桿塔混凝土接地用新型無腐蝕導電材料研究

中圖分類號：TQ178 文獻標志碼：A

文章編號：1001-5922（2025）07-0075-04

Research on new non-corrosive conductive materials for concrete grounding of pole towers

WANG Shijun，ZHANG Yongsheng，QIU Xiangke （State Grid Jibei Electric Power Co.，Ltd.，Chengde Power Supply Company，Chengde O67OOo，Hebei China）

Abstract：In order to improve the corrosion resistanceof the concrete grounding materials of the tower and ensure the safe and stable operation of wind power facilities in mountainous areas，anew type of non-corrosive conductive material suitable forthe concrete grounding ofthe tower was developed with cement，bentonitecomposite materials， stainless steel fiber，graphene and rare earth as the main materials，and its comprehensive performance was evaluated，and it was succesfullyapplied in the foundation grounding of the built wind turbines in a certain place.The results showed that the new non-corosive conductive materials for concrete grounding of the tower could significantly improve the conductivity，mechanical propertiesandanti-corrosion properties of concrete，and all comprehensive performance indexes could meet the requirements of relevant standards.Inthe field application process，theconcrete structure prepared bythenew non -corrosive conductive material had played a good role in reducing resistance，and the resistance reduction eficiency could reach up to 63.8% ，and the power frequency grounding resistance of each grounding device had reached the design value requirements.

Key words ： tower; power grid ; concrete ; grounding materials； corrosion performance

風能作為新能源，具有清潔、可再生、利用方便等多種優點，是各國利用的重點能源[1-3]。我國幅員遼闊，海岸線長，風能資源比較豐富，具備風力發電的基礎條件[47]。隨著我國風力發電技術的深入發展，輸變電工程的建設項目隨之增多。

然而在山區建設風電設施時會遇到各種難題，其中之一就是接地材料的腐蝕比較嚴重，接地裝置受到腐蝕的緣由多種多樣，電化學腐蝕以及吸氧腐蝕都會導致接地裝置受損，在污染環境嚴峻的場所中，接地裝置的腐蝕緣由主要是吸氧腐蝕[8-11]。目前，我國電網接地系統多采用熱鍍鋅鋼，但鍍鋅材料可以被酸和強堿溶解，只能適用于一般大氣和天然水環境中，而在工業污染區與高腐蝕地區，鍍鋅層的耐用年限很短，已不能滿足接地系統的安全使用要求。混凝土基礎的自然接地裝置，滿足接地電阻設計要求的關鍵是導電材料[12-14]。為了設施安全穩定運行、滿足環保要求以及施工的方便，對無腐蝕導電材料以及自然接地裝置進行有益的研究和探索，具有十分重要的現實意義[15-16]。本文在分析了目前山區桿塔基礎型式及經濟技術對比的基礎之上，開展了桿塔混凝土接地用新型無腐蝕導電材料的研究工作，并在目標區域已建風電機組基礎接地中進行了成功應用，為保障保證風電機組的安全穩定運行提供一定的技術支撐。

1桿塔混凝土基礎型式比選及經濟性分析

1.1 桿塔基礎型式