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Wind power plant active power dynamic grouping control method

A technology of active power and control method, applied in the control of wind turbines, wind energy power generation, wind turbines, etc., can solve the problems of large power fluctuations in wind farms, and achieve the effect of intelligent control, reducing power fluctuations, and reducing the number of adjustments

Active Publication Date: 2013-01-02
STATE GRID CORP OF CHINA +2
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of the present invention is to propose a dynamic grouping control method for active power of wind farms that can solve frequent active power adjustments and large power fluctuations in existing wind farms

Method used

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  • Wind power plant active power dynamic grouping control method
  • Wind power plant active power dynamic grouping control method
  • Wind power plant active power dynamic grouping control method

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Experimental program
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Embodiment 1

[0082] The dynamic grouping control method of the wind farm active power of the present invention is used to adjust the output active power of the wind farm to meet the active power adjustment instruction of the grid dispatching department. The active power command issued by the power grid dispatching department is as follows: Figure 5 shown. The active power control cycle of the wind farm is 15 minutes, and within a control cycle, the power of the wind turbine is considered to remain unchanged after being adjusted to the target value.

[0083] Existing research adopts a power allocation strategy based on unit state, and allocates according to the power changes of wind farms at adjacent time points. The following analyzes and compares the effects of the existing allocation strategy based on unit status and the dynamic grouping control method based on the active power of the wind farm in this example. The comparison of the active power curves of various types of clusters obt...

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Abstract

The invention provides a wind power plant active power dynamic grouping control method. The method comprises the steps of firstly, grouping wind generation sets according to active power predicted values in control periods of the wind generation sets; secondly, performing segmentation preprocessing of wind generation groups of which the power changes non-monotonously; thirdly, determining the requirement of an active power regulating variable of a wind power plant according to a system scheduling instruction and an operation condition of the wind generation sets; fourthly, performing distribution for the active power regulating variable of the wind power plant according to the grouping condition of the wind generation sets; and fifthly, setting time-delay control, when the time-delay control reaches a preset value, determining whether active power predicted values of the wind generation sets in the control periods are updated, and a next control is triggered. The wind generation sets are grouped reasonably according to ultra-short period wind generation power prediction, the active power is distributed reasonably according to variation trends of different types of wind generation sets, the adjusting times of the wind generation sets are reduced, and the power fluctuation of the wind generation sets is reduced.

Description

technical field [0001] The invention relates to a dynamic grouping control method for active power of a wind farm, and belongs to the technical field of wind farm control in new energy power generation technology. Background technique [0002] In recent years, domestic wind power has developed rapidly. As of the end of 2011, the total installed capacity of domestic wind power has exceeded 62 million kilowatts. The development of wind power has the following characteristics: (1) The development speed is fast, and the scale has taken the lead in the world; (2) Large-scale centralized connection (3) The comprehensive operation level is close to the world advanced level. With the increasing proportion of wind power, the randomness and volatility of wind power have a greater impact on the active power dispatching of the power system, and the random power injection of wind farms may affect the normal operation of the power system. Therefore, reasonable and effective control of th...

Claims

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Application Information

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IPC IPC(8): H02J3/48
CPCY02E10/763F03D7/048Y02E10/72
Inventor 陈宁钱敏慧陈梅汪宁渤丁杰吴福保朱凌志吕宏水
Owner STATE GRID CORP OF CHINA
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