Parameter setting method and device for grid connection success of distributed phase modifier

By setting the appropriate frequency slip value, the maximum allowable value of the center frequency of the same period and the angular difference value in the distributed camera, the problems of low grid connection success rate and large closing impact caused by the difference in idle speed characteristics of the distributed camera are solved, and a 100% grid connection success rate and a smaller closing impact are achieved.

CN119891248AActive Publication Date: 2025-04-25NORTH CHINA ELECTRICAL POWER RES INST +1
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Patent Information

Application Number
CN202510077188.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2025-04-25
Estimated Expiration
2045-01-17

AI Technical Summary

Technical Problem

The idler speed characteristics of distributed cameras vary greatly, resulting in uncertain window time during the same period, thereby reducing the success rate of grid connection. In addition, the existing technology is blind when closing, which may lead to a large closing impact or failure of grid connection.

Method used

Through experiments, determine the frequency slip value of the distributed camera and the maximum allowable value of the center frequency of the same period window, calculate the frequency difference value and angular difference value, and set the minimum allowable time of the same period window to ensure that there is a same period window that meets the grid connection conditions during the camera idler speed adjustment process.

Benefits of technology

A 100% success rate of grid connection is achieved, reducing the impact of closing, and improving the reliability and safety of grid connection operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a parameter setting method and device for grid connection success of a distributed phase modifier. The method comprises the following steps: determining a frequency slip constant value of the distributed phase modifier according to a test; determining the maximum allowable value of the center frequency of the window in the same period according to the impact requirement or empirical value on the distributed phase modifier during switching on; determining a frequency difference constant value of the distributed phase modifier according to the frequency slip constant value and the maximum allowable value of the center frequency of the synchronous window; according to the error of the leading time, determining the minimum permissible time of the synchronous window of the distributed phase modifier; and determining an angular difference constant value of the distributed phase modifier according to the minimum permissible time of the synchronous window. According to the method, grid-connected closing of the phase modifier does not have blindness any more, 100% grid-connected success can be ensured, and closing impact can be effectively reduced at the same time.
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Citation Information

Patent Citations

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