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Mold splitting type voltage control method for wind power plant cluster

A voltage control method and technology of wind farms, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve problems such as coordination between adjacent wind farms, unreasonable reactive power flow, etc.

Inactive Publication Date: 2013-08-21
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0005] Aiming at the problem mentioned in the background technology that the current domestic power grid’s voltage management method for wind farm clusters cannot consider the coordination between adjacent wind farms, resulting in unreasonable reactive power flows, the present invention proposes a method for wind farm clusters Split mode voltage control method

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  • Mold splitting type voltage control method for wind power plant cluster
  • Mold splitting type voltage control method for wind power plant cluster
  • Mold splitting type voltage control method for wind power plant cluster

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Embodiment Construction

[0037] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0038] figure 1 It is a flow chart of a mode-by-mode voltage control method for wind farm clusters provided by the present invention. figure 1 In, the method specifically includes the following steps:

[0039] Step 1: Obtain the real-time voltage V of the grid-connected points of each wind farmi , the cluster control center will generate the real-time voltage V of the grid-connected point of the wind farm i and the voltage target value V issued by the dispatch center i-ref For comparison, let the voltage allowable fluctuation range be V D ; if |V i -V i-ref |≤V D , without voltage adjustment; if |V i -V i-ref |>V D , go to step 2;

[0040] Step 2: Calculate the current reactive power adjustable capacity of e...

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Abstract

The invention discloses a mold splitting type voltage control method for a wind power plant cluster, and belongs to the technical field of automatic voltage control of electrical power systems. According to the technical scheme, two control modes of a wind power plant are defined according to the voltage of a grid joint point and current reactive power regulation capacity of the wind power plant, and a wind power plant cluster control center under different control modes sends different control instructions to each wind power plant. The method carries out coordination control on other wind power plants in a cluster according to real-time sensitivity relations among the wind power plants of the wind power plant cluster when a certain wind power plant is insufficient in reactive power regulation capacity. The mold splitting type voltage control method for the wind power plant cluster can be integrated in a control system of the wind power plant cluster control center, and supplies supporting for voltage control of a regional power grid of the wind power plant cluster.

Description

technical field [0001] The invention belongs to the technical field of automatic voltage control of electric power systems, and in particular relates to a mode-by-mode voltage control method for wind farm clusters. Background technique [0002] The reactive power and voltage of wind farms is one of the important factors affecting the operation of wind farms and even the safe and stable operation of power grids. Reasonable and effective voltage control methods can ensure the voltage stability of wind farm clusters. In the early stage of wind power development, due to the small number of wind farms, small capacity and location at the end of the grid, the impact of the voltage problem is often limited to the grid-connected point of the wind farm itself, and has limited impact on the voltage on the grid side. However, with the large-scale development of wind power and the sharp increase in the capacity of wind farms, the installed capacity of wind farm clusters accounts for an ...

Claims

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Application Information

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IPC IPC(8): H02J3/16
CPCY02E40/30
Inventor 林俐丁魁赵会龙兰涛朱晨宸李庚银周明赵双潘险险李丹李亮玉
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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