柔性直流电缆及附件系统型式试验设计方法

摘要

为满足国内柔性直流输电工程对于电缆及附件产品试验评估的要求，以 XLPE 电缆在直流电场中的极性反转、长时间效应及不同外施电场下的畸变情况等相关研究为基础，建立了完善的高压直流电缆及附件的评估方法和试验系统，为此，结合±160 kV 南澳柔性直流输电工程的要求完成电缆及附件产品型式试验的项目设计，搭建试验回路并选取参数进行型式试验，最终验证相应直流电缆及附件产品质量满足工程需求。%In order to satisfy demand of flexible direct current(DC)engineering for test evaluation on cables and its accessory products,a complete evaluation method and test system for high voltage DC cables and accessories was established based on research on polarity inversion ,long-term effects and distortion under different electric fields of cross-linked polyethylene (XLPE)cable in DC electric field.Combining demand of ± 160 kV Nan’ao flexible DC power transmission engineering, project design of type test on cables and accessory products was finished,test circuit was constructed and parameters were se-lected for type test.It was verified that qualities of DC cables and accessory products could meet requirements of the engi-neering.