基于Hellinger距离的大规模光伏送出线路纵联保护

郑择航; 邹贵彬; 郑新铖; 张烁; 林翔宇; 王晓明

doi:10.19912/j.0254-0096.tynxb.2024-1076

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (10) : 267-275. DOI: 10.19912/j.0254-0096.tynxb.2024-1076

基于Hellinger距离的大规模光伏送出线路纵联保护

郑择航¹, 邹贵彬¹, 郑新铖¹, 张烁¹, 林翔宇², 王晓明²

作者信息 +

LARGE-SCALE PHOTOVOLTAIC TRANSMISSION LINE PILOT PROTECTION BASED ON HELLINGER DISTANCE

Zheng Zehang¹, Zou Guibin¹, Zheng Xincheng¹, Zhang Shuo¹, Lin Xiangyu², Wang Xiaoming²

Author information +

文章历史 +

摘要

理论分析大规模光伏发电送出线路故障后的电流特征,并提出一种基于Hellinger 距离的大规模光伏送出线路纵联保护方法,将故障后的电流采样值进行区间分布,利用Hellinger距离算法对两侧采样值分布的相似性进行量化,根据计算结果判断区内外故障。经仿真验证,所提方法能够可靠地反映被保护线路的区内、区外故障,且具有较好的抗噪声与抗同步误差能力。与已有相似度保护以及传统纵联电流差动保护进行对比得出所提保护原理可靠性更高的结论。

Abstract

This paper theoretically analyzes the current characteristics after a fault occurs in the transmission line of large-scale photovoltaic power generation, and proposes a large-scale photovoltaic transmission line pilot protection method based on the Hellinger distance. The current sampling values after the fault are discretized into probability distributions, and the similarity of the sampling value distribution on both sides is quantified using the Hellinger distance algorithm. The internal and external faults are judged based on the calculation results. The simulation verification shows that the proposed method can reliably respond to the internal and external faults of the protected line, and has good anti-noise and anti-synchronization error capabilities. Compared with the existing similarity protection and traditional pilot current differential protection, the proposed protection principle is more reliable.

导出引用

郑择航, 邹贵彬, 郑新铖, 张烁, 林翔宇, 王晓明. 基于Hellinger距离的大规模光伏送出线路纵联保护[J]. 太阳能学报. 2025, 46(10): 267-275 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1076

Zheng Zehang, Zou Guibin, Zheng Xincheng, Zhang Shuo, Lin Xiangyu, Wang Xiaoming. LARGE-SCALE PHOTOVOLTAIC TRANSMISSION LINE PILOT PROTECTION BASED ON HELLINGER DISTANCE[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 267-275 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1076

中图分类号： TM773

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