Stator Grounding Fault Location Method of CRDM Power System Generator in Nuclear Power Plant Considering Spatial Distribution Characteristics of Windings

WANG Yikai; TANG Chenxiao; QIAO Jian; WANG Zengping; WANG Yingge; YIN Xianggen; XU Tianle; GU Qiaogen

doi:10.13334/j.0258-8013.pcsee.250662

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Stator Grounding Fault Location Method of CRDM Power System Generator in Nuclear Power Plant Considering Spatial Distribution Characteristics of Windings

更新时间：2026-09-28

- Stator Grounding Fault Location Method of CRDM Power System Generator in Nuclear Power Plant Considering Spatial Distribution Characteristics of Windings
- Vol. 46, Issue 14, Pages: 5783-5793(2026)
- 作者机构：
  
  1. 1 新能源电力系统全国重点实验室(华北电力大学),河北省,保定市,071003
  2. 2 强电磁技术全国重点实验室(华中科技大学),湖北省,武汉市,430074
  3. 3 南京南瑞继保电气有限公司,江苏省,南京市,211102
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.250662
  CLC：
- Published：2026
- 稿件说明：
移动端阅览
WANG Yikai, TANG Chenxiao, QIAO Jian, et al. Stator Grounding Fault Location Method of CRDM Power System Generator in Nuclear Power Plant Considering Spatial Distribution Characteristics of Windings[J]. 2026, 46(14): 5783-5793.
DOI：

WANG Yikai, TANG Chenxiao, QIAO Jian, et al. Stator Grounding Fault Location Method of CRDM Power System Generator in Nuclear Power Plant Considering Spatial Distribution Characteristics of Windings[J]. 2026, 46(14): 5783-5793. DOI： 10.13334/j.0258-8013.pcsee.250662.

摘要

发电机定子接地故障是核电站棒控电源系统中最为常见的故障形式，精确求解绕组故障位置对实现快速故障检修和供电恢复具有重要意义。该文基于棒控电源系统发电机定子绕组的空间结构特点，对Zig-Zag绕组接线方式下的绕组电势分布特征进行几何建模；基于绕组电势空间分布特征构建绕组故障点定位方法，实现全绕组精确定位；PSCAD/EMTDC仿真分析和动模试验验证了所提方法的准确性，并表明其不受接地故障位置、过渡电阻及发电机运行状况的影响。

Abstract

Generator stator ground faults are the most common faults in the control rod drive system of a nuclear power plant. Accurately solving the winding fault location is of great significance for rapid fault maintenance and power supply recovery. Based on the spatial structure characteristics of the generator stator winding of the rod-controlled power supply system

the geometric modeling of the winding potential distribution characteristics under the Zig-Zag winding connection mode is carried out. Based on the spatial distribution characteristics of winding potential

the winding fault location method is constructed to realize the precise positioning of the whole winding. PSCAD/EMTDC simulation analysis and dynamic simulation test verify the accuracy of the proposed method

and prove that it is not affected by the grounding fault location

transition resistance and generator operation status.

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