New energy power station grid connection method and system based on satellite time service and synchronous compensation

By using BeiDou satellite timing and a multi-level synchronization compensation mechanism, the problem of GPS timing being easily interfered with during grid connection of new energy power plants has been solved, realizing autonomous and reliable synchronization and frequency stability of the power grid, which is suitable for remote areas and microgrids.

CN121965761BActive Publication Date: 2026-07-24CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Filing Date
2026-03-31
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing grid connection technologies for new energy power plants rely on GPS timing, which is susceptible to interference, leading to increased phase synchronization errors. This results in a lack of inertial and damping support, and there is a lack of systematic response strategies in the event of prolonged loss of satellite timing signals, thus affecting grid stability.

Method used

The BeiDou satellite timing system is used to generate a unified reference synchronization time and phase angle. Combined with a multi-level synchronization compensation mechanism, including a local high-stability timekeeping module, regional coordination and inertial maintenance, the phase consistency and frequency stability among power station groups are ensured.

Benefits of technology

It enables autonomous and reliable synchronization of new energy power plants in the event of GPS signal failure, improving the stability and applicability of the power grid, and is particularly suitable for remote areas and microgrids with weak communication infrastructure.

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Abstract

The application discloses a new energy power station grid connection method and system based on Beidou satellite timing and synchronous compensation, and the method comprises the following steps: receiving a Beidou satellite timing signal, generating a unified reference synchronous time, and calculating a reference synchronous phase angle according to the reference synchronous time; taking the reference synchronous phase angle as a control reference, driving a network type inverter to perform a grid connection operation; monitoring a Beidou timing signal integrity index in real time, and when detecting that the Beidou timing signal is abnormal or invalid, starting at least one level of synchronous compensation mechanism according to the abnormal or invalid duration and the system operation state, so as to maintain the phase continuity and frequency stability of the new energy power station grid connection operation.
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Citation Information

Patent Citations

  • Power distribution network distributed measurement synchronization method and device based on Beidou satellite time service

    CN120729459A