Technical and economic analysis of intelligent substation

YANG Weixing 12， JIANG Daozhuo 1 ，LI Hui2，ZHANG Xuesong2，DOU Juan4
（1College of Electrical Engineering，Zhejiang University，Hangzhou 310027， China；
2Zhejiang Electric Power Design Institute， Hangzhou 310012， China；
3Zhejiang Electric Power Test & Research Institute， Hangzhou 310014， China;
4 Zhejiang Construction and Installation Technial School， Hangzhou 310022， China）

Abstract：：Investment and efficiency are key issues in intelligent substation construction. In order to solve this problem, after the analysis of advantages and disadvantages of intelligent substation technology program，the benefits of the smart devices， electronic transformer， equipment condition monitoring， a unified data platform and intelligent auxiliary control system were evaluated. With experience in building intelligent  500 kV  pilot substation of Zhejiang province， the experimental results show that intelligent substation investment increase of about 4% to 6% than conventional substation，intelligent equipment investment accounts for a total investment of intelligent substation of about 10% to 15%.
Key words：intelligent substation；technology program；evaluation；economic benefit