直流GIL绝缘子表面电荷抑制方法的研究进展

Progress in Research of Surface Charge Suppression Method for DC GIL Insulators

绝缘子表面电荷的积聚是造成大型输电设备如直流气体绝缘输电线路(gas insulated transmission lines,GIL)绝缘性能下降的重要因素,研究如何有效抑制绝缘子表面电荷积聚具有重要的工程意义。而通过材料改性调控和抑制表面电荷积聚是目前较为普遍和有效的思路。该文从绝缘子表面改性、掺杂改性和其他改性3个主要的改性策略入手,综述了近年来通过材料改性调控表面电荷的最新研究进展,并对每种方法的优势和不足进行分析。最后,该文对未来通过材料改性来调控表面电荷积聚的研究方向进行展望。

The accumulation of surface charges on insulators is an important factor that causes the degradation of the insulation performance of large-scale power transmission equipment such as DC gas insulated transmission lines(GIL). The research on how to effectively suppress the accumulation of surface charges on insulators has important engineering significance. The control and suppression of surface charge accumulation through material modification is currently a common and effective method. Based on the three main modification strategies, i.e., surface modification, doping modification, and other modification, the latest research progress in surface charge regulation through material modification in recent years were reviewed, and the advantages and disadvantages of each method were analyzed. Finally, the future research direction of controlling surface charge accumulation through material modification was prospected.