Effects of Wind Velocity on Contamination of HV Insulators in Winter Conditions

Abstract

An experimental setup has been developed to simulate the road salt deposit process on energized high voltage insulators under one set of winter conditions. The variation in accumulation rate of salt deposit density (SDD) with wind speed was established through systematic laboratory investigations. Tests were made with and without normal ac line voltage stress to explore the combined effect of wind and dielectrophoresis.

Analysis of Natural Pollution Accumulation Characteristics of Insulators for Railroads in High-Altitude Environment

“…Three results show that wind speed and wind direction have a significant effect on the pollution distribution on the top and bottom surfaces of an insulator. Ravelomanantsoa et al [3] built a test setup to simulate winter conditions and discussed the effects of wind and AC voltages on the variation in the accumulation rate of the salt deposit density (SDD) of insulators. Qiao et al [4] simulated the pollution accumulation process of insulators by CFD software Ansys 15.0 and studied the pollution distribution of insulators with different shapes.…”

Contamination characteristics of disc‐suspension insulator of transmission line in wind tunnel

“…In [16,17], through a wind tunnel of 1 m × 1 m cross-section, the effect of wind speed on high voltage insulator contamination under charged case in winter was studied. The relationship between insulator contamination rate and wind speed is relatively close and with the increase of wind speed, the salt deposit density (SDD) will increase.…”

Influence factors in contamination process of XP‐160 insulators based on computational fluid mechanics

“…The changing of wind velocity can bring big impact on the flow field and then change the contamination degree of insulators. Ravelomanantsoa et al [13] carried out experiment to study the effects of wind velocity on contamination of high‐voltage insulators. It has been found that the salt deposit density on top and bottom surfaces is increased with the rising of wind velocity.…”