The research of SSR which can be restrained by photovoltaic grid connected

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Li, Kuan^1 ; Liu, Meng^1 ; Zheng, Wei^2 ; Li, Yudun^1 ; Wang, Xin^1

State Grid Shandong Electric Power Research Institute, Jinan

250002, China^1

Shandong Zhongshi Yitong Group Co. Ltd., Jinan

250002, China^2

关键词: Environmental benefits;    Photovoltaic grids;    Photovoltaic power generation;    Series capacitive compensations;    Sub-synchronous oscillations;    Subsynchronous resonance;    Torque coefficient;    Transmission capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/4/042014/pdf
DOI  :  10.1088/1755-1315/121/4/042014

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Utilization of photovoltaic power generation has attracted considerable attention, and it is growing rapidly due to its environmental benefits. The series capacitive compensation is needed to be introduced into the lines which could improve the transmission capacity. However, the series capacitive compensation may lead to sub-synchronous resonance(SSR). This paper proposes a method to restrain the SSR based on photovoltaic grid connected which is caused by series capacitive compensation. Sub-synchronous oscillation damping controller (SSDC) is designed based on complex torque coefficient approach, and the SSDC is added to the PV power station's main controller to damp SSR. IEEE Second benchmark model is used as simulation model based on PSCAD/EMTDC. The results show that the designed SSDC could restrain SSR and improve stability in PV grid connected effectively.