AC/DC power flow computation based on improved levenberg-marquardt method

作者：Cao, Jia^*; Yan, Zheng; Fan, Xiang; Xu, Xiaoyuan; Li, Jianhua; Cao, Lu

来源：International Journal of Emerging Electric Power Systems, 2015, 16(1): 1-13.

DOI：10.1515/ijeeps-2014-0121

• Adaptive damping
• Ill-conditioning
• Least-square solution
• Levenberg
• Marquardt methods
• Levenberg-Marquardt
• Power flow calculations
• Power flow computation
• Power flows

Under the case of ill-conditioning system, this paper is concerned with the AC/DC power flow calculation. The improved Levenberg-Marquardt (ILM) method with adaptive damping factor selection is applied to solve the AC/DC power flow problem. The main purpose of this paper is as follows: one is to provide comparison reference between Newton method, classical LM method (CLM) and ILM method under the well-conditioning system;the other is to research what is the maximal load withstood by power system, under the case of ill-conditioning. Finally, those methods are tested on the 22-bus, the IEEE 118-bus AC/DC system, respectively. Numerical results indicate that the ILM method has the advantage of fast convergent speed. When expanding loads in a certain extent, ILM method can at least find least square solutions, whereas Newton method and CLM method would divergent, and the convergent property of Newton method can be improved by taking some measurements using the information of a least square solution obtained by ILM method.

• 出版日期2015
• 单位上海交通大学