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Hybrid power generation of wind-power generator and battery energy storage system

一种风力发电系统、风力发电装置的技术，应用在混合系统领域

Inactive Publication Date: 2008-07-30
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in a conventional hybrid system of a wind power generator and a power storage device, when the above-mentioned operation is performed to keep the output to the power system constant, the generated power fluctuates according to the state of charge of the storage battery or the change of the wind speed. The output state of the device does not necessarily control the system output to a certain output

Method used

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  • Hybrid power generation of wind-power generator and battery energy storage system
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  • Hybrid power generation of wind-power generator and battery energy storage system

Examples

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Embodiment 1

[0027] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0028] FIG. 1 is a diagram showing the configuration of a target hybrid system of a wind power generator and a power storage device. The hybrid system of the wind power generator and the power storage device is composed of the wind power generator 1 and the power storage device 2 connected to the power system 3, and the system control device 100 generally controls the wind power generator 1 and the power storage device 2 so that the system power PS for the specified value.

[0029] The wind power generator 1 includes: a windmill 11 that converts wind into rotational energy; a generator 12 that converts rotational energy into electrical energy; and a control device 13 . The generator 12 uses an induction type, a synchronous type, a permanent magnet type, or the like, and may be variable-speed driven by a power converter. The control device 13 has a function of limiting...

Embodiment 2

[0076] In this embodiment, the operation of the wind power generation power limiting unit 106 which is different from that in the first embodiment will be described. In addition, in this embodiment, the configuration other than the wind power generation power limiting unit 106 is the same as that of the first embodiment.

[0077] Another operation of the wind power generation power limiting unit 106 will be described using FIG. 9 . FIG. 9 shows the operation of limiting the output PW of the wind turbine generator 1 shaded in the figure by the output limit value PWLIM when the output PW of the wind turbine generator 1 is at the maximum value PWMAX during constant output operation or fluctuation suppression operation. .

[0078] At time T10, when the charging amount WB reaches the first maximum charging value WBMAX1, the limitation of the output PW of the wind power generator 1 starts. At time T11, since the output of power storage device 2 becomes zero due to wind power outpu...

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Abstract

A hybrid system using a wind-power generator and a battery energy storage system includes a unit to set a system constant output value, a unit to control power generated from the wind-power generator, a unit to gradually change an output target value between an output constant operation and a regulation control operation, and a control unit to secure a charged ampere-hour of a battery in the output constant operation.

Description

technical field [0001] The present invention relates to a hybrid system capable of achieving a constant output using a wind power generator and a power storage device, and a power control device. Background technique [0002] In recent years, the introduction of power generation devices using natural energy such as wind power generation and solar power generation has been promoted in the context of activities to protect the global environment. However, the generated power of these power generation devices fluctuates due to changes in natural conditions, so there is a concern that frequency fluctuations and voltage fluctuations will be adversely affected to the associated power system with the increase in the amount of introduction. As one of the countermeasures, there is proposed a method of simultaneously installing a power storage device in a natural energy power generation device to suppress fluctuations in its output. [0003] The target is a hybrid system of wind power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/14H02J7/32H02J7/34
CPCY02E10/723F03D7/042Y02E10/725H02J3/32Y02E10/563H02J3/383Y02E10/766H02J3/386F03D9/021Y02E10/763Y02E70/30Y02E40/10Y02E10/566F05B2270/301F03D7/028F03D9/11F03D9/25H02J2300/28H02J2300/24H02J3/381Y02E10/56Y02E10/72Y02E10/76
Inventor 川添裕成二见基生池田洋二佐藤义章
Owner HITACHI IND EQUIP SYST CO LTD
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