Fault traveling wave locating device for power line

A fault traveling wave and locating device technology, applied in directions such as the fault location, can solve the problems of the complex structure of the current traveling wave ranging device, the reduction of sampling rate positioning accuracy, and the large amount of data, so as to reduce the probability of wiring errors and the workload. , The effect of saving control room area and low cost

Inactive Publication Date: 2013-01-23
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the existing current traveling wave ranging device complex in structure and high in cost
Due to the large amount of collected data and the number of channels, the sampling rate positioning accuracy is greatly reduced due to this limitation

Method used

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  • Fault traveling wave locating device for power line
  • Fault traveling wave locating device for power line
  • Fault traveling wave locating device for power line

Examples

Experimental program
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Embodiment Construction

[0015] like Figure 1-2 As shown, a traveling wave locating device for a power line fault includes a traveling wave distance measuring device, an oscilloscope and a background computer, the traveling wave distance measuring device and the oscilloscope are connected to the background computer through an Ethernet, The device and oscilloscope communicate with GPS. The traveling wave distance measuring device may be a current traveling wave distance measuring device or a voltage traveling wave distance measuring device.

[0016] Preferably, the traveling wave distance measuring device is a voltage traveling wave distance measuring device, comprising a switch value acquisition board, a voltage conversion board, a high-speed acquisition board, a PC and an alarm output board; the output of the switch value acquisition board and the voltage conversion board The terminal is connected to the input terminal of the high-speed acquisition board, the output terminal of the high-speed acqui...

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PUM

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Abstract

The invention discloses a fault traveling wave locating device for a power line, relating to the technical field of protection devices of power systems. The fault traveling wave locating device for the power line comprises a traveling wave ranging device, an oscillograph and a background computer, wherein the traveling wave ranging device and the oscillograph are connected with the background computer through an Ethernet, and the traveling wave ranging device and the oscillograph are communicated with a GPS (global positioning system). Due to the combination of the fault recording function and the traveling wave locating function, the locating device can locate the fault accurately; and the traveling wave ranging device and the oscillograph are integrated into one screen cabinet from the original two individual screen cabinets, so that the device size can be reduced, the area of a control room can be reduced, the installation and commissioning process can be simplified, a secondary loop cable can be wired simply, the wiring error probability and the workload can be reduced, the shared equipment can be saved in hardware, and the fabrication cost is low.

Description

technical field [0001] The invention relates to the technical field of power system protection devices, in particular to a traveling wave location device for power line faults. Background technique [0002] At present, traveling wave distance measuring devices for power line faults generally use current traveling waves for fault location, and directly extract the sudden signal of the current traveling wave head from the secondary side of the current transformer. This positioning method requires a high-speed data acquisition device with massive data storage and a high-performance computer device capable of complex wavelet analysis. This makes the structure of the existing current traveling wave distance measuring device complex and expensive. Due to the large amount of collected data and the large number of channels, the positioning accuracy of the sampling rate is greatly reduced due to this limitation. [0003] By establishing a CVT (capacitive voltage transformer) travel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
Inventor 郭建虎王英军蒋云峰康勇郭建平岳素华孟超李会彬张宇贤熊敏俊肖恩国赵一明
Owner STATE GRID CORP OF CHINA
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