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Establishment method and simulation method of wind power plant fan converter simulation model

A simulation model and establishment method technology, applied in wind power generation, design optimization/simulation, instruments, etc., can solve problems such as large amount of calculation, achieve simple calculation, avoid matrix operation, and improve the efficiency of system simulation

Active Publication Date: 2020-06-16
XIAN XJ POWER ELECTRONICS TECH +4
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for establishing a simulation model of a wind farm fan converter and a simulation method, which is used to solve the problem of using the existing model of the converter Simulation analysis of problems with a large amount of computation

Method used

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  • Establishment method and simulation method of wind power plant fan converter simulation model
  • Establishment method and simulation method of wind power plant fan converter simulation model
  • Establishment method and simulation method of wind power plant fan converter simulation model

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Embodiment Construction

[0032] Example of a method for establishing a simulation model of a wind turbine converter in a wind farm:

[0033] A method for establishing a simulation model of a wind turbine converter in a wind farm includes the following steps:

[0034] 1) The machine-side converter of the wind farm is equivalent to the first AC controlled voltage source, and the grid-side converter of the wind farm is equivalent to the second AC controlled voltage source.

[0035] The grid-side converter is the converter on the side connected to the grid, and the generator-side converter is the converter on the fan side. Since the grid-side converter and the machine-side converter of the wind farm are voltage source converters, the power transmission is realized by the voltage difference between the two ends of the commutation reactance, that is, the AC voltage corresponding to the output target power of the AC side of the control valve, So the converter can be equivalent to figure 2 The shown AC con...

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Abstract

The invention relates to an establishment method and simulation method of a wind power plant fan converter simulation model and belongs to the technical field of new energy grid-connected power generation. The establishment method of the wind power plant fan converter simulation model provided by the invention comprises the following steps that: (1) the machine side converter of a wind power plantis equivalent to a first alternating current controlled voltage source, and the network side converter of the wind power plant is equivalent to a second alternating current controlled voltage source;(2) a power transmission model between the alternating-current controlled voltage sources is established according to the power transmission characteristic that the output power of the machine-side converter and the absorption power of the grid-side fan converter are kept balanced; and (3) the voltage control quantities of the first alternating-current controlled voltage source and the second alternating-current controlled voltage source are calculated. According to the wind power plant fan converter simulation model established through the above method is easy and convenient in calculation during simulation and can be suitable for the simulation of a wind power plant system comprising a plurality of wind turbine generators, and can improve system simulation efficiency on the premise of guaranteeing accuracy.

Description

technical field [0001] The invention relates to a method for establishing a simulation model of a fan converter in a wind farm and a simulation method, and belongs to the technical field of new energy grid-connected power generation. Background technique [0002] Fossil energy such as coal, oil, and natural gas has been increasingly scarce after long-term unrestricted consumption. Energy depletion and environmental pollution have become difficult problems facing society today, which has greatly hindered the comprehensive promotion of sustainable energy development and the establishment of an environment-friendly society. [0003] Wind power generation technology is favored due to its cleanness, no pollution, relatively mature industrial technology and relatively low power generation cost. Due to the randomness and intermittent characteristics of wind power generation, the scale of wind farm power generation is greatly affected by wind speed. At present, the large-scale ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38G06F30/20G06F113/06
CPCY02E10/76
Inventor 行登江李道洋王先为刘欣和刘启建
Owner XIAN XJ POWER ELECTRONICS TECH
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