计及光伏出力特性的有源配电网纵联保护

吴楚宏; 牟龙华; 方重凯

doi:10.19912/j.0254-0096.tynxb.2024-1917

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (3) : 616-624. DOI: 10.19912/j.0254-0096.tynxb.2024-1917

计及光伏出力特性的有源配电网纵联保护

吴楚宏, 牟龙华, 方重凯

作者信息 +

PILOT PROTECTION OF ACTIVE DISTRIBUTION NETWORK CONSIDERING PHOTOVOLTAIC OUTPUT CHARACTERISTICS

Wu Chuhong, Mu Longhua, Fang Chongkai

Author information +

文章历史 +

摘要

该研究以含分布式光伏接入的有源配电网为研究对象,结合分布式光伏的具体控制策略分情况分析不同出力情况下光伏电源故障电流幅值和相位特征,并在此基础上分析故障线路两端电流正序故障分量相位差的运行范围。研究表明：传统的电流相位比较式纵联保护在光伏出力较小时可能失效。因此,该研究综合正序电流故障分量的幅值比和相角差改进判据,提出一种基于综合相角差的有源配电网纵联保护方案,该方案仅需采集电流信息,无需安装电压互感器,有较高的经济性。理论分析与仿真结果表明,该方案不受光伏出力变化、故障类型等因素的影响。

Abstract

This article investigates active distribution networks with distributed photovoltaic （PV） integration. Analyzing the specific control strategies of distributed PV units, the study characterizes the fault current magnitude and phase characteristics under varying PV output conditions. On this basis, it analyzes the operating range of the phase difference of the positive-sequence fault component of the current at both ends of the faulted line and concludes that the traditional current phase comparison type pilot protection may fail when the photovoltaic output is small. Therefore, this paper improves the criterion by combining the amplitude ratio and phase angle difference of the positive-sequence fault-component current and proposes an active distribution network pilot protection scheme based on comprehensive phase angle difference. This solution only needs to collect current information and does not need to install voltage transformers, making it highly economical. The simulation results show that this solution is not affected by variations in PV output or fault types.

导出引用

吴楚宏, 牟龙华, 方重凯. 计及光伏出力特性的有源配电网纵联保护[J]. 太阳能学报. 2026, 47(3): 616-624 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1917

Wu Chuhong, Mu Longhua, Fang Chongkai. PILOT PROTECTION OF ACTIVE DISTRIBUTION NETWORK CONSIDERING PHOTOVOLTAIC OUTPUT CHARACTERISTICS[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 616-624 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1917

中图分类号： TM773

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