智能接地配电系统关键参数设计

LIU Jian

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智能接地配电系统关键参数设计

更新时间：2025-08-13

- 智能接地配电系统关键参数设计
- Automation of Electric Power Systems Vol. 42, Issue 16, Pages: 180-186(2018)
- 作者机构：
  
  陕西电力科学研究院,陕西省,西安市,710054
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2018
- 稿件说明：
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LIU Jian. [J]. Automation of electric power systems, 2018, 42(16): 180-186.
DOI：

LIU Jian. [J]. Automation of electric power systems, 2018, 42(16): 180-186. DOI：

摘要

为了更好地应用智能接地配电系统解决中性点非有效接地配电系统单相接地故障处理，在对其基本原理简要论述的基础上，深入分析了接地开关合闸和分闸瞬间暂态过程及其抑制措施、单相接地选相错误的容错和纠错措施，在此基础上得出了接地中间电阻的设计参数。对智能接地配电系统中，中性点不接地系统和中性点经消弧线圈接地系统在永久性单相接地时的选线和定位方法进行了研究，并探讨了参数设计问题。针对断线不接地等超高阻接地选线问题，提出一种根据脉冲接地变压器投入之后和之前零序电流比值进行选线的方法。仿真分析和实验结果与理论分析一致，表明了所述方法的可行性和有效性。

Abstract

To make full use of smart grounding system to solve single-phase grounding fault in the neutral non-effectively grounding distribution systems

based on the simple description of basic principles

the transient process during the closing and opening period of the grounding switch and inhibition measures are analyzed in detail

the techniques of transient process reduction and grounded phase identification error correction are described with the corresponding analysis

the design parameters of intermediate resistance of grounding are obtained. The method of identification and location of the single-phase grounding position in permanent single-phase grounding fault for systems with neutral ungrounded and with neutral grounded through an arc-suppression coil are investigated

respectively

together with their design considerations. A method of identifying the disconnected feeder is put forward based on the ratio of zero sequence current before and after accessing the pulse grounding transformer. The simulation and experimental results are in consistent with the theoretical analysis

which shows the feasibility and effectiveness of the proposed method.

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Related Institution

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Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University)

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