Brief analysis of Jiangsu grid security and stability based on multi-infeed DC index in power system

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Zhang, Wenjia^1 ; Wang, Quanquan^1 ; Ge, Yi^1 ; Huang, Junhui^1 ; Chen, Zhengfang^2

State Grid Jiangsu Economic Reseasrch Institute, Nanjing, China^1

State Grid Suzhou Power Supply Company, Nanjing, China^2

关键词: Commutation failure;    Dynamic reactive power compensations;    Multi-infeed DC indices;    Multi-infeed effective short circuit ratios;    Multi-infeed HVDC systems;    Multi-infeed interaction factors;    Power grid securities;    Security and stability;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/4/042033/pdf
DOI  :  10.1088/1755-1315/121/4/042033

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The impact of Multi-infeed HVDC has gradually increased to security and stability operating in Jiangsu power grid. In this paper, an appraisal method of Multi-infeed HVDC power grid security and stability is raised with Multi-Infeed Effective Short Circuit Ratio, Multi-Infeed Interaction Factor and Commutation Failure Immunity Index. These indices are adopted in security and stability simulating calculation of Jiangsu Multi-infeed HVDC system. The simulation results indicate that Jiangsu power grid is operating with a strong DC system. It has high level of power grid security and stability, and meet the safety running requirements. Jinpin-Suzhou DC system is located in the receiving end with huge capacity, which is easily leading to commutation failure of the transmission line. In order to resolve this problem, dynamic reactive power compensation can be applied in power grid near Jinpin-Suzhou DC system. Simulation result shows this method is feasible to commutation failure.