Wide area protection measurement and control system of electrified railway

Abstract

The invention provides a wide area protection measurement and control system of an electrified railway. Based on the mutual exchange and efficient sharing of the IEC 61850 communication technology anddevice information, the power supply range of a traction substation is used as a unit, the functions of secondary equipment of traction power supply facilities are combined to realize automatic monitoring, measurement, automatic control, layered protection, layered blocking, self-healing reorganization and automation functions of major equipment of the traction power supply facilities, the used equipment is divided into process layer equipment, interval layer equipment and station control layer equipment, the interval layer equipment is divided into three levels from the limits of jurisdiction: local-level protection measurement and control, station-level protection measurement and control and wide-area-level protection measurement and control, the process layer equipment and the intervallayer equipment exchange information through a process layer network, the interval layer equipment and the station control layer equipment exchange information through a station control layer network, and the wide-area-level protection measurement and control of the interval layer equipment exchanges information through a wide-area-level protection measurement and control channel between tractionsubstations. The wide area protection measurement and control system improves the protection selectivity and quick motion, thereby having a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of traction power supply for electrified railways, in particular to a wide-area protection, measurement and control system for electrified railways. Background technique [0002] In recent years, great achievements have been made in the construction and development of electrified railways in my country. People have also put forward higher requirements for the development of electrified railways. As the core of traction power supply, the traction substation automation system needs high standards and strict requirements. However, the traditional integrated automation system does not have circuit breaker failure protection and busbar protection, and there are defects in the backup protection between devices. After the power supply arm fails, the quickness of the device needs to be improved. There is a lack of necessary logic blocking between the two, and the selectivity of the protection action needs to be stre...

AI Technical Summary

Problems solved by technology

However, the traditional integrated automation system does not have circuit breaker failure protection and busbar protection, and there are defects in the backup protection between devices. After the power supply arm fails, the quickness of the device needs to be improved. There is a lack of necessary logic blocking between them, and the selectivity of the protection action needs to be strengthened urgently. After the protection action, the power supply can only be reorganized manually, and the power supply recovery time is too long, which seriously affects the power supply quality.

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