复杂有源配电网短路故障通用计算方法

丁扬天; 戴志辉; 刘钧溢; 宁志恒; 杨明玉; 许东瑞

doi:10.19912/j.0254-0096.tynxb.2025-0560

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (9) : 417-427. DOI: 10.19912/j.0254-0096.tynxb.2025-0560

复杂有源配电网短路故障通用计算方法

丁扬天, 戴志辉, 刘钧溢, 宁志恒, 杨明玉, 许东瑞

作者信息 +

GENERAL CALCULATION METHOD FOR SHORT-CIRCUIT FAULTS IN COMPLEX ACTIVE DISTRIBUTION NETWORKS

Ding Yangtian, Dai Zhihui, Liu Junyi, Ning Zhiheng, Yang Mingyu, Xu Dongrui

Author information +

文章历史 +

摘要

提出一种计及多序网络耦合与动态控制策略建模的短路故障通用计算方法。首先建立多类型DG故障等效模型,分析其低电压穿越和负序电流抑制策略对序分量网络的影响;结合叠加定理将故障网络分解为正常分量与故障分量网络,推导不同短路类型的序网边界条件方程,构建含IBDG的复合序网模型;最后通过迭代修正节点电压与DG注入电流,实现短路故障的求解。仿真结果表明,该方法在面对多类型多点DG接入的复杂有源配电网时有较好适用性,短路故障计算误差均小于3%。

Abstract

A general calculation method for short-circuit faults is proposed, which accounts for multi-sequence network coupling and dynamic control strategy modeling. Firstly, fault equivalent models of multiple types of DGs are established, and the impacts of their low-voltage ride-through and negative-sequence current suppression strategies on sequence component networks are analyzed. Then, based on the superposition theorem, the fault network is decomposed into normal component and fault component networks, and the sequence network boundary condition equations for different short-circuit types are derived to construct a composite sequence network model incorporating IBDGs. Finally, through iterative correction of node voltages and DG injection currents, the short-circuit fault solution is achieved. Simulation results show that the proposed method has good applicability in complex active distribution networks with multiple types and multiple points of DG integration, and the calculation errors of short-circuit faults are all less than 3%.

导出引用

丁扬天, 戴志辉, 刘钧溢, 宁志恒, 杨明玉, 许东瑞. 复杂有源配电网短路故障通用计算方法[J]. 太阳能学报. 2026, 47(9): 417-427 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0560

Ding Yangtian, Dai Zhihui, Liu Junyi, Ning Zhiheng, Yang Mingyu, Xu Dongrui. GENERAL CALCULATION METHOD FOR SHORT-CIRCUIT FAULTS IN COMPLEX ACTIVE DISTRIBUTION NETWORKS[J]. Acta Energiae Solaris Sinica. 2026, 47(9): 417-427 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0560

中图分类号： TM712

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