CN1051466A - Uninterrupted power supply(ups) with gas turbine as power - Google Patents

Abstract

A kind of uninterrupted current device with gas turbine as power is to adopt when municipal power failure by the storage battery uninterrupted power supply the rapid starting operation of generating set with the composite type invention of continued power.The power electronic product that belongs to electromechanical integration.Make full use of the excitation-free generator and drive source (small size gas turbine) good characteristic thereof of rare-earth permanent magnet rotor, be equipped with the real-time control of microcomputer and industry controlling interface, make that package unit is simple in structure, control easily, volume is little, in light weight, power output has been filled up the vacancy of large-capacity ups equipment greatly, for guaranteeing safety, reliable long-time power supply, provide a new equipment.

Description

Uninterrupted power supply(ups) with gas turbine as power

The present invention relates to a kind of power supply unit that does not have a power failure, specifically, relate to a kind of uninterrupted power supply(ups), belong to the power electronic product of electromechanical integration with gas turbine as power.

Because electric energy can just be changed into other forms of energy (as heat energy, luminous energy, mechanical energy and chemical energy etc.) with very easy method, so in national economy all departments and daily life, occupy more and more important position, and people are to the stable of power supply with require also increasingly stringent and harshness reliably.For avoiding low capacity instruments such as microcomputer and electronic instrument AC power to be influenced the uninterrupted power supply device UPS(UNINTERRUPTIBLE POWER SYSTEM of normal operation because of the power supply troubles such as interference of voltage fluctuation, unexpected left alone without help electricity, peak voltage or high-frequency electric wave) existing shiploads of merchandise puts goods on the market, but these products can only be fully loaded with the voltage stabilizing power supply usually in the very limited time, for example a few minutes to tens minute, promptly capacity is very little.For some more for a long time the continued power electrical power that maybe need export larger capacity never see appearance with the no-break power unit that drives conventional dynamoelectric equipment.

The uninterrupted power supply(ups) that the purpose of this invention is to provide a kind of big capacity low-voltage (single-phase is 240 volts, and three-phase is 400 volts) continued power, its power-on time can not be subjected to the battery capacity restriction and long-time power supply.

The objective of the invention is to realize by a kind of uninterrupted power supply(ups) with gas turbine as power.Its composition includes back-up source unit and diverter switch and the control device thereof that generating set, storage battery and inverter are formed, it is characterized in that generator is the excitation-free generator of rare-earth permanent magnet rotor, make the power source of its driving and control interface (RTU) and microcomputer as real-time control apparatus with standard industry with small size gas turbine.

Hardware configuration of the present invention as shown in Figure 1,1 is small size gas turbine among the figure.The 2nd, with the excitation-free generator of the generator-rare-earth permanent magnet rotor of gas turbine coaxial rotation.The 3rd, fuel gas supply equipment.The 4th, batteries.The 5th, inverter, it and the former constitute the back-up source unit.The 6th, city's electrical network.The 7th, the diverter switch group.The 8th, the distributed on the spot industry controlling interface (RTU) that each unit is controlled.The 9th, microcomputer, the 10th, communication cable.Accompanying drawing has shown near generating set, back-up source unit and the standard industry that oneself is nearby respectively arranged of diverter switch group is controlled interface RTU1 and RTU2, on each RTU, be inserted with the input module 11 of each unit of control respectively, these modules 11 are connected with microcomputer 9 by the serial communication interface on the RTU again, and accept its instruction control in real time each unit running or action, and reflect its operating mode to the microcomputer sensing.For example, RTU2 is responsible for gathering in real time the voltage of mains-supplied net 6 and frequency and transmits to microcomputer 9, by these parameters of MICROCOMPUTER PROCESSING.Normal as parameter, the present invention is in hot stand-by duty; Bad sign (exceeding standard etc. as unexpected left alone without help electricity, brownout or cycle) occurs as civil power, microcomputer 9 can be made the judgement whether needs are intervened according to whether of a serious nature.When in case problem need be reacted, microcomputer 9 just sends instruction by communication cable 10, want RTU2 to cut off the city electrical network switches set A and the connection power switch group B of the present invention of power supply trouble, meanwhile, RTU1 to start back-up source unit power supply immediately and in 15 seconds, start small size gas turbine and generator.The batteries 4 of back-up source unit should be powered in tens milliseconds time, through the pure sine wave voltage of inverter 5 outputs single-phase 220 volts ± 5% or three-phase 380 volts ± 3%.The high small-sized aero-gas turbine of reliability of the present invention can (be no more than for 15 seconds usually) and starts and enter running status and drive generator and run well in very short time.At this moment the back-up source unit cuts off power supply automatically, and by the generating set power supply of being incorporated into the power networks.All above-mentioned actions all are under microcomputer united and coordinating commander, finish under the various instructions of sending by RTU1 and RTU2.And when city's power system restoration is normal, automatically recover, state former again by mains-supplied and by civil power to battery charging, reach till the rated value, unattended operation drops into automatically or withdraws from.

The excitation-free generator of the rare-earth permanent magnet rotor that the present invention adopts, because the magnetic energy product height of rare earth permanent-magnetic material, can make the radial dimension of its rotor reduce, moment of inertia is little, directly with the coaxial coupling installation of high-revolving gas turbine and reducing gear needn't be installed, brushless and do not need excitation, control is simple.Because of the frequency of output AC electricity is decided by rectification adverser 5, irrelevant with the rotating speed of generator 2, be not subjected to the restriction of synchronous speed, can make gas turbine 1 and generator remain the optimum speed coupling in the use, and when load variations causes that output voltage changes, as long as the rotating speed of adjusting gas turbine and generator just can be adjusted the alternating current voltage of output, realize the voltage stabilizing target.The medium frequency alternating current of generating set output after inverter 5 high frequencies become to meet the electrical network standard criterion, send to load through power switch group B of the present invention again.Whole process was no more than for 15 seconds and just can finishes, and during this 15 second, was then externally powered by the back-up source unit, so just guaranteed that external load is in the uninterrupted power supply state.

Gas turbine of the present invention can be selected the small-sized aircraft engine of WDZ-1 type aircraft engine made in CCCP or models such as PT-6, AH-1 for use.The fuel of the coke-stove gas of liquefied petroleum gas, natural gas or urban duct conveying as gas turbine is adopted in suggestion, with the abundance of guaranteeing supply, the low the common reed of price, reduces cost of electricity-generating.And do not need to prepare special bunkering system.Also can use aviation kerosine in case of necessity, but less economical, only be applicable to special occasions.As the source that is used as power with WDZ-1 type combustion machine made in CCCP, the total weight of apparatus of the present invention is about 100 kilograms, comprise that control system all is assembled into a casing, take up room about 2 * 1.5 * 1.5 cubic metres, volume is little, in light weight, can be used as vehicle-mounted emergency power supply fully and use, and its power output can reach 60 watts, if supply of fuel is guaranteed, the pure sine wave alternating voltage that can export full voltage stabilization and frequency stabilization for a long time incessantly uses for common electromechanical equipment.

The present invention adopts the storage battery uninterrupted power supply and the composite type uninterrupted power supply device of generating set continued power.By microcomputer and standard industry control interface whole device is monitored in real time, can be realized unwatched Autoattendant, belong to the power electronics product of electromechanical integration, organically combine logistics (can flow) and information flow unified.Can guarantee the long-time power supply safety of big capacity electromechanical equipment, reliability service can adopt urban duct coal gas, natural gas or liquefied petroleum gas to make fuel again, needn't solve the configuration of bunkering or conveying system separately specially.Select for use rare-earth permanent-magnet variable-speed generator and small size gas turbine to make generating set, make that package unit is simple in structure, control easily, volume is little, in light weight, can make vehicle-mounted movable emergency power supply, in addition, its power output is big, can be from 60 watts to 750 watts, form series, solved the contradiction of big capacity LPS device absence, (for example: hospital, communication center, television transposer stations etc.) power supply is reliable and secure provides a material equipment for important office, unit.

Claims (3)

1, a kind of uninterrupted power supply(ups) of gas turbine as power, its composition includes generating set, back-up source unit and diverter switch and control device thereof, it is characterized in that generator is the excitation-free generator of rare-earth permanent magnet rotor, and make the power source of its driving and control interface (RTU) and microcomputer as real-time control apparatus with standard industry with small size gas turbine.

2, the uninterrupted power supply(ups) with gas turbine as power as claimed in claim 1, it is characterized in that generator and its power source, back-up source unit nearby and the diverter switch group standard industry control interface (RTU) nearby respectively arranged, be inserted with the input module of each unit of control on each RTU respectively, these modules are connected with microcomputer by the serial communication interface on the RTU again.

3, the uninterrupted power supply(ups) with gas turbine as power as claimed in claim 1 is characterized in that gas turbine can be selected WDZ-1 type aircraft engine made in CCCP for use or such as the small-sized aircraft engine of models such as PT6, AH-1.