低压电力系统配电母线N级联锁的算法

N-Level Interlock Arithmetic for Electric Distribution Generatrix of Low Pressure Electric System

在电力系统中 ,由于开关容量及运行方式限制 ,通常在低压系统中多采用 1段母线、1台变压器运行方式。为了避免这种运行方式在母线检修、故障时可能造成停电的缺点 ,因此可用断路器将单母线分段。母线经断路器分段后 ,对重要用户可以从不同段引出两个回路 ,有两个电源供电。母线分段的数目 ,可以根据电源数目和容量来分 ,段数越多 ,停电的范围越小 ,所需电气设备越多 ,一般以 4～ 6段为宜。本文对此配电母线进行N级联锁推导其算法 。

In electric system, conventionally it is adopted that a generatrix is connected with a transformer in low pressure system due to limitation of the capacity of switch and operation mode. In order to avoid power cut during examining and repairing of generatrix or conk out of this operation mode, breaker can be used to separate mono generatrix. If generatrix is separated by breaker, two circuits can be diverted from different segments, thus can provide two power sources for important user. The number and the capacity of power sources decide the segments number. The more the number, the smaller the area of power cut, while the more electric equipments are needed. Usually, there are 4-6 segments in one generatrix. N level interlocking arithmetic of electric distribution generatrix is derived in this paper in order to solve the problem of multiple levels of interlocking in the future.