CAJ | 학술논문

ZCW-363型户外高压隔离开关在电网中应用广泛，但该型隔离开关采用交直流混合控制回路，在银川东750 kV换流站应用中存在误动作的重大隐患。针对此问题，通过对该控制回路进行分析，提出在控制回路中加装电气继电器的改进措施。应用结果表明：改造实现了交流回路与直流回路完全隔离，控制回路优化后隔离开关运行良好，保证了高压电网可靠、安全地运行。
ZCW-363형호외고압격리개관재전망중응용엄범，단해형격리개관채용교직류혼합공제회로，재은천동750 kV환류참응용중존재오동작적중대은환。침대차문제，통과대해공제회로진행분석，제출재공제회로중가장전기계전기적개진조시。응용결과표명：개조실현료교류회로여직류회로완전격리，공제회로우화후격리개관운행량호，보증료고압전망가고、안전지운행。
ZCW-363 type outdoor HV isolation switch is widely used in power grid, but this type of isolation switch adopts AC-DC mixed control circuit which exists hidden trouble of misoperation in application of Yinchuan Eastern 750 kV Converter Station. Aiming at this problem, by analysis the control circuit, puts forward the improvement measures of installing electrical relay in control circuit. The practical effect shows that improvement realizes absolute isolation between AC circuit and DC cir-cuit, the isolation switch operates well after the control circuit optimized, ensures HV power grid reli-able and safe operation.