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Detecting method and device for electrical equipment fault

A technology of fault detection and electrical equipment, applied in the field of power grid, can solve problems such as unsafe operation of the power grid

Active Publication Date: 2017-01-11
ZHUHAI POWER SUPPLY BUREAU GUANGDONG POWER GIRD CO
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to address the problem of unsafe operation of the power grid, and it is necessary to provide a method and device for detecting electrical equipment faults that enable the safe operation of the power grid

Method used

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  • Detecting method and device for electrical equipment fault
  • Detecting method and device for electrical equipment fault
  • Detecting method and device for electrical equipment fault

Examples

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Embodiment Construction

[0026] see figure 1 , providing an embodiment of a fault detection method for electrical equipment, including the following steps:

[0027] S110: Obtain the electrical parameter analog input to the electrical equipment, and sample the electrical parameter analog according to the preset acquisition frequency, obtain a preset number of discrete data corresponding to the electrical parameter, and record the acquisition time corresponding to the discrete data acquisition point.

[0028] In the power grid system, it includes a variety of electrical equipment, such as feeder automation terminal (FTU), distribution network automation measurement and control terminal (DTU), boundary switch controller, microcomputer relay protection device and cable fault indicator, etc. These devices play a key role in quickly isolating grid faults, preventing accidents from expanding, improving power supply reliability, and ensuring safe and stable operation of the grid. In the process of fault det...

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PUM

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Abstract

The invention relates to a detecting method and device for electrical equipment fault, comprising the steps of performing interference detection for discrete data (i.e. detecting whether the default interference conditions are satisfied) to know whether the discrete data are interfered,updating the interfered discrete data in case of being interfered to ensure the accuracy of data, then undertaking the Fourier transform for discrete data to eliminate the interference component and obtain the fundamental wave component corresponded by the electrical parameter analog quantity, accurately calculating the effective value corresponded by electrical parameters according to the amplitude of fundamental wave component and obtaining the precise fault detection result according to accurate effective value, so as to improve the accuracy of fault detection,namely accurately judging whether the electrical equipment has faults and abnormalities. In case of faults, maintenance can be undertaken, so as to improve the safety of power grid operation.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a method and device for detecting electrical equipment faults. Background technique [0002] Distribution network automation terminal equipment is widely used in the market, including feeder automation terminal (FTU), distribution network automation measurement and control terminal (DTU), boundary switch controller, microcomputer relay protection device, and cable fault indicator. The rapid isolation of distribution network faults, the prevention of accident expansion, the improvement of power supply reliability and the safe and stable operation of the power grid play a key role. The above-mentioned distribution network automation terminal equipment needs to collect current and voltage and calculate the corresponding effective value, and then compare it with the set setting value to judge the fault and abnormal situation. The acquisition of current and voltage analog quantit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R23/16G01R31/00
CPCG01R23/16G01R31/00
Inventor 胡军胡小勇裴星宇谢干淼郭宗宝傅国强江俊鹏贺永佳曾庆标唐建军
Owner ZHUHAI POWER SUPPLY BUREAU GUANGDONG POWER GIRD CO
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