A network-based adaptive backup protection control method for distribution network

Abstract

The invention discloses a network-based distribution network self-adaptive backup protection control system, comprises a distribution network sub-station control device arranged at the distribution network sub-station and a plurality of distribution network protection control terminals connected with the distribution network sub-station through a network, wherein the distribution network sub-station control device is used for adaptively identifying the network topology connected with the distribution network sub-station, determining the main protection and backup protection strategy, the backup self-healing strategy, the timing sequence, and the fixed value, and sending them to the distribution network protection control terminal; The distribution network protection control terminal is arranged in each distribution station / switch station of the distribution network, and is used for transmitting the real-time data collection information of the distribution station / switch station to thearea sub-station. And receives the circuit breaker / load switch action information sent by the area sub-station control device, executes the corresponding action, and reports the action execution result; And it is used to receive the time setting result sent by the sub-station in the receiving area, so as to realize the cooperation between the backup protection and the main protection. The invention also discloses a corresponding method. The invention can quickly and accurately cut off and isolate the fault area, restore the power supply for the normal area in time, and ensure the reliability of the power supply.

Description

technical field [0001] The invention relates to the technical field of distribution network protection of a power system, in particular to a network-based distribution network adaptive backup protection control method. Background technique [0002] The distribution network has the characteristics and changes of various wiring forms, frequent network structure changes, huge and complex equipment, uneven configuration levels, variable operation modes, and distributed power access. Protection and control are required to adapt to changes in network wiring, equipment Changes in configuration, changes in how things work. [0003] At present, the protection and control of the distribution network are independently configured, lacking good cooperation ability with each other, and it is difficult to automatically adapt to the change of the distribution network topology. In the current distribution network, the protection based on network formation can better overcome the problems of...

AI Technical Summary

Problems solved by technology

[0006] 1. The protection and control of the current distribution network are independently configured, and they lack good coordination with each other, and it is difficult to automatically adapt to changes in the distribution network topology

[0007] 2. The network-based protection used in the current distribution network can better overcome the problems of poor configuration and coordination between protection and control, and difficulty in adapting to changes in the topology of the distribution network. However, in the event of a network failure , the selectivity and reliability of protection will be difficult to guarantee

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