10KV station electric control system of convertor station adopting selecting 2 from 3 logic

A technology for controlling system and station power consumption, which is applied in general control system, control/regulation system, computer control, etc., and can solve problems such as power outage accidents in the whole station

Inactive Publication Date: 2010-05-26
STATE GRID CORP OF CHINA +1
0 Cites 5 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0007] In the above system, the ASI host is only responsible for human-computer interaction, and is used to provide operators with an interface to monitor equipment status and issue instructions. If a failure occurs, it will not affect the operation of the 10KV system. The I/O boards correspond to different switchgears, and it is i...
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Method used

Increase two PS830 boards, be processed in parallel by three PS830 boards, realize the equipment self-injection function and operation interlocking logic function jointly, increase 3 and get 2 logics in the program of ASI main frame and switch value output board PS853, i.e. three At least two of the boards ...
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Abstract

The invention discloses a 10KV station electric control system of a convertor station adopting selecting 2 from 3 logic. Two PS830 boards are added, three PS830 boards are utilized to concurrently process and jointly realize a spare power automatic switching function and an operation interlocking logic function; the selecting 2 from 3 logic is added in PS853 programs of an ASI host machine and a switching value output board, i.e. the electric control system can be exported when at least two of three integrated circuit boards sends out same instructions. The damage of any one of the three PS830 boards can not lead to switch fault trip or refusing trip, the 10KV control system can be ensured to run safely and stably without being influenced by the faults of single element. The electric control system has the advantages of convenient use, safety and the like.

Application Domain

Computer controlElectric switches +1

Technology Topic

Embedded systemSystem safety +6

Image

  • 10KV station electric control system of convertor station adopting selecting 2 from 3 logic
  • 10KV station electric control system of convertor station adopting selecting 2 from 3 logic
  • 10KV station electric control system of convertor station adopting selecting 2 from 3 logic

Examples

  • Experimental program(1)

Example Embodiment

[0041] Example
[0042] for figure 1 , 2 As shown in the traditional 10KV control system structure, the monitoring function of the 10kV station power consumption is completed by an ASI host, a PS830 board and some I/O interface boards. They are all single systems without redundancy.
[0043] The ASI host is mainly responsible for the following tasks: Provide 10KV switch, knife switch, and ground knife remote opening and closing command interface; provide 10KV switch, knife switch, and ground knife status monitoring;
[0044] The PS830 board is responsible for the following tasks: the backup automatic switching logic of the 10KV switch; the operation interlocking logic of the 10KV switch;
[0045] PS851 board is responsible for switching signal acquisition;
[0046] PS853 board is responsible for switching signal output.
[0047] In the above system, the ASI host is only responsible for human-computer interaction, which is used to provide operators with an interface for monitoring equipment status and issuing instructions. If a fault occurs, it will not affect the operation of the 10KV system. The I/O boards correspond to different switch devices. If a failure occurs at the same time, if one board fails, only the corresponding switch will be affected, and the operation of the entire 10KV system will not be affected. However, as the core component of the PS830 board, once a hardware and software failure occurs, it is very likely to cause a power outage of the entire station.
[0048] for image 3 , 4 As shown in, 5, 6, and 7, the 10KV station power control system design adopting three out of two logic,
[0049] Two PS830 boards are added, which are processed in parallel by three PS830 boards to jointly realize the automatic switching function and operation interlocking logic function. Add 3 out of 2 logic to the program of the ASI host and the switch output board PS853, that is, three boards It requires at least two pieces to issue the same instruction to export. In this way, damage to any one of the three PS830 boards will not cause the switch to trip or refuse to trip, which can ensure the safe and stable operation of the 10KV control system without being affected by a single component failure.

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