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Light voltage and wind power integrated networking device with the reactive power compensation and harmonious administration function

A harmonic control and functional technology, applied in reactive power compensation, harmonic reduction device, reactive power adjustment/elimination/compensation, etc., can solve the problems of slow development and high application cost

Inactive Publication Date: 2007-08-15
刘建政 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Another major factor limiting photovoltaic power generation and wind power generation is the high application cost. At present, the cost of solar cells has not yet been reduced to the stage of large-scale application. Most photovoltaic grid-connected power stations in the world rely on government funding, and their development is slow. Wind power generation In the application of the device, there is also the same problem

Method used

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  • Light voltage and wind power integrated networking device with the reactive power compensation and harmonious administration function
  • Light voltage and wind power integrated networking device with the reactive power compensation and harmonious administration function
  • Light voltage and wind power integrated networking device with the reactive power compensation and harmonious administration function

Examples

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Effect test

Embodiment 1

[0043] Example 1: Photovoltaic - two level - three phase or four phase

[0044] See accompanying drawings 3 and 4. The device consists of one or more groups of photovoltaic array power supplies, each group of photovoltaic array power supplies is connected to a type I power modulator, a DC bus link composed of electrolytic capacitor banks, a three-phase or four-phase two-level inverter 810, 1100, a three-phase or four-phase grid-connected reactor 3, 8, a three-phase or four-phase circuit breaker 2, 7, a data acquisition and logic controller 9, 15.

[0045] In the device, each photovoltaic array power supply is connected to a type I power modulator, and the output end of the power modulator is connected to the DC bus link. In the multi-power supply mode, each power supply and the power supply modulator are integrated 600 , and their outputs are connected in parallel to the DC bus link. The DC bus links are connected to the DC side of three-phase or four-phase two-level inverte...

Embodiment 2

[0054] Example 2: Photovoltaic-three-level-three-phase or four-phase

[0055] See accompanying drawings 8 and 9. Compared with Embodiment 1, the second embodiment of the present invention differs in that the three-phase or four-phase inverters are three-level structures 820 and 1200, as shown in Figure 10 and Figure 11 respectively. All the other parts are identical with embodiment 1.

Embodiment 3

[0056] Example 3: Wind power - two levels - three-phase or four-phase

[0057] See accompanying drawing 12, Fig. 13. The device consists of one or more groups of wind generators, each group of wind generators is connected to a type II power modulator, a DC bus link composed of electrolytic capacitor banks, and a three-phase or four-phase two-level inverter 810 , 1100, a three-phase or four-phase grid-connected reactor 3,8, a three-phase or four-phase circuit breaker 2,7, a data acquisition and logic controller 9,15.

[0058] In the device, each wind power generator power supply is connected to a type II power supply modulator, and the output end of the power supply modulator is connected to the DC bus link. In the multi-power supply mode, each power supply and the power supply modulator are integrated 700, and their outputs are connected in parallel Link with the DC bus. The DC bus links are connected to the DC side of the three-phase or four-phase two-level inverters 810 an...

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PUM

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Abstract

The photovoltaic and wind-power uniform interconnected equipment with reactive compensation and harmonic wave processing comprises: at least a clean energy power, at least one power modualtor, a dc busbar loop, a three- or four-phase multilevel inverter, one three- or four-phase interconnected reactor, a three- of four-phase breaker, and a data collection and logic controller. This invention can interconnect both the photovoltaic power and wind-power source, and every power can realize the maximal power point track. This invention can compensate the harmaci wave in 0-30 times.

Description

technical field [0001] The invention relates to the design of a multifunctional solar and wind energy unified grid-connected device, belonging to the technical field of multi-functional clean energy grid-connected devices. Background technique [0002] Energy and environment are urgent problems to be solved for the survival and development of human beings today. Conventional energy is mainly coal, oil, and natural gas. Such fossil energy not only has limited resources, but also causes serious air pollution. Therefore, the development of a diverse and composite energy structure based on unlimited resources and clean and clean renewable energy has been highly valued by countries all over the world. Both solar energy and wind energy are clean renewable energy sources. The development of photovoltaic power generation and wind power generation technologies and their wide application play an important role in alleviating the shortage of conventional energy sources and reducing en...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/18H02J3/01
CPCY02E10/763Y02E40/26Y02E10/58Y02E10/563Y02E40/30Y02E10/56Y02E10/76Y02E40/20Y02E40/40
Inventor 刘建政刘树
Owner 刘建政
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