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

By adding two PS830 boards for parallel processing in the 10KV station power control system, and implementing a 3-out-2 logic design in the ASI host and PS853 board, the problem of station-wide power outage caused by the failure of a single PS830 board was solved, and the system efficiency was improved. Redundancy and reliability ensure the safe and stable operation of the 10KV control system.

CN101714776AInactive Publication Date: 2010-05-26STATE GRID CORPORATION OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORPORATION OF CHINA
Filing Date
2008-10-08
Publication Date
2010-05-26
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing 10KV station power control system relies on a single PS830 board for switch operation interlocking and backup and automatic switching logic. As a result, once the board fails, it may cause a station-wide power outage and lacks redundancy and reliability.

Method used

Adding two PS830 boards for parallel processing, combined with the 3-out-2 logic design in the ASI host and PS853 board, ensures that at least two boards issue the same command to perform the switch operation, avoiding false jumps or rejections caused by a single board failure.

Benefits of technology

The safe and stable operation of the 10KV control system is ensured. Even if any PS830 board is damaged, the normal operation of the switch will not be affected, which improves the redundancy and reliability of the system and avoids the risk of a station-wide power outage.

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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.
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