JPH0115081B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic operation method for a large number of organically connected system facilities and devices, such as automatic operation of various facilities and devices in a centralized power system monitoring and control system, and in particular, to Concerning parallel execution methods for operating programs.

In a centralized power system monitoring and control system, automatic operation of various facilities and devices is performed by creating an operation program that describes the operations to be performed in advance, and using a computer to execute a series of operations according to this operation program. - Since the devices are organically connected, it is difficult in the prior art to run automatic operation programs in parallel, and the automatic operation programs are executed sequentially. As a result, it takes a long time to execute automatic operations, resulting in problems such as delays in automatic recovery operations in the event of a power generation/substation failure that has a large impact on the grid.

An object of the present invention is to provide an automatic operation method that enables reliable parallel execution of multiple automatic operation programs.

Hereinafter, the system of the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows an overall configuration diagram when the method of the present invention is applied to automatic operation of a power generation substation. 1 is an external storage device, and a series of operation programs are stored in n types 1 ₁ to 1.
1n is stored in memory. Reference numeral 2 denotes an automatic operation control section, which has various functional blocks (to be described later) as shown in the figure, including a CPU (central processing unit) and an internal storage device. Reference numeral 3 denotes a transmission device, which has transmission units TC1 to TCm at m locations to transmit information between the power generation and substations #1 to #m and the automatic operation control section 2. 4 is an operating device that receives instructions from an operator such as starting, canceling, or interrupting an automatic operating program;
It has operating devices such as push buttons, master controllers, switches, and light pens. Reference numeral 5 denotes a display device including a one-line diagram showing the status of the power generation/substation, a screen device for displaying abnormal messages to the operator, and an alarm device for issuing an alarm.
Reference numeral 6 denotes a recording device that prints and records the execution results of automatic operations.

Functional blocks 7 to 18 of automatic operation control section 2
will be clarified each time in the following operation description.

(1) When an automatic operation program operates independently There are two ways to start an automatic operation program. First, when an accident that occurs at a power generation substation is transmitted through the transmission device 3 and input to the TC upstream information receiver 7, the TC upstream information analyzer 8 determines which automatic operation program to start depending on the nature of the accident. , or determine whether no automatic operation program should be started. When starting an automatic operation program, a number uniquely assigned to the automatic operation program is passed to the individual operation controller 9.

On the other hand, when starting individual automatic operation programs at the operator's will, when the automatic operation program to be started is specified using the operation device 4, the automatic operation program is activated via the operator operation master 10 and the man-machine system controller Then, the automatic operation program number is passed to the individual operation controller 9.

In this way, when the automatic operation program number is passed to the controller 9, using that number as a key, the automatic operation program having the corresponding number is selected from among the automatic operation programs 1 ₁ to 1n stored in the external storage device 1. is loaded onto the internal storage device. The automatic operation program loader 12 performs this. After the automatic operation program is loaded, the automatic operation program interpreter 13 is used to interpret each program step. Starting from the first step of the program, the individual operation controller 9 receives the interpretation results using 13 in order, and operates the switches, etc. of the power generation and substation according to the results. Switch operation is performed using the transmission device 3, and the TC control signal generator 14 generates the selection signal, control signal, and selection cancellation signal to be sent there.
The TC control signal transmitter 15 sends the signal to the TC. When a switch or the like at a power generation substation responds to a control signal, it is input to the control unit 2 via the transmission device 3 as a status change, received by the TC upstream information receiver 7, and the TC upstream information analyzer 8 detects the status change content. is analyzed, and if the change is in response to a command from the control unit 2, the controller 9 is notified as a response to the operation. In this manner, when one operation is completed and one program step is completed, the controller 9 proceeds to process the next program step, and the above process is repeated until the end of the program step.

The man-machine controller 11 and the automatic operation execution process display master 16 control the display on the display device 5 regarding the state of the power generation and substation while the automatic operation program is being executed. In addition, the execution record and operation record of the automatic operation program are 11
Then, the automatic operation execution result recorder 17 prints and records on the recording device 6.

In addition, if the execution of the automatic operation program is canceled due to an accident at the power generation/substation being operated while the automatic operation program is being executed, 11.
16, an alarm sounds and a message indicating the details of the abnormality is output to the display device 5.
Furthermore, if the operator wishes to temporarily suspend or cancel the execution of the automatic operation program that is currently being executed, the operator may issue an instruction using the operating device 4, and then the operator will A command to interrupt or cancel is given to the controller 9, and the controller 9 interrupts or cancels the automatic operation program that is being executed. The same procedure is used to resume execution of a suspended automatic operation program.

The man-machine system controller 11 collectively manages the man-machine system, which is generally said to be complex, and serves as an interface between the individual operation controller and the man-machine system.

The above is the effect when the automatic operation program operates independently. The point here is that the individual operation controller 9 is not simply a two-dimensional combination of functional modules necessary for executing an automatic operation program, but rather a unit that connects and brings together each module, giving the individual operation controller 9 a major role. It is in.

(2) When multiple automatic operation programs operate in parallel In order to operate multiple automatic operation programs in parallel, the present invention provides an automatic operation scheduler 18 to centrally manage the execution process of all automatic operation programs. .

By the way, in order to run multiple automatic operation programs in parallel, there is also a method in which a controller 9 is prepared for each automatic operation program to be executed simultaneously, and each controller 9 is operated independently without regard to the others. .

However, this method requires a plurality of controllers 9, which leads to an increase in the internal storage device. Furthermore, each automatic operation program operates completely independently of other automatic operation programs that are running in parallel, so there is a possibility that multiple automatic operation programs will operate the switch in conflict with each other. This violates safe and reliable operation. In other words, when one automatic operation program A operates a switch to stop a transformer at a substation, another automatic operation program B simultaneously executes a switch operation that uses a transformer at the same substation. This may occur.

In view of this point, in the present invention, as described above, the automatic operation scheduler 18 is provided to centrally manage all automatic operation programs to be executed in parallel.

The scheduler 18 will be explained below.

(3) When using an automatic operation scheduler.

FIG. 2 shows a method by which an automatic operation scheduler manages parallel execution of multiple automatic operation programs. Here, 21 ₁ to 21n are automatic operation programs that are executed in parallel, and 22 ₁ to 22n are management tables that manage the execution of individual automatic operation programs. These programs and management tables exist in pairs, and each automatic operation program 2
The execution states of 1 ₁ to 21n are all expressed in the corresponding management tables 22 ₁ to 22n. for example,
It remembers which program step you are executing. The individual operation controller 9 manages the execution of automatic operation programs using the management tables 22 ₁ to 22n. Reference numeral 23 denotes an automatic operation process master table, which is used to centrally manage automatic operation programs to be executed in parallel. The automatic operation scheduler 18 uses a master table 23 to manage automatic operation programs to be executed in parallel. The relationship between the management tables 22 ₁ to 22n and the master table 23 is as follows. The management tables 22 ₁ to 22n store all information for managing the execution of individual automatic operation programs. However, among such information, for example, the program step currently being executed, etc. is necessary to manage the execution of individual automatic operation programs, but it is not necessary to manage the parallel execution of multiple automatic operation programs. do not. What is required for parallel execution is the substation that the automatic operation program is operating and the execution status such as whether the automatic operation program is running or in a waiting state for switch operation. . The master table 23 is a collection of all information from then on.

The automatic operation scheduler 18 uses this master table 23 to execute the following functions.

(i) Understanding and managing the execution status of all automatic operation programs, such as starting, ending, canceling, suspending, resuming, etc.

(ii) Determining whether automatic operation programs can be executed in parallel.

(iii) Interface between man-machine system and automatic operation program execution system.

(iv) Parallel execution management of multiple automatic operation programs.

The automatic operation scheduler 18 having the above functions executes multiple programs in parallel as follows.

The execution of each automatic operation program is managed by an individual operation controller, but when operating a switch or the like, a waiting state occurs in order to check the response to the operation. This waiting time is on the order of seconds, and is time that can be utilized for the execution of other automatic operation programs. When the automatic operation program enters the waiting state, the state is reflected in the master table 23. Automatic operation scheduler 18
searches the master table 23, and if there is an automatic operation program for which an execution request has been issued or an automatic operation program to resume execution, it instructs the individual operation controller to process the execution of the automatic operation program. The individual operation controller 9 interrupts the execution of the previous program in the waiting state. Since the execution status of the automatic operation program at the time of this interruption is all stored in the process tables 22 ₁ to 22n, the individual operation controller 9 manages the execution of the automatic operation program newly specified by the automatic operation scheduler after the interruption of execution. This is performed using tables 22 ₁ to 22n. In addition, when a request to start an automatic operation program is received, the master table 23 is searched to determine whether or not the automatic operation program can be executed. This is done by checking whether an automatic operation program that performs an operation on a location is already running. In this way, automatic operation scheduler 1
8 manages parallel execution of automatic operation programs.

As described above, according to the present invention, it is possible to execute multiple automatic operation programs in parallel, and compared to the case where they are executed in series, the processing time of the multiple automatic operation programs is shortened and the processing capacity is improved. By centrally managing multiple automatic operation programs, safe and reliable operation can be achieved by avoiding situations where automatic operation programs running in parallel operate conflicting switches. In addition, the switch operation waiting time of each automatic operation program can be used to execute multiple automatic operation programs in parallel; in other words, each step of the automatic operation program can be executed continuously until the switch is operated. Therefore, when program steps for checking the status of power generation and substations in the automatic operation program occur continuously, these steps are checked at approximately the same time, and the reliability of the confirmation in the automatic operation program can be improved. Regarding this point, in a method such as the time sharing method, which switches the automatic operation program to be processed at fixed time intervals, there is a possibility that the processing will be interrupted between confirmations, which reduces reliability. It is clear that the method of the present invention is superior.

[Brief explanation of drawings]

Figure 1 is an overall configuration diagram of the method of the present invention, Figure 2
The figure is a diagram showing the parallel execution table and program relationship in FIG. 1. DESCRIPTION OF SYMBOLS 1...External storage device, _11-1n ...Automatic operation program, 2...Automatic operation control unit, 3...Transmission device, 4
...Operation device, 5...Display device, 6...Recording device, 7...TC upstream information receiver, 8...TC upstream information analyzer, 9...Individual operation controller, 10...
Operator operation master, 11...man-machine controller, 12...automatic operation program loader, 13...automatic operation program interpreter,
14...TC control signal generator, 15...TC control signal transmitter, 16...Automatic operation execution process display master, 17...Automatic operation execution result recorder, 18...Automatic operation scheduler, 21 ₁ to 2
1n...Automatic operation program, ₂₂₁ to 22n...Automatic operation process table, 23...Automatic operation process master table, #1 to #m...Power substation.

Claims (1)

[Claims] 1. In an automatic operation system in which a computer executes operations according to multiple automatic operation programs according to the content of operating a large number of system facilities and equipment that are organically connected, the execution state of each automatic operation program is stored respectively. A management table to manage, an automatic operation process master table to centrally manage information necessary for parallel execution management of each automatic operation program shown in this management table, and parallel execution based on the information in this master table. The automatic operation scheduler includes an automatic operation scheduler that grasps and manages the execution status of each automatic operation program, and an individual operation controller that executes each automatic operation program individually. When searching for a waiting time to confirm a response to an operation, it is determined whether or not other automatic operation programs that need to be executed can be executed, and when other automatic operation programs can be executed, the program is executed. An automatic operation method for system equipment and equipment, characterized in that instructions to the individual operation controllers are executed in parallel.