摘要
研究了大型风电场联合集中式储能系统参与电网一次调频的可行性与经济性,并提出一种风储联合调频控制策略。统计分析了正常运行与发生功率缺额事件下实际电网的频率特性,仿真验证了新能源机组参与电网一次调频的必要性;类比火电机组一次调频原理,提出了新能源机组参与一次调频的基本条件;分析了风电机组基于转子惯量、预留备用和配置储能3种调频方案的技术经济性,指出风电场装配集中式储能以承担一次调频是更为经济有效的调频方案。旨在充分利用风机转子惯量以减少配置储能容量,提出一种风储协调的调频控制策略,有效减少储能容量。
This paper studied the feasibility and economy of energy storage system combined with large-scale wind farm participating in primary frequency modulation(FM), and put forward a wind-storage cooperative FM control strategy. The frequency characteristics of power grid under normal operation and power shortage events were analyzed by statistical method, and the necessity of new energy stations participating in primary FM was verified. Analogous to the primary FM regulation principle of thermal power plants, the basic conditions for new energy units to participate in primary FM were put forward. The technical and economic characteristics of three FM schemes, such as FM based on reserved capacity mode, based on rotor inertia of wind fans and based on energy storage station,were analyzed, it was pointed out that the third scheme was more economical and effective. In order to make full use of the rotor inertia of the fan to reduce the energy storage capacity, a windstorage cooperative FM control strategy was proposed, which could effectively reduce the energy storage capacity by 26%.
作者
刘辉
葛俊
巩宇
刘汉民
肖飞
LIU Hui;GE Jun;GONG Yu;LIU Hanmin;XIAO Fei(State Grid Jibei Electric Co.,Ltd. Research Institution,Xicheng District,Beijing 100045,China;Grid-connected Operation Technology for Wind-solar-storage Hybrid System State Grid Corporation Key Laboratory,Xicheng District,Beijing 100045,China;State Grid Jibei Electric Power Co.,Ltd.,Xicheng District,Beijing 100053,China;State Grid Xinyuan Zhangjiakou Wind- Photovoltaic-Srorage and Transmission Pilot Power Station Co.,Ltd.,Zhangjiakou 075000,Hebei Province,China;Xi’an Xuji Power Electronics Technology Corporation,Xi’an 710000,Shaanxi Province,China)
出处
《全球能源互联网》
2019年第1期44-52,共9页
Journal of Global Energy Interconnection
基金
国家电网公司科技项目"新能源主动支撑电网工程实用化控制技术及并网适应性研究和应用"(52010118000N)~~
关键词
储能
一次调频
虚拟同步机
风储协调
经济性
energy storage
primary frequency modulation
virtual synchronous machine
wind-storage coordination
economy
