GOOSE mode network standby dispensing method based on digital transmission network

Abstract

The invention relates to a GOOSE mode networking spare power automatic switching method based on a digital transmission network, whole spare power automatic switching function is jointly completed by interval layers of different protected objects, various dispersed measurement and control units take charge of distinguishing whether has voltage, current and TV wire break and the like, discrimination results are transmitted to a main logic treatment unit in a mode of GOOSE signals through the digital transmission network, output results are also transmitted to the dispersed measurement and control units in the mode of the GOOSE signals through the digital transmission network to drive an intelligent switch to complete the whole logic function. Analog quantity is collected through using IEC61850 standard SMV service message and is transported to the measurement and control units, and a switching value and the logic discrimination results are transported by using a GOOSE channel. The whole spare power automatic switching function can be directly used for a digital substation which is built based on an IEC61850 protocol.

Description

technical field [0001] The invention belongs to the field of relay protection automation in the field of electric power engineering, and in particular relates to a networked standby self-injection function based on a GOOSE mode. Background technique [0002] At present, in the power system, the standby automatic switchover function is mostly completed by a special standby automatic switchover device. The position information of the switch and knife switch is transmitted to the standby automatic switching device through the signal cable; the AC volume is transmitted to the standby automatic switching device through an independent AC acquisition circuit; finally, the standby automatic switching device completes the identification of the operation mode and the action logic judgment, The action logic output is transmitted to the corresponding switch through the cable to complete the opening and closing of the switch. In the traditional protection scheme, more signal cables and ...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a new method of backup and automatic switching function based on the GOOSE mode suitable for the construction of digital substations, which overcomes the shortcomings of the traditional backup and automatic switching schemes that there are many acquisition and control cables and cannot be directly applied to digital substations

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