CN102208830B - Hybrid uninterruptible power supply system - Google Patents
Hybrid uninterruptible power supply system Download PDFInfo
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- CN102208830B CN102208830B CN201110069283.1A CN201110069283A CN102208830B CN 102208830 B CN102208830 B CN 102208830B CN 201110069283 A CN201110069283 A CN 201110069283A CN 102208830 B CN102208830 B CN 102208830B
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Abstract
The invention discloses a hybrid uninterruptible power supply system. A generator is connected with a rapid power dump device. A diesel engine is connected with the generator by a clutch. A battery is connected with a bidirectional transducer which is connected with an electric/generator device. The rapid power dump device is connected in series into a path formed by an input power supply and post load equipment. When the input power supply fails or is interrupted, the path formed by the input power supply and the post load equipment is rapidly interrupted. When the input power supply is normal, the input power supply charges the battery by the generator, the electric/generator device and the bidirectional transducer. When the input power supply fails, the battery is discharged, and provides energy for the post load equipment by the bidirectional transducer, the electric/generator device and the generator, and simultaneously, the starting of the diesel engine is finished. After the diesel engine is normally started, the battery stops supplying power, and the diesel engine drives the generator to supply the power to the post load equipment. The hybrid uninterruptible power supply system provided by the invention supplies timely and reliable uninterruptible power to the post load equipment.
Description
Technical field
The present invention relates to uninterruptible power system, particularly one mixing uninterruptible power system.
Background technology
Along with the development of science and technology, mainframe computer, the application of data center and medicine equipment etc. is more and more wider, and the increase of various nonlinear load, more and more higher to the requirement of grid supply quality simultaneously.More and more uninterrupted power supply is needed to power to the electric installation of power supply quality sensitivity, prevent from causing immeasurable loss owing to having a power failure, as large-scale data center, the data processing centre of bankwire, the base station of telecom communication system, satellite controls inspection center, and any one power failure in short-term of medicine equipment that hospital surgical carries out middle use all can cause loss difficult to the appraisal or the threat to life security to user, equipment and patient.Therefore, be vital concerning the reliability of power-supply system, this is also the requirement to UPS reliability.
The conventional uninterruptible power system as stand-by power supply comprises static UPS (Uninterruptible Power Supply, uninterruptible power system) and rotates UPS.Static UPS has off-line type, online, Line interaction Three models.As shown in Figure 1, the structural representation of existing conventional static on line type UPS, adopts power electronic technology that electric network source is converted to the high-performance of load needs, the power supply of high reliability by rectifier and inverter.Battery pack for load provides short-time energy, meanwhile completes the handoff procedure from main road to bypass when rectifier fault.Static UPS has the advantage of its uniqueness, and as efficiency with reliability is high, the distortion of out-put supply is little, but also have the place of its deficiency, the impedance as exported is large, to the bad adaptability of nonlinear load, and high in cost of production.As shown in Figure 2, the structural representation of existing conventional rotation UPS, when input power is normal, alternating current machine and generator provide power supply for load, when input power is interrupted, battery drives direct current machine by converter, direct current machine and generator coaxle, drive electrical generators continues as load and provides energy.Within the time that battery provides energy, input power completes the handoff procedure to bypass.Direct current machine is as the critical piece providing power supply for load, and its advantage is that technology maturation reliability is high, output impedance is little, but due to critical piece be mechanical structure so maintenance expense is high, to instantaneous frequency response speed slow.
Due to existing static on line type UPS and the equal Shortcomings of rotation UPS, how to avoid the deficiency of above-mentioned two kinds of systems, can utilize again the advantage of above-mentioned two kinds of systems, namely output impedance is little, and out-put supply distortion is little, reliability is high, transient error ability is strong and dynamic frequency response is fast, does not limit power grade, and can realize provides in time uninterrupted power supply reliably to successive load, ensureing the safe operation of successive load equipment, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of this invention is to provide a kind of mixing uninterruptible power system, for successive load equipment provides in time uninterrupted power supply reliably, ensure the safe operation of successive load equipment.
For solving the problem, the invention provides a kind of mixing uninterruptible power system, described system comprises: power cut-off device, generator, diesel engine, dynamoelectric machine device, reversible transducer and battery fast;
Described generator, is connected with described quick power cut-off device;
Described diesel engine, is connected with described generator by clutch;
Described battery, is connected with described reversible transducer, and reversible transducer is connected with described dynamoelectric machine device;
Described generator is coaxial with described dynamoelectric machine device;
Described quick power cut-off device, is connected in the path of input power and successive load equipment; When input power break down or power interruptions time disconnect the path of input power and successive load equipment fast; When input power is normal, input power is charged to described battery by described generator and described dynamoelectric machine device and described reversible transducer; When input power fault, described battery discharge, provides energy by described reversible transducer, dynamoelectric machine device and generator to described successive load equipment;
While described battery discharge provides energy to described successive load equipment, described diesel engine completes start-up course, and described diesel engine normally starts rear described battery and stops power supply, and described diesel engine drives described generator to provide power supply to described rear class equipment.
Preferably, described input power is the power supply that medium voltage network provides after station service transformer.
Preferably, described successive load equipment is middle pressure input power allocation units, server and POL.
Preferably, described system comprises the detecting unit be arranged between described quick power cut-off device and described input power, and described detecting unit is for the voltage signal of described quick power cut-off device front end of sampling and/or current signal;
Described system comprises the controller be connected with described detecting unit, the voltage signal of the input power that described controller is sampled according to described detecting unit and/or current signal, judge described input power break down or power interruptions time, disconnect fast the path of input power and successive load equipment.
Preferably, described system also comprises the generator, the dynamoelectric machine rotation speed detection unit that are connected with described generator, dynamoelectric machine, the signal that described generator, dynamoelectric machine rotation speed detection unit detect delivers to described controller, is controlled the running status of described generator, dynamoelectric machine by described controller.
Preferably, described system also comprises the reversible transducer electric current, the voltage signal detecting unit that are connected with described reversible transducer, the signal that described reversible transducer electric current, voltage signal detecting unit detect delivers to described controller, described controller controls the operating state of described reversible transducer, to the charging of rear class battery when described reversible transducer is operated in rectification mode, when described reversible transducer is operated in inverter mode, battery discharges.
Preferably, described system also comprises the cell voltage, temperature, the electric power detection unit that are connected with described battery, and the signal of described cell voltage, temperature, electric power detection unit inspection delivers to described controller, battery operated in the working range of safety for controlling.
Preferably, the output of described system is provided with filter.
Preferably, described filter is the filter be made up of inductance and electric capacity.
Preferably, the output of described system is provided with frequency correcting apparatus, by detecting the phase place of described system output signal, compare with reference signal, the frequency controlling described frequency correcting apparatus output signal according to comparative result meets the needs of described successive load equipment.
Preferably, described system comprises the under-voltage and over-pressure safety device of the line voltage be connected with described input power further.
Compared with above-mentioned prior art, mix described in the embodiment of the present invention uninterruptible power system by rotating electromagnetic power apparatus such as static reversible transducer, battery and motors with the use of providing in time uninterrupted power supply reliably to successive load equipment, ensure the safe operation of successive load equipment.
Mix uninterruptible power system tool described in the embodiment of the present invention to have the following advantages: owing to applying reversible transducer, do not need independent battery charger and discharge loop; Reversible transducer is power electronic equipment, fast response time, so can at once for rear class equipment provides energy at the initial time of input power fault, because the energy density of battery is low, the energy stored only can maintain the running time that rear class equipment several milliseconds arrives a few second, so described diesel engine completes start-up course while described battery discharge provides energy to described successive load equipment, described diesel engine normally starts rear described battery and stops power supply, and diesel engine provides power supply by generator to rear class equipment.
Owing to using generator and dynamoelectric machine device to be coaxially coupled, the ability of synchronous phase modulation can be had; Owing to adopting dynamoelectric machine device, the voltage transitions of any grade can be realized, make system have higher efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing conventional static on line type UPS;
Fig. 2 is the structural representation of existing conventional rotation UPS;
Fig. 3 mixes uninterruptible power system structure chart described in the embodiment of the present invention;
Fig. 4 is the application schematic diagram mixing uninterruptible power system described in the embodiment of the present invention;
Fig. 5 mixes uninterruptible power system and peripheral circuit connection diagram described in the embodiment of the present invention.
Embodiment
The invention provides a kind of mixing uninterruptible power system, make full use of the advantage of static UPS and rotation UPS, for successive load equipment provides in time uninterrupted power supply reliably, ensure the safe operation of successive load equipment.
Static UPS and rotation UPS, in order to make full use of the advantage of static UPS and rotation UPS, is combined use by the present invention, and composition is a kind of mixes UPS.Make it have static simultaneously and rotate the advantage of UPS, as output impedance is little, out-put supply distortion is little, and reliability is high, and the strong and dynamic frequency of transient error ability responds the advantages such as fast.Common hybrid UPS has three kinds of forms, and one is off-line type mixing UPS, is made up of off-line UPS and rotation UPS, another kind is Line interaction mixing UPS, be made up of on-line blackbody cavity and rotation UPS, the third is online mixing UPS, is made up of on line type UPS and rotation UPS.The pluses and minuses that often kind of structure has are relevant to the feature of its component parts.
In order to make those skilled in the art understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
See Fig. 3, this figure mixes uninterruptible power system structure chart described in the embodiment of the present invention.
Mix uninterruptible power system described in the embodiment of the present invention, described system comprises: power cut-off device (FUD, Fast Utility Disconnect), generator, diesel engine, dynamoelectric machine device, reversible transducer and battery fast.
Described generator, is connected with described quick power cut-off device.
Described diesel engine, is connected with described generator by clutch.
Described battery, is connected with described reversible transducer, and reversible transducer is connected with described dynamoelectric machine device;
Described generator is coaxial with described dynamoelectric machine device.
Described quick power cut-off device, is connected in the path of input power and successive load equipment (not shown in Fig. 3).When input power break down or power interruptions time disconnect the path of input power and successive load equipment fast.When input power is normal, input power is charged to described battery by described generator and described dynamoelectric machine device and described reversible transducer.When input power fault, described battery discharge, provides energy by described reversible transducer, dynamoelectric machine device and generator to described successive load equipment.While described battery discharge provides energy to described successive load equipment, diesel engine completes start-up course, and diesel engine normally starts rear battery and stops power supply, and diesel engine drive electrical generators provides power supply to rear class equipment.
Dynamoelectric machine device is operated in Generator Status when charging the battery; Dynamoelectric machine device is be operated in electric motor state when drive diesel engine and generator.
Described input power can be specifically the power supply that medium voltage network provides after station service transformer.
As input power after the voltage of medium voltage network is converted by intermediate voltage generating station transformer, input power is connected with quick power cut-off device FUD, is to press the equipment such as input power allocation units to power in rear class when line voltage is normal.
Quick power cut-off device FUD input power break down or power interruptions time disconnect the path of input power and successive load equipment fast, in order to avoid threaten to successive load equipment.When input power is normal, input voltage is charged to battery by generator and coaxial dynamoelectric machine and reversible transducer; When input power fault, battery discharge, provides energy by reversible transducer, dynamoelectric machine and generator to rear class equipment.
Short-time energy when battery provides input power fault or interrupts, power supply needs to start diesel engine for a long time.Diesel engine starting while battery discharge, diesel engine normally starts rear battery and stops power supply, and diesel engine drive electrical generators provides power supply to rear class equipment.
Mix described in the embodiment of the present invention uninterruptible power system by rotating electromagnetic power apparatus such as static reversible transducer, battery and motors with the use of providing in time uninterrupted power supply reliably to successive load equipment, ensure the safe operation of successive load equipment.
Mix uninterruptible power system tool described in the embodiment of the present invention to have the following advantages: owing to applying reversible transducer, do not need independent battery charger and discharge loop; Use generator and dynamoelectric machine device to be coaxially coupled, the ability of synchronous phase modulation can be had; Owing to adopting dynamoelectric machine device, the voltage transitions of any grade can be realized, make system have higher efficiency.
Uninterruptible power system application is mixed very extensive described in the embodiment of the present invention.See Fig. 4, this figure is the application schematic diagram mixing uninterruptible power system described in the embodiment of the present invention.
Figure 4 shows that one of application mode.The power supply such as middle pressure input power allocation units PDU (Power Distribution Unit), server, POL POL (Point Of Load) that uninterruptible power system is specially rear class is mixed described in the embodiment of the present invention.Namely described successive load equipment is middle pressure input power allocation units, server, the POL of rear class.
See Fig. 5, this figure mixes uninterruptible power system and peripheral circuit connection diagram described in the embodiment of the present invention.
Mix uninterruptible power system described in the embodiment of the present invention and can also comprise the detecting unit (realizing voltage, current detecting) be arranged between described quick power cut-off device and described input power, for voltage signal and/or the current signal of described quick power cut-off device front end of sampling.
Mix uninterruptible power system described in the embodiment of the present invention and can also comprise the controller be connected with described detecting unit, the voltage signal of the input power that described controller is sampled according to described detecting unit and/or current signal, judge described input power break down or power interruptions time, disconnect fast the path of input power and successive load equipment; Control described battery discharge, provide energy by described reversible transducer, dynamoelectric machine and generator to described successive load equipment.
Mix uninterruptible power system described in the embodiment of the present invention and can also comprise the generator, the dynamoelectric machine rotation speed detection unit that are connected with described generator, dynamoelectric machine.The signal detected is delivered to described controller by generator, dynamoelectric machine rotation speed detection unit.Described controller controls the running status of generator, dynamoelectric machine according to the above-mentioned signal controlling detected.
Mix uninterruptible power system described in the embodiment of the present invention and can also comprise the reversible transducer electric current, the voltage signal detecting unit that are connected with described reversible transducer.
The signal detected is delivered to described controller by reversible transducer electric current, voltage signal detecting unit.The operating state of described controller reversible transducer according to the above-mentioned signal controlling detected.When being operated in rectification mode to the charging of rear class battery, when being operated in inverter mode, battery discharges.
Mix uninterruptible power system described in the embodiment of the present invention and can also comprise the cell voltage, temperature, the electric power detection unit that are connected with described battery.
The signal of detection is delivered to described controller by cell voltage, temperature, electric power detection unit.Controller is battery operated in the working range of safety according to the above-mentioned signal controlling detected.
Because reversible transducer is power electronic equipment, fast response time, so can at once for successive load equipment provides energy at the initial time of input power fault.But because the energy density of battery is low, the energy stored only can maintain the running time that rear class equipment several milliseconds arrives a few second, and concrete holding time is relevant with the capacity of battery and the size of successive load.
When input power fault, controller sends instruction to diesel engine simultaneously, as shown in Figure 5.Dynamoelectric machine drives diesel engine by clutch, makes diesel engine smooth starting, and after diesel engine normally starts, battery stops electric discharge.Diesel engine provides power supply by generator to rear class equipment.Diesel engine and dynamoelectric machine belong to device for electromagnetic power, and critical piece is magnetic element, so dynamic responding speed is slow, within the time that battery powers to the load, diesel engine completes start-up course and provides energy to rear class equipment.The effect of clutch is that diesel engine is steadily connected with dynamoelectric machine co-ordination, in order to avoid owing to impacting the damage causing diesel engine, dynamoelectric machine.
Mixing uninterruptible power system periphery of the present invention can also comprise the filter of the output being arranged on described system.
The filter that described filter specifically can be made up of inductance and electric capacity.
Described filter also can adopt the harmonic wave of the certain number of times of software filtering filtering in control software design.
Require that stricter occasion can be considered to arrange frequency correcting apparatus at the output of described system for output quality, by detecting the phase place of described system output signal, compare with reference signal and controlled, the frequency that described frequency correcting apparatus is outputed signal meets the needs of described successive load equipment reality.
Mix uninterruptible power system described in the embodiment of the present invention, the under-voltage and over-pressure safety device of the line voltage be connected with described input power can also be comprised further, for protecting under and overpressure situation under-voltage at line voltage.
According to different control programs, can to sample respectively the voltage signal of FUD front end, current signal or simultaneously sampled voltage and current signal, the signals such as the rotating speed of generator, dynamoelectric machine, the signal such as electric current, voltage of reversible transducer, with the signal such as voltage, temperature, electricity of battery, complete the control to whole system in the controller, sending control command by carrying out the computing such as Mathematical treatment, Logic judgment to signal, controlling the action of diesel engine, generator, dynamoelectric machine, battery and reversible transducer.Line voltage overvoltage and under-voltage time timely action FUD is disconnected.
Mix under uninterruptible power system can be used in different electrical voltage systems described in the embodiment of the present invention, operation principle is similar to, and does not limit power grade.By the rotating electromagnetic power apparatus such as reversible transducer, battery, motor of static state with the use of providing in time uninterrupted power supply reliably to successive load, ensure the safe operation of successive load equipment.
The above is only the preferred implementation of mixing uninterruptible power system of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. mix a uninterruptible power system, it is characterized in that, described system comprises: power cut-off device, generator, diesel engine, dynamoelectric machine device, reversible transducer and battery fast;
Described generator, is connected with described quick power cut-off device;
Described diesel engine, is connected with described generator by clutch;
Described battery, is connected with described reversible transducer, and reversible transducer is connected with described dynamoelectric machine device;
Described generator is coaxial with described dynamoelectric machine device;
Described quick power cut-off device, is connected in the path of input power and successive load equipment; When input power break down or power interruptions time disconnect the path of input power and successive load equipment fast; When input power is normal, input power is charged to described battery by described generator and described dynamoelectric machine device and described reversible transducer; When input power fault, described battery discharge, provides energy by described reversible transducer, dynamoelectric machine device and generator to described successive load equipment;
While described battery discharge provides energy to described successive load equipment, described diesel engine completes start-up course, and described diesel engine normally starts rear described battery and stops power supply, and described diesel engine drives described generator to provide power supply to described rear class equipment.
2. mixing uninterruptible power system according to claim 1, is characterized in that, described input power is the power supply that medium voltage network provides after station service transformer.
3. mixing uninterruptible power system according to claim 2, is characterized in that, described successive load equipment is middle pressure input power allocation units, server and POL.
4. mixing uninterruptible power system according to claim 1, it is characterized in that, described system also comprises the detecting unit be arranged between described quick power cut-off device and described input power, and described detecting unit is for the voltage signal of described quick power cut-off device front end of sampling and/or current signal;
Described system also comprises the controller be connected with described detecting unit, the voltage signal of the input power that described controller is sampled according to described detecting unit and/or current signal, judge described input power break down or power interruptions time, disconnect fast the path of input power and successive load equipment.
5. mixing uninterruptible power system according to claim 4, it is characterized in that, described system also comprises the generator, the dynamoelectric machine rotation speed detection unit that are connected with described generator, dynamoelectric machine, the signal that described generator, dynamoelectric machine rotation speed detection unit detect delivers to described controller, is controlled the running status of described generator, dynamoelectric machine by described controller.
6. mixing uninterruptible power system according to claim 4, it is characterized in that, described system also comprises the reversible transducer electric current, the voltage signal detecting unit that are connected with described reversible transducer, the signal that described reversible transducer electric current, voltage signal detecting unit detect delivers to described controller, described controller controls the operating state of described reversible transducer, to the charging of rear class battery when described reversible transducer is operated in rectification mode, when described reversible transducer is operated in inverter mode, battery discharges.
7. mixing uninterruptible power system according to claim 4, it is characterized in that, described system also comprises the cell voltage, temperature, the electric power detection unit that are connected with described battery, the signal of described cell voltage, temperature, electric power detection unit inspection delivers to described controller, battery operated in the working range of safety for controlling.
8. mixing uninterruptible power system according to claim 1, is characterized in that, the output of described system is provided with filter.
9. mixing uninterruptible power system according to claim 8, is characterized in that, described filter is the filter be made up of inductance and electric capacity.
10. mixing uninterruptible power system according to claim 1, it is characterized in that, the output of described system is provided with frequency correcting apparatus, by detecting the phase place of described system output signal, compare with reference signal, the frequency controlling described frequency correcting apparatus output signal according to comparative result meets the needs of described successive load equipment.
11. mixing uninterruptible power systems according to claim 1, is characterized in that, described system comprises the under-voltage and over-pressure safety device of the line voltage be connected with described input power further.
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| CN201110069283.1A CN102208830B (en) | 2011-03-22 | 2011-03-22 | Hybrid uninterruptible power supply system |
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| CN201110069283.1A CN102208830B (en) | 2011-03-22 | 2011-03-22 | Hybrid uninterruptible power supply system |
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| CN102208830A CN102208830A (en) | 2011-10-05 |
| CN102208830B true CN102208830B (en) | 2015-02-11 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AU2015311401B2 (en) * | 2014-09-01 | 2018-08-02 | Vertiv Tech Co., Ltd. | Power supply system and method |
| US9859752B2 (en) * | 2015-06-05 | 2018-01-02 | General Electric Company | Uninterruptible power supply and method of use |
| CA2990125C (en) * | 2015-06-29 | 2023-08-29 | Abb Schweiz Ag | Ups with source impedance compensation |
| CA3142065A1 (en) * | 2019-06-03 | 2020-12-10 | Energy Producing Systems of America LLC | Electrical power generation and distribution |
| CN111224413B (en) * | 2020-03-12 | 2021-09-28 | 国家电网有限公司 | Emergency adjusting system for three-phase electric unbalance |
| CN112886704A (en) * | 2021-03-10 | 2021-06-01 | 贵州中联氢能能源设计研究院 | Uninterrupted power supply composed of full-automatic energy storage and grid-connected system and local network system |
| CN115149631A (en) * | 2022-06-23 | 2022-10-04 | 四川蓝海化工（集团）有限公司 | Leak-proof oil-immersed UPS (uninterrupted Power supply) |
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| CN2821180Y (en) * | 2005-01-12 | 2006-09-27 | 冯浪平 | Uninterrupted electric oil burning generator unit |
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| JPH0236738A (en) * | 1988-07-22 | 1990-02-06 | Central Glass Co Ltd | Uninterruptible power system |
| US8159082B2 (en) * | 2008-09-05 | 2012-04-17 | General Electric Company | Systems and methods for providing an uninterruptible power supply to a ship-service bus of a marine vessel |
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| CN2328124Y (en) * | 1997-05-20 | 1999-07-07 | 交通部上海船舶运输科学研究所 | Uninterruption A.C. power source |
| CN2821180Y (en) * | 2005-01-12 | 2006-09-27 | 冯浪平 | Uninterrupted electric oil burning generator unit |
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