摘要
针对电能路由器接入目前传统配电网及电力电子化配电网潜在的稳定性问题,在电能路由器主电路拓扑的基础上,基于阻抗匹配理论,详尽推导了电能路由器在dq坐标下的小信号阻抗模型,并通过注入小信号电压扰动信号测量实际阻抗,验证所建立的解析模型的准确性。同时结合广义奈奎斯特稳定性判据以及阻抗模型,分别给出了电能路由器与电力电子配电网并网系统的稳定及不稳定情况下的时-频域仿真验证。在实际物理试验中,分别将电能路由器接入传统配电网及电力电子化配电网,同样验证了模型的正确性及可行性。
Aiming at system stability problem for power routers connected to traditional or power electronic distribution grid,this paper presents a new power router architecture and main circuit topology.Utilizing impedance matching theory,a small signal impedance model of power routers is derived.With stimulation,accuracy of the analytical model is verified.Based on generalized Nyquist stability criterion and power router impedance model,simulations of power routers connected to power electronic distribution system under stable and unstable situations are performed.Finally,practical physical experiments of power routers connected to traditional and power electronic distribution grid are carried out to verify validity of the proposed models.
作者
段青
盛万兴
李振
赵彩虹
王建华
Duan Qing;Sheng Wanxing;Li Zhen;Zhao Caihong;Wang Jianhua(Beijing Key Laboratory of Distribution Transformer Energy-Saving Technology (China Electric Power Research Institute),Haidian District,Beijing 100192,China;College of Information and Electric Engineering,China Agricultural University,Haidian District,Beijing 100083,China;College of Electronic Engineering,Southeast University,Nanjing 210018,Jiangsu Province,China)
出处
《电网技术》
EI
CSCD
北大核心
2019年第1期227-235,共9页
Power System Technology
基金
国家留学基金(201709110021)
国家电网公司基础性前瞻性科技项目资助(交直流无缝混合灵活配电系统基础理论与虚拟现实仿真方法研究)~~
