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Reactive power configuration method for wind power base

A configuration method and wind power technology, applied in wind power generation, reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve the problems of wind turbine off-grid and increase system operating cost, etc.

Inactive Publication Date: 2015-02-11
SOUTHEAST UNIV
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Problems solved by technology

However, this algorithm does not consider that when the system fails or the voltage drops due to disturbances, large-scale wind turbines may be disconnected from the grid, which will further lead to system backup investment, and even take load shedding measures, which will greatly increase the operating cost of the system.

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  • Reactive power configuration method for wind power base
  • Reactive power configuration method for wind power base
  • Reactive power configuration method for wind power base

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Embodiment Construction

[0057] The present invention will be further described in detail below with reference to the accompanying drawings and examples. However, the invention is not limited to the examples given.

[0058] The invention mainly aims at the reactive power compensation configuration problem of the wind power base. For a single wind farm, multiple wind turbines can be equivalent to multiple wind farms with different operating conditions, so the research content of reactive power compensation configuration for a single wind farm and a wind power base is similar, so the method proposed by the present invention can also be used.

[0059] The present invention is used for reactive power compensation configuration of wind power bases. The wiring diagram of an actual power grid including wind power in China is as follows: figure 2 As shown, where LVRT is Low Voltage Ride Through LVRT (LowVoltageRideThrough).

[0060] Table 1 Voltage drop probability distribution

[0061]

[0062] In ord...

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Abstract

The invention provides a reactive power configuration method for a wind power base. Based on coordination of resources in a system such as adjustable spare capacity and an interruptible load, a reactive power configuration scheme for the wind power base is optimized by the aid of a genetic algorithm by considering various limitations of reactive power optimization of a wind power station and taking the minimum operation risk generated in a dynamic process after dropping of grid-connected point voltage of the wind power station as an optimal object. Compared with a minimum active power network loss configuration scheme frequently used by an existing wind power station, the reactive power configuration method has the advantages that the reactive power configuration capacity of the wind power base can be reduced, the active power spare capacity of the system is reduced, so that the operation cost of the system is reduced, various regulatory resources of the system can be sufficiently invoked, and steady state voltage level and transient voltage characteristics of a grid-connected point can be ensured.

Description

technical field [0001] The invention relates to a method for reactive power allocation of a wind power base, belonging to the technical field of wind power generation control in new energy power generation technology. Background technique [0002] In order to cope with the huge pressure caused by large-scale wind power access to the reactive power compensation configuration and safe and stable operation of the grid, the State Grid Corporation of China formulated the "Technical Regulations for Wind Farm Connected to the Grid" and "Technical Regulations for Wind Farm Reactive Power Configuration and Voltage Control", etc. Standardize the technical requirements for the operation of grid-connected wind farms, and clearly state that the most important requirements for reactive power configuration of wind farms are the reactive power capacity and fast response capability of wind farms. [0003] With the continuous increase of grid-connected wind power installed capacity, especiall...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18
CPCY02E10/763Y02E40/30Y02E10/76
Inventor 汤奕房婷婷
Owner SOUTHEAST UNIV
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