Multi-point synchronization device based on single-point synchronization

By designing a multi-point concurrent device based on single point synchronous period, and using synchronous point selection relays and intermediate relays to achieve grid connection, the problem of lack of concurrent grid connection capabilities during the operation of generator islands in the prior art is solved, and efficient concurrent grid connection is achieved, saving working time and cost.

CN222691395UActive Publication Date: 2025-03-28ZHEJIANG ELECTRIC POWER DESIGN INST
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Patent Information

Application Number
CN202421196628.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-29
Publication Date
2025-03-28
Estimated Expiration
2034-05-29

AI Technical Summary

Technical Problem

The existing equipment at the same time lacks the ability to connect to the grid at the same time under the generator island operation and the power operation mode of the unit load-shaving belt plant, resulting in large working hours and workloads.

Method used

A multi-point concurrent device based on single point synchronous period is designed. By connecting the synchronous point selection relay and the intermediate relay, the parallel point selection and the introduction of switching loops are realized, so as to achieve concurrent grid connection when the unit is operating in an isolated island.

Benefits of technology

It has achieved the same period of grid connection in the unit's isolated island operation, saving working time and workload, improving economic benefits, and reducing one-time investment in the project.

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Abstract

The utility model discloses a multi-point synchronizing device based on single-point synchronizing, which comprises a single-point synchronizing device and further comprises a first synchronizing point selection relay connected to the single-point synchronizing device, a second synchronizing point selection relay and a third synchronizing point selection relay are installed on one side of the first synchronizing point selection relay, and a second synchronizing point selection relay and a third synchronizing point selection relay are installed on the other side of the first synchronizing point selection relay. And a closing outlet of the single-point synchronizing device is connected with the first intermediate relay and the second intermediate relay. The beneficial effects of the utility model are that the multi-point synchronization function is the synchronization grid-connected basis of the unit in the island operation state, and the power plant after the unit becomes the island can quickly recover the relation with the system through the synchronization device; the single-point synchronizing device is mounted in the synchronizing screen, so that the use time and the use cost are reduced; synchronous grid connection in an island operation state is realized, one-time investment of a project is saved, and economic benefits are improved.
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