HUANG Xian\|bin1, LIN Da1, WANG Hui\|fang1, WU Tao2

(1.College of Electrical Engineering, Zhejiang University., Hangzhou 310027, China;

2.Jibei Electric Power Research Institute，Beijing 100045, China)

 

 

Abstract: Aiming at solving stability problems of the power grid when large scale Photovoltaic is connected. it is very necessary to reorganize and summarize the research results on Photovoltaic low voltage ride through strategies while a power failure from home and abroad. Firstly, current requirements on Photovoltaic power low voltage ride through capability in China and the approaches to achieve them are analyzed. Secondly, concrete approaches to achieve low voltage ride through and their developments are elaborated respectively with two strategies which are additional auxiliary equipment and inverter control. Then the advantages and disadvantages of the two ride through strategies and their approaches are analyzed and summarized. This paper provides suggestions and references for further study on Photovoltaic power low voltage ride through strategies. Finally, The results indicate that Both types of low voltage ride through strategies can be used either alone or combined according to the actual situation in order to be more effective and economical.

Key words: photovoltaic system; low voltage ride through(LVRT); review