在极低可观测度下的电力分发网络中的分阶段事件源位置识别方案
Xi Zhang1, Jianyong Zheng1,2, Fei Mei3
1School of Cyber Science and Engineering, Southeast University, Nanjing 211189, China.
Sensors (Basel, Switzerland)
|August 28, 2025
概括
本研究引入了一种使用电压测量偏差 (VMD) 的新型分阶段事件源位置识别 (ESLI) 方案. 这种方法可以在最小的传感器部署下实现精确的故障位置和电流计算.
科学领域:
- 电气工程
- 电力系统分析
背景情况:
- 同步相仪测量技术在电力分配网络 (PDN) 中提供了更好的可见性.
- 测量设备的高成本限制了系统的可观测性和事件源位置识别 (ESLI) 的准确性.
- 在低可观测性条件下,现有的ESLI方法面临挑战.
研究的目的:
- 为具有极低可观测性的PDN提出一个具有成本效益的分阶段ESLI方案.
- 用最小的测量设备实现高精度的ESLI和事件电流计算.
- 开发基于电压测量偏差 (VMD) 的算法,以准确地定位事件源.
主要方法:
- 建议使用基于电压测量偏差 (VMD) 的分阶段ESLI方案.
- 使用虚拟事件电流注入 (VCI) 构建ESLI模型来导出终端总线电压和输出电流.
- 一个基于VMD的分阶段ESLI算法被开发用于有序和准确的事件源搜索.
主要成果:
- 拟议的基于VMD的分阶段ESLI方案实现了高精度的ESLI和事件电流解决.
- 该方法在极低可观测条件下显示出有效性.
- 对IEEE 33总线测试系统的实验结果显示,与最先进的方法相比,性能显著改善.
结论:
- 开发的基于VDM的分阶段ESLI算法为PDN中的事件源位置识别提供了高度准确和成本效益的解决方案.
- 该方案在传感器部署有限的场景中特别有效.
- 这种方法显著提高了PDN在管理和应对事件方面的能力.
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