摘要
以水电为纽带的多能互补发电已成为提升清洁能源消纳水平的重要手段。梯级水光互补联合发电系统受光伏出力的强随机性和间歇性影响,极大地限制了互补系统的安全稳定运行。围绕梯级水光互补联合发电系统运行安全分析的实际工程问题,从互补系统的发电计划安全校核和安全运行区间分析两个角度,提出了基于多项式混沌理论的概率配点算法的运行安全分析方法并研发了相应软件。该方案可有效应对随机性影响下大规模场景抽样带来的求解效率问题,能够在保证计算精确性的前提下,显著提高求解效率,为互补系统的安全稳定运行提供了技术支持。
Multi-energy complementary power generation system linked with hydropower has become an important means to enhance clean energy consumption.The cascaded hydro-photovoltaic complementary generation system is affected by the strong randomness and intermittence of photovoltaic output,which greatly limits the safe and stable operation of complementary system.Focusing on the practical engineering problems of operation safety analysis for cascaded hydro-photovoltaic complementary generation system,and as viewed from power generation plan safety check and safe operation interval analysis,an operation safety analysis method with probabilistic collocation point algorithm based on polynomial chaos theory is proposed,and the corresponding software is developed.The application shows that the proposed analysis method can effectively deal with solving efficiency problem brought by large-scale scene sampling with randomness,and can significantly improve the solving efficiency under the premise of ensuring calculation accuracy,which provides the technical support for safe and stable operation of the complementary system.
作者
罗彬
苗树敏
邱一苇
高浪
陈刚
王亮
Luo Bin;Miao Shumin;Qiu Yiwei;Gao Lang;Chen Gang;Wang Liang(Sichuan Energy Internet Research Institute of Tsinghua University,Chengdu 610023,Sichuan,China;State Grid Sichuan Electric Power Research Institute,Chengdu 610041,Sichuan,China;Department of Elctrical Engineering,Tsinghua University,Beijing 100084,China)
出处
《四川电力技术》
2021年第3期1-6,55,共7页
Sichuan Electric Power Technology
基金
国家重点研发计划项目(2018YFB0905200)
国家自然科学基金项目(51909133,51907099)。
关键词
梯级水光互补系统
运行安全分析
多项式混沌理论
软件研发
cascaded hydro-photovoltaic complementary generation system
operation safety analysis
polynomial chaos theory
software development
