Abstract
Taking the high⁃voltage disconnector of the GW46 type as research object, this research first use Solidworks to build its three-dimensional simplified model, then use ABAQUS to simulate the mechanical characteristics of the disconnector over a wide temperature range, analyzing the influence of the clamping force between the dynamic and static contacts on temperature, the contact pressure between the dynamic and static contacts of the high⁃voltage disconnector of the GW46 type increases with the ambient temperature, and the contact pressure becomes smaller. Compared simulation results with experimental data, the error is less than 5%. Analysis shows that using the ABAQUS to simulation analysis of temperature rise of the high⁃voltage disconnector of the GW46 type, it can be determined that the contact pressure between the dynamic and static contacts changes with temperature. It avoids the complexity of the traditional theoretical calculation of query parameters and tedious calculations, and provides strong reference evidence for improving the reliability of the high⁃voltage disconnector of the GW46 type.
Highlights
High⁃voltage disconnector is the most widely used and most used high-voltage switchgear in the power grid, its usage is 2-4 times that of high-voltage circuit breakers[1,2]
It is necessary to carry out simulation research on the mechanical characteristics of key components, operating mechanisms, transmission mechanisms in a wide temperature range and combine products to conduct test verification
Using the finite element to study the mechanical characteristics of disconnectors, can the contact pressure between the dynamic and static contacts be changed with temperature, and to increase its useful life, avoid unplanned outages of high-voltage equipment, improve the reliability of grid operation
Summary
High⁃voltage disconnector is the most widely used and most used high-voltage switchgear in the power grid, its usage is 2-4 times that of high-voltage circuit breakers[1,2]. It is necessary to carry out simulation research on the mechanical characteristics of key components, operating mechanisms, transmission mechanisms in a wide temperature range and combine products to conduct test verification. The current research on high-voltage disconnectors mainly focuses on the cause of heating of the dynamic and static contacts[8,9]and its online monitoring[10,11], effect of mechanical vibration on deformation performance of high-voltage isolating switch[12], disconnector failure[13,14]and diagnosis[15], research on ultra-high and low temperature of isolating switch is still blank. Using the finite element to study the mechanical characteristics of disconnectors, can the contact pressure between the dynamic and static contacts be changed with temperature, and to increase its useful life, avoid unplanned outages of high-voltage equipment, improve the reliability of grid operation
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