An active power distribution method for wind farms participating in automatic power generation control

A technology for automatic power generation control and distribution methods, applied in wind power generation, electrical components, circuit devices, etc.

Active Publication Date: 2021-07-06
NANJING UNIV OF SCI & TECH
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  • Application Information

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  • An active power distribution method for wind farms participating in automatic power generation control
  • An active power distribution method for wind farms participating in automatic power generation control
  • An active power distribution method for wind farms participating in automatic power generation control

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Embodiment

[0039] A wind farm consisting of five 2MW wind turbines with the same configuration information is used as the research object, and the specific parameters are shown in Table 1.

[0040] Table 1.2 MW direct drive permanent magnet synchronous wind turbine aerodynamic parameters and mechanical parameters

[0041]

[0042] The wind speed information of each wind turbine in the wind farm in the previous cycle and the target power value issued by the grid to the wind farm are shown in Table 2 and Table 3, respectively.

[0043] Table 2. Wind speed information of each unit in the wind farm in the previous cycle

[0044]

[0045] Table 3. Wind farm target power command

[0046]

[0047] First, build a wind farm active power control system model in MATLAB / Simulink, and set the scheduling period T as 10 minutes, that is, the simulation time T sim = 60min. The lower limit of the power of the wind turbine is set at 12.5% ​​of its rated value, and the rate of change of the pow...

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Abstract

The invention discloses an active power distribution method for wind farms participating in automatic power generation control. The turbulent wind speed is taken as the wind condition of the current dispatch cycle; according to the wind speed information of the unit, the statistical characteristic index is calculated; the statistical characteristic index is substituted into the decision tree to estimate the maximum available wind power, and the output power of each wind turbine is capped at this value ; Determine the active output command of each wind turbine through the global optimal allocation method. The invention applies the maximum available wind power as a constraint condition to the automatic power generation control-oriented optimal distribution of wind farm active power, rationally distributes the active power output commands of each unit through a scheduling algorithm, so that the wind farm can smoothly respond to the power generation commands issued by the grid dispatcher, The stability of wind farm participation in automatic power generation control is improved.

Description

technical field [0001] The invention belongs to the field of active power distribution of wind farms, in particular to an active power distribution method for wind farms participating in automatic power generation control. Background technique [0002] In the study of wind power automatic generation control strategy, the operating status of wind turbines and the active power command issued by the wind farm layer are the main references for the wind power limit control strategy, and the stable and continuous active output of wind turbines within a dispatch cycle Accurate evaluation is the basis for reasonably determining the dispatching power command of wind turbines. Most of the existing methods do not take into account that wind turbines for automatic power generation control do not use MPPT control, and still estimate the maximum available wind power AWP of wind turbines based on the MPPT principle to obtain an optimistic result, so that the power command determined accord...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02J3/48H02J3/38
CPCH02J3/386H02J3/48H02J2203/20Y02E10/76
Inventor殷明慧金慧高一帆杨晶范颖谢云云卜京邹云
OwnerNANJING UNIV OF SCI & TECH