摘要
计算多级电网短路电流需要进行不同电压等级的折算,通常采用相对值法,要取基准容量、基准电压,求各级基准电流及短路回路各元件的相对基准阻抗,在求出短路电流的相对值后,还须再换算成各级短路电流的绝对值,其步骤之多、公式之繁都给计算带来一定的困难。为在复杂电网中计算中找出一种简单易行的方法,在研究了绝对值法和相对值法的基础上,将它命名为准折算值法。
Requiring the conversion between different voltage levels for the computation of the short-circuit current at multi-level power grid, the relative value method is used to be adopted by taking the baseline value of capacity, voltage to calculate the current reference and the relative baseline impedance of each components of short-circuit loop. The relative value of short-circuit current to be worked out needs to be further converted into each levels short-circuit currents in absolute terms. Too many steps and complicated calculation formula of the method have been brought out certain difficulties. A simple and easy method in the calculation of complex grid is carried out based on method. studying the relative value method and the absolute value method, and named quasi-converted value
出处
《煤矿机电》
2009年第5期72-74,共3页
Colliery Mechanical & Electrical Technology
关键词
复杂电网
短路电流计算
准折算值
complex power grid
short-circuit current calculation
quasi-converted value
