水-光互补协调运行的理论与方法初探  

PRELIMINARY RESEARCH OF THEORY AND METHOD OF HYDRO/SOLAR COMPLEMENTARY OPERATION

作　　者：安源[1] 方伟[1] 黄强[1] 谢小平[2] 师小雨 丁航[1] 

机构地区：[1]西北旱区生态水利工程国家重点实验室培育基地西安理工大学,西安710048 [2]黄河上游水电开发有限责任公司,西宁810008

出　　处：《太阳能学报》2016年第8期1985-1992,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金重大项目(51190093);黄河上游水电开发有限责任公司项目

摘　　要：以全球最大的黄河龙羊峡水-光互补项目为研究对象,分析水电和光伏发电特点,提出"水电补充能源"的新概念和内涵,揭示水-光互补协调运行的机理,通过水电一次补偿光电锯齿波动和二次补偿光电的间歇性、波动性和随机性,使水电可以在短期调度中以容量支持光电,光电则可以在中长期调度和调峰运行中以电量支持水电。分析短期调度中水电对光电的补偿能力,推导水-光互补计算公式,找出水-光互补运行发生光伏弃光、水电弃水的原因和工况。以龙羊峡水-光互补项目为例,建立水-光互补协调运行模型,实例表明水-光互补协调运行可改善光伏发电质量,避免或减少弃光电量发生,同时水-光互补比水电站单独运行调峰能力更强。Taking the world＇ s largest hydro/solar power combination-Longyangxia project as the research object, the characteristics of hydropower generation and solar PV generation were analyzed, the new concept and connotation of supplementary power of hydropower were presented, and the principle of hydro/solar complementary operation was revealed. In short term scheduling, hydropower generation can improve PV generation via the first compensation for PV＇s zigzag output and the second compensation for PV＇ s interim, fluctuant and random output. The hydropower generation can support capacity of PV generation in short term scheduling, the PV generation is able to support hydropower generation by its compensatory electricity generation in mid-long term scheduling and peak-toad regulating operation. Meanwhile, the compensation ability of hydropower generation for PV generation in short term scheduling was discussed; the formulae for hydro/solar compensation calculation were theoretically derived to explore the cause and condition on water spillage and solar PV spillage during hydro/solar complementary operation. Finally, a calculation model for hydro/solar complementary operation was formulated on the basis of Longyangxia hydro/solar power combination. The results show that hydro/solar complementary operation can remarkably improve the quality of PV power, effectively prevent or reduce solar power curtailment, and provide stronger peak-load regulating capacity than a single hydropower plant.

关 键 词：龙羊峡水-光互补 协调运行 水电补充能源 补偿能力 调峰能力 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]