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Net source coordination oriented large wind farm closed-loop control system

A large-scale wind farm, closed-loop control technology, used in wind power generation, single-grid parallel feeding arrangement, etc., to achieve controllability and solve the problem of communication delay.

Inactive Publication Date: 2012-08-22
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Net source coordination oriented large wind farm closed-loop control system
  • Net source coordination oriented large wind farm closed-loop control system
  • Net source coordination oriented large wind farm closed-loop control system

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Embodiment Construction

[0021] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings and specific embodiments.

[0022] In order to realize the highly controllable wind farm, the invention is based on the logic of wind farm cluster control, wind farm centralized control and wind turbine autonomous control in the prior art, and it is envisioned to establish a "horizontal integration" control system at the wind farm level. The control system can "bundle" the behaviors of all units, and all units in the wind farm can quickly respond to unified control instructions, making the power controllability of the entire wind farm similar to that of a single wind turbine.

[0023] Such as figure 1 Shown is the modern wind farm fleet control structure on which the present invention is based. The control network uses a high-speed field bus, and the characteristic information of the power grid is sent to the host computer through the field...

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Abstract

The invention discloses a net source coordination oriented large wind farm closed-loop control system, which comprises a plurality of groups of fans constituting a wind farm fleet, routers for connecting each group of fan into the fleet, a terminal, a power grid local information measuring unit, a centralized control platform and a conventional power plant; the constituting units are connected by field buses in the system to carry out data transmission, the terminal is used as a processing terminal of the fans and the centralized control platform and is connected with the centralized control platform through a bus adapter card, a controller of the centralized control platform is arranged near a wind farm booster station, the local measured information of a power grid needing measurement includes boost bus voltage and frequency, the controller sends out transient state active and reactive control signals according to measurement information and combing field grid transient state coordination control, the control signals are sent to each fan through rapid field buses to realize active and reactive rapid adjustment of the wind farm fleet. Compared with the prior art, the large wind farm closed-loop control system disclosed by the invention realizes wind farm closed-loop control, and solves the problem of coordination of wind energy net source used as an accessing power source in wind power integration.

Description

technical field [0001] The invention relates to wind power grid-connected control technology, in particular to a large-scale wind farm control system. Background technique [0002] Among various renewable energy sources, wind power energy is a hotspot of global attention. Wind power is characterized by intermittent, fluctuating and random nature, and its output fluctuates in a large range and at a relatively fast speed. Without the support of energy storage equipment, it is impossible to control its active and reactive power output like other conventional power sources, which brings great pressure to the power system dispatching. The power system is composed of power sources and grids. The coordination of power sources and grids is very important no matter from the perspective of dispatch management or system dynamics. Especially since wind farms are connected to the power grid, the problem of grid source coordination has become more prominent, and there are many difficult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCY02E10/763Y02E10/76
Inventor 陈卓郝正航
Owner GUIZHOU UNIV
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