快速分解连续潮流算法的改进及应用  

Improvement and Application of Fast-Decoupled Continuous Power Flow Algorithm

作　　者：王奇[1] 刘明波[1] 李妍红[2] 

机构地区：[1]华南理工大学电力学院,广东广州510640 [2]广东电网公司广州供电局变电二部,广东广州510180

出　　处：《华南理工大学学报（自然科学版）》2008年第6期138-144,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50277013)

摘　　要：提出了完整雅可比矩阵和快速分解连续潮流法相结合的连续潮流算法.该方法在切向量求取环节,采用完整的雅可比矩阵做系数矩阵求取切向量,从而保证了切向量的准确性;在初始潮流计算和校正环节采用快速分解法进行求解.通过与牛顿连续潮流法的对比,发现改进后的算法能够更快速又不失准确地追踪P-V曲线.此外,该方法还考虑了平衡发电机功率限制,便于分析发电机功率限制对系统稳定裕度、崩溃点电压水平及其分岔类型的影响.最后通过对IEEE 118节点系统和1416节点系统的仿真,验证了所提算法的准确性和高效性.This paper proposes an improved continuous power flow （CPF） algorithm by combining the complete Jacobian matrix and the fast-decoupled continuous power flow （FDCPF）. In the algorithm, the tangent vector is calculated by taking the complete Jacobian matrix as the coefficient matrix, thus improving the accuracy of the tangent vector. Moreover, the FDCPF is applied to the calculation of initial power flow and the correction steps. As compared with the Newton-based CPF method, the proposed algorithm tracks the P- V curve more rapidly and with higher accuracy, and conveniently considers the power limit of the slack generator, which helps to analyze the effects of the power limit on the stability margin, the voltage profiles at the collapse point and the bifurcation type. Numerical simulation is finally performed on IEEE 118-bus and 1416-bus systems to reveal the correctness and effectiveness of the proposed algorithm.

关 键 词：连续潮流 快速分解法 发电机 功率限制 分岔类型 

分 类 号：TM72[电气工程—电力系统及自动化]