Cooperative protection method for electrified railway substation and switching station

Abstract

The invention provides a cooperative protection method for an electrified railway substation and a switching station. An optical fiber data transmission network is built along the electrified railway,and the special bare optical fiber is accessed to a traction substation, the switching station and various other kinds of stations. An ethernet switch is arranged in the traction substation and the switching station to connect the feeder protection device of the traction substation and the switching station so as to realize the data exchange function between the protection devices. The GOOSE message transmission mechanism defined by IEC61850 is used in the information interaction. The incoming line and the feeder protection device of the switching station can transmit the protection blockinginformation to the feeder protection device of the substation. A data communication network is established between the substation and the switching station for real-time exchange of the protection data. According to the cooperative protection method, the traction substation and the switching station realize the protection function according to the global information so as to achieve the selectivity and the quick movement of the protection, reduce the influence range of the fault and provide the powerful technical support for the normal operation of the electrified railway.

Description

technical field

[0001] The invention relates to the technical field of electrified railway traction power supply, in particular to a coordinated protection method for electrified railway substations and switching stations. Background technique

[0002] In the traction power supply of existing electrified railways, the power supply mode of substation-catenary-switching station is generally used for power supply. Feed line power supply. In practical application, the segmental selectivity of the traction network power supply protection between substations and switching stations is realized through the traction network segmentation and protection delay setting between substations and switching stations. The protection range of section I of the feeder distance of the substation is from the substation to the incoming line side of the switching station, and the setting value is generally set at 0.85 times the total length of the catenary line between the substation and the switchi...

Examples

Embodiment Construction

[0013] figure 1 As shown, in the existing electrified railway traction power supply, there is a power supply mode of substation-catenary-switching station. Feeder line power supply, of which 211 and 212 are the feeder downstream and upstream circuit breakers of the substation respectively, 271 and 272 are the incoming circuit breakers of the switching station respectively, 251 and 252 are the downstream feeder circuit breakers of the switching station, and 1B is the switching station For the downlink backup feeder circuit breakers, 253 and 254 are the uplink feeder circuit breakers for the switching station, and 2B is the uplink backup feeder circuit breaker for the switching station. The traction network supplies power normally, the feeder circuit breakers of substations 211 and 212, the incoming circuit breakers of switching stations 271 and 272, and the circuit breakers of switching stations 251, 252, 253 and 254 are all in the closed position. Substation-switching station ...

technical field

[0001] The invention relates to the technical field of electrified railway traction power supply, in particular to a coordinated protection method for electrified railway substations and switching stations. Background technique

[0002] In the traction power supply of existing electrified railways, the power supply mode of substation-catenary-switching station is generally used for power supply. Feed line power supply. In practical application, the segmental selectivity of the traction network power supply protection between substations and switching stations is realized through the traction network segmentation and protection delay setting between substations and switching stations. The protection range of section I of the feeder distance of the substation is from the substation to the incoming line side of the switching station, and the setting value is generally set at 0.85 times the total length of the catenary line between the substation and the switchi...

Examples

Embodiment Construction

[0013] figure 1 As shown, in the existing electrified railway traction power supply, there is a power supply mode of substation-catenary-switching station. Feeder line power supply, of which 211 and 212 are the feeder downstream and upstream circuit breakers of the substation respectively, 271 and 272 are the incoming circuit breakers of the switching station respectively, 251 and 252 are the downstream feeder circuit breakers of the switching station, and 1B is the switching station For the downlink backup feeder circuit breakers, 253 and 254 are the uplink feeder circuit breakers for the switching station, and 2B is the uplink backup feeder circuit breaker for the switching station. The traction network supplies power normally, the feeder circuit breakers of substations 211 and 212, the incoming circuit breakers of switching stations 271 and 272, and the circuit breakers of switching stations 251, 252, 253 and 254 are all in the closed position. Substation-switching station ...

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