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Relay protection fault playback system

A technology of relay protection and fault recovery, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as deep-seated analysis obstacles, achieve low power consumption, small amount of calculation, ensure reliability and rapidity Effect

Inactive Publication Date: 2018-08-14
CHENGDU TENGDA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The fault recording data is sampled at high speed, and the comprehensive analysis of the recording data generated by different devices puts forward high requirements on the clock accuracy, which creates obstacles for in-depth analysis

Method used

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  • Relay protection fault playback system
  • Relay protection fault playback system
  • Relay protection fault playback system

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Experimental program
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Effect test

Embodiment Construction

[0046] figure 1 It shows a relay protection fault playback system of the present invention, the system includes an intelligent wave recording terminal 1 and a wave recording analysis and playback device 2;

[0047] This intelligent wave recording terminal 1 comprises:

[0048] Waveform acquisition module 11, used for real-time acquisition of waveform information of electrical equipment;

[0049] Data conversion module 12, is used for converting waveform information into waveform data in real time;

[0050] A data compression module 13, configured to compress the waveform data;

[0051] The wave recording data sending module 15 is used to send the compressed wave data to the wave recording analysis and playback device through the wireless communication network;

[0052] The terminal control module 14 is used for the work of each module in the intelligent wave recording terminal;

[0053] Described wave recording analysis and playback device 2 comprise:

[0054]The wave rec...

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Abstract

The invention discloses a relay protection fault playback system. The system adopts a data compression module, is based on a front and back waveform difference compression algorithm with a characteristic of waveform periodicity, has the characteristics of low power consumption, small calculated amount and high compression ratio, has a better waveform data compression effect, and more greatly reduces the production cost of a relay protection fault record and playback system; the system performs modeling on electrical power system primary equipment on the basis of fault wave recording data, relates a primary equipment model with a wave recording channel in a fault wave recording data file to obtain a wave recording analysis model, and when a fault occurs, waveform aligning is conducted on multi-wave recording data according to mutation characteristics of a voltage and current; the system respectively extracts fault wave recording data in a period of time before and after the fault momentfrom each fault wave recording file, the primary equipment is taken as a unit, the calculation of a fault characteristic value of each primary equipment element is carried out to form intermediate data, thereby overcoming the own limitation of the fault wave recording file.

Description

Technical field [0001] The invention relates to the field of relay protection, in particular to a relay protection fault playback system. Background technique [0002] At present, my country's power system fault recording is developing rapidly. It can automatically and accurately record the changes of various electrical quantities before and after the fault, record the whole process of system frequency changes, and record transient information. Through the recording of these information Provide a certain reference value for the cause of power failure. The oscilloscope is a recording device independent of protection. It can truly reflect the accident situation by recording analog and switching values. It is the most effective tool for judging the development process of the accident. [0003] Fault recording automatically and accurately records the changes of various electrical quantities (mainly digital quantities, such as switch state changes, analog quantities, mainly voltag...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 滕维
Owner CHENGDU TENGDA SCI & TECH