A method and system for time-sharing power supply of electrical equipment based on a photovoltaic system and a medium

Abstract

The present application relates to the photovoltaic technical field, especially to a kind of photovoltaic system-based electrical equipment time-sharing power supply method, computer readable storage medium and photovoltaic system.The photovoltaic system-based electrical equipment time-sharing power supply method, the actual use power of each electrical equipment currently accessed is monitored in real time, if the sum of the actual use power of all electrical equipment currently reaches the first threshold of the total power generation of the photovoltaic system currently, then with preset priority, the minimum power is provided for the electrical equipment with frequency conversion mark in turn, until the sum of the actual use power of all electrical equipment falls to not higher than the second threshold of the total power generation of the photovoltaic system currently.The photovoltaic system-based electrical equipment time-sharing power supply method can make full use of photovoltaic system power generation electric energy, and can reduce standby loss of photovoltaic system;Increase the safety and reliability of photovoltaic system;Ensure the service life of photovoltaic cell module.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic technology, in particular to a method for time-sharing power supply of electrical equipment based on a photovoltaic system, a computer readable storage medium and a photovoltaic system. BACKGROUND

[0002] Charging is scattered in rural areas, and the operation of electric vehicle photovoltaic charging stations faces challenges from the unevenness of charging demand in space and time, the variability, randomness and intermittency of photovoltaic power generation and other aspects. Therefore, more families using electric vehicles tend to arrange small household photovoltaic systems to supply power to electric vehicles and other electrical equipment. However, rural families usually do not understand the working principle and mode of photovoltaic systems, and often directly use the factory settings of the equipment. The working condition of the photovoltaic system does not match the actual situation of the household electrical equipment, and the photovoltaic system cannot fully utilize the generated power, resulting in unnecessary waste of electrical energy. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a method for time-sharing power supply of electrical equipment based on a photovoltaic system, which can fully utilize the generated power of the photovoltaic system.

[0004] In order to solve the above technical problems, in a first aspect, the present application provides a method for time-sharing power supply of electrical equipment based on a photovoltaic system, comprising the following steps:

[0005] The electrical equipment identification step identifies the power consumption information of the currently connected electrical equipment, which includes a variable frequency mark and a demand power;

[0006] The electrical equipment access step calculates the power range for supplying power to the electrical equipment if the electrical equipment has a variable frequency mark, records the maximum power and the minimum power, and obtains the actual use power of the real-time connected electrical equipment to supply power to the electrical equipment detected by the actual use power;

[0007] The time-sharing power supply step real-time monitors the actual use power of each electrical equipment currently connected, and if the sum of the actual use power of all electrical equipment currently connected reaches a first threshold value of the total power generated by the photovoltaic system at present, the minimum power is provided to the electrical equipment with a variable frequency mark in a predetermined priority order until the sum of the actual use power of all electrical equipment is reduced to not higher than a second threshold value of the total power generated by the photovoltaic system at present.

[0008] Further, if the difference between the first threshold value and the second threshold value is less than a preset value, the second threshold value is adjusted to a value obtained by reducing the first threshold value by the preset value.

[0009] Further, the first threshold value is 80%-120%, and the second threshold value is 70%-90%.

[0010] Further, the first threshold value and the second threshold value are adjusted synchronously.

[0011] Further, time-of-use charging data is acquired, and in the time-of-use power supply step, electricity tariff is calculated according to the time-of-use charging data, and if the electricity tariff is lower than a preset degree, the first threshold value is increased by a preset proportion.

[0012] Further, the time-of-use charging data is power grid charging information of a region where the photovoltaic system is located, which is acquired in advance.

[0013] Further, the priority is set in advance according to the electricity-using equipment.

[0014] Further, the priority is set in real time according to an input operation.

[0015] In a second aspect, the present application provides a computer readable storage medium, which stores an executable computer program, and the computer program is executed to realize the above-mentioned time-of-use power supply method for electricity-using equipment based on a photovoltaic system.

[0016] In a third aspect, the present application provides a photovoltaic system, which comprises a processor and a computer readable storage medium, the computer readable storage medium is the computer readable storage medium as mentioned above, and the processor executes the computer program in the computer readable storage medium to realize the above-mentioned time-of-use power supply method for electricity-using equipment based on a photovoltaic system.

[0017] Advantages: The time-of-use power supply method for electricity-using equipment based on a photovoltaic system can monitor actual use power of each electricity-using equipment connected in real time, and if the sum of actual use power of all the electricity-using equipment reaches a first threshold value of total power generated by the photovoltaic system, the electricity-using equipment with a variable frequency label is provided with minimum power in a preset priority until the sum of actual use power of all the electricity-using equipment is reduced to a second threshold value of total power generated by the photovoltaic system. The time-of-use power supply method for electricity-using equipment based on a photovoltaic system can make full use of power generated by the photovoltaic system, reduce standby loss of the photovoltaic system, increase safety and reliability of the photovoltaic system, and ensure service life of photovoltaic cell components. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a flowchart of the time-of-use power supply method for electricity-using equipment based on a photovoltaic system of the present application. DETAILED DESCRIPTION

[0019] The present application will be further described in detail below in combination with specific embodiments.

[0020] The photovoltaic system provided in the embodiment comprises a solar charging panel, a transformer box, a processor and a computer readable storage medium. The surface of the solar charging panel is a photovoltaic panel assembly, and the solar charging panel is provided with a power supply interface. The photovoltaic panel assembly generates electric energy when receiving solar energy, and supplies power from the power supply interface. The transformer box is provided with a power taking interface, a power storage device and a power supply slot. One end of the adapter wire is electrically connected to the power supply interface of the solar charging panel, and the other end is electrically connected to the power taking interface of the transformer box. The electric energy generated by the photovoltaic panel assembly is transmitted from the power supply interface of the solar charging panel to the power taking interface of the transformer box through the adapter wire, and the transformer box takes power from the power taking interface and stores it in the power storage device. When there is a power supply requirement of a power consuming device, the power taking plug of the power consuming device is inserted into the power supply slot, and the transformer box can supply power to the power consuming device through the power supply slot. The computer readable storage medium of the photovoltaic system stores an executable time-sharing power supply program (i.e. a computer program), and the processor runs the time-sharing power supply program to realize the time-sharing power supply method of the power consuming device based on the photovoltaic system as shown in Figure 1

[0021] The execution process of the time-sharing power supply method of the power consuming device based on the photovoltaic system is described in detail below.

[0022] The power consuming device identification step identifies the power consumption information of the currently connected power consuming device, which includes a variable frequency mark and a demand power. The photovoltaic system supplies power to the power consuming device in time-sharing mode. For example, there are two power consuming devices, an air conditioning unit and an electric vehicle. The air conditioning unit continuously consumes power in a preset time period, and the electric vehicle generally charges in idle time if the electric energy is insufficient.

[0023] The power consuming device access step calculates the power range for the power consuming device with the variable frequency mark, records the maximum power and the minimum power, and obtains the actual use power of the real-time connected power consuming device to supply power to the power consuming device. The power supply of the power consuming device adopts grid-connected power supply. The sunlight energy is weak in the morning and evening, and the photovoltaic system generates less power. The energy for charging the electric vehicle mainly comes from the power grid. At noon, the electric energy generated by the photovoltaic power generation reaches the peak value, and the energy provided by the power grid system is the most sufficient. The electric vehicle charges at this moment, which can fully utilize the energy, reduce the standby loss of the photovoltaic system, increase the safety and reliability of the photovoltaic system, and ensure the service life of the photovoltaic cell assembly

[0024] The time-sharing power supply step, the photovoltaic system real-time monitors the actual use power of each power consuming device currently connected, and if the sum of the actual use power of all the power consuming devices currently connected reaches the first threshold value of the total power generated by the photovoltaic system, the minimum power is provided to the power consuming device with the variable frequency mark in a preset priority order until the sum of the actual use power of all the power consuming devices is reduced to not higher than the second threshold value of the total power generated by the photovoltaic system.

[0025] ​The first threshold value is 80%-120%, and the second threshold value is 70%-90%. The first threshold value and the second threshold value are adjusted synchronously, and the second threshold value is increased by 5% when the first threshold value is increased by 10%. When the first threshold value is 80%, the second threshold value is 70%; when the first threshold value is 90%, the second threshold value is 75%; when the first threshold value is 100%, the second threshold value is 80%; when the first threshold value is 110%, the second threshold value is 85%; and when the first threshold value is 120%, the second threshold value is 90%. Moreover, if the difference between the first threshold value and the second threshold value is less than a preset value, the second threshold value is adjusted to a value obtained by reducing the first threshold value by the preset value, and the preset value is 300 W.

[0026] The priority is set in advance according to the electric equipment or set in real time according to an input operation. The photovoltaic system is communicatively connected to a cloud operation module, and a user can connect to the cloud operation module through a mobile phone or other terminal equipment, set the priority of the electric equipment in advance on an operation panel of the cloud operation module, or set / modify the priority of the electric equipment in real time.

[0027] The photovoltaic system calculates the electricity cost according to time-of-use billing data, and the time-of-use billing data is power grid billing information of an area where the photovoltaic system is located and is obtained in advance. If the current electricity cost is lower than a preset degree, the first threshold value is increased by a preset proportion, and the photovoltaic system can be fully utilized to generate electricity when the cost is high.

[0028] The above is only an embodiment of the application, and does not limit the patent protection range. A person skilled in the art can make non-essential changes or substitutions on the basis of the application, and still fall within the patent protection range.

Claims

1. A method for time-sharing power supply of electrical equipment based on a photovoltaic system, the photovoltaic system supplying power to a plurality of electrical equipment, the method comprising the steps of: acquiring a current total power generated by the photovoltaic system in real time, wherein the method is characterized in that The method comprises the following steps: A power utilization information identification step for identifying the power utilization information of the currently connected power utilization device, the power utilization information comprising a variable frequency flag and a demand power; A power utilization device connection step for calculating the power range for the power utilization device if the power utilization device has the variable frequency flag, recording the maximum power and the minimum power, obtaining the actual use power of the real-time connected power utilization device, and supplying power to the power utilization device according to the detected actual use power; A time-sharing power supply step for real-time monitoring the actual use power of each power utilization device currently connected, providing the minimum power to the power utilization device with the variable frequency flag in a preset priority order if the sum of the actual use power of all the power utilization devices currently connected reaches a first threshold of the total power generated by the photovoltaic system, and reducing the sum of the actual use power of all the power utilization devices to not higher than a second threshold of the total power generated by the photovoltaic system; the first threshold and the second threshold are synchronously adjusted, the first threshold is increased by 10% and the second threshold is synchronously increased by 5% for each 10% increase of the first threshold; if the difference between the first threshold and the second threshold is less than a preset value, the second threshold is adjusted to a value obtained by reducing the first threshold by the preset value.

2. The photovoltaic system-based power supply time division method for electric devices according to claim 1, wherein The first threshold is 80%-120%, and the second threshold is 70%-90%.

3. The method of claim 1, wherein the photovoltaic system-based power supply method is characterized by, A time-sharing charging data obtaining step for obtaining time-sharing charging data, and calculating the power utilization cost according to the time-sharing charging data in the time-sharing power supply step, and increasing the first threshold by a preset proportion if the power utilization cost is lower than a preset degree.

4. The method of claim 3, wherein the photovoltaic system-based power supply time sharing method is characterized by, The time-sharing charging data is the power grid charging information of the region where the photovoltaic system is located, which is obtained in advance.

5. The method of claim 1, wherein the photovoltaic system-based power supply method is characterized by, The priority is set in advance according to the power utilization device.

6. The photovoltaic system-based power supply time division method for electric devices according to Claim 1, wherein The priority is set in real time according to an input operation.

7. A computer readable storage medium storing a computer program, characterized in that, The computer program can be executed by the processor to realize the time-sharing power supply method for the power utilization device based on the photovoltaic system according to any one of claims 1-6.

8. A photovoltaic system comprising a processor, characterized by, The computer readable storage medium according to claim 7 is also provided, and the computer program on the computer readable storage medium can be executed by the processor.

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