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A device for improving the power quality of new energy power generation

A power quality and new energy technology, applied in the field of new energy power generation, can solve the problems of new energy that cannot be connected to the grid, energy waste, grid instability, etc., and achieve good power generation efficiency.

Active Publication Date: 2020-11-10
HEBEI JIANTOU NEW ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the intermittence and instability of wind power and photovoltaic itself, it will bring harmonics, resulting in the instability of the power grid. As a result, a large number of new energy sources cannot be well connected to the power grid, resulting in energy waste.

Method used

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  • A device for improving the power quality of new energy power generation
  • A device for improving the power quality of new energy power generation
  • A device for improving the power quality of new energy power generation

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Embodiment Construction

[0026] The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and cannot be interpreted as limiting the protection scope of the application. The above application content makes some non-essential improvements and adjustments to this application.

[0027] Such as figure 1 As shown, this application proposes a device for improving the power quality of new energy power generation, including a wind generator, a photovoltaic cell, an energy storage battery, a control module, and a switch; the wind generator is connected to the grid through a transformer, and the photovoltaic The battery is connected to the grid through a DC / AC converter; the switch receives the control instructions from the control module to determine the number of wind power generators and photovoltaic cells connected to the grid; the control mo...

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Abstract

The invention relates to a device used for improving the power quality of new energy power generation. The device comprises a wind generator, a photovoltaic cell, an energy storage battery, a controlmodule and a switch. The wind generator is connected with a power grid through a transformer. The photovoltaic cell is connected with the power grid through a DC / AC converter. The switch receives thecontrol command of the control module and determines the number of the wind generator and the photovoltaic cell, which access the power grid. The control module detects environmental factors through sensors to determine wind coefficients and lighting coefficients, receives the current demand value of the power grid, determines the number of the wind generator and the photovoltaic cell, calculatesharmonic current according to the number, and carries out harmonic compensation. The device provided by the invention can quickly carry out harmonic control of new energy power generation, maintains stable operation of the power grid, and improves the power quality.

Description

technical field [0001] The application belongs to the technical field of new energy power generation, and in particular relates to a device for improving the power quality of new energy power generation. Background technique [0002] The power quality monitoring system is an important means to discover and evaluate power quality problems in time. With the massive grid-connection of large-scale intermittent new energy represented by wind power and photovoltaics, and the wide application of loads such as high-speed rail, rail transit, and electric vehicles characterized by power electronic control technology, coupled with traditional large-scale electric furnaces and steelmaking furnaces, The development momentum of impact load is unabated, and a large number of power quality disturbance sources have directly or indirectly affected the safe and reliable operation of the distribution network. In order to meet the requirements of the development of smart grids under the new sit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01H02J3/46H02J3/38
CPCH02J3/01H02J3/383H02J3/386H02J3/46Y02E10/56Y02E10/76Y02E40/40
Inventor 谭建鑫胡家兵井延伟赵高琳
Owner HEBEI JIANTOU NEW ENERGY CO LTD