Electric Power ›› 2018, Vol. 51 ›› Issue (6): 77-82.DOI: 10.11930/j.issn.1004-9649.201704067

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Application Analysis and Evaluation Index Research of Dual Channel Line Protection

YANG Guosheng1,2, GUI Qiang3, ZHANG Lie1, XU Kai4, RUAN Siye4   

  1. 1. State Key Laboratory for Power Grid Safety and Energy Conservation(China Electric Power Research Institute), Beijing 100192, China;
    2. North China Electric Power University, Beijing 102206, China;
    3. East China Grid Corporation, State Grid Corporation of China, Shanghai 200120, China;
    4. National Power Dispatching Control Center, Beijing 100031, China
  • Received:2017-04-22 Revised:2018-03-19 Online:2018-06-05 Published:2018-06-12
  • Supported by:
    This work is supported by Science and Technology Project of SGCC (Research on Auxiliary Decision-making Technology of Relay Protection Equipment and Operation).

Abstract: The channel operation condition directly affects the action of line protection, thereby affecting the safe and stable operation of power grids. Starting with the principle of dual channel line protection, analyzing the advantages of dual channel line protection device, the devices made by several main manufacturers of home and abroad is compared in detail. This study also introduces the application of dual channel line protection in the two major power grids in China, and proposes several evaluation indexes of the dual channel line protection. It is suggested to increase the use of dual channel line protection in 500 kV and above voltage system, and make a scientific and reasonable evaluation of their configuration and operation. The purpose is to find out the weakness in the operation process and ensure the safety and stability of the power grids.

Key words: power system, power system security, power grid operation, line protection, fiber channel, dual-channel, evaluation indexes

CLC Number: