混合电网的交直流解耦潮流算法  

An AC/DC Decoupled Hybrid Power Flow Algorithm for Hybrid Power System

作　　者：吴志远[1] 殷正刚[1] 唐西胜[1] 

机构地区：[1]中国科学院电工研究所,北京市海淀区100190

出　　处：《中国电机工程学报》2016年第4期937-944,共8页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2014AA 052002);国家电网公司项目(SGSHJY00BGJS1400221)~~

摘　　要：潮流计算是电力系统分析的基础,基于交替迭代的混合潮流计算,便于灵活处理换流器的各种控制方式,而且对交流子系统的计算,可以直接利用成熟的交流潮流计算方法。但是,该类算法需要分别迭代求解交、直流潮流,并且需要交替进行多次。文中分析了该类算法的迭代过程需要多次交替进行的原因,提出一种适用于电压源换流器(voltage source converter,VSC)型混合电网的交、直流解耦潮流算法,该算法通过调整交、直流子系统的划分界限以及VSC的有功控制参量,避免了迭代的多次交替,从而使混合潮流的计算量大为减少。通过算例验证了新算法的有效性,以及在处理直流电压控制方式上的优势。Power flow calculation is the basis for power system analysis, in which alternating iterative power flow can handle the various control strategies of the converter and make use of the mature AC power flow method. However, the AC and DC power flow are calculated independently in this algorithm by an iterative method, and this process will continue alternately many times. This paper analyzed the reasons for repeated alternating, and proposed an AC/DC decoupled hybrid power flow algorithm for hybrid power system containing voltage source converter （VSC）. It can avoid the repeated alternation process and reduce the total calculation amount by adjusting VSC＇s control parameter and the dividing line between AC and DC subsystems. Case studies verified the effectiveness of the proposed method and its advantage in handing DC voltage control

关 键 词：混合潮流计算 混合配电网 电压源换流器 U-P下垂控制 定雅可比矩阵 交直流解耦算法 

分 类 号：TM71[电气工程—电力系统及自动化]