JP4672684B2 - Power system monitoring and control service providing system - Google Patents

Description

  The present invention relates to a power system monitoring and control service providing system that can perform system operation using services provided by a plurality of server computers connected to each other via a network.

  Conventional power system monitoring and control systems include systems equipped with unique functions such as a central power supply command system, system control system, and distribution automation system. By using these several types of systems, the entire power system is monitored. I was in control.

FIG. 7 is a diagram showing a configuration example of a typical power system monitoring and control system, in which one central power supply command system 1, two centralized control systems 2, and three power distribution automation systems 3 are networked. NW _-1 and NW _{-2 are} connected to monitor and control the entire power system (see, for example, Non-Patent Document 1).

  Generally, the central power feeding system 1 is a system for controlling the balance between power generation and load of the entire power system, and one system is installed. The centralized control system 2 divides a high-voltage system of a power system that is an object of monitoring control into a plurality of sections, and one is installed for each section. In the example of FIG. 7, the high-voltage power system to be monitored and controlled is divided into two, and one centralized control system 2 is arranged for each of the sections.

  The distribution automation system 3 divides a low-voltage system of a power system that is a monitoring control target into a plurality of sections, and is installed one for each section. In the example of FIG. 7, the low-voltage power system to be monitored and controlled is divided into three, and one distribution automation system is arranged for each division.

  FIG. 7 shows typical examples of functions installed in various systems constituting the power system monitoring control system, and the functions installed in the central power supply command system 1 are E1, E2, E3, E4, and S1, The functions mounted on the two centralized control systems 2 are all S1, S2, S3, S4 and D1, and the functions mounted on the three power distribution automation systems 3 are all D1, D2, D3 and S4.

Here, functions E1 to E4, S1 to S4, and D1 to D3 of the power system monitoring and control system are as follows.
E1: Power supply equipment monitoring, E2: Power generation plan, E3: Power generation control, E4: Power supply equipment maintenance,
S1: System equipment monitoring, S2: System equipment control, S3: System equipment maintenance, S4: Distribution line control, D1: Distribution line monitoring, D2: Distribution line accident recovery, D3: Distribution equipment maintenance.

  Advances in computer technology are remarkable, and the use of computers by human systems is defined as services, and client computers that are directly used by human systems are automatically connected to server computers that execute services desired by human systems. It has become possible to provide necessary services.

  As a specific example, content provision on the Internet is also a service called content provision, which can be called this form. A client computer that is directly used by a human system has a WWW browser installed, and DNS (Domein Name System; IP address on the Internet can be accessed by a person without knowing the location of the server computer that carries the content desired by the human system. Human system can receive services (contents) by the system of WWW server)

  A service delivery mechanism that is more advanced than the form of content provision on the Internet has also been realized. Grid computing technology (Grid Computing; creating a high-performance computer virtually by connecting multiple computers via a network) The system is standardized as a system that takes out processing capacity and storage capacity as much as necessary from there. By using this grid computing technology, the functions that make up the power system monitoring and control system are defined as services, and human systems can use the services to monitor and control the power system. ing.

In order to achieve high reliability as shown in FIG. 8, the central power supply command system 1, the centralized control system 2, and the power distribution automation system 3 are each represented by two server computers (simply referred to as “server” in the figure). In general, a redundant configuration such as duplexing with SC- ₁ and SC- ₂ is used, and one of the redundantly configured server computers SC is operated online, and the rest is operated by hot standby operation. It was a driving mode that lasted.
"Electrical Engineering Handbook", published by the Institute of Electrical Engineers of Japan, April 1978, pp 1048-1051

  As shown in FIG. 7, the functions installed in the central power supply command system, the system control system, or the distribution automation system that constitute the conventional power system monitoring and control system are for each type of system to fulfill its role by itself. Some of them had the same functions as other types of systems.

  As shown in FIG. 8, the system configuration for increasing the reliability of the conventional system is redundantly configured by providing two server computers SC for each system as shown in FIG. For this reason, the system installation cost has been increased.

  The present invention has been made to solve the above-described problems, and by distributing and arranging functions necessary and sufficient for configuring a power system monitoring control system in a plurality of server computers, the same function is provided in the plurality of server computers. This makes it possible to provide services as a central power supply command system, centralized control system, and distribution automation system without installing the system, thereby reducing the number of redundant server computers required for high reliability. It is an object of the present invention to obtain a power system monitoring and control service providing system that can reduce system installation costs.

  In order to achieve the above object, the invention of the power system monitoring and control service providing system according to claim 1 is a plurality of servers that are connected to each other via a network and that are installed by distributing functions constituting the power system monitoring and control system. A client computer connected to the network and installed with a WWW browser, and by specifying a function of a desired system of the power system monitoring control system from the client computer, the client computer side The system is configured to provide a desired service from the plurality of server computers.

  According to the power system monitoring and control service providing system of the present invention, the functions constituting the power system monitoring and control system are distributed and installed in a plurality of server computers so that they do not overlap, and a desired desired operation is performed from the client computer. By designating functions necessary for the system, a desired service can be received from a plurality of server computers. In this case, it is not necessary to install the same function on a plurality of server computers in duplicate, so that it is possible to achieve a great effect such as a reduction in system construction cost.

  Embodiments of a power system monitoring control service providing system according to the present invention will be described below with reference to the drawings. In addition, the same code | symbol or a related code | symbol is attached | subjected to the part which is common throughout each embodiment, and description is abbreviate | omitted suitably.

(Embodiment 1)
First, the configuration of the first embodiment will be described with reference to FIGS. 1 and 2.
FIG. 1 is a configuration diagram of a power system monitoring control service providing system according to the first embodiment, and FIG. 2 is a diagram illustrating an operation example according to the first embodiment.

As shown in FIG. 1, the power system monitoring and control service providing system according to the first embodiment includes a plurality of server computers SC- _{1 to} SC _{- 5} and an arbitrary number of client computers CC- _{1 to} CC. and _-n together are configured to connect to each other at the network NW, among a plurality of server computers _SC -1 _{~SC -5,} E2 of the functions of the power system monitoring control system in the server computer _{SC -1,} install the function of the E3 and S2, to install the functionality of the server computer _{SC -2} to E4 and D1, install the functionality of the server computer _{SC -3} to S4 and D2, functions of the server computer _{SC -3} to S4 and D2 install, the functions of the server computer _{SC -4} to S1 and S3 It was installed, installing the functionality of the server computer _{SC -5} to E1 and D3.

Here, the functions E1 to E4, S1 to S4, and D1 to D3 of the power system monitoring control system are the same as those described with reference to FIG.
On the other hand, a WWW browser is installed in each of the client computers CC- _{1 to} CC _{- n} , and services (contents) are provided by a DNS or WWW server mechanism without knowing the location of the server computer on which the content desired by the human system is mounted. Can be provided.

Next, an operation example of the power system monitoring control service providing system will be described with reference to FIG.
The power system monitoring control service providing system according to the first embodiment is any one of the “central power supply command system”, “centralized control system”, and “distribution automation system” that constitutes the power system monitoring control system. The server computers SC- _{1 to} SC _{- 5} provide functions necessary for the system by specifying the human system operations, that is, the input means including the keyboard, mouse, display, etc. of the client computers CC- _{1 to} CC _{- n.} It is possible to use any service that can be obtained.

For example, when a human system intends to use a service as an operator of the central power supply command system, in other words, the operator of the central power supply command system changes the power system monitoring control service providing system shown in FIG. When the user wants to operate, the function E1, the function E2, the function E3, the function E4, and the function S1 are designated from the input means of the client computer CC- ₁ . In this case, the functions D2 and S4 installed in the server computer SC- ₃ are not functions necessary for the central power supply command system and are not specified from the client side.

In these input operations, since the WWW browser is installed in the client computer, the server computers SC- _{1 to} SC _{- 5} are equipped with the functions E1 to E4 and the function S1 desired by the human system, respectively. There is no need to be aware of this at all.

As described above, when an input operation regarding the central power supply command system is performed from the client computer CC- _1, the functions of the monitoring control system installed in each of the five server computers SC- _{1 to} SC _{- 5} are included. 2, that is, the function E1 installed in the server computer SC- ₅ , the functions E2 and E3 installed in the server computer SC- ₁ , and the server computer SC- _2. 1 and the function S1 installed in the server computer SC- ₄ can be used, and the power system monitoring control service providing system shown in FIG. 1 is regarded as a “central power supply command system”. It can be used by operators.

Similarly, when a human system intends to use a service as an operator of the centralized control system, the operator of the centralized control system receives functions S1, S2, and S3 from the input means of the client computer CC- _1. , Function S4 and function D1 are designated.

Then, S1 and S3 installed in the server computer SC- ₄ and the server computer SC- ₁ among the functions constituting the monitoring control system installed in the five server computers SC- _{1 to} SC _{- 5.} The functions of S2 installed, S4 installed in server computer SC- ₃ , and D1 installed in server computer SC- ₂ can be used, and the power system monitoring and control service of FIG. The provided system can be used as a “centralized control system”.

Similarly, when the human system intends to use the service as an operator of the distribution automation system, the operator of the distribution automation system can use the function D1, the function D2, the function from the input means of the client computer CC- _1. Designate D3 and function S4.

Then, D1 installed in the server computer SC- ₂ and the server computer SC- ₃ are installed in the functions constituting the monitoring control system installed in the five server computers SC- _{1 to} SC _{- 5.} 1 and the function of D3 installed in the server computer SC- ₅ can be used, and the power system monitoring control service providing system of FIG. 1 can be regarded as a “distribution automation system”. it can.

In the above description, when the power system monitoring control service providing system is to be operated as a “central power supply command system”, the function E1, the function E2, the function E3, and the function E4 are input from the input unit of the client computer CC- _1. However, the present embodiment is not limited to this, and for example, “from the list displayed on the display of the input device of the client computer CC- ₁ ” By selecting “central power supply command system”, the functions of E1, E2, E3, E4, and S1 may be selected and used collectively. The same applies when the power system monitoring control service providing system is operated as a “centralized control system” or “distribution automation system”, and also when the power system monitoring control service providing system is operated in other embodiments. is there.
Furthermore, the client computer that designates the function described above is not limited to CC- ₁ , but may be another client computer such as CC- _n .

As described above, in the conventional technology, there is an overlapping part in the functions constituting the central power supply command system, the centralized control system and the distribution automation system, so it was necessary to install similar functions in each system. According to the first embodiment, the functions E1 to S1 and D1 constituting the power system monitoring and control system are distributed and installed so as not to overlap with a plurality of server computers, and input to the client computer CC- ₁ By specifying a function necessary for the system to be operated from the means, it is possible to receive the service of the power system monitoring and control system desired on the client side.

  As a result, since it is not necessary to install the same function on a plurality of server computers in duplicate, it is possible to realize a great effect such as a reduction in system construction cost.

(Embodiment 2)
Next, Embodiment 2 will be described with reference to FIG.
FIG. 3 is a diagram showing an example of functional arrangement for high reliability in the second embodiment.
The power system monitoring and control service providing system according to the second embodiment includes a plurality of server computers SC- _{1 to} SC _{- 5} distributed and connected to a wide area network NW, and an arbitrary number of client computers CC- _{1 to} CC _{- n.} However, in order to make the power system monitoring and control service providing system an operation mode for high reliability, the first embodiment is different from each server computer SC _{− 1 to} SC- ₅ have different functions of the power system monitoring control system installed.

That is, in the case of the second embodiment, the functions E1, E2, E3, E4, S2, S3 and D2 among the functions constituting the power system monitoring control system are installed in the server computer SC- ₁ . In addition, among the functions, E2, E3 and S2 displayed in bold frames are operated online to provide corresponding services, and a power system monitoring control system is configured for the server computer SC- ₂ . The functions E1, E2, E4, S2, S4 and D1 in the functions are installed, and the E4 and D1 indicated by the thick frame are operated online to provide the corresponding service. I have to.

Similarly, the functions E3, E4, S1, S3, S4, D2 and D3 among the functions constituting the power system monitoring control system are installed in the server computer SC- ₃ , S4 and D2 are operated online to provide corresponding services, and E3, S1, S3, S4, D1 in the functions constituting the power system monitoring control system for the server computer SC- ₄ , D2 and D3 are installed, and S1 and S3 are operated online in the function to provide the corresponding service, and the power system monitoring and control system is provided to the server computer SC- ₅ . Install the functions of E1, E2, S1, S2, D1, and D3 among the functions that make up E1 and D3 is operated online in the functions are to provide the appropriate service.

  According to the power system monitoring control service providing system configured as described above, the functions of E1, E2, E3, E4, S1, S2, S3, S4, D1, D2, and D3 that constitute the power system monitoring control system Are installed on three different server computers, and a set of E1, E2, E3, E4, S1, S2, S3, S4, D1, D2, and D3 functions are online. Service is provided.

Under such operating conditions, when the function E4 of the power system monitoring control system operating on the server computer SC- ₂ stops due to some trouble, it is generally implemented as a highly reliable technology for the power system monitoring control system. The function E4 installed in the server computer SC- ₁ is operated online by the configuration control function thus started, and the provision of the service is started. As a result, the operator who used the system as the central power supply command system has the functions E1, E2, E3, E4 and S1 related to the central power supply command system regardless of the stop of the function E4 of the server computer SC- _2. Service can be provided without interruption.

  At this time, in the example of FIG. 3, there are five server computers SC in total, but the functions of E1, E2, E3, E4, S1, S2, S3, S4, D1, D2, and D3 that constitute the monitoring control system are as follows. Since both are installed on three different server computers, the other two corresponding functions can continue to provide services even if any function is stopped.

  Therefore, the centralized power supply command system, the centralized control system, and the power distribution automation system are each duplexed, but the triple system is composed of five server computers rather than the system composed of six server computers in total. Reliable reliability can be realized, and it is possible to construct a more reliable system while reducing hardware costs.

This embodiment can also be applied when stopping the server computer, is relevant functions installed functions offered an installed service server computer SC _-2 to the server computer SC _-2 other server computer By providing a service instead, high reliability equivalent to a triple system can be realized with fewer server computers. This high-reliability method realizes a redundant configuration system that increases the multiplicity by distributing and installing the same functions on those server computers as the number of server computers increases. Will be able to.

(Embodiment 3)
Next, Embodiment 3 will be described with reference to FIG.
FIG. 4 is a diagram illustrating an example of a server computer replacement procedure in the third embodiment.
The power system monitoring and control service providing system according to the third embodiment has the same functional arrangement as that of the server computer and the power system monitoring and control system as in the third embodiment. Is different.

That is, in the third embodiment, instead of stopping the functions of S1 and S3 that provide the service at the server computer SC- ₄ , the S1 of the server computer SC- ₅ and the server computer SC- ₃ , which are the same functions, respectively. Start S3 and start providing the service. Then, after S1 of the server computer SC- ₅ and S3 of the server computer SC- ₃ start the service, the server computer SC- ₄ is stopped and removed.

Then, a new server computer (not shown) is installed in the wide area network NW, and the functions E3, S1, S3, S4, D1, D2, and D3 installed in the removed server computer SC- ₄ are added to the new server computer. To install.

  According to the third embodiment described above, when a server computer breaks down, it is possible to provide a service with as high reliability as that of the conventional system in FIG. 8 until a new server computer is arranged and installed. Therefore, in the configuration of the conventional system, in order to reduce the influence of the decrease in reliability during the suspension period, etc., the server computer as a spare part was secured from the viewpoint of shortening the time not becoming the redundant configuration. The spare part becomes unnecessary, and the investment cost to hardware can be reduced.

  In the conventional system, the server computer prepared as a spare is generally included in the maintenance target period as a spare part, and there is a problem that the maintenance period elapses with purchase. However, in the third embodiment, it is possible to achieve the same high reliability as the conventional one without securing a server computer as a spare part.

(Embodiment 4)
Next, Embodiment 4 will be described with reference to FIG.
FIG. 5 is a diagram showing an example of a procedure for changing the number of server computers in the fourth embodiment.
In the fourth embodiment, the server computers SC- _{1 to} SC _{- 5} are functional arrangements that constitute the same power system monitoring and control system as in the third embodiment. However, a new function E5 for setting the operation mode at the time of adding a function. The difference is that a server computer SC- ₆ is additionally installed.

  In power system monitoring and control systems, new functions are frequently added from the viewpoint of function enhancement. When it is a problem that the load that increases due to the processing added when adding a new function hinders the characteristics of real-time processing, all functions are transferred to a more capable server computer. It was. This transfer work is expensive work, and during the transfer period, it is often impossible to fully use all the functions of the power system monitoring and control system. There have been various ways to reduce it.

  In order to realize a power system monitoring and control system as a combination of services, if there is a concern that the load will increase due to newly added functions and hinder real-time performance, it is necessary to eliminate the influence.

When the newly added function E5 is installed in any of the server computers SC- _{1 to} SC _{- 5} , when the function E5 starts to provide services, the real-time property is expected to be lowered in FIG. As shown, a new server computer SC- ₆ is installed in the network NW, and the function of E5 is installed therein.

Since the E5 service installed in the newly installed server computer SC- ₆ can be used in the same manner as other services by indexing the server computer that provides the service by the grid computer, the human system using the central power supply command system Can be used without being aware of the difference.

In the example of FIG. 5, the functions E4 and D2 of the server computer SC- ₁ are also transferred to the newly installed server computer SC- ₆ from the viewpoint of leveling the processing load. In addition to adding new functions, even when a server computer with higher processing capacity is introduced, the functions of the power system monitoring and control system are rearranged to level the processing load on the server computer in real time. It is possible to realize a system that improves the above.

(Embodiment 5)
Next, Embodiment 5 will be described with reference to FIG.
FIG. 6 is a diagram showing an example of service provision corresponding to the organization change in the fifth embodiment.
The fifth embodiment is a functional arrangement that configures the power system monitoring and control system with the same server computer as that of the third embodiment, but a conventional centralized control system is configured to operate the system when the system operation method is changed. Using the functions of S1, S2, S3, S4, and D1 and the functions of D1, D2, D3, and S4 that constitute the distribution automation system as a system that integrates the functions of the centralized control system and the distribution automation system It is different in point to do.

  The functional configuration of the power system monitoring and control system is closely related to system operation, and if the system operation policy changes, the functions installed in the system will be affected. In general, the system operation is performed by dividing into a centralized control system and a distribution automation system according to classification based on the voltage class, but the operation form is not invariant, and the system form can be changed by changing the system operation policy.

  There is a possibility that the division based on the voltage class will be abolished, and there will be a possibility of new system operation, but at that time it has both the functions installed in the conventional centralized control system and the functions installed in the conventional distribution automation system A system is required.

  FIG. 6 shows an example of realizing a system having both of these functions, and it is possible to cope with a new system operation depending on which function is used without introducing a new system. System can be realized.

The figure which shows the structural example of Embodiment 1 of this invention. The figure which shows the operation example of Embodiment 1 of this invention. The figure which shows the example of function arrangement | positioning for high reliability of Embodiment 2 of this invention. The figure which shows the example of a server computer replacement | exchange procedure of Embodiment 3 of this invention. The figure which shows the example of a procedure which changes the number of server computers of Embodiment 4 of this invention. The figure which shows the service provision example corresponding to the organization change of Embodiment 5 of this invention. The figure which shows the example of arrangement | positioning of the conventional electric power system monitoring control system. The structural example figure of the conventional electric power system monitoring control system.

Explanation of symbols

  SC ... server computer, CC ... client computer, NW ... network, E1 ... power feeding equipment monitoring, E2 ... power generation plan, E3 ... power generation control, E4 ... power feeding equipment maintenance, S1 ... system equipment monitoring, S2 ... system equipment control, S3 ... System equipment maintenance, S4 ... distribution line control, D1 ... distribution line monitoring, D2 ... distribution line accident recovery, D3 ... distribution equipment maintenance.

Claims (5)

A plurality of server computers connected to each other by a network and distributedly installing functions constituting a power system monitoring and control system; and a client computer connected to the network and having a WWW browser installed thereon,
The client computer is configured to provide a desired service from the plurality of server computers by designating a desired system function of the power system monitoring and control system from the client computer. Power system monitoring and control service providing system.   Of the functions that make up the power system monitoring and control system, the same functions are installed in a multiplex manner among a plurality of server computers so that they do not overlap with one server computer. So that only one service is provided for each function, and when the function providing the service stops, the service is provided by the same function installed in the other server computer. The power system monitoring and control service providing system according to claim 1, wherein:   Of the functions that make up the power system monitoring and control system, the same functions are installed in a multiplex manner among a plurality of server computers so that they do not overlap with one server computer. The system is operated so that only one service is provided for each function, and when the server computer is replaced, the service provided by the server computer is provided from another server computer. The power system monitoring and control service providing system according to 1.   Of the functions that make up the power system monitoring and control system, the same functions are installed in a multiplex manner among a plurality of server computers so that they do not overlap with one server computer. If there is a concern that the real-time performance will be reduced when adding new functions, install a new server computer and include the new server computer. 2. The power system monitoring and control service providing system according to claim 1, wherein the function assignment is determined and installed so as to level the load.   Of the functions that make up the power system monitoring and control system, the same functions are installed in a multiplex manner among a plurality of server computers so that they do not overlap with one server computer. In the power system, only one service is provided for each function, and when the system operation policy changes, the service corresponding to the function according to the operation policy is received from the plurality of server computers. The power system monitoring control service providing system according to claim 1, wherein the system is operated.

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