水风互补四川清洁能源外送优化

摘要

Hydropower and wind power of Sichuan Provincial have substantial surplus of electricity quantity and seasonal complementary character.In order to take advantage of clean energy of Sichuan grid and power transmission capability of 4 UHVDC transmission lines in Sichuan system,study of optimizing annual delivery quantity of Sichuan electricity with consideration of hydropower/wind power complementation character is performed.By achieving optimal allocation of Sichuan green clean energy in greater range,economic efficiency of 4 UHVDC transmission lines in Sichuan system can be improved.The result shows that annual utilization hours of 4 UHVDC transmission lines can be increased by 75 ～280 hours after optimization.%四川省水电与风电全年均有富余电量可供外输.为充分利用四川水风清洁能源且全年季节性互补特性以及川西南特高压直流输电平台的送电能力.考虑通过水风互补、合理优化多回川西南特高压直流全年外送四川清洁能源电量.实现四川清洁能源在更大范围内的资源优化配置,提高川电出口特高压直流输电线路利用小时数.研究表明:通过实现全年水风季节性互补,针对丰平枯不同时期水丰出力特性,调整增加4回特高压直流输电线路外送清洁能源电量后.可增加目前川电出口4回特高压输电线路年利用小时数75～280 h.