广东电力
廣東電力
엄동전력
GUANGDONG ELECTRIC POWER
2014年
12期
30-34
,共5页
反时限过电流保护%分布式电源%配电网%动作时限%接入容量
反時限過電流保護%分佈式電源%配電網%動作時限%接入容量
반시한과전류보호%분포식전원%배전망%동작시한%접입용량
inverse-time over-current protection%distributed power source%power distribution network%action limit%access capacity
考虑分布式电源的接入位置和接入容量，以10 kV配电网为例建立含分布式电源的配电网短路电流计算模型，以定量分析分布式电源接入对配电网反时限过电流保护及对短路电流的影响。分析的结果是分布式电源接入将增大上游保护对下游线路故障的动作时限，且当分布式电源接入容量超出一定容量时将引发反时限保护的拒动。该结论对含分布式电源配电网的反时限过电流保护启动电流的整定、允许分布式电源接入容量的选取提供了理论参考。
攷慮分佈式電源的接入位置和接入容量，以10 kV配電網為例建立含分佈式電源的配電網短路電流計算模型，以定量分析分佈式電源接入對配電網反時限過電流保護及對短路電流的影響。分析的結果是分佈式電源接入將增大上遊保護對下遊線路故障的動作時限，且噹分佈式電源接入容量超齣一定容量時將引髮反時限保護的拒動。該結論對含分佈式電源配電網的反時限過電流保護啟動電流的整定、允許分佈式電源接入容量的選取提供瞭理論參攷。
고필분포식전원적접입위치화접입용량，이10 kV배전망위례건립함분포식전원적배전망단로전류계산모형，이정량분석분포식전원접입대배전망반시한과전류보호급대단로전류적영향。분석적결과시분포식전원접입장증대상유보호대하유선로고장적동작시한，차당분포식전원접입용량초출일정용량시장인발반시한보호적거동。해결론대함분포식전원배전망적반시한과전류보호계동전류적정정、윤허분포식전원접입용량적선취제공료이론삼고。
Considering of connecting position and access capacity of distributed power source and taking 1 0 kV power distri-bution network as an example,calculation model for short-circuit current of the power distribution network with distributed power source was established. Quantitative analysis was used for studying impact on inverse-time over-current protection and short-circuit current of the power distribution network after connecting distributed power source. Analysis results indicated that accessing of distributed power source might increase action limit of upstream protection on downstream lines fault and when access capacity of distributed power source exceeded a certain capacity,it might cause refusal to action of inverse-time protection. The conclusion might provide theoretical references for starting up current setting by inverse-time over-current protection of the power distribution network with distributed power source and allowing selection on access capacity of dis-tributed power source.
