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Minitype intelligent bidirectional self-adaptation grid-connected photovoltaic power generation system and control method thereof

A grid-connected power generation and control method technology, which is applied in photovoltaic power generation, climate change adaptation, single-net parallel feeding arrangement, etc., can solve the problems of poor power supply stability and long response time

Active Publication Date: 2014-01-22
JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +3
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AI Technical Summary

Problems solved by technology

However, such systems have the characteristics of long response time of output power to load fluctuations and poor stability of power supply.

Method used

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  • Minitype intelligent bidirectional self-adaptation grid-connected photovoltaic power generation system and control method thereof
  • Minitype intelligent bidirectional self-adaptation grid-connected photovoltaic power generation system and control method thereof
  • Minitype intelligent bidirectional self-adaptation grid-connected photovoltaic power generation system and control method thereof

Examples

Experimental program
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Embodiment Construction

[0058] Such as figure 1 As shown, the small intelligent two-way self-adaptive photovoltaic grid-connected power generation system is composed as follows: photovoltaic panel matrix 1 with maximum power tracking function, combiner box 2 connected to the output terminal of photovoltaic panel matrix 1, respectively connected to the output terminal of combiner box 2 The battery pack controller 3, the inverter / rectification integrated converter 7, the DC load control switch 5, and the battery pack 4 connected to the battery pack controller 3, the battery pack controller 3 is used to control the battery switch status and The charging and discharging state of the battery is converted and controlled; the local DC load 6 connected to the DC load control switch 5 is respectively connected to the AC load control switch 8 and the local AC load 9 at the output end of the inverter and rectification integrated converter 7, and has an island detection function The grid-connected controller 1 i...

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Abstract

The invention discloses a minitype intelligent bidirectional self-adaptation grid-connected photovoltaic power generation system, which comprises a photovoltaic battery board matrix and a confluence box, wherein the output end of the output end of the confluence box is connected with a storage battery controller, an inversion / rectification integrated converter and a direct-current load control switch; the storage battery controller and the direct-current load control switch are connected with a storage battery set and a local direct-current load; the output end of a converter is connected with an alternating-current load control switch and an grid-connected controller; the output end of the alternating-current load control switch is connected with a local alternating-current load; each output end is connected with a conversion module; a voltage and current sampling conversion module is connected with a signal modulation circuit; the output end of a signal modulation circuit is connected with a DSP (digital signal processor); and each control end is connected with a PWM (pulse width modulation) interface. A control method of the minitype intelligent bidirectional self-adaptation grid-connected photovoltaic power generation system comprises parameter preparation control, power generation and power supply control. The system and the method have the advantages of good reliability, convenience in installation, operation and maintenance, high stability, strong adaptivity and high solar energy utilization ratio.

Description

technical field [0001] The invention belongs to a solar grid-connected power generation system, in particular to a small intelligent bidirectional self-adaptive photovoltaic grid-connected power generation system and a control method. Background technique [0002] With the development of economy and society, the shortage of fossil energy and the increasing pressure of environmental protection, all countries are actively discussing new energy, renewable energy, especially solar energy. Because solar energy has the advantages of unlimited reserves, universal existence, clean utilization and gradually emerging economy, it has become the most ideal alternative energy for human beings. Therefore, the research and development of solar power generation has become an energy strategic decision for countries all over the world to achieve sustainable development. In recent years, China's new energy power generation business has also developed rapidly. Due to China's vast territory, l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCY02E10/563Y02A30/60Y02E10/56
Inventor 张铁岩李艳龙张忠林孙秋野赵琰赵丹邓玮张相明杜士鹏
Owner JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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