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Wind power cluster integrated frequency control method and system based on hierarchical distributed model predictive control

A technology of model predictive control and wind power cluster, applied in wind power generation, electrical components, circuit devices, etc.

Pending Publication Date: 2019-01-08
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0004] The present invention proposes a wind power cluster integrated frequency control method and system based on layered distributed model predictive control to solve the problem of how to control the integrated frequency of wind power clusters

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  • Wind power cluster integrated frequency control method and system based on hierarchical distributed model predictive control
  • Wind power cluster integrated frequency control method and system based on hierarchical distributed model predictive control
  • Wind power cluster integrated frequency control method and system based on hierarchical distributed model predictive control

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[0056] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0057] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a wind power cluster integrated frequency control method based on hierarchical distributed model predictive control, which comprises the following steps of: establishing a hierarchical distributed model predictive control H-DMPC controller; The multi-time scale coordinated variable granularity frequency control framework of wind power cluster is established in the tertiaryfrequency modulation layer, the secondary frequency modulation layer and the primary frequency modulation layer. The rolling optimization models are established on the spatial scale in the tertiary frequency modulation layer, the secondary frequency modulation layer and the primary frequency modulation layer respectively. In the aspect of wind power prediction error correction, the feedback correction link is established to realize the closed-loop operation of integrated frequency control through the feedback correction of grid operation state and prediction data. The invention establishes a feedback correction link according to the real-time operation state of the system, realizes the closed-loop operation of the integrated frequency control strategy, and the proposed control strategy caneffectively realize the wind power cluster to participate in the system frequency modulation, and can consider both the economy and the safety objectives of the system.

Description

technical field [0001] The present invention relates to the technical field of frequency stability control for integrating energy sources into power grids, and more specifically, to a comprehensive frequency control method and system for wind power clusters based on hierarchical distributed model predictive control. Background technique [0002] With the shortage of fossil energy and the increasingly prominent problems of environmental pollution, wind power, as a clean power generation method with relatively mature technology, has continuously increased its penetration rate in the power grid, and has completed the energy replacement of some old traditional thermal power units. However, wind power has the nature of fluctuating and uncertain output, and the operation technology of the power electronic converter interface of wind turbines decouples the mechanical and electrical parts, so that wind power cannot respond to grid frequency changes in a timely manner through the inhe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/38H02J3/48
CPCH02J3/386H02J3/24H02J3/48H02J2203/20Y02E10/76
Inventor 孙舶皓汤涌仲悟之蓝海波刘辉叶林翟丙旭王冠楠
Owner CHINA ELECTRIC POWER RES INST
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