摘要
新能源比重的不断增加导致电力系统惯量水平降低。为防止低惯量系统故障后频率快速跌落,亟须挖掘新型惯量响应资源。快速频率响应负荷(FFRL)可以根据电网故障后频率变化率灵活调节负荷水平以提供紧急支撑。文中基于FFRL参与的电力系统频率响应模型给出了FFRL惯量支撑效果评估方法,并结合不同市场主体的惯量服务补偿机制建立了FFRL参与惯量辅助服务优化模型。算例结果验证了所提FFRL惯量支撑效果评估方法的准确性与FFRL参与惯量辅助服务对系统运行经济性与系统频率安全稳定的提升效果。相比于传统火电机组,FFRL可以凭借更少的响应容量提供更多的惯量响应,并根据其响应策略与控制方式进行灵活变换,从而更精准地响应电网对自身惯量水平的要求。
The increasing proportion of renewable energy has led to the reduction of the power system inertia level.To prevent rapid frequency drop after fault in the low-inertia system,it is urgent to explore new inertia response resources.Fast frequency response load(FFRL)can flexibly adjust the load level to provide emergency support according to the rate of change of frequency after the power grid fault.An assessment method for FFRL inertia support effect is proposed based on the system frequency response model of power system with FFRL participation.An optimization model for FFRL participation in inertia auxiliary services is established considering the inertia service compensation mechanism of different market entities.The calculation results have verified the accuracy of the proposed assessment method and the improvement effect of the participation of FFRL in inertia auxiliary services on system operation economy and system frequency safety and stability.Compared with traditional thermal power units,FFRL can provide more inertia response with less response capacity,and flexibly transform according to its response strategy and control method,thereby more accurately responding to the grid requirements for its own inertia level.
作者
缪蔡然
江叶峰
施琳
樊陈
姚建国
王琦
MIAO Cairan;JIANG Yefeng;SHI Lin;FAN Chen;YAO Jianguo;WANG Qi(School of Electrical Engineering,Southeast University,Nanjing 210096,China;State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210024,China;China Electric Power Research Institute(Nanjing),Nanjing 210003,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2024年第16期99-108,共10页
Automation of Electric Power Systems
基金
国家电网有限公司科技项目(5108-202218280A-2-293-XG)。
关键词
新能源
快速频率响应负荷
电力系统惯量
惯量支撑
辅助服务
renewable energy
fast frequency response load
inertia of power system
inertia support
auxiliary service
作者简介
缪蔡然(1999-),女,硕士研究生,主要研究方向:综合能源系统。E-mail:miaocairan@seu.edu.cn;江叶峰(1976-),男,硕士,主要研究方向:电网运行分析、电力系统自动化。E-mail:jyf1976.sina.cn;施琳(1988-),男,博士,主要研究方向:电力系统调度自动化技术。E-mail:shilinchina@126.com;通信作者:王琦(1989-),男,博士,副教授,主要研究方向:电力信息物理系统、电力系统网络安全等。E-mail:wangqi@seu.edu.cn。
