摘要
为文现四川水电丰期更多季节性电能外送，减少四川电网丰水期弃水电量，发挥国网公司川西3回±800kV特高压直流强大的送电能力、提高工程建设的经济效益和实现更大范围内的节能减排，在川西3回±800kV特高球直流常规送电方式基础上，通过分析四川电网丰期弃水问题特征、送端水电站水文出力特性，提出了优化书水期四川电网外送华东电网3回特高压直流7—10月的送电协议曲线，增加“丰小、丰腰”方式下川电外送华东电网的电力电量．研究表明：优化国网公司川西3回±800kV直流送电协议曲线后．2015年平水年四川电网丰期可实现向华东电网增送约55亿kW·h季节性电能，增加国网公司川西3回±800kV特高压直流输电工程利用小时数约100～350h．经济效益显著。
In order to take advantage of the strong transmission capability of the SGCC＇s three ＋800 kV UHVDC transmissiml lines to increase the outbound delivery of Sichuan＇s seasonal electric energy, in flood season and reduce water abandon-related power loss o Sichuan power grid, based on an analysis of the water abandon characteristics of Sichuan grid in flood season and the hydrological outpu fealures of hydropower stations, it is proposed in this paper to optimize the transmission curves of three ±800 kV UHVDC powe： transmission lines and increase the delivery power of Sichuan grid to East China Grid in high flow period. The study shows that it ean be realized to inerease the delivery output of the Sichuan grid＇s seasonal electric energy by 5 500 GW · h through optimizing the 3-eircui U HV DC transmission curves in 2015.
出处
《中国电力》
CSCD
北大核心
2013年第12期144-150,共7页
Electric Power
