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Phase selection switching-in tester with breaker pre-breakdown model

A phase-selective closing and circuit breaker technology, which is used in circuit breaker testing, instrumentation, measurement of electricity, etc. There are no problems such as the performance test of the phase selection and closing controller

Active Publication Date: 2011-12-28
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]2. At present, there is no instrument that can test the performance of the phase selection closing controller
[0009] At present, there is no special instrument that can be used for the performance test of the phase selection closing controller, and there is no equipment that can be used as an auxiliary learning tool for the phase selection closing controller

Method used

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  • Phase selection switching-in tester with breaker pre-breakdown model
  • Phase selection switching-in tester with breaker pre-breakdown model
  • Phase selection switching-in tester with breaker pre-breakdown model

Examples

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Embodiment Construction

[0120] Working principle of the present invention:

[0121] 1) Circuit breaker pre-breakdown model

[0122] The schematic diagram of the movement of the dynamic and static contacts of the disc spring energy storage mechanism circuit breaker is shown in figure 1 . figure 1 Among them, moving contact 1, static contact 2, deformation spring 3.

[0123] Before closing operation, take FS 6 The disc spring of the circuit breaker as the insulating medium is in the state of compressed energy storage, and the moving and static contacts are in the separated position. After receiving the closing command, the spring energy storage mechanism of the circuit breaker releases energy, and the moving contact of the circuit breaker moves to the static contact at a speed of v (m / s) under the action of the spring pressure. Let FS 6 The gas insulation strength is Ed(kV / m), then the voltage ud(t) that can be withstood between the dynamic and static contacts of the circuit breaker is:

[0124] ...

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Abstract

The invention discloses a phase selection switching-in tester with a breaker pre-breakdown model, which mainly comprises a notebook computer, an industrial computer and a DSP5402 board. The invention provides the breaker model used for testing a phase selection switching-in controller, which can simulate a switching-in process of a breaker and the pre-breakdown of a fracture and simulate the influence of temperature variation and voltage transformation on the switching-in time of the breaker. The phase selection switching-in tester of the invention can serve as an auxiliary learning tool of aphase selection switching-in simulator so as to make the phase selection switching-in simulator meet design requirements when finishing a pre-learning process and being officially used for the first time and avoid inrush current impact on a reactive-load capacitor, and simultaneously is also used for detecting the performance of the selection phase switching-in controller.

Description

technical field [0001] The invention relates to an electronic instrument for testing a phase-selection closing controller, in particular to a phase-selection closing tester which not only has a testing function but also has a learning and training function. Background technique [0002] In the mid-1990s, foreign countries proposed the method of phase selection and closing. With the improvement of circuit breaker manufacturing technology, the dispersion of circuit breaker closing time is reduced. my country also uses phase selection closing technology in 500kV converter stations. The purpose is to solve the problem of capacitor components in 500kV AC filters and reactive power compensation capacitors The problem of high failure rate. [0003] The phase selection closing controller is used as the closing phase control of the circuit breaker, which is an intelligent circuit breaker opening and closing control technology. For line circuit breakers, selecting the appropriate clo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R31/327G06F17/50
Inventor 甄威刘明忠陈向宜向前
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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