改进 20kV 及以下套管结构降低对变压器局部放电测量的干扰

Reducing Interference with PD Measurement of Transformer by Improvement on 20kV and below Bushing Structure

对２０ｋＶ及以下电压等级的套管进行了结构改进，以降低对变压器局部放电测量的干扰，并用实例验证了改进措施的可行性，给出了试验数据。

An improvement on 20kV and below bushing structure is made for reducing interference with PD measurement of transformer. The feasibility of improving measures is also tested through practical performance. The test data are given here.