风、光高渗透率电网中考虑频率稳定的可再生能源承载力研究  

Estimating maximum penetration level of renewable energy based on frequency stability constrains in networks with high-penetration wind and photovoltaic energy

作　　者：郭小龙 毕天姝[2] 刘方蕾[2] 胥国毅 张锋[1] 王衡 Guo Xiaolong;Bi Tianshu;Liu Fanglei;XuGuoyi;Zhang Feng;Wang Heng(State Grid Xinjiang Electric Power Corporation,Urumqi830002,China;State Key Laboratory of New Energy Power System,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国网新疆电力有限公司,新疆乌鲁木齐830002 [2]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《可再生能源》2020年第1期84-90,共7页Renewable Energy Resources

基　　金：国家电网公司科技项目资助(SGXJ0000TKJS1800306);国家自然科学基金资助项目(51627811,51725702);中央高校基本科研业务费项目(2019MS008)

摘　　要：风电、光伏系统的弱惯量、无惯量特性以及在最大功率跟踪运行的特点影响电网频率的稳定。文章建立了包含常规发电机组和可再生能源发电机组的电网频率响应综合模型;提出了一种考虑频率稳定约束的可再生能源承载力评估方法;在Matlab/Simulink中对所建模型进行仿真,得出电网在不同可再生能源渗透率下的频率响应指标。算例分析表明,文章提出的方法能够快速准确地获得电网可再生能源承载力。Renewable energy such as wind and photovoltaic are developing very fast, which brings challenges to the safe and stable operation of the power system. The inertia-less characteristics of the renewable power generation system and its maximum power tracking operation characteristics have an obvious effect on the frequency stability of the power grid. Based on the analysis of the operation characteristics and frequency response of the renewable power generation system, a method for estimating maximum penetration level of renewable energy in the power system based on the frequency stability constrains is proposed in this paper. A comprehensive frequency response model is proposed to quickly obtain the frequency response of the system with different renewable power penetration level, the model includes different kinds of synchronous generators and renewable power generation systems which have a similar frequency response with the detailed model. The frequency indices rate of change of frequency and frequency nadir is used to evaluate the maximum penetration level of renewable energy. Matlab/Simulink is used to establish and validate the comprehensive model, a case study is used to demonstrate the effectiveness of the proposed methods.

关 键 词：可再生能源发电 频率响应 惯量 可再生能源承载力 

分 类 号：TK51[动力工程及工程热物理—热能工程]