基于RTDS的线路非稳定性高阻接地故障仿真

Simulation of Unstable High-resistance Ground Fault Based on RTDS Platform

RTDS是挖掘和处理保护装置隐形判据的有效仿真手段。本文立足于非稳定性高阻接地故障下隐形判据闭锁线路保护案例,在准确把握非稳定高阻接地电阻变化特征的基础上,详细剖析了基于RTDS的非稳定性高阻接地故障建模仿真的试验需求、平台、设备参数、试验项目,试验结果表明所提出的仿真模型能够准确拟合非稳定性高阻接地故障特征。文章在总结提炼试验结论的基础上,进一步提出了优化保护装置动作性能工程建议。

RTDS is an effective simulation method for mining and processing the hidden criterion of protection device.Based on the case of invisible criterion blocking line protection under unstable high resistance ground fault,this paper analyzes the test requirements,platform,equipment parameters and test items of modeling and simulation of unstable high resistance ground fault based on RTDS,on the basis of accurately grasping the characteristics of the unstable high resistance ground resistance change.The test results show that the proposed simulation model can accurately fit the characteristics of unstable high resistance ground fault.Based on the summary of the test results,this paper further puts forward engineering suggestions for optimizing the operation performance of the protection device.