JP6521784B2 - server - Google Patents

Description

  The present disclosure relates to a technique for improving the use efficiency of resources for business process of each function server, which is used in a power system control system.

  For example, a system such as a power system control system that monitors an object to be monitored by an operator performs task processing by receiving a processing request from the operator console and the operator console, and responds the processing result to the operator console It consists of a function server. In the power system control system, a plurality of consoles and a plurality of function servers are connected via a network. Each function server is configured to receive a processing request from a plurality of consoles.

  Therefore, conventionally, in each function server, work areas (memory for business process processing) corresponding to the number of operation consoles that the function server receives processing are secured. When the function server receives a processing request from the operator console, it performs work processing using a work area (a part of a storage area of the memory) corresponding to each operator console. JP 2012-108655 A (Patent Document 1) describes a system in which a user terminal accesses a business server when a user performs a task. According to Patent Document 1, it is described that, when a user performs a task on a task server via a user terminal, a memory used on the task server secures an area on the task server as a user memory.

JP 2012-108655 A

  However, in recent years, the number of operator consoles implemented in one power system control system tends to increase due to various circumstances such as integration of power system. That is, as the number of consoles increases, resources required for the function server will increase.

  An object of the present disclosure is to improve the use efficiency of resources for business processing of each function server in a power system control system.

The server included in the power system control system according to one embodiment includes the other server included in the power system control system, a communication unit for communicating with each operator console operated by the operator via the network, and the operator console A storage unit including a memory area used when performing processing according to the received processing request, and a control unit for controlling the operation of the server. If the control unit receives a processing request from each operator console and the amount of use of resources provided to the server's arithmetic processing does not meet the reference amount, processing corresponding to the processing request is performed using the memory area of the server. a process receiving unit that performs, when receiving a processing request from each console, the business process corresponding to the other servers sac Chi processing request when the amount of resources to be subjected to arithmetic processing of the server exceeds the reference amount And a relay processing unit that relays a processing request to a specific server other than the server that is performing a business process that executes the operation sequence of the switch of the power system. The relay processing unit of the control unit, which is a server, extracts a specific server to be relayed based on the smallness of the usage amount of the resource to be provided for the arithmetic processing among the other servers, and the extracted specific server is extracted It is configured to relay processing requests to the server, and the smallness of the resource usage is characterized based on the load evaluation value determined by the CPU load factor of the server and the work area utilization factor of the memory area. Do.

  When the server according to the embodiment receives a processing request from each operator console, the server may perform processing corresponding to the processing request or to another server according to the usage amount of resources provided to the server's arithmetic processing. Relay processing requests. Therefore, according to the above-described embodiment, when constructing the power system control system, the resource of the function server is considered in comparison with the case where the function server secures the work area for the number of operation consoles receiving the process in advance. It becomes easy to add a console without.

  The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.

FIG. 1 is a diagram showing a configuration of a power system control system according to a first embodiment. It is a block diagram showing composition of functional server 10A and functional server 10B. FIG. 2 is a block diagram showing a configuration of a console 20. It is a figure which shows the data structure of management table 161A. The function server 10 or the function server 11 receives the processing request from the operation console 20, and performs the task processing according to the processing request according to the use status of the resource of the function server 20, or another function that can be replaced It is a flowchart which shows the process which relays work processing to a server.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description about them will not be repeated.

Embodiment 1
Each apparatus which comprises the electric power grid control system of this Embodiment with reference to drawings is demonstrated. The power system control system includes a plurality of function servers and a plurality of consoles, and these devices are communicably connected to each other via a network such as a LAN (Local Area Network). The function server accumulates data for monitoring and controlling the system by sequentially receiving, via the network, information indicating a state of a monitoring object such as a switch included in the system. For example, the specific function server included in the power system control system collects information indicating the state of each device of the monitoring target via the network, and transmits the collected information to another function server. Synchronize information indicating the status of the monitored object among them. The function server receives an instruction input from the operator console via the network, and executes various business processes in the power system control system. As business processing, for example, execution of operation sequences for operating devices such as switches installed in various places, execution of analysis and report processing when an accident or the like occurs, execution of tidal current calculation, monitoring control by the operator There are simulation runs and other processes to train. Each of the function servers may execute various business processes in the power system control system, or a specific function server may be set in advance to execute a specific business process.

  In the power system control system, the operator performs various operations on the console to monitor the monitored object. For example, the operator performs various operations with reference to the state of the monitored object displayed on the display of the console.

  FIG. 1 is a diagram showing a configuration of a power system control system according to a first embodiment. As shown in FIG. 1, the power system control system shows four function servers of a plurality of function servers (in the example of FIG. 1, the function server 10A, the function server 10B, the function server 11A, and the function server 11B, 4), the server load monitoring server 19, and a plurality of consoles (console 20-1, console 20-2, console 20-3,... Console 20-N) Including.

  In the example of FIG. 1, the first function server that mainly performs a certain task process (for example, an operation sequence for operating the device of the monitoring target) is the function server 10A, the function server 10B (these function servers are collectively referred to as “function A second function server mainly performing business processing different from the first function server, which is also referred to as “server 10” may be referred to as function server 11A, function server 11B (these function servers are collectively referred to as “function server 11)). Each of these function servers holds a business definition file and a definition file indicating functions of the function server, and each function server manages the types of business processes that can be executed by the function server.

  In addition, a plurality of operating consoles (operating console 20-1, operating console 20-2, operating console 20-3,... Operating console 20-N) may be collectively referred to as "operation console 20".

  The server load monitoring server 19 is a server that monitors the load of each function server included in the power system control system. Specifically, the server load monitoring server 19 collects information such as processor load and memory usage ratio from each function server as the load of each function server and stores the information in the memory of the server load monitoring server 19 or the like.

  When the server load monitoring server 19 receives an inquiry from each function server, the information on the load of each function server, the information on the function server with a relatively large load, the information on the function server with a relatively small load, and other information Reply.

  FIG. 2 is a block diagram showing configurations of the function server 10A and the function server 10B. Each function server such as the function server 10 and the function server 11 has the same configuration. Therefore, the configuration of function server 10A will be described in detail, and the description of the configuration of other function servers will not be repeated.

  The function server 10A includes a communication unit 102A, a storage unit 106A, and a control unit 107A.

  The communication unit 102A is a communication interface that performs modulation / demodulation processing and the like for transmitting and receiving signals for the function server 10A to communicate with another device.

  The storage unit 106A is configured by a flash memory, an HDD (Hard Disk Drive), a RAM, and the like, stores a program used by the function server 10A, and stores various data used by the function server 10A.

  In one aspect, the storage unit 106A stores a management table 161A. The storage unit 106A also has a common work area 162A, which is a memory area used when performing processing according to processing requests received from a plurality of consoles. The shared work area 162A is divided into a plurality of blocks (shared work areas 162A-1 and 162A-), with a certain storage area used when performing processing according to a processing request received from one operation console as one work area. 2, ... 162A-N) are included. That is, the memory area is divided into a plurality of work areas, and the plurality of work areas are configured to be shared by a plurality of operator consoles. A work area of one block is assigned to one operator console. The management table 161A is information indicating the correspondence between the work area of each block of the common work area 162A and each operator console. That is, the management table 161A is information for managing the assignment status of each block of the common work area 162A to each operator console.

  The control unit 107A controls the operation of the function server 10A by reading and executing the program stored in the storage unit 106A. The control unit 107A is realized by, for example, one or more processors. The control unit 107A functions as a business process accepting unit 171A and a relay processing unit 172A by operating according to a program. The control unit 107A is, for example, assigned to each console of the load of the control unit 107A and the usage rate of the common work area 162A (common work areas 162A-1, 162A-2,... 162A-N). Based on at least one of the ratio), it is determined whether the usage amount of the resource of the function server 10A does not reach the reference amount or exceeds the reference amount.

  The business process accepting unit 171A receives the process request from each operator console, and when the usage amount of the resource provided for the arithmetic processing of the function server 10A does not satisfy the reference amount, the common work area 162A of the function server 10A is used. Perform processing according to the processing request.

  When the relay processing unit 172A receives a processing request from each operator console, and the usage amount of the resource provided for the arithmetic processing of the function server 10A exceeds the reference amount, another function server different from the function server 10A The processing request is relayed to a specific server (for example, the function server 10B) having a resource capable of executing the task processing according to the processing request. For example, when the relay processing unit 172A receives a processing request from each operator console, the relay processing unit 172A receives a processing request from the operator console based on the management table 161A and exceeds the number that can be accommodated in the common work area 162A. Assuming that the usage amount of the resource provided for the arithmetic processing of the function server 10A exceeds the reference amount, the specific server to be relayed is extracted from the other function servers, and the processing request is relayed to the extracted specific server Do.

  The relay processing unit 172A is, for example, based on the smallness of usage of resources to be provided for arithmetic processing among other function servers different from the function server 10A (for example, a server with a small CPU load, or a work area) The specific server to be relayed is extracted, and the processing request is relayed to the extracted specific server. Specifically, when there are two functional server targets for relaying the process, the relay processing unit 172A relays the process based on the CPU load factor and the work area usage rate of these two candidates. Extract the server The candidates for the function server to relay the process to are a first candidate server and a second candidate server. The CPU load factor of the first candidate server is X1, and the work area usage rate of the first candidate server is X2. The CPU load rate of the second candidate server is Y1, and the work area usage rate of the second candidate server is Y2. The relay processing unit 172A calculates the load evaluation value (coefficient K1 × CPU load factor X1 + coefficient K2 × work area usage factor X2) of the first candidate server and the load evaluation value (coefficient K1 × CPU load factor) of the second candidate server The smaller one of the load evaluation values is extracted as a specific server for relaying the process by comparing the magnitude with Y1 + factor K2 × work area usage rate Y2). For example, the value of the coefficient K1 is set to the value "2", and the value of the coefficient K2 is set to the value "1" (the values of the coefficient K1 and the coefficient K2 are not limited to this). As described above, the relay processing unit 172A multiplies the CPU utilization of the function server and the work area utilization for each of a plurality of functional server candidates by multiplying the coefficients and calculates the sum, and processes the functional server with a small sum. Extract as a specific server to relay.

  Further, the relay processing unit 172A is, for example, a relatively important task processing (for example, task processing which is not desirable to stop the processing) which is determined in advance among other function servers different from the function server 10A. Function servers other than function servers (for example, function servers executing sequences for operating devices such as switches, function servers executing analysis and report processing of accidents, etc.) The server may be extracted as a specific server to be relayed. As a result, it is possible to avoid an increase in the load on the function server that is performing relatively important work processing, and the stability of the monitoring work in the power system control system is enhanced.

  FIG. 3 is a block diagram showing the configuration of the console 20. As shown in FIG. As shown in FIG. 3, the console 20 includes a communication unit 211, a keyboard 231, a mouse 232, a display 233, a storage unit 250, and a control unit 260.

  The communication unit 211 is a communication interface that performs modulation / demodulation processing and the like for transmitting and receiving signals for the console 20 to communicate with another device.

  The keyboard 231 is a device for receiving key input by an operator operating the console.

  The mouse 232 is a pointing device for receiving a mouse operation by an operator who operates the console.

  The display 233 is a device having a display function for presenting information to the operator.

  The storage unit 250 includes an HDD, a RAM, and the like, stores programs used by the console 20, and stores various data used by the console 20.

  The control unit 260 controls the operation of the console 20 by reading and executing a program stored in the storage unit 250. The control unit 260 is realized by, for example, one or more processors. The control unit 260 operates in accordance with a program to exhibit the function as the business processing unit 261.

  The task processing unit 261 communicates with the function server 10 to perform task processing in response to an input operation by the operator, and transmits a processing request to the function server 10. The task processing unit 261 receives a response to the processing request from the function server 10 and displays information on the display 233 based on the received data.

<Data structure>
The data structure of data used by the function server according to the present embodiment will be described with reference to FIG.

  FIG. 4 is a diagram showing the data structure of the management table 161A. As shown in FIG. 4, each record of the management table 161A is information in which the information for identifying each work area is associated with the identification information (the in-use console) of the operator console using each work area. Including.

<Operation>
The operation of the function server 10 of the power system control system will be described with reference to FIG.

  In FIG. 5, the function server 10 or the function server 11 receives a processing request from the operation console 20, and performs task processing according to the processing request according to the usage status of the resource of the function server 20, or can be substituted. Is a flowchart showing processing for relaying business processing to another functional server. The function server 10 or the function server 11 performs the process shown in FIG. 5 by receiving a process request from the console 20. Hereinafter, the operation will be described by way of example in which the function server 10A receives a processing request from the console 20. The operation of the other function servers is the same as that of the function server 10A, and therefore the description will not be repeated.

  In step S501, the control unit 107A of the function server 10A adds the identification information (the number of the operation console) of the console 20 that has received the processing request, and issues the processing request to the business process acceptance unit 171A.

  In step S503, the business process accepting unit 171A refers to the management table 161A and determines whether there is a vacancy in the shared work area 162A as a usage amount of resources to be provided for arithmetic processing of the function server 10A (use of shared work area 162A Determine whether the ratio is below a certain level). If there is a vacancy in shared work area 162A (YES in step S503), business process accepting unit 171A performs the process of step S505. If not (NO in step S503), business process accepting unit 171A performs the process in step S509. Do the processing.

  In step S505, the task processing acceptance unit 171A secures a work area for performing task processing according to the processing request by writing the number of the console that has received the processing request in the management table 161A. The task processing acceptance unit 171A performs task processing according to the processing request from the operation console using the secured work area.

  In step S507, after the business process accepting unit 171A finishes executing the business process according to the process request accepted from the operation console, it clears the work area secured for performing the business process, and manages in step S505. The operator's console number written in the table 161A is cleared. The business process accepting unit 171A sends the process result of executing the business process to the operation console that has accepted the process request.

  In step S509, the job process accepting unit 171A hands over the processing request issued in step S501 to the relay processing unit 172A.

  In step S511, the relay processing unit 172A inquires of the server load monitoring server 19 the candidate for the functional server that can substitute the task processing according to the processing request from the operation console, thereby the candidate information of the substituteable functional server get. For example, in step S511, the server load monitoring server 19 determines the function server 10B as another function server capable of executing the same business process as that of the function server 10A and the function server 10A as a candidate of a substitute function server. Respond to

  In step S513, the relay processing unit 172A acquires, for the candidate functional servers that can be substituted, the CPU load factor, the use status of the resources to be provided for the calculation processing such as the availability status of the work area, and the like. For example, the relay processing unit 172A inquires the resource usage status of the candidate of the replaceable function server acquired from the server load monitoring server 19 or the server load monitoring server 19 to determine the candidate of the replaceable function server. Get resource usage status.

  In step S515, the relay processing unit 172A determines the function server to which the processing request is to be relayed based on the use status of the candidate resource of the substitutable function server, and transmits the processing request to the determined function server. Issue For example, the relay processing unit 172A evaluates the resource usage by multiplying each of the CPU load factor of the candidate alternative functional server and the usage of the work area by a coefficient, and the function server with the smallest resource usage Are determined as function servers serving as an aspect of relaying a processing request.

Second Embodiment
In the example described in FIG. 5, when the function server 10A uses a resource (such as the use status of the shared work area 162A) for the task processing of the function server 10A to exceed a certain usage amount (shared work area) When there is little free space, the relay processing unit 172A relays the processing to another function server. On the other hand, when the function server according to the second embodiment receives a processing request from the console 20, the resource server of each function server that can execute the task processing according to the processing request including the own function server. The usage status is acquired from, for example, the server load monitoring server 19, and a functional server to perform business processing is determined according to the acquired usage status of the resource of each functional server (for example, use of the most resources among a plurality of functional servers It is possible to determine that a small amount of business server performs business processing).

<Summary>
Unlike in the present embodiment, as in the conventional case, the number of work areas corresponding to the number of operator consoles is secured in each function server, and when the function server performs task processing at the time of processing request from the operator console, the operator console With the increase of the required resources will increase. In addition, processing requests are not always issued from all the operator consoles to the function server, and in this case, the time zone in which the work area secured in the function server is not used increases.

  On the other hand, according to the function server in the power system control system of the present embodiment, the work area is shared by the operator console, the use status of each work area is managed by the management table, and according to the use status of the resource of the function server Processing is relayed to another function server. That is, without securing work areas for the number of consoles on the function server side, a number of work areas that can be shared and used by each console are secured, and the number of the console of the request source that issues a processing request Use to manage work area usage. In addition, when it is not possible to secure a work area for processing according to the processing request from the operation console, the processing request is based on data such as the business processing definition file, the function server definition file, and the load status of the function server. To determine the alternative functional server and relay the processing request to the alternative functional server. Therefore, in contrast to the conventional method, the function server of the present embodiment can more effectively utilize the resources for executing the task processing in accordance with the processing request from the operator console. That is, the computer resources required for the function server can be reduced, and the unused state of resources can be further reduced. In addition, since the function server dynamically determines the correspondence between each operator console and the work area, it becomes easy to add an operator console without worrying about the computer resources of the function server.

  If no substitutable function server is found in the processing of the relay processing unit 172A, the relay processing unit 172A once returns a processing request to the task processing receiving unit 171A, and the processing request is returned to the common work area 162A of the function server 10A. It is also possible to wait for task processing until a free space occurs.

  In addition, work areas of a plurality of function servers may be allocated to one operation console.

  In one aspect, the function server and the operator console according to the present embodiment are realized by a processor and a program executed by the processor. A program for realizing the present embodiment is provided by transmission and reception using a network via a communication interface.

  It should be understood that the embodiment disclosed herein is illustrative and non-restrictive in every respect. The scope of the present invention is indicated not by the above description but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

  10, 11 function servers, 19 server load monitoring servers, 20 consoles, 90 networks.

Claims (5)

A server included in the power system control system,
The server is
The other server included in the power system control system, and a communication unit for communicating with each operator console operated by the operator via a network
A storage unit including a memory area used when performing processing according to a processing request received from each of the operation consoles;
A controller for controlling the operation of the server;
The control unit
If the accepted processing request from each of said console, when the amount of resources to be subjected to arithmetic processing by the server is less than the criteria amount corresponding to the processing request using the memory area of the server A processing acceptance unit that performs processing;
When a processing request is received from each of the operation consoles and the usage amount of the resource provided to the arithmetic processing of the server exceeds the reference amount, the task processing corresponding to the processing request is executed among the other servers It is a specific server having possible resources, and includes a relay processing unit which relays the processing request to a specific server which is a server other than a server which is performing a business process executing an operation sequence of the switch of the power system. , Server,
The relay processing unit of the control unit extracts, from among the other servers, the specific server to be the relay target based on the smallness of the usage amount of the resource to be provided for the arithmetic processing, Configured to relay the processing request to a specific server,
The server characterized in that the amount of use of the resource is small based on a CPU load factor of the server and a load evaluation value determined by a work area utilization factor of the memory area.   The server according to claim 1, wherein the load evaluation value is a value obtained by multiplying each of the CPU load factor and the work area usage factor by a coefficient to obtain a sum. The server according to claim 1, wherein the relay processing unit of the control unit extracts a server with a small load evaluation value. The memory area is divided into a plurality of work areas, and the plurality of work areas are configured to be shared by the plurality of operator consoles.
The storage unit is configured to store a management table that manages an assignment state of each work area to each of the operator consoles.
When the relay processing unit of the control unit receives a processing request from each of the operator consoles, the relay processing unit receives the processing request exceeding the number that can be accommodated in the work area based on the management table. The specific server to be relayed is extracted, and the processing request is relayed to the extracted specific server, assuming that the usage amount of the resource provided for the arithmetic processing of the server exceeds the reference amount. The server according to any one of claims 1 to 3, wherein Among the other servers, the relay processing unit of the control unit is a server other than the server that is performing a task sequence for performing the switch operation of the power system, which is a predetermined task process. 5. The server according to claim 4, wherein the server is configured to extract as the specific server to be relayed.

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