Online electric abrasion detecting method and system of vacuum circuit breaker

A vacuum circuit breaker and detection method technology, applied in the direction of circuit breaker testing, etc., can solve the problems of lack of systematic theoretical basis, low monitoring precision and accuracy of electric wear online detection and diagnosis system, and no theoretical and calculation basis

What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A vacuum circuit breaker and detection method technology, applied in the direction of circuit breaker testing, etc., can solve the problems of lack of systematic theoretical basis, low monitoring precision and accuracy of electric wear online detection and diagnosis system, and no theoretical and calculation basis

CN102879735AActive Publication Date: 2013-01-16GUILIN UNIV OF ELECTRONIC TECH

8 Cites 18 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.

Viewing Examples

Smart Image

Examples

Experimental program

Comparison scheme

Effect test

Embodiment Construction

[0045] Below in conjunction with specific example, the present invention is described in detail:

[0046] The main feature of the vacuum circuit breaker is that it can safely and repeatedly break the short-circuit current without the need to overhaul its breaking element (interrupter), or replace it after reaching a certain level, that is, the breaking capacity without maintenance. The vacuum interrupter is a non-removable maintenance component, so the vacuum circuit breaker and assembly cabinet equipped with a vacuum interrupter need an electrical life test; domestic and foreign manufacturers perform a series of experiments to determine the electrical life of their products to enhance their competitiveness . image 3 Shown is the typical electrical life characteristic curve of ABB’s VD4 vacuum circuit breaker, indicating that the vacuum circuit breaker operates at different rated currents I n Below, the relationship between breaking current and breaking times:

[0047] N i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

PUM

Login to View More

Abstract

The invention discloses an online electric abrasion detecting method and system of a vacuum circuit breaker. The online electric abrasion detecting system comprises three current transformers, a current signal conditioning unit, a digital-to-analogue conversion unit, three electric arc property probers, an electric arc signal conditioning unit, an arc time pre-treatment unit, an on-off frequency counting pre-treatment unit, a central processing unit, a local alarming unit and a power supply unit. By improving the forecasting and the selection of an online detection actual parameter of electric service life in an on-off current weighting accumulation method, the influence caused by a wider parameter selection range in an estimation and calculation process according to experience data, particularly large result deviation caused by single abrasion amount accumulation by an on-off current index, can be overcome.

Description

technical field [0001] The invention relates to the field of on-line monitoring of electric switchgear, in particular to an on-line detection method and system for electrical wear of a vacuum circuit breaker. Background technique [0002] With the planning and application development of smart grid technology, the demand for smart equipment and related technologies in smart distribution network is increasing. In the power system, the circuit breaker is the safety guard to ensure the normal and stable operation of the system, and it plays a dual role of control and protection in the system. With the development of technology and application requirements, the intelligent research and application technology of power high-voltage switches has received high attention from system operators and scientific researchers. The development and application of intelligent switches has become a current research hotspot. In the past, the detection and fault diagnosis of the electrical wear o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

Application Information

Patent Timeline

16 Jan 2013

Publication

CN102879735A

IPC: G01R31/327

Inventors: 范兴明; 张鑫