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A wind-storage combined system and control method for decentralized wind power

A technology of wind-storage integration and control method, which is applied in wind power generation, electrical components, circuit devices, etc., to achieve the effect of improving the reliability of grid connection

Active Publication Date: 2021-07-20
BEIJING TIANRUN NEW ENERGY INVESTMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the coupling problem of active power and reactive power after distributed wind power is connected to the distribution network, the traditional wind power construction method that only considers active power and reactive power to adjust grid frequency and grid voltage is no longer suitable for distributed wind power.

Method used

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  • A wind-storage combined system and control method for decentralized wind power
  • A wind-storage combined system and control method for decentralized wind power
  • A wind-storage combined system and control method for decentralized wind power

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Embodiment Construction

[0024] The present invention may have various modifications and various embodiments, and it should be understood that the present invention is not limited to these embodiments, but includes all modifications, equivalents and replacements within the spirit and scope of the present invention. For example, the order of operations described herein are examples only, and are not limited to those orders set forth herein, but, except for operations that must occur in a particular order, may be as would be after understanding the disclosure of the present application. Clearly changed that way. Also, descriptions of features that are known in the art may be omitted for increased clarity and conciseness. The terms used in the example embodiments of the present invention are for describing specific embodiments only, and are not intended to limit the example embodiments. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly dictat...

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Abstract

Provided are a wind-storage combined system and control method for distributed wind power. The control method includes: when the power grid is in a stable state, determining the access grid level, and obtaining the measured voltage and frequency values ​​of the grid and comparing them with the determined voltage reference value and frequency reference value under the determined grid access level, to Calculate the voltage deviation and frequency deviation; determine the adjustment priority according to the voltage deviation, frequency deviation and access grid level; calculate the first additional active power for adjusting the frequency deviation based on the frequency deviation; calculate the first additional active power for adjusting the voltage deviation based on the voltage deviation The second additional active power and the second additional reactive power; according to the adjustment priority, the first additional active power, the second additional active power and the second additional reactive power, calculate the third additional active power and The third additional reactive power; based on the third additional active power and the third additional reactive power, control the output power of the combined wind storage system.

Description

technical field [0001] The following description relates to the field of wind power, specifically, a wind-storage combined system and control method for distributed wind power. Background technique [0002] With the advancement of my country's energy transformation and reform, renewable energy such as wind power has gradually replaced traditional fossil energy and has become the main direction of energy development. The traditional wind power construction mainly utilizes the abundant endowment of wind power resources in the region, and focuses on large-scale centralized wind power development. Serious wind curtailment has restricted the development of the wind power industry. [0003] With the development of wind power technology, the development of wind turbines suitable for low wind speeds has been gradually completed, and wind power construction has shifted to low and medium wind speed areas. The development of decentralized wind power has become an important direction f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46H02J3/38
CPCH02J3/386H02J3/46Y02E10/76
Inventor 高超姚秀萍王晓东
Owner BEIJING TIANRUN NEW ENERGY INVESTMENT CO LTD
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