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Coordinated control method for active power of photovoltaic power plant group

A photovoltaic power station and active power technology, which is applied in photovoltaic power generation, control/regulation systems, and electric variable adjustment, can solve problems such as power flow stability in dispatching and operating power systems, coordination of peak-shaving photovoltaic power stations, and impact on photovoltaic power generation capabilities. Simple and accurate power coordination control, optimized resource utilization, and reduced number of changes

Active Publication Date: 2015-09-23
STATE GRID CORP OF CHINA +2
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Problems solved by technology

After large-scale photovoltaic power plants are connected to the power grid, problems such as power system flow, stability, peak regulation, and coordination among multiple photovoltaic power plants will be brought to the dispatching operation of the power grid, which will affect the ability of the power grid to accept photovoltaic power generation.

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  • Coordinated control method for active power of photovoltaic power plant group
  • Coordinated control method for active power of photovoltaic power plant group
  • Coordinated control method for active power of photovoltaic power plant group

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Embodiment Construction

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0045] figure 1 It shows a flowchart of a method for coordinated control of active power of a photovoltaic power station group in an embodiment of the present invention; the present invention provides a method for coordinated control of active power of a photovoltaic power station group. Active power P i ; The specific steps are:

[0046] Step 1: According to the operation mode of the photovoltaic power station in the power system, obtain the maximum allowable photovoltaic power output value P of the power grid of the photovoltaic power station group max ;include:

[0047] ①: Manually set the grid allowable maximum photovoltaic power generation output value P through the parameter setting module max value;

[0048] ②: According to the active power P output by the photov...

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Abstract

The invention provides a coordinated control method for active power of a photovoltaic power station group. The method includes the following steps: firstly, acquiring a maximum allowable photovoltaic power generation output value Pmax of a power network; secondly, acquiring planed total output amount Pn_plan of the photovoltaic power station group; thirdly, regulating a planned output value Pi_plan of each photovoltaic power station; fourthly, acquiring the planned output value Pi_plan of each photovoltaic power station. Compared with the prior art, the coordinated control method for the active power of the photovoltaic power station group has the advantages that on the premise that the power network operates safely and stably, output plan of each photovoltaic power station is optimally configured in consideration of a principle of equality according to actual resource situation of each power station, and accordingly photovoltaic power generation output is maximized.

Description

technical field [0001] The invention relates to a photovoltaic power station power control method, in particular to a photovoltaic power station group active power coordinated control method. Background technique [0002] Photovoltaic power generation is a new energy generation technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. The solar cells are packaged and protected after being connected in series to form a large-area solar cell module, and then cooperate with power controllers and other components to form a photovoltaic power generation device. The photovoltaic power generation device transmits electric energy to the grid through an inverter, forming a grid-connected photovoltaic power generation system. At present, in the western region of my country, many large-scale photovoltaic power stations with a level of 100 megawatts have been built, and the total installed capacity of grid-conne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46G05F1/66
CPCY02E10/56
Inventor 赵亮曲立楠葛路明朱凌志陈宁赵大伟张磊钱敏慧施涛
Owner STATE GRID CORP OF CHINA
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