按单相短路保护灵敏度确定低压配电距离  

Determination of Low Voltage Line Distribution Distance by means of Single Phase Short-circuit Protection Sensitivity

作　　者：雍静[1] 

机构地区：[1]重庆建筑大学,400045

出　　处：《建筑电气》2000年第2期3-8,共6页Building Electricity

摘　　要：通过分析和计算得出:在单级配电的情况下,配电线路若能满足单相短路保护灵敏度条件则一定满足电压损失条件;在二级配电的情况下,大多数仍满足上述关系。文中还提出了低压系统中只用正序阻抗表达的单相短路电流的简化计算公式。According to analysis ari calulalion, to distribution distance of single stage line, loss of v Jtage is satisfied if single phase short-circuit protection sensitivity is satisfied; to distribution distance of two stages line, in most conditior 3, above conclusion is right. In the paper, the reduced single phase short-circuit current equation expressing as positive sequence impi dance only is showed.

关 键 词：单相短路 灵敏度 电压损失 配电距离 配电系统 

分 类 号：TU852[建筑科学]