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Counting method of working days of photovoltaic equipment

A technology of photovoltaic equipment and counting method, which is applied in the registration/indication of machine work, registration/indication, instruments, etc., can solve the problems of inaccurate data statistics, inability to distinguish the working status of photovoltaic equipment, etc. Effect

Active Publication Date: 2021-08-27
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the common calculation method is to use the real-time clock of the system, but the use of the real-time clock of the system has certain limitations on the working days of the photovoltaic equipment, because the real-time clock cannot distinguish the working status of the photovoltaic equipment, and when the photovoltaic equipment is not working, the real-time clock is also In the corresponding counting, which will result in inaccurate statistics

Method used

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  • Counting method of working days of photovoltaic equipment

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Embodiment

[0018] In this embodiment, a method for counting the working days of photovoltaic equipment is proposed by taking advantage of the large day-night variation of photovoltaic voltage. This embodiment includes a system status flag Flag and a counter Day. Wherein, the system status flag Flag is used to identify day or night, when it is daytime, Flag=1, and when it is night, Flag=0; Day is used to accumulate and store the total number of working days of the system.

[0019] According to the actual working conditions of photovoltaic panels and solar lighting intelligent control systems, the upper limit voltage threshold is set to Vth1, which is used to determine that the external environment is daytime, and the lower limit voltage threshold is Vth2, which is used to determine that the external environment is night, and the real-time sampling voltage of photovoltaic panels Vsample is Vpv. Among them, the upper limit voltage threshold Vth1 is generally 5V7V, and the lower limit voltag...

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Abstract

The invention discloses a method for counting the working days of photovoltaic equipment, which includes a system status flag Flag and a counter Day, the system status flag Flag is used to identify day or night, and the counter Day is used to accumulate and store the photovoltaic equipment The total number of working days of the equipment; the counting method includes: power on the system, program initialization parameters: system work, realize the accumulation of the working days of the photovoltaic equipment; the present invention compares the sampling voltage with the upper limit voltage threshold Vth1 and the lower limit voltage threshold Vth2 respectively, Combined with the value of the status flag bit Flag, the counting of the working days of the photovoltaic equipment is realized, which is simple and feasible, and can be widely used in photovoltaic products.

Description

technical field [0001] The invention relates to the technical field of photovoltaic applications, in particular to a method for counting working days of photovoltaic equipment. Background technique [0002] In recent years, with the rapid development of the economy, the requirements for environmental protection have become higher and higher, especially for industries with high pollution and high energy consumption. Therefore, clean solar energy has driven the rapid development of the photovoltaic industry, and related technologies and products have emerged in an endless stream. Photovoltaic energy storage and solar intelligent lighting are important application areas. [0003] Solar intelligent lighting systems usually include components such as lithium-ion energy storage batteries, BMS controllers, and LED lights. Among them, the BMS controller mainly completes lithium-ion battery management, system operation control and system operation status presentation, and the normal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C3/04
CPCG07C3/04
Inventor 吴达军
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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