Energy saving system and method for communication base station power supply voltage control based on communication load

Abstract

The application discloses a communication base station power supply voltage control energy-saving system and method based on communication load. The system comprises a cloud platform, an energy storage battery, a line switching unit, a voltage control unit, and a commercial power grid. The commercial power grid supplies power to the energy storage battery and an antenna in the communication base station through the voltage control unit, and the energy storage battery supplies power to the antenna through the voltage control unit. The line switching unit is used for controlling the on-off of the line. The cloud platform is in communication connection with a control system in the communication base station, and the control system in the communication base station is in control connection with the line switching unit and the voltage control unit. In the method, the cloud platform obtains communication base station load data and antenna load typical power data through the control system, calculates the data and transmits the calculation results to the control system, and the control system controls the line switching unit and the voltage control unit to work based on the calculation results. The application can realize low-carbon energy-saving operation of the communication base station and reduce the operation cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication base station control systems, in particular to a communication base station power supply voltage control energy-saving system and method based on communication load. BACKGROUND

[0002] With the continuous development of 4G / 5G network scale, the power consumption is also increasing. In the entire mobile communication network, the base station power consumption accounts for about 70%. Therefore, the energy-saving measures of the base station can effectively promote the telecom operators to realize cost reduction and efficiency increase, and it is also an important part of the power grid to help China achieve the double carbon goal.

[0003] Each equipment manufacturer has also carried out a lot of research on the energy-saving technology and solution of wireless communication network. At present, the main response measures for 4G / 5G base station energy saving include hardware energy saving and software energy saving. Hardware energy saving is mainly achieved by improving the process, optimizing the circuit and optimizing the supporting facilities of the machine room, and software energy saving is achieved by controlling the base station switch, the real-time load condition of the base station, reasonable hibernation, and closing part of the data channel.

[0004] Hardware energy-saving technology mainly includes two aspects: 1. Base station main equipment hardware energy saving: by using higher chip technology, higher integration function chip, and higher efficiency circuit optimization indoor baseband processing unit (BBU) and antenna unit (AAU) hardware equipment, the power consumption of 5G-NR base station is greatly reduced, and the hardware architecture is simplified. In addition, base station co-construction and machine room co-construction are also effective measures to reduce power consumption. 2. Base station room supporting equipment energy saving: there are many types of base station supporting energy-saving products and manufacturers, mainly divided into seven categories of base station supporting energy-saving technologies, including new energy, intelligent ventilation, energy-saving air conditioning, battery insulation box, integrated machine room and DCS passive energy-saving.

[0005] Software energy-saving technology mainly includes two aspects: 1. Shutdown technology: based on the load of the base station, dynamically hibernating or closing part of the sub-module can effectively reduce the power consumption of the base station. For a single base station, the effect of this technology is not obvious, but for the huge total amount of base stations and long-term time period, the effect of shutdown technology energy saving is very obvious. Shutdown technology research mainly includes: overall hibernation technology based on user amount, switch technology based on application scenario, carrier shutdown technology based on business type, channel and time slot hibernation technology. 2. Process control technology: in the application of new technology, process control technology can simplify the communication process, reduce data transmission, and effectively reduce the power consumption of base station equipment.

[0006] The above energy-saving technologies are executed in the case of accessing to the commercial power supply, and do not consider that the power of many communication loads is minimum under the rated voltage, the energy consumption is minimum, and the energy storage is not well utilized to further reduce the cost. It has been proved by time that such a power supply mode cannot better meet the requirements in the low-carbon environment. SUMMARY

[0007] The application provides a communication base station power supply voltage control energy-saving system and method based on communication load, to solve the problem that the existing 4G / 5G communication base station energy-saving technology cannot meet the energy-saving and low-carbon requirements.

[0008] In order to achieve the above purpose, the technical scheme adopted by the application is as follows:

[0009] The communication base station power supply voltage control energy-saving system based on communication load comprises a cloud platform, an energy storage battery, a line switching unit, and a voltage control unit. The commercial power grid is connected to the energy storage battery and the electrical input end of the antenna in the communication base station through the voltage control unit, and the electrical output end of the energy storage battery is connected to the electrical input end of the antenna in the communication base station through the voltage control unit. The voltage control unit controls the voltage output by the commercial power grid to the energy storage battery and the antenna, and controls the voltage output by the energy storage battery to the antenna. The line switching unit is used to control the line on-off between the commercial power grid and the energy storage battery, the line on-off between the commercial power grid and the antenna, and the line on-off between the energy storage battery and the antenna. The cloud platform is in communication connection with the control system in the communication base station. The control system in the communication base station is in control connection with the line switching unit and the voltage control unit. The cloud platform obtains the communication base station load data and the antenna load typical power data through the control system, generates a control instruction based on the load data, and transmits the control instruction to the control system of the communication base station. The control system of the communication base station controls the line switching unit and the voltage control unit to work based on the control instruction.

[0010] Further, the voltage control unit comprises a converter. The control system in the communication base station is in control electrical connection with the converter. The commercial power grid is connected to the energy storage battery and the electrical input end of the antenna in the communication base station through the converter, and the electrical output end of the energy storage battery is connected to the electrical input end of the antenna in the communication base station through the converter. The line switching unit comprises a circuit breaker connected between the commercial power grid and the energy storage battery, a circuit breaker connected between the commercial power grid and the antenna, and a circuit breaker connected between the energy storage battery and the antenna. The control system in the communication base station is also in control electrical connection with each circuit breaker. The control system in the communication base station controls each circuit breaker to be on or off to realize line switching, and controls the converter to work to change the voltage in the corresponding line.

[0011] A control energy-saving method of the communication base station power supply voltage control energy-saving system, comprising the following steps:

[0012] Step 1, the cloud platform obtains communication base station load data and antenna load typical power data through the control system, obtains a first low value time inflection point at which the communication base station load average utilization rate changes from high to low and tends to be stable, and a second low value time inflection point at which the communication base station load average utilization rate changes from low to high in a set time period based on the communication base station load data, and obtains the optimal antenna power supply voltage at which the power consumption is the lowest based on the antenna load typical power data by the cloud platform;

[0013] Step 2, the cloud platform transmits the first low value time inflection point, the second low value time inflection point and the optimal antenna power supply voltage obtained in step 1 to the control system of the communication base station;

[0014] Step 3, the communication base station control system controls the line switching unit to make the power grid and the antenna conductive, and the power grid and the energy storage battery conductive, and controls the voltage control unit to convert the voltage of the power grid into the charging voltage of the energy storage battery, and supplies power to the antenna and charges the energy storage battery with the charging voltage of the energy storage battery in the time period between the first low value time inflection point and the second low value time inflection point;

[0015] The communication base station control system controls the line switching unit to disconnect the power grid and the antenna, and makes the energy storage battery and the antenna conductive, and controls the voltage control unit to convert the voltage of the power grid into the optimal antenna power supply voltage obtained in step 1, and supplies power to the antenna with the optimal antenna power supply voltage from the energy storage battery in the time period between the second low value time inflection point and the first low value time inflection point.

[0016] In further step 1, the cloud platform extracts sample data from the obtained data, locates missing values and abnormal values from the sample data, and then obtains missing values and abnormal values of the entire obtained data according to the sample data positioning situation, and performs data cleaning on the missing values and abnormal values in the obtained data by the cloud platform using the replacement method.

[0017] In further step 1, the cloud platform establishes an antenna power characteristic model at different power supply voltage ranges based on the antenna load typical power data using the segmented power sampling fitting method, and determines the optimal antenna power supply voltage at which the power consumption is the lowest according to the established antenna power characteristic model.

[0018] In further step 1, the cloud platform establishes a communication base station power consumption model based on the communication base station load data and the wireless utilization rate obtained through experiment measurement, then obtains a communication base station load average utilization rate curve in a set time period based on the communication base station power consumption model, and finally determines the first low-value time inflection point and the second low-value time inflection point according to the communication base station load average utilization rate curve.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The present application adds an energy storage battery and controls the power supply voltage, adjusts the power supply voltage to the voltage required by the energy storage battery during the period of low load average utilization, and supplies power to the energy storage battery and the load from the mains; during the period of high load average utilization, the mains switch is turned off, the power supply voltage of the energy storage battery is adjusted to the optimal power supply voltage range of the antenna, and power is supplied to the 4G / 5G antenna, so as to realize low-carbon and energy-saving operation of the communication base station, and reduce the operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a system structure diagram of an embodiment one of the present application.

[0022] Figure 2 is a voltage control unit connection diagram of an embodiment one of the present application.

[0023] Figure 3 is a line switching unit connection diagram of an embodiment one of the present application.

[0024] Figure 4 is a 4G, 5G mobile communication network structure diagram in an embodiment two of the present application.

[0025] Figure 5 is a 4G, 5G base station communication load power consumption diagram in an embodiment two of the present application.

[0026] Figure 6 is a 4G antenna power characteristic diagram in an embodiment two of the present application.

[0027] Figure 7 is a 5G antenna power characteristic diagram in an embodiment two of the present application.

[0028] Figure 8 is a 24-hour utilization rate of the communication base station in an embodiment two of the present application.

[0029] Figure 9 is a flow chart diagram of an embodiment two of the present application.

[0030] Figure 10 is a comparison diagram of energy consumption of two modes in an embodiment three of the present application. DETAILED DESCRIPTION

[0031] In order to make the person skilled in the art better understand the technical scheme of the present application, the embodiments of the present application will be described in detail below in combination with the drawings and examples, so that the process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented. The embodiments of the present application and each feature in the examples can be combined with each other without conflict, and the formed technical solutions are all within the protection scope of the present application.

[0032] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the protection scope of the present application.

[0033] It should be noted that the terms "include" and "have" in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device containing a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] Embodiment one

[0035] The embodiment discloses a communication base station power supply voltage control energy saving system based on communication load. The existing communication base station is generally a 4G or 5G base station, and the power consumption of the 5G base station device is generally 3-4 times that of the 4G device, mainly in the hardware aspect. Therefore, the hardware aspect can effectively reduce the power consumption of the 5G device by adopting energy-saving technologies such as advanced chip technology, high-integration special integrated circuit (ASIC) chip, etc. In terms of software energy-saving technology, the power-saving strategies of 4G network and 5G network can be the same, effectively reducing the power consumption of the base station, which is the key to reducing the operating cost of the operator and realizing energy saving and emission reduction.

[0036] The embodiment takes the 4G and 5G antennas of the communication base station as an example. The power supply voltage of the communication load has a running range. Combined with the power characteristics of the 4G and 5G antennas, different communication loads have different running powers under different power supply voltages. A complete set of power supply voltage control energy-saving technology based on communication load is given. The low-carbon system realizes the low-carbon energy-saving operation of the communication base station by controlling the power supply voltage.

[0037] With the rapid development of 5G technology in China, the contradiction between the growth of mobile communication network data and high power consumption is further intensified, and how to effectively realize the energy saving and consumption reduction of communication base station has become a problem that needs to be solved at present, and will also become the demand faced by the sustainable development of the communication industry in the future. Therefore, a power supply voltage control energy saving technology based on communication load is proposed to reduce the energy consumption of the base station, improve the proportion of green electricity in the use of electric energy, and further reduce the operating cost. In the process of voltage control, a large amount of voltage control data needs to be sent according to the load condition of each base station, and the optimal voltage control energy saving result also depends on a large amount of data. The embodiment proposes a communication base station power supply voltage control energy saving system based on communication load, which first constructs a cloud instruction communication control system for collecting base station data and issuing instructions,

[0038] As shown in Figure 1 、 Figure 2 、 Figure 3 The embodiment includes a cloud platform, an energy storage battery, a line switching unit, and a voltage control unit. The commercial power grid is connected to the energy storage battery and the antenna in the communication base station through the voltage control unit, and the energy storage battery is connected to the antenna in the communication base station through the voltage control unit. The voltage control unit controls the voltage output by the commercial power grid to the energy storage battery and the antenna, and controls the voltage output by the energy storage battery to the antenna. The line switching unit is used to control the line connection between the commercial power grid and the energy storage battery, the line connection between the commercial power grid and the antenna, and the line connection between the energy storage battery and the antenna. The cloud platform is in communication connection with the control system in the communication base station, and the control system in the communication base station is in control connection with the line switching unit and the voltage control unit. The cloud platform obtains the load data of the communication base station and the typical power data of the antenna through the control system, and generates control instructions based on the load data and transmits them to the control system of the communication base station. The control system of the communication base station controls the operation of the line switching unit and the voltage control unit based on the control instructions.

[0039] In the embodiment, the line switching unit includes several circuit breakers, which are respectively connected to the line between the commercial power grid and the energy storage battery, the line between the commercial power grid and the antenna, and the line between the energy storage battery and the antenna. The control ends of each circuit breaker are connected to the control system in the communication base station, so that the control system in the communication base station controls the connection points of the corresponding circuit breakers to be conducted to control the connection of the corresponding lines.

[0040] Specifically as Figure 1As shown, in this embodiment, power supply is carried out in a bus mode, the power grid is connected to the DC bus through the circuit breaker K1 and the switching power supply, and the DC bus is also connected to the photovoltaic cell and the wind power equipment through the circuit breakers K4 and K5 and the inverter, so that any one of the power grid, the photovoltaic cell and the wind power equipment can supply power to the DC bus. The energy storage battery is connected to the DC bus through the circuit breaker K3, and the DC bus is also connected to the 4G load (i.e. the 4G antenna) and the 5G load (i.e. the 5G antenna) through the circuit breakers K2-1 and K2-2, respectively. In addition, the energy storage battery is also connected to the 4G antenna and the 5G antenna through the circuit breakers K6 and K7, respectively.

[0041] The signal output end of the control system in the communication base station is electrically connected to the energizing coil in each of the circuit breakers K1, K2-1, K2-2, K3, K4, K5, K6 and K7, and the energizing coil is energized or de-energized by the control system to control the on-off of the corresponding circuit breaker, thereby controlling the conduction of the line where the corresponding circuit breaker is located.

[0042] In this embodiment, the voltage control unit adopts a converter, and the power grid is connected to the energy storage battery and the electrical input end of the antenna in the communication base station through the converter, and the electrical output end of the energy storage battery is connected to the electrical input end of the antenna in the communication base station through the converter. The signal output end of the control system in the communication base station is connected to the control end of the voltage control unit, and the converter is controlled to work by the control system to achieve voltage regulation.

[0043] In this embodiment, the control system in the communication base station adopts a digital direct controller DDC, and the on-off of the circuit breakers is controlled by the digital direct controller DDC according to different time periods and strategies to achieve different working conditions. The digital direct controller DDC is in communication connection with the cloud platform through a communication line. The digital direct controller DDC monitors the running conditions of the field devices, power consumption data, and abnormal running alarms, uploads data to the cloud platform through the 4G / 5G module of the energy communication gateway through a data transmission protocol, and the cloud platform gives load control instructions according to different time periods and monitors the effectiveness of the load switch state confirmation instructions. The power generation and power consumption of each device are directly read by the wattmeters W1-W5, and the power consumption of the load in each time period can be calculated from the data.

[0044] Embodiment Two

[0045] The embodiment discloses a control energy-saving method of the communication base station power supply voltage control energy-saving system based on communication load according to the embodiment one, as shown in Figure 9 The embodiment discloses a control energy-saving method of the communication base station power supply voltage control energy-saving system based on communication load according to the embodiment one, as shown in

[0046] Step 1: The cloud platform obtains the communication base station load data and the antenna load typical power data through the control system, and fills and cleans the obtained data.

[0047] In this embodiment, the base station center load data provided by the cloud platform is mainly periodic, and when the base station communication monitoring system or host fails, some data of the electric meter reading will be lost, so it is necessary to fill in the missing values in the base station load and energy storage data set to avoid omission and affect the subsequent data arrangement and analysis. The method adopted in this embodiment is to fill in the missing values from back to front to avoid omission, that is, to fill in the values of the next day with the values of the previous day, and then to fill in the values of the previous column with the values of the next day. As long as any one of the three values is not missing, it has been filled in. This embodiment also explores the extracted sample data situation, locates the missing values and outliers, and can perform a descriptive statistics on the attribute values to check which values are unreasonable. If the value in the sample does not belong to the specified interval range, it indicates that the data attribute of the sample belongs to an outlier, and a suitable cleaning method is selected to carry out data cleaning. Here, the replacement method is used to directly replace the missing values and outliers with the mode. Considering the information system source, quality and availability of the data, the data requirements are determined, the data extraction is carried out, and the corresponding system sample data is extracted. Through big data research, it can be known that the power of each base station and the number of devices such as mobile phones and computers accessing the base station in each time period of a day. The extracted sample data situation is explored, the missing values and outliers are located, a suitable cleaning method is selected, and data cleaning is carried out. According to the collected data, the data analysis method and technology are used to mine the rules between power supply voltage control and communication base station energy saving in different regions, different voltage levels and different engineering types of projects one by one.

[0048] Then, the cloud platform obtains a first low value time inflection point at which the communication base station load average utilization rate changes from high to low and tends to be stable, and a second low value time inflection point at which the communication base station load average utilization rate changes from low to high, based on the communication base station load data in a set time period, and obtains the optimal power supply voltage of the antenna when the power consumption is the lowest based on the antenna load typical power data.

[0049] There are many factors affecting the energy consumption of base station main equipment, but the main factor is the traffic of the base station, that is, the base station load. In general, the real-time power of 5G base station communication equipment, wireless utilization rate, baseband unit, wireless unit and the like are related.

[0050] Since most users use communication services during the day, the load of the base station has a certain periodicity, and the power characteristics of the base station are mainly related to the voltage. The system needs to adjust the voltage according to the load size to improve the efficiency of the power amplifier and reduce the power consumption of the base station to achieve the effect of energy saving. Therefore, it is necessary to know the power characteristics of the antenna to select the best voltage to achieve the effect of energy saving.

[0051] (1) Base station power consumption model construction

[0052] 4G, 5G mobile communication network structure includes: core network, bearer network and wireless access network, the overall structure as shown in Figure 4

[0053] 4G network base station device type is less, frequency band, all use distributed base station, initial construction of a basic network, in the user of the area to increase coverage and capacity, on this basis to build the second network, after the construction of the Internet of things dedicated network. 4G network room distribution base station and scene related, configuration is also different, and macro base station difference, using the average distribution method to estimate the power consumption, 4G network power level see table 1.

[0054] Table 1 4G network power level

[0055] Serial number Base station type Base station number (unit) Power consumption (kW) 1 Macro base station 10000 1.3 2 Pole station 1000 0.6 3 Room division coverage base station 7400 1

[0056] 5G base station network also uses distributed base station, base station structure and 4G base station is not much different, divided into macro base station, pole station, indoor base station, etc., according to the proportion of 1:1 using the average distribution method to estimate the power consumption of 5G base station, see table 2. 5G base station room distribution base station quantity and 4G base station, construction mode is divided into: distributed system, active distributed system.

[0057] Table 2 5G network power consumption estimation compared with 4G base station 1:1

[0058] Serial number Base station type Base station number (unit) Power consumption (kW) 1 Macro base station 10000 4 2 Pole station 2000 0.6 3 Room division coverage base station 7400 5

[0059] As can be seen, the reference data of 4G base station power consumption is 1.3kW, and the reference data of 5G base station power consumption is 4kW, as shown in Figure 5

[0060] 4G base station power consumption and 5G base station power consumption is very different, but mainly and load related and wireless utilization rate related, the higher the base station load, the greater the power consumption, the base station main equipment power consumption formula as follows:

[0061] P l =P BBU +P RF

[0062] P RF =T×P load +P0n

[0063] Where, P l is the total energy consumption of base station main equipment, P bbu is the energy consumption of base station BBU, P RF is the energy consumption of 4G RRU or 5G AAU, P load represents the base station load, T different types of base station reference value, P0n for the static power of radio frequency part.

[0064] ​​The base station radio utilization rate is usually obtained by measured data, and Table 3 shows the relationship between the measured radio utilization rate and the average power consumption of AAU and RRU.

[0065] Table 3 Relationship between radio utilization rate and average power consumption of AAU and RRU

[0066] Wireless utilization rate / % AAU average power consumption / % RRU average power consumption / % 0 608.5 328.2 30 826.6 302.5 70 985.5 303.6 100 1236.5 310.8

[0067] The 4G base station and 5G base station AAU and RRU power consumption is obtained by fitting the above radio utilization rate data and power consumption data as follows:

[0068] P RRU = 366.67 x η1+ 99.07

[0069] P AAU = 316.6 x η2+ 361.85

[0070] wherein P RRu is the 4G base station RRU power consumption, P RF = P RRu when the base station is a 4G base station; η1 is the 4G radio utilization rate (average occupied RB number / total number of RBs); P AAu is the 5G base station AAU power consumption, P RF = P AAu when the base station is a 5G base station; and η2 is the 5G radio utilization rate (average occupied RB number / total number of RBs).

[0071] (2) 4G and 5G antenna power characteristic model

[0072] This embodiment takes one day as a time period, and selects the data of the typical power of the communication base station load in the time period of 20:00-21:00 for analysis. The power characteristics of the 4G antenna of the communication base station are shown in Figure 6 , and a segmented power sampling fitting model is adopted, and the equation is as follows:

[0073] 46-47V:

[0074] 47-48V:

[0075] 48-49V:

[0076] 49-50V:

[0077] 50-51V: P5 = ln(23.83V) + 0.853 V -2.48V 1.1 -7.47

[0078] 51-52V: P6 = 0.00422V 2 +e 0.043V -9.233

[0079] 52-53V: P7 = 0.0023V 2 +e 0.057V -18.742

[0080] 53-54V: P8 = 0.0237e 0.0892V +0.198V 1.294 -1.478V-38.23

[0081] 54-55V: P9 = log44.32V-3.742 0.0032V -7.123

[0082] The power characteristics of the communication base station 5G antenna are shown in Figure 7 Figure 6, using a piecewise power sampling fitting algorithm, with the following equations:

[0083] 46-47V:

[0084] 47-48V:

[0085] 48-49V:

[0086] 49-50V:

[0087] 50-51V: P5 = 0.004V 2 +e 0.03V -14.261

[0088] 51-52V: P6 = ln(34.65V)-0.0063V 2 -10.071

[0089] 52-53V: P7 = 0.937 V +ln(34.65V)-2V 1.1 -8.36

[0090] 53-54V: P8 = 0.26V 1.3 +0.033e 0.0932V -1.365V-23.23

[0091] 54-55V: P9 = log36.71V-3.612 0.005V -3.285

[0092] From the above, the 4G, 5G antenna optimal power supply voltage range is 48-52V, at this time the power consumption is lowest. Therefore, during 6:00-22:00, the mains switch is turned off, and the voltage of the energy storage battery is adjusted to within 48-52V, for example, 50V is selected as the optimal power supply voltage of the antenna, at this time the power consumption is lowest; during 22:00-6:00, the switch is closed to access the mains, and since the energy storage battery must be charged at 55V or above, the power supply voltage is adjusted to the charging voltage of the energy storage battery, 55V, and the antenna and the energy storage battery are powered by the mains.

[0093] (3) Analysis of communication load inflection point and communication base station energy storage battery switching judgment

[0094] This embodiment is based on base station communication load data, and determines the time node corresponding to the energy saving strategy according to the communication load. Based on network performance indicators, the average utilization rate of base station communication load within a week is analyzed to determine the low value time inflection point of communication load utilization rate. As shown in Figure 8 , the first low value time inflection point 1 is 22:00, which is the time point when the utilization rate changes from high to low and tends to be stable in a day; the second low value time inflection point 2 is 6:00, which is the time point when the utilization rate changes from low to high until the load utilization rate is the same as the low value time inflection point utilization rate.

[0095] From Figure 6 , it can be obtained that the first low value time inflection point 1 is the energy storage battery input time point, and the second low value time inflection point 2 is the energy storage battery output time point. Between the first low value time inflection point 1 and the second low value time inflection point 2 (22:00-6:00), at this time, the number of mobile phones, computers and other devices accessing the base station is very small, and the mains power supply switch of the communication base station is closed, and the antenna is powered by the mains, and the energy storage battery is charged at the same time, so as to ensure that the next day can operate normally and does not need to use the peak price of the mains; between the second low value time inflection point 2 and the first low value time inflection point 1 (6:00-22:00), at this time, the peak time electricity price period, most people use mobile phones, computers and other devices, and many people access the communication base station, and the mains power supply switch of the communication base station is turned off, and the energy storage battery is used to power the antenna, which can greatly reduce the consumption of energy. The running mode of the energy storage battery after using the power supply voltage control energy saving technology is shown in Table 4.

[0096] Table 4 Energy storage battery running mode

[0097]

[0098] Step 2, the cloud platform transmits the first low value time inflection point, the second low value time inflection point and the optimal power supply voltage of the antenna obtained in step 1 to the control system of the communication base station;

[0099] Step 3, the communication base station control system controls the line switching unit to connect the power grid and the antenna, and the power grid and the energy storage battery, and controls the voltage control unit to convert the voltage of the power grid into the charging voltage of the energy storage battery, and supplies power to the antenna and charges the energy storage battery with the charging voltage of the energy storage battery during the period from the first low value time inflection point to the second low value time inflection point.

[0100] The communication base station control system controls the line switching unit to disconnect the power grid and the antenna, and connects the energy storage battery and the antenna, and controls the voltage control unit to convert the voltage of the power grid into the optimal antenna supply voltage obtained in step 1, and supplies power to the antenna with the optimal antenna supply voltage from the energy storage battery during the period from the second low value time inflection point to the first low value time inflection point.

[0101] In this embodiment, the communication base station leadership layer issues instructions through background data. A load standard n' can be set. When n' < n, the load of the access base station is large at this time, and the voltage should be adjusted to 50V; when n < n', the load is smaller at this time, and the supply voltage is adjusted to 55V.

[0102] In this embodiment, by adding an energy storage battery, the energy storage battery is charged during the low price period, and the antenna operates at about 55V. During the high price period, the energy storage battery supplies power to the antenna, and the antenna operates at about 50V, and the required power is at the lowest point. The low-carbon system realizes control of the supply voltage, energy-saving operation, and cost reduction. The segmented power sampling comparison algorithm is used to calculate the power consumption before and after the supply voltage control energy-saving technology, the base station energy-saving technology model is built, and suggestions are made for the long-term supply voltage control strategy of the regional power grid.

[0103] Embodiment three

[0104] This embodiment verifies the effectiveness of the method of embodiment two by building a cloud instruction voltage control energy-saving benefit model, and illustrates that the control energy-saving method of the communication base station supply voltage control energy-saving system based on communication load proposed above can effectively reduce the power supply cost. The process is as follows:

[0105] The energy-saving benefits after the supply voltage control energy-saving technology based on communication load can be divided into energy storage benefits and energy-saving benefits. The energy storage benefits are related to the charging of the energy storage battery by the power grid and the peak-valley electricity price of the power grid, and are the benefits of shifting the peak-valley electricity price by the energy storage minus the energy storage charging and discharging cost.

[0106] The total benefit is: maxF = F1 + F2

[0107] The energy storage energy-saving F1 benefit is:

[0108]

[0109] In the formula, C p The electricity price during the charging period of the energy storage battery, C op P is the electricity price during the discharge period of the energy storage battery. load (t) represents the base station load, P a (t) represents the energy storage charging and discharging power, η c η d ρ represents the energy storage charge / discharge efficiency, and ρ represents the energy conversion efficiency of the energy storage battery.

[0110] During the day, the voltage should be controlled between 48-52V. The formula for its benefit F2 is as follows:

[0111]

[0112]

[0113] The voltage should be controlled at 55V at night, and the benefit formula is as follows:

[0114]

[0115]

[0116] In the formula, F2 represents the energy consumption reduction benefit of voltage control, and P m To reduce energy consumption, P BBu η1 represents the power consumption of the base station BBU, T represents the type of base station (4G or 5G), η1 represents the wireless utilization rate, and U represents the control voltage.

[0117] The energy consumption data of a 5G base station measured using voltage control technology and without voltage control technology are as follows: Figure 10 As shown, the energy consumption before and after voltage control is calculated, and finally the benefit is calculated according to the formula for benefit F2. Obviously, energy consumption is reduced after controlling the base station voltage, and the benefit can be obtained according to the formula for benefit F2 and the reduced energy consumption data.

[0118] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. These embodiments are merely descriptions of preferred embodiments and are not intended to limit the scope or concept of the invention. The specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. Such combinations, as long as they do not violate the spirit of the present invention, should also be considered as part of this disclosure. To avoid unnecessary repetition, the present invention will not further describe the various possible combinations.

[0119] The present application is not limited to the specific details of the above-described embodiments, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art within the technical concept of the present application and without departing from the design idea of the present application shall fall within the protection scope of the present application, and the technical content of the present application claimed for protection has been entirely recorded in the claims.

Claims

1. A communication base station power supply voltage control energy-saving system based on communication load, characterized in that, The system includes a cloud platform, an energy storage battery, a line switching unit, and a voltage control unit. The mains power grid is connected to the energy storage battery and the antenna in the communication base station via the voltage control unit. The energy storage battery's output terminal is also connected to the antenna's input terminal via the voltage control unit. The voltage control unit controls the voltage output from the mains power grid to the energy storage battery and the antenna, as well as the voltage output from the energy storage battery to the antenna. The line switching unit controls the connection and disconnection of the lines between the mains power grid and the energy storage battery, between the mains power grid and the antenna, and between the energy storage battery and the antenna. The cloud platform is communicatively connected to the control system in the communication base station. The control system in the communication base station is controllably connected to the line switching unit and the voltage control unit. The cloud platform acquires the communication base station's load data and typical antenna load power data through the control system. Based on the load data, the cloud platform generates control commands and transmits them to the communication base station's control system. The communication base station's control system controls the line switching unit and the voltage control unit based on the control commands. The cloud platform acquires communication base station load data and typical antenna load power data through the control system. Based on the communication base station load data and the wireless utilization rate obtained by experimental measurement, the cloud platform establishes a communication base station power consumption model. Then, based on the communication base station power consumption model, it obtains the average utilization rate curve of the communication base station load within a set time period. Finally, based on the average utilization rate curve of the communication base station load, it determines the first low value time inflection point from high to low and tending to stabilize, and the second low value time inflection point from the stable low value to high. Based on the typical antenna load power data, the cloud platform obtains the optimal antenna supply voltage when the power consumption is the lowest. The cloud platform transmits the first low-value time inflection point, the second low-value time inflection point, and the optimal power supply voltage for the antenna to the control system of the communication base station. During the time period from the first low value time inflection point to the second low value time inflection point, the control line switching unit controls the connection between the mains power grid and the antenna, and between the mains power grid and the energy storage battery. The control voltage control unit controls the mains power grid voltage to be converted into the charging voltage of the energy storage battery. The mains power grid supplies power to the antenna and charges the energy storage battery with the charging voltage of the energy storage battery. During the time period between the second low value time inflection point and the first low value time inflection point, the control line switching unit controls the mains power grid to disconnect from the antenna and the energy storage battery to conduct to the antenna. The control voltage control unit controls the mains power grid voltage to convert it into the optimal power supply voltage for the antenna, and the energy storage battery supplies power to the antenna with the optimal power supply voltage for the antenna. The power consumption formula for the base station main equipment is as follows: , Among them, P l P represents the total energy consumption of the base station's main equipment. BBU For the energy consumption of the base station BBU, P RF For 4G RRU power consumption or 5G AAU power consumption, P load T represents the base station load, T is the reference value for different types of base stations, and P0n is the static power consumption of the radio frequency section. The power consumption of AAU and RRU for 4G and 5G base stations is as follows: , Among them, P RRU For 4G base station RRU power consumption, when the base station is a 4G base station, P RF = P RRU η1 represents 4G wireless utilization; P AAU For the power consumption of the 5G base station AAU, when the base station is a 5G base station, P RF = P AAU η2 represents 5G wireless utilization.

2. The energy-saving system for power supply voltage control of communication base stations based on communication load according to claim 1, characterized in that, The voltage control unit includes a converter. The control system in the communication base station is electrically connected to the converter. The mains power grid is connected to the energy storage battery and the antenna input terminal in the communication base station through the converter. The energy storage battery output terminal is connected to the antenna input terminal in the communication base station through the converter. The line switching unit includes circuit breakers connecting the mains power grid and the energy storage battery, the mains power grid and the antenna, and the energy storage battery and the antenna. The control system in the communication base station is also electrically connected to each circuit breaker. The control system in the communication base station controls the circuit breakers to switch the lines, and controls the converter to change the voltage in the corresponding lines.

3. A control and energy-saving method for a communication base station power supply voltage control energy-saving system based on communication load as described in claim 1 or 2, characterized in that, Includes the following steps: Step 1: The cloud platform obtains communication base station load data and typical antenna load power data through the control system. Based on the communication base station load data, the cloud platform obtains the first low value time inflection point where the average utilization rate of the communication base station load changes from high to low and tends to stabilize within a set time period, and the second low value time inflection point where the average utilization rate of the communication base station load changes from a stable low value to a high value. Based on the typical antenna load power data, the cloud platform obtains the optimal antenna power supply voltage when the power consumption is the lowest. Step 2: The cloud platform transmits the first low-value time inflection point, the second low-value time inflection point, and the optimal power supply voltage for the antenna obtained in Step 1 to the control system of the communication base station. Step 3: During the time period from the first low value time inflection point to the second low value time inflection point, the control line switching unit of the communication base station control system enables the connection between the mains power grid and the antenna, and between the mains power grid and the energy storage battery, and controls the voltage control unit to convert the voltage of the mains power grid into the charging voltage of the energy storage battery, so that the mains power grid supplies power to the antenna and charges the energy storage battery with the charging voltage of the energy storage battery. During the time period between the second low-value time inflection point and the first low-value time inflection point, the control line switching unit disconnects the mains power grid from the antenna and connects the energy storage battery to the antenna. The control voltage control unit converts the voltage of the mains power grid into the optimal antenna supply voltage obtained in step 1, and the energy storage battery supplies power to the antenna at the optimal antenna supply voltage.

4. The control and energy-saving method of the communication base station power supply voltage control energy-saving system based on communication load according to claim 3, characterized in that, In step 1, the cloud platform extracts sample data from the acquired data, locates missing values ​​and outliers in the sample data, and then obtains the missing values ​​and outliers of the entire acquired data based on the location of the sample data. The cloud platform then uses a replacement method to clean the data for missing values ​​and outliers in the acquired data.

5. The control and energy-saving method of the communication base station power supply voltage control energy-saving system based on communication load according to claim 3, characterized in that, In step 1, the cloud platform uses a segmented power sampling and fitting method based on typical antenna load power data to establish an antenna power characteristic model for different power supply voltage ranges, and determines the optimal antenna power supply voltage when power consumption is minimized based on the established antenna power characteristic model.

6. The control and energy-saving method of the communication base station power supply voltage control energy-saving system based on communication load according to claim 3, characterized in that, In step 1, the cloud platform establishes a power consumption model for communication base stations based on the wireless utilization rate obtained from experimental measurements using communication base station load data. Then, based on the power consumption model, it obtains the average utilization rate curve of the communication base station load within a set time period. Finally, it determines the first low value time inflection point and the second low value time inflection point based on the average utilization rate curve of the communication base station load.

Images