《控制方式转换策略下的改进交直流系统潮流算法》.pdf

第 35 卷 第 8 期 电 网 技 术 Vol. 35 No. 8 2011 年 8 月 Power System Technology Aug. 2011 文章编号：1000-3673 （2011 ）08-0093-06 中图分类号：TM 72 文献标志码：A 学科代码：470·40 控制方式转换策略下的改进交直流系统潮流算法 1 2 2 陈厚合 ，李国庆 ，姜涛 （1．华北电力大学 电气与电子工程学院，北京市 昌平区 102206 ； 2．东北电力大学 电气工程学院，吉林省 吉林市 132012 ） A Modified Power Flow Algorithm for AC/DC Power System Under Transformation Strategy of Converter Control Modes 1 2 2 CHEN Houhe , LI Guoqing , JIANG Tao (1.School of Electrical and Electronic Engineering, North China Electric Power University, Changping District, Beijing 102206, China; 2. School of Electrical Engineering, Northeast China Dianli University, Jilin 132012, Jilin Province, China) ABSTRACT: The transformation strategy among converter 0 引言 control modes is analyzed. Considering the interaction effects 目前交直流系统的潮流算法根据迭代方法的 between AC and DC system under different converter control modes, a new power flow algorithm that can suitable for the 不同主要分为 2 类：同时求解法[1-3]和顺序求解 transformation strategy of converter control modes is proposed. 法[4-5]，也可称为联合求解法和交替求解法。同时求 Based on the sequential solution, the elements of special nodes 解法对交直流输电系统约束方程联立求解。算法具 in Jacobian matrix of AC system are effectively modified; in 有与原交流系统潮流计算相近的收敛性和计算效 the transformation strategy based on converter control modes 率。顺序求解法将交流系统方程和直流系统方程交 the key state variables of converter are reasonably chosen and 替迭代求解。该方法能够充分利用原有的交流潮流 the produc