1. Xi’an Dynamic Inspection and Testing Co., Ltd., Xi’an 710000, China
2. Huaneng Jinchang Photovoltaic Power Generation Co., Ltd., Jinchang 737100, China
3. School of Electrical Engineering, Nantong University, Nantong 226000, China
4. Nanjing Moral Testing and Certification Co., Ltd., Nanjing 210000, China