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Simple online transmission line fault positioning and monitoring system

A technology for transmission lines, monitoring systems, applied in fault locations, fault detection by conductor type, information technology support systems, etc.

Active Publication Date: 2017-07-21
SHANGHAI OUMIAO ELECTRIC INSPECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current fault location devices are still unable to meet the above requirements

Method used

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  • Simple online transmission line fault positioning and monitoring system
  • Simple online transmission line fault positioning and monitoring system
  • Simple online transmission line fault positioning and monitoring system

Examples

Experimental program
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Effect test

Embodiment Construction

[0054] The invention provides an online fault location and monitoring system for transmission lines, such as Figure 4 , Figure 5 Two examples of the system architecture are shown respectively. The system can use the distance between two monitoring terminals (ie, fault detectors) as the basis for judgment, and can quickly identify the location of the fault section.

[0055] exist Figure 4 In the example of , the system mainly includes several fault detectors and several integrated communication devices. Among them, each fault detector is installed on the wires of power transmission between towers and poles to detect the upgoing wave signal of the wires and line status, etc., and send the detection results to the network within its communication range through ZigBee, WiFi and other wireless short-distance communication methods. An integrated communication device within the range (such as <2km); the integrated communication device receives the detection results of one or more...

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Abstract

The invention provides a simple online transmission line fault positioning and monitoring system, which comprises a fault detector monitoring a transmission wire. A sphere body is arranged in the fault detector, and the sphere body comprises two hemisphere bodies capable of being opened or closed; the fault detector is provided with a first current transformer and a second current transformer, and each current transformer uses a Rogowski coil which can be opened along with opening of the two hemisphere bodies and closed along with closing of the two hemisphere bodies; when the first current transformer is closed, the first current transformer surrounds the outer side of the wire for power taking; when the second current transformer is closed, the second current transformer surrounds the outer side of the wire for transmission parameter sampling; and the fault detector is provided with a communication unit, and data obtained when the fault detector monitors the wire transmission parameters are transmitted outwardly. Various fault such as inter-phase short circuit and single-phase grounding fault of the transmission system can be detected and positioned.

Description

technical field [0001] The invention relates to a transmission line fault location technology, in particular to a simple on-line fault location monitoring system for a transmission line. Background technique [0002] figure 1 Shows some common power line faults. Accurate identification of transmission line fault causes is of great significance to transmission line maintenance and shortening line outage time. Since the fault current traveling wave on the transmission line presents different electromagnetic transient characteristics when tripping faults of different natures occur, the traveling wave data of the transmission line fault current is extracted through online monitoring and the electromagnetic transient characteristics are analyzed. The purpose of accurately identifying the cause of lightning strikes and non-lightning strikes on transmission lines can be achieved; at the same time, the polarity of the traveling wave can be analyzed and judged to obtain the type of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/085Y04S10/52
Inventor 徐宽刘成邓科平
Owner SHANGHAI OUMIAO ELECTRIC INSPECTION CO LTD
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