CAJ | 학술논문

针对220 kV线路高阻接地故障过程中线路两侧双重化保护动作行为不一致的问题，依据故障时序分为3个阶段分析故障保护报文信息和录波，同时通过故障仿真计算验证，找出保护动作不一致的原因和影响保护动作行为的现场缺陷，提出保护定值整定方法及保护装置应用的优化逻辑，以使高压线路发生高阻接地时两侧双重化保护装置能够快速、一致的动作，最大限度地保护电网和设备安全。应用结果表明：提出的保护整定方法易于计算，适用于220 kV及以上线路保护定值计算，利用背侧电源大小整定保护启动值从根本上解决了线路两侧保护动作不一致问题。
침대220 kV선로고조접지고장과정중선로량측쌍중화보호동작행위불일치적문제，의거고장시서분위3개계단분석고장보호보문신식화록파，동시통과고장방진계산험증，조출보호동작불일치적원인화영향보호동작행위적현장결함，제출보호정치정정방법급보호장치응용적우화라집，이사고압선로발생고조접지시량측쌍중화보호장치능구쾌속、일치적동작，최대한도지보호전망화설비안전。응용결과표명：제출적보호정정방법역우계산，괄용우220 kV급이상선로보호정치계산，이용배측전원대소정정보호계동치종근본상해결료선로량측보호동작불일치문제。
Aiming at the problem of duplicate protection action inconsistency on both sides of the line in the process of high-resistance grounding fault of 220 kV transmission line,according as fault time order divides three phases to analyze fault protection report information and fault waveform, simultaneously by fault simulation calculation and verification,finds out the causes of protection action inconsistency and protection action behavior defect,puts forward the setting method and optimization logic for application for protection device,when high-resistance grounding fault occurs on high voltage line,both sides of duplicate protection device can act fleetly and congruously, uttermostly protects the security of power grid and equipments. The application result shows that the proposed protection setting method calculate easy,suits for 220 kV and above line protection setting calculation,using dorsal power source value setting protection start-up value solves the problem of protection action inconsistency on both sides of transmission line.