风力发电设备检修引起地电阻率变化的分析研究

Analysis of Geoelectric Resistivity Change Caused by Maintenance of Wind Power Generation Equipment

摘要:

目前,中国正在大力推行风力发电,风电设施与部分地电阻率台站的测区不可避免地出现重叠,这对地电观测环境保护提出了新的要求和挑战。本文针对高邮临泽地电观测站风力发电设备检修期间的地电阻率观测数据变化,结合调查和落实,确认此次数据变化为风力发电设备检修的架空导线两端接地而引起。同时根据资料建立三维有限元模型,分析此类人为环境因素在不同距离、不同观测装置下对地电阻率观测的影响,数值模拟结果显示:风电设施与地电阻率测区合理的距离可以规避此类干扰,且增加地电阻率观测装置的埋设深度可以抑制此类干扰。本文旨在为未来地电观测系统中风力发电区域台站的选址、观测装置布设方式的选择以及分析风电设备检修对观测的影响及数据异常跟踪分析提供具体参考。

Abstract:

China is actively promoting wind power,and as a result,wind power facilities are increasingly overlapping with geoelectric resistivity observation areas. This presents new challenges for the environmental protection of geoelectric observations. This study analyzes changes in ground resistivity data during the maintenance of wind power generation equipment at Linze station. By investigating and addressing anomalies,it was determined that the observed data changes were caused by the grounding of the overhead conductors during wind power equipment maintenance. The underlying mechanism was analyzed,and a three-dimensional finite element model was developed to assess the impact of such interference on geoelectric resistivity at varying distances and with different observation devices. The results indicate that numerical simulations provide an effective distance to avoid this interference,and increasing the burial depth of electrodes can help mitigate its effects. The findings of this study offer valuable insights for the selection of observation station sites in wind power generation areas,the layout of observation devices,and the analysis of the impact of wind power equipment maintenance on geoelectric observations,including the tracking of data anomalies.