Hunan Electric Power ›› 2025, Vol. 45 ›› Issue (6): 107-113.doi: 10.3969/j.issn.1008-0198.2025.06.014

• Power Grid Operation and Control • Previous Articles     Next Articles

Analysis of Causes and Countermeasures for Maloperation of Distance Protection on Wind Farm Transmission Lines

XU Biao, LI Hui, TAN Liming, OUYANG Fan, LI Gang   

  1. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410208, China
  • Received:2025-08-21 Revised:2025-10-12 Online:2025-12-25 Published:2026-01-13

Abstract: Starting from an on-site misoperation accident of the distance protection for a wind farm transmission line, this paper analyzes the causes of such misoperation from the perspective of criterion mechanism, and conducts a comparative analysis on the special protection behaviors under this fault scenario. On this basis, performance tests and criterion comparisons on the distance protection devices of mainstream relay protection manufacturers are further carried out through methods such as on-site fault recording playback and RTDS simulation tests. The analysis reveals the mechanism by which the wind farm transmission lines affect the distance protection, and finally corresponding strategies are formulated at the level of protection criteria in combination with on-site realities.

Key words: wind farm, distance protection, outlet fault, real-time digital simulation(RTDS), performance test

CLC Number: