基于P-Q分解的潮流计算的算法改进与应用研究  

On Algorithm Improvement and Application of Power Flow Computing Based on P-Q Decomposition

作　　者：朱聪 谢东 ZHU Cong;XIE Dong(College of Electrical Engineering,Tongling University,Tongling Anhui 244000,China)

机构地区：[1]铜陵学院电气工程学院,安徽铜陵244000

出　　处：《萍乡学院学报》2019年第6期25-28,共4页Journal of Pingxiang University

基　　金：铜陵学院大学生创新创业训练计划项目(tlxy201810383243);铜陵学院校级质量工程项目(2017xj065)。

摘　　要：针对牛顿-拉夫逊法在潮流计算中的缺点,提出了基于P-Q分解的潮流计算的改进算法。首先介绍了基于P-Q分解的潮流计算原理,在此基础上,详细阐述了该改进算法在求取PV曲线中的应用方法。所提出的改进算法通过公式化简实现了节点有功功率与无功功率的解耦迭代,使潮流运算的速度有了明显提高。MATLAB仿真的结果表明,基于P-Q分解的潮流计算的改进算法能够正确绘制出完整的PV曲线,且运算速度与牛顿-拉夫逊法相比有明显提高。In view of the shortcomings of Newton-Raphson method in power flow calculation, an improved power flow algorithm based on P-Q decomposition is proposed. Firstly, the principle of power flow calculation based on P-Q decomposition is introduced. On this basis, the application method of the improved algorithm in PV curve calculation is described in detail. This improved algorithm realizes decoupling iteration of active power and reactive power of nodes by simplifying formulas, which greatly improves the speed of power flow calculation. The results of MATLAB simulation show that the improved power flow algorithm based on P-Q decomposition can draw the complete PV curve correctly, and the calculation speed is significantly improved compared with the Newton-Raphson method.

关 键 词：潮流计算 P-Q分解 牛顿-拉夫逊法 PV曲线 

分 类 号：TM744[电气工程—电力系统及自动化]