实现低压电网选择性保护的一种措施-南昌航空大学期刊网.PDF

75 ( , 330063) [ ] ; ; [ ] DW 1015 , , , , , , , [ ] TM 77 [ ] A [] 100 1- 4926( 2009) 04 - 0075- 07 A Selecti ve P rotecti on M ethod of Low - voltage Power System W U J ia- ju, Q IU Yu- an, Y I H ong (N anchang H angkong University, N anchang, J iangx i 330063, Ch ina) K ey w ord s: overr ide tr ip; step action; mi prov ing m e thods A bstrac t: DW 10, 15 series automa tic a ir sw itch w as app ied w ith the ow - vo tage fu se in ow - vo tage distr ibution system. W hen short c ircuit o ccurred in one feedback branch, eapfrog tr ip w ou d happen in the sy stem and the pow e r cu t f ie d w ou d spread. Becau se there w as a cooperation prob em betw een the ac tion tmi e of the transfo rm er sw itch second y and the m e ting tmi e o f the fu se. T his paper ana yzed the reason o f the eap frog tr ip, and presented the mi proved m e thod w hich w as ca rr ied into execution and reach good effect. T he re evant step s w ere in troduced in deta i w hich prov ided reference for the mi prov ing o f the ow - vo tage distr ibution equipment per- form ance. , , , , , , , , , , , , 1 2 , , , , [ ] 2009- 09 - 14 [ ] 2009- 10 - 20 [ ]伍家驹( 195 1- ) , 男, 南昌航空大学无损检测技术教育部重点实验室教授, 日本国立福井大学 学博士主要研究方向: 电 力电子技术 76 2009 12 23 4 D , I 1 D 1 ZK1 , , D2 , I I ZK D 1 D 2 1 ZK , ZK 2 1 ZK2 , ZK2 , ZK2 ZK1 , D I ( I I I ), 3 D3 D3 D 2