水电高占比下风电接入对系统稳定性影响  

Influence of Wind Power on System Stability under High Ratio of Hydropower

作　　者：刘志坚[1] 戴钊仕 LIU Zhijian;DAI Zhaoshi(Faculty of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学电力工程学院,云南昆明650500

出　　处：《电力科学与工程》2024年第2期19-29,共11页Electric Power Science and Engineering

基　　金：2023年云南省基础研究专项重点项目(202301AS070055)。

摘　　要：随着绿色清洁高效能源基地的构建,以水电为主体的水风互补成为我国西南能源开发的重要特征。为研究在典型水电系统中接入风电对系统稳定性带来的影响,首先,针对水风互补系统以转矩分析法分析了风电接入对系统频率和功角稳定性的影响,并通过算例和Prony分析验证了风速与风电渗透率对系统稳定性的影响。结果表明,风电的接入在一定程度上可以削弱传统水电系统的超低频振荡,而风电接入互联送端系统会导致区域等值惯量的下降,进而使系统区域间低频振荡风险加剧。其次,考虑风电的接入会诱发区域间低频振荡,在风电系统中引入风电的附加综合虚拟惯性与阻尼控制。算例与Prony分析验证了该控制策略能有效提高系统稳定性。最后,在区域间大规模风电接入场景下,利用改进的鲸鱼算法对风电的附加控制器参数进行了优化;结果表明,参数的整定有效提高了系统的频率以及功角稳定性。With the construction of green,clean and efficient energy base,water-wind complementation with hydropower as the main body has become an important feature of energy development in southwest China.In order to study the influence of wind power on the stability of a typical hydropower system,firstly,the influence of wind power on the frequency and power angle stability of the system is analyzed by torque analysis method,and the influence of wind speed and wind power permeability on system stability is verified by a numerical example and Prony analysis.The results show that the ultra-low frequency oscillation of traditional hydropower system can be weakened to a certain extent by wind power,however,wind power connected to interconnected transmission terminal system will lead to the decrease of regional equivalent inertia,which will aggravate the risk of inter-regional low-frequency oscillation.Secondly,considering that wind power can induce inter-regional low-frequency oscillation,wind power is introduced into the wind power system of the additional integrated virtual inertia and damping control.Numerical examples and Prony analysis show that the control strategy can effectively improve the system stability.Finally,in the inter-regional large-scale wind power access scenario,the parameters of the additional controller are optimized by using the improved whale algorithm,the stability of frequency and power angle can be improved effectively by adjusting the parameters.

关 键 词：新型电力系统 高比例可再生能源 大电网仿真建模 水风出力互补 电力系统稳定 风电附加控制 

分 类 号：TM712[电气工程—电力系统及自动化]