In November 2017, the first±1100 kV high-voltage direct-current power transformer in the
world, which was made by Siemens in Nurnberg, passed its type test. Meanwhile, in early …

Introduction ower transformers are one of the most expensive elements in a power system,
and their failure is a very costly event. Power transformers are mainly involved in energy …

摘要为了研究变压器油纸绝缘老化的介电响应特征量, 本文对油纸绝缘试品进行了加速热老化,
并在老化的不同阶段开展了相同试验温度下的极化, 去极化电流(PDC) 和频域谱(FDS) 试验 …

为研究变压器油纸绝缘不同老化状态及温度对其频域介电谱(frequency domain spectroscopy,
FDS) 测量结果的影响, 对变压器油浸绝缘纸板试品进行加速热老化试验: 测量同一试品不同老化 …

摘要为了研究温度对变压器油纸绝缘介电响应测量结果的影响, 以更准确地评估纸板微水含量和
老化状态, 设计了在不同温度下对变压器油浸绝缘纸板试品分别进行时域回复电压(RV) …

为研究纸板劣化对其极化去极化电流(polarization and depolarization currents, PDC)
特性的影响, 在实验室内对油浸变压器绝缘纸板进行加速热老化, 在不同老化阶段取出纸板试品 …

The service life time of oil filled transformers is mainly dependent on its insulating system;
either the mineral oil or oil/paper insulation. Thermal aging of these transformer insulating …

Frequency domain spectroscopy (FDS) method based on dielectric response measurement
technique is being investigated as a potential tool for condition assessment of transformer …

Broadband Dielectric Spectroscopy (BDS) and Electrochemical Impedance Spectroscopy
(EIS) form types of non-destructive testing that allow to examine the dielectric response or …

High electric field and temperatures can result in electrical property degradation of oil-paper
insulation and accelerate its aging process. This paper describes the regulation of space …