CN105119363A - HVDC uninterruptible power supply system for intelligent power grid - Google Patents
HVDC uninterruptible power supply system for intelligent power grid Download PDFInfo
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention provides an HVDC uninterruptible power supply system for an intelligent power grid, which comprises an HVDC uninterruptible power supply. The HVDC uninterruptible power supply is respectively connected with an accident lighting module, a host module, an electric energy billing module and a fire monitoring module. A display module is respectively connected with the uninterruptible power supply (UPS) and the host module. The HVDC uninterruptible power supply comprises a first power supply AC1 and a second power supply AC2. The first power supply AC1 is connected with an output end successively via a first rectifier and a positive onset diode D1. The second power supply AC2 is connected with the output end successively via a second rectifier and a positive onset diode D2. The anode of the diode D2 is connected with the positive electrode of a storage battery E1. The negative electrode of the storage battery E1 is grounded. By means of the above system, not only the power supply reliability of the uninterruptible power supply is effectively improved, but also the unstable condition problem of equipment due to the electromagnetic interference can be solved.
Description
Technical field
The present invention relates to uninterruptible power system, particularly relate to a kind of HVDC uninterruptible power system for intelligent grid.
Background technology
At present for after power failure, can cause the power consumption equipment of heavy economic losses, even security incident, for improving the reliability of power supply, the conventional practice is between power consumption equipment and power supply, increases a UPS uninterrupted power supply.In State Grid Corporation of China's project of transmitting and converting electricity or the substation engineering process such as large-scale petroleum, chemical enterprise, for ensureing in transformer station that electric equipment still can reliable and stable operation within a certain period of time when change used is broken down and occurred to have a power failure, in station power supply and station, configure UPS ac uninterrupted power supply between electric equipment.Although the ups power being carried out uniform bidding buying by company is all the best brand of product that domestic well-known producer manufactures, by operation in recent years, happen occasionally because ups power fault causes Substation Electric Equipment to lose de-protected situation.The economic loss caused for minimizing UPS fault of uninterrupted power source and security incident, need to find a power supply more reliable than UPS uninterrupted power supply, and along with the construction of extra-high voltage grid, need for avoiding electromagnetic interference power transformation station equipment to redesign uninterrupted power supply method of supplying power to.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of HVDC uninterruptible power system for intelligent grid.It effectively can not only improve the power supply reliability of uninterrupted power supply, and it can solve the unstable situation that equipment itself produces because of electromagnetic interference.
To achieve these goals, the technical solution adopted in the present invention is:
For a HVDC uninterruptible power system for intelligent grid, comprise HVDC uninterruption power source, emergency lighting module, micro computer monitoring module, electric energy tariffing module and fire detection module; Described micro computer monitoring module comprises host module and display apparatus module; Described HVDC uninterruption power source connects emergency lighting module, host module, electric energy tariffing module and fire monitoring module respectively; Described display apparatus module connects UPS uninterruption power source and host module respectively; HVDC uninterruption power source comprises: the first power supply AC1 and second source AC2, and described first power supply AC1 is connected output by the first rectifier with the diode D1 of forward conduction successively; Described second source AC2 is connected output by the second rectifier with the diode D2 of forward conduction successively; The anode of described diode D2 connects the positive pole of storage battery E1, the minus earth of storage battery E1; UPS uninterruption power source comprises: the first power supply AC1 and second source AC2, described first power supply AC1 connects display apparatus module by K switch 1, described second source AC2 is successively through the 3rd rectifier, inverter, K switch 2 connects display apparatus module, and the described 3rd node between rectifier and inverter is by storage battery E2 ground connection.
Described HVDC uninterruption power source comprises uninterrupted power supply circuit and freewheeling circuit, the circuit structure of described freewheeling circuit is: the output of described uninterrupted power supply circuit is successively by K switch 3, the diode D3 of anti-phase connection, electric capacity C2, K switch 4 ground connection, described diode D3 is connected in parallel resistance R, and the node between described diode D3 and K switch 3 is the positive pole of HVDC uninterruption power source, the minus earth of HVDC uninterruption power source.
Described emergency lighting module comprises the first high-frequency inverter be connected with HVDC uninterruption power source, an output of described first high-frequency inverter connects the 1st pin of electricity-saving lamp by inductance L 1, another output of described first high-frequency inverter connects the 2nd pin of electricity-saving lamp, and the 3rd pin of electricity-saving lamp is connected electric capacity C1 with between the 4th pin.
The circuit structure of described host module comprises: the second high-frequency inverter be connected with HVDC uninterruption power source, and described second high-frequency inverter connects rectifying and wave-filtering pressurizer by transformer, and rectifying and wave-filtering pressurizer connects host module.
Described HVDC uninterruption power source is by DC-DC change-over circuit to electric energy tariffing module and fire hazard monitoring module for power supply, and described DC-DC change-over circuit is the DC-DC change-over circuit of single input and multi-output.
The structure of described DC-DC change-over circuit comprises: the positive pole of described HVDC uninterruption power source passes through switch S successively, inductance L and switch S 0 ground connection, the minus earth of described HVDC uninterruption power source, node between described switch S and inductance L is by the diode D4 ground connection of Opposite direction connection, Nodes between described switch S 0 and inductance L is connected with some branch roads, described route electric capacity and a resistor coupled in parallel are formed by connecting, described branch road connects PWM controller respectively by feedback loop, described PWM controller control switch S, S0, S1 is until the shutoff of Sn and conducting.
Beneficial effect of the present invention is:
1, DC power supply replaces UPS uninterrupted power supply, greatly can improve the reliability of automatic control system electricity consumption, reduce the economic loss because power failure causes and security incident.Meanwhile, DC power supply is simpler than UPS uninterrupted power supply structure, cost is low, easy to maintenance.Therefore, DC power supply replaces UPS uninterrupted power supply, will create great economic benefit to oil, chemical enterprise.
2, DC power supply replaces UPS uninterrupted power supply to be a system engineering, and it relates to the various aspects such as instrument, computer, automatic control system, as missed a link, just likely causes the failure of whole retrofit work.Therefore, single input and multi-output DC-DC conversion circuit is adopted to power to whole system, the safe voltage demand of instrument and meter can be ensure that, simultaneously, due to the structure of voltage changer that adopted single input and multi-output DC-DC conversion circuit easy, facilitate wiring, meet the demand of multiple different voltage simultaneously.
3, adopt single input and multi-output DC-DC conversion circuit, adopt PWM controller to control, introduce feedback loop simultaneously, which ensure that the stability of whole circuit.Ensure that the Supply Security of whole system.
4, there is not the difference of waveform, phase place, frequency in technical solutions according to the invention.Two DC power supply, just can be directly in parallel by after diode-isolated, jointly powers to the load.Like this, whichever power supply (no matter being direct current or alternating current) power failure or fault, another power supply all can automatically, without interruption, relatively independently to electricity consumption load supplying.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention;
Fig. 2 UPS uninterrupted power supply structural representation;
Fig. 3 HVDC uninterruption power source structural representation;
Fig. 4 freewheeling circuit structural representation.
Fig. 5 emergency lighting modular circuit structural representation;
The electrical block diagram of Fig. 6 host module;
Fig. 7 DC-DC change-over circuit.
Embodiment
In order to better understand technical scheme of the present invention, below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1 to Figure 3, a kind of HVDC uninterruptible power system for intelligent grid, comprises HVDC uninterruption power source, emergency lighting module, micro computer monitoring module, electric energy tariffing module and fire detection module; Micro computer monitoring module comprises host module and display apparatus module; HVDC uninterruption power source connects emergency lighting module, host module, electric energy tariffing module and fire monitoring module respectively; Display apparatus module connects UPS uninterruption power source and host module respectively; HVDC uninterruption power source comprises: the first power supply AC1 and second source AC2, and the first power supply AC1 is connected output by the first rectifier with the diode D1 of forward conduction successively; Second source AC2 is connected output by the second rectifier with the diode D2 of forward conduction successively; The anode of diode D2 connects the positive pole of storage battery E1, the minus earth of storage battery E1; UPS uninterruption power source comprises the first power supply AC1 and second source AC2, and the first power supply AC1 connects display apparatus module by K switch 1, and second source AC2 is successively through the 3rd rectifier, and inverter, K switch 2 connects display apparatus module.3rd node between rectifier and inverter is by storage battery E2 ground connection.
UPS uninterrupted power supply, compared with DC power supply, adds inversion link, and the circuit structure of inverter is than more than the complicated several times of rectifier.Meanwhile, the power component-large power triode of inversion is operated on off state, overvoltage when bear the change of current and power loss.Although the reverse proof voltage of inverter power component is than DC power supply power component high several times, the selection of other components and parts is also more strict than DC power supply, and UPS uninterrupted power supply total cost is more than the several times of equivalent capability direct current.But for above-mentioned reasons, the safe and reliable coefficient of UPS uninterrupted power supply is far away from DC power supply.
For UPS uninterrupted power supply structure as shown in Figure 3: when AC1 power interruptions or rectifier damage, can be continued to electricity consumption load supplying by inverter by battery E2; But as occurred that battery, inverter damage, during the phenomenons such as AC1 interruption duration long (exceeding discharge capacity of the cell), ups power will stop powering to the load.There is the difference of the aspects such as waveform, phase place, frequency due to inverter output voltage, make the output of inverter can not be in parallel with other power supply (comprising other inverter).That is: before K1 switch disconnects, K2 switch can not close, otherwise accident will be made to expand further.Now, as the power supply of load will be recovered, must first disconnect K1 switch, then drop into K2 switch, load just can be made to realize the operation of access stand-by power supply.UPS uninterrupted power supply automatically, incessantly from an electrical source exchange to another power supply, UPS uninterrupted power supply is not accomplished " uninterrupted power supply " of real meaning, can not can not meet the requirement of specific loads to power supply high reliability.And DC power supply as shown in Figure 2, there is not the difference of waveform, phase place, frequency in it.Two DC power supply, just can be directly in parallel by after diode-isolated, jointly powers to the load.Like this, whichever power supply (no matter being direct current or alternating current) power failure or fault, another power supply all can automatically, without interruption, relatively independently to electricity consumption load supplying.By electric loading owing to side by side, each other being powered standby by two relatively independent power supplys, use electric loading to obtain " uninterruptedly " power supply of real meaning, thus further increase the reliability of power supply, reduce the economic loss because system dead electricity causes.
Because direct current does not have the zero crossing of electric current, voltage; And supply line also exists inductance, therefore the cutout ability of switch decreases.For the circuit that operating current is larger, the capacity of switch should be increased or increase by one as the afterflow link of figure shown in (5), to meet the needs of switch cutout ability.
As shown in Figure 4, HVDC uninterruption power source comprises uninterrupted power supply circuit and freewheeling circuit, the circuit structure of described freewheeling circuit is: the output of uninterrupted power supply circuit is successively by K switch 3, the diode D3 of anti-phase connection, electric capacity C2, K switch 4 ground connection, diode D3 is connected in parallel resistance R, node between diode D3 and K switch 3 is the minus earth of the positive pole of HVDC uninterruption power source, HVDC uninterruption power source.
As shown in Figure 5, emergency lighting module comprises the first high-frequency inverter be connected with HVDC uninterruption power source, an output of the first high-frequency inverter connects the 1st pin of electricity-saving lamp by inductance L 1, another output connects the 2nd pin of electricity-saving lamp, and the 3rd pin of electricity-saving lamp is connected electric capacity C1 with between the 4th pin.
For resistive lightings such as incandescent lamps, as long as the effective value of direct voltage is identical with alternating voltage, DC power supply just can replace AC power for these loads without any transformation.
For gas discharge lighting lamp tool, as fluorescent lamp, mercury vapor lamp etc., conventional industrial frequency reactor (ballast) is as current limiting element.Because reactor can not limit direct current, therefore, DC power supply can not be connected in these light fixtures and use.But along with the development of electronic technology, people have invented electric ballast and electricity-saving lamp.As shown in Figure 5, it is by 220V alternating current not by Industrial Frequency Transformer to the circuit structure of electric ballast and electricity-saving lamp, and direct rectifying and wave-filtering becomes direct current; Direct current is reverse into the alternating current of high frequency by triode; Alternating current produces a high voltage by LC series resonant circuit in lamp tube ends, makes to discharge between fluorescent tube the two poles of the earth, reaches the object starting fluorescent tube; After fluorescent tube starts, limited the electric current flowing through fluorescent tube by radio-frequency rector.Electric ballast, compared with traditional ballast, has without stroboscopic, noiseless, volume is little, lightweight, energy-conservation and can realize the advantages such as low-voltage startup.Electric ballast or electricity-saving lamp in this way, before rectifying and wave-filtering, add that 220V exchanges or direct voltage, the direct voltage after rectification is substantially identical, and does not affect the effect of high-frequency inversion.Therefore, use the light fixture of electric ballast or electricity-saving lamp, can be connected in 220V DC power supply.Use the gas discharge light fixture of power frequency ballast, only have after changing power frequency ballast into electric ballast, light fixture could be connected in the DC power supply of 220V.
As shown in Figure 6, the electrical block diagram of host module comprises: the second high-frequency inverter be connected with HVDC uninterruption power source, and the second high-frequency inverter connects rectifying and wave-filtering pressurizer by transformer, and rectifying and wave-filtering pressurizer connects host module.
Micro-mainframe computer stabilized voltage power supply used all adopts switching mode voltage stabilizer, its common structure as shown in Figure 6: it be by alternating current not by Industrial Frequency Transformer, be rectified into direct current; Direct current, by inversion, becomes the alternating current of high frequency; The alternating current of high frequency becomes by high frequency transformer isolation, rectifying and voltage-stabilizing the low-voltage dc power supply that microcomputer device uses.It is the object reaching voltage stabilizing by changing the ON time of switch triode or switching frequency.Switching mode voltage stabilizer compares with series regulator, has: volume is little, efficiency is high, no industrial frequency transformer, permission power electric are pressed with the advantages such as larger fluctuation range.The same with electric ballast, master microcomputer power supply can be connected in 220V DC power supply.
Element in computer display, except anti-magnetized coil, field-discharge resistance use AC power, other element all uses the direct current after switching power supply voltage stabilizing.Wherein, the process of demagnetization is: during start, and due to the same room temperature of field-discharge resistance temperature, resistance very little (about 20 Ω), produces powerful alternating current (5-10A) in anti-magnetized coil.On the one hand, field-discharge resistance is generated heat, and resistance progressively increases to 20-100K about Ω to this electric current, and electric current gradually reduces 2-10mA; On the other hand, the alternating current gradually reduced, produces an alternating magnetic field gradually reduced, and eliminates the remanent magnetism in picture tube.As demagnetization loop is connected in DC power supply, picture tube unidirectional magnetiztion can be made and damage.Therefore, to display, we can take two kinds of ways to transform it.First method is: be connected on by display on UPS uninterruption power source, and when the AC power power-off that display is using, stand-by power supply automatically can drop in short-term.Because display is just as an interface of human-computer exchange, its short supply interruption can not cause the loss of data in microcomputer, more can not affect the safe operation of process units.Transform display in this way, advantage is any wiring that can not change in display, when shortcoming is the AC power power-off when display is using, can cause the of short duration dead electricity of display.Second method is: the anti-magnetized coil of display and field-discharge resistance are drawn separately, is connected in 220V DC power supply in other loop of display.When display needs demagnetization, by anti-magnetized coil and the of short duration incoming transport power supply of field-discharge resistance.
HVDC uninterruption power source passes through DC-DC change-over circuit to electric energy tariffing module and fire hazard monitoring module for power supply, as shown in Figure 7, the structure of DC-DC change-over circuit comprises: the positive pole of HVDC uninterruption power source is successively by switch S, inductance L and switch S 0 ground connection, the minus earth of HVDC uninterruption power source, node between switch S and inductance L is by the diode D4 ground connection of Opposite direction connection, Nodes between switch S 0 and inductance L is connected with some branch roads, and route electric capacity and a resistor coupled in parallel are formed by connecting.Branch road connects PWM controller respectively by feedback loop, PWM controller control switch S, and S0, S1 are until the shutoff of Sn and conducting.
DC-DC change-over circuit exports n voltage, and wherein n is positive integer.Meet the power supply requirement of required instrument and meter in electric energy tariffing module and fire hazard monitoring module simultaneously.Have employed the output that single inductance completes multiple voltage, structure is simple, and cost is low simultaneously.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (6)
1. for a HVDC uninterruptible power system for intelligent grid, it is characterized in that, comprise HVDC uninterruption power source, emergency lighting module, micro computer monitoring module, electric energy tariffing module and fire detection module; Described micro computer monitoring module comprises host module and display apparatus module; Described HVDC uninterruption power source connects emergency lighting module, host module, electric energy tariffing module and fire monitoring module respectively; Described display apparatus module connects UPS uninterruption power source and host module respectively; HVDC uninterruption power source comprises: the first power supply AC1 and second source AC2, and described first power supply AC1 is connected output by the first rectifier with the diode D1 of forward conduction successively; Described second source AC2 is connected output by the second rectifier with the diode D2 of forward conduction successively; The anode of described diode D2 connects the positive pole of storage battery E1, the minus earth of storage battery E1; UPS uninterruption power source comprises: the first power supply AC1 and second source AC2, described first power supply AC1 connects display apparatus module by K switch 1, described second source AC2 is successively through the 3rd rectifier, inverter, K switch 2 connects display apparatus module, and the described 3rd node between rectifier and inverter is by storage battery E2 ground connection.
2. a kind of HVDC uninterruptible power system for intelligent grid according to claim 1, it is characterized in that, described HVDC uninterruption power source comprises uninterrupted power supply circuit and freewheeling circuit, the circuit structure of described freewheeling circuit is: the output of described uninterrupted power supply circuit is successively by K switch 3, the diode D3 of anti-phase connection, electric capacity C2, K switch 4 ground connection, described diode D3 is connected in parallel resistance R, node between described diode D3 and K switch 3 is the positive pole of HVDC uninterruption power source, the minus earth of HVDC uninterruption power source.
3. a kind of HVDC uninterruptible power system for intelligent grid according to claim 1 and 2, it is characterized in that, described emergency lighting module comprises the first high-frequency inverter be connected with HVDC uninterruption power source, an output of described first high-frequency inverter connects the 1st pin of electricity-saving lamp by inductance L 1, another output of described first high-frequency inverter connects the 2nd pin of electricity-saving lamp, and the 3rd pin of electricity-saving lamp is connected electric capacity C1 with between the 4th pin.
4. a kind of HVDC uninterruptible power system for intelligent grid according to claim 1 and 2, it is characterized in that, the circuit structure of described host module comprises: the second high-frequency inverter be connected with HVDC uninterruption power source, described second high-frequency inverter connects rectifying and wave-filtering pressurizer by transformer, and rectifying and wave-filtering pressurizer connects host module.
5. a kind of HVDC uninterruptible power system for intelligent grid according to claim 1 and 2, it is characterized in that, described HVDC uninterruption power source is by DC-DC change-over circuit to electric energy tariffing module and fire hazard monitoring module for power supply, and described DC-DC change-over circuit is the DC-DC change-over circuit of single input and multi-output.
6. a kind of HVDC uninterruptible power system for intelligent grid according to claim 5, it is characterized in that, the structure of described DC-DC change-over circuit comprises: the positive pole of described HVDC uninterruption power source passes through switch S successively, inductance L and switch S 0 ground connection, the minus earth of described HVDC uninterruption power source, node between described switch S and inductance L is by the diode D4 ground connection of Opposite direction connection, Nodes between described switch S 0 and inductance L is connected with some branch roads, described route electric capacity and a resistor coupled in parallel are formed by connecting, described branch road connects PWM controller respectively by feedback loop, described PWM controller control switch S, S0, S1 is until the shutoff of Sn and conducting.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492944A (en) * | 2017-09-19 | 2017-12-19 | 天津七二通信广播股份有限公司 | Double copies power supply and storage battery power supply administrative unit and implementation method |
| CN111313537A (en) * | 2020-04-01 | 2020-06-19 | 云南电网有限责任公司楚雄供电局 | UPS (uninterrupted Power supply) replacing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000069675A (en) * | 1998-08-25 | 2000-03-03 | Fuji Electric Co Ltd | Electric power storage power supply system, electric power supply method and electric power feed method |
| CN2919646Y (en) * | 2006-07-04 | 2007-07-04 | 李多山 | AC and DC uninterrupted power supply specially for electric power |
| CN202475004U (en) * | 2012-02-04 | 2012-10-03 | 青岛海汇德电气有限公司 | A cell-management-containing uninterruptible power supply with double DC outputs |
| CN202721495U (en) * | 2012-06-21 | 2013-02-06 | 江苏省电力公司苏州供电公司 | Alternating-current and direct-current integrated uninterruptible power supply |
| CN103840543A (en) * | 2012-11-27 | 2014-06-04 | 中国移动通信集团广西有限公司 | Power supply method and device for UPS backup battery packs |
| CN203982181U (en) * | 2014-08-26 | 2014-12-03 | 国家电网公司 | Transformer station's unattended integral supervisory system |
| CN204928343U (en) * | 2015-09-16 | 2015-12-30 | 国网山东省电力公司经济技术研究院 | A incessant power supply system of HVDC for smart power grids |
-
2015
- 2015-09-16 CN CN201510589203.3A patent/CN105119363B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000069675A (en) * | 1998-08-25 | 2000-03-03 | Fuji Electric Co Ltd | Electric power storage power supply system, electric power supply method and electric power feed method |
| CN2919646Y (en) * | 2006-07-04 | 2007-07-04 | 李多山 | AC and DC uninterrupted power supply specially for electric power |
| CN202475004U (en) * | 2012-02-04 | 2012-10-03 | 青岛海汇德电气有限公司 | A cell-management-containing uninterruptible power supply with double DC outputs |
| CN202721495U (en) * | 2012-06-21 | 2013-02-06 | 江苏省电力公司苏州供电公司 | Alternating-current and direct-current integrated uninterruptible power supply |
| CN103840543A (en) * | 2012-11-27 | 2014-06-04 | 中国移动通信集团广西有限公司 | Power supply method and device for UPS backup battery packs |
| CN203982181U (en) * | 2014-08-26 | 2014-12-03 | 国家电网公司 | Transformer station's unattended integral supervisory system |
| CN204928343U (en) * | 2015-09-16 | 2015-12-30 | 国网山东省电力公司经济技术研究院 | A incessant power supply system of HVDC for smart power grids |
Non-Patent Citations (1)
| Title |
|---|
| 谢凤华等: "高压直流UPS的优势与面临的瓶颈", 《电源世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492944A (en) * | 2017-09-19 | 2017-12-19 | 天津七二通信广播股份有限公司 | Double copies power supply and storage battery power supply administrative unit and implementation method |
| CN111313537A (en) * | 2020-04-01 | 2020-06-19 | 云南电网有限责任公司楚雄供电局 | UPS (uninterrupted Power supply) replacing device |
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| CN105119363B (en) | 2017-10-31 |
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