GENEVA, May 3 -- ELECTRIC POWER RESEARCH INSTITUTE., CHINA SOUTHERN POWER GRID (3/F of Building J3 and 3/F, 4/F, 5/F of Building J1, No. 11 Kexiang Road, Science Park, Luogang DistrictGuangzhou, Guangdong 510663), 南方电网科学研究院有限责任公司 (中国广东省广州市萝岗区科学城科翔路11号J1栋3、4、5楼及J3栋3楼), CHINA SOUTHERN POWER GRID (No. 11 Kexiang Road, Science Park, Luogang DistrictGuangzhou, Guangdong 510663), 中国南方电网有限责任公Ö...