項目名稱：10kV 復合材料桿塔在農配網濕地中應用

　　完成單位：國家電網宣城供電公司

　　起止時間：2014 年 1 月 至 2015 年 1 月

　　項目負責人：劉功平

　　通信地址： 安徽省宣城市寶城路 160 號

　　郵政編碼：242000

　　聯系電話：0563-2818259

　　一、立項緣由

　　長期以來廣大農村電網，輸電線路架設主要采用混凝土電桿?；炷岭姉U的受力工況是很復雜的，混凝土為脆性材料，抗拉性能差，容易斷裂，尤其在河灘濕地在風和水的作用下導致內部鋼筋的銹蝕，

抵御自然災害能力差。水泥電桿體積重，在濕地和山區運輸、安裝、搶修困難。新型復合材料的技術發展為輸電線路桿塔技術革命帶來了新的機遇，新型復合材料電桿在機械性能、硬度和剛度都能取代傳統的鋼材和水泥電桿產品，在抗老化、耐腐蝕、抵抗自然災害、絕緣防雷、易設計、易運輸、易安裝等諸方面都先進于傳統的材料電桿。采用復合材料制造電桿以替代混凝土電桿的意義非常巨大。復合材料電桿具有很好的綜合性能，作為一種低碳、 節能、環保，符合國家綠色環保政策，符合國家電網輸電線路建設的 “兩型三新 ”指導方針。國家電網公司科技部《新技術推廣目錄》2014 版中在輸電線路桿塔結構章節中明確了該技術的推廣應用的要求。

　　二、工程簡況

　　結合農網改造工程，在安徽省宣城市貍橋鄉選擇 10kV 衛東 127線石馬支線使用復合材料桿代替傳統的水泥桿并開展應用研究。線路長度約二公里左右，線路跨越魚塘、立桿于養殖濕地，大檔距（120

米左右），其中直線桿 12 米桿 4 根，12 米直線耐張桿一根，12 米支線耐張桿一根，15 米直線桿一根，15 米終端桿一根。導線使用 95 鋼芯絕緣導線，氣候環境屬于 B 類。通過該項目，首次在我省農村配網中使用 10kV 新型復合材料電桿，并驗證了這一復合材料電桿的各種先進特點，體驗了其工程施工的便利和優點。項目符合《電氣裝置安裝工程 35kV 及以下架空電力線路施工及驗收規范》，并且通過驗收，合格。

　　三、工程體會

　　1、通過該項目積累了工程經驗，體會了完全不同材質的電桿在工程中應用。新型復合材料電桿是普通水泥桿 1/4 重量，易運輸、易安裝。由于它輕便不需要大型機械運輸吊裝，現場施工時 12 米的電桿二人便可扛走（短距離），四人可以抬走（長距離），六人便可以立起（不使用機械）。

　　2、選擇圩區濕地、水田、養殖田地形運輸安裝，目的是體驗該新型電桿的優越性，以便在施工機械、人工成本、青苗賠償等方面費用的減少。實踐證明復合材料電桿在濕地河灘、養殖水地中的應用，

減少了基礎施工難度，加快了施工進度，減少和避免民事糾紛及賠償。

　　3、河網、濕地區域雷電頻發區域，復合材料電桿由于它的本身絕緣性，可以抵消感應雷，大大減少雷擊災害引發的跳閘次數。

　　4、復合材料電桿由于它不生銹、不腐蝕、不脫落，在河網濕地中使用壽命長，機械性能不會應為長期風化、銹蝕而下降?？梢詼p少巡視和運維成本。

　　5、該電桿可設計性能強，其強度和抗彎性能好遠遠優于水泥桿，可實現大跨越。

　　6、由于復合材料重量輕，施工、運輸方便，減少了施工、運輸成本。

　　經過該項目的實施，使我們體會到新型復合材料電桿是新一代高品質、性能優良的電桿，將為電力輸電桿帶來革命性的進步，特別適應農村濕地灘涂、偏遠山區、環境惡劣、地質及自然災害頻發區。該電桿單桿價格比傳統水泥桿貴，但是從線路建設整體上看，通過優化、合理設計，抗自然災害和運維費用等綜合造價看價格應該是合理的。

Technological Project of Anhui Electric Power Company  

User Report

I.  Cause of Initiation

   The concrete poles are used for lots of rural grids and electric transmission line constructions for a long time, whose stress working conditions are complex. The concrete are fragile materials, with poor tensile property and easy breakage, especially the internal rebars will be eroded under the actions of wind and water in the benchland and wetland, with poor capacity to withstand the natural disasters. The weight of the concrete poles is heavy and thus it is difficult to transport, install and repair them in the wetland and mountainous areas.

   Technical development of new composite brings about new opportunity for the technical revolution of electric transmission line pole, whose mechanical property, hardness and rigidity can replace those of the traditional rebar and concrete poles and characteristics such as anti-aging, corrosion resistance, natural disaster resistance, insulation, thunder prevention, easy design, easy transportation and easy installation are more advanced than those of the poles made of the traditional materials. It is meaningful to manufacture the pole with the composite rather than the concrete.

   The composite pole has good comprehensive properties, such as low carbon, energy saving and environmental protection, which comply with the national green and environmental protection policies and guideline of "two-type and three-new" of the construction of national electric transmission line. The Technology Department of State Grid Corporation of China defined the requirements of promotion and application of this technology in Directory of New Technology Promotion (edition 2014).

II. Project Overview

    With combination of the rural power network transformation engineering, Liqiao Village, Xuancheng, Anhui selects to use the composite pole to replace the traditional concrete pole for 10kV Shima branch of Weidong No. 127 line and develops the application study. This line is about 2km long, crossing the fishpond. The pole is set up in the breading wetland, with the big span of about 120m, including four 12m straight poles, one 12m straight tension resistance pole, one 12m tension resistance pole of branch, one 15m straight pole and one 15m terminal pole. The 95 insulated wire with steel core is used, with the climate environment type of II.

It is the first time for this project to use the 10kV new composite pole in the rural distribution network in Anhui and various advanced characteristics of this composite pole are verified to experience the convenience and advantages of the project construction. The project complies with the Code for Construction and Acceptance of 35kV and under Overhead Power Levels Electric Equipment Installation Engineering and passes the acceptance and thus it is determined to be qualified.

III. Project Experience   

1. Through this project, the engineering experience is accumulated and the application of poles made of completely different materials to the engineering is experience. The weight of the new composite pole is 1/5 of that of the common concrete pole and it is easily transported and installed. Because it is light, it is unnecessary to be transported and hoisted with the large machine. When the construction is perform on site, two persons may shoulder a 12 pole for a short distance, four persons may shoulder it for a long distance and six persons may set it up by not using any machine.

2. The wetland, paddy field and breading field in the polder area are selected for選transportation and installation in order to experience the superiority of this new pole and reduce the costs of construction machine costs, labor costs and young crop compensation. The practice shows that the application of the composite pole to the wetland, benchland and breeding irrigated land reduce the foundation construction difficulty, accelerate the construction progress, reduce and avoid the civil disputes and compensation.

3. In the frequent thunder area in the river network and wetland area, the composite pole may offset the inductive thunder due to its insulativity, which may greatly reduce the trip times resulting from the lightning stroke disaster.

4. Because the composite pole is not rusted, corroded or fallen off, its service life in the river network and wetland is long and its mechanical property will not be reduced due to long-term weathering and corrosion, which reduces the inspection, operation and maintenance costs.

5. This pole has high designability and its strength and flexural property are better than those of the concrete pole, achieving long span.

6. Because the composite weight is light, it is easy to construct and transport it, reducing the construction and transportation costs.

The implementation of this project makes us realize that new composite pole is a new pole with high quality and excellent property, which will bring about revolutionary progress for the electric transmission pole. In particular, it is applicable to the rural wetland and mud flat, remote mountainous area and areas with harsh environment and frequent geological and natural disasters. The price of this pole is more expensive than that of the traditional concrete pole. However, as far as the overall line construction is concerned, its price is reasonable in terms of natural disaster resistance and operation and maintenance costs through optimization and reasonable design.