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

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

CN101714776AInactive Publication Date: 2010-05-26STATE GRID CORP OF CHINA +1
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  • 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
Comparison scheme
Effect test

Embodiment

[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 is...

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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.

Description

Technical field [0001] The invention relates to a 10KV station power control system for a converter station, in particular designed for the opening and closing operation interlocking and standby automatic switching control of a 10KV station power switch in a high-voltage direct current transmission converter station. Background technique [0002] The station power system of the HVDC converter station provides power for the main circulating pumps, cooling fans and other loads. Due to the importance of the DC transmission system in the power grid, the reliability requirements of the station power system are very high, so the 10KV system is generally The three-circuit incoming line is connected to the three sections of busbars A, B, and C. A bus and B bus independently supply power to the load. figure 1 Shown) [0003] When the power of A and B is lost, the standby automatic switching system should be able to automatically close the corresponding bus tie switch, and continue to supply...

Claims

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Application Information

Patent Timeline
26 May 2010
Publication
CN101714776A
IPC
H02J9/06; G05B15/02; H01H9/20
Inventors
沈志刚