JPS61264834A - Multi-processor system control system - Google Patents

Abstract

PURPOSE:To decentralize the peak load of a master station to slave stations by providing a process control computer to the master station and a controller using a microprocessor to each slave station so as to give the same effect as that brought about by the execution of a processing program by a master station CPU. CONSTITUTION:The master station CPU 1 executes the program and applies the state input request of a circuit breaker CB13 of a slave station 2. A processing program required for the processing is transferred by the microprocessor (MPU) 2-3 of the slave station 2 via a data way 9-1 from the CPU 1. The MPU 2-3 receives the processing program, executes it and inputs the state of a circuit breaker 3 via a process input/output controller 2-4. After the end of processing of the circuit breaker 3, the state input processing of a circuit breaker 4 is executed. Then it is discriminated that the data of the circuit breaker 4 is obtained from the MPU 2-3 of the slave station 2 and the processing program is transferred from the MPU 2-3 to the MPU 2n-3 of the slave station 2 by a similar method.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a multi-processor system control method, and particularly to a multi-processor system control method for controlling a plurality of slave stations from a master station.

[Technical blueprint for invention] The case of power system control will be explained below as an example.

Among power system facilities, for example, power transmission lines, transformers, etc. are stopped for a limited time for maintenance work, and are restored when the maintenance work is completed.

In order to stop/restore these facilities, circuit breakers,
Connect equipment such as line switches, grounding, and various protective relays.
It is necessary to perform operations such as turning off, using/locking, etc.

For example, in order to stop/restore a power transmission line, an electric station (substation) connected to the line, typically far away, must be used.
All related equipment operations must be performed in an orderly, error-free, and prompt manner.

For this reason, conventionally, as shown in FIG. 5, the main station 1 is equipped with a process control computer 1-1 and a data transmission device @1-2, and the slave stations 2 and 2n are equipped with a data transmission device 2-1, 20-1, respectively. ,
The control device 2-2 and 2n-2 were provided, and these were connected by a data transmission device. Then, in the master station 1, a processing program for executing the operation procedure is generated and stored in advance, and when the operation start time arrives, the master station 1 sequentially transmits operation signals to each slave station, and the equipment connected to the slave stations is Operations were carried out according to individual instructions from the main station.

[Problems in the background art] This type of operation in power system operation is generally performed frequently, and moreover, is often performed on multiple independent pieces of equipment at the same time in the morning and evening. The number of attached devices to be operated is enormous.

As a result, the load on the process control computer 1-1 of the main station 1 reached its peak, making it impossible to obtain sufficient responsiveness1, and as a result, prompt operations were sometimes impeded (Reference Material 2 Toshiba Review, April 1982 issue, vOshi 37, N
n5).

[Object of the Invention] The present invention was made in order to solve the above problems, and an object of the present invention is to provide a multi-processor system control method that distributes the peak load of the main station to the slave stations.

[Summary of the Invention] In the present invention, a process control computer is placed in the main station, a control device using a microprocessor is placed in the slave station, and each is connected in a ring shape by a data way, and the main station computer controls equipment operations. Generate a processing program for the operation, send it to the slave station connected to the device to be operated via the data way, and execute the processing program steps in the slave station connected to the device to perform the necessary device operation. carried out by
After the processing program is transmitted to all necessary slave stations, it is returned to the master station, and the master station CPU produces the same effect as executing the processing program.

[Embodiments of the Invention] Examples will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment for explaining a multi-processor system control method according to the present invention.

In Figure 1, each slave station has a data transmission device 2-1.2.
n-1, a microprocessor 2-3.2n-3 and a process input/output control device 2-4.2n-4, and communication between the main station and each slave station and between the slave stations is via a data way 9-1. They have a structure that allows them to be interconnected and exchange data at high speed.

FIG. 2(a) is a functional block diagram of the main station CPU 1, which includes a program generation function 10-1 that creates an arbitrary processing program for stopping/restoring equipment, and sends the processing program to an arbitrary slave station. a sending function 10-2 for receiving processing programs; a receiving function 10-3 for receiving processing programs from any slave station;
and an execution start control function 10-4. In addition, 1
0-5 are processing programs.

FIG. 2(b) is a functional block diagram of the slave station, which has the same functions as the master station. Note that 10-6 is an input/output system t[1 function.

Next, in order to explain the operation, regarding the stoppage of a certain power transmission line, the breaker CB1.3 connected to slave station 2, the grounding line switch LS1.5, and the CB connected to slave station 2n will be explained.
2.4. Let us take as an example a method for turning on/off the grounding line switch LS2.6 in a predetermined order without error.

Now, on the main station CPt11, program generation function 10-1
As a result, a processing program 10-5 is generated. The processing program 10-5 stores station numbers from which process data can be input/output.

In order to execute this processing program, first, the main station CPU
1, the main processing program 10-5 is executed.

FIGS. 3(a) and 3(b) show the flowchart v-1 for explaining the operation.
, FIGS. 4(a) and 4(b) show the device status input request process and the restorer operation request process.

First, in step P1, a status input request for CB1.3 of slave station 2 is made. At this time, the data of CB1.3 is obtained from IPIJ 2-3 of the slave station 2, and the data of CB1.3 is obtained from the slave station 2's HP
A processing program transfer request P3 is made to U2-3.

As a result, the sending function 10-2 of the master station CPυ1 is activated, and the HPU 2- of the slave station 2 is activated via the data way 9-1.
3, the data necessary to continue the processing program in the HPU 2-3 of slave station 2, that is, program logic, intermediate data, and program counter (hereinafter collectively referred to as "processing program") is be transferred.

The program counter is a counter that indicates the position during execution of a processing program.

In the slave station 2, the slave station 2 (7) HPU 2-3 (7) receiving function 10-3 is activated, receives the processing program 10-5, and executes the received processing program 10-5 from the position indicated by the program counter. , input/output control function 1
0-6 and the CB via the process input/output control device 2-4.
1. Enter the status of 3.

After completing the process related to CB1, CB2 status input process P4
Execute. At this time, CB2.4 data is the HP of slave station 2.
It is determined that the processing program 10-5 can be obtained from the HPU 2-3 of the slave station 2, and in a similar manner, the processing program 10-5 is obtained from the HPU 2-3 of the slave station 2.
3, it is transferred to HPU 2n-3 of slave station 2n.

In this way, the processing program 10-5 is sequentially transferred to the slave HPU that can input and output process data necessary to execute the processing steps.

When the processing program 10-5 ends, it is transferred to the main station CPU 1 by executing the end processing P13 (the third
(b)), the main station CPU 1 detects the end state and completes the operation of one equipment.

Even if the dataway used in the present invention is directly replaced with a data network using a network type data exchanger,
The essence of invention remains the same.

[Effects of the Invention] As explained above, according to the present invention, the following effects can be obtained.

■Load is distributed and responsiveness can be improved.

The load on the master station is reduced by distributing processing among the slave stations.

In particular, peak loads are smoothed out.

■Slave station microcontroller can be downsized.

Since the processing program executed by the slave station microcomputer is transferred to the master station or other slave stations as necessary, multiple use of the same resource by a plurality of processing programs is possible. Therefore, the device can be made smaller and less expensive.

■Functionality can be easily expanded.

Since the program executed by the slave station is generated by the master station, a program having any function can be created in the master station and executed without modifying the slave station.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the multi-processor system control method according to the present invention, Fig. 2 is a functional block diagram of a master station and a slave station, Fig. 3 is a flowchart explaining the operation, and Fig. 4 is a diagram of equipment. FIG. 5 is a diagram showing the state input request and device operation request processing, and is a diagram explaining the conventional method. 1...Main station (CPU) 2.2n...Slave station 1-1...Process control computer 1-2.2-1.2n-1...Data transmission device 2-2
．． 2n-2...control device 2-3.2n-3-? Microprocessor (HPU) 2-
4.2n-4...Process input/output control device 3.4...
・CB 5.6...LS (grounding line switch) 7.8...
・Bus line 9-1...Data way 10-1
...Program generation function 1σ-2...Sending function 10-3...Receiving function 10-4...Execution start control function 10-5...Processing program 10-6...Input/output control Function (7317) Agent Patent attorney Kensuke Norichika (and 1 other person) Figure 2 (α9 (b), Figure 4)

Claims (1)

[Claims] In a power system control system that transmits control commands from a process control computer in a master station to multiple slave stations via a dataway to control each slave station, each slave station is equipped with an individual microprocessor and these stations are mutually controlled. By connecting in a ring shape through a data way, a master station computer generates and stores a processing program for operating equipment in advance, and transmits the processing program to slave stations that require equipment operation. , execute the steps of the corresponding processing program in the slave microprocessor, and after transmitting the processing program to all slave microprocessors,
A multi-processor system control method characterized by returning data to the main station.