基于DDRTS仿真保护装置误动原因分析

Analysis on the Cause for the Malfunction of the Simulation Protection Device Based on DDTRS

针对线路数字式保护装置不能正确处理高次谐波而引起线路保护装置误动,提出一种基于数字仿真方法,分析高次谐波对保护装置的影响;结合某线路PRS-753保护装置误动,分析保护装置误动原因,提出相应防范建议。

Against the malfunction of the power transmission line protection device caused by fault that the digital protection device cannot handle correctly higher harmonics, this paper proposes a digital simulation method to analyze the effect of higher harmonic to the protection device. With the information about the malfunction case of a PRS - 753 power transmission line protection device, based on the analysis on the cause for the malfunction, measures to prevent the real-function of the power transmission line protection device are given in this paper.