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A virtual synchronous machine control method and system for dual wind turbine wind turbines

A technology for virtual synchronous machines and wind turbines, applied in wind power generation, electrical components, circuit devices, etc., can solve problems such as single function, achieve the effect of simple control logic, ensure accuracy, and improve dynamic stability

Active Publication Date: 2022-05-17
HUANENG CLEAN ENERGY RES INST +1
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Problems solved by technology

However, there is no research on the virtual synchronous control technology for the grid-connected dual-wind turbine wind turbines. The research on the virtual synchronous technology of wind power generation mainly focuses on the virtual synchronous control strategy itself in the power electronic grid-connected converter, and the function is relatively single. Failure to fully utilize the advantages of flexible control of power electronic devices

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  • A virtual synchronous machine control method and system for dual wind turbine wind turbines

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, which are explanations of the present invention rather than limitations.

[0034] Such as figure 1 , is the flow chart of the virtual synchronous machine control method for the double wind turbine wind turbine of the present invention, comprising the following steps:

[0035] S1: Extract the positive sequence components of the fundamental wave of the grid voltage and current. The collected grid voltage and current signals are first filtered out the high-frequency interference signals in the signal through the filtering link, and the low-frequency fundamental wave components are retained and the fundamental components of the voltage and current signals are extracted. Wave positive sequence component; calculate the actual active power and actual reactive power output by the wind turbine according to the positive sequence component of the ...

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Abstract

The invention discloses a virtual synchronous machine control method and system for a wind turbine with double wind turbines, and belongs to the technical field of wind turbine control. Through the coordinated control of the two sides of the double wind turbine unit, the flexible adjustment of the active power / reactive power of the unit can be realized. On the basis of improving the operating efficiency of the wind turbine unit, the grid-connected performance of the wind turbine unit can be improved, and the active power and reactive power can be adjusted. The non-difference control of reactive power can provide inertial and primary adjustment functions when the grid amplitude and frequency are abnormal. In addition, the wind turbine can achieve frequency response, voltage response, inertia response and damping control through active / reactive power adjustment, further improving the dynamic stability of the power system. At the same time, the invention makes full use of the coordinated output characteristics of the two wind turbines, and the control logic is simple and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of control of wind power generating sets, and in particular relates to a virtual synchronous machine control method and system for double wind turbine wind generating sets. Background technique [0002] At present, with the rapid increase in the installed capacity of new energy power generation, the proportion of new energy power generation is increasing. As an important part of new energy power generation, wind power generation has a very large installed capacity. [0003] Compared with the most widely used single-rotor wind power generation device with low power generation efficiency, the development of double-rotor wind power generation device with high power generation efficiency and high utilization efficiency of wind energy resources at low wind speed has attracted more and more attention from researchers. The efficient development and utilization of wind energy resources is of great significance. The...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/40H02J3/48H02J3/50H02J3/46H02J3/01
CPCH02J3/40H02J3/48H02J3/50H02J3/466H02J3/01H02J2300/28Y02E40/40
Inventor 郭小江秦猛唐巍付明志李新凯劳文欣叶昭良李铮郑磊申旭辉孙栩汤海雁刘楠
Owner HUANENG CLEAN ENERGY RES INST
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