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Photovoltaic system control method, system and device and photovoltaic system

A photovoltaic system and control method technology, applied in the field of photovoltaic system control and photovoltaic system, can solve problems such as reverse current and large power grid power generation, and achieve the effect of preventing reverse current and improving the utilization rate of power generation

Pending Publication Date: 2022-03-11
ALTENERGY POWER SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there may be situations where the power generation of the grid is greater than the power consumption of the load, and reverse flow may occur

Method used

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Embodiment Construction

[0044] The core of the present invention is to provide a photovoltaic system control method, system, device and photovoltaic system, which can prevent reverse flow and improve the safety and reliability of the photovoltaic system during operation.

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] Please refer to figure 1 , figure 1 It is a schematic flow chart of a photovoltaic sy...

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Abstract

The invention discloses a photovoltaic system control method, system and device and a photovoltaic system.According to the scheme, the generating capacity of a generating device is adjusted in real time according to the generating capacity of the generating device and the electricity consumption of an electricity consumption device, when the difference value of the generating capacity and the electricity consumption is not within a preset range, it is judged that countercurrent possibly exists, and at the moment, the countercurrent situation is judged to exist; and the power generation amount of the power generation device is controlled to be reduced, so that the countercurrent phenomenon is prevented, the power generation utilization rate of the photovoltaic system is improved, and the safety and reliability in the working process are improved.

Description

technical field [0001] The invention relates to the field of new energy power generation, in particular to a photovoltaic system control method, system, device and photovoltaic system. Background technique [0002] When the solar photovoltaic system is working, the photovoltaic modules will generally work at the maximum power point, and accordingly, the inverter will also work at the highest possible power. However, there may be a situation where the power generation of the grid is greater than the power consumption of the load, and reverse flow may occur. However, solar photovoltaic systems do not allow backflow in some application scenarios, so it is necessary to provide a control method to prevent backflow. Contents of the invention [0003] The object of the present invention is to provide a photovoltaic system control method, system, device and photovoltaic system, which can prevent the phenomenon of reverse flow, improve the utilization rate of power generation of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/28
CPCH02J3/381H02J3/28H02J2300/24Y02E10/56Y02E70/30
Inventor 吴国良罗宇浩
Owner ALTENERGY POWER SYST
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