| 引用本文: | 朱誉,华凤林,杨银国,牟同鹏,李力,李宇骏,刘洋,向丽玲.基于等面积准则的含电流限幅虚拟同步机控制暂态稳定性分析[J].电力自动化设备,2025,45(2):209-216. |
| ZHU Yu,HUA Fenglin,YANG Yinguo,MU Tongpeng,LI li,LI Yujun,LIU Yang,XIANG Liling.Transient stability analysis of virtual synchronous generator control with current limiting based on equal area criterion[J].Electric Power Automation Equipment,2025,45(2):209-216. |
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| 摘要: |
| 高比例电力电子装备接入电力系统使得现代电力系统呈现出与以往完全不同的特征。基于等面积准则研究了含电流限幅的虚拟同步机(VSG)的暂态稳定性问题，在依据VSG的内环控制和虚拟同步控制响应速度差异得到的简化二阶非线性模型的基础上，构建了动态切换系统模型，运用等面积准则分析了VSG并网系统的稳定机理，推导了系统的保守稳定条件，并提出了提高系统抗干扰能力的饱和电流矢量角度配置方案。在PSCAD/EMTDC中对单台VSG经传输线连接到无穷大母线的研究模型进行了仿真分析，其结果验证了所推导稳定条件的准确性。 |
| 关键词: 等面积准则 虚拟同步机 电流限幅 切换系统 饱和电流矢量角 暂态稳定性 |
| DOI：10.16081/j.epae.202410017 |
| 分类号:TM712 |
| 基金项目:南方电网公司科技项目(036000KK52220018(GDKJXM20220249)) |
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| Transient stability analysis of virtual synchronous generator control with current limiting based on equal area criterion |
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ZHU Yu1, HUA Fenglin2, YANG Yinguo1, MU Tongpeng2, LI li1, LI Yujun2, LIU Yang1, XIANG Liling1
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1.Electric Power Dispatching and Control Center of Guangdong Power Gird Co.,Ltd.,Guangzhou 510060, China;2.School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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| Abstract: |
| High proportion of power electronic equipment integrated power system makes the modern power system present completely different characteristics from the conventional one. The transient stability of vir-tual synchronous generator(VSG) with current limiting is studied based on the equal area criterion(EAC). Based on the simplified second-order nonlinear model obtained from the difference in response speed between the inner-loop control and virtual synchronous control of VSG, a dynamic switching system model is constructed, and the stabilizing mechanism of the grid-connected VSG system is analyzed by applying the EAC to derive the conservative stabilizing conditions of the system. The saturated current vector angle configuration scheme is put forward to improve the system’s anti-interference capability. The research model of a single VSG connected to an infinite bus via a transmission line is simulated and analyzed in PSCAD/EMTDC, and the results verify the accuracy of the derived stability conditions. |
| Key words: equal area criterion virtual synchronous generator current limiting switching system saturated current vector angle transient stability |
