Real-time simulation method and device for electromagnetic transient state of wind power plant

An electromagnetic transient and real-time simulation technology, applied in the direction of instruments, simulators, control/regulation systems, etc., can solve problems such as difficult to achieve simulation time, low simulation accuracy, and shorten simulation time, so as to shorten simulation time and improve simulation accuracy , easy to achieve effect

Active Publication Date: 2019-03-26
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0004] In order to overcome the shortcomings of low simulation accuracy, difficulty in realization, and long simulation time in the above-mentioned prior art, the present invention provides a method and device for real-time simulation of the electromagnetic transient state of a wind farm, which determines the equivalent value of the wind turbine based on the electromagnetic transient characteristic curve of the wind turbine Impedance; use the equivalent impedance to equivalence the wind turbine to construct an equivalent model of the wind farm; perform electromagnetic transient simulation on the wind farm based on the equivalent model of the wind farm. The technical solution provided by the invention is easy to implement, which not only improves the simulation accuracy, but also reduced simulation time

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  • Real-time simulation method and device for electromagnetic transient state of wind power plant
  • Real-time simulation method and device for electromagnetic transient state of wind power plant
  • Real-time simulation method and device for electromagnetic transient state of wind power plant

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Embodiment 1

[0049] Embodiment 1 of the present invention provides a real-time simulation method for wind farm electromagnetic transient state, the specific flow chart is as follows figure 1 As shown, the specific process is as follows:

[0050] S101: Determine the equivalent impedance of the wind turbine based on the electromagnetic transient characteristic curve of the wind turbine;

[0051] S102: Construct an equivalent model of a wind farm by using the equivalent impedance to perform an equivalent value on the wind turbine;

[0052] S103: Perform electromagnetic transient simulation on the wind farm based on the wind farm equivalent model.

[0053] The wind farm includes multiple wind turbine modules, and each wind turbine module includes multiple wind turbines.

[0054]Determine the equivalent impedance of the wind turbine based on the electromagnetic transient characteristic curve of the wind turbine, including:

[0055] The actual model of the wind farm is established based on th...

Embodiment 2

[0075] Based on the same inventive concept, Embodiment 2 of the present invention also provides a wind farm electromagnetic transient real-time simulation device, including a determination module, a modeling module and a simulation module. The functions of the above modules are described in detail below:

[0076] A determining module, configured to determine the equivalent impedance of the wind turbine based on the electromagnetic transient characteristic curve of the wind turbine;

[0077] A modeling module, which is used to construct an equivalent model of a wind farm by using an equivalent impedance to perform an equivalent value on a wind turbine;

[0078] The simulation module is used for performing electromagnetic transient simulation on the wind farm based on the equivalent model of the wind farm.

[0079] The above determination module determines the equivalent impedance of the wind turbine based on the electromagnetic transient characteristic curve of the wind turbine...

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Abstract

The invention provides a real-time simulation method and device for an electromagnetic transient state of a wind power plant. An equivalent impedance value of a wind turbine generator system is determined based on an electromagnetic transient characteristic curve of a wind power plant; equivalent construction of a wind power plant equivalent model is carried out on the wind turbine generator system by using the equivalent impedance value; and electromagnetic transient state simulation is carried out on the wind power plant based on the wind power plant equivalent model. The method and device are easy to implement. The simulation precision is improved and the simulation time is shortened; and a problem of alternating-current convergence line coupling during the modeling and simulation process of the wind power plant is solved. The established wind power plant equivalent model enables the wind power plant to be equivalent to a few of limited wind turbine generator systems, so that the actual model of the wind power plant is simplified substantially; the simulation of the super-large-scale wind power plant or the wind power plant collection system is realized; and the real-time simulation capability of the wind power plant is improved substantially.

Description

technical field [0001] The invention relates to the technical field of electromagnetic transient simulation, in particular to a method and device for real-time simulation of electromagnetic transient in a wind farm. Background technique [0002] With the large-scale connection of wind turbines, wind power has become another important power source in the entire power grid besides synchronous machines. Therefore, the research on large-scale wind farms and wind power collection systems is becoming more and more important. However, due to the large scale of wind farms, usually consisting of dozens or even hundreds of wind turbines, detailed modeling of each wind turbine and its control system will greatly increase the complexity of simulation, resulting in too long calculation time , The resource utilization rate is extremely low, so it is necessary to carry out an equivalent modeling of the wind farm. [0003] In the prior art, the electromagnetic transient simulation method o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 刘纯刘可可王伟胜于钊李光辉何国庆金一丁李丽娜张怡孙艳霞邱威解鸿斌
Owner CHINA ELECTRIC POWER RES INST
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