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摘 要:絕緣子作為輸電線路中的絕緣和支撐部件,在電力網(wǎng)絡(luò)中具有非常重要的作用,而且隨著我國(guó)電力輸電行業(yè)的大規(guī)模發(fā)展,高寒地區(qū)的輸電是不可避免的問(wèn)題，因此絕緣子的覆冰閃絡(luò)問(wèn)題已經(jīng)成為電力行業(yè)急需解決的問(wèn)題之一。 本文以人工實(shí)驗(yàn)為基礎(chǔ),通過(guò)對(duì)覆冰絕緣子閃絡(luò)發(fā)生原因的分析，發(fā)現(xiàn)影響覆冰絕緣子閃絡(luò)的因素有絕緣子所在位置的氣壓、冰水的電導(dǎo)率、絕緣子的污穢度（ESDD）和絕緣子的串長(zhǎng)，因此以實(shí)驗(yàn)室得到關(guān)于LXZP-160型絕緣子的覆冰試驗(yàn)的數(shù)據(jù)為依據(jù)，利用徑向基神經(jīng)網(wǎng)絡(luò)（RBF）建立了覆冰絕緣子最低閃絡(luò)電壓的預(yù)測(cè)模型。通過(guò)誤差分析表明，該模型能夠?qū)崿F(xiàn)覆冰絕緣子最低閃絡(luò)電壓的預(yù)測(cè)，反映出覆冰水電導(dǎo)率、氣壓、ESDD和絕緣子串長(zhǎng)與覆冰絕緣子最低閃絡(luò)電壓之間的非線性關(guān)系，對(duì)電力行業(yè)關(guān)于覆冰絕緣子外絕緣設(shè)計(jì)和預(yù)防閃絡(luò)具有一定的參考價(jià)值。 關(guān)鍵詞：覆冰；絕緣子；徑向基神經(jīng)網(wǎng)絡(luò) ；閃絡(luò)電壓； 污穢
ABSTRACT:Insulators as a special insulated control, in the transmission line has a very important role in the development of non-stop as the power transmission industry, the transmission of the alpine region is particularly important, therefore insulator the icing flashover problem has become the power industry inevitable and urgent problem. In this paper, the study of the manual test methods for the analysis of the causes of ice-covered insulators flashover occurs, insulators, initially been the icing insulator flashover the risk factors for the air pressure of the insulator location, the conductivity of overlying ice water, insulators contamination degree (ESDD) and insulator string length, artificial climate chamber about LXZP-160-insulator icing test data obtained by laboratory Finally, use the RBF neural network (RBF) in MATLAB establishment of a follow-Iced Insulators minimum flashover voltage of predictive models. Error analysis, the initial realization of the prediction of the minimum flashover voltage of ice-covered insulators, the model can reflect the overlying ice water conductivity, pressure, ESDD and insulator string length and minimum flashover voltage of ice-covered insulators between a nonlinear the relationship between the electricity industry forecast on ice-covered insulators flashover voltage has a certain role. Keywords: Iced Insulator；RBF network；Flashover voltage；Artificial test；Pollution |
