电网技术
電網技術
전망기술
Power System Technology
2015年
11期
3273-3279
,共7页
雷洋%田翠华%魏亮亮%罗旋瑶%袁佳歆%陈柏超%赵庆源%徐志达
雷洋%田翠華%魏亮亮%囉鏇瑤%袁佳歆%陳柏超%趙慶源%徐誌達
뢰양%전취화%위량량%라선요%원가흠%진백초%조경원%서지체
故障限流器%风电场%故障穿越%临界稳定阻抗
故障限流器%風電場%故障穿越%臨界穩定阻抗
고장한류기%풍전장%고장천월%림계은정조항
fault current limiter%wind parks%fault ride-through%critical impedance
针对风电场的故障穿越(fault ride-through,FRT)问题,研究了不同限流阻抗下电阻型故障限流器(resistive-type fault current limiter,RFCL)和电抗型故障限流器(reactor- typefault current limiters,LFCL)对风电场FRT能力的改善作用,提出了一种计算风电场保持稳定所需最小限流阻抗的方法,并定义为临界稳定阻抗,并在考虑限流能力和故障持续时间的条件下,比较了RFCL和LFCL的稳定阻抗及对风机故障穿越能力的改善效果。结果表明:FCL 能够减小故障电流、抑制电压跌落,其对风机 FRT 的改善效果与限流阻抗密切相关;RFCL在限流阻抗取值方面具有优势;临界稳定阻抗下LFCL对FRT的提升效果表现更好。
針對風電場的故障穿越(fault ride-through,FRT)問題,研究瞭不同限流阻抗下電阻型故障限流器(resistive-type fault current limiter,RFCL)和電抗型故障限流器(reactor- typefault current limiters,LFCL)對風電場FRT能力的改善作用,提齣瞭一種計算風電場保持穩定所需最小限流阻抗的方法,併定義為臨界穩定阻抗,併在攷慮限流能力和故障持續時間的條件下,比較瞭RFCL和LFCL的穩定阻抗及對風機故障穿越能力的改善效果。結果錶明:FCL 能夠減小故障電流、抑製電壓跌落,其對風機 FRT 的改善效果與限流阻抗密切相關;RFCL在限流阻抗取值方麵具有優勢;臨界穩定阻抗下LFCL對FRT的提升效果錶現更好。
침대풍전장적고장천월(fault ride-through,FRT)문제,연구료불동한류조항하전조형고장한류기(resistive-type fault current limiter,RFCL)화전항형고장한류기(reactor- typefault current limiters,LFCL)대풍전장FRT능력적개선작용,제출료일충계산풍전장보지은정소수최소한류조항적방법,병정의위림계은정조항,병재고필한류능력화고장지속시간적조건하,비교료RFCL화LFCL적은정조항급대풍궤고장천월능력적개선효과。결과표명:FCL 능구감소고장전류、억제전압질락,기대풍궤 FRT 적개선효과여한류조항밀절상관;RFCL재한류조항취치방면구유우세;림계은정조항하LFCL대FRT적제승효과표현경호。
In allusion to fault ride-through (FRT) capacity of wind parks, this paper presents a method using fault current limiter (FCL) to improve FRT capacity of wind parks under three phase fault. The analysis compared performances of resistive-type fault current limiters (RFCL) and reactor-type fault current limiters (LFCL) with different impedance in FRT capacity enhancement. The minimum impedance value required for maintaining stable operation of FSWT during fault is determined, as well as dynamic stable speed and critical clearing time (CCT). The method is validated with detailed transient studies in a simple wind park. All the models are developed in PSCAD/EMTDC dynamic simulation. Simulation results show that enhancement of FRT is related highly with the impedance of FCL. RFCL has advantage in limiting impedance choosing and transient oscillation, while LFCL with critical impedance has a better performance in FRT enhancement.