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High voltage circuit breaker synchronism testing device and method based on abrupt change of vibration energy

A high-voltage circuit breaker and vibration energy technology, which is applied in the direction of circuit breaker testing, measuring devices, and electrical devices, etc., can solve the problem of insignificant phase-to-phase closing and other issues

Inactive Publication Date: 2016-06-15
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] a. Phase-to-phase non-synchronization is not greater than 5ms;

Method used

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  • High voltage circuit breaker synchronism testing device and method based on abrupt change of vibration energy
  • High voltage circuit breaker synchronism testing device and method based on abrupt change of vibration energy
  • High voltage circuit breaker synchronism testing device and method based on abrupt change of vibration energy

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Embodiment 1

[0055] Verification Example 1: In the laboratory, a 10kV vacuum high-voltage circuit breaker is used as an example for data collection. The vibration signal collection is realized by a three-axis piezoelectric acceleration sensor, which is fixed on the high-voltage circuit breaker by M5 bolts. On the base of the circuit breaker, the final 9-channel signals are collected and summarized by the dynamic signal synchronization acquisition card, which has flexible channel configuration.

[0056] Using the X-axis output of one of the vibration sensors (consistent with the moving direction of the moving contact) as the trigger signal, the high-speed, high-resolution synchronous acquisition card acquires the vibration signal during the operation of the circuit breaker. The acquisition card adopts the medium trigger mode and can acquire There are enough vibration data before and after opening and closing. These data include the energy change during the movement of the moving contact of th...

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Abstract

A high-voltage circuit breaker synchronism detection device based on vibration energy mutation, including: three vibration sensors, fixedly installed on the three phase-separated operation bases of the high-voltage circuit breaker; / D conversion module and anti-aliasing filter module, the synchronous high-speed A / D conversion module receives the output of the three vibration sensors respectively; the signal analysis and processing module and the diagnosis conclusion output module connected in sequence, the signal analysis and processing module input synchronous acquisition The card's anti-aliasing filter module output and diagnosis conclusion output module are also externally connected to a contemporaneous index database. The invention also relates to a method for using the device to perform synchronous on-line detection of high-voltage circuit breakers. Since the present invention adopts real-time vibration data, and carries out the calculation of synchronous parameters and the determination of potential failures, it can effectively and more accurately obtain the synchronous index of the high-voltage circuit breaker without power failure, and improves the operating efficiency of the high-voltage circuit breaker itself and reliability.

Description

technical field [0001] The invention relates to an on-line synchronous detection device for a high-voltage circuit breaker, in particular to an on-line synchronous detection device for a high-voltage circuit breaker based on sudden changes in vibration energy. The invention also relates to a method for using the device to perform synchronous on-line detection of high-voltage circuit breakers. Background technique [0002] High-voltage circuit breaker is a high-current breaking device with arc-extinguishing function. It shoulders the dual tasks of control and protection of the power system, and is an indispensable electrical equipment for power plants and substations. With the development of condition-based maintenance of electrical equipment, the technical requirements for synchronous online diagnosis of high-voltage circuit breakers are getting higher and higher. [0003] The three-phase asynchronicity of the high-voltage circuit breaker refers to the maximum time differen...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01H11/08
CPCG01R31/3272G01H11/08
Inventor 谭金刘石高庆水蔡笋张楚杨毅徐广文邓少翔金格姚泽杜胜磊李力朱誉陈哲
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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