Automatic system fault handling method of distribution network containing a plurality of distributed power supplies

Abstract

The invention discloses an automatic system fault handling method of a distribution network containing a plurality of distributed power supplies. The output mode of traditional distribution network protection and feeder automation cannot meet the requirement on distribution network fault handling when a system containing a plurality of distributed power supplies works, and must be improved and perfected. The method establishes an independent fault information transmission channel with optical fiber Ethernet equipment through an SOCKET connection method on the basis of using light Ethernet communication; adopts a peer-to-peer communication mechanism, realizes the peer-to-peer communication between the fault information of terminal devices, and effectively solves the problems of production, feeder automation and the like under the circumstance of a looped network. The automatic system fault handling method of the distribution network containing a plurality of distributed power supplies has very good sensitivity, selectivity and quickness.

Description

Technical field [0001] The invention relates to the field of distribution network automation, in particular to a fault processing method for a distribution network automation system containing distributed multiple power sources. Background technique [0002] The operation and management mode of the conventional distribution network automation system mostly adopts a three-layer structure, namely: the main station layer of the distribution network, the sub-station layer of the distribution network, and the terminal layer of the distribution network. Different layers rely on the distribution network communication system. To exchange information. In terms of fault handling in the distribution network (Feeder Automation System, FA, the same below), the main station, sub-station and terminal of the distribution network each perform different functions. In one word: the distribution network terminal realizes To obtain fault information, the sub-station of the distribution network reali...

AI Technical Summary

Problems solved by technology

[0013] However, with the continuous expansion of applications of Distributed Generators (DG), distributed power sources such as wind power, photovoltaics, energy storage, and micro-gas turbines are mostly connected to the distribution network directly or in the form of micro-grids (such as figure 2 As shown), in this way, the traditional distribution network has changed from a single-ended live operation mode that does not allow ring network operation to an operation mode that operates in a multi-distributed power supply and ring network operation. The traditional The output mode of distribution network protection and feeder automation will not be able to meet the requirements of distribution network fault handling in the case of distributed multi-power system operation, and must be improved and perfected

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