| 引用本文: | 张孝军,徐宇新,王阳光,黄勇,吴宇奇,叶雨晴,马啸,王子璇,李正天.下垂控制下考虑负荷电压与频率特性时过欠电压与过欠频率检测盲区分析[J].电力自动化设备,2020,40(7): |
| ZHANG Xiaojun,XU Yuxin,WANG Yangguang,HUANG Yong,WU Yuqi,YE Yuqing,MA Xiao,WANG Zixuan,LI Zhengtian.Non-detection zone analysis of OUV and OUF considering load voltage and frequency characteristics under droop control[J].Electric Power Automation Equipment,2020,40(7): |
|
| 摘要: |
| 针对目前孤岛检测研究中下垂控制策略下被动法的检测性能分析暂未完备，以及并联RLC负荷无法准确贴合实际负荷工况的问题，选取过欠电压检测法与过欠频率检测法，基于下垂控制策略分析其在考虑负荷电压与频率特性的综合负荷模型下的检测盲区。通过求取并分析检测盲区的数值解可得负荷特性参数、下垂系数标幺值以及负荷消耗功率的变化均会影响检测盲区的分布，同时其与RLC负荷模型下的检测盲区存在差别。仿真实验结果证明了理论分析的正确性。 |
| 关键词: 下垂控制策略 综合负荷模型 过欠电压 过欠频率 检测盲区 孤岛 |
| DOI：10.16081/j.epae.202006021 |
| 分类号:TM711 |
| 基金项目:国网湖南省电力有限公司科技项目(5216A018007W) |
|
| Non-detection zone analysis of OUV and OUF considering load voltage and frequency characteristics under droop control |
|
ZHANG Xiaojun1, XU Yuxin1, WANG Yangguang1, HUANG Yong1, WU Yuqi2, YE Yuqing2, MA Xiao2, WANG Zixuan2, LI Zhengtian2
|
|
1.State Grid Hunan Electric Power Co.,Ltd.,Changsha 410004, China;2.State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
|
| Abstract: |
| Aiming at the problems in islanding detection research at present that, the detection performance analysis of passive method under droop control strategy is not complete and the parallel RLC load cannot fit the actual load condition accurately, the OUV(Over/Under Voltage) detection method and the OUF(Over/Under Frequency) detection method are selected, and their none-detection zones under the integrated load model considering voltage and frequency characteristics are analyzed based on droop control strategy. The numerical solution of none-detection zone is calculated and analyzed, which shows that the variations of load characteristic parameters, per-unit droop coefficients and load consumption power have effect on the distribution of none-detection zone, and it is different from the none-detection zone under the RLC load model. Simulative results verify the correctness of theoretical analysis. |
| Key words: droop control strategy integrated load model OUV OUF none-detection zone islanding |
