本文選題：復(fù)合材料桿塔 + 多因子老化試驗(yàn)��； 參考：《電工技術(shù)學(xué)報(bào)》2017年19期

【摘要】：復(fù)合材料桿塔在實(shí)際運(yùn)行中受到高濕、高低溫、紫外線、雨水和電場(chǎng)等多種因素的侵蝕老化,同時(shí)導(dǎo)線在風(fēng)力作用下的振動(dòng)也會(huì)造成桿塔應(yīng)力疲勞老化。為全面評(píng)估復(fù)合材料桿塔的運(yùn)行可靠性和耐老化特性,結(jié)合我國(guó)桿塔實(shí)際運(yùn)行環(huán)境,在IEC 5 000 h多因子老化試驗(yàn)方法的基礎(chǔ)上進(jìn)行改進(jìn),首次對(duì)復(fù)合材料桿塔開展人工加速老化試驗(yàn),并通過在桿塔表面植入光纖光柵傳感器實(shí)時(shí)監(jiān)測(cè)桿塔應(yīng)變。試驗(yàn)前,通過有限元力學(xué)仿真確定光纖光柵傳感器在桿塔上的植入部位;試驗(yàn)中通過加裝振動(dòng)裝置模擬風(fēng)力對(duì)桿塔的影響。對(duì)桿塔應(yīng)變數(shù)據(jù)進(jìn)行分析,結(jié)果顯示:紫外和高熱高濕環(huán)境對(duì)桿塔應(yīng)變有較大影響;經(jīng)過5 000 h人工加速老化試驗(yàn)后,桿塔應(yīng)變變化幅度小,桿塔未出現(xiàn)明顯缺陷,表明復(fù)合材料桿塔可在戶外長(zhǎng)期運(yùn)行。
[Abstract]:Composite tower is subjected to high humidity, high temperature, ultraviolet radiation, Rain Water, electric field and other factors in actual operation, and the vibration of conductor under wind force will also cause stress fatigue aging of the tower. In order to comprehensively evaluate the reliability and aging resistance of composite tower, combined with the actual operating environment of the tower in China, the method of IEC 5000 h multi-factor aging test was improved. The artificial accelerated aging test was carried out for the composite tower for the first time, and the strain of the tower was monitored in real time by inserting fiber Bragg grating sensor on the surface of the tower. Before the test, the placement of fiber Bragg grating sensor on the tower is determined by finite element mechanical simulation, and the influence of wind force on the tower is simulated by adding vibration device in the experiment. By analyzing the strain data of the tower, the results show that UV and high heat and high humidity environment have great influence on the strain of the tower, and after 5 000 h artificial accelerated aging test, the strain change of the tower is small and there is no obvious defect in the tower. The results show that the composite tower can be operated outdoors for a long time.
【作者單位】： 武漢大學(xué)電氣工程學(xué)院;國(guó)網(wǎng)湖北省電力公司荊州供電公司;
【分類號(hào)】：TM75

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