摘要
随着我国能源绿色低碳转型的发展,新能源在电力系统发电结构的比重逐年提升,导致电网动态频率特性出现新的变化。为深入研究电网频率的总体演变规律及概率分布特性,从理论上阐述了考虑新能源渗透的电网频率变化趋势,给出计及新能源渗透率的电力系统调频简化模型及其稳定性分析。使用Simulink搭建电网频率仿真模型,并通过实验室高精度PCI-4474采集卡及基于LabVIEW编写的人机交互界面采集电网频率,得出的仿真和实测结果验证了理论分析所得出的结论。最后以应用的角度总结了电力系统频率概率图对智能电网安全稳定运行及电能计量装置在线评估的重要性。
With the development of China's green energy and low-carbon transformation,the proportion of new energy in the power system generation structure is increasing year by year,leading to changes in the dynamic frequency characteristics of the power grid.This paper researches on the grid frequency distribution characteristics of the general evolution law and,and sets out the thinking on the new energy power grid frequency variation trend of infiltration.It also looks at new energy and permeability of the simplified model of power system frequency modulation as well as stability analysis.It uses Simulink to build a power grid frequency simulation model.Through a laboratory high precision acquisition card PCI-4474 and man-machine interactive interface based on the LabVIEW write collection power grid frequency,it concludes that the simulation and experimental results validate the theoretical analysis.Finally,the importance of a power system frequency probability graph to smart grid safe and stable operation and power metering device on-line evaluation is summarized.
作者
王中
黎丽丽
李振华
程紫熠
姚为方
刘瑞生
WANG Zhong;LI Lili;LI Zhenhua;CHENG Ziyi;YAO Weifang;LIU Ruisheng(College of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,China;Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station,China Three Gorges University,Yichang 443002,China;State Grid Anhui Electric Power Co.,Ltd.Electric Power Research Institute,Hefei 230601,China;Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518001,China)
出处
《电力系统保护与控制》
CSCD
北大核心
2021年第20期65-73,共9页
Power System Protection and Control
基金
湖北省教育厅重点项目资助(D20201203)
三峡大学学位论文培优基金项目资助(2021SSPY071)
湖北省科技计划项目技术创新专项重大项目资助(2016AAA040)。
关键词
新能源
电网频率
演变规律
稳态误差
概率分布
new energy
power grid frequency
evolution law
steady state error
probability distribution
