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SEL-321̬붯̬Լ鷽

ʱ䣺2018-01-20 ҵ ҪͶ
ժҪڵԹжԲø迹ԪıװýԲʱӦעSEL-321Ϊ˾̬Լ̬Է֮Ĺϵ

Schweitzer(SEL)΢·˴ĸ迹Ԫ(ĸ迹Ԫף12ݼSELṩSEL-321/321-1ֲָ)ڸ迹ƽԳƹʱʵʲ迹Z2=U2/I2(ʽU2I2ֱΪ̵Ĺϵѹĸ)ĵz2=Z2Fb(ʽz2Ϊ迹·迹ǷͶӰZ2FbΪSEL̵ݲͬZ2ֵ)²ʱ(z2Z2Fb)бΪz2=Z2Rb(ʽZ2RbΪSEL̵ݲͬZ2ķֵ)ϲʱ(z2Z2Rb)бΪָԪֵͶװеʵϵͳ迹йڶԲָԪıм̵ʱӦע鷽ü鴫ͳ̵鷽ܻܿһЩ

1̬Ե鷽

SEL-321΢·估ӵؾ͹϶λĹԲƽķԪ˴ĸԪķ迹Ԫ븺ԪǽһڶԸñԪԽвʱòһ㷽迹Եķעĵѹķֵλװʵϵͳʱ̫ԶͿɾԪھضֵĸԪû𶯶ʹ޷

ijվۺԶϵͳ110kV·SEL-321·ȫΪ3.8kmϵͳ򻯵ͼͼ1ʾ

ͼGRΪԲϵͳԴGSΪ󷽾110kV/35kVѹӵ1СˮΪ34ĸԪֵΪZ2ֵZ2F=-12.5Z2ֵZ2R=0.5Ϊ1ζֵZzd1=0.072ζֵZzd2=0.333ζֵZzd3=2.8·迹?L=70迹Բͼ2ʾ110kV·SEL-321迹ԲMHO

迹Զ迹ƽϷֱʽʾ迹Բɸ迹ֵZzd迹ԲĴ
б߽Բ

ʽСU迹̵ĸߵѹ
Zzd迹̵迹ֵ
I迹̵ĵ
U-Zzd.I迹̵ѹ
Zf迹̵Ĺ迹

OMICRONCMC-156̵CMC-156ṩ迹ƽ϶ԾԵ2ֻһǺ㶨һǺ㶨Դ迹

迹ԲԪԵIJһɲú㶨ģL2-L3·迹Բ߽(൱迹Բ߽總ÿһǶֵ)ֲԷģ·ǰΪ״̬ϲԵĶ·Сһ(ΪԵItestIL2=IL3=Itest)ϵѹ(L2L3ѹUL2-L3)λΪ-90(L1ѹUL1λΪ0)L2L3λIL2IL3ɹ迹Zf迹ǦȾIL2=-90-IL3=90 ϵѹUL2-L3ĴСɶ·迹ZfĴСȷUL2-L3=2.ItestZf

ú㶨̶Itest=3.0ASEL-321迹ԲԵõĽǣ·迹迹迹Բ(·迹?L)ʱ迹Բı߽ͼ2붯迹ԲϺǺ·迹迹ƫʱԤڵIJ迹Բ߽޷·迹Zf=2.3540㦸·Ӧڵ3迹ԲZf=0.210㦸ʱ
SEL-321̬붯̬Լ鷽Ƽ
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