WO2010111828A1 - Système et procédé d'alimentation électrique - Google Patents

Système et procédé d'alimentation électrique Download PDF

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Publication number
WO2010111828A1
WO2010111828A1 PCT/CN2009/071092 CN2009071092W WO2010111828A1 WO 2010111828 A1 WO2010111828 A1 WO 2010111828A1 CN 2009071092 W CN2009071092 W CN 2009071092W WO 2010111828 A1 WO2010111828 A1 WO 2010111828A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
supply unit
battery pack
unit
power
Prior art date
Application number
PCT/CN2009/071092
Other languages
English (en)
Chinese (zh)
Inventor
肖安洲
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2009/071092 priority Critical patent/WO2010111828A1/fr
Priority to CN200980155905.3A priority patent/CN102318165B/zh
Publication of WO2010111828A1 publication Critical patent/WO2010111828A1/fr

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Classifications

    • 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
    • H02J9/061—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 for DC powered loads

Definitions

  • the present invention relates to the field of power management technologies, and in particular, to a power supply system and method. Background technique
  • FIG. 1 is a schematic diagram showing the connection between components in a communication power supply scheme in the prior art
  • FIG. 2 is a schematic diagram of FIG.
  • the existing communication power supply scheme is based on the power supply mode of the ACPB (AC Power Bus).
  • ACPB AC Power Bus
  • various AC power sources are collected, such as a commercial power supply, a backup generator set, and a mobile emergency generator set that is connected through the emergency terminal P3 in order to prevent the above two power sources from malfunctioning.
  • the automatic transfer switch ATS issues an instruction to start the standby genset.
  • the automatic transfer switch switches the contact from the mains to the standby generator.
  • the standby generator set is supplied with power to the rectifier module screen Reel via an automatic transfer switch, a manual transfer switch MTS, and an AC power bus ACPB.
  • the rectifier control unit RCU receives the battery pack Ba t t charge, discharge sample Sb and voltage signal, the rectifier module screen forms a current/voltage closed loop control, charges the battery pack Ba t t , and supplies power to the load Load.
  • the automatic transfer switch ATS issues a shutdown command to the standby generator set.
  • the automatic transfer switch ATS turns the contacts back to the mains.
  • the mains also supplies power to the load according to the above path.
  • the standby generator set automatically stops after the cold machine and enters the ready-to-run state.
  • the contact of the manual transfer switch is switched from left to right and connected to the emergency terminal P3 in the no-power state, moving the emergency generator set EGS After the P3, the manual transfer switch MTS and the AC power bus ACPB supply power to the rectifier module screen Reel, the rectification module screen Reel charges the battery pack and supplies power to the load.
  • the load of the AC power bus ACPB is a rectification module screen Recl.
  • Embodiments of the present invention provide a power supply system and method to increase reliability when power is supplied to a load.
  • a power supply system includes: a power management control unit, a main power supply unit, a backup power supply unit, and a battery unit;
  • the main power supply unit and the output end of the backup power supply unit are respectively connected to the DC power bus, and the control input terminals of the main power supply unit and the backup power supply unit are respectively connected to the power management control Unit electrical connection;
  • the battery unit is connected to the DC power bus
  • the power management control unit is configured to control, by the at least one of the main power supply unit, the backup power supply unit, and the battery unit, to output a direct current of the DC current to the load through the DC power bus.
  • a power supply method includes:
  • the power management control unit controls at least one of the main power supply unit, the backup power supply unit, and the battery unit to transmit the DC current outputted thereto to the load via the DC power bus.
  • the technical solution of the embodiment of the present invention transmits the DC current outputted by the main power supply unit, the backup power supply unit or the battery unit to the load through the DC power bus to the load. Power is supplied. Due to the main power supply unit or standby The output of the power supply unit is DC, so there is no phase problem between the power supplies, so there is no need to use the automatic transfer switch ATS, which increases the reliability when powering the load.
  • FIG. 1 is a schematic diagram of connection between components in a communication power supply scheme in the prior art
  • FIG. 2 is a schematic diagram of a communication power supply scheme shown in FIG.
  • FIG. 3 is a schematic diagram of a power supply system according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a power supply system according to an embodiment of the present invention.
  • Figure 5 is a flow chart of the power management control unit controlling the backup power supply unit to supply power to the battery pack;
  • Figure 6 is a flow chart of the charging process of the special automatic voltage regulator to adjust the standby power supply unit during the process of supplying power from the backup power supply unit to the battery pack.
  • FIG. 3 shows a power supply system according to an embodiment of the present invention, comprising the following components: a power management control unit 301, a main power supply unit 302, a backup power supply unit 303, and a battery unit 305.
  • the output terminals of the main power supply unit 302 and the backup power supply unit 303 are respectively connected to the DC power bus 304, and the control input terminals of the main power supply unit 302 and the backup power supply unit 303 are respectively associated with the power management control unit. Electrical connection.
  • the battery unit 305 is connected to The DC power bus 304 is on the power supply.
  • the power management control unit 301 is configured to control at least one of the main power supply unit 302, the backup power supply unit 303, and the battery unit 305 to transmit the DC current outputted to the load through the DC power bus 304. .
  • the main power supply unit 302 includes: a mains module 3021, a rectification module screen 3022, and an isolation diode 3023.
  • the control input of the mains module 3021 is connected to the power management control unit. 301.
  • the output end of the mains module 3021 is connected to the DC power bus 304 through the rectifier module screen 3012 and the isolation diode 3023.
  • the alternating current outputted by the mains module 3021 is converted into a direct current through the rectifying module screen 3022, and then outputted to the DC power bus 304 via the isolating diode 3023 to the load. powered by.
  • the backup power supply unit 303 includes: an engine 3031, a control input of the engine 3031 is coupled to the power management control unit 301, and the engine 3031 drives a generator 3032.
  • the generator 3032 is coupled to the DC power bus 304 via a rectifier module 3033 and a DC contactor 3034.
  • each unit and module connected to the power management control unit 301 may include more than one input terminal for inputting current, a control signal, etc., wherein one end connected to the power management control unit 301 is Control input.
  • the rectifier module 3033 may be a three-phase full-wave rectifier bridge (module), a single-phase rectifier module, or a half-wave rectifier module.
  • a three-phase full-wave rectifier bridge (module) will be described as an example to ensure three-phase load balancing of the generator 3032.
  • the generator 3032 is further connected with an exciter 3035, and the other end of the exciter 3035 is connected with a voltage regulator 3036. And the exciter 3035 is used to supply power to the voltage regulator 3036.
  • the voltage regulator 3036 can be directly coupled to the generator 3032, and the generator 3032 provides power to the voltage regulator 3036 (not shown).
  • the exciter 3035 can In the case of a permanent magnet auxiliary exciter or other auxiliary exciter, the voltage regulator 3036 can be a special automatic voltage regulator (SAVR).
  • SAVR automatic voltage regulator
  • a three-phase full-wave rectifier bridge (module), an exciter, a permanent magnet auxiliary exciter (PMG), and a voltage regulator, a special automatic voltage regulator, are described as an example.
  • the battery unit 305 includes a battery pack 3051 and a charge and discharge module 3052.
  • One end of the battery pack 3051 is connected to the DC power bus 304 via the charge and discharge module 3052.
  • the load in the embodiment of the present invention may be a communication device load 3053, and the communication device load 3053 is connected to the DC power bus 304.
  • the communication device load 3053 may include, for example, a communication device, a DC auxiliary accessory device, and the like.
  • the power management control unit 301 there is a signal connection control relationship between the power management control unit 301, the main power supply unit 302, the backup power supply unit 303, the emergency power supply unit 306, and the battery unit 305 (the dotted line is shown in the figure).
  • the power management control The unit 301 can detect a change in state of the battery unit 305 by means of signal detection.
  • the power management control unit 301 detects that the main power supply unit 302 is not working properly, and after the battery group 3051 discharge parameter reaches the set value, the power management control unit (PM) 301 sends the backup power supply unit to the standby power supply unit. 303 issues a start command, and the backup power supply unit 303 supplies power to the battery pack 3051 and the communication device load 3053.
  • the power management control unit 301 may also detect that the main power supply unit 302 is not working properly and exits the work, and when the battery pack After the 3051 discharge parameter reaches the set value, a start command is issued.
  • the discharge parameter may include: a voltage of the battery pack, a discharge capacity of the battery pack, and a charging time interval of the battery pack.
  • the power management control unit 301 to the The condition that the standby power supply issues the start command is one or any combination of the following conditions: the voltage of the battery pack is lower than the set value of the discharge voltage but not lower than the voltage limit value; the discharge capacity of the battery pack is greater than the discharge power setting The charging time interval of the battery pack is greater than the charging time interval setting value.
  • the power management control unit (PM) 301 monitors whether the mains module 3021 can work normally. If the mains module 3021 can work normally or the charging parameters of the battery pack 3051 meet the requirements, the power management control The unit (PM) 301 issues a shutdown command to the backup power supply unit 303, disconnects the DC contactor 3034, and stops powering the battery unit 305 and the communication device load 3053. The backup power supply unit 303 is cold and then shuts down to enter the ready-to-run state.
  • the charging parameter of the battery pack includes: a voltage of the battery pack, a charging power of the battery group, and a charging time of the battery pack.
  • the condition that the power management control unit 301 issues a stop command to the backup power supply unit is one or any combination of the following conditions: the voltage of the battery pack reaches a charging voltage setting value; and the charging power of the battery pack reaches charging The power setting value; the charging time of the battery pack reaches the charging time setting value and the discharging amount is reduced.
  • the main power supply unit supplies power to the load.
  • the main power supply unit fails to work normally, if the battery pack can supply power to the load, the battery pack performs powered by. If the main power supply unit or the battery pack cannot supply power to the load, start the backup power supply to charge the battery pack and supply power to the load. In this process, if the main power supply unit returns to normal operation or the battery pack can supply power to the load, the main power supply unit resumes normal operation or the battery pack supplies power to the load.
  • the permanent magnet auxiliary exciter supplies power to the special automatic voltage regulator during the supply of the backup power supply unit 303 to the battery pack 3051.
  • the special automatic voltage regulator detects a DC voltage output by the generator 3032 and a charging current of the battery pack 3051.
  • the DC contactor 3034 is closed when the battery pack 305 is unable to supply power to the load. After the DC contactor 3034 is closed, the special automatic voltage regulator regulates the power generation
  • the output voltage of the machine 3032 is such that the backup power supply performs a charging process to the battery pack 3051; when the voltage of the battery pack 3051 reaches a first set value, the special automatic voltage regulator regulates the power generation
  • the output voltage of the machine 3032 causes the backup power supply to perform a float charging process to the battery pack 3051.
  • the DC current outputted by the main power supply unit or the backup power supply unit or the battery unit is transmitted to the load via the DC power bus, so that there is no phase problem between the power sources. Therefore, there is no need to use the automatic transfer switch ATS, which increases the reliability when powering the load.
  • the generator 3032 is powered in a direct current manner to the battery pack 3051, thereby ensuring the generator Three-phase load balancing.
  • the load of the generator 3032 is a linear three-phase full-wave rectifier bridge (module), and no longer is a non-linear rectifier module screen (high-frequency switching rectifier), when the unit is selected, It is no longer necessary to amplify the capacity to avoid mechanical shock of the system caused by the non-linear load, so there is no problem of low load operation of the unit.
  • the speed of the engine 3031 may not correspond to the standard frequency (such as 50/60HZ), that is, it may not be the synchronous speed (such as 1500/1800rpm or 3000/3600rpm, etc.), so the engine 3031 can be set. At the lowest fuel consumption speed, energy is saved.
  • the standard frequency such as 50/60HZ
  • the synchronous speed such as 1500/1800rpm or 3000/3600rpm, etc.
  • the system according to the first embodiment of the present invention may further include: an emergency power supply unit 306, wherein an output end of the emergency power supply unit 306 is connected to the On the DC power bus 304, the input is connected to a mobile DC generator set or as an alternative energy source.
  • an emergency power supply unit 306 When the power management control module detects that the main power supply unit 302, the backup power supply unit 303, and the battery unit 305 are not working properly, the emergency power supply unit 306 supplies power to the communication device load 3053.
  • the emergency power supply unit 306 can include: an emergency terminal 3061, the input end of the emergency terminal 3061 is connected to a mobile emergency DC generator set or an access port as an alternative energy source, and the output end is connected to the DC through an isolation diode 3062. Power bus.
  • the second embodiment of the present invention further provides a power supply method, including: the power management control unit controls at least one of the main power supply unit, the backup power supply unit, and the battery unit to transmit the DC current outputted by the DC power through the DC power bus. Give the load.
  • the main power supply unit includes: a mains module, a rectifier module screen, and an isolation diode.
  • Controlling the main power supply unit to supply power to the load includes: controlling an alternating current output by the mains module to become a direct current through the screen of the rectifier module, and outputting the output current to the DC power bus via an isolation diode to Load power supply.
  • the battery unit includes: a battery pack and a charge and discharge sample module.
  • the backup power supply unit may include: an engine, a generator, a rectifier module, a DC contactor, an exciter, and a voltage regulator.
  • the voltage regulator detects a DC voltage output by the generator and a charging current of the battery unit in a process of controlling the backup power supply unit to transmit its output DC current through the DC power bus to the load. After the DC contactor is closed, the voltage regulator adjusts an output voltage of the generator, so that the backup power supply unit performs a charging process to the battery unit; when the voltage of the battery unit reaches the first When the value is set, the voltage regulator adjusts an output voltage of the generator, so that the backup power supply unit performs a float charging process to the battery unit.
  • Step 51 When the main power supply unit fails to work normally and exits the work, the power management control unit detects whether the battery pack needs to be charged.
  • the power management control unit may detect whether the voltage of the battery pack is lower than the discharge voltage U1. When the voltage of the battery pack is lower than the discharge voltage U1 and lower than the voltage limit value U2, an alarm is issued. Then, when the voltage of the battery pack is greater than the discharge voltage U1, it can be detected whether the discharge capacity of the battery pack is greater than the discharge power set value Q1. If it is less than, the charge can be detected again. Whether the time interval is greater than the set charging interval setting value Tl.
  • this step it is also possible to detect whether the mains supply has returned to normal at any time. If the mains returns to normal operation, the mains supply power to the load. Otherwise, go to step 52.
  • Step 52 The power management control unit sends a starter unit signal to the standby power supply unit, and the DC contactor performs a closing operation.
  • the DC contactor When the DC contactor is detected that the closing operation has not been performed within a predetermined time, for example, within 5 minutes, an alarm is issued. Otherwise, after the DC contactor successfully performs the closing operation, it may sequentially detect whether the charging amount of the battery pack reaches the set charging power setting value Q2, and whether the voltage of the battery group reaches the maximum charging voltage setting value. U3, or whether the mains is normal.
  • the charging time reaches the charging time set value T2
  • the discharge amount of the battery pack is not reduced (that is, there is no charging), and an alarm is issued. Otherwise, any one of the above conditions or a combination thereof is satisfied, and a unit shutdown signal is issued to the standby power supply unit.
  • the values of Q2, U3, and T2 can be set differently depending on the requirements of the battery pack.
  • Step 53 The DC contactor of the standby power supply unit performs operations such as opening, cooling, and the like.
  • the DC contactor performs the opening for more than the set time value, for example, 5 minutes, an alarm process can be performed.
  • There is no phase problem between the power sources which avoids the defect that the automatic power transfer switch ATS and the manual transfer switch MTS cannot supply power to the load due to the failure of the automatic transfer switch when the automatic power supply scheme is added. Therefore, with the technical solution of the embodiment of the present invention, the reliability when powering the communication power source is increased.
  • the load can be powered by the emergency power supply unit to ensure that the load is working properly.
  • the special automatic voltage regulator of the standby power supply unit detects the DC voltage output by the generator and the battery pack recharging current.
  • the special automatic voltage regulator forms a current closed loop control by charging and discharging the sample module, continuously adjusting the excitation current of the excitation machine magnetic field supplied to the generator, and changing the output voltage of the generator.
  • the backup power supply is caused to charge the battery pack at a set current value. As the charging process progresses, the voltage of the battery pack continuously increases.
  • the special automatic voltage regulator is switched from the current closed loop control to the voltage closed loop control, and the The output voltage of the generator is such that the backup power supply is floated to the battery pack with a voltage of a second set value, wherein the second set value is smaller than the first set value, and the two can be arbitrarily set.
  • the special automatic voltage regulator adjusts according to the set current value I I to uniformly charge the battery pack. If the DC contactor does not perform a closing operation, the special automatic voltage regulator adjusts the magnetic field excitation current of the exciter of the generator according to the set voltage U11. When the voltage of the battery pack reaches the set voltage U21, the special automatic voltage regulator adjusts according to the set voltage U31 to perform a floating charging process on the battery pack. When it is detected that the DC contactor performs the opening operation, it returns to the initial state, otherwise, the process of floating charging is performed.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory, a ROM or a random storage memory, a RAM, a RAM, or the like.
  • the technical solution of the embodiment of the present invention is that the DC current outputted by the main power supply unit or the backup power supply unit or the battery unit is transmitted to the negative output through the DC power bus to the DC output. There is no phase problem between them, so there is no need to use an automatic transfer switch
  • ATS increases the reliability of powering the load. Moreover, in this embodiment, the manner in which the DC unit and the battery pack are alternately supplied with power to the load reduces the number of starts of the unit and shortens the running time thereof, especially the low load running time, thereby achieving the effect of energy saving.
  • system and method described in the embodiments of the present invention can be applied to other systems, such as a UPS system in the field of industrial control, in addition to being used in a communication power supply system.
  • the spare capacity of the standby generator set is relatively large, generally not less than twice the actual load. If the technical solution of the embodiment of the present invention is used, when the main power supply unit fails to work normally, the standby power supply DC generator set directly charges the battery pack of the UPS, and the capacity of the standby power supply DC generator set can be at least doubled. Make investment less. As the load factor of the unit increases, the problem of low load operation of the original unit is solved, so that the engine will work within a better fuel consumption range and in a good working condition, so that the fuel consumption will be greatly reduced, and the engine failure rate will be reduced. , the oil and oil filter replacement cycle is lengthened, saving operating and maintenance costs.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

L'invention porte sur un système et un procédé d'alimentation électrique. Le système comprend une unité de commande de gestion d'énergie (301), une unité d'alimentation électrique principale (302), une unité d'alimentation électrique de secours (303) et une unité de batterie (305). Les sorties de l'unité d'alimentation électrique principale (302), de l'unité d'alimentation électrique de secours (303) et de l'unité de batterie (305) sont connectées à un bus d'alimentation en courant continu (CC) (304) respectivement. L'unité de commande de gestion d'énergie (301) commande au moins une de l'unité d'alimentation électrique principale (302), de l'unité d'alimentation électrique de secours (303) et de l'unité de batterie (305) pour fournir de l'énergie CC au bus d'alimentation CC (304) de façon à alimenter électriquement une charge (3053).
PCT/CN2009/071092 2009-03-31 2009-03-31 Système et procédé d'alimentation électrique WO2010111828A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2009/071092 WO2010111828A1 (fr) 2009-03-31 2009-03-31 Système et procédé d'alimentation électrique
CN200980155905.3A CN102318165B (zh) 2009-03-31 2009-03-31 一种电源供电系统及方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/071092 WO2010111828A1 (fr) 2009-03-31 2009-03-31 Système et procédé d'alimentation électrique

Publications (1)

Publication Number Publication Date
WO2010111828A1 true WO2010111828A1 (fr) 2010-10-07

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CN (1) CN102318165B (fr)
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CN105098964A (zh) * 2014-05-09 2015-11-25 Asco电力技术公司 一种双电源自动切换开关
CN106972621A (zh) * 2017-05-23 2017-07-21 北京世纪瑞尔软件有限公司 一种无人值守站的直流电源系统
CN110467092A (zh) * 2019-07-24 2019-11-19 厦门劦通科技有限公司 电梯停电应急平层装置及其供电方法
CN112134338A (zh) * 2019-06-24 2020-12-25 重庆宗申通用动力机械有限公司 直流发电机组自动启停控制系统
CN112177786A (zh) * 2020-08-19 2021-01-05 潍柴动力股份有限公司 大缸径发动机组系统及控制方法

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CN103491613A (zh) * 2013-09-10 2014-01-01 中兴通讯股份有限公司 一种基站bbu的节电控制方法及装置
WO2016034086A1 (fr) 2014-09-01 2016-03-10 力博特公司 Système et procédé d'alimentation électrique
CN110932333A (zh) * 2014-09-28 2020-03-27 维谛技术有限公司 一种配电系统

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US20040155527A1 (en) * 2003-02-10 2004-08-12 Bryde Jan Henrik Distributed power generation, conversion, and storage system
CN101291078A (zh) * 2008-06-10 2008-10-22 福建弘旺电子科技有限公司 在线式具有ups功能的数码发电机系统

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105098964A (zh) * 2014-05-09 2015-11-25 Asco电力技术公司 一种双电源自动切换开关
CN106972621A (zh) * 2017-05-23 2017-07-21 北京世纪瑞尔软件有限公司 一种无人值守站的直流电源系统
CN112134338A (zh) * 2019-06-24 2020-12-25 重庆宗申通用动力机械有限公司 直流发电机组自动启停控制系统
CN110467092A (zh) * 2019-07-24 2019-11-19 厦门劦通科技有限公司 电梯停电应急平层装置及其供电方法
CN110467092B (zh) * 2019-07-24 2023-07-18 厦门劦通科技有限公司 电梯停电应急平层装置及其供电方法
CN112177786A (zh) * 2020-08-19 2021-01-05 潍柴动力股份有限公司 大缸径发动机组系统及控制方法
CN112177786B (zh) * 2020-08-19 2022-11-29 潍柴动力股份有限公司 大缸径发动机组系统及控制方法

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CN102318165B (zh) 2014-04-02
CN102318165A (zh) 2012-01-11

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