2022-08-15
2020-07-23
Due to the electrostatic adsorption of the DC line, the pollution level of the DC line is higher than that of the AC line under the same conditions. The number of insulators required is also greater than that of the AC line. Its insulation level is mainly determined by the pollution discharge characteristics of the insulator string. Therefore, at present, there are two main methods for selecting the number of insulators:
Of the two methods, the former is intuitive, but it requires a large number of tests and test data, and the results of tests are widely dispersed. The latter is simple and easy, but the accuracy is poor. In practice, this two methods are usually combined to perform.