A calibration method for the seismic ultimate bearing capacity parameters of composite casings in substations

Abstract

The invention relates to a transformer substation composite material bushing anti-seismic limit bearing capacity parameter calibration method comprising the steps that seismic simulation vibration table testing and quasi-static bending resistance testing are performed on the first batch of products of composite material bushings so that anti-seismic limit bearing capacity Mse and anti-bending limit bearing capacity Mst are respectively obtained; the conversion coefficient r is calculated through the anti-seismic limit bearing capacity Mse and the anti-bending limit bearing capacity Mst; quasi-static bending resistance testing is performed on the products of the composite material bushings apart from the first batch of products so that anti-bending limit bearing capacity Mst' is obtained; and anti-seismic limit bearing capacity Mse' is obtained through the conversion coefficient r. The technical scheme has practical importance on anti-seismic performance detection of the composite material bushings.

Description

Technical field: [0001] The invention relates to the technical field of anti-seismic performance testing of high-voltage electrical equipment, and more particularly relates to a method for calibrating the anti-seismic ultimate bearing capacity parameters of composite material bushings in substations. Background technique: [0002] Traditional high-voltage electrical equipment bushings in substations are made of electric porcelain, which is easily damaged in earthquake events due to its brittle properties. Composite casing is a substitute product for porcelain casing, which is bonded by resin-based glass fiber composite casing and metal end piece through epoxy resin colloid. Due to the good mechanical properties of glass fiber composite materials, composite casings are considered to have good seismic performance and are preferred for substations in high-intensity areas. [0003] In engineering seismic design, the ultimate bearing capacity of components under seismic load is ...

AI Technical Summary

Problems solved by technology

[0006] (2) A single test is expensive, and related test items are difficult to promote

[0007] Due to the high cost of a single earthquake simulation shaking table test, and the low popularity of related test equipment, only some professional seismic test research units have the conditions, and general electrical equipment manufacturers and testing units do not have relevant test conditions.

In this case, the earthquake simulation shaking table test method can only be used in the type test, and it is difficult to promote it in the random inspection link

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