水电与新能源
水電與新能源
수전여신능원
HYDROPOWER AND NEW ENERGY
2015年
4期
54-55
,共2页
增量差动保护%越级动作%技改措施%定值%达岱水电站
增量差動保護%越級動作%技改措施%定值%達岱水電站
증량차동보호%월급동작%기개조시%정치%체대수전참
incremental differential protection%overstep tripping%technical innovation measures%setting%Tatay Hydro-power Station
分析了柬埔寨达岱水电站主变压器差动保护越级动作的原因，针对存在的问题提出了将厂高变高压侧电流接入主变差动保护、调整厂用10 kV馈线保护定值和厂高变过流保护定值的完整技改措施，对有同类安全隐患的电站有很好的参考价值。
分析瞭柬埔寨達岱水電站主變壓器差動保護越級動作的原因，針對存在的問題提齣瞭將廠高變高壓側電流接入主變差動保護、調整廠用10 kV饋線保護定值和廠高變過流保護定值的完整技改措施，對有同類安全隱患的電站有很好的參攷價值。
분석료간포채체대수전참주변압기차동보호월급동작적원인，침대존재적문제제출료장엄고변고압측전류접입주변차동보호、조정엄용10 kV궤선보호정치화엄고변과류보호정치적완정기개조시，대유동류안전은환적전참유흔호적삼고개치。
In the Tatay Hydropower Station of Cambodia , overstep tripping of the differential protection in the main transformer is observed .Possible reasons of this fault is analyzed .Corresponding treatment measures are then proposed , such as the connection of the high-voltage current of the station high-voltage transformer to the differential protection of the main transformer , and the setting adjustment of the 10 kV feeder line protection and the over-current protection of the station high-voltage transformer .It could be a useful reference for hydropower stations with similar problems .
