A method and components for detecting the shock resistance of ceramic bushings of main equipment in UHV substations

Abstract

The invention provides an ultrahigh voltage transformer substation main equipment porcelain bushing shock resistance detection method and component. The method comprises the steps that earthquake time-process waves used for detection are determined; and a tested porcelain bushing is detected according to the detection condition and the detection target, and the detection environment of the tested porcelain bushing is adjusted and shock resistance of the tested porcelain bushing is judged. The component comprises a displacement sensor, acceleration sensors, strain gauges and a bracket which is arranged on an earthquake test table. According to the method and the component, a set of shock resistance assessment system aiming at the ultrahigh voltage transformer substation main equipment porcelain bushing is clearly and completely constructed, and the pre-test, test and post-test operation process of the tested porcelain bushing is meticulously and efficiently detected so that shock resistance assessment capacity of the ultrahigh voltage porcelain bushing can be effectively and reliably enhanced, and safety and effectiveness of the porcelain bushing in the actual engineering application can be enhanced. The method and the component are elaborate and rigorous in structure and high in operability and have extremely high popularization condition.

Description

technical field [0001] The invention relates to the field of detection of porcelain bushings for main equipment of UHV substations, in particular to a method and components for detecting the shock resistance of porcelain bushings for main equipment of UHV substations. Background technique [0002] With the rapid development of power grid construction, UHV power grid will gradually become the backbone grid of my country's power grid, and all fields of society will rely more and more on it. Compared with substation equipment with conventional voltage levels, UHV equipment has the structural characteristics of "heavy, large, high, and soft". The so-called "heavy" means that the weight of the equipment is relatively large. Taking UHV arresters as an example, The weight can be as high as 10 tons or even higher; "big" refers to the huge size of the equipment; "high" refers to the height of the equipment, which can be as high as more than ten meters; The superior frequency is very...

AI Technical Summary

Problems solved by technology

[0004] (1) Transformer and reactor bushing damage;

[0005] (2) The bottom of the transformer and reactor slips and falls

As for UHV electrical equipment, the State Grid Corporation of China's enterprise standard "Technical Regulations for Seismic Design of UHV Porcelain Insulated Electrical Equipment and Installation and Maintenance of Shock Absorbing Devices" (Q / GDW 11132-2013) has made relevant regulations, but there is no specification for main equipment porcelain The method for evaluating the seismic performance of casing has no regulations on the selection of specimens, the installation method of casing test, the selection of input wave, the design scheme of working conditions, the layout scheme of measuring points, the processing criteria of test results, and the evaluation criteria of test results. The anti-seismic performance evaluation system of ceramic bushings for main equipment of UHV substations

Images