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Photovoltaic power generation system and turn-off device

A photovoltaic power generation system and switchgear technology, applied in photovoltaic power generation, photovoltaic power stations, circuit devices, etc., can solve the problems of threatening the life safety of firefighters, threatening the life safety of ambulance personnel, and increasing the difficulty of rescue personnel, and achieve high safety. and reliability effects

Inactive Publication Date: 2016-08-10
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the DC switch in the junction box in the photovoltaic array can only ensure that the inverter will not have DC voltage input. Once the wires from the photovoltaic array to the junction box are damaged and exposed due to natural disasters, it will increase the difficulty for rescuers. It even threatens the life safety of the ambulance personnel.
When a fire breaks out, the high-pressure water operated by the firefighters will come into contact with exposed wires with high voltage. Since the water has a certain conductivity, it will threaten the lives of firefighters.

Method used

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Embodiment Construction

[0027] Embodiments will now be described more fully with reference to the accompanying drawings. Embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concepts of the embodiments to this present disclosure. technical personnel in the field. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions may be omitted.

[0028] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, one skilled in the art will appreciate that the techniques of the present disclosure may be practiced without one or ...

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Abstract

The invention discloses a photovoltaic power generation system and a turn-off device. The photovoltaic power generation system comprises a photovoltaic array, a photovoltaic inverter, and a turn-off device electrically connected between the photovoltaic array and the photovoltaic inverter. When the photovoltaic inverter is closed or fails, the photovoltaic inverter generates a first control signal. The turn-off device receives the first control signal to disconnect the photovoltaic array and the photovoltaic inverter. The photovoltaic power generation system of the invention is of high security and reliability.

Description

technical field [0001] The invention relates to a safety shut-off technology, in particular to a photovoltaic power generation system capable of safe power-off and a shut-off device used in the photovoltaic power generation system. Background technique [0002] Photovoltaic power generation technology is now mature and has been widely used at home and abroad. The photovoltaic power generation system includes photovoltaic arrays, junction boxes and inverters. The photovoltaic array converts the received solar energy into DC power, and the inverter converts the DC power into the required AC power, which is integrated into the grid or directly supplied to customers. use. There is a DC switch in the junction box, which can control the input of the DC voltage of the inverter. [0003] The photovoltaic arrays connected in series and parallel have high voltage and energy. When an emergency (earthquake, fire, etc.) occurs, it is necessary to disconnect these photovoltaic arrays wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S10/00H02S40/34
CPCH01L31/02021H02S40/34H02J2300/24H02J3/381Y02E10/56H02J3/388
Inventor 朱选才翁炳文李彦龙
Owner DELTA ELECTRONICS INC
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