CN104242438A - Power supply system based on modularization UPS - Google Patents
Power supply system based on modularization UPS Download PDFInfo
- Publication number
- CN104242438A CN104242438A CN201410384708.1A CN201410384708A CN104242438A CN 104242438 A CN104242438 A CN 104242438A CN 201410384708 A CN201410384708 A CN 201410384708A CN 104242438 A CN104242438 A CN 104242438A
- Authority
- CN
- China
- Prior art keywords
- module
- ups
- power
- modular
- electrically connected
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A power supply system based on a modularization UPS comprises the modularization UPS, an intelligent power distribution module electrically connected with the modularization UPS, a plurality of lithium iron phosphate battery group systems electrically connected with the modularization UPS and an intelligent monitoring unit electrically connected with the intelligent power distribution module and the modularization UPS. The problems that an existing track traffic power supply system is high in using and maintaining cost and long in fault repairing time, a charging-discharging control strategy is not suitable for the lithium iron phosphate battery group systems, monitoring and managing capacity is low, fault data recording is easy, and system expandability is poor are solved, and the reliability and the practicability of the track traffic power supply system are wholly improved, and maintaining cost is lowered.
Description
Technical field
The present invention relates to a kind of electric power system based on Modular UPS (uninterrupted power supply Uninterruptible Power Supply).
Background technology
UPS electric power system guarantees Rail Transit System basis that is efficient, that run safely and reliably, and UPS electric power system provides high-quality uninterrupted power supply to power consumption equipment in machine room, ensures that power consumption equipment normally works.Existing track traffic U PS electric power system adopts tower ups system substantially, inner each functional module many employings cable or copper bar are connected by screw fastening, replacing maintenance workload is large, and need by inner for UPS isolate with the electric disjunction of input and output after just can keep in repair, therefore use and maintenance cost is high, fault correction time is long.Tower UPS adopts 1+1 or 2+1 parallel redundancy, unit dual bus, (1+1) system dual bus scheme in parallel usually, and due to the impact of circulation, parallel operation quantity is more, and reliability declines on the contrary.In addition, consider System Expansion difficulty, initial installation capacity is large, the many and a large amount of battery pack investments of parallel operation quantity, substantial contribution is caused to precipitate waste, tower ups system generally adopts plumbic acid or nickel-cadmium cell as stand-by power supply, and cell arrangement is many, and floor space is very large, and Heavy Weight, must reinforce building.In a word, tower ups system also exists that use and maintenance cost is high, fault correction time is long, charge and discharge control strategy is not suitable for the problems such as ferric phosphate lithium cell group system, monitoring management ability is weak, fault data recorder is simple, the system expandability is poor.
Summary of the invention
The invention provides a kind of electric power system based on Modular UPS, solve that existing the urban transportation use and maintenance cost is high, fault correction time is long, charge and discharge control strategy is not suitable for the problems such as ferric phosphate lithium cell group system, monitoring management ability is weak, fault data recorder is simple, the system expandability is poor, improve the reliability of the urban transportation, practicality on the whole, and reduce maintenance cost.
In order to achieve the above object, the invention provides a kind of electric power system based on Modular UPS, this electric power system comprises intelligent monitoring unit and is electrically connected some modular power distribution devices of intelligent monitoring unit; Described modular power distribution device comprises Modular UPS, the intelligent power distribution module of electrical connection module UPS and some ferric phosphate lithium cell group systems of electrical connection module UPS.
Further, described Modular UPS comprises bypass module, maintenance bypass module, monitoring module and some UPS power modules, described bypass module, maintenance bypass module, monitoring module and some UPS power modules are electrically connected intelligent power distribution module respectively, the quantity of described UPS power module equals the quantity of ferric phosphate lithium cell group system, each UPS power module correspondence is electrically connected ferric phosphate lithium cell group system, and described monitoring module is electrically connected each ferric phosphate lithium cell group system.
Further, described UPS power module comprises rectifier, is electrically connected the charger of the inverter of rectifier and electric connection inverter, described rectifier and inverter are electrically connected intelligent power distribution module, and described inverter and charger are electrically connected ferric phosphate lithium cell group system.
Further, described ferric phosphate lithium cell group system comprise some series connection cell, some be connected in parallel on cell two ends Battery control module and bus connect the battery set management module of some Battery control module, described battery set management module electrical connection module UPS.
Information is exported to Modular UPS by bus and two-way dry contact by described battery set management module.
Further, described intelligent power distribution module comprises the input Power entry module of electrical connection module UPS and output distribution module, is electrically connected the automatic change-over of input Power entry module, described automatic change-over connects main power source and stand-by power supply, described output distribution model calling load.
Further, described input Power entry module comprises input circuit breaker and the input branch switch of electric connection.
Further, described output distribution module is for exporting branch switch.
The present invention improves reliability, the practicality of the urban transportation on the whole, and reduces maintenance cost.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of a kind of electric power system based on Modular UPS provided by the invention.
Fig. 2 is the circuit block diagram of Modular UPS.
Fig. 3 is the circuit block diagram of UPS power module.
Fig. 4 is the circuit block diagram of ferric phosphate lithium cell group system.
Fig. 5 is the circuit block diagram of intelligent power distribution module.
Embodiment
Following according to Fig. 1 ~ Fig. 5, illustrate preferred embodiment of the present invention.
As shown in Figure 1, the invention provides a kind of electric power system based on Modular UPS, comprise some modular power distribution devices 11 of intelligent monitoring unit 4 and electric connection intelligent monitoring unit 4;
Described modular power distribution device 11 comprises Modular UPS 1, the intelligent power distribution module 3 of electrical connection module UPS1 and some ferric phosphate lithium cell group systems 2 of electrical connection module UPS1.
Described intelligent power distribution module 3 is electrically connected power supply and load respectively.
Described intelligent monitoring unit 4 connects some intelligent power distribution module 3 and some Modular UPSs 1.
As shown in Figure 2, described Modular UPS 1 comprises some UPS power modules 101, bypass module 102, maintenance bypass module 103 and monitoring module 104, described some UPS power modules 101, bypass module 102, maintenance bypass module 103 and monitoring module 104 are electrically connected intelligent power distribution module 3 respectively, described each UPS power module 101 is also corresponding is electrically connected ferric phosphate lithium cell group system 2, and described monitoring module 104 connects each ferric phosphate lithium cell group system 2.
As shown in Figure 3, described UPS power module 101 comprises rectifier 1011, inverter 1012 and charger 1013, described rectifier 1011 and inverter 1012 are electrically connected intelligent power distribution module 3, and described inverter 1012 and charger 1013 are electrically connected ferric phosphate lithium cell group system 2.
UPS power module 101 adopts three level technology, control technology is the digitlization parallel technology of high-speed dsp (digital signal processor), each UPS power module 101 is independent to be controlled, in the normal situation of civil power, main power source or stand-by power supply pass through intelligent power distribution module 3 through rectifier 1011 and inverter 1012 powering load, charged for ferric phosphate lithium cell group system 2 by charger 1013 simultaneously, after losing main power supply, by ferric phosphate lithium cell group system 2 by inverter 1012 powering load, when all UPS power modules 101 simultaneous faults, by bypass module 102 powering load, when all UPS power module 101 simultaneous faultss, bypass module 102 also fault time, enable maintenance bypass module 103 powering load.Monitoring module 104 carries out charge and discharge control and reporting fault according to the instruction received to ferric phosphate lithium cell group system 2.UPS power module 101 has failure wave-recording function; when system jam; can the situation of change of various electric parameters automatically before and after record trouble; by to these electric quantitative analyses, compare; can analyzing and processing accident; judge to protect whether correct operation, improve the safety operation level of electric power system.Functional unit in Modular UPS 1 take module as maintenance unit, and any portion breaks down and can automatically exit, and influential system is not powered, and only need extract online for malfunctioning module, inserts new module, and maintenance time is short, be free from risk.Can arbitrarily remove and install UPS power module 101 when system cloud gray model, the operation of influential system and output, both do not met the random dilatation of post facility, again reduced initial stage acquisition cost.
Described Modular UPS 1, on existing Modular UPS basis, does targeted design according to track traffic practical application, improves system reliability, battery management level and maintainability.System bypass controls have the mutually redundant accessory power supply of two-way to power, main DSP controls and separate hardware controls dual redundant, improve the reliability of bypass, the separately design of core control panel and air channel, prevent dust from entering, UPS power module size 4U, larger than standard module, be conducive to ventilating and heat radiation, UPS power module increases input filter, strengthen Anti-surging, improve bus capacitor voltage, output short circuit protection self diagnosis recovers, avoid false short circuit, enclosure top adds waterproof cover, prevent having water droplet to get off during construction, RS485 interface is adopted to connect intelligent power distribution module, support BMS(battery management system Battery Management System) battery management protocol, battery charge and voltage adjustable, UPS output provides BMS capable AC to input, when a failure occurs it, power model can waveform before and after record trouble and parameters, comprise input voltage, input current, busbar voltage, cell voltage, battery current, inverter voltage, inductive current, output voltage, bypass voltage.
As shown in Figure 4, described ferric phosphate lithium cell group system 2 comprises the cell 203 of some series connection, some Battery control module 202(LECU being connected in parallel on cell 203 two ends) and bus connect the battery set management module 201(BMU of some Battery control module 202), described battery set management module 201 electrical connection module UPS1, exports to Modular UPS 1 by bus and two-way dry contact by information.
Battery set management module 201 is by CAN and multiple Battery control module 202 real time communication, obtain the parameter such as voltage, temperature of cell 203, after battery set management module 201 analytical calculation draws battery pack integrated information, by RS485 bus and dry contact signal reporting to Modular UPS 1, Modular UPS 1 carries out charge and discharge control and reporting fault according to the instruction received to ferric phosphate lithium cell group system.
Electric power system based on Modular UPS adopts ferric phosphate lithium cell group system 2 as the backup battery of Modular UPS 1, overcome and adopt the problems such as lead-acid battery volume is large, equipment is heavy, the life-span is short, the charging interval is long, make it have that high integration, high-intelligentization, volume are little, the feature such as quickly-chargeable, wiring are simple and clear, meet the requirement of UPS to battery to greatest extent.Ferric phosphate lithium cell group system 2 adopts modular construction, for convenience detach and replacing; Adopt the design integrated with UPS, embedded battery set management module 201 and Battery control module 202 pairs of ferric phosphate lithium cell group systems carry out daily measurement, monitoring and maintenance management, two-way dry contact exports as communication backup, one tunnel is used for charging instruction and reports, one tunnel reports for instruction of discharging, to improve system reliability, simultaneously, ferric phosphate lithium cell group system has equalized maintenance interface, is convenient to equalized maintenance.
As shown in Figure 5, described intelligent power distribution module 3 comprises the input Power entry module 301 of electrical connection module UPS1 and output distribution module 302, is electrically connected the automatic change-over 303(ATS of input Power entry module 301), described automatic change-over 303 connects main power source and stand-by power supply, and described output distribution module 302 connects load.
Described input Power entry module 301 comprises input circuit breaker and the input branch switch of electric connection, and described output distribution module 302 is for exporting branch switch.
When main power source is normal, main power source gives input circuit breaker power transmission through automatic change-over 303, be sent to input branch switch again, powered to Modular UPS 1 by input branch switch, Modular UPS 1 becomes pure standard sine wave power supply to the power supply sent into after rectification, inversion, gives each load supplying through exporting branch switch.When main power source is abnormal, be switched to stand-by power supply through automatic change-over 303 to power to Modular UPS 1, it is the same that its operation principle is followed under main power source situation, of short duration power failure is had in main power source and stand-by power supply handoff procedure, at this moment supply electric energy to Modular UPS 1 by ferric phosphate lithium cell group system 2, guarantee the normal power supply guarantee of system.Can be information equipment and closely power supply is provided, shorten line transmission distance, reduce floor space.Through the modularized design of system, Fast Installation and replacing can be realized, significantly improve managed operation efficiency, cut operating costs.The each branch switch of output is controlled, realizes dividing electricity at present.Phase line and the zero line of input and output install lightning arrester additional respectively over the ground, effectively avoid the impact of surge voltage.
Described intelligent monitoring unit 4 realizes based on 32bit ARM Cortex-M3 Series of MCU STM32F205, STM32F205 provides multiple USART interface and 2 UART interface, USART forms RS232 serial ports through TTL-RS232 level transformating chip SP3222EEA respectively, for connecting intelligent power distribution module 3 and Modular UPS 1, 1 road UART connects IPORT module, this IPORT module integration 10/100M self adaptation Ethernet interface, the most high bit rate of serial communication is up to 230.4Kbps, there is TCP Server, TCP Client, the multiple-working modes such as UDP and Real COM driver, support maximum four connections, support domain name access, other 1 road UART UART6 connects M35 GSM/GPRS module, the embedded conventional TCP of this GSM/GPRS module, UDP, FTP, HTTP, SMTP, MUX protocol stack, use GSM 07.07, 07.05 realizes the transparent transmission of data with other AT extended instruction etc., also support point-to-point short message receiving-transmitting, realize initiative alarming.The supply power voltage of intelligent monitoring unit 4 is 3.3 ~ 4.6V, and exemplary voltages is 4.0V, operating temperature range-40 ~+85 DEG C.Based on each equipment in the electric power system of Modular UPS by RS232 bus, signal is pooled to intelligent monitoring unit 4, after intelligent monitoring unit 4 receives the signal data of each equipment, by GPRS interface by data upload to Internet the Internet, administrative staff can monitor the working condition of each equipment in real time by access the Internet.Intelligent monitoring unit 4 realizes monitoring this locality based on subsystem data each in the electric power system of Modular UPS, on off state simultaneously, networking and remote monitoring and management, can facilitate and monitor in real time the running status of electric power system, be convenient to the clear and definite status of equipment of attendant, reduce maintenance cost, increase work efficiency.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. based on an electric power system for Modular UPS, it is characterized in that, this electric power system comprises intelligent monitoring unit (4) and is electrically connected some modular power distribution devices (11) of intelligent monitoring unit (4); Described modular power distribution device (11) comprises Modular UPS (1), electrical connection module UPS(1) intelligent power distribution module (3) and electrical connection module UPS(1) some ferric phosphate lithium cell group systems (2).
2. as claimed in claim 1 based on the electric power system of Modular UPS, it is characterized in that, described Modular UPS (1) comprises bypass module (102), maintenance bypass module (103), monitoring module (104) and some UPS power modules (101), described bypass module (102), maintenance bypass module (103), monitoring module (104) and some UPS power modules (101) are electrically connected intelligent power distribution module (3) respectively, the quantity of described UPS power module (101) equals the quantity of ferric phosphate lithium cell group system (2), each UPS power module (101) correspondence is electrically connected ferric phosphate lithium cell group system (2), described monitoring module (104) is electrically connected each ferric phosphate lithium cell group system (2).
3. as claimed in claim 2 based on the electric power system of Modular UPS, it is characterized in that, described UPS power module (101) comprises rectifier (1011), is electrically connected the charger (1013) of the inverter (1012) of rectifier (1011) and electric connection inverter (1012), described rectifier (1011) and inverter (1012) are electrically connected intelligent power distribution module (3), and described inverter (1012) and charger (1013) are electrically connected ferric phosphate lithium cell group system (2).
4. as claimed in claim 3 based on the electric power system of Modular UPS, it is characterized in that, described ferric phosphate lithium cell group system (2) comprise some series connection cell (203), some be connected in parallel on cell (203) two ends Battery control module (202) and bus connect the battery set management module (201) of some Battery control module (202), described battery set management module (201) electrical connection module UPS(1).
5., as claimed in claim 4 based on the electric power system of Modular UPS, it is characterized in that, information is exported to Modular UPS (1) by bus and two-way dry contact by described battery set management module (201).
6. the electric power system based on Modular UPS as described in claim 4 or 5, it is characterized in that, described intelligent power distribution module (3) comprises electrical connection module UPS(1) input Power entry module (301) and output distribution module (302), be electrically connected input Power entry module (301) automatic change-over (303), described automatic change-over (303) connects main power source and stand-by power supply, and described output distribution module (302) connects load.
7. as claimed in claim 6 based on the electric power system of Modular UPS, it is characterized in that, described input Power entry module (301) comprises input circuit breaker and the input branch switch of electric connection.
8. as claimed in claim 7 based on the electric power system of Modular UPS, it is characterized in that, described output distribution module (302) is for exporting branch switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410384708.1A CN104242438A (en) | 2014-08-07 | 2014-08-07 | Power supply system based on modularization UPS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410384708.1A CN104242438A (en) | 2014-08-07 | 2014-08-07 | Power supply system based on modularization UPS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242438A true CN104242438A (en) | 2014-12-24 |
Family
ID=52230014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410384708.1A Pending CN104242438A (en) | 2014-08-07 | 2014-08-07 | Power supply system based on modularization UPS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104242438A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106227187A (en) * | 2016-07-13 | 2016-12-14 | 佛山科学技术学院 | The method and system that a kind of UPS intelligent monitoring and fault diagnosis are repaired |
| CN106300461A (en) * | 2015-05-20 | 2017-01-04 | 上海航天有线电厂有限公司 | A kind of ups system of intelligent management battery |
| CN107086614A (en) * | 2016-02-15 | 2017-08-22 | 周锡卫 | A kind of N+M redundancy ups systems of the multiple subsystem composition of Centralized Monitoring |
| CN108761354A (en) * | 2018-06-20 | 2018-11-06 | 华电电力科学研究院有限公司 | Utilize power plant or the system and method for substation fault oscillograph detecting uninterrupted power supply bypass changeover time |
| CN109038793A (en) * | 2018-07-11 | 2018-12-18 | 佛山市众盈电子有限公司 | A kind of open-ended modularity uninterruptible power supply |
| CN111547108A (en) * | 2020-04-20 | 2020-08-18 | 佛山科学技术学院 | Rail transit uninterrupted power source intelligent monitoring system |
| CN112825437A (en) * | 2019-11-21 | 2021-05-21 | ***通信集团甘肃有限公司 | Power supply control method and system for integrated cabinet |
| US11462917B1 (en) | 2021-12-10 | 2022-10-04 | NDSL, Inc. | Methods, systems, and devices for maintenance and optimization of battery cabinets |
| US11689048B1 (en) | 2021-12-10 | 2023-06-27 | NDSL, Inc. | Methods, systems, and devices for maintenance and optimization of battery cabinets |
| CN117526544A (en) * | 2024-01-03 | 2024-02-06 | 深圳市英威腾电源有限公司 | Control method and system of UPS module, electronic equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673964A (en) * | 2009-08-31 | 2010-03-17 | 河北实华科技有限公司 | Modular UPS integrated power distribution system |
| CN101814753A (en) * | 2010-03-24 | 2010-08-25 | 艾默生网络能源有限公司 | UPS power supply centralized power supply system |
| CN102270878A (en) * | 2011-07-25 | 2011-12-07 | 国网电力科学研究院武汉南瑞有限责任公司 | Direct current power supply system for transformer substation and control method thereof |
| CN102624075A (en) * | 2012-04-10 | 2012-08-01 | 河北实华科技有限公司 | Multimachine parallel connection method and scheme of modular UPS (uninterrupted power supply) system |
| CN102790422A (en) * | 2012-07-30 | 2012-11-21 | 广东易事特电源股份有限公司 | Uninterrupted power supply (UPS) charging module device and control method thereof |
-
2014
- 2014-08-07 CN CN201410384708.1A patent/CN104242438A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673964A (en) * | 2009-08-31 | 2010-03-17 | 河北实华科技有限公司 | Modular UPS integrated power distribution system |
| CN101814753A (en) * | 2010-03-24 | 2010-08-25 | 艾默生网络能源有限公司 | UPS power supply centralized power supply system |
| CN102270878A (en) * | 2011-07-25 | 2011-12-07 | 国网电力科学研究院武汉南瑞有限责任公司 | Direct current power supply system for transformer substation and control method thereof |
| CN102624075A (en) * | 2012-04-10 | 2012-08-01 | 河北实华科技有限公司 | Multimachine parallel connection method and scheme of modular UPS (uninterrupted power supply) system |
| CN102790422A (en) * | 2012-07-30 | 2012-11-21 | 广东易事特电源股份有限公司 | Uninterrupted power supply (UPS) charging module device and control method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300461A (en) * | 2015-05-20 | 2017-01-04 | 上海航天有线电厂有限公司 | A kind of ups system of intelligent management battery |
| CN107086614A (en) * | 2016-02-15 | 2017-08-22 | 周锡卫 | A kind of N+M redundancy ups systems of the multiple subsystem composition of Centralized Monitoring |
| CN106227187A (en) * | 2016-07-13 | 2016-12-14 | 佛山科学技术学院 | The method and system that a kind of UPS intelligent monitoring and fault diagnosis are repaired |
| CN108761354A (en) * | 2018-06-20 | 2018-11-06 | 华电电力科学研究院有限公司 | Utilize power plant or the system and method for substation fault oscillograph detecting uninterrupted power supply bypass changeover time |
| CN109038793A (en) * | 2018-07-11 | 2018-12-18 | 佛山市众盈电子有限公司 | A kind of open-ended modularity uninterruptible power supply |
| CN112825437A (en) * | 2019-11-21 | 2021-05-21 | ***通信集团甘肃有限公司 | Power supply control method and system for integrated cabinet |
| CN111547108A (en) * | 2020-04-20 | 2020-08-18 | 佛山科学技术学院 | Rail transit uninterrupted power source intelligent monitoring system |
| US11462917B1 (en) | 2021-12-10 | 2022-10-04 | NDSL, Inc. | Methods, systems, and devices for maintenance and optimization of battery cabinets |
| US11689048B1 (en) | 2021-12-10 | 2023-06-27 | NDSL, Inc. | Methods, systems, and devices for maintenance and optimization of battery cabinets |
| CN117526544A (en) * | 2024-01-03 | 2024-02-06 | 深圳市英威腾电源有限公司 | Control method and system of UPS module, electronic equipment and storage medium |
| CN117526544B (en) * | 2024-01-03 | 2024-05-17 | 深圳市英威腾电源有限公司 | Control method and system of UPS module, electronic equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104242438A (en) | Power supply system based on modularization UPS | |
| CN108683202B (en) | Energy storage system | |
| CN103532158B (en) | A kind of micro-grid new energy hybrid energy storage system | |
| CN102118058B (en) | Weak current integrated UPS power system applied to urban mass transit and power supply method | |
| CN103825351A (en) | Intelligent energy storage type emergency power supply system | |
| CN201576956U (en) | Emergency DC power supply vehicle | |
| CN202602134U (en) | Portable DC system load transfer auxiliary tank | |
| WO2020248415A1 (en) | Energy storage power supply system and energy storage power supply box | |
| CN103117595B (en) | Distributed direct current independent power supply system | |
| KR20130098079A (en) | Apparatus and method for controlling power supply at substation | |
| CN203278388U (en) | Power supply construction for subway shield door | |
| CN209709744U (en) | A kind of communication base station power supply system that retired power battery echelon utilizes | |
| CN203119615U (en) | Distributed direct-current independent power supply system | |
| CN204481544U (en) | A kind of wireless charging device for transmission line on-line monitoring equipment | |
| CN203119617U (en) | Distributed direct-current independent power supply system for transformer substation | |
| CN103117596B (en) | Distributed direct-current power supply system for substation | |
| CN208190334U (en) | The urban transportation and Rail Transit System | |
| CN208127979U (en) | A kind of cabinet type power-supply system of lithium electricity UPS integral machine | |
| CN202602311U (en) | Standby power supply system of traffic sign | |
| CN105186675A (en) | Emergency power source system for electric locomotive | |
| CN202333933U (en) | Direct current screen | |
| CN204465138U (en) | A kind of AC/DC integrated power-supply system | |
| CN111129616A (en) | Battery energy storage BMS system based on dual-path information sampling monitoring and protection control | |
| CN202444326U (en) | Monitoring module of integrated intelligent power supply system | |
| CN203491768U (en) | A DC power supply cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |