热力发电2025，Vol.54Issue(9)：60-70,11.DOI:10.19666/j.rlfd.202411230
大型虚拟电厂频率响应特性及协调控制策略研究
Frequency response characteristics and coordinated control strategy of large-scale virtual power plants
摘要
Abstract
Constructing a large-scale virtual power plant(L-VPP)based on coal-fired units is a vital strategy for achieving"dual-carbon"goals by enabling renewable energy integration and supporting the transition of coal-fired power generation.A dynamic simulation model of the L-VPP and a source-storage frequency regulation control system model are established,which include a 350 MW coal-fired unit,a 100 MW photovoltaic unit,a 90 MW·h battery energy storage system,and internal loads.The frequency response characteristics of the L-VPP are analyzed for various control systems and at different load ramp rates of the coal-fired unit.The results reveal that,the load ramp rate of the coal-fired unit is a critical constraint on frequency response capability when storage capacity is limited.The complementary frequency response characteristics between the source and storage are obtained,leading to a coordinated control strategy that incorporates auxiliary power commands and cyclic determination mechanisms.Simulations demonstrate that the proposed strategy lowers the frequency nadir by 0.06 Hz and shortens the steady-state recovery time by 18.6%.Furthermore,to achieve a steady-state error within the frequency dead band,the load ramp rate of the coal-fired unit is increased from below 3.50 MW/min to 7.00 MW/min.This strategy offers technical guidance for the safe and efficient operation of large-scale virtual power plants.关键词
频率响应特性/协调控制策略/大型虚拟电厂/能源管理系统/调频控制Key words
frequency response characteristics/coordinated control strategy/large-scale virtual power plants/energy management system/frequency regulation control引用本文复制引用
田泽禹,沙钊旸,严卉,王珠,赵全斌,种道彤..大型虚拟电厂频率响应特性及协调控制策略研究[J].热力发电,2025,54(9):60-70,11.基金项目
国家重点研发计划项目(2022YFB4202400) （2022YFB4202400）
陕西省创新能力支撑计划(2023-LL-QY-29)National Key Research and Development Program(2022YFB4202400) （2023-LL-QY-29）
Key Research and Development Program of Shaanxi(2023-LL-QY-29) （2023-LL-QY-29）
