基于潮流迭代的配电网线损计算

Line loss calculation of distribution network based on power flow iteration

在辐射状配电网线损计算中,潮流迭代计算过程所占用时间最多.考虑了配电网典型的日负荷曲线形状,通过改变潮流计算中的收敛精度和迭代次数,计算不同功率因数和有功负荷不同比例下配电网的线损,并记录其计算时间及迭代次数.比较不同影响因素下的线损计算结果,得出通过对潮流迭代过程的合理简化,不但能保持线损计算精度,也可有效地提高线损的计算速度的结论.

In the theoretical line loss calculation of a radial distribution network, the power flow iteration process occupies most of time. A typical daily load curve shape of the distribution network is considered, the flow calculation accuracy and convergence of iterations are changed in this paper. The distribution net- work line loss is calculated under different load power factors and active power in different proportions; and the computation time and the numbers of iterations are recorded. By comparing line loss calculation re- sults under different factors, it can be obtained that through reasonable simplification of power flow com- putation, not only maintains the line loss calculation accuracy but also the speed of calculating line loss can be effectively improved.