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A new type of selective tripping system for traction power supply feeder of high-speed railway

A traction power supply, high-speed rail technology, applied in information technology support systems, electrical components, circuit devices, etc., can solve problems such as affecting the line running and the service life of circuit breakers, and improve the quality of traction power supply, service life, and reliability. Effect

Active Publication Date: 2018-06-15
南京国电南自轨道交通工程有限公司 +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0010] The line circuit breaker that has not failed in the above-mentioned protection coordination mode has also gone through a tripping and reclosing process, which affects the line running and the service life of the circuit breaker

Method used

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  • A new type of selective tripping system for traction power supply feeder of high-speed railway

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Embodiment Construction

[0024] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0025] The IEC61850 protocol can be used to exchange information between devices through GOOSE communication. The new tripping system integrates all feeder protection devices and fault location devices of the substation, AT station, and district station of the same traction power supply arm into a GOOSE network. It can replace the special ranging channel of the conventional mode, and the GOOSE network can be used to quickly transmit fault information. The following describes the coordination process of the new tripping system by taking the cooperation between the distance measuring device and the feeder protection device when an uplink fault occurs in the catenary, such as figure 1 Shown:

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Abstract

The invention relates to a novel high-way traction power supply system capable of selective feed line tripping. A high-way traction power supply system uses an AT power supply mode, real-time fault information interaction is realized among devices via a GOOSE communication function of IEC61850 rules, and feed line protectors and fault range finding devices of a transformer station, an AT station and a section station of the same traction power supply arm belong to the same GOOSE network. When an overhead line fault occurs, interaction of fault direction determining information is carried out among all the feed line protectors and fault range finding devices of the same power supply arm to realize selective tripping for feed line protection of the transformer station, and the reliability of traction power supply is improved. The system can realize selective tripping for feed line protection, the opening / closing frequency of a direction breaker without fault is reduced, the service life of the breaker is improved, the quality of traction power supply is improved, and the application prospects are wide.

Description

technical field [0001] The invention belongs to the field of traction power supply systems for electrified railways, and in particular relates to a novel high-speed railway full-parallel AT power supply feeder selective tripping system. Background technique [0002] The conventional high-speed railway traction power supply system generally adopts the full parallel AT power supply mode. The main protection of the feeder circuit breaker DL1 and DL2 in the substation is impedance protection, and impedance 1 section is configured to protect the entire length of the line. DL4 and the parallel circuit breakers DL5-DL6 in the divisional substation are generally equipped with loss of voltage protection and voltage detection reclosing function, which cooperate with the feeder reclosing function of the substation to realize fault isolation and power supply mode recovery. [0003] The AT power supply of conventional substations is equipped with a dedicated fault location system accordi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26H02J13/00
CPCH02H7/261H02J13/0017Y02E60/00Y04S10/16Y04S10/20
Inventor 李永征孙金华温建民范三龙张华志
Owner 南京国电南自轨道交通工程有限公司
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