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Vacuum circuit breaker electrical endurance monitoring apparatus

A vacuum circuit breaker and monitoring device technology, applied in circuit breaker testing, emergency protection devices, circuits, etc., can solve problems such as life monitoring of vacuum circuit breakers and difficulty in testing and breaking large currents.

Inactive Publication Date: 2005-09-28
张贵新 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, due to the difficulty of testing and breaking large currents under the condition of strong electromagnetic interference, only a few units have made some theoretical demonstrations at present, but have not yet developed a specialized device for monitoring the electrical life of vacuum circuit breakers.

Method used

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  • Vacuum circuit breaker electrical endurance monitoring apparatus
  • Vacuum circuit breaker electrical endurance monitoring apparatus
  • Vacuum circuit breaker electrical endurance monitoring apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0026] This embodiment is a vacuum circuit breaker electrical life monitoring device with a three-way signal acquisition unit that can monitor the electrical life of a three-phase vacuum circuit breaker at the same time. It is composed of an industrial computer I, an on-site control unit II, and a sensor III. figure 2 As shown (each part is separated by a dotted line frame), the specific components and functions are as follows:

[0027] 1. Industrial computer I: the present embodiment adopts the IRA360 type industrial computer, which is located in the control room as the upper computer, and collects the relevant vacuum circuit breaker electrical service life uploaded by each local control unit (2) (up to 128) through the communication cable information, carry out corresponding data storage and display, and upload the early warning information to the remote information center IV (the information center IV part does not belong to the content of the present invention).

[0028] ...

Embodiment 2

[0033] The detection principle and main devices used in this embodiment are basically the same as those in Embodiment 1. The main difference is that only a current sensor and an on-site control unit are installed at the main switch (S) at the busbar to detect the current flow through the circuit breaker there. The fault current of each load switch (S1, S2, ..., Sn) is no longer installed at the current sensor and the local control unit, and combined with the action of the switch uploaded by the switch state detection circuit (such as S1 action), the final is located at The industrial computer in the control room judges and calculates the electrical life of each switch and stores, displays and uploads.

[0034] The specific components and functions of this embodiment, such as image 3 Shown:

[0035]1. Industrial computer: IRA360 industrial computer is used in this embodiment.

[0036] 2. Local control unit: the basic functions are the same as those in Embodiment 1, but the e...

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Abstract

The present invention relates to electric life monitor for vacuum circuit breaker and belongs to the field of current measuring technology. The electric life monitor for vacuum circuit breaker includes current sensor set beside the bus serially connected to the vacuum circuit breaker or beside its secondary current loop and A / D converter and data processor, which constitute in-site single channel or multiple channel control unit connected via transmission cable to industrial control computer. The present invention may be used in real-time on-line monitoring of vacuum circuit breaker, and the residual life may be obtained via monitoring and some warning signal may be sent out for timely processing.

Description

technical field [0001] The invention belongs to the technical field of current measurement, in particular to the structural design of a vacuum circuit breaker electric life monitoring device. Background technique [0002] Vacuum circuit breaker is a new type of electrical equipment that has developed rapidly in the past ten years. Compared with traditional oil circuit breakers, it has many advantages, such as no explosion, no pollution, long inspection-free period, frequent operation, small contact gap, small size, light weight, no arc exposure, long life, etc. Advantages, it has gradually become the main switchgear in the medium voltage distribution system. [0003] Long service life is a notable feature of vacuum circuit breakers. Its service life is a combination of mechanical life and electrical life. Its mechanical life refers to the number of opening and closing cycles of the circuit breaker under no-load or rated long-term light load, focusing on the ability of mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327H01H71/00
Inventor 张贵新王圈赵来红罗承沐
Owner 张贵新
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