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Control system for participation of wind power plant in primary frequency modulation and implementation method

A technology for control systems and wind farms, applied in wind power generation, electrical components, circuit devices, etc.

Active Publication Date: 2017-03-22
BEIJING SIFANG JIBAO AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the limitations of single machine participation and how to use the inertia of wind turbines in the existing primary frequency modulation technology, the invention discloses a method for realizing wind farm participation in primary frequency modulation control

Method used

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  • Control system for participation of wind power plant in primary frequency modulation and implementation method
  • Control system for participation of wind power plant in primary frequency modulation and implementation method
  • Control system for participation of wind power plant in primary frequency modulation and implementation method

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Embodiment Construction

[0061] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0062] Such as figure 1 Shown is a schematic diagram of the structure of the wind farm participating in the primary frequency modulation control system. The system realizes the primary frequency modulation at the wind farm station level, and is composed of the wind farm station level active power coordination controller, specifically including the signal acquisition unit, the primary frequency modulation processing unit, the wind turbine inertia processing unit, the wind turbine inertia control unit, and the telecontrol communication unit, wave recording analysis unit, frequency perturbation unit, etc. The signal acquisition unit directly collects the bus frequency signal of the collection station through hard wiring; on the one hand, the telecontrol communication unit communicates and interacts with the wind farm monitoring sys...

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Abstract

The invention relates to a control system for participation of a wind power plant in primary frequency modulation and an implementation method. The controls system is composed of modules such as a wind power unit data acquisition unit, a wind power unit inertia calculation unit, a wind power unit inertia control unit, a wind power unit primary frequency modulation processing unit, a telecontrol communication control unit, a wave recording and analyzing unit and a frequency disturbance unit. According to the invention, participation in primary frequency modulation of a power grid is performed in a mode of wind power plant station-level active power coordination control in allusion to actual characteristics of the new energy resource of wind power, not only frequency droop control is considered, the rotary inertia of a wind power unit is utilized at the same time, output of the wind power unit is increased when the system frequency fluctuates and exceeds the threshold, participation in primary frequency modulation is performed quickly within a certain time under the condition of not increasing additional energy storage equipment, the action of a fan is played to the maximum degree, and purposes of reducing the amplitude of variation in system frequency and participating in quick recovery of the power grid frequency are achieved. The control system provided by the invention is applicable to application occasions in which the wind power plant participates in primary frequency modulation of a system.

Description

technical field [0001] The invention belongs to the technical field of electric power system control, and in particular relates to a realization scheme for a wind farm to participate in primary frequency regulation. Background technique [0002] With the rapid development of wind power generation, the proportion of wind power in the power system continues to increase. After solving the problems of low voltage ride-through and asymmetrical faults in the operation of wind turbines, wind farms are required to participate in primary frequency regulation of the power system to maintain power The safe and stable operation of the system, tapping the active power and frequency control potential of wind farms, and providing auxiliary services to the power system have become hot issues in the field of wind power generation in various countries in the world. For example, Canada requires wind turbines to provide 5% of the installed capacity of wind farms. Reserve capacity , lasts 10 sec...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02J3/38
CPCH02J3/24H02J3/386Y02E10/76
Inventor 武晋辉汪一乔真连倩
Owner BEIJING SIFANG JIBAO AUTOMATION
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