1. 华北电力大学电气与电子工程学院, 河北省保定市 071003;2. 电网安全与节能国家重点实验室(中国电力科学研究院有限公司), 北京市 100192
1. School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China;2. State Key Laboratory of Power Grid Safety and Energy Conservation (China Electric Power Research Institute), Beijing 100192, China
Aiming at the restoration problem of asynchronous receiving end power grid, a partition method for system restoration is proposed, which considers the structure characteristics of network community and the interaction between AC and DC system. Firstly, on the basis of analyzing the interaction, the system strength indices are added to the partition principle and constraints, and the optimal transmission power of each line commutated converter based high voltage direct current(LCC-HVDC)system is obtained by solving the corresponding optimization model. Then, a partition model is proposed for the asynchronous receiving end power system restoration. Secondly, by taking the comprehensive influence on the bus short-circuit capacity of each HVDC dropping location as the weight, the weighted edge betweenness of branch circuit is defined. The partition number can be automatically determined according to the partition constraints and the number of black start sources. An improved GN splitting algorithm is then used to realize the reasonable partition of the multi-infeed HVDC receiving end power grid. Based on the partition results, the restoration time and load restoration capacity are calculated. Finally, the partition results of the IEEE 39-bus system and a local power grid in a southern province of China verify the feasibility and effectiveness of the proposed method.
YANG Chao, LIANG Haiping, GU Xueping,et al.Partition Method for Restoration of Asynchronous Receiving End Power Grid with Multi-infeed HVDC[J].Automation of Electric Power Systems,2019,43(10):162-170. DOI:10.7500/AEPS20180604011.