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Real-time control method and system for photovoltaic electric quantity

A real-time control system and real-time control technology, applied in photovoltaic power generation, greenhouse gas reduction, energy storage, etc., can solve problems such as increasing system operation and maintenance costs, affecting normal power output, and wasting power

Active Publication Date: 2016-03-02
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0004] However, this method in the prior art has obvious defects: additionally connecting relays, voltage acquisition circuits, and current acquisition circuits in the photovoltaic system will not only increase the operation and maintenance cost of the system, but also affect the normal output of electricity
In addition, when the relay is in the off state, the photovoltaic module is still absorbing solar energy and converting the absorbed solar energy into electric energy. Since the relay is in the off state, this part of the converted electric energy is wasted
[0005] In view of the above problems, no effective solution has been proposed

Method used

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Embodiment Construction

[0045] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0046] figure 1 It is a flow chart of a real-time control method for photovoltaic power provided by the embodiment of this application. Although the processes described below include multiple operations occurring in a particular order, it should be clearly understood that these processes may include more or fewer operations, which...

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Abstract

The invention provides a real-time control method and system for a photovoltaic electric quantity. The method comprises the following steps: acquiring power consumption of a load group within a preset time interval; monitoring generated energy of a photovoltaic module within the preset time interval; judging whether the generated energy of the photovoltaic module is excessive or not based on the power consumption and the generated energy; and when the generated energy of the photovoltaic module is excessive, storing the excessive generated energy in an energy storage cabinet. Through adoption of the real-time control method and system for the photovoltaic electric quantity provided by the invention, electric energy generated by the photovoltaic module can be utilized reasonably, and generated electric energy is not wasted.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a method and system for real-time control of photovoltaic power. Background technique [0002] At present, solar energy, as a low-carbon renewable energy, is booming around the world, and the number of photovoltaic systems installed in various countries is also increasing year by year. Photovoltaic systems are often composed of battery arrays, battery packs, controllers, and inverters. Among them, the cell array can absorb solar energy, and under the photovoltaic effect, the absorbed solar energy can be converted into electrical energy. The converted electric energy can be stored by the battery pack, so that it can supply power to the load at any time. The controller can prevent the battery pack from overcharging or over-discharging, so as to protect the life of the battery pack. Since the current output by the battery pack is all direct current, in practical applica...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28
CPCY02E10/56Y02E70/30
Inventor 王驰孙亚丽陈万兴刘萍姚勇韬
Owner GREE ELECTRIC APPLIANCES INC
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