CAJ | 학술논문

介绍了统一潮流控制器（UPFC）的工作原理,分析了故障状态下UPFC对测量阻抗的影响,提出了接地短路的自适应保护和相间短路的自适应保护两种自适应解决方案,并进行了试验验证。结果表明两种方案在短路故障后均能使保护正确动作,克服了在含UPFC装置的后端线路发生故障时传统的距离保护可能拒动的影响,使得距离保护能正确反映各短路故障。
개소료통일조류공제기（UPFC）적공작원리,분석료고장상태하UPFC대측량조항적영향,제출료접지단로적자괄응보호화상간단로적자괄응보호량충자괄응해결방안,병진행료시험험증。결과표명량충방안재단로고장후균능사보호정학동작,극복료재함UPFC장치적후단선로발생고장시전통적거리보호가능거동적영향,사득거리보호능정학반영각단로고장。
Introduction was made to the working principle of unified power flow controller（UPFC）.Analysis was made to the impacts on impedance measurement of UPFC under fault state.This paper raised adaptive protection of grounding short circuit and adaptive protection between phases,test and verification carried out.The result shows that the two plans both can make protection in action correctly after short circuit faults and overcome shortcomings that the traditional distance protection may refuse to act when the end line with UPFC device went wrong,which made distance protection reflect various short circuit correctly.