Multi-closed-loop multi-segment interconnection power grid wiring structure and system

Abstract

The invention discloses a multi-closed-loop multi-segment interconnection power grid wiring structure. Through arranging at least two switch stations among closed loop structures of different transformer stations, each switch station can realize load transfer according to the switch stations through segment automatic bus transfer equipment when the transformer stations lose power supplies, namely each switch station realizes power supply recovery through segment breakers, and thereby a technical problem that automatic load transfer can be realized with dependence on a regional automatic bus transfer function in the prior art is solved. The wiring structure comprises a closed loop structure, the switch stations, line breakers and the segment breakers arranged in the switch stations.

Description

Technical field [0001] The invention relates to the field of electric power systems, in particular to a multi-closed-loop multi-segment interconnected power grid wiring structure and system. Background technique [0002] With the rapid development of smart grids, the application of smart distribution networks has also been fully developed. According to their actual development stage, each locality puts forward the wiring structure of the distribution network suitable for the power supply reliability requirements of the region, and continues to study higher reliability, more reasonable structure, better economic benefits, and more suitable for the development direction of smart distribution network The structure of the distribution network. In order to meet the requirements of high reliability, the ring network power supply structure is the first choice. [0003] The current ring network power supply structure is mainly as follows Figure 19 The shown double-chain closed-loop wirin...

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Problems solved by technology

[0004] However, this double-chain closed-loop connection type distribution network connection structure has certain defects, that is, it needs to rely on the regional backup and automatic switching function to realize the automatic transfer of loads, such as Figure 20 As shown, that is, when there is a voltage loss in the left substation, the regional backup self-switching function will trip the circuit breaker on the two outgoing lines corresponding to the left substation. After confirming the trip, close the circuit breaker on the connecting line between the closed loops , to realize closed-loop structure 1. All loads are transferred from closed-loop 2.

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