a building increases, so that the amount of power used increases. Further, when the operating rate of the load such as such an air conditioner is small, the amount of electric power used becomes small. As described above, the power consumed by the user depends on the operating rate of the operating load.

Therefore, the user had to monitor the load operating rate while monitoring the load so that the power supplied from the power receiving and transforming facility to the load did not exceed the contracted power.

The present invention has been made to solve the above-mentioned problems, and one of the objects of the present invention is to prevent the power consumption of the power receiving and transforming equipment from exceeding a predetermined value. A substation equipment monitoring device and a substation equipment monitoring method.

Another object of the present invention is to provide a power receiving and transforming facility monitoring program and a power receiving and transforming facility monitoring program capable of preventing a power consumption of the power receiving and transforming facility from exceeding a predetermined value by causing a computer to execute the program. An object of the present invention is to provide a computer-readable recording medium in which the data is recorded.

[0007]

According to one aspect of the present invention to achieve the above object, a power receiving and transforming facility monitoring device stores a priority for each of a plurality of loads to which the power receiving and transforming facility supplies power. Storage means, a receiving means for receiving the amount of electric power used per unit time in the power receiving and transforming facility, and a calculating means for calculating a temporal change in the electric power used in the past based on the received amount of electric power used. , A predicting means for predicting power to be used in the future based on the calculated temporal change in the power used in the past and the current amount of power used, and storing when the predicted power exceeds a predetermined value. A selection unit that selects a load with a low priority from the plurality of selected loads, and a cutoff signal output unit that outputs a signal for cutting off the power supplied to the selected load.

According to the present invention, the power to be used in the future is predicted on the basis of the temporal change in the power used in the past and the current power used, and when the predicted power exceeds a predetermined value, A signal for cutting off the power supplied to the load having a low priority is output. Therefore, it is possible to provide a power receiving and transforming facility monitoring device capable of preventing the amount of power used by the power receiving and transforming facility from exceeding a predetermined value.

Preferably, the output means further includes means for outputting a warning signal. According to the present invention, since the warning signal is output, it is possible to notify the administrator of the power receiving and transforming facility that the power supplied to the selected load will be cut off.

[0010] Preferably, the apparatus further comprises supply signal output means for outputting a signal for supplying power to the interrupted load when the predicted power falls below a predetermined value and then falls below the predetermined value.

According to the present invention, when the predicted power falls below the predetermined value and then drops, the signal for supplying the power to the interrupted load is output. Therefore, the power used by the power receiving and transforming facility does not exceed a predetermined value, and the power can be supplied to the load once the power supply is interrupted.

According to another aspect of the present invention, a power receiving and transforming facility monitoring method includes a step of receiving a power usage amount per unit time in a power receiving and transforming facility that supplies power to a plurality of loads, and the received usage. Based on the amount of electric power, the step of calculating the temporal change of the electric power used in the past, and the electric power used in the future based on the calculated temporal change of the electric power used in the past and the present amount of electric power used. Predicting
If the predicted future power usage exceeds a specified value,
The method includes a step of selecting a load having a low priority from a plurality of loads, and a step of outputting a signal for cutting off power supplied to the selected load.

According to the present invention, it is possible to provide a power receiving and transforming equipment monitoring method capable of preventing the power consumption of the power receiving and transforming equipment from exceeding a predetermined value.

According to still another aspect of the present invention, the power receiving and transforming facility monitoring program receives a power usage amount per unit in the power receiving and transforming facility which supplies power to a plurality of loads, and the received usage. Based on the amount of electric power, the step of calculating the temporal change of the electric power used in the past, and the electric power used in the future based on the calculated temporal change of the electric power used in the past and the present amount of electric power used. And a step of selecting a load with a low priority from a plurality of loads when the predicted future power usage exceeds a predetermined value, and shutting off the power supplied to the selected load. Causing the computer to perform the steps of outputting a signal for

According to the present invention, the power receiving and transforming equipment monitoring program and the power receiving and transforming equipment monitoring program capable of preventing the power consumption of the power receiving and transforming equipment from exceeding a predetermined value by causing the computer to execute are recorded. The computer-readable recording medium can be provided.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding members, and the duplicated description will not be repeated.

FIG. 1 is a diagram showing an outline of a power receiving and transforming facility monitoring system according to one of the embodiments of the present invention. The power receiving and transforming equipment monitoring system consists of equipment installed on the premises of electric power companies, leasing companies and customers. Electricity companies generate electricity and supply it to factories and buildings used by customers. The customer receives the power supply from the power company at the power receiving and transforming equipment 200 to the factory or building used by the customer.
Uses electricity. The leasing company receives the substation equipment 2
Lease 00.

A contract regarding the amount of electricity used, a charge, etc. has been concluded between the consumer and the electric power company. Also,
A leasing contract is concluded between the consumer and the leasing company in order to install the power receiving and transforming equipment 200.

A server 210, a printer 212, and a terminal 211 are installed in the electric power company. Server 21
0, the printer 212, and the terminal 211 are connected by a local area network or the like. The server 210 is connected to the external network 300.

The leasing company has a substation monitoring device 10
0, a terminal 108, and a printer 109 are installed. The power receiving and transforming facility monitoring device 100, the terminal 108, and the printer 109 are connected by a local area network. Further, the power receiving and transforming facility monitoring device 100 is connected to an external network 300.

The power receiving and transforming equipment monitoring device 100 executes a power receiving and transforming equipment monitoring process described later. A power receiving and transforming facility 200, a personal computer 201 capable of communicating with the power receiving and transforming facility 200, a printer 203, and a terminal 202 are installed in a customer's factory or building. The power receiving and transforming equipment 200, the personal computer 201, the printer 203, and the terminal 202 are each connected to a local area network and can communicate with each other. In addition, the personal computer 201
Are connected to an external network 300.

The meter-reading device 204 normally measures meter-reading data indicating the amount of electric power used at predetermined intervals. The measured meter reading data is transmitted to the personal computer 201.
Further, the meter reading device 204 is the personal computer 20.
In response to the inquiry from 1, the measured power consumption may be transmitted to the personal computer 201.

The power receiving and transforming equipment 200 installed in a customer's factory or building receives power from the power company and supplies power to the load A, the load B, the load C and the load D. Further, the power receiving and transforming facility corresponds to each of the load A, the load B, the load C, and the load D, and circuit breakers 205A, 205B, 205C, 205 for cutting off the power supply to each load.
With D. Circuit breakers 205A, 205B, 205C, 2
When 05D is in the cutoff state, the circuit breakers 205A, 205
The power supply to the loads connected to B, 205C and 205D is cut off, and conversely circuit breakers 205A, 205B and 205
Circuit breaker 205 when C and 205D are not in the cutoff state
Electric power is supplied to the loads connected to A, 205B, 205C, and 205D. Circuit breakers 205A, 205B, 205
The states of C and 205D are the personal computer 201.
It is switched according to the instruction from.

In the power receiving and transforming facility monitoring system configured as described above, the server 210 installed in the power company is installed.
And a power receiving and transforming facility monitoring device 100 installed in a leasing company
And a personal computer 201 installed in a factory or building of a consumer can communicate with each other via the network 300.

FIG. 2 is a block diagram showing the configuration of the power receiving and transforming facility monitoring apparatus 100 according to this embodiment. With reference to FIG. 2, the power receiving and transforming facility monitoring apparatus 100 can be configured by a personal computer or the like. The power receiving and transforming facility monitoring device 100 outputs a predetermined information, a control unit 101 for controlling the entire power receiving and transforming facility monitoring device 100, an input unit 103 for inputting predetermined information to the power receiving and transforming facility monitoring device. An output unit 104 for storing information, a storage unit 102 for storing predetermined information, a communication unit 105 that is an interface for connecting the power receiving and transforming facility monitoring apparatus 100 to the network 300, and a recording medium 107. An external storage device 106 for inputting information and recording necessary information in the recording medium 107 is included.

The control unit 101 is a central processing unit, and a random access used as a work area necessary for executing a program and a read only memory (ROM) for storing a program to be executed by the control unit 101. And a memory (RAM).

The input unit 103 is a keyboard, a mouse or the like, and can input necessary information to the power receiving and transforming equipment monitoring device 100.

The output unit 104 is a display such as a liquid crystal display device or a cathode ray tube (CRT). A printer can be used as the output unit 104.

The storage unit 102 is a magnetic disk storage device such as a hard disk drive. Instead of the magnetic disk storage device, a magneto-optical disk storage device, an optical disk storage device, or the like can be used.

The communication unit 105 is used for the power receiving and transforming facility monitoring device 10.
0 is a communication interface for connecting 0 to the external network 300. Via the communication unit 105, the power receiving and transforming equipment monitoring device is a server 210 installed in an electric power company,
Alternatively, necessary information is transmitted / received to / from the personal computer 201 installed in the factory or building of the customer.

The network 300 is constructed by a dedicated line such as an optical fiber network. Alternatively, a general public line may be used. In addition, local area networks,
A wide area network or the like may be used.

The external storage device 106 reads the program and data recorded in the recording medium 107, and controls the control unit 101.
Send to. Further, according to an instruction from the control unit 101, necessary information is written on the recording medium 107.

As the computer-readable recording medium 107, a magnetic tape, a cassette tape, a magnetic disk,
It is a recording medium such as a magneto-optical disk, an optical disk, an IC card, or a semiconductor memory that carries a program in a fixed manner. The recording medium 107 can also be a medium that fluidly carries the program so that the program can be downloaded from a network.

FIG. 3 is a diagram showing an example of a database stored in the storage unit 102 of the power receiving and transforming facility monitoring apparatus 100 according to the present embodiment. With reference to FIG. 3, the storage unit 10
2 is a power contract database (hereinafter "power contract D / B")
110), a lease contract database (hereinafter referred to as “lease contract D / B”) 120, a customer database (hereinafter referred to as “customer D / B”) 130, and the power receiving and transforming facility 2
00 is a load database (hereinafter referred to as “load D / B”) for storing data related to a load for supplying power 1
And 40.

The electric power contract D / B 110 stores information necessary for calculating a usage charge according to the amount of electric power used, among electric power contracts concluded with electric power companies for each consumer. . The lease contract D / B 120 stores data used for calculation of a lease fee, among the lease contracts that the consumer has signed with the leasing company.

The customer D / B 130 stores information about consumers such as demand name, address, telephone number and network address.

The load D / B 140 stores data for each load to which the power receiving and transforming equipment 200 supplies power.

FIG. 4 is a diagram showing an example of a power contract database stored in the storage unit. With reference to FIG. 4, the power contract D / B 110 includes a customer ID item 111, a contract type item 112, a contract power item 113, a power unit price item 114, and a settlement date item 115. Store data. For example, the item of the customer ID 111 is “12
For the customer (consumer) of "3456", the contract type item 112 is "22kV power receiving and transforming equipment", the contract electric power item 113 is "2000kWh", and the electric power unit price item 114 is "XXX yen". / KWh ”, and the item 115 of the settlement date is“ every month end ”.

In the power contract database 110,
If the customer ID item 111 is determined, one power contract data is determined. Moreover, one power contract data is specified by determining the customer ID, and by reading the data of the item 114 of the power unit price, the power unit price and the power usage amount are used, and the power corresponding to the power usage amount is used. The usage fee can be calculated. In addition, item 115 of settlement date
Is read, the time when the bill is issued is specified.

FIG. 5 is a diagram showing an example of a lease contract database stored in the storage unit 102. With reference to FIG. 5, a plurality of lease contract data are stored in the lease contract database, and each lease contract data is stored in the customer I.
Item 121 of D and equipment No. Data 122, a lease period item 123, and a lease fee item 124.

For example, for a customer whose customer ID is "123456", two equipment numbers "F001" and "F002" are assigned. The lease contract data of is stored. Therefore, it is indicated that the customer with the customer ID “123456” has a lease contract for two facilities. The two equipments are equipment numbers. Item 12
The second data is the data of “F001” and “F002”. Then, the equipment No. Item 122 is “F001”
In the data of No. 123, the lease period item 123 is “1995.
1.1 to 2004.12.31 ”, and the lease fee item 124 is“ 15,000 ”. On the other hand, the equipment No. The lease contract data in which the data of the item 122 of the item is “F002” is the item 123 of the lease period is “1997.
1.1 to 2006.12.31 ”, and the lease fee item 124 is“ 15,000 ”.

As described above, the lease contract database 12
For 0, lease contract data is created and stored for each facility for which a lease contract is made.

FIG. 6 is a diagram showing an example of the customer database 130 stored in the storage unit 102. Referring to FIG. 6, customer database 130 includes a plurality of customer data. Each customer data has a customer ID item 131.
An address item 132, a name item 133, a telephone number item 134, and a network address item 135.
Including and The customer ID item 131 uses the same data as the data used for the customer ID item 111 of the power contract database 110 and the customer ID item 121 of the lease contract database 120.

The customer database 130 stores the customer's address, name, telephone number, and network address in association with each customer ID assigned to each customer. Therefore, by specifying the customer ID, the address, name, telephone number and network address of the customer to whom the customer ID is attached can be immediately obtained.

FIG. 7 is a diagram showing an example of the load database 140 stored in the storage unit 102. With reference to FIG. 7, the load database 140 stores data for each load to which the power receiving and transforming facility 200 supplies power. These data are the load name item 141 and the priority item 14
2, item 143 of maximum power, and item 144 indicating status
Including and The item 141 of the load name is the power receiving and transforming equipment 200.
Is a name for specifying a load that supplies electric power. The priority order 142 is the order assigned to each load, and the highest priority order is represented by a small number.
The item 143 of maximum electric power shows the electric power consumed when each load operates at an operating rate of 100%. The item 144 indicating a state includes “supply” indicating that power is being supplied to the load and “blocking” indicating that power is being cut off to the load.

The load data shown in FIG. 7 is the customer ID.
Is data regarding the power receiving and transforming equipment 200 owned by the customer of “123456”. Therefore, the load data is stored for each customer. In other words, the load database 14
0 stores load data for each substation equipment.

FIG. 8 is a flowchart showing the flow of the power receiving and transforming equipment monitoring process executed by the power receiving and transforming equipment monitoring apparatus 100 in the present embodiment. Referring to FIG. 8, in the power receiving and transforming facility monitoring device 100, the personal computer 20
A request for transmission of the load data used power is issued to 1 (step S01). In the personal computer 201,
The power consumption of the power receiving and transforming equipment 200 is periodically collected from the meter reading device 204 of the power receiving and transforming equipment 200.

When the personal computer 201 receives the power transmission request from the power receiving and transforming equipment monitoring device 100, the power used is periodically collected from the power receiving and transforming equipment 200 and the customer ID given to the power receiving and transforming equipment 200. And are transmitted to the substation equipment monitoring device 100.

The power receiving and transforming equipment monitoring device 100 receives the customer ID and the power consumption from the personal computer 201 (step S02). Step S01 and Step S
The processing with 02 is periodically repeated, and the power receiving and transforming equipment monitoring device 100 can grasp the power used by the power receiving and transforming equipment 200 in almost real time. The electric power used thus collected is stored in the storage unit 102 of the power receiving and transforming facility monitoring device 100. As a result, the data of the power used in the power receiving and transforming facility 200 in the past is stored in the storage unit 102.

In the next step S03, step S02
The power contract database 110 stored in the storage unit 102 is searched based on the customer ID received in. Then, the contract power that matches the customer ID is read.

In the next step S04, the power consumption pattern of the power receiving and transforming equipment 200 is calculated from the past power consumption data of the power receiving and transforming equipment 200 stored in the storage unit 102 (S04). The used power pattern is, for example, the past 1
It is represented by the distribution of power consumption for each time obtained by averaging the power consumption data for each time of week.

Then, in the next step S05, calculation for predicting future power consumption is performed. Hereinafter, the predicted power usage will be referred to as predicted power. The predicted power is calculated from the power usage pattern obtained in step S04 and the current power usage. Here, the predicted power is described as the power that will be used in one hour. For example, the predicted power is obtained by adding the difference between the power corresponding to the current time of the power usage pattern and the power corresponding to the time one hour later to the current power usage.

Then, in the next step S06, the predicted power after 1 hour predicted in step S05 is compared with the contracted power read in step S03. If the predicted power exceeds the contracted power, the process proceeds to step S07, and if not, the process proceeds to step S09.

In step S07, a cutoff command for cutting off the power supply to the load having the lowest priority among the loads stored in the load database 140 of the storage unit 102 is transmitted to the personal computer 201. Here, with reference to FIG. 7, when determining the load for cutting off the power supply, first, the item 144 of the state of the load database 140 is referred to. Among the loads whose status item 144 is “supplied”, the load having the largest value in the priority item 142 is determined. In FIG. 7, all the status items 144 are “supply” for all the load data. Therefore, the item 141 “load D” having the lowest load name is selected, and the instruction to cut off the power supply to the load D is issued by the personal computer 201.
Be sent to.

When the predicted power exceeds the contracted power, and the power is larger than the maximum power of the selected load,
The next lowest priority load is further selected.

When the personal computer 201 receives the cutoff command for cutting off the power supply to the load D, the personal computer 201 controls the power receiving and transforming equipment 200 to cut off the circuit breaker 205D. As a result, the substation equipment 20 for receiving the load D
The power supply from 0 is cut off.

Returning to FIG. 8, in the next step S08,
A warning message indicating that the contract power will be exceeded after one hour, the name of the load that cuts off the power supply, and the current power used are output to the personal computer 201. As a result, on the display of the personal computer 201, a message warning that the power usage exceeds the contract power after one hour, the name of the load for which the power supply is interrupted, and the current power usage of the power receiving and transforming equipment 200 are displayed. Is displayed.

Therefore, the user can know that the contracted power will be exceeded after one hour, and also the load in which the power supply has been cut off and the current power used.

On the other hand, when the predicted power does not exceed the contracted power in step S06, it is determined whether the predicted power has a margin with respect to the contracted power (step S0).
9). Whether or not there is a margin can be determined by, for example, whether or not the difference between the predicted power and the contracted power is larger than the maximum power of the load whose power supply is cut off.

In this case, the load database 140 is searched, and the maximum power item 143 of the load data in which the status item 144 is “shut off” is read. The maximum power read out is compared with the difference between the contract power and the predicted power. If the maximum power is smaller than the difference between the contract power and the predicted power, the process proceeds to step S10, and if not, the process ends.

In step S10, a turn-on command for supplying power again to the load whose power supply has been cut off is transmitted to the personal computer 201. When the personal computer 201 receives the load turn-on command, the personal computer 201 turns on the electric power to the designated load.
0 circuit breakers 205A to 205D are controlled. For example,
When the closing instruction for supplying power to the load D is received with the circuit breaker 205D for the load D being cut off, the personal computer 201 determines that the circuit breaker 2
Release 05D from the blocked state. As a result, electric power is supplied to the load D from the power receiving and transforming equipment 200.

Then, in the next step S11, the personal computer 201 receives a message indicating that power is supplied to the load D, and the power receiving and transforming equipment 200.
And the power used for transmission. As a result, the display of the personal computer 201 displays a message indicating that the load D has been supplied with power, and also displays the power used by the power receiving and transforming facility 200.

FIG. 9 is a first diagram showing the relationship between the used power pattern and the predicted power. In FIG. 9, the customer ID is "1.
23 shows the relationship between the power usage pattern and the predicted power for the customer "23456". Therefore, the contract power is 2
It is 000 kWh. Further, in FIG. 9, the power consumption pattern of the day is represented by the power at each time from 1:00 to 24:00, and the power consumption actually used from 1:00 to 12:00 is shown.

At 12:00, the power expected to be used after 13:00 is predicted. This is obtained by moving the graph of the power usage pattern to the position of the actual power usage at the time of 12:00. Therefore, in the power usage pattern, by adding the power difference between the power usage at 13:00 and the power usage at 12:00 to the power actually used at 12:00, the predicted power that will be used at 13:00 is obtained. It is calculated. The power consumption is predicted in the same manner for the subsequent times.

FIG. 10 is a second diagram showing the relationship between the power used and the predicted power. FIG. 10 shows an example in which the power supply to the load D is cut off at 12:00. From FIG. 9, the power used at 13:00 exceeds the contracted power. In such a case, the power supply to the load D is cut off. Here, the load D is 100
%, And the maximum power of 300 kWh was used. When the electric power supplied to such a load D is cut off, the electric power used by the power receiving and transforming facility 200 becomes 30%.
Decrease by 0 kWh.

Therefore, the predicted power at 12:00 is as shown in FIG. In this way, by cutting off the power supply to the load D, it is possible to prevent the power used by the power receiving and transforming facility 200 from exceeding the contract power of 2000 kWh.

FIG. 11 is a third diagram showing the relationship between the used power pattern and the predicted power. FIG. 11 shows a state in which electric power is applied to the load D, the supply of electric power of which is interrupted at time 18 o'clock. Since the difference between the power actually used at 18:00 and the contract power becomes larger than 300, which is the maximum power of the load D, the power is supplied to the load D.

As a result, the substation equipment 20 at 18:00
The power consumption of 0 has increased by 300 kWh. Actual 18
Since the difference between the power used by the power receiving and transforming equipment 200 and the contracted power at that time is larger than 300 kWh, which is the maximum power of the load D, even if power is supplied to the load D, the power used by the power receiving and transforming equipment 200 is , Contracted power 2000k
Never exceed Wh. Then, the predicted power after 19:00 is predicted as shown in FIG.

Next, the bill issuing process performed by the power receiving and transforming equipment monitoring device 100 will be described. FIG. 12 is a flowchart showing the flow of the bill issuing process performed by the power receiving and transforming facility monitoring apparatus 100 according to the present embodiment.
With reference to FIG. 12, the power receiving and transforming equipment monitoring device 100 determines whether or not a predetermined period has elapsed (step S2).
1). The predetermined period is a period determined by the power contract concluded between each consumer and the power company to calculate the power rate, and is determined by the item 115 of the settlement date of the power contract database 110.

Therefore, it is determined for each customer whether or not the predetermined period has elapsed. The elapse of this predetermined period is determined from the item 115 of the settlement date of the power contract database 110 stored in the storage unit 102. If it is determined that the predetermined period has elapsed, the process proceeds to step S22, and if not, the process waits until the predetermined period elapses. Since each customer has a different settlement date, it is determined for each customer whether or not the predetermined period has elapsed. Therefore, if it is determined that the predetermined period has passed for any of the customers, the process proceeds to step S22, and if not, the standby state is set.

In step S22, the power receiving and transforming equipment monitoring device 100 operates the consumer's personal computer 201.
The communication unit 10 issues an instruction to request the transmission of the power consumption to the communication unit 10.
5 and the network 300. In this case, which customer is to be transmitted with the power usage amount transmission request is determined by reading the customer data from the customer D / B 130 based on the customer ID for which the predetermined period has passed in step S21, and using that customer ID. The address stored in association with each other is read. As a result, the network address of the personal computer 201 is specified.

In the personal computer 201, when the power consumption transmission request is received from the power receiving and transforming equipment monitoring device 100, the power consumption received from the meter reading device 204 and stored in the hard disk or the like is read. Further, in the personal computer 201, a customer ID assigned to the customer is stored in advance in a storage device such as a hard disk, and this customer ID is read from the storage device. The read customer ID and power usage amount are stored in the network 30.
It is transmitted to the substation equipment monitoring device 100 via 0. Note that the customer ID is not stored in the storage device of the personal computer 201, but the customer ID is transmitted from the power receiving and transforming facility monitoring device 100 together with the power usage amount transmission request.
You may make it return D and electric power consumption to the substation equipment monitoring apparatus 100.

Further, the customer's personal computer 201 transmits the customer ID and the power usage amount to the power receiving and transforming equipment monitoring device 100 at a predetermined time interval without requesting the power receiving and transmitting equipment monitoring device 100 to transmit the power usage amount. You may do it. In this case, the substation equipment monitoring device 10
0, personal computer 2 of each consumer
Customer ID, power consumption, and storage unit 102 received from 01
Alternatively, the data may be stored for each customer ID, and the data of the customer ID may be read and the power consumption may be calculated when a predetermined period has elapsed. In this case, step S2
2 and S23 are unnecessary.

When the customer ID and the power consumption amount are received from the personal computer 201 in step S23, the same customer data as the received customer ID is sent to the customer D / B 130.
Is read from (step S24). The read customer data is temporarily stored in the RAM of the control unit 101.

Next, the same power contract data as the received customer ID is read from the power contract D / B 110 (step S25). The read power contract data is stored in the control unit 10
1 is temporarily stored in the RAM.

Next, the power usage charge is calculated using the data of the power unit price item 114 of the read power contract data and the power usage amount received in step S23 (step S26). The calculated power usage charge is temporarily stored in the RAM of the control unit 101.

Further, the power usage charge is transmitted to the server 210 installed in the power company via the communication unit 105 and the network 300 (step S27). Upon receiving the power usage amount transmission request from the power receiving and transforming equipment monitoring device 100, the personal computer 201 installed in the customer receives the customer ID and the power usage amount and receives the power transforming equipment monitoring device 10.
0, and also transmits the customer ID and the power usage amount to the server 210 of the power company via the network 300.

The server 210 of the electric power company identifies the customer based on the received customer ID and reads out the electric power contract data concluded with the customer. Then, based on the read power contract data and power usage amount, the power usage charge of the customer is calculated. Then, the power usage fee received from the power receiving and transforming equipment monitoring device 100 of the leasing company, and the server 21
By comparing with the electricity usage charge calculated by 0,
It is determined whether or not the power usage charge calculated by the power receiving and transforming facility monitoring device 100 is correct. If the two numbers are different, it is assumed that there is an error in the power contract data of the power receiving and transforming facility monitoring device 100. In such a case, the electric power company instructs the leasing company to modify the electric power contract database.

In the next step S28, step S23
The lease contract data having the same customer ID as the customer ID received in step 1 is read from the lease contract D / B 120. The read lease contract data is temporarily stored in the RAM of the control unit 101.

Then, the lease fee is calculated based on the read lease contract data. Here, referring to FIG. 5, not only one power receiving and transforming facility but also a plurality of power receiving and transforming facilities may be leased to a customer. In this case,
A plurality of lease contract data is stored in the lease contract D / B 120 for one customer ID. For data in which the customer ID item 121 is “123456”, equipment N
o. Item 122 is “F001” data and “F00”
There are two with the data of "2". In step S28, in such a case, two lease contract data for the customer ID "123456" are read out, and the lease fee is calculated for each facility (step S29).

Returning to FIG. 12, in step S30, the service charge generated by the monitoring process is read. The service charge is a charge generated by executing the above-described monitoring process in the power receiving and transforming facility monitoring device 100. The fee generated by this monitoring processing service may be, for example, a fixed amount fixed for each customer every month, or may be a fixed amount determined by the time and number of times required for the monitoring processing. Further, the charge may be determined according to the number of times the load cutoff command is transmitted and the load close command is transmitted. The service charge may be stored in the customer database in association with the customer data.

Using the electric power usage charge calculated in step S26, the lease charge calculated in step S29, and the service charge read in step S30, one invoice for one customer ID is provided. It is printed out from the printer 109 (step S31).

FIG. 13 is a diagram showing an example of items described in a bill issued by the power receiving and transforming facility monitoring device according to the present embodiment. Referring to FIG. 13, the items described in the issued invoice include the customer name and customer number (customer I
D), date, contract type, contract power, usage period, instrument number, number of instructions in the current month, number of instructions in the previous month, usage amount, electricity rate, lease fee, service fee. Your customer number is
It is a unique customer ID given to each customer. The year / month portion indicates the period of use of the electric power for which the electric power charge is to be paid. This year and month will differ for each customer depending on the item 115 of the settlement date of the power contract database 110.

The contract type and the contract power are data corresponding to the contract type item 112 and the contract power item 113 of the power contract database 110. The usage period is calculated from the data corresponding to the item 115 of the settlement date of the power contract database 110. Here, the closing date is 17th of every month.

The instrument number means the equipment number of the lease contract D / B 120. This is data corresponding to item 122 of. In this example, the customer ID is "123456",
The customer with the customer ID “123456” is the equipment number. Shows an example of a lease contract for the equipment of "999".

The current month instruction number and the previous month instruction number indicate the meter reading data transmitted from the meter reading device 204 of the power receiving and transforming facility 200. The usage amount item is obtained as a difference between the number of instructions given this month and the number of instructions given last month.

The electricity charge item is the power receiving and transforming facility monitoring device 1.
00 is the value of the obtained electric power rate. The lease fee is a value calculated by the power receiving and transforming facility monitoring apparatus 100 in step S29. What is a service charge? Substation equipment monitoring device 1
00 is a charge generated by the execution of the monitoring process and a charge generated for repairs.

The item of the subtotal is the sum of the three charges of the electricity charge, the lease charge and the service charge. Consumption tax will be added to the subtotal and will be listed in the Total billed amount column.

The transfer date indicates the date when the invoiced amount is transferred to the bank. The early payment deadline is the date when payment is possible with the amount stated in the total billed amount until this period is exceeded, but after this period, payment of an amount exceeding the amount stated in the total billed amount is required. Indicates.

The issued invoices are mailed to the customers by mail, and the customers receive the invoices based on the received invoices.
You will have to pay the amount charged by bank transfer.
In this case, the payee is the leasing company, and the leasing company pays the electric power company (including consumption tax) excluding the leasing charge to the electric power company based on the paid fee. In this case, in order to clarify which customer ID has been paid by the customer, the details or detailed data describing the power charge and the consumption tax for each customer are supplied from the power receiving and transforming facility monitoring device 100. Sent to the company server 210. The server 210 can determine which consumer paid the electricity charge based on the received statement data.

As described above, in the power receiving and transforming equipment monitoring device 100 according to the present embodiment,
The daily power usage pattern of the power receiving and transforming facility is calculated from the past record of power usage. Therefore, it is possible to easily predict the electric power that will be used in the future, from the change in the electric power used so far today and the electric power pattern obtained from the past results.

If the predicted power consumption exceeds the contracted power, a signal for cutting off the power supply to the load with the lowest priority is required. Therefore, it is possible to prevent the power used in the power receiving and transforming facility 200 from exceeding the contracted power.

Further, when the difference between the contracted power and the actual power used is larger than the maximum power of the load whose power supply has been cut off, the electric power is supplied again to the load whose power is cut off. Instructions are sent. Therefore, it is possible to operate the load whose power supply is cut off without exceeding the contracted power.

In the present embodiment, the power that will be used after one hour is predicted, but the prediction period is not limited to this, and it may be predicted in units of minutes or seconds. You may Also, the power consumption after 2 hours or 3 hours may be predicted.

In the present embodiment, the power receiving and transforming equipment monitoring device 100 executes the power receiving and transforming equipment monitoring processing shown in FIG.
You may make it execute by 1.

Further, in the present embodiment, the processing performed by the power receiving and transforming equipment monitoring device 100 has been described. However, the power receiving and transforming equipment monitoring method for executing the power receiving and transforming equipment monitoring processing shown in FIG. 8 and FIG. Needless to say, the invention can be understood as a power receiving and transforming facility monitoring program for causing a computer to execute the power receiving and transforming facility monitoring process shown in FIG.

The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a power receiving and transforming facility monitoring system according to one of the embodiments of the present invention.

FIG. 2 is a block diagram showing a configuration of a power receiving and transforming facility monitoring device according to the present embodiment.

FIG. 3 is a diagram showing an example of a database stored in a storage unit of the power receiving and transforming facility monitoring device in the present embodiment.

FIG. 4 is a diagram showing an example of a power contract database stored in a storage unit.

FIG. 5 is a diagram showing an example of a lease contract database stored in a storage unit.

FIG. 6 is a diagram showing an example of a customer database stored in a storage unit.

FIG. 7 is a diagram showing an example of a reference image of a load database stored in a storage unit.

FIG. 8: Substation equipment monitoring device 1 according to the present embodiment
10 is a flowchart showing a flow of a monitoring process executed at 00.

FIG. 9 is a first diagram showing a relationship between a used power pattern and a predicted power.

FIG. 10 is a second diagram showing the relationship between the power usage pattern and the predicted power.

FIG. 11 is a third diagram showing the relationship between the used power pattern and the predicted power.

FIG. 12 is a flowchart showing a flow of a bill issuing process performed by the power receiving and transforming facility monitoring device in the present embodiment.

FIG. 13 is a diagram showing an example of items described in a bill issued by the power receiving and transforming facility monitoring device in the present embodiment.

[Explanation of symbols]

100 Substation Equipment Monitoring Device, 101 Control Unit, 102
Storage unit, 103 input unit, 104 output unit, 105
Communication unit, 106 external storage device, 107 recording medium, 1
08,202 terminal, 109,203 printer, 11
0 power contract database, 120 lease contract database, 130 customer database, 140 load database, 200 power receiving and transforming facility, 201 personal computer, 204 meter reading device, 210 server, 21
1 terminal, 212 printers, 300 networks,
205A, 205B, 205C, 205D Circuit breaker.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuhiko Shigeno             47 Umezutakaunecho, Ukyo-ku, Kyoto-shi, Kyoto             Inside Shin Denki Co., Ltd. F-term (reference) 5G066 AA02 KA04 KA12 KB07 KD01

Claims (6)

[Claims] 1. A storage unit that stores a priority for each of a plurality of loads to which the power receiving and transforming facility supplies power, a receiving unit that receives the amount of power used per unit time in the power receiving and transforming facility, and the received signal. Based on the amount of electric power used, a calculating means for calculating a temporal change of the electric power used in the past, and a future use based on the calculated temporal change of the electric power used in the past and the present amount of electric power used. A predicting unit that predicts the power to be stored; a selecting unit that selects a load with a low priority from the stored loads when the predicted power exceeds a predetermined value; and A power receiving and transforming equipment monitoring device, comprising: a cutoff signal output means for outputting a signal for cutting off power supplied to a load. 2. The power receiving and transforming equipment monitoring device according to claim 1, wherein the output means further includes means for outputting a warning signal. 3. The supply signal output means according to claim 1, further comprising supply signal output means for outputting a signal for supplying power to the interrupted load when the predicted power falls below the predetermined value and then falls below the predetermined value. Substation equipment monitoring device. 4. A step of receiving an amount of electric power used per unit time in a power receiving and transforming facility that supplies electric power to a plurality of loads, and the time of the electric power used in the past based on the received amount of electric power used. A step of calculating a change, a step of predicting power to be used in the future based on the calculated time change of the used power in the past and the current amount of power used, and the predicted future use When the power exceeds a predetermined value, the method includes the step of selecting a load with a low priority from the plurality of loads, and the step of outputting a signal for cutting off the power supplied to the selected load. , Substation equipment monitoring method. 5. A step of receiving an amount of electric power used per unit in a power receiving and transforming facility that supplies electric power to a plurality of loads, and a time of the electric power used in the past based on the received amount of electric power used. A step of calculating a change, a step of predicting power to be used in the future, based on the calculated temporal change of the used power in the past and the current amount of power used, and the predicted future power usage When the value exceeds a predetermined value, selecting a load having a low priority from the plurality of loads, and outputting a signal for cutting off the power supplied to the selected load to the computer. Let it run,
Substation equipment monitoring program. 6. A computer-readable recording medium recording the power receiving and transforming facility monitoring program.