煤矿环式供电网络的功率分布

煤矿供电系统多采用环式电网,其运行方式有两种:第一种运行方式为负荷从环式电网某一侧回路受电,另一侧回路处于备用状态;第二种运行方式为整个环网闭合,负荷从两个方向受电。后一种运行方式,电网内部的功率流动情况比较复杂,计算电网的电压降和功率损耗时,相对于辐射式电网要困难些。环式电网的求解一般可直接采用回路电流法,但需要进行繁琐的运算。通过计算环式电网中的功率分布,来计算电路中的电压降和功率损耗,对于现场电气工程计算具有一定的现实意义。

Power Distribution of Loop Power Supply Network in Coal Mines

The loop power networks are often used in power supply system in coal mines,which have two running modes: the first is that one circuit of the networks accepts the power and another circuit will be in backup condition;the second is that the whole networks will be in closing condition and accept the power from two directions.The inner power situation of the networks is more complex in the latter mode;the calculation of its electric voltage fall and power loss is more difficult as well compared to the radiating networks.The solve of the loop power networks can be got directly through circuit current method,but the complex calculation are also needed.It is practical in electric engineering computation to calculate the electric voltage fall and power loss through calculating the power distribution of the loop power networks.