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Method of predicting residual life of high-voltage switch product based on operation data

A technology for operating data and high-voltage switches, which is applied in electrical digital data processing, special data processing applications, instruments, etc., and can solve problems such as failure to solve the reliability evaluation of power switch products.

Inactive Publication Date: 2017-05-31
CHINA XD ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, experts at home and abroad have not yet solved the reliability evaluation of power switch products.

Method used

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  • Method of predicting residual life of high-voltage switch product based on operation data
  • Method of predicting residual life of high-voltage switch product based on operation data
  • Method of predicting residual life of high-voltage switch product based on operation data

Examples

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example

[0035] In this example, based on the statistical data of 363kV circuit breakers in a certain area, the reliability analysis of the target product is carried out. The specific operations are as follows:

[0036] Step 1: Collect relevant data: The data source of this reliability analysis is the survey data of a certain region / city circuit breaker and the system PMS record data. The data information includes the basic ledger of the circuit breaker, product type, organization form, operation time, failure / Defect occurrence time, fault / defect occurrence location, fault / defect technical reason, fault / defect handling method;

[0037] There are 411 pieces of valid data for 363kV circuit breakers. Among them, the longest operating time of the circuit breaker was 7949 days, the number of samples with the first failure was 113, and a total of 69 units failed for the first time and caused power outages for maintenance;

[0038] Step 2: Divide the collected data according to the data sou...

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Abstract

The invention discloses a method of predicting residual life of a high-voltage switch product based on operation data; the method comprises the steps of I, collecting basic data and operation data; II, sorting the operation data and establishing a database; classifying the collected data, and screening; III, testing distribution type of the classified data via one of slant test, likelihood ratio test, x<2> test and F test to determine an optimal distribution model; IV, performing parameter estimation and interval estimation for the distribution type selected in step III; V, drawing a reliability index curve for the high-voltage switch through the calculation results of step IV; predicting residual life of the high-voltage switch product according to the reliability index curve. The method allows the residual life of a high-voltage switch to be predicted accurately, and especially the reliability of electrical switch products can be analyzed according to different classes so as to guide the design, manufacture and usage processes of switch equipment.

Description

technical field [0001] The invention relates to the technical field of high-voltage switches, in particular to a method for predicting the remaining life of high-voltage switch products based on operating data. Background technique [0002] High-voltage switchgear refers to indoor and outdoor AC switchgear operating in a power system with a voltage above 3 kV and a frequency of 50 Hz or below. High-voltage switches are mainly used for the control and protection of power systems (including power plants, substations, power transmission and distribution, and users). When a fault occurs, the faulty part is quickly removed from the power grid, so as to ensure the normal operation of the equipment in the non-faulty part of the power grid and the safety of operation and maintenance personnel. Therefore, high-voltage switchgear plays a vital role in the safe and stable operation of the power system. With the increasing power demand in our country, the increasing scale of power equi...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06F17/30
CPCG06F16/245G06F16/2462G06F16/248G06F30/20Y02E60/00
Inventor 郑军骆虎武星成勇王瑜刘宇李劭頔
Owner CHINA XD ELECTRIC CO LTD
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