CAJ | 학술논문

晶闸管控制电抗器（TCR）是静止无功补偿器（SVC）的重要组成部分,是SVC安全稳定运行的重要保证。文中根据实际TCR装置的安装及接线方式,详细给出了其运行时的各种故障态,包括引线间短路、接地短路及相控电抗器匝间短路。将直流系统的准稳态模型引入TCR装置建模,在此基础上将任意周期电流表达式推广到三相系统中,得到了TCR装置正常运行时线电流中无3次谐波,内部故障时线电流中存在3次谐波的正序及负序分量的结论。引入非特征3次谐波概念,并对TCR装置在各种故障态下存在的非特征3次谐波进行了定性及定量分析。PSCAD数字仿真结果证明了TCR装置的运行特性及故障态非特征3次谐波计算方法正确。
정갑관공제전항기（TCR）시정지무공보상기（SVC）적중요조성부분,시SVC안전은정운행적중요보증。문중근거실제TCR장치적안장급접선방식,상세급출료기운행시적각충고장태,포괄인선간단로、접지단로급상공전항기잡간단로。장직류계통적준은태모형인입TCR장치건모,재차기출상장임의주기전류표체식추엄도삼상계통중,득도료TCR장치정상운행시선전류중무3차해파,내부고장시선전류중존재3차해파적정서급부서분량적결론。인입비특정3차해파개념,병대TCR장치재각충고장태하존재적비특정3차해파진행료정성급정량분석。PSCAD수자방진결과증명료TCR장치적운행특성급고장태비특정3차해파계산방법정학。
Thyristor controlled reactors（TCR） are critical components of static var compensators（SVCs） to ensure the safe and stable operation of SVCs.Comprehensive analysis of fault states of a TCR is given in detail.This includes line to line fault,phase to ground fault and turn to turn fault.TCRs are modeled based on the quasi-steady-state model used in HVDC and extended arbitrarily periodical current to three-phase system.The study shows that the line current of a TCR doesn＇t contain the third harmonics in the normal condition;however,it does contain positive and negative components of the third harmonics in the fault state.Non-characteristic third harmonic current is introduced and studied qualitatively as well as quantitatively.Numerical simulations using PSCAD validate correctness of the proposed method.