GENEVA, April 5 -- STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY (No. 1122 Yuanshen Road, Free Trade ZonePudong New Area, Shanghai 200122), 国网上海市电力公司 (中国上海市浦东新区自由贸易试验区源深路1122号), EAST CHINA ELECTRIC POWER TEST AND RESEARCH INSTITUTE CO, LTD. (No. 171 Handan RoadHongkou District, Shanghai 200437), 华东电力试验研究院有限公司 (中国上海市虹口区邯郸路171号) filed a patent application (PCT/CN20...