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Distributed AGC control method for interconnected power grid after wind power centralized access

A technology of interconnected power grids and control methods, applied in the field of control, can solve problems such as the inability to absorb wind power and the lack of adjustment capabilities of local power grids

Active Publication Date: 2016-09-21
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention fully develops the power mutual assistance function between the control areas of the interconnected grid, and solves the problem that the wind power cannot be accommodated due to the lack of adjustment ability of the local grid

Method used

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  • Distributed AGC control method for interconnected power grid after wind power centralized access
  • Distributed AGC control method for interconnected power grid after wind power centralized access
  • Distributed AGC control method for interconnected power grid after wind power centralized access

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Embodiment Construction

[0091] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0092] Such as figure 1 , the distributed AGC controller is mainly composed of three parts: the wind power-non-wind power control area coordination decision maker, the wind power control area controller, and the non-wind power control area controller.

[0093] Such as figure 2 , the present invention provides a distributed AGC control method for an interconnected power grid after centralized wind power access, the method comprising the following steps:

[0094] Step 1: The coordination decision maker in the wind power-non-wind power control area determines the wind power fluctuation balance responsibility coefficient matrix;

[0095] Step 2: The controller of the wind power control area determines the total adjustment amount of AGC in the wind power control area according to the wind power control area's responsibility coefficient for wind power fluctuatio...

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Abstract

The invention provides an interconnected network distribution type AGC control method used after wind and power centralized access. The method includes the following steps that a wind power-non-wind-power control area coordination decision-making device determines a wind power fluctuation balance responsibility coefficient matrix; a wind power control area controller determines the AGC total regulation amount of a wind power control area according to wind power fluctuation balance responsibility coefficients for the wind power control area to bear control areas of the wind power control area, and the AGC total regulation amount is allocated to AGC units to be executed; a non-wind-power control area controller determines the AGC total regulation amount of a non-wind-power control area according to wind power fluctuation balance responsibility coefficients for the non-wind-power control area to bear control areas of the non-wind-power control area, and the AGC total regulation amount is allocated to the AGC units to be executed. Due to the method, the power mutual assistance effect between the control areas of an interconnected network is given full play to, and the problem that because of adjusting capacity deficiency of a local power grid, wind and power cannot be absorbed is solved.

Description

technical field [0001] The invention relates to a control method, and specifically designs a distributed AGC control method for an interconnected power grid after wind power is centrally connected. Background technique [0002] At present, wind power has entered a stage of rapid development in my country, and its grid-connected capacity and installed capacity have ranked first in the world. After large-scale wind power is connected to the grid, the random and intermittent characteristics of wind power output make the load frequency (LFC) control of the interconnected grid not only need to balance load fluctuation power, but also need to balance the irregular fluctuation of "negative" load from wind power. The source-load bilateral fluctuation brings new challenges to the AGC control of the load frequency (LFC) of the grid. [0003] The current AGC control adopts the partition control mode. In the interconnected power grid, the AGC control mode of each control area usually ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/24H02J3/386Y02E10/76
Inventor 单茂华田伟鄢蜜昉严春华姚建国
Owner STATE GRID CORP OF CHINA
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