Research on Adjustment Method of Power Flow Convergence Based on Planning Model

2018 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

材料科学;无线电电子学;计算机科学

Chen, Hanwen^1 ; Zheng, Hua^1 ; Li, Hui^2 ; Wang, Zhidong^2 ; Wang, Jiaming^2 ; Kuai, Shengyu^3

North China Electric Power University, Beijing, China^1

State Grid Economic and Technology Research Institute Co., Ltd, Beijing, China^2

State Grid Anhui Electric Power Co., Ltd, Hefei, China^3

关键词: Conventional power;    Convergence problems;    Electrical distance;    Implementation steps;    Nonlinear programming model;    Power flow calculations;    Power flow equations;    Power network planning;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/439/3/032108/pdf
DOI  :  10.1088/1757-899X/439/3/032108

来源: IOP

【 摘 要 】

Power flow calculation is an essential component of power network planning. The problem of its convergence adjustment has a great significance for research. This paper proposes a power flow convergence adjustment method based on a nonlinear programming model. It aims at the non-convergence problem of power flow calculation caused by reactive power imbalance. By introducing a set of slack variables into the AC/DC power flow equations, the conventional power flow calculation is converted to a nonlinear programming model with the least square sum of slack value. Based on the characteristics of node slack value and its distribution law, the power flow reactive power adjustment method and its implementation steps are established, according to the electrical distance. The actual grid planning data of a certain place in China is simulated and calculated, which verifies the effectiveness and feasibility of the method.