JP3337850B2 - Power system 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 power system monitoring and control system for transmitting and receiving data required for monitoring and control between system monitoring and control devices provided for each power system hierarchy.

[0002]

2. Description of the Related Art In general, a power system monitoring and control system includes:
The power system is divided into a plurality of hierarchies, and a system monitoring and control device is provided for each of the divided hierarchies to perform monitoring control for each of the hierarchies. The hierarchies of the power system are generally divided by voltage class, and are further divided regionally for the same voltage class. In the monitoring control for each layer, data of other layers cannot be read in principle.

[0003] When monitoring and control cannot be performed only by the data held by the own system monitoring and control device, data necessary for monitoring and control is extracted from the system monitoring and controlling device in another hierarchy, and the data is stored in the own monitoring and control device. I keep it. That is, the power system is divided hierarchically for each voltage class, a system monitoring and control device is constructed in the divided layers, and data for monitoring and controlling is stored for each layer. Therefore, data necessary for monitoring control is stored in a database of its own hierarchy in principle, which is advantageous in terms of monitoring control processing efficiency.

FIG. 9 shows such a conventional power monitoring and control system 1. In such a power system monitoring and control system 1, for each system monitoring and control device 2 of each hierarchy,
Data for monitoring and control is stored in the data storage unit 3. That is, the state quantity and equipment data of the system in the target hierarchy are stored in the data storage means 3 of each hierarchy. Then, the monitoring application is executed by the functional application 4 in each level. Therefore, the same data d1 is held by the own system monitoring and control device 2 and the other system monitoring and control device 2 respectively.

Here, depending on the function application 4, there is a case where data in another hierarchy which is not directly monitored and controlled by the own system monitoring and control apparatus 2 is required, and the data is stored in the own data holding means 3. If the data is not stored, these data are taken out from the data storage means 3 of the other monitoring control device 2 using the communication means,
It is stored in its own data storage means 3 and used for monitoring control calculation of the functional application 4.

[0006]

However, when a new functional application is added to the system monitoring control device 2 in each hierarchy and the functional application needs data of another hierarchy, the data is transferred to another system. It must be stored in its own storage means 3. That is, each time a new functional application is added, it is determined whether or not the data of the system monitoring and control device 2 in another layer is required. Must be stored.

[0007] For this reason, in the conventional power system monitoring and control system, it is not easy to add a functional application, and it is difficult to expand the function of each system monitoring and control device. In addition, since data of another hierarchy required for the function expansion is held in its own data storage device, the same data d1 is redundantly held in each data storage means, and the database is huge. Problems in terms of reliability. Although it is conceivable to take out data of another layer by communication means, the current communication means between the system monitoring and control devices is not provided for the purpose of transmitting and receiving data for such monitoring control. ,
As it is, data cannot be transmitted and received efficiently.

An object of the present invention is to provide a highly reliable power system monitoring and control system whose functions can be easily extended.

[0009]

According to the first aspect of the present invention, a power system is divided into a plurality of layers, and a plurality of system monitoring and control devices are provided for each of the divided layers, and monitoring and control is performed between the system monitoring and control devices. In the power system monitoring and control system configured to transmit and receive necessary data, each of the system monitoring and control devices includes a functional application for performing monitoring and control in the divided hierarchy and data used for the monitoring and control. A data storage unit that stores only the data necessary for the monitoring control in the execution of the functional application; and a data storage unit that determines whether the data necessary for the monitoring control is stored in the data storage unit. When it is determined that the data necessary for the monitoring control is stored in the means, the data is output by the functional application. When it is determined that the data necessary for the monitoring control is not stored, another system monitoring and control device that stores the necessary data is searched, and the necessary data is stored in the other inter-system control device. And a data search unit for outputting a search request signal, storing the data transmitted from another system monitoring control device in response to the request signal in the storage unit, and outputting the data to the functional application.

According to the second aspect of the present invention, the power system monitoring and control device provided for each of the divided layers by dividing the power system into a plurality of layers includes a functional application for performing monitoring control in the divided layers. , Data storage means for storing data used for monitoring and control, and whether or not data necessary for monitoring and control is stored in the data storage means for execution of the functional application, and if not, all others And a data management means for issuing a required data search request signal to the system monitoring and control device.

According to the third aspect of the present invention, the power system monitoring and control device provided for each of the divided hierarchies by dividing the electric power system into a plurality of hierarchies includes a functional application for performing monitoring control in the hierarchies. A data storage unit that stores data used for monitoring and control; a search information storage unit that stores in advance another system monitoring and control device that stores data necessary for executing the functional application; It is determined whether or not data necessary for monitoring and control is stored in the data storage means. If the data is not stored, another system monitoring and control apparatus in which the data required for monitoring and control is stored by referring to the search information storage means. Data management means for issuing a search request signal for the required data.

According to the fourth aspect of the present invention, the power system monitoring and control apparatus provided for each of the divided layers by dividing the electric power system into a plurality of layers includes a functional application for performing monitoring control in the divided layers. A data storage unit for storing data used for monitoring control, and a search information storage unit for storing in advance a storage position of the data storage unit in another system monitoring and control device storing data required for executing a functional application. When executing the functional application, it is determined whether data necessary for monitoring control is stored in the data storage means. If not, the data required for monitoring control is stored by referring to the search information storage means. Data for issuing a search request signal for the required data to another storage system And a management means.

[0013]

According to the first aspect of the present invention, when executing the functional application, the data management means determines whether or not data necessary for monitoring and control is stored in the data storage means, and when the data is stored. , The functional application performs an operation using the data. On the other hand, when the data management means determines that the data necessary for monitoring control is not stored in the data storage means, the data search means is activated and the data search means stores the necessary data. The other system monitoring and control device is searched, and a search request signal for the necessary data is issued to the other system monitoring and control device. Then, the functional application executes the calculation using the data transmitted from the other system monitoring control device.

According to the second aspect of the present invention, when executing the functional application, the data management means determines whether or not data necessary for monitoring and control is stored in the data storage means, and when the data is stored. , The functional application performs an operation using the data.
On the other hand, if the data management means determines that the data required for monitoring control is not stored in the data storage means, the data management means sends a search request for the required data to all other system monitoring and control devices. Give a signal. Then, the functional application executes the calculation using the data transmitted from the other system monitoring control device.

According to the third aspect of the present invention, when executing the functional application, the data management means determines whether or not data necessary for monitoring and control is stored in the data storage means, and when the data is stored. , The functional application performs an operation using the data.
On the other hand, if the data management means determines that the data necessary for monitoring control is not stored in the data storage means, the data management means refers to the search information storage means and stores the necessary data stored in the search information storage means. The other system monitoring and control device that is performing the search is searched, and a search request signal for the necessary data is issued to another system monitoring and control device in which data necessary for monitoring and control is stored. Then, the functional application executes the calculation using the data transmitted from the other system monitoring control device.

According to the fourth aspect of the present invention, when executing the functional application, the data management means determines whether or not data necessary for monitoring and control is stored in the data storage means, and when the data is stored. , The functional application performs an operation using the data.
On the other hand, if the data management means determines that the data necessary for monitoring control is not stored in the data storage means, the data management means refers to the search information storage means and stores the necessary data stored in the search information storage means. The storage position of the data storage means in another system monitoring and control device that is performing the search is searched. Then, the storage location of the data storage unit in the other system control device is designated, a search request signal for the necessary data is issued, and the functional application executes an operation using the data transmitted from the data storage unit. I do.

[0017]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram of a first embodiment of the present invention. Although FIG. 1 shows one system monitoring and control device 2, system status and equipment data from its own hierarchy in the power system 5 are input to the system monitoring and control device 2. These data are stored in the data storage means 7 of the database 6. The function application 4 for the monitoring control operation uses the data held in the data storage means 7 to execute the monitoring control operation. In executing the monitoring control operation, the data management of the database 6 is performed. A request for searching for the necessary data is issued to the means 8.

When the data management means 8 receives a data search request from the function application 4, it searches the data in the data storage means 7, and if the requested data exists in the data storage means 7, the data management means 8 Output to application 4. On the other hand, when the requested data does not exist in the data storage means 7, the data search means 9 is started. When the data search means 9 is activated,
The other system monitoring and control device that stores the requested data is searched for, and a search request for the required data is output to the other system monitoring and control device via the communication unit 10.
When the requested data is transmitted from another system monitoring and control device, the data is stored in the data storage unit and output to the functional application 4. The functional application will perform an operation using the transmitted data.

FIG. 2 is a configuration diagram of the power system monitoring and control system in this case. As shown in FIG. 2, the system state quantity and facility data of the target hierarchical system for each system monitoring control device 2 are stored in each data storage unit 7. A data management means 8 for storing, retrieving or updating data in the data storage means 7 is provided, and which system monitoring and control device 2 A data search means 9 for determining whether to search the data storage means 7 is provided. Although not shown, a search request and a transfer of necessary data to the data storage unit 7 of each system monitoring and control unit 2 are performed via the communication unit.

FIG. 3 is a flowchart showing the processing contents according to the first embodiment. The function application 4 is activated by a request from an operator or by a periodic activation (S
1). Upon execution of the functional application 4, the data storage means 7 of the own system monitoring and control apparatus 1 is searched for necessary data (S2). This is performed by its own data management means 8. If all data exists as a result of the search by the data management means 8, the functional application 4 is executed (S3). If there is insufficient data, a search is performed on the data storage means 7 of another system monitoring and control device 2 (S4). This is performed by its own data search means 9. In this case, it is first necessary to determine which system monitoring and control device 2 has the data. In this search, the existing concept of a distributed database system can be used (see JDUllman, "Principles of database and knowled").
ge-base systems '' Computer Science Press CjDate
"An introduction to database systems" Addion-Wes
ley Publishing Company).

When the corresponding data storage means 7 is determined, the data search means 9 issues a search request for necessary data to the corresponding system monitoring and control device 2 (S).
5). In the relevant system monitoring control device 2 that has received the data search request, the corresponding data storage means 7 is searched by the data management means 8 (S6). The data thus obtained is transmitted to the system requesting system monitoring and control device 2 via the communication means 10 (S7), and the functional application 4 of the requesting system monitoring and control device 2 obtains all necessary data. At this point (S8), the function application 4 is executed (S9).

According to the first embodiment, when executing the functional application, when the data management means determines that the data necessary for monitoring control is not stored in the data storage means, the data search means transmits the data to the data search means. Then, the function application executes the calculation using the data transmitted from the other system monitoring and control device storing the necessary data. Can be dealt with without any modification of the system monitoring and control device.

Next, FIG. 4 shows a configuration diagram of a second embodiment of the present invention. In the second embodiment, the data search means 9 in the first embodiment is omitted, and instead, if data necessary for monitoring control is not stored in the data management means 8 in the data storage means, another data search means 9 is used. All system monitoring and control devices are provided with a function of issuing a search request signal for the required data. The other configuration is the same as that shown in FIG.

FIG. 5 is a flowchart showing the processing contents of the system monitoring and control device 2 in the second embodiment. The function application 4 is activated by a request from an operator or by a periodic activation (S1). Function application 4
In executing the process, necessary data is searched for in the data storage means 7 of the own system monitoring and control device 1 (S
2). This is performed by its own data management means 8. If all data exists as a result of the search by the data management means 8, the functional application 4 is executed (S3). If there is insufficient data, a data search request is issued to all other system monitoring and control devices 2 (S4). Upon receiving the data search request, the other system monitoring and control devices 2 activate the data management means 8 and search whether or not the requested data exists in its own data storage means 7 (see FIG. 1). S5). If the data exists, the data is transmitted to the system monitoring control device 2 that has requested the data transmission (S6). Broadcasts like this (Broadcast
The function of ()) has already been realized in a LAN (local area network). Then, the requesting system monitoring and control device 2
When all necessary data is obtained (S7), the functional application 4 is executed (S8).

According to the second embodiment, when data necessary for monitoring and control is not stored in the data storage means when executing the functional application, all other system monitoring and control devices need it. The function application executes a calculation by issuing a data search request signal and using data transmitted from another system monitoring and control device, so that when a new function application is added, necessary data is added. Can be dealt with without modifying the system monitoring and control device. Further, the data search means becomes unnecessary, and the load on the system monitoring and control device is reduced.

Next, a third embodiment of the present invention will be described.
FIG. 6 is a configuration diagram showing a third embodiment of the present invention. The third embodiment is different from the second embodiment in that a search information storage unit 11 is provided, and other system monitoring control in which data necessary for execution of the function application 4 is stored in the search information storage unit 11 in advance. The name of the data storage means of the device is registered. That is, since which data is required by the functional application 4 is known in advance, it is determined in advance which data storage means 7 should be directly searched, and the data storage means 7 is specified. . The other configuration is the same as that of the second embodiment shown in FIG. 4, and therefore, the same components are denoted by the same reference characters and description thereof will be omitted.

FIG. 7 is a flowchart showing the processing contents of the system monitoring and control device 2 in the third embodiment. The function application 4 is activated by a request from an operator or by a periodic activation (S1). Function application 4
In executing the process, necessary data is searched for in the data storage means 7 of the own system monitoring and control device 1 (S
2). This is performed by its own data management means 8. If all data exists as a result of the search by the data management means 8, the functional application 4 is executed (S3).

If there is insufficient data, the data management means 8 refers to the search information storage means 11 (S4), and the data storage means of another system monitoring and control device in which data necessary for executing the function application 4 is stored. Search for a name (S
5). Then, a data search request is output to the system monitoring control device 2 having the searched data storage means 7 (S6). Upon receiving the data search request, the data management unit 8 of the system monitoring and control device 2 searches its own data storage unit 7 (S7), and transmits the requested data to the system monitoring and control device 2 of the request source (S8). ). Then, when all necessary data is obtained (S9), the functional application 4 of the requesting system monitoring and control apparatus 2 executes the functional application 4 (S10).

In the third embodiment, the data storage means 7
If the data required for monitoring and control is not stored in
Referring to the search information storage means 11, the search information storage means 11
Is searched for the data storage means of the other system monitoring and control device 2 which stores the necessary data stored in the storage device. Therefore, when necessary data is added by adding a new function application, Can be dealt with without modifying the system monitoring and control device. Also, necessary data can be searched efficiently.

FIG. 8 is a flowchart showing the processing contents of the system monitoring and control device 2 in the fourth embodiment of the present invention. In the third embodiment described above, the name of the data storage means storing the data required by the function application 4 is registered in advance in the search information storage means. Is not limited to the name of the data storage device 4 but is stored in advance in the search information storage means 11 up to the storage position of the data.

That is, in FIG. 8, the function application 4 is activated by a request from an operator or by a periodic activation (S1). Upon execution of the functional application 4, the data storage means 7 of the own system monitoring and control apparatus 1 is searched for necessary data (S2). This is performed by its own data management means 8. If all data exists as a result of the search by the data management means 8, the functional application 4 is executed (S3).

If there is insufficient data, the data management means 8 refers to the search information storage means 11 (S4), and stores data necessary for execution of the function application 4 in another system monitoring and control device. 7 is searched for (S5). Then, a data search request is output to the searched data storage means 7 (S6). Upon receiving the data search request, the data management means 8 of the system monitoring and control apparatus 2 searches its storage location in its own data storage means 7 (S7), and sends the requested data to the system monitor and control apparatus 2 of the request source. It transmits (S8). Then, when all necessary data is obtained (S9), the functional application 4 of the requesting system monitoring and control apparatus 2 executes the functional application 4 (S10).

According to the fourth embodiment, the data required by the function application 4 and the data storage means 7 of which system monitoring and control device 2 are registered in the search information storage means 11 in advance. Therefore, the search by the data management unit 8 of the data storage unit 4 that stores the required data is not required, and the required data can be searched efficiently. In this case, when the functional application 4 is added, the search information storage unit needs to be modified, but there is no problem because the modification can be easily performed.

[0034]

As described above, according to the present invention, the power system is divided and each of the system monitoring and control devices provided in each of the divided layers is provided with a function application associated with the addition of a new function. Even if there is an addition, it is not necessary to hold necessary data associated with the addition in the system monitoring and control device, so that the function can be flexibly enhanced. In addition, the database is not enlarged, and the reliability is improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a power system monitoring and control system according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing processing contents according to the first embodiment of the present invention;

FIG. 4 is a configuration diagram showing a second embodiment of the present invention.

FIG. 5 is a flowchart showing processing contents in a second embodiment of the present invention.

FIG. 6 is a configuration diagram showing a third embodiment of the present invention.

FIG. 7 is a flowchart showing processing contents in a third embodiment of the present invention.

FIG. 8 is a flowchart showing processing contents in a third embodiment of the present invention.

FIG. 9 is an explanatory diagram of a conventional power monitoring and control system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 power system monitoring and control system 2 system monitoring and control device 3 data storage means 4 functional application 5 power system 6 database 7 data storage means 8 data management means 9 data search means 10 communication means 11 search information means

Claims (4)

(57) [Claims] 1. A power system in which a power system is divided into a plurality of layers, a plurality of system monitoring control devices are provided for each of the divided layers, and data necessary for monitoring control is transmitted and received between the system monitoring control devices. In the supervisory control system, each of the system supervisory control devices is a function application for performing supervisory control in the divided hierarchy, a data storage unit that stores only data used for the supervisory control, and the function A data management means for determining whether or not data necessary for the monitoring control is stored in the data storage means upon execution of an application; and the data management means stores the data required for the monitoring control in the data storage means. If it is determined that the data is output, the function application outputs the data and the data necessary for the monitoring control is stored. If it is determined that the required data is not found, another system monitoring and control device storing the necessary data is searched, and a search request signal for the necessary data is issued to the other inter-system control device. A power system monitoring and control system comprising: a data search unit that stores data transmitted from another system monitoring and control device in the storage unit and outputs the data to the functional application. 2. A power system monitoring system, comprising: dividing a power system into a plurality of layers; providing a system monitoring control device for each of the divided layers; and transmitting and receiving data required for monitoring control between the system monitoring control devices. In the control system, each of the system monitoring and control devices includes a function application for performing monitoring and control in the divided hierarchy, a data storage unit that stores data used for the monitoring and control, and At the time of execution, it is determined whether or not the data necessary for the monitoring control is stored in the data storage means. If the data is not stored, a search request signal for the necessary data is issued to all other system monitoring and control devices. A power system monitoring and control system, comprising: data management means. 3. A power system monitoring system in which a power system is divided into a plurality of layers, a system monitoring control device is provided for each of the divided layers, and data required for monitoring control is transmitted and received between the system monitoring control devices. In the control system, each of the system monitoring and control devices includes a function application for performing monitoring and control in the divided hierarchy, a data storage unit that stores data used for the monitoring and control, and A search information storage unit that stores in advance another system monitoring and control device that stores data required for execution, and whether data necessary for the monitoring control is stored in the data storage unit when the function application is executed. It is determined whether or not the data necessary for the monitoring control is stored by referring to the search information storage means if it is not stored. And a data management means for issuing a required data search request signal to another system monitoring and control device. 4. A power system monitoring system in which a power system is divided into a plurality of layers, a system monitoring control device is provided for each of the divided layers, and data required for monitoring control is transmitted and received between the system monitoring control devices. In the control system, each of the system monitoring and control devices includes a function application for performing monitoring and control in the divided hierarchy, a data storage unit that stores data used for the monitoring and control, and A search information storage unit in which a storage position of the data storage unit in another system monitoring and control device storing data required for execution is stored in advance;
In executing the functional application, it is determined whether or not data necessary for the monitoring control is stored in the data storage unit.If the data is not stored, the data required for the monitoring control is referred to the search information storage unit. Data management means for designating a storage position of the data storage means for another stored system monitoring and control device and issuing a search request signal for required data. system.