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A wind power base output distribution method considering reactive power compensation switching voltage constraints

A technology of voltage constraint and output distribution, applied in reactive power compensation, AC network voltage adjustment, etc., can solve problems such as reducing wind power acceptance capacity, and achieve the effect of improving wind power acceptance capacity and meeting grid operation constraints

Active Publication Date: 2016-02-24
STATE GRID CORP OF CHINA +2
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Problems solved by technology

The existing wind power output planning methods usually ignore this problem, or meet the constraint by reducing the output of each wind farm on average, which reduces the wind power acceptance capacity

Method used

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  • A wind power base output distribution method considering reactive power compensation switching voltage constraints
  • A wind power base output distribution method considering reactive power compensation switching voltage constraints

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 , the present invention provides a wind power base output distribution method considering reactive power compensation switching voltage constraints, the distribution method includes the following steps:

[0030] Step 1: Arrange the full output operation mode of the wind power base, and use this mode as the basic mode;

[0031] Step 2: In the basic mode, simulate and calculate the voltage fluctuation ΔV of the i-th bus caused by the single-group reactive power compensation of the j-th wind farm ij , initial j=1, i=1;

[0032] Step 3: Judging ΔV ij Whether the limit is exceeded, if it is transferred to step 4, otherwise it is transferred to step 5;

[0033] Step 4: Determine the wind farm that is most sensitive to voltage fluctuations in the basic mode, and take control measures to reduce the output of the wind farm;

[0034] Step 5...

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Abstract

The invention provides a wind power base output distribution method considering reactive compensation switching voltage constraint. The wind power base output distribution method considering the reactive compensation switching voltage constraint comprises the following steps that a full-output operation mode of a window power base is established and is used as the fundamental mode; the voltage fluctuation delta V[ij], caused by switching single-unit reactive compensation of the jth wind power plant, of the ith bus is calculated in a simulating mode in the fundamental mode, wherein the initial value of j is 1, and the initial value of i is 1; whether delta V[ij] exceeds a threshold or not is judged; if yes, the wind power plant which is the most sensitive to the voltage fluctuation in the fundamental mode is determined, and control measures for lowering the output of the wind power plant are taken; if not, judgment of the influence of the switching single-unit reactive compensation of each wind power plant on the threshold exceeding of voltage fluctuation of each bus in the wind power base is completed. By the adoption of the wind power base output distribution method, the wind power plant which is influenced most by the reactive compensation switching is found through sensitivity calculation, the distribution mode, meeting the requirement of the reactive compensation voltage constraint, for the largest wind power output of the wind power base can be provided, the constraint that a power grid operates safely is met and the wind power penetration is improved.

Description

technical field [0001] The invention relates to a distribution method, in particular to a wind power base output distribution method considering the voltage constraint of reactive power compensation switching. Background technique [0002] Vigorously developing renewable new energy is an inevitable choice for our country facing the dual pressure of energy shortage and environmental deterioration. Limited by natural resources and load distribution, the development of new energy in my country mainly adopts large-scale centralized development and high-voltage long-distance power transmission. With the continuous and rapid growth of the total installed capacity of wind power and photovoltaics, economic dispatch and stable operation problems are becoming more and more serious. become a bottleneck factor restricting the development of new energy. [0003] For large-scale wind power bases, as the level of tidal currents in the vicinity becomes heavier, switching a group of reactive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/16
CPCY02E40/30
Inventor 罗煦之王安斯罗建裕李海峰李汇群
Owner STATE GRID CORP OF CHINA
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