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首页> 外文期刊>IEEE Transactions on Dielectrics and Electrical Insulation >Experimental study on ice-covered samples of composite material tower
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Experimental study on ice-covered samples of composite material tower

机译：复合材料塔冰覆样品的试验研究

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Ice accretion of overhead transmission composite tower is the most occurred and serious problem in power system. In order to decrease the icing effect, hydrophobic coatings are normally implemented on the surface of composite towers. This paper conducted a series of experiments on composite tower samples that coated with hydrophobic coatings of PRTV, IC701 and DS-02 respectively. Firstly, the adhesive force at the ice-coating interface was studied and the results indicated that PRTV leads the rank and has the lowest adhesion which is 20% less than pure aluminum sample and then it is closely followed by IC701. The experiment of coating effects on icing process illustrated that coated samples have insignificant thinner ice covering and less ice amount where DS-02 samples own the thinnest and IC701 samples own the minimum ice shedding time. Additionally, three icing flashover tests were carried out and it is found that IC701 and PRTV own much higher flashover voltage for both horizontally and vertically arrangement tests and vertical arranged samples have a higher discharge voltage than the horizontal arranged ones. Besides, it was observed that the discharging channel most occurs along the ice melting formed water flow path. The last experiment displayed that PRTV and IC701 coated samples have much better voltage resistance performances and the ice shedding time is shorter than the blank and DS-02 sample. In consequence, coatings for composite towers especially PRTV and IC701 can improve the icing flashover voltage to a certain extent and have an effective anti-icing characteristic.
机译：高架输电复合塔的积冰是电力系统中最常见，最严重的问题。为了降低结冰效果，通常在复合塔的表面上采用疏水涂层。本文对分别涂覆有PRTV，IC701和DS-02疏水涂层的复合塔样品进行了一系列实验。首先，研究了在冰涂层界面处的粘附力，结果表明PRTV居首位，具有最低的粘附力，比纯铝样品低20％，然后紧随其后的是IC701。涂层对结冰过程的影响实验表明，在DS-02样品拥有最薄的冰层和IC701样品具有最短的冰块脱落时间的情况下，涂层样品的冰层更薄且冰量更少。另外，进行了三个结冰闪络测试，发现IC701和PRTV在水平和垂直排列测试中都具有更高的闪络电压，垂直排列的样品具有比水平排列的样品更高的放电电压。此外，观察到排放通道大部分沿着融冰形成的水流动路径发生。最后的实验表明，PRTV和IC701涂层的样品具有更好的耐电压性能，并且结冰时间比空白样品和DS-02样品短。因此，复合塔特别是PRTV和IC701的涂料可以在一定程度上改善结冰闪络电压，并具有有效的防结冰特性。

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