A multi-parameter joint diagnosis method for corrosion state of grounding network in high voltage substation
高压变电站接地网腐蚀状态的多参数联合诊断方法

摘要

高压变电站接地网在长期运行中易受到土壤环境、电化学反应及运行工况等多重因素影响而发生腐蚀，直接威胁系统安全与可靠性。单一参数难以全面反映腐蚀特征，因而提出一种基于多参数联合的诊断方法。该方法通过电气特性、化学指标与结构状态的综合分析，建立多维度信息融合模型，实现对接地网腐蚀状态的定量评估与趋势识别。结果表明，多参数联合诊断能有效提升腐蚀识别的准确性与稳定性，为接地网运维决策提供科学依据。

Abstract

Over time, grounding grids in high-voltage substations are susceptible to corrosion caused by multiple factors including soil conditions, electrochemical reactions, and operational stresses, which directly threaten system safety and reliability. Since single-parameter analysis cannot comprehensively reflect corrosion characteristics, this study proposes a multi-parameter integrated diagnostic method. By conducting comprehensive evaluations of electrical properties, chemical indicators, and structural status, the proposed approach establishes a multidimensional information fusion model to enable quantitative assessment and trend identification of grounding grid corrosion.
Results demonstrate that this integrated diagnostic method significantly enhances the accuracy and stability of corrosion detection, providing scientific support for operational decision-making in grounding grid maintenance.