使用线路自动重合闸的意义
时间: 2022-11-12 15:56:18 浏览(lan)次数(shu):154
使用线路自动重合闸的意义 线路断路器采用自动重合闸,是电网安全和经济运行的需要。自动重合闸的作用是不仅在于恢复因故障断开的线路,在连续故障下保持电网的完整性,避免扩大事故的重要手段。架空线路绝大多数是单相瞬时性故障,相间故障和永久性故障所占比例很小。当线路

      使用线路自动重合闸的意义


      线路断(duan)(duan)路器(qi)采用自动(dong)重(zhong)合(he)(he)闸,是电(dian)(dian)(dian)(dian)网(wang)安全和(he)经(jing)济(ji)运(yun)行的(de)(de)需要。自动(dong)重(zhong)合(he)(he)闸的(de)(de)作(zuo)(zuo)(zuo)用是不(bu)仅在于恢(hui)复(fu)(fu)(fu)因故(gu)(gu)(gu)障(zhang)断(duan)(duan)开的(de)(de)线路,在连续故(gu)(gu)(gu)障(zhang)下保持(chi)电(dian)(dian)(dian)(dian)网(wang)的(de)(de)完整性(xing)(xing),避免扩(kuo)大事故(gu)(gu)(gu)的(de)(de)重(zhong)要手(shou)段。架空线路绝大多(duo)数是单(dan)相瞬时性(xing)(xing)故(gu)(gu)(gu)障(zhang),相间故(gu)(gu)(gu)障(zhang)和(he)永久(jiu)性(xing)(xing)故(gu)(gu)(gu)障(zhang)所占比例(li)很小。当线路故(gu)(gu)(gu)障(zhang)继电(dian)(dian)(dian)(dian)保护动(dong)作(zuo)(zuo)(zuo)跳闸之后,大多(duo)数线路故(gu)(gu)(gu)障(zhang)点电(dian)(dian)(dian)(dian)弧将自动(dong)熄灭,只(zhi)有500kV线路靠并联(lian)电(dian)(dian)(dian)(dian)抗器(qi)中(zhong)点小电(dian)(dian)(dian)(dian)抗帮助(zhu)消弧,重(zhong)合(he)(he)闸动(dong)作(zuo)(zuo)(zuo)将断(duan)(duan)路器(qi)重(zhong)合(he)(he)成功,恢(hui)复(fu)(fu)(fu)线路正(zheng)常(chang)运(yun)行,不(bu)仅恢(hui)复(fu)(fu)(fu)了输电(dian)(dian)(dian)(dian)线路继续运(yun)行的(de)(de)完整性(xing)(xing),减少了停电(dian)(dian)(dian)(dian)损失,更(geng)为重(zhong)要的(de)(de)是增大了超高(gao)压线路的(de)(de)送电(dian)(dian)(dian)(dian)容量(liang),提(ti)高(gao)了电(dian)(dian)(dian)(dian)网(wang)的(de)(de)暂(zan)态稳定水平。

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