DC pollution flashover performance of HVDC composite insulator under different non-uniform pollution conditions

X Qiao, Z Zhang, X Jiang, R Sundararajan… - Electric Power Systems …, 2020 - Elsevier
The non-uniform air flow field and electrical field distributing around insulators cause
uneven deposition of pollution particles on different positions and parts of the insulator …

AC flashover performance of different shed configurations of composite insulators under fan‐shaped non‐uniform pollution

Z Zhang, X Qiao, Y Zhang, L Tian, D Zhang… - High voltage, 2018 - Wiley Online Library
Currently, it is founded that under unidirectional wind and certain landform, composite
insulators are always fan‐shaped non‐uniformly polluted. In this paper, artificial pollution …

Application of grey theory in pollution prediction on insulator surface in power systems

X Qiao, Z Zhang, X Jiang, Y He, X Li - Engineering Failure Analysis, 2019 - Elsevier
Pollution-induced flashover is critically affecting the safety operation of the power system so
as to puts social production at risk. However, few literatures have predicted insulator …

Non-uniform distribution of contamination on composite insulators in HVDC transmission lines

Z Zhang, X Qiao, S Yang, X Jiang - Applied Sciences, 2018 - mdpi.com
Featured Application The proposed pollution non-uniformity coefficient K provides guidance
for insulation design and field anti-pollution works, which helps prevent the occurrence of …

Simulation study on pollution accumulation characteristics of XP13-160 porcelain suspension disc insulators

Y Lv, J Li, X Zhang, G Pang… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
The mechanical mechanism of pollution accumulation on XP13-160 porcelain suspension
disc insulators was analyzed, and a discriminant for the deposition on the insulator surface …

Study on natural contamination performance of typical types of insulators

Z Zhang, D Zhang, X Jiang, X Liu - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
As natural contamination of insulators may lead to flashover, its determining factors should
be studied to prevent the occurrence of pollution flashover. In this paper, the fluid mechanics …

Investigations on AC pollution flashover performance of insulator string under different non‐uniform pollution conditions

Z Zhang, J You, D Wei, X Jiang… - IET Generation …, 2016 - Wiley Online Library
Observations of contamination tests showed that, the contamination distribution of insulators
is usually uneven. In this study, the solid layer method was used to imitate different non …

Comparison of surface pollution flashover characteristics of RTV (room temperature vulcanizing) coated insulators under different coating damage modes

Z Zhang, X Qiao, Y **ang, X Jiang - IEEE Access, 2019 - ieeexplore.ieee.org
In recent years, room temperature vulcanizing (RTV) coated insulators have been
increasingly applied in transmission lines. A large number of RTV coating damages on …

Distribution Characteristics of Wind Pressure on the Insulator Surfaces under Strong Airflow

S Yue, Z Zhang, G Pang, S Yang… - IEEE Sensors Journal, 2024 - ieeexplore.ieee.org
The special external structure of insulators leads to uneven wind pressure distribution
(WPD) around them, sometimes even forming negative pressure. Negative pressure …

Analysis of in-service composite insulators used in overhead railway traction

BS Reddy, PC Ramamurthy - Engineering Failure Analysis, 2020 - Elsevier
Polymeric based Composite insulators are extensively used for overhead rail electric
traction system; these insulators play an important role in the traction electrification which …