CN210608672U - Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption - Google Patents
Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption Download PDFInfo
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- CN210608672U CN210608672U CN201921554903.9U CN201921554903U CN210608672U CN 210608672 U CN210608672 U CN 210608672U CN 201921554903 U CN201921554903 U CN 201921554903U CN 210608672 U CN210608672 U CN 210608672U
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model relates to a new forms of energy technical field discloses a but energy saving and consumption reduction's scene electricity stores up communication base station stand-by power supply system, including solar cell panel, aerogenerator, scene complementary control ware, public electric wire netting and reserve lithium cell group, solar cell panel and aerogenerator are connected with scene complementary control ware electricity respectively, scene complementary control ware electricity is connected to-48 VDC direct current generating line, public electric wire netting is connected with the triphase kilowatt-hour meter electricity through commercial power input switch, rethread rectifier switch electricity is connected to the rectifier, through preventing that reverse current diode exports-48 VDC direct current generating line, reserve lithium cell group is connected to the current-limiting module that charges through a battery switch electricity, the current-limiting module that charges is connected with hall current sensor electricity, hall current sensor is connected with-48 VDC direct current generating line electricity. The technical scheme of the utility model solar energy, wind energy and energy storage battery can be effectively utilized and interactive power supply is carried out, have improved basic station energy utilization, have saved power consumption greatly.
Description
Technical Field
The utility model relates to a new forms of energy technical field, in particular to but energy saving and consumption reduction's scene electricity stores up communication base station stand-by power supply system.
Background
The current energy consumption of the telecommunication industry is mainly concentrated in base stations which are widely distributed, and the energy consumption of the base stations is mainly electricity. The energy conservation and emission reduction work of the base station can be well done, and the main targets of energy conservation and emission reduction of operators all year round can be effectively realized. Under the current technical conditions, the low-power-consumption base station equipment is replaced in a large area, and by reducing the effective power consumption of the base station, great breakthrough is difficult to realize. The new green energy is applied to replace or partially replace the original energy supply of the base station, and meanwhile, the fine management of the electric charge of the base station is enhanced, so that the method becomes one of the most effective means for reducing the energy consumption of the base station and controlling the electric power cost, and has great significance for the self development and social development of enterprises.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a but energy saving and consumption reduction's scene electricity stores up communication base station stand-by power supply system aims at through energy optimal configuration and combination, can reduce the power consumption of basic station on a large scale under the prerequisite of guaranteeing communication base station power supply stability and reliability, reduces fortune dimension cost, reaches whole energy saving and emission reduction's target.
In order to achieve the above object, the utility model provides an energy-saving and consumption-reducing wind-solar-electricity storage communication base station standby power supply system, which comprises a wind-solar complementary power generation system, a public power grid and a backup lithium battery pack, wherein the wind-solar complementary power generation system comprises a solar cell panel, a wind power generator and a wind-solar complementary controller, the output end of the solar cell panel is electrically connected to the photovoltaic cell interface of the wind-solar complementary controller, the output end of the wind power generator is electrically connected to the fan interface of the wind-solar complementary controller, the storage battery interface of the wind-solar complementary controller is electrically connected to a-48 VDC direct current bus through a controller direct current output switch, 380VAC three-phase alternating current mains supply output by the public power grid is electrically connected to a three-phase watt-hour meter through a mains input switch and is electrically connected to a rectifier through a rectifier switch after being, the rectifier is output to the-48 VDC direct current bus through the anti-reverse current diode, the backup lithium battery pack is electrically connected to the charging current limiting module through a battery switch, two ends of the charging current limiting module are respectively connected with a battery discharging switch and a discharging transition diode in parallel, the charging current limiting module, the battery discharging switch and the discharging transition diode are respectively electrically connected with the Hall current sensor, the Hall current sensor is electrically connected with the-48 VDC direct current bus, and the-48 VDC direct current bus is electrically connected with a communication base station load.
Optionally, the photovoltaic cell interface and the fan interface are respectively connected to the surge protector through a lightning protection air switch.
Optionally, the wind-solar hybrid power generation system further comprises an external unloading resistor, and the external unloading resistor is electrically connected with an unloading resistor interface of the wind-solar hybrid controller.
Optionally, the solar panel is formed by connecting 96 polycrystalline silicon solar cells in series to form a 48VDC solar panel.
Optionally, the backup lithium battery pack further comprises a battery management device, and the battery management device is electrically connected with the battery core, the hall current sensor and the charging current limiting module of the backup lithium battery pack respectively.
Optionally, the backup lithium battery pack adopts a 48VDC direct-current backup power supply formed by connecting a plurality of single battery cells in series and parallel.
Optionally, the battery discharge switch is a high voltage relay or a dc contactor.
Optionally, the utility power input switch, the rectifier switch, the controller dc output switch, the battery switch, and the dc output switch are all ac circuit breakers.
Adopt the technical scheme of the utility model, following beneficial effect has: the technical proposal of the utility model skillfully utilizes the complementarity of solar energy and wind energy in time and region, combines the two to realize day and night power generation, the surplus energy charges the backup lithium battery pack simultaneously, overcomes the problems of large randomness and poor power supply reliability caused by the influences of geographical distribution, seasonal variation, day and night alternation and the like when solar energy or wind energy is independently utilized, improves the continuity, stability and reliability of system power supply by the wind-solar complementary power generation system under the proper weather condition, finely manages the power consumption of the base station and adjusts the peak and valley strategy by combining the national peak and valley time-sharing power price policy, charges the battery pack only in the power consumption valley period, namely when the power grid price is the lowest, reduces the consumption of the base station to conventional energy and the carbon emission and pollution gas generated by the base station to the utmost extent, and reduces the electricity charge expenditure of telecommunication operators to the lowest, the energy utilization rate of the base station is improved, greater emission reduction benefits are obtained, the electric energy consumption is greatly reduced, the telecommunication operator is helped to greatly reduce the electric power operation and maintenance cost, the overall energy conservation and emission reduction target is realized, and the base station energy conservation and emission reduction method can be used as an energy conservation and consumption reduction scheme of the base station to be popularized and applied in a large scale.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of a topology structure of a wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an internal circuit of a charging current-limiting module of a wind-solar-electricity-storage communication base station standby power supply system according to an embodiment of the present invention;
fig. 3 is a communication network connection diagram in the communication base station power supply system of the wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a but energy saving and consumption reduction's scene electricity stores up communication base station stand-by power supply system.
As shown in fig. 1 to 3, in an embodiment of the present invention, the energy-saving and consumption-reducing wind, photovoltaic and energy-saving emergency power supply system for communication base station includes a wind and photovoltaic hybrid power generation system 100, a public power grid 200 and a backup lithium battery pack 300, where the wind and photovoltaic hybrid power generation system 100 includes a solar panel 101, a wind power generator 102 and a wind and photovoltaic hybrid controller 103, an output terminal of the solar panel 101 is electrically connected to a photovoltaic battery interface of the wind and photovoltaic hybrid controller 103, an output terminal of the wind power generator 102 is electrically connected to a fan interface of the wind and photovoltaic hybrid controller 103, a battery interface of the wind and photovoltaic hybrid controller 103 is electrically connected to a-48 VDC dc bus through a controller dc output switch, and a 380VAC three-phase ac mains power output by the public power grid 200 is electrically connected to a three-phase electric meter through a mains input switch after passing through a lightning protection switch and a surge protection device, and then is electrically connected to a rectifier through a rectifier switch, the rectifier is output to the-48 VDC direct current bus through an anti-reverse current diode, the backup lithium battery pack 300 is electrically connected to the charging current-limiting module 301 through a battery switch, two ends of the charging current-limiting module 301 are respectively connected with a battery discharging switch and a discharging transition diode in parallel, the charging current-limiting module 301, the battery discharging switch and the discharging transition diode are respectively electrically connected with the hall current sensor 302, the hall current sensor 302 is electrically connected with the-48 VDC direct current bus, and the-48 VDC direct current bus is electrically connected with the communication base station load 400.
Specifically, the wind-solar hybrid controller 103 is provided with a three-phase bridge rectifier circuit and a DC/DC converter circuit therein, and can convert the three-phase alternating current output by the wind turbine into a 48VDC direct current voltage.
Specifically, the three-phase watt-hour meter is used for measuring the electric energy consumed by the base station, and a power grid company collects the electric charge based on the electric energy; the rectifier converts three-phase ac power into pulsating DC voltage of about 513VDC, and this voltage is input to the step-down DC converter circuit DC/DC and converted into DC voltage of 48 VDC.
Specifically, photovoltaic cell interface and fan interface are connected to surge protector through a lightning protection air switch respectively, and surge protector's effect is let out thunderbolt surge current into the ground fast to the protection consumer avoids the thunderbolt, and the lightning protection air switch can cut off its and main loop's being connected after surge protector ages or damages rapidly, thereby avoids arousing other trouble to take place.
Specifically, the wind-solar hybrid power generation system 100 further includes an external unloading resistor 104, the external unloading resistor 104 is electrically connected to an unloading resistor interface of the wind-solar hybrid controller 103, and considering that overvoltage occurs in the wind-driven generator at an over-wind speed, which threatens the safety of the motor and the system, the unloading resistor needs to be added to ensure the safety of the system, and the wind-solar hybrid controller 103 automatically controls a conduction angle of a bidirectional thyristor, which is connected in series with the unloading resistor, inside according to the overvoltage, so as to stabilize the voltage of the system.
Specifically, the solar panel 101 adopts 96 polycrystalline silicon solar cells to be connected in series to form a 48VDC solar panel.
Specifically, the backup lithium battery pack 300 further includes a battery management device 303, the battery management device 303 is electrically connected to the electric core of the backup lithium battery pack 300, the hall current sensor 302 and the charging current limiting module 301, according to the mas law, charging and discharging of the lithium battery is a complex electrochemical process, and the acceptable current capacity of the lithium battery gradually decreases along with the progress of the charging process, so that the pure charging according to a constant current or a constant voltage does not conform to the charging characteristics and mechanisms of the lithium battery. The initial charging current of the constant voltage charging mode is large, which often causes the damage of the battery; in the constant current charging mode, the receiving capacity of the battery is reduced in the later charging period, the charging current utilization rate and the charging rate are reduced, and the battery can be overcharged and damaged.
Specifically, the charging current limiting module 301 is used for controlling and adjusting the charging current of the-48 VDC direct current bus to the backup lithium battery pack 300, an internal circuit schematic diagram of the charging current limiting module is shown in fig. 2, the battery management device 303 samples the voltage of a single battery cell in the backup lithium battery pack 300 and the induced current of the hall current sensor 302 in real time, and controls the duty ratio of the output PWM pulse driving signal according to the voltage and current values and the gauss acceptable current curve rule, so that the purpose of intelligently adjusting the charging current is achieved.
Specifically, the backup lithium battery pack 300 adopts a 48VDC direct-current backup power supply formed by connecting a plurality of single battery cells in series and parallel, plays two roles of energy regulation and load balancing in the system, and converts redundant electric energy output by the wind-solar hybrid power generation system into chemical energy for storage so as to be used when the power supply is insufficient.
Specifically, the battery discharge switch is a high-voltage relay or a direct-current contactor, is controlled by the battery management device 303, and realizes the functions of charge protection, discharge protection and uninterrupted switching of the lithium battery pack together with the charge current-limiting module and the discharge transition diode. The battery management device 303 uses high-reliability components, and has functions of protecting the lithium battery pack from overvoltage, undervoltage, overtemperature, overload and short circuit, and balancing the battery capacity. The battery management device 303 performs operation processing on various sampled analog quantity parameters, and performs core algorithm calculation such as battery pack remaining capacity (SOC), battery pack health condition (SOH), and battery pack maximum charge-discharge power (SOP) at the next time and related logic protection judgment actions according to the operation processing result.
Specifically, when the backup lithium battery pack 300 is in power shortage, the battery management device 303 disconnects the battery discharge switch, controls the duty ratio of the PWM pulse driving signal on the gate of the MOS transistor Q1 in the charging current limiting module to perform the staged constant current charging on the lithium battery pack, and at this time, the discharge transition diode is cut off due to the reverse voltage; when the backup lithium battery pack 300 is fully charged, the battery management device 303 disconnects the charging current limiting module, and the backup lithium battery pack 300 is in a standby state; when the power on the-48 VDC direct current bus is not enough to supply a base station load, the backup lithium battery pack 300 is uninterruptedly switched to the direct current bus through the discharging transition diode to start to provide the reserve energy, at the moment, the Hall current sensor 302 senses the discharging current and transmits the discharging current to the battery management device 303, the battery management device 303 immediately closes the battery discharging switch, and the short-circuit discharging transition diode enables the backup lithium battery pack 300 to continuously supply the energy through the battery discharging switch. The discharge transition diode is a high-power diode and has a voltage drop of 1-2 VDC, if a large current is continuously passed through, the discharge transition diode can generate heat and generate large power loss, and the discharge transition diode is ingeniously combined with the battery discharge switch, so that uninterrupted switching of the backup lithium battery pack 300 is realized, and heat generation and power consumption can be avoided.
Specifically, commercial power input switch, rectifier switch, controller direct current output switch, battery switch and direct current output switch are the alternating current circuit breaker, all belong to the fault protection switch, can cut off the major loop fault current fast, protect the power system operation safety.
Specifically, the communication base station load 400 includes a direct current load 401 and an alternating current load 402, the direct current load 401 includes a base station device, a transmission device and a moving loop monitoring device 4011, the alternating current load 402 is connected to the-48 VDC direct current bus through an inverter and an inverter input switch, the direct current load 401 is electrically connected to the-48 VDC direct current bus through a direct current output switch, the inverter, a three-phase watt-hour meter and the wind-solar hybrid controller 103 are respectively in data connection with the moving loop monitoring device 4011 through an RS485 bus, and the moving loop monitoring device 4011 is in data connection with a background data center 4012 through GPRS communication.
Specifically, the dynamic ring monitoring device 4011 is used for centralized monitoring of power equipment and environmental variables of a base station, acquisition of remote measurement, remote signaling and the like of each distributed independent power equipment, machine room environment and machine room security monitoring objects, real-time monitoring of operating states of systems, equipment and security, recording and processing of related data, timely fault detection, necessary remote control and remote adjustment operation, timely notification of personnel processing, realization of unattended operation of machine rooms and centralized monitoring, maintenance and management of power supplies and air conditioners, and improvement of reliability of power supply systems and safety of communication equipment. The inverter, the three-phase watt-hour meter, the battery management device and the wind-solar hybrid controller upload real-time running states and various digital quantity and analog quantity acquisition parameters to the moving ring monitoring device through an RS485 bus, the moving ring monitoring device collects various data information and then reports the data information to the background data center in an active mode through a GPRS communication mode by using an integrated wireless remote transmission unit, meanwhile, control instructions sent by the background data center can be received, and communication network links among control modules in the power supply system of the base station are shown in figure 3.
Specifically, combine the utility model provides a basic station electrical power generating system topological structure to 2KW communication load's basic station is as an example, and the wind-solar energy storage capacity configuration specification is as follows:
the configuration capacity of the backup lithium battery pack 300 is 48V/1000Ah, 2 groups of 48V/500Ah lithium iron phosphate battery packs are connected in parallel to form a group, each group is formed by connecting 16 combined battery cells in series, and the working voltage range is 43.2-57.6 VDC. The reserve energy of the backup lithium battery pack is 48KWh, and the backup lithium battery pack can independently supply power and operate for 24h under the condition that the mains supply is powered off and the wind-solar hybrid controller cannot generate power; and a 2KW wind-solar complementary controller is configured, wherein the rated power of a fan is 2KW, the rated power of solar energy is 600W, and the rated direct current output voltage is 48 VDC.
TABLE 1 time-of-use electricity price table for 2018 years of electric network sale in a certain province
According to the general industrial and commercial electricity price policy of the national development and improvement commission, a certain province in China executes peak-valley time-of-use electricity price, a table 1 is a power grid sale peak-valley time-of-use electricity price table in 2018 of the province, the basic electricity price is 0.8444 yuan/KWh, the peak electricity price is adjusted up to 180% on the basis of the basic electricity price, and the low-valley electricity price is adjusted down to 48% on the basis of the basic electricity price. The scheme aims at saving energy and reducing consumption and electric power operation cost, mainly uses wind-solar energy storage power generation and commercial power as auxiliary power, and assumes that the base station operates at full load for 24h, and the power supply mode and the working process are described as follows:
(1) in the daytime, when the sunlight is the strongest, the wind is small, the solar panel generates stable and reliable electricity, the wind-solar complementary controller adopts the Maximum Power Point Tracking (MPPT) technology to improve the solar energy utilization rate and provide 600W load power, and the backup lithium battery pack provides the residual 1400W load power through a battery discharge switch and a discharge transition diode;
(2) in the morning and evening, the illumination is weak, but the wind energy is enhanced due to large surface temperature difference change, the wind driven generator has energy output but low power, the wind-solar complementary controller provides certain load power through an internal rectifying circuit and a DC/DC direct current conversion circuit, and gap energy is supplemented by a backup lithium battery pack;
(3) under the condition of strong wind climate, the output power of the wind driven generator is larger, the wind-solar complementary controller provides 2KW load power through an internal rectification circuit and a DC/DC direct current conversion circuit, if surplus energy exists, the backup lithium battery pack is charged at the same time, but if the fan is overspeed or overloaded, the unloading resistor is put into time, and the surplus energy is consumed through the unloading resistor;
(4) under the weather condition that wind and sunlight coexist, the solar cell panel and the wind driven generator jointly provide load power through the wind-solar hybrid controller, if the output power exceeds 2KW, surplus energy is simultaneously charged to the backup lithium battery pack, if the lithium battery pack is in a full-charge state, the wind-solar hybrid controller unloads the fan through an unloading resistor, and the solar cell panel unloads in an open-circuit mode;
(5) at the low ebb period of electricity consumption at night, the electricity price is lowest, at the moment, if the wind speed is too low or under the windless condition, the commercial power of a public power grid is started, the commercial power supplies power to a communication load after rectification and voltage reduction direct current conversion, and meanwhile, a backup lithium battery pack is charged;
(6) during the peak period of power utilization, the commercial power of a public power grid is not started; if the power utilization level section is in a windless and sunlight-free weather condition and the backup lithium battery pack is in a power shortage state, starting the commercial power of a public power grid to supply power to a communication load and charging the backup lithium battery pack at the same time; when the lithium battery pack is fully charged, the battery management device disconnects the charging current-limiting module, and the lithium battery pack is in a standby state.
In summary, if comparing the conventional power supply system combining the commercial power, the oil engine and the lead-acid battery with the pure green energy-saving power generation system proposed by the present scheme and mainly using wind-solar energy storage power generation and commercial power as auxiliary power, for the communication base station with 2KW communication load, if the communication base station is operated at full load all the time, the conventional power supply system consumes the total commercial power 2KW × 365 × 24h 17520KWh annually, and should pay the electric charge [ (6/24) × 1.52 × KWh + (10/24) × 0.84 × KWh + (8/24) × 0.41/KWh ] × 17520KWh ═ 15184.6; the power supply system provided by the scheme only consumes the commercial power in the electricity consumption valley period, the total amount of the commercial power consumed each year is 2KW multiplied by 365 multiplied by 8h multiplied by 5840KWh, and the electric charge to be paid is 0.41 yuan/KWh multiplied by 5840KWh multiplied by 2394.4 yuan; the energy saving rate is 66.7 percent (17520 KWh-5840 KWh)/17520KWh, and the electric charge expense cost reduction rate is 84.2 percent (15184.6 yuan-2394.4 yuan)/15184.6 yuan.
Specifically, the utility model skillfully utilizes the complementarity of solar energy and wind energy in time and region, combines the two to realize day and night power generation, the surplus energy charges the backup lithium battery pack simultaneously, the problems of large randomness and poor power supply reliability caused by the influences of geographical distribution, seasonal variation, day and night alternation and the like when solar energy or wind energy is independently utilized are solved, under the proper weather condition, the wind-solar complementary power generation system improves the continuity, the stability and the reliability of the system power supply, the solar energy, wind energy and an energy storage battery are effectively utilized to carry out interactive power supply, meanwhile, the refined management and peak-and-valley-adjusting strategy are carried out on the power consumption of the base station by combining the national peak-and-valley time-sharing electrovalence policy, the consumption of the base station to the conventional energy and the carbon emission and the pollution gas generated thereby are reduced to the utmost extent, and the electricity charge of telecommunication operators is reduced to the lowest, the battery pack is charged only in the electricity consumption valley period, namely when the electricity price of the power grid is the lowest, so that the energy utilization rate of the base station is improved, greater emission reduction benefits are obtained, and the electric energy consumption is greatly saved; compared with the traditional base station power supply system, the wind-solar-electricity storage power supply system provided by the scheme has the advantages that the energy saving rate is 66.7%, the electricity expense cost is reduced by 84.2%, the telecommunication operator is helped to greatly reduce the electric power operation and maintenance cost, the overall energy saving and emission reduction aims are realized, and the wind-solar-electricity storage power supply system can be used as a base station energy saving and consumption reduction scheme to be popularized and applied on a large scale.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (8)
1. A wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption is characterized by comprising a wind-solar complementary power generation system, a public power grid and a standby lithium battery pack, wherein the wind-solar complementary power generation system comprises a solar cell panel, a wind driven generator and a wind-solar complementary controller, the output end of the solar cell panel is electrically connected to a photovoltaic cell interface of the wind-solar complementary controller, the output end of the wind driven generator is electrically connected to a fan interface of the wind-solar complementary controller, a storage battery interface of the wind-solar complementary controller is electrically connected to a-48 VDC direct current bus after passing through a controller direct current output switch, 380VAC three-phase alternating current mains supply output by the public power grid is electrically connected with a three-phase watt-hour meter through a mains supply input switch after being protected by a lightning protection air switch and a surge protector, and, the rectifier is output to the-48 VDC direct current bus through the anti-reverse current diode, the backup lithium battery pack is electrically connected to the charging current limiting module through a battery switch, two ends of the charging current limiting module are respectively connected with a battery discharging switch and a discharging transition diode in parallel, the charging current limiting module, the battery discharging switch and the discharging transition diode are respectively electrically connected with the Hall current sensor, the Hall current sensor is electrically connected with the-48 VDC direct current bus, and the-48 VDC direct current bus is electrically connected with a communication base station load.
2. The energy-saving and consumption-reducing wind, photovoltaic and electricity storage communication base station standby power supply system according to claim 1, wherein the photovoltaic battery interface and the fan interface are respectively connected to the surge protector through a lightning protection air switch.
3. The energy-saving and consumption-reducing wind-solar-electricity-storage communication base station standby power supply system according to claim 1, wherein the wind-solar-electricity-complementary power generation system further comprises an external unloading resistor, and the external unloading resistor is electrically connected with an unloading resistor interface of the wind-solar-electricity-complementary controller.
4. The energy-saving and consumption-reducing wind, photovoltaic and energy-storage communication base station standby power supply system is characterized in that 96 polycrystalline silicon solar cells are adopted by the solar cell panel to be connected in series to form a 48VDC solar cell panel.
5. The energy-saving and consumption-reducing wind, photovoltaic, electricity and storage communication base station standby power supply system according to claim 1, wherein the standby lithium battery pack further comprises a battery management device, and the battery management device is electrically connected with the battery core, the hall current sensor and the charging current limiting module of the standby lithium battery pack respectively.
6. The energy-saving and consumption-reducing wind-solar-electricity-storage communication base station backup power supply system according to claim 1, wherein a plurality of single battery cells are connected in series and parallel to form a 48VDC direct-current backup power supply for the backup lithium battery pack.
7. The energy-saving and consumption-reducing wind-solar-electricity-storage communication base station standby power supply system according to claim 1, wherein the battery discharge switch is a high-voltage relay or a direct-current contactor.
8. The energy-saving and consumption-reducing wind, photovoltaic and energy-storage communication base station standby power supply system according to claim 1, wherein the mains supply input switch, the rectifier switch, the controller direct-current output switch, the battery switch and the direct-current output switch are all alternating-current circuit breakers.
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| CN201910878786.XA CN110635559A (en) | 2019-09-17 | 2019-09-17 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
| CN201921554903.9U CN210608672U (en) | 2019-09-17 | 2019-09-17 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
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| CN201910878786.XA CN110635559A (en) | 2019-09-17 | 2019-09-17 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
| CN201921554903.9U CN210608672U (en) | 2019-09-17 | 2019-09-17 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110635559A (en) * | 2019-09-17 | 2019-12-31 | 深圳市誉娇诚科技有限公司 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
| CN112260318A (en) * | 2020-10-31 | 2021-01-22 | 青岛百腾通信技术工程有限公司 | System for improving stability of 5G communication base station and control method thereof |
| CN113394867A (en) * | 2021-05-27 | 2021-09-14 | 利天万世新能源有限公司 | Intelligent control energy storage system of 5G communication equipment |
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| CN111162552A (en) * | 2020-01-21 | 2020-05-15 | 福建时代星云科技有限公司 | Peak clipping and valley filling method applied to communication base station power supply |
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| CN101673963A (en) * | 2009-02-10 | 2010-03-17 | 路建乡 | Wind and solar hybrid generation system for communication base station based on dual direct-current bus control |
| CN101814769B (en) * | 2010-03-08 | 2012-06-27 | 北京凯华网联新能源技术有限公司 | Electricity supply system of wind and light commercial power complementary communication base station |
| CN102510047B (en) * | 2011-11-15 | 2014-11-26 | 深圳Tcl新技术有限公司 | Charge and discharge protection device for 3D (three-dimensional) glasses |
| CN103117564B (en) * | 2013-01-25 | 2014-12-10 | 中国电力科学研究院 | Coordinated control system and method for wind-solar hybrid power generation |
| CN110635559A (en) * | 2019-09-17 | 2019-12-31 | 深圳市誉娇诚科技有限公司 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635559A (en) * | 2019-09-17 | 2019-12-31 | 深圳市誉娇诚科技有限公司 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
| CN112260318A (en) * | 2020-10-31 | 2021-01-22 | 青岛百腾通信技术工程有限公司 | System for improving stability of 5G communication base station and control method thereof |
| CN112260318B (en) * | 2020-10-31 | 2021-11-16 | 厦门市合佳兴电子有限公司 | System for improving stability of 5G communication base station and control method thereof |
| CN113394867A (en) * | 2021-05-27 | 2021-09-14 | 利天万世新能源有限公司 | Intelligent control energy storage system of 5G communication equipment |
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