考虑多控制目标的IIDG低压穿越控制方法

被引:7
作者
何晋
李智轩
左金花
李维希
孙琮岳
李光耀
机构
[1] 云南民族大学电气信息工程学院
关键词
不对称故障; 逆变型分布式电源(IIDG); 电压支撑; 最大有功功率输出控制; 有功输出振荡抑制控制; 电流限幅;
D O I
暂无
中图分类号
TM73 [电力系统的调度、管理、通信];
学科分类号
120103 [信息系统与信息管理];
摘要
现有逆变型分布式电源(IIDG)低压穿越控制有电压支撑效果不理想,控制目标单一,输出电流存在越限风险等不足,针对此问题,文中提出一种考虑多控制目标的低压穿越控制方法。首先以预设相电压为约束条件,构建得出电压支撑方程,据此实现电压支撑控制;其次,通过约束IIDG向电网注入负序无功电流的大小,实现有功输出振荡抑制控制。同时为充分利用IIDG的剩余容量,文中通过最大有功功率输出和电流限幅控制计算得出IIDG正序有功电流参考值,保证在IIDG输出电流不发生越限的前提下,实现IIDG最大有功功率输出。仿真算例表明,与现有正序无功电流注入控制方法相比,文中多控制目标低压穿越控制方法具有更加良好的故障控制效果。
引用
收藏
页码:92 / 101
页数:10
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