JP3537693B2 - Central processing unit for remote automatic meter reading and load monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a function of transmitting / receiving data to a power meter for remote automatic meter reading and a terminal device for load monitoring / control via a wired (dedicated communication line, public communication line, distribution line) or a wireless communication network. The present invention relates to a central processing unit of a remote automatic meter reading and load monitoring control system having the above.

[0002]

2. Description of the Related Art FIG. 12 is a block diagram showing a configuration of a conventional remote meter reading / load monitoring control system, for example. FIG.
Is a central processing unit 1 having a data display function.
And a wired (dedicated communication line, public communication line, distribution line) or wireless communication network 2, a remote meter reading watt-hour meter 3 connected to the central processing unit 1 via the communication network 2, It comprises a terminal 4 and a controlled device 5 such as an air conditioner or a water heater. The remote meter reading watt-hour meter 3 receives the meter reading command message from the central processing unit 1 and returns the meter reading value to the central processing unit 1 as a response message, thereby remotely executing meter reading in the central processing unit 1. can do. Further, the load monitoring / control terminal 4 receives the command message of the power-off from the central processing unit 1 and turns off the power of the control target device 5, whereby the load control in the system can be remotely performed.

FIG. 13 shows a database configuration provided in the central processing unit 1 shown in FIG. 12. The database includes a customer information database T1 for storing a customer name, a customer number, an address, a contracted capacity, etc., and a power meter for remote meter reading. Remote meter reading database T2 that stores information necessary for meter reading processing, such as meter management number, customer number, and capacity, and meter reading value database that stores meter reading results (meter readings) for each remote meter wattmeter. T3 and a load monitoring control database T4 including a load monitoring control terminal number, a control target device type, a customer number, and the like.
The above databases are all composed of characters and
It is stored in a data format using numbers and symbols.

[0004]

The conventional remote meter reading and load monitoring and control system is configured as described above, and transmits a meter reading command from the central processing unit 1 to the remote meter reading power meter 3 and performs load monitoring. The command transmission to the control terminal 4 is all performed using only character information.

[0005] Therefore, if the watt-hour meter 3 or the load monitoring and control terminal 4 installed on the customer side breaks down,
When it is necessary to inspect or repair it, the place where the meter wattmeter for meter reading 3 and the terminal 4 for load monitoring and control are installed is displayed on a house map or the like based on the address registered in the customer database. There was a problem that had to be checked.

Further, when load control is performed at the time of peak power demand, for the same reason as described above, the information as the installation location of the device to be controlled is only character information such as an address. There is a problem that it is difficult to grasp the regional effects and the situation due to.

[0007] Further, in the planning of the capacity expansion and the extension work of the transformer as the distribution equipment, the database held by the distribution load monitoring and control system and the database held by the distribution equipment management system are not linked, and the load control information is not controlled. There is a problem that it is difficult to carry out a construction plan in consideration of the above.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is intended to display a map, a facility layout diagram, and a system diagram while reading a meter of each watt-hour meter and issuing a command to each load monitoring control terminal. It is an object of the present invention to provide a remote meter reading / load monitoring control system capable of displaying a result.

[0009]

Means for Solving the Problems The invention of claim 1 has the following features.
At least, a customer database that stores information about consumers
Meter and meter reading that stores the result of meter reading by meter reading meter
Value database and topographic map data to store topographic map data.
Database and a facility to store equipment drawing data for distribution equipment.
Equipment map database, terrain drawing data and equipment drawing data
And a data display input device for displaying data.
On the map and equipment diagram displayed on the input device, specify the distribution equipment.
By specifying the above distribution equipment from the equipment diagram database
Search for the identification number of the
Search for customers connected to the distribution equipment from the database,
According to the meter reading value database,
Search for power consumption and calculate the maximum load of the above distribution equipment
It is characterized by the following.

[0010]

FIG. 1 is a block diagram showing the configuration of a remote automatic meter reading and load monitoring control system according to the present invention. The system of the present invention includes a data display / input device 11 having display means such as a CRT and input means such as a keyboard and a mouse, and a central processing unit 12 which performs remote automatic meter reading or load monitoring control by integrally managing various databases. Have. Although not shown, the central processing unit 1
As shown in FIG. 12, reference numeral 2 denotes a watt-hour meter 3, a load monitoring and control terminal 4, an air conditioner via a wired (dedicated communication line, public communication line, distribution line) or a wireless communication network. And a control target device 5 such as a water heater.

The central processing unit 12 includes remote meter reading software 12a, load monitoring control software 12b, customer information management software 12c, and map information management software 12d. The remote meter reading software 12a includes a meter reading database 13a and a meter reading value database 13b.
The load monitoring control software 12b stores the load monitoring control database 13c in the customer information management software 12
c denotes a customer database 13d, and the map information management software 12d includes a drawing database 13e such as topographic map data, facility map data, and system diagram data, and a facility attribute database 13f.

The meter reading database 13a stores information for meter reading processing, that is, data such as a meter number of a meter reading instrument, a facility management number, a customer number, and a meter reading date. The meter reading value database 13b stores the result of meter reading by the meter for meter reading, and stores data such as the meter number for meter reading, meter reading date, time, and power consumption. The load monitoring control database 13c includes information on load monitoring control equipment,
That is, the terminal number of the load monitoring control device, the facility management number,
It stores data such as customer numbers. The customer database 13d stores information on the customers, that is, data such as a customer number, an instrument number, a contracted capacity, and a supply transformer number. The topographic map database stores topographic map data of houses, roads, etc.
Symbol, telephone pole of meter reading meter or load monitoring control terminal,
It stores equipment drawing data of power distribution equipment such as electric wires, transformers, switches, etc., and the system information database stores meter connection meters, load control terminals, connection information of controlled devices, and power distribution of utility poles, electric wires, transformers, etc. Equipment connection information is stored, and the equipment attribute database stores equipment attribute information such as the specifications of meter reading meters, load control terminals, and controlled devices.

Base technology 1. The prerequisite technique 1 of the present invention is to perform remote automatic meter reading on a meter for meter reading (such as a watt hour meter) in the remote automatic meter reading / load monitoring control system of FIG. By simply designating a symbol of a meter reading meter (electricity meter or the like) on a map or a facility diagram by an input means such as a mouse, the meter reading meter is specified and remote meter reading is automatically performed.

The current value meter reading process according to the prerequisite technique 1 will be described with reference to the flowcharts of FIGS.

When the current indication value of the watt-hour meter is remotely measured, the operator first displays a map on which the watt-hour meter to be measured exists on the display means (CRT) of the data display / input device 11. At this time, the map information management software 12d
Displays facility drawing data such as a wattmeter, a telephone pole, and a wire symbol on a topographic drawing data of a house, a road and the like based on a topographic map database 13e.

Next, the operator operates on the map and the equipment diagram displayed on the data input / display device 11 as in S21.
The symbol of the watt-hour meter to be measured is specified by an input means such as a mouse, and the present value meter reading button is pressed down in S22. Then, the map information management software 12d
The coordinates on the map of the specified electricity meter symbol (10
Based on (0, 500), a facility management number (0010) corresponding to the coordinates is searched in the facility diagram database 13e.
In this way, in S23, the identification number (facility management number) of the symbol of the specified watt hour meter is searched.

Next, in S24, the remote meter reading software 12a reads the meter number (100200) of the watt-hour meter from the meter reading database 13a based on the identification number (equipment management number 0010) of the searched watt-hour meter symbol. Search for. Then, in S25, the central processing unit 12 generates a command message incorporating the instrument number (100200) retrieved by the remote meter reading software 12a, and transmits the command message to the corresponding watt-hour meter. The watt hour meter that has received the command message transmits the current value meter reading result as a response message,
In S26, the central processing unit 12 receives the response message. Then, in S27, the data display input device 11 displays the current value meter reading result on the map as shown in the screen display example of FIG. 1, and ends the meter reading process.

As described above, according to the prerequisite technique 1 , when remote meter reading is performed on a meter reading meter (electric power meter or the like), the meter displayed on the data display input device 11 and the meter reading on the equipment diagram are used. Only by selecting the symbol of the meter (watt hour meter) with an input means such as a mouse or the like, the meter reading target can be designated, and the operability is greatly improved as compared with the conventional work of designating the meter reading target using character information.

Base technology 2. Normally, the meter reading of the electricity usage etc., for each customer, measures the indicated value of the watt hour meter on a preset day of each month, and calculates the used amount of the month based on the difference from the indicated value of the previous month, Prerequisite technology 2
Then, the setting and changing of the meter reading date are also performed by designating a meter reading meter (watt hour meter) symbol on the map and the equipment diagram displayed on the data display input device 11 with a mouse or the like.

That is, when the operator designates a meter reading meter (watt hour meter) symbol on the map and the equipment diagram displayed on the data display / input device 11 with a mouse, the map information management software 12d transmits the power designated by the mouse. Based on the coordinates of the symbol of the meter on the map, a facility management number corresponding to the coordinates is searched from the facility diagram database 13e. Next, the remote meter reading software 12a displays the meter reading date of the watt-hour meter in the meter reading database 13a based on the equipment management number of the symbol. Then, the operator sets and changes the meter reading date of the watt-hour meter using the keyboard or the like of the data display input device 11, whereby the remote meter reading software 12a reads the meter reading date of the watt-hour meter on the meter reading database 13a. Is changed and stored on the set or changed meter reading date.

As described above, according to the prerequisite technique 2 , when setting or changing the meter reading date of a meter for meter reading (watt hour meter or the like), the meter displayed on the data display input device 11 and the meter reading on the equipment diagram are used. The symbol of the meter (watt hour meter) is selected by input means such as a mouse to display the meter reading date of the meter reading meter, and the meter reading date is set or changed by a keyboard or the like. The operability is remarkably improved as compared with the work of setting and changing the meter reading date of meter reading meters (electricity meter, etc.) based only on information.

Prerequisite technology 3. In the above prerequisite technology 1 , if there is a meter reading meter (watt hour meter) without a response message even though the central processing unit 12 transmits the meter reading command message, the meter reading meter (watt hour meter) fails. Can be determined. In the third embodiment, a meter reading meter (watt hour meter) having no response message as described above
Is specified by the central processing unit 12, and the data display input device 1
1. To be clearly displayed on the map projected in 1.

That is, the remote meter reading software 12 of the central processing unit 12
a retrieves the equipment management number of the meter from the meter reading database 13a, the map information management software 12d searches the topographic map database 13e based on the equipment management number, and finds the coordinates of the watt hour meter on the map. . Then, the central processing unit 12 displays the display means (CR) of the data display input device.
T, etc.), a map and a facility diagram are displayed, and the symbols of the watt-hour meters considered to be faulty are displayed so that they can be clearly distinguished by changing colors. The person in charge of repairing or replacing the failed watt-hour meter prints the displayed screen or outputs it by hard copy or the like, and confirms a place to be dispatched.

As described above, according to the base technology 3 , the meter for meter reading (watt hour meter) is specified by the central processing unit 12 and clearly displayed on the data display / input device 11, so that The person in charge of repair and replacement can immediately confirm the place to be dispatched.

Prerequisite technology 4. In the base technology 4 of the present invention, in the remote automatic meter reading and load monitoring control system of FIG. 1, the central processing unit 2 performs load control processing on a load control target device. The operation status of the load control target device in the designated area is displayed on the map and the facility diagram, and the power of the load control device is turned on / off via the load control terminal device.

Regarding the load control processing according to the prerequisite technique 4 ,
A description will be given based on the flowcharts of FIGS. Here, as the load control processing, a case is assumed in which the operation of a load control target device (for example, an air conditioner) in a certain area is stopped to perform an operation of reducing the load power amount in the area.

First, in S31, the central processing unit 12
The map information management software 12d searches for all load monitoring and control target devices existing in the area by using the facility diagram database 13e, and creates a target device list file. Next, in step S32, the operation status of all the load control target devices in the target device list file is checked, and a running device list file is generated. That is,
The central processing unit 12 transmits a command message to all the load control terminal devices in the list file, and the load control terminal device confirms the operation status of the load control target device and returns a response message to the central processing device 2. Generates a running device list file.

Then, at S33, the display means (C
(RT etc.) on the drawing to be displayed, for example, by changing the symbol color of the operating device. Next, in S34, the operator designates the symbol of the load control target device, which has been color-changed and displayed on the display means of the data input display device 11, by using a position input means such as a mouse, and in S35, presses the load control execution button. Then, based on the coordinates (110, 500) on the map of the symbol of the load control target device specified by the mouse or the like, the map information management software 12d uses the facility management number (0020) corresponding to the coordinates in the facility diagram database 13e. Search for. In this way, in S36, the equipment management number of the symbol of the load control target equipment is searched from the equipment diagram database.

Next, in S37, the load monitoring control software 12b transmits the retrieved facility management number (0020).
, The terminal number (200200) of the terminal device controlling the load control target device is searched from the load monitoring control database 13c. Then, in S38, the central processing unit 12
Generates a command message incorporating the terminal number (200200) retrieved by the load monitoring control software 12b, and sends the command message to the corresponding load monitoring control terminal device.
The load monitoring control terminal device that has received the command message transmits a power-off signal to the control target device, and stops the operation of the control target device. Subsequently, the terminal device for load monitoring and control returns the operating state (operating or stopped) of the controlled device after control as a response message. Finally, the central processing unit 12 receives the response message in S39, and the color of the symbol of the load control target device whose color has been changed to the operating state on the display unit of the data display input device 12 in S40 is indicated by a color indicating that the symbol is stopped. And the load control process ends.

FIGS. 7 and 8 show examples of screen display of load monitoring control according to the prerequisite technology 4 , FIG. 7 shows an example of a screen before load monitoring control, and FIG. 8 shows an example of a screen after load monitoring control. . In this example, the stop processing is performed by load monitoring control on the control target devices (air conditioners) of the customer numbers 1002, 1003, and 1005.

As described above, according to the prerequisite technology 4 , when performing control on the load monitoring and control target equipment, the operator displays the map and the equipment clearly displayed on the display means of the central processing unit so that the operation is in progress. This can be done by designating the symbols of controlled devices (electric water heaters, air conditioners, etc.) on the diagram with a position input device such as a mouse. The load control command is prevented from being wasted, and the operability is improved.

As shown in FIGS. 7 and 8, the operator can perform load monitoring control while viewing the map displayed on the screen, so that the operator can recognize the area where the equipment to be controlled exists. In addition, the load monitoring operation can be performed from the overall viewpoint.

Premise technology 5. In the above-described base technology 4 , as the load control result, the operation status (on / off) of the load monitoring control target device on the map is controlled so that the symbol color or the like changes, for example. Time intervals (30 minutes,
Or one hour) is automatically measured, and the power consumption before and after the load control for the certain time is compared. And
As shown in FIG. 9, when the power consumption of each consumer before and after the load control operation is displayed as a numerical value or a graph on the display means of the data display input device 11, the visibility of the load reduction effect by the load control operation is improved. Can be improved.

Embodiment 1 In the remote automatic meter reading and load monitoring and control system of FIG. 1 according to the first embodiment of the present invention, a predetermined distribution device (such as a transformer) is connected to a plan for increasing the capacity of a distribution device (such as a transformer) or constructing additional work. The customer is searched to calculate the maximum power consumption at the peak power demand.

[0035] The power consumption calculation processing of the power distribution device according to the first embodiment will be described with reference to the flowchart of FIGS. 10 11.

Here, it is assumed that replacement work of a certain transformer is planned. When replacing a transformer, it is necessary to determine the specification (capacity) of the transformer. So first, S
At 41, the operator designates the symbol of the transformer to be constructed, which is shown on the map and the equipment diagram displayed on the data display input device of the central processing unit 12, by using a position input device such as a mouse. Then, based on the coordinates (110, 500) of the specified transformer symbol on the map, the map information management software 12d reads the identification number (facility management number (020)
1)) Search. In this way, in S42, the identification number (facility management number) of the specified transformer is retrieved from the facility diagram database 13e.

Next, in S43, based on the identification number of the transformer searched (the equipment management number 0201), the customer information software 12c transmits the information to the transformer (the equipment management number 020).
The customer numbers (1001, 1002,
..) Is retrieved from the consumer database 13d to create a consumer list file. Then, in S44, the remote meter reading software 12a reads the meter reading value database 13b.
From, each customer in the customer list (customer number; 100
For 1,1002, ...), the value with the largest power consumption in the past is searched. Finally, in S45, the central processing unit 12 calculates the maximum load power that can be applied to the transformer by summing the maximum power consumption of each important house.
As a result, the operator can determine the specification (capacity) of the transformer based on the maximum load power amount, and can perform a more accurate and efficient construction plan.

[0038]

According to the first aspect of the present invention, a data display input is provided.
Power distribution equipment is specified on the map and equipment diagram displayed on the power device.
The use of each customer connected to the distribution equipment
Since the amount of power is calculated or displayed, the operator
Determines distribution equipment specifications (capacity) based on maximum load power
Can perform more accurate and efficient construction plans.
It becomes possible .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a remote automatic meter reading and load monitoring control system according to the present invention.

FIG. 2 is a flowchart showing a remote automatic meter reading process according to the first technology .

FIG. 3 is a flowchart illustrating a remote automatic meter reading process according to the first base technology .

FIG. 4 is a flowchart illustrating a load control process according to a technology 4 ;

FIG. 5 is a flowchart illustrating a load control process according to a base technology 4 ;

FIG. 6 is a flowchart illustrating a load control process according to a technology 4 ;

FIG. 7 is a diagram illustrating an example of a screen display before load monitoring control according to a prerequisite technique 4 .

FIG. 8 is a diagram showing an example of a screen display after load monitoring control according to the base technology 4 ;

FIG. 9 is a diagram illustrating an example of a screen display before and after load monitoring control according to a premise technology 5 .

FIG. 10 is a flowchart showing a process of calculating a maximum load of a distribution device according to the first embodiment of the present invention .

FIG. 11 is a flowchart showing a process of calculating the maximum load of the distribution equipment according to the first embodiment of the present invention .

FIG. 12 is a block diagram showing a configuration of a conventional remote meter reading / load monitoring control system.

FIG. 13 is a diagram showing a database configuration provided in the central processing unit of FIG. 12;

[Explanation of symbols]

2 Communication network, 3 Watt hour meter, 4 Terminal device for load monitoring and control, 5 Controlled equipment, 11 Data display and input device, 1
2 Central processing unit, 12a Remote meter reading software, 1
2b Load monitoring control software, 12c Customer information management software, 12d Map information management software, 13a Meter reading database, 13b Meter reading value database, 13c Load monitoring control database, 13d
Customer database, 13e Topographic map / facility map / system information database, 13f Facility attribute database.

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Claims (1)

(57) [Claims] 1. At least information on a customer is stored.
Customer database and meter reading meter
Meter reading database for storing results and topographic map data
Topographic map database for storing power and equipment drawings of power distribution facilities
Equipment map database that stores data and terrain drawing data
Data display and input device for displaying data
On the map and equipment diagram displayed on the data display and input device.
By specifying the electrical equipment, from the equipment diagram database
Search for the identification number of the above-mentioned power distribution equipment, and based on this identification number,
Customers connected to the above distribution equipment from the customer database
Of the above customers by using the meter reading value database.
Search for the maximum power consumption of the last
Automatic meter reading and load monitoring system characterized by calculating
Central processing unit of your system.