一种舰船电力系统电压稳定边界计算方法研究

A computational method for voltage stability analysis of ship power systems

随着舰船电力系统容量的不断增大,系统的稳定运行点越来越接近其静态电压稳定边界。建立基于连续潮流方法的舰船电力系统模型,并对舰船电力系统的静态电压稳定性进行分析,提出能够在给定的发电及负荷增长方向上计算静态电压稳定边界的方法。所提出方法应用在一个13节点舰船电力系统中,分析结果表明常规舰船电力系统的稳定运行点远离其静态电压稳定边界,但随着系统传输容量的增大,会导致其逐步逼近这一边界,最终导致系统失稳。

Since the capacity of ship power systems increases and becomes bigger and bigger,the stable operational point is closer to the static voltage stability margin than ever. A model of ship power systems based on the continuation power flow method is established and used to analysis voltage stability. A method of calculating the margin of voltage stability due to the variation of generation and load is proposed and a detailed flowchart of the method is given in this paper. The proposed method is applied to a sample 13- bus ship power system. The test shows that the margin of voltage stability lies in ship power systems though the current operational point is far away from this margin. With the development of the capacity,ship power systems encounter the margin of static voltage stability eventually and become unstable.