Three-dimensional multi-port synchronous machine characteristic shaping pooling station and control method thereof

CN119482685AActive Publication Date: 2025-02-18CHINA EPRI ELECTRIC POWER ENG CO LTD
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Patent Information

Application Number
CN202411351894.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-26
Publication Date
2025-02-18
Estimated Expiration
2044-09-26

AI Technical Summary

Technical Problem

The existing technology is difficult to effectively solve the technical challenges of multi-point distribution and large-scale convergence networking of new energy, especially when the power grid support capacity decreases, the marginal cost of improving channel transmission capacity increases, and the risk of power oscillation increases.

Method used

Design a three-dimensional multi-port synchronous machine characteristic shaping convergence station, including multiple DC ports, industrial frequency AC ports, low frequency AC ports, power conversion units and coordinated control output units, through these components, different voltage levels and different forms of power It is interconnected and shaped through the characteristics of the synchronous machine to provide active support for voltage, frequency and inertia to access new energy stations and systems.

Benefits of technology

The large-scale collection, development and utilization of multi-point and multiple types of new energy has been realized, and the DC, industrial frequency AC and low-frequency AC new energy collection lines with different transmission capacity and different voltage levels have been connected, which can stabilize the overall power fluctuations of the new energy collection system and is GW-level Interfaces are provided for high-voltage DC transmission channels and above.

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Abstract

The invention relates to a three-dimensional multi-port synchronous machine characteristic shaping pooling station and a control method thereof. The three-dimensional multi-port synchronous machine characteristic shaping pooling station comprises a plurality of direct current ports used for being connected with direct current systems of different voltage grades; the plurality of power frequency alternating current ports are used for connecting power frequency alternating current systems with different voltage levels; the plurality of low-frequency alternating-current ports are used for connecting low-frequency alternating-current systems with different voltage levels; the power conversion unit is used for controlling transmission power of a plurality of direct current ports and input / output direct current voltage levels, performing power conversion between a power frequency alternating current form and a low frequency alternating current form and controlling transmission power of the power conversion unit, and performing power conversion between a direct current form and the power frequency alternating current form and controlling transmission power of the power conversion unit; and the coordinated control output unit is used for carrying out coordinated control on the plurality of power frequency alternating current ports and the plurality of low frequency alternating current ports and carrying out synchronous machine characteristic shaping on the plurality of power frequency alternating current ports and the plurality of low frequency alternating current ports. According to the invention, the energy collection hub for collection access and consumption of different scales and different types of new energy is realized.
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Citation Information

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