CN103312004A - Intelligent oil-electricity hybrid power system of communication base station - Google Patents
Intelligent oil-electricity hybrid power system of communication base station Download PDFInfo
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- CN103312004A CN103312004A CN2013102625900A CN201310262590A CN103312004A CN 103312004 A CN103312004 A CN 103312004A CN 2013102625900 A CN2013102625900 A CN 2013102625900A CN 201310262590 A CN201310262590 A CN 201310262590A CN 103312004 A CN103312004 A CN 103312004A
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- 238000004891 communication Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical group [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 241000282414 Homo sapiens Species 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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- 230000011664 signaling Effects 0.000 description 1
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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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Abstract
The invention discloses an intelligent oil-electricity hybrid power system of a communication base station. The intelligent oil-electricity hybrid power system comprises mains supply, hybrid energy, a hybrid energy manager, a DC/DC (direct current/direct current) conversion controller and a storage battery. The hybrid energy comprises a diesel generating set which is a variable-frequency direct-current generating set, wind energy and solar energy. The mains supply and the hybrid energy are connected with an input end of the hybrid energy manager. An output end of the hybrid energy manager is connected with an input end of the DC/DC conversion controller. An output end of the DC/DC conversion controller is connected with a load. The storage battery is connected with the load and the output end of the DC/DC conversion controller. By the intelligent oil-electricity hybrid power system, seamless switching between the variable-frequency direct-current generating set and renewable energy is realized, the renewable energy can be fully utilized while atmospheric pollution can be reduced, and great significance for human environment protection is achieved.
Description
Technical Field
The invention relates to an intelligent oil-electricity hybrid power supply system of a communication base station
Background
At present, no commercial power communication base station generally adopts a diesel generator set to supply power. More than one hundred thousand base stations in the middle east, north africa, southeast asia and western regions of China are powered by diesel generator sets. These base stations typically employ a pattern in which two diesel generators are powered in turn. The conventional power supply mode of the non-mains supply base station comprises two diesel generator sets 11 and 12, an automatic switching system (ATS)20, a storage battery 30 and a direct-current voltage control cabinet 40 (as shown in fig. 1). The automatic switching device 20 controls the two diesel generator sets 11 and 12 to alternately charge the storage battery 30. When the traditional diesel generator set is used in a communication base station, the traditional diesel generator set is in a low-load state for a long time, so that the energy consumption is relatively large, the efficiency is low, the carbon emission is large, and the traditional diesel generator set is not beneficial to environmental protection.
Wind energy and solar energy are the most mature renewable energy sources for the current technical development. However, the uncertainty of wind power resources and the discontinuity of solar energy cause the output electric energy power of the wind power generator and the solar panel to be pulsating and discontinuous, and the electric energy power cannot be directly used for the production and living power demand of people without control. Therefore, these new energy sources require a separate controller to access the hybrid energy system, which is expensive.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an intelligent oil-electricity hybrid power supply system of a communication base station, which realizes seamless switching between a variable-frequency direct-current generator set and renewable energy, enables the renewable energy to be effectively utilized, reduces air pollution and has great significance for protecting human environment.
The technical scheme for realizing the purpose is as follows: an intelligent oil-electricity hybrid power supply system of a communication base station comprises a commercial power supply, a hybrid energy source manager, a DC/DC conversion controller and a storage battery, wherein the hybrid energy source comprises a diesel generator set, wind energy and solar energy; the diesel generator is a variable frequency direct current generator set; the commercial power and the hybrid energy are connected with the input end of the hybrid energy manager, the output end of the hybrid energy manager is connected with the input end of the DC/DC conversion controller, the output end of the DC/DC conversion controller is connected with a load, and the storage battery is connected with the output end of the DC/DC conversion controller and the load; the hybrid energy manager realizes seamless switching of commercial power, a diesel generator set, wind energy and solar energy, can control the start and stop of the diesel generator set according to the power supply quality of the commercial power and the voltage of the storage battery, and can convert alternating-current voltage provided by the commercial power, the diesel generator set and the wind energy into first direct-current voltage; the DC/DC conversion controller is used for converting the first direct-current voltage provided by the hybrid energy manager into a second direct-current voltage to charge the storage battery and controlling the charging and discharging of the storage battery; the storage battery is used for storing electric energy of the second direct current voltage provided by the DC/DC conversion controller; when the optimal output power of the wind energy and the solar energy is larger than the actual consumed power of a load, the DC/DC conversion controller controls the storage battery to store redundant electric energy; when the optimal output power of wind energy and solar energy is smaller than the actual consumed power of a load, the DC/DC conversion controller controls the storage battery to release the stored electric energy to supplement the power difference, and when the release of the electric energy in the storage battery is finished, the hybrid energy manager starts the diesel generator set to charge the storage battery and carry the load.
The energy-saving oil-electricity hybrid power supply system of the communication base station comprises a wind energy and solar energy maximum power point tracking device, an AC/DC converter and an automatic switching device.
The intelligent oil-electricity hybrid power supply system of the communication base station is characterized in that the variable-frequency direct-current generator set comprises a variable-frequency engine, a permanent magnet synchronous motor and a control module.
In the intelligent oil-electricity hybrid power supply system of the communication base station, the storage battery is a lithium iron phosphate battery pack.
The intelligent oil-electricity hybrid power supply system of the communication base station is characterized in that the first direct current voltage is 300V, and the second direct current voltage is 48V.
The intelligent oil-electricity hybrid power supply system of the communication base station takes the variable-frequency direct-current diesel generator set as a core, different energy sources are adjusted and scheduled through the unified controller to complement power generation deficiency mutually, seamless switching between the variable-frequency direct-current generator set and renewable energy sources is realized, the output power can be automatically adjusted to be in an optimal state, the power generation efficiency is greatly improved, the oil consumption is greatly reduced, the energy is saved by 30-70%, the reliability of equipment is improved, the service life of the equipment is greatly prolonged, a base station air conditioner is not needed to perform auxiliary cooling in the using process, the hardware investment cost of the equipment is reduced, and the daily maintenance cost is also reduced. Compared with the traditional power supply mode of a single diesel generator set, the power supply system has the advantages that the cost is reduced, high-quality and stable electric quantity can be provided for the client, the renewable energy is effectively utilized, meanwhile, the emission of pollutants is reduced, and the power supply system has great significance for human environment protection.
Drawings
Fig. 1 is a block diagram of a power supply system of a communication base station of the prior art;
fig. 2 is a block diagram of an intelligent oil-electricity hybrid power supply system of a communication base station according to the present invention;
fig. 3 is a schematic diagram of a hybrid energy manager of the intelligent oil-electricity hybrid power system of the communication base station according to the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description is given with reference to the accompanying drawings:
referring to fig. 2 and 3, the intelligent oil-electricity hybrid power system of the communication base station of the present invention includes a utility power 1, a hybrid energy 2, a hybrid energy manager 3, a DC/DC converter controller 4, and a storage battery 5. The commercial power 1 and the hybrid energy 2 are connected with the input end of the hybrid energy manager 3, the output end of the hybrid energy manager 3 is connected with the input end of the DC/DC conversion controller 4, the output end of the DC/DC conversion controller 4 is connected with the load 6, and the storage battery 5 is connected with the output end of the DC/DC conversion controller 4 and the load 6.
The hybrid energy 2 comprises a diesel generator set 21, wind energy 22 and solar energy 23; wherein,
the diesel generator set 21 is a variable frequency direct current generator set and comprises a variable frequency engine, a permanent magnet synchronous motor and a control module, and the rotating speed of the engine can be automatically adjusted according to the change of load power, so that the output frequency and power of the generator are changed, and the generator set is enabled to work in the most energy-saving state all the time; mechanical power of the variable frequency engine is converted into a power supply with variable frequency and variable voltage, stable constant-voltage direct current is output through a PWM (pulse-width modulation) boosting rectification link, and a continuous, stable and uninterrupted power supply can be output even under the conditions of nonlinear load and unbalanced load; the permanent magnet synchronous motor adopts a bearingless structure, and the simple mechanical structure ensures that the motor has long service life, high efficiency and high reliability; the control module is matched with RS485, RS232 and USB communication ports, can realize remote monitoring or communication with a PC, completely realizes remote signaling, remote measuring and remote control functions, can read and write the operation parameters of the unit, and ensures the stable operation of the unit; the weight of the variable-frequency direct-current generator set is less than 100 kilograms, and the requirement of a communication operator for first-aid repair and maintenance and convenient carrying is met;
the wind energy 22 is a wind generating set;
the solar energy 23 is a photovoltaic power generation assembly;
the hybrid energy manager 3 comprises a wind energy and solar maximum power point tracking device 31, an AC/DC converter 32 and an automatic switching device 33; the seamless switching of the commercial power 1, the diesel generator set 21, the wind energy 22 and the solar energy 23 is realized by tracking the maximum power point of the wind energy 22 and the solar energy 23, the start and stop of the diesel generator set 21 can be controlled according to the power supply quality of the commercial power and the voltage of the storage battery, and the alternating current voltage provided by the commercial power 1, the wind energy 22 and the diesel generator set 21 can be converted into a first direct current voltage of 300V;
the DC/DC conversion controller 4 is used for converting the first direct-current voltage 300V provided by the hybrid energy manager 3 into a second direct-current voltage 48V to charge the storage battery 5 and control the charging and discharging of the storage battery 5;
the storage battery 5 is a lithium iron phosphate battery pack and is used for storing electric energy with a second direct current voltage of 48V provided by the DC/DC conversion controller 4; compared with the traditional lead-acid storage battery, the lithium ion battery has better temperature adaptability and charging characteristic, and has the advantages of small volume, light weight, high working voltage, large specific energy, long cycle life, no pollution, good safety performance and the like.
When the optimal output power of the wind energy 22 and the solar energy 23 is larger than the actual consumed power of the load 6, the DC/DC conversion controller 4 controls the storage battery 5 to store the redundant electric energy; when the optimal output power of the wind energy 22 and the solar energy 23 is smaller than the actual consumed power of the load 6, the DC/DC conversion controller 4 controls the storage battery 5 to release the stored electric energy to supplement the power difference, and when the release of the electric energy in the storage battery 5 is finished, the hybrid energy manager 3 starts the diesel generator set 21 to charge the storage battery 5 and bring the load 6.
The intelligent oil-electricity hybrid power supply system for the communication base station has four working modes:
the first working mode is a mode of charging the storage battery 5 by wind energy 22 or solar energy 23 or commercial power 1 (alone or in combination), the time is 0-24 hours, at the moment, the diesel generator set 21 is in a stop standby state, the hybrid energy manager 3 performs maximum power tracking on the wind energy 22 and the solar energy 23 to control the wind energy 22 and the solar energy 23 to work alone or in cooperation, free wind energy 22 or solar energy 23 is utilized to the maximum extent, when the energy superposed by the wind energy 22 and the solar energy 23 cannot meet the requirements of the storage battery 5 for charging and loading 6, whether the commercial power 1 is normal is detected firstly, if the commercial power 1 is normal, the commercial power 1 is adopted as a supplementary power supply of the wind energy and the solar energy, if the output of the wind energy 22 or the solar energy 23 is lower than the initial value, the commercial power 1 is switched to the commercial power 1, the storage battery 5 is charged alone and the loading 6 is carried, if, switching to a second operating mode;
the second working mode is a mode that the diesel generator set 21 operates to charge the storage battery 5, and the operation time is 3-4 hours; at this time, the hybrid energy manager 3 performs maximum power tracking on the wind energy 22 and the solar energy 23, if a small amount of energy of the wind energy 22 and the solar energy 23 can be utilized, the diesel generator set 21 is adopted as a supplementary power supply of the wind energy 22 or the solar energy 23, and if the output of the wind energy 22 or the solar energy 23 is lower than the initial value, the variable frequency direct current generator set 21 charges the storage battery 5 independently and carries the load 6. Entering a third operating mode when the storage battery 5 is charged to 85% -100% of the set capacity and runs for the minimum charging time, or although the storage battery 5 is not charged to the preset capacity, the running time of the diesel generator set 21 reaches the set maximum charging running time;
the third working mode is a storage battery discharging mode, and the running time is 12-20 hours; when the diesel generator set 21 runs for a set time (3-4 hours), a shutdown program is started, the diesel generator set is shut down after cooling delay to enter a standby mode, at the moment, the power of the load 6 is provided by discharging of the storage battery 5, the hybrid energy manager 3 performs maximum power tracking on the wind energy 22 and the solar energy 23, and partial or all load energy is dynamically supplemented in real time;
the fourth working mode is a forced diesel generator set 21 timing starting mode; when the wind energy 22 or the solar energy 23 or the commercial power 1 is normal all the time, and the diesel generator set 21 does not have a chance to run at full load for a long time, the hybrid energy manager 3 controls the diesel generator set 21 to be started up forcibly at regular time, at the moment, the output of the wind energy 22, the solar energy 23 and the commercial power 1 is turned off or reduced forcibly, the diesel generator set 21 can run at full load and run for a set minimum charging time, so that the starting performance and the full load carrying capacity of the diesel generator set 21 are tested, carbon deposition in a cylinder is removed through high temperature in the cylinder generated by the full load running, the possible bad phenomena of oil leakage of a smoke exhaust pipe and the like caused by the long-time non-full load running of the diesel generator set 21 are avoided, and the diesel generator set; by periodically testing the full load test operation, the diesel generator set 21 can be ensured to always maintain the best available working condition.
The variable-frequency direct-current generator set in the intelligent oil-electricity hybrid power supply system of the communication base station changes the output power according to the load, so that the low-load working condition which is not energy-saving and environment-friendly is converted into the economic working condition of basic full load, and the oil consumption is greatly reduced. The hybrid energy manager realizes seamless switching of wind energy, solar energy and a diesel generator set, has a maximum power tracking function, and outputs a stable and continuous high-quality power supply to a client. Experiments prove that the hybrid power supply system has high feasibility, can meet the power consumption requirement of a communication base station, and has great significance to the environmental protection career of human beings.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (5)
1. An intelligent oil-electricity hybrid power supply system of a communication base station comprises a commercial power supply, a hybrid energy source manager, a DC/DC conversion controller and a storage battery, and is characterized in that the hybrid energy source comprises a diesel generating set, wind energy and solar energy; the diesel generator is a variable frequency direct current generator set; the commercial power and the hybrid energy are connected with the input end of the hybrid energy manager, the output end of the hybrid energy manager is connected with the input end of the DC/DC conversion controller, the output end of the DC/DC conversion controller is connected with a load, and the storage battery is connected with the output end of the DC/DC conversion controller and the load;
the hybrid energy manager realizes seamless switching of commercial power, a diesel generator set, wind energy and solar energy, can control the start and stop of the diesel generator set according to the power supply quality of the commercial power and the voltage of the storage battery, and can convert alternating-current voltage provided by the commercial power, the diesel generator set and the wind energy into first direct-current voltage;
the DC/DC conversion controller is used for converting the first direct-current voltage provided by the hybrid energy manager into a second direct-current voltage to charge the storage battery and controlling the charging and discharging of the storage battery;
the storage battery is used for storing electric energy of the second direct current voltage provided by the DC/DC conversion controller;
when the optimal output power of the wind energy and the solar energy is larger than the actual consumed power of a load, the DC/DC converter controls the storage battery to store redundant electric energy; when the optimal output power of wind energy and solar energy is smaller than the actual consumed power of a load, the DC/DC conversion controller controls the storage battery to release the stored electric energy to supplement the power difference, and when the release of the electric energy in the storage battery is finished, the hybrid energy manager starts the diesel generator set to charge the storage battery and carry the load.
2. The energy-saving gasoline-electric hybrid power supply system of the communication base station as claimed in claim 1, wherein the hybrid energy manager comprises wind energy, solar maximum power point tracking device, AC/DC converter and automatic switching device.
3. The intelligent oil-electricity hybrid power system of the communication base station of claim 1, wherein the variable frequency DC generator set comprises a variable frequency engine, a permanent magnet synchronous motor and a control module.
4. The intelligent oil-electricity hybrid power system of the communication base station of claim 1, wherein the battery is a lithium iron phosphate battery pack.
5. The intelligent oil-electricity hybrid power supply system of the communication base station according to claim 1, wherein the first direct-current voltage is 300V, and the second direct-current voltage is 48V.
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| CN104682543A (en) * | 2015-03-17 | 2015-06-03 | 四川省辛普森动力设备有限公司 | Hybrid power supply system based on direct-current frequency variable power generator set |
| CN104993580A (en) * | 2015-07-28 | 2015-10-21 | 福州中亘软件有限公司 | Gas-electricity hybrid DC power supply device |
| CN105006886A (en) * | 2015-07-23 | 2015-10-28 | 上海瑞营机械制造有限公司 | Power supply system for movable LED display screen unit |
| CN106100112A (en) * | 2016-08-26 | 2016-11-09 | 上海科泰电源股份有限公司 | A kind of communication base station air-cooled diesel AC machine set control system |
| CN107134843A (en) * | 2017-05-17 | 2017-09-05 | 上海科泰电源股份有限公司 | A kind of energy mix management system for communication base station |
| CN107171434A (en) * | 2017-06-09 | 2017-09-15 | 南京邮电大学 | A kind of electric power system for oil field |
| CN109193672A (en) * | 2018-10-11 | 2019-01-11 | 广西大学 | A kind of optimize cooperates with secondary voltage control method with control bilayer |
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| CN113839460A (en) * | 2021-09-02 | 2021-12-24 | 华为数字能源技术有限公司 | Power supply system, power supply method and power supply device |
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Cited By (13)
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| CN104682543B (en) * | 2015-03-17 | 2019-05-07 | 四川省辛普森动力设备有限公司 | A kind of mixed power supply system based on DC frequency-changing generating set |
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| CN105006886A (en) * | 2015-07-23 | 2015-10-28 | 上海瑞营机械制造有限公司 | Power supply system for movable LED display screen unit |
| CN104993580A (en) * | 2015-07-28 | 2015-10-21 | 福州中亘软件有限公司 | Gas-electricity hybrid DC power supply device |
| CN104993580B (en) * | 2015-07-28 | 2017-03-08 | 福州中亘软件有限公司 | Oil electricity mixed DC electric supply installation |
| CN106100112A (en) * | 2016-08-26 | 2016-11-09 | 上海科泰电源股份有限公司 | A kind of communication base station air-cooled diesel AC machine set control system |
| CN107134843A (en) * | 2017-05-17 | 2017-09-05 | 上海科泰电源股份有限公司 | A kind of energy mix management system for communication base station |
| CN107171434A (en) * | 2017-06-09 | 2017-09-15 | 南京邮电大学 | A kind of electric power system for oil field |
| CN109193672A (en) * | 2018-10-11 | 2019-01-11 | 广西大学 | A kind of optimize cooperates with secondary voltage control method with control bilayer |
| CN109193672B (en) * | 2018-10-11 | 2020-06-23 | 广西大学 | Optimization and control double-layer cooperative two-stage voltage control method |
| CN111130212A (en) * | 2020-02-21 | 2020-05-08 | 中国铁塔股份有限公司 | Standby power control device |
| CN113453088A (en) * | 2021-08-31 | 2021-09-28 | 深圳天邦达科技有限公司 | Emergency combined backup power supply integrated equipment for communication base station |
| CN113839460A (en) * | 2021-09-02 | 2021-12-24 | 华为数字能源技术有限公司 | Power supply system, power supply method and power supply device |
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| CN103312004B (en) | 2015-05-20 |
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