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Power grid optimal planning method of large-scale grid-connected wind farm

An optimized planning, large-scale technology, applied in wind power generation, single-grid parallel feeding arrangement, etc., can solve the problems of a large amount of compensation investment, complex and changeable operation mode, and poor adaptability.

Active Publication Date: 2012-07-04
XI AN JIAOTONG UNIV
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Problems solved by technology

In the case of large-scale wind power grid-connected, the actual operation mode in the planning year is complex and changeable, and the scheme planned according to a typical scenario is not adaptable, which will easily lead to a large amount of compensation investment

Method used

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  • Power grid optimal planning method of large-scale grid-connected wind farm
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  • Power grid optimal planning method of large-scale grid-connected wind farm

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Embodiment Construction

[0054] The following will be combined with figure 2 The present invention is further described. But the content of the present invention is not limited thereto.

[0055] A grid optimization planning method for large-scale wind power grid-connected in the present invention comprises the following steps:

[0056] 1. It is necessary to first obtain relevant data from the power grid planning department: grid planning data, system operation forecast data, and wind power planning data;

[0057] Grid planning data include: the total number of nodes in the planned year N; the corridor set Ω that allows new lines; the number of existing lines in each corridor The maximum number of new lines allowed in each corridor The reactance value x of each line to be selected ij ;Transmission power limit for each line to be selected The construction cost C of each new line to be selected ij ; Including the node-branch correlation matrix M of the original line and the line to be selected;...

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Abstract

The invention discloses a power grid optimal planning method of a large-scale grid-connected wind farm, comprising the following steps of: step 1, obtaining net rack planning data, system operation predication data and wind power planning data; step 2, constructing a calculation model comprising a target function and a constraint condition of the model; step 3, setting calculation parameters; and step 4, inputting the net rack planning data, the system operation predication data and the wind power planning data, which are obtained by the step 1, and three parameters set by the step 3 into the calculation model constructed in the step 2; utilizing optimization algorithms including a Benders decomposition method, a branch and bound method and the like to solve through a computer. According to the method provided by the invention, a 'peak property' of wind power output is considered and the economic rationality of a power grid optimal planning scheme is ensured through allowing a wind power output peak value with a smaller probability; and the method provided by the invention comprehensively considers two aspects on newly-constructed line investment and wind power comprehensive benefits, and simultaneously ensures the line utilization rate and the wind power comprehensive benefits.

Description

【Technical field】 [0001] The invention relates to the technical field of power grid planning, in particular to a grid optimization planning method for large-scale wind power grid-connected with multiple scenarios and considering the "peak characteristics" of wind power output. 【Background technique】 [0002] With the rapid development of wind power in my country and the planning and construction of seven 10 million-kilowatt wind power bases, it is necessary to seek economical and reasonable grid planning methods to solve the problem of large-scale wind power grid integration. The existing grid planning methods for wind power grid integration generally use technical and economic analysis methods to screen alternatives to obtain the final planning scheme. This method is directly related to the experience of planners, and it is difficult to obtain the optimal solution. A more reasonable and effective method is to use the optimal planning method to establish a large-scale wind ...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCY02E10/763Y02E10/76
Inventor 王建学王若谷游树堂
Owner XI AN JIAOTONG UNIV
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