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Electric power SCADA parallel control method based on minimal machine

A technology of parallel control and minicomputer, which is applied in the direction of machine execution devices and concurrent instruction execution, etc., which can solve the problems of undiscovered public reports, long execution time, and long time of power outage, etc., to speed up the accident handling time and time efficiency The effect of improving and reducing work intensity

Active Publication Date: 2014-01-15
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These schemes have the following problems: first, sequential control, for lines with long lines, the time for power outage and transmission is longer; second, conventional parallel control, the operations are run in parallel from a macro perspective, but in fact each step of the operation is still Sequential, that is, in the same time slice, only one control is executing the operation, and there is no synchronization mechanism between the parallel operation sequences. In order to ensure that each group sequence sequence can complete the operation at the same time, the adjacent steps of the same parallel control sequence need to increase Delay, after synthesis, its execution efficiency is higher than that of sequential control
However, for operations with many steps in a single sequence, the execution time will be longer because each sequence lacks a synchronization mechanism and needs to increase the delay.
[0005] After searching, no published reports on the same or similar documents as the subject of the present invention were found

Method used

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  • Electric power SCADA parallel control method based on minimal machine
  • Electric power SCADA parallel control method based on minimal machine
  • Electric power SCADA parallel control method based on minimal machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Example 1: As shown in Table 1-3, the content of the program-controlled card can realize 4 substations, and simultaneously perform 1500V power-off and transmission operations, and the operations of each station will not affect each other.

[0078] If the sequential control method is used, 14 remote control steps are required, while the parallel control can simultaneously control 4 substations in the same control step, and the maximum operation steps of a single substation are 4 remote steps. Therefore, the total operation time for all operations is approximately equal to the entire completion time of a single station, that is, 4 steps of remote control operation steps, compared with sequential control, the time can be accelerated by 4 times. For more program-controlled cards that can be remotely controlled in more substations at the same time, the efficiency is improved even more.

Embodiment 2

[0079] Embodiment 2: The content of the program-controlled card is shown in Table 1-3. After a certain substation is out of operation, it can handle accidents. Switch the power supply switch mode of this station, and start the power supply switch of other stations at the same time. In this embodiment, although each substation can perform remote control operations at the same time, the switches that need to be operated need to be based on the switch status and position of other substations as logic conditions during specific operations. Conventional parallel control cannot judge the logic in real time. Conditions are generally resolved using sequential controls for such operations. However, the parallel control method of the present invention can well solve such problems.

[0080] For example, the original operation in the table requires 10 steps. If parallel control is used, it is the same as in embodiment 1. The total operation time for all operations is approximately equal...

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Abstract

The invention discloses an electric power SCADA parallel control method based on a minimal machine. The method comprises the steps that the minimal machine adopts an explicit parallel instruction to compute an EPIC architecture, and a Unix operating system is used; according to a parallel program control card data structure, a parallel control packet column, a parallel control ranked number column and an execution condition column are added; a main thread controls each parallel control packet sub thread, and a timer thread is built; each sub thread is in communication with the main thread through an operating state, the operating steps, three state fields of the waiting state, and an instruction field of the waiting state; each sub thread is in dependent communication with an electric power SCADA system. According to the electric power SCADA parallel control method based on the minimal machine, multi-substation simultaneous parallel remote control operation can be achieved, the working intensity of rail transit power dispatchers for everyday interruption and delivery of current is greatly relieved, the original situation that all substations conduct interruption and delivery of current in sequence is changed to the situation that all the substations conduct interruption and delivery of current at the same time particularly for interruption and delivery of current for a long-circuit overhead line system, and execution time efficiency is significantly improved.

Description

technical field [0001] The present invention relates to an urban rail transit electric power SCADA system (electric power monitoring system), in particular to a parallel control method in an urban rail transit electric power SCADA system (electric power monitoring system), which realizes monitoring of multiple stations of the electric power SCADA system Simultaneously perform remote control operation. Background technique [0002] Compared with other electric SCADA systems, rail transit electric SCADA systems have higher requirements for remote control operation. Due to the large number of station substations on rail transit lines, power outage maintenance operations are very frequent after the lines are out of service at night. There are many switching operations involved in power outages, so it is very important to provide a set of efficient, safe and stable automatic remote control functions. [0003] In order to improve the work efficiency of power dispatchers, reduce ...

Claims

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Application Information

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IPC IPC(8): G06F9/38
Inventor 金凌玲吴泾程畅葛鑫
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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