CN117977774A - 5G base station optical storage integrated machine power supply system and power supply method - Google Patents
5G base station optical storage integrated machine power supply system and power supply method Download PDFInfo
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Abstract
The application provides a 5G base station light storage integrated machine power supply system, which comprises: the photovoltaic module, the light storage integrated machine and the energy storage battery are electrically connected with the alternating current/direct current load of the 5G base station through the light storage integrated machine; the optical storage all-in-one machine comprises: the photovoltaic port is used for being connected with the photovoltaic module, the direct current port is used for being electrically connected with the direct current load and the energy storage battery, and the alternating current port is used for being electrically connected with the alternating current load; the photovoltaic module is connected into the photovoltaic port to supply power through the optical storage integrated machine; the energy storage battery is electrically connected with the direct current port of the optical storage integrated machine; the system also comprises an energy management platform, and the energy management platform adjusts the power supply quantity of the photovoltaic module and the energy storage battery to the alternating current load and the direct current load according to the output power of the photovoltaic module, the power of the alternating current load and the power of the direct current load. According to the system provided by the application, the energy utilization efficiency of the 5G base station to the photovoltaic and energy storage system can be improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic energy, in particular to a power supply system and a power supply method of a 5G base station light storage integrated machine.
Background
The 5G infrastructure is one of seven industries of China 'new infrastructure', the power consumption of 5G base station equipment is greatly improved compared with that of 4G, the power consumption of 5G base station single station is about 2.5-3.5 times of that of 4G, almost all machine rooms are required to be modified for a power supply system to meet the requirement of stable operation of a 5G network, the later electricity consumption cost can greatly improve the operation cost of operators, and the focus of people is how to ensure reliable and stable power supply of the 5G base station while saving more energy. The communication equipment of the 5G base station adopts direct current power supply, air conditioning, illumination and the like adopts alternating current power supply, and the communication equipment serving as direct current load is core equipment of the 5G base station. The current 5G base station light storage power supply system comprises a direct current coupling light storage system and an alternating current coupling light storage system, wherein a photovoltaic module and an energy storage module are mutually independent, and a photovoltaic controller (or a photovoltaic inverter) and an energy storage controller (or an energy storage converter) of the photovoltaic module and the energy storage module are needed.
If the direct current coupling optical storage system is adopted, the photovoltaic module generates power to supply power for a direct current load and charges an energy storage battery, but the photovoltaic module and the energy storage battery cannot supply power for an alternating current load.
If the alternating current coupling light storage system is adopted, direct current output by the photovoltaic module is converted into alternating current through the photovoltaic inverter, then the alternating current is converted into direct current through the switching power supply or the energy storage converter to be supplied to the direct current load and charge the energy storage battery, the alternating current/direct current conversion is carried out for 2 times, loss caused by multiple times of alternating current/direct current conversion exists, and the system efficiency is low.
Disclosure of Invention
The invention aims to provide a technical scheme for solving the problems of low energy utilization efficiency, more devices, complex system and the like of a 5G base station optical storage system in the related art.
Based on the above object, the application provides a 5G base station optical storage integrated machine power supply system, comprising:
the photovoltaic module, the light storage integrated machine and the energy storage battery are electrically connected with an alternating current load and a direct current load of the 5G base station through the light storage integrated machine;
The light storage integrated machine comprises a photovoltaic port, a direct current port and an alternating current port, wherein the photovoltaic port is used for being connected with a photovoltaic module, the direct current port is used for being electrically connected with a direct current load and an energy storage battery, and the alternating current port is used for being electrically connected with an alternating current load;
The photovoltaic module comprises a photovoltaic group string, the photovoltaic group string is used for converting light energy into direct current, and the photovoltaic module is connected into a photovoltaic port to supply power through the photovoltaic storage integrated machine;
the energy storage battery is electrically connected with the direct current port of the optical storage integrated machine to charge and discharge;
the system also comprises an energy management platform, and the energy management platform adjusts the power supply quantity of the photovoltaic module and the energy storage battery to the alternating current load and the direct current load according to the output power of the photovoltaic module, the power of the alternating current load and the power of the direct current load.
Furthermore, the optical storage integrated machine also comprises a maximum power point tracking control unit, a direct current conversion unit and an alternating current-direct current conversion unit,
The maximum power point tracking control unit enables the output power of the photovoltaic module to reach the maximum power point;
The direct current conversion unit enables the output voltage of the direct current port to be stabilized to be direct current preset voltage, and the direct current conversion unit supplies power to a direct current load or charges an energy storage battery;
the alternating current-direct current conversion unit realizes alternating current-direct current conversion, converts direct current input by a photovoltaic port or a direct current port into alternating current to be output at an alternating current port, or converts alternating current input by the alternating current port into direct current to be output at the direct current port.
Further, the system also comprises a power grid, an alternating current distribution box and a switching power supply, wherein the power grid is connected to an alternating current load and an alternating current port of the optical storage integrated machine through the alternating current distribution box, and is electrically connected to a direct current load through the alternating current distribution box and the switching power supply, and the switching power supply is used for supplying power to the direct current load after converting alternating current of the power grid into direct current;
the energy management platform adjusts the power supply quantity of the photovoltaic module, the energy storage battery and the power grid to the alternating current load and the direct current load according to the output power of the photovoltaic module, the peak-valley electricity price of the power grid, the power of the alternating current load and the power of the direct current load.
Further, when the output power of the photovoltaic module is greater than the sum of the power of the alternating current load and the power of the direct current load, the energy management platform controls the photovoltaic module to independently supply power to the alternating current load and the direct current load, and charges an energy storage battery or sends the energy storage battery to a power grid.
Further, when the output power of the photovoltaic module is smaller than the sum of the power of the alternating current load and the power of the direct current load, if the peak power period is the peak power period, the energy management platform controls the photovoltaic module and the energy storage battery to supply power for the alternating current load and the direct current load together; if the period is the flat electricity period, the energy management platform controls the photovoltaic module and the power grid to supply power for the alternating current load and the direct current load together; and if the electricity is in the valley period, the energy management platform controls the photovoltaic module and the power grid to supply power for the alternating current load and the direct current load together and charge the energy storage battery.
Further, when the photovoltaic module cannot generate electricity, the energy management platform controls the power grid to supply power for the alternating current load and the direct current load and charges the energy storage battery in a valley electricity period; in the flat-electricity period, the energy management platform controls the power grid to supply power for alternating current load and direct current load; during peak power periods, the energy management platform controls the energy storage battery to supply power for alternating current loads and direct current loads.
Further, when the power grid cannot supply power, the energy management platform preferably controls the photovoltaic module to supply power for the alternating current load and the direct current load, and the secondary energy storage battery is selected to supply power for the alternating current load and the direct current load.
Further, the system further comprises a storage battery, the storage battery is electrically connected with the direct-current load, and the storage battery is used for supplying power to the direct-current load when the power grid, the photovoltaic module and the energy storage battery cannot supply power.
Furthermore, the energy management platform can also acquire real-time weather data, predicts the output power of the photovoltaic module according to the real-time weather data, and adjusts the power supply quantity of the photovoltaic module, the energy storage battery and the power grid to the alternating current load and the direct current load according to the predicted output power of the photovoltaic module and the peak-to-valley electricity price of the power grid.
The application also provides a power supply method of the 5G base station optical storage integrated machine, and the power supply system of the 5G base station optical storage integrated machine is used for supplying power to the alternating current load and the direct current load of the 5G base station.
According to the description, the power supply system of the 5G base station optical storage all-in-one machine provided by the embodiment of the application simplifies the photovoltaic and energy storage power supply system of the 5G base station, can avoid multiple AC/DC conversion losses when the photovoltaic inverter (or photovoltaic controller) and the energy storage converter are used for supplying power to the 5G base station communication equipment (DC load), and improves the energy utilization efficiency of the 5G base station to the photovoltaic and energy storage system. In addition, the power supply system has multiple power supply modes of photovoltaic power supply and energy storage battery power supply, and improves the power supply stability of the 5G base station.
Drawings
Fig. 1 is a schematic diagram of a power supply system of an off-grid 5G base station optical storage integrated machine according to an embodiment of the present application;
fig. 2 is a schematic diagram of a power supply system of a grid-connected 5G base station optical storage integrated machine according to an embodiment of the present application;
Fig. 3 is a schematic diagram of a power supply system of a grid-connected 5G base station optical storage integrated machine according to another embodiment of the present application;
fig. 4 is a schematic structural diagram of an optical storage integrated machine according to an embodiment of the present application.
Detailed Description
The present invention will be described in detail below with reference to the specific embodiments shown in the drawings, but these embodiments are not limited to the present invention, and structural, method, or functional modifications made by those skilled in the art based on these embodiments are included in the scope of the present invention.
As shown in fig. 1, an embodiment of the present application provides an off-network 5G base station optical storage integrated machine power supply system 100,5G base station optical storage integrated machine power supply system 100, which includes: the photovoltaic module 11, the light stores up all-in-one 12 and the energy storage battery 13, and photovoltaic module 11 and energy storage battery 13 pass through light and store up all-in-one 12 and are connected with 5G basic station's alternating current load and direct current load electricity.
The optical storage integrated machine 12 comprises a photovoltaic port 121, a direct current port 122 and an alternating current port 123, wherein the photovoltaic port 121 is used for being connected with the photovoltaic module 11, the direct current port 122 is used for being electrically connected with the direct current load and the energy storage battery 13, and the alternating current port 123 is used for being electrically connected with the alternating current load.
The photovoltaic module 11 includes a photovoltaic string for converting light energy into direct current, and the photovoltaic module 11 is connected to the photovoltaic port 121 to supply power through the photovoltaic storage integrated machine 12.
The energy storage battery 13 is electrically connected with the direct current port 122 of the optical storage integrated machine 12 for charging and discharging.
The 5G base station light storage integrated machine power supply system 100 further includes an energy management platform 14, where the energy management platform 14 adjusts the power supply amounts of the photovoltaic module 11 and the energy storage battery 13 to the ac load and the dc load according to the output power of the photovoltaic module 11, the power of the ac load, and the power of the dc load.
As an alternative implementation, the optical storage all-in-one machine 12 includes a dc conversion unit 124, an ac-dc conversion unit 125, and a maximum power point tracking control unit 126. The dc conversion unit 124 stabilizes the voltage at the output side of the dc port 122 to a dc preset voltage, which may be 48V, to supply the dc load or charge the energy storage battery 13. Specifically, the direct current load of the 5G base station includes a communication device of the 5G base station, and the direct current load of the 5G base station and the energy storage battery 13 can be commonly connected to the direct current port 122 of the optical storage integrated machine 12, so that the direct current output by the photovoltaic module 11 is converted by the direct current conversion unit 124 of the optical storage integrated machine 12 and then is supplied to the direct current load and the energy storage battery 13 through the direct current port 122.
The ac-dc conversion unit 125 is configured to perform ac-dc conversion, and convert dc power input from the photovoltaic port 121 or the dc port 122 into ac power for output from the ac port 123. Specifically, the ac load of the 5G base station may include an air conditioner, an illumination, and other devices, and the ac load of the 5G base station may be connected to the ac port 123 of the optical storage integrated machine 12, so that the dc power output by the photovoltaic module 11 is converted into ac power by the ac-dc conversion unit 125 of the optical storage integrated machine 12, and then the ac power can be supplied to the ac load of the 5G base station through the ac port 123.
When the energy storage battery 13 is connected to the direct current port 122 of the optical storage integrated machine 12, the energy storage battery 13 is electrically connected with the alternating current load and the direct current load of the 5G base station and the photovoltaic module 11 respectively, and supplies power to the alternating current load and the direct current load of the 5G base station through the optical storage integrated machine 12. For example, the energy storage battery 13 may be used when the photovoltaic module 11 is not supplying power to the ac/dc load of the 5G base station. Specifically, the energy storage battery 13 can stably supply power to the direct current load of the 5G base station through the direct current conversion unit 124 of the optical storage integrated machine 12, and the energy storage battery 13 can also input direct current to the direct current port 122 of the optical storage integrated machine 12, and the direct current input by the direct current port 122 is converted by the alternating current-direct current conversion unit 125 and then output in an alternating current form at the alternating current port 123, so as to supply power to the alternating current load of the 5G base station.
The maximum power point tracking control unit 126 makes the output power of the photovoltaic module 11 reach the maximum power point.
According to the above description, the power supply system 100 of the 5G base station optical storage integrated machine provided by the embodiment of the application simplifies the photovoltaic and energy storage power supply system of the 5G base station, can avoid multiple ac/dc conversion losses when the photovoltaic inverter (or photovoltaic controller) and the energy storage converter are used for supplying power to the 5G base station communication equipment (dc load), and improves the energy utilization efficiency of the 5G base station to the photovoltaic and energy storage system. In addition, the power supply stability of the 5G base station is improved by having multiple power supply modes of photovoltaic power supply and power supply of the energy storage battery 13.
As shown in fig. 2, the embodiment of the present application further provides a power supply system 100,5G of a grid-connected 5G base station optical storage integrated machine, and the power supply system 100 of a base station optical storage integrated machine further includes:
The power grid is connected to an alternating current port 123 of the alternating current load and light storage integrated machine 12 through the alternating current distribution box 15, the alternating current distribution box 15 and the switching power supply 16, and is further electrically connected to a direct current load through the alternating current distribution box 15 and the switching power supply 16, and the switching power supply 16 is used for supplying power to the direct current load after converting alternating current of the power grid into direct current.
Specifically, the power grid is electrically connected to an ac load through an ac distribution box 15, and supplies power to the ac load. The power grid is also electrically connected to the ac port 123 of the integrated optical storage device 12 via the ac distribution box 15, and at this time, the power grid may input ac to the ac port 123 of the integrated optical storage device 12, and the ac/dc conversion unit 125 may convert the ac input from the ac port 123 into dc to output at the dc port 122. Specifically, the ac power output by the power grid is converted into dc power by the ac-dc conversion unit 125 of the integrated optical storage machine 12, and then the dc power can be charged into the energy storage battery 13. The power grid is also electrically connected to the direct current load of the 5G base station through the alternating current distribution box 15 and the switching power supply 16, and the switching power supply 16 can convert alternating current of the power grid into direct current through the switching power supply 16 and then supply power for the direct current load of the 5G base station.
According to the above description, the grid-connected 5G base station optical storage integrated machine power supply system 100 provided by the embodiment of the application has multiple power supply modes of photovoltaic power supply, grid power supply and energy storage battery 13 power supply, so that the power supply stability of the 5G base station is improved.
As an optional implementation manner, in the grid-connected 5G base station optical storage integrated machine power supply system 100 provided by the embodiment of the present application, the energy management platform 14 may adjust the output power of the photovoltaic module 11, the peak-to-valley electricity price of the power grid, the power of the ac load and the power of the dc load according to the photovoltaic module 11, the energy storage battery 13, and the power supply amounts of the power grid to the ac load and the dc load with the aim of optimizing economy. In this way, the electricity cost of the 5G base station can be saved by utilizing the photovoltaic power generation,
Specifically, the energy management platform 14 may draw power from an ac load and power from a dc load. For example, separate collectors may be provided to collect the ac load power and the dc load power and upload the collected ac load power and dc load power to the energy management platform 14.
When the output power of the photovoltaic module 11 is greater than the sum of the power of the ac load and the power of the dc load, the energy management platform 14 controls the photovoltaic module 11 to individually supply power to the ac load and the dc load of the 5G base station, and controls the photovoltaic module 11 to charge the energy storage battery 13 or to supply power to the grid. That is, when the power generation amount of the photovoltaic module 11 is high after the irradiation in the daytime, the energy management platform 14 controls the photovoltaic module 11 to independently supply power to the 5G base station ac/dc load through the light storage integrated machine 12, and the redundant power is determined to charge the energy storage battery 13 or supply power to the power grid according to the internet power price and the electricity consumption price. The dc generated by the photovoltaic string is output to the dc load and the energy storage battery 13 through the dc conversion unit 124 of the integrated photovoltaic device 12, and is converted into ac power through the ac-dc conversion unit 125 of the integrated photovoltaic device 12 to be supplied to the ac load or fed to the power grid.
In other embodiments, when the output power of the photovoltaic module 11 is smaller than the sum of the dc load power and the ac load power of the 5G base station, if the output power is the peak power period, the energy management platform 14 controls the photovoltaic module 11 and the energy storage battery 13 to supply power to the ac load and the dc load of the 5G base station together, and at this time, the photovoltaic module 11 and the energy storage battery 13 supply power to the dc load through the dc conversion unit 124 of the optical storage integrated machine 12, and supply power to the ac load through the ac/dc conversion unit 125 of the optical storage integrated machine 12. If the period is a flat electricity period, the energy management platform 14 controls the photovoltaic module 11 and the power grid to jointly supply power for the alternating current load and the direct current load of the 5G base station. If the electricity is in the valley period, the energy management platform 14 controls the photovoltaic module 11 and the power grid to supply power for the 5G base station alternating current load and the direct current load together, and charges the energy storage battery 13. In this case, the photovoltaic module 11 preferably supplies power to the dc load through the dc conversion unit 124 of the optical storage integrated machine 12, and the power grid supplies power to the ac load. The photovoltaic power generation can be fully consumed, the energy storage battery 13 is utilized to charge and discharge in a staggered manner, the electricity price difference is earned, and the economic benefit is improved.
In other embodiments, when the photovoltaic module 11 cannot generate electricity, the power grid is used to supply the ac/dc load of the 5G base station and to charge the energy storage battery 13 during the valley period, and at this time, the ac power of the power grid is converted into the dc power by the switching power supply 16 and then supplied to the dc load, and is converted into the dc power by the ac/dc conversion unit 125 of the optical storage integrated machine 12 and then charged to the energy storage battery 13. In the flat-power period, the power grid is used for supplying power to the 5G base station AC/DC load, and at the moment, the AC of the power grid is converted into DC by the switching power supply 16 and then supplies power to the DC load. In the peak electricity period, the energy storage battery 13 is utilized to supply power for the 5G base station AC/DC load through the optical storage integrated machine 12, at this time, the energy storage battery 13 supplies power for the DC load through the DC conversion unit 124 of the optical storage integrated machine 12, and supplies power for the AC load through the AC/DC conversion unit 125 of the optical storage integrated machine 12.
In other embodiments, as shown in fig. 3, the 5G base station optical storage integrated machine power supply system 100 further includes a storage battery 17, where the storage battery 17 is electrically connected to the dc load, and the storage battery 17 is used to supply power to the dc load when the power grid, the photovoltaic module 11, and the energy storage battery 13 cannot supply power.
When the power grid cannot supply power, the photovoltaic module 11 is preferably selected to supply power for the 5G base station AC/DC load, the energy storage battery 13 is selected, and the storage battery 17 is selected to supply power for the 5G base station DC load. When the 5G base station light storage integrated machine power supply system 100 is off-grid, the photovoltaic module 11 generates power in the daytime, the photovoltaic module 11 supplies power to the 5G base station alternating current/direct current load and simultaneously charges the energy storage battery 13 and the storage battery 17, at the moment, the photovoltaic module 11 supplies power to the direct current load through the direct current conversion unit 124 of the light storage integrated machine 12 and charges the energy storage battery 13 and the storage battery 17, and supplies power to the alternating current load through the alternating current/direct current conversion unit 125 of the light storage integrated machine 12; when the photovoltaic module 11 cannot generate electricity at night or in continuous overcast and rainy weather, the energy storage battery 13 is used for supplying power to the 5G base station AC/DC load, at the moment, the energy storage battery 13 supplies power to the DC load through the DC conversion unit 124 of the optical storage integrated machine 12, and supplies power to the AC load through the AC/DC conversion unit 125 of the optical storage integrated machine 12; when the photovoltaic module 11 and the energy storage battery 13 are abnormal, the storage battery 17 works to supply power for the direct current load of the 5G base station only. By the mode, the communication equipment of the 5G base station can be ensured not to stop due to abnormal power supply, and the stable operation of the 5G base station is ensured.
As shown in fig. 4, in other embodiments, the optical storage all-in-one machine 12 includes a maximum power point tracking control unit 126, a dc conversion unit 124, an ac-dc conversion unit 125, a monitoring unit 127, and a communication unit 128. The maximum power point tracking control unit 126 tracks the highest voltage current value of the photovoltaic string so that the photovoltaic string operates at the maximum power point; the dc conversion unit 124 stabilizes the voltage at the output side of the dc port 122 to a dc preset voltage, which may be 48V, to supply power to the dc load or charge the energy storage battery 13; the ac-dc conversion unit 125 performs ac-dc conversion, converts dc power of the photovoltaic module 11 or the energy storage battery 13 into ac power to supply power to an ac load and/or power to a power grid, or converts ac power of the power grid into dc power to supply power to the energy storage battery 13 and/or dc load; the monitoring unit 127 collects the electrical parameters of the photovoltaic module 11 and the energy storage battery 13, and uploads the electrical parameters to the maximum power point tracking control unit 126 and the energy management platform 14 via the communication unit 128.
In other embodiments, the energy management platform 14 may acquire real-time weather data over a network, including radiation level, ambient temperature, ambient humidity, and the like. The energy management platform 14 can predict the power generated by the photovoltaic module 11 according to real-time weather data, and coordinate and control the power supply quantity and the power supply time of the photovoltaic module 11, the energy storage battery 13, the storage battery 17 and the power grid for the 5G base station AC/DC load according to the output power of the photovoltaic module 11 and the peak-to-valley electricity price of the power grid, so that the purpose of reducing the operation cost of the 5G base station by utilizing photovoltaic power generation, peak clipping and valley filling to the greatest extent is achieved.
In other embodiments, the energy management platform 14 data may also be uploaded to the cloud monitoring platform through GPRS, and the user may obtain real-time data of the 5G base station through the mobile APP or the web page, including: the photovoltaic module 11 generates power, current, voltage, daily power generation, accumulated power generation, the energy storage battery 13SOC, SOH, charge power, discharge power, charge amount, discharge amount, dc load power, ac load power, the state of the storage battery 17, and the like. And the remote cloud monitoring function is used for monitoring and storing the real-time running information and the historical data of the 5G base station, prompting faults and reducing the operation and maintenance cost.
In other embodiments, the 5G base station optical storage all-in-one power supply system 100 further includes a voltage sensor and a current sensor. The voltage sensor and the current sensor are arranged on the lines between the grid and the ac distribution box 15, between the ac distribution box 15 and the ac load, and between the ac distribution box 15 and the switching power supply 16. The voltage sensor is used for detecting line voltage, the current sensor is used for detecting line current and uploading the line current to the energy management platform 14 through RS485 communication, and the operation condition of the 5G base station optical storage power supply system is conveniently mastered.
The embodiment of the application also provides a power supply method of the optical storage integrated machine 12, and the 5G base station optical storage integrated machine power supply system 100 provided by the embodiment of the application is used for supplying power to the 5G base station alternating current/direct current load. The method specifically comprises the following steps:
when the output power of the photovoltaic module 11 is larger than the sum of the alternating current load power and the direct current load power of the 5G base station, the energy management platform 14 controls the photovoltaic module 11 of the optical storage integrated machine 12 to independently supply power to the alternating current load and the direct current load of the 5G base station, and the redundant electric energy of the photovoltaic module 11 charges the energy storage battery 13 or is fed to a power grid;
When the output power of the photovoltaic module 11 is smaller than the sum of the alternating current load power and the direct current load power of the 5G base station, the photovoltaic module 11 and the energy storage battery 13 are used for jointly supplying power to the alternating current/direct current load of the 5G base station in the peak power period, and the photovoltaic module 11 and the power grid are used for jointly supplying power to the alternating current/direct current load of the 5G base station in the flat power period; if the electricity is in the valley period, the photovoltaic module 11 and the power grid are controlled to supply power to the 5G base station AC/DC load together, and the energy storage battery 13 is not charged.
When the photovoltaic module 11 cannot generate power, in the valley period, the power grid is used for supplying power to the 5G base station AC/DC load and charging the energy storage battery 13, in the flat period, the power grid is used for supplying power to the 5G base station AC/DC load, and in the peak period, the energy storage battery 13 is used for supplying power to the 5G base station AC/DC load through the optical storage integrated machine 12;
When the power grid cannot supply power, the photovoltaic module 11 is preferentially selected to supply power for the alternating current load and the direct current load of the 5G base station, the energy storage battery 13 is selected, and then the storage battery 17 is used for supplying power for only the direct current load of the 5G base station when the photovoltaic module 11 and the energy storage battery 13 are abnormal.
The photovoltaic and energy storage power supply system of the 5G base station is simplified by utilizing the photovoltaic and energy storage integrated machine 12, the capacity expansion of the system is facilitated, the multiple AC/DC conversion loss when the photovoltaic inverter (or photovoltaic controller) and the energy storage converter are utilized to supply power to the 5G base station communication equipment (DC load) is avoided, and the photovoltaic and energy storage utilization efficiency is improved; meanwhile, with the aim of optimizing economy, the energy management platform 14 is utilized to acquire weather real-time data through a network so as to predict the generated power of the photovoltaic module 11, and the photovoltaic module 11, the energy storage battery 13, the storage battery 17 and the power grid are coordinated to control the power supply quantity and the power supply time of the 5G base station AC/DC load according to the output power of the photovoltaic module 11, the peak-valley power price of the power grid and the AC/DC load power consumption, so that the electricity consumption cost of the 5G base station is saved by improving the photovoltaic power generation consumption proportion, and the peak-valley power price difference is earned by reasonably utilizing the time-staggered charge and discharge of the energy storage battery 13, so that the operation cost of the 5G base station is saved; and the power supply stability of the 5G base station is improved due to various power supply modes such as the photovoltaic power, the energy storage battery 13, the storage battery 17 and the power grid.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Claims (10)
1. A 5G base station optical storage all-in-one power supply system, the system comprising:
The photovoltaic module, the light storage integrated machine and the energy storage battery are electrically connected with an alternating current load and a direct current load of the 5G base station through the light storage integrated machine;
the photovoltaic storage integrated machine comprises a photovoltaic port, a direct current port and an alternating current port, wherein the photovoltaic port is used for being connected with the photovoltaic module, the direct current port is used for being electrically connected with the direct current load and the energy storage battery, and the alternating current port is used for being electrically connected with the alternating current load;
The photovoltaic module comprises a photovoltaic group string, the photovoltaic group string is used for converting light energy into direct current, and the photovoltaic module is connected into the photovoltaic port to supply power through the light storage integrated machine;
the energy storage battery is electrically connected with the direct current port of the optical storage integrated machine so as to charge and discharge;
The system also comprises an energy management platform, wherein the energy management platform is used for allocating the power supply quantity of the photovoltaic module and the energy storage battery to the alternating current load and the direct current load according to the output power of the photovoltaic module, the power of the alternating current load and the power of the direct current load.
2. The 5G base station optical storage all-in-one power supply system according to claim 1, wherein,
The optical storage integrated machine also comprises a maximum power point tracking control unit, a direct current conversion unit and an alternating current-direct current conversion unit,
The maximum power point tracking control unit enables the output power of the photovoltaic module to reach a maximum power point;
The direct current conversion unit enables the output voltage of the direct current port to be stabilized to be direct current preset voltage, and the direct current load is powered or the energy storage battery is charged;
The alternating current-direct current conversion unit realizes alternating current-direct current conversion, converts direct current input by the photovoltaic port or the direct current port into alternating current to be output at the alternating current port, or converts alternating current input by the alternating current port into direct current to be output at the direct current port.
3. The 5G base station optical storage all-in-one power supply system according to claim 1, wherein,
The system further comprises a power grid, an alternating current distribution box and a switching power supply, wherein the power grid is connected to the alternating current load and the alternating current port of the light storage integrated machine through the alternating current distribution box, and is electrically connected to the direct current load through the alternating current distribution box and the switching power supply, and the switching power supply is used for supplying power to the direct current load after converting alternating current of the power grid into direct current;
The energy management platform adjusts the power supply quantity of the photovoltaic module, the energy storage battery and the power grid to the alternating current load and the direct current load according to the output power of the photovoltaic module, the peak-valley electricity price of the power grid, the power of the alternating current load and the power of the direct current load.
4. The 5G base station optical storage all-in-one power supply system according to claim 3, wherein,
When the output power of the photovoltaic module is larger than the sum of the power of the alternating current load and the power of the direct current load, the energy management platform controls the photovoltaic module to independently supply power for the alternating current load and the direct current load and charge the energy storage battery or send the energy storage battery to the power grid.
5. The 5G base station optical storage all-in-one power supply system according to claim 3, wherein,
When the output power of the photovoltaic module is smaller than the sum of the power of the alternating current load and the power of the direct current load, if the peak power period is the peak power period, the energy management platform controls the photovoltaic module and the energy storage battery to supply power for the alternating current load and the direct current load together; if the period is a flat-electricity period, the energy management platform controls the photovoltaic module and the power grid to supply power for the alternating current load and the direct current load together; and if the energy storage battery is in the valley period, the energy management platform controls the photovoltaic module and the power grid to supply power for the alternating current load and the direct current load together and charge the energy storage battery.
6. The 5G base station optical storage all-in-one power supply system according to claim 3, wherein,
When the photovoltaic module cannot generate electricity, the energy management platform controls the power grid to supply power for the alternating current load and the direct current load and charges the energy storage battery in a valley electricity period; in a flat-electricity period, the energy management platform controls the power grid to supply power for the alternating current load and the direct current load; and in the peak electricity period, the energy management platform controls the energy storage battery to supply power for the alternating current load and the direct current load.
7. The 5G base station optical storage all-in-one power supply system according to claim 3, wherein,
When the power grid cannot supply power, the energy management platform preferably controls the photovoltaic module to supply power for the alternating current load and the direct current load, and the energy storage battery is selected to supply power for the alternating current load and the direct current load.
8. The 5G base station optical storage all-in-one power supply system according to claim 3, wherein,
The system further comprises a storage battery, wherein the storage battery is electrically connected with the direct current load, and the storage battery is used for supplying power to the direct current load when the power grid, the photovoltaic module and the energy storage battery cannot supply power.
9. The 5G base station optical storage all-in-one power supply system according to claim 3, wherein,
The energy management platform can also acquire real-time weather data, predict the output power of the photovoltaic module according to the real-time weather data, and allocate the power supply amounts of the photovoltaic module, the energy storage battery and the power grid to the alternating current load and the direct current load according to the predicted output power of the photovoltaic module and the power grid peak Gu Dianjia.
10. A 5G base station optical storage integrated machine power supply method, characterized in that the 5G base station optical storage integrated machine power supply system according to any one of claims 1 to 9 is used for supplying power to an ac load and a dc load of a 5G base station.
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