Virtual synchronous machine control method and system for double-wind-wheel wind turbine generator

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

Active Publication Date: 2021-07-09
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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  • Virtual synchronous machine control method and system for double-wind-wheel wind turbine generator

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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] like 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 gri...

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Abstract

The invention discloses a virtual synchronous machine control method and system for a double-wind-wheel wind turbine generator set, and belongs to the technical field of wind turbine generator set control. Flexible adjustment of active power/reactive power of the unit is realized through coordinated control of two machine sides of the double-wind-wheel unit, so that the grid connection performance of the wind turbine unit can be improved on the basis of improving the operation efficiency of the wind turbine unit, and indifference control of the active power and the reactive power is realized; and when the amplitude and the frequency of a power grid are abnormal, inertia and one-time adjusting functions can be provided; the wind turbine unit realizes frequency response and voltage response through active/reactive power adjustment, and has the functions of inertia response, damping control and the like, so that the dynamic stability of a power system is further improved; and meanwhile, the coordinated output characteristic of the two wind wheel sets is fully utilized, the control logic is simple, and implementation is easy.

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 Applications(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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