直流楼宇的风储微网系统的大信号稳定性分析OA
Large Signal Stability Analysis of DC Building Wind Storage Microgrid System
针对风储直流楼宇微网系统易受到外界大干扰影响,在多模式切换、大功率负荷投切情况下,直流母线易失稳,严重威胁到用电设备的安全可靠运行的问题,通过建立含永磁直驱同步风力发电机的直流风储微网系统大信号简化模型,运用混合势函数理论,构建该系统的大信号等效模型,解析大信号稳定性边界,并建立对应仿真模型验证了理论计算的稳定域范围及理论的正确性与准确精度,误差可以控制在6%以内,保证稳定域范围内系统稳定;在此基础之上,进一步分析了硬件电路中电容C、电感L和关键控制回路参数Kvp对稳定域改善的影响,为直流楼宇系统的运行切换稳定性提升及控制参数优化提供了新思路.
In response to the susceptibility of wind storage DC building microgrid systems to external interference,the DC bus is prone to instability during multi-mode switching and high-power load switching,posing a serious threat to the safe and reliable operation of electrical equipment.A large-signal simplified model of the permanent magnet direct-drive synchronous wind power generation system was established,the theory of mixed potential function was applied,the large-signal stability boundary of the system was calculated,and the correctness and accuracy of the criterion was verified,and the error could be controlled within 6%.Finally,through analyzing the criterion,it was concluded that the parameters of the system such as inductance L,capacitance C,and the magnitude of the rectifier PI control parameter Kvp have an important influence on the large-signal stability boundary.This provided new ideas for improving the operational switching stability and optimizing control parameters of DC building systems.
崔玉璐;尚兴明;钱欣;童晓庆;张志国
国网冀北电力有限公司秦皇岛供电公司,河北 秦皇岛 066000国网冀北电力有限公司秦皇岛供电公司,河北 秦皇岛 066000国网冀北电力有限公司秦皇岛供电公司,河北 秦皇岛 066000秦皇岛福电集团电力设计有限公司,河北 秦皇岛 066000国网冀北电力有限公司秦皇岛供电公司,河北 秦皇岛 066000
信息技术与安全科学
直流微网混合势函数理论大信号稳定性分析
DC microgridmixed potential function theorylarge-signal stability analysis
《电气传动》 2026 (1)
41-47,7
国网秦皇岛供电公司2024年群众性创新项目(520104240002)
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