CN207424225U - A kind of power of alterating and direct current multi-function test stand - Google Patents
A kind of power of alterating and direct current multi-function test stand Download PDFInfo
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- CN207424225U CN207424225U CN201721629710.6U CN201721629710U CN207424225U CN 207424225 U CN207424225 U CN 207424225U CN 201721629710 U CN201721629710 U CN 201721629710U CN 207424225 U CN207424225 U CN 207424225U
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Abstract
The utility model discloses a kind of power of alterating and direct current multi-function test stands, including power distribution equipment, operate switch board, programmable power supply cabinet, frequency converter control cabinet, generator drags platform and load box, power distribution equipment output terminal is connected with programmable power supply cabinet input terminal, programmable power supply cabinet output terminal is connected with frequency converter control cabinet energization input, frequency converter control cabinet output terminal is connected with generator dragging platform energization input, generator drags platform output terminal and is connected with operation switch board, operate switch board by bus respectively with programmable power supply cabinet, the control signal input of frequency converter control cabinet is connected, operation switch board is connected with load box input terminal.The utility model manages whole process using computer integration control technology, excellent human-computer interaction interface is provided according to test assignment, dynamic performance index can be measured and analyzed, system capital equipment and component have convertibility, and equipped with complete internal detection interface, convenient for searching failure cause rapidly.
Description
Technical field
The utility model is related to a kind of power of alterating and direct current multi-function test stands.
Background technology
Aircraft operation has strict requirements to each component, it is necessary to periodically be overhauled, removed a hidden danger, just can guarantee its safety
Operation, is typically detected aircraft with testing stand, there is different testing stands for different components.Have much in aircraft
Side uses attachment of double current generator, starter and generator etc., is both needed to often be detected it.
Traditional electro-mechanical formula airplane power source testing stand, it is simple in structure, failure rate is relatively low, it can be only done power-supply system and its part
Department enclosure is tested, and function is single, and mechanical speed governors formula dragging platform rotational speed regulation precision is low, speed governing is slow, high noise, and console is using complete
Manual operation, is susceptible to malfunction, higher to testing crew Capability Requirement, it is impossible to complete dynamic performance index analysis；Frequency conversion
Drawing type airplane power source testing stand needs the cold lubricating system of lubricating oil of mating complexity, increases equipment due to the use of gear speeder
Volume and weight, and increase the difficulty of maintaining, still can not achieve the automation pipe of power of alterating and direct current multi-function test stand
Reason and dynamic performance index analysis；Component-level computer measurement and control formula airplane power source testing stand is set for important be tested such as generator
Standby, still using traditional operation display pattern, operating process is complicated, tests process not manageability.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of power of alterating and direct current multi-function test stand.
The purpose of this utility model is achieved through the following technical solutions：A kind of power of alterating and direct current multi-function test stand,
It is described to match somebody with somebody including power distribution equipment, operation switch board, programmable power supply cabinet, frequency converter control cabinet, generator dragging platform and load box
Electric installation output terminal is connected with the programmable power supply cabinet input terminal, the programmable power supply cabinet output terminal and the frequency converter control cabinet
Energization input is connected, and frequency converter control cabinet output terminal is connected with generator dragging platform energization input, and generator dragging platform is defeated
Outlet is connected with operation switch board, and operation switch board is believed by bus with the control of programmable power supply cabinet, frequency converter control cabinet respectively
Number input terminal is connected, and operation switch board is connected with load box input terminal.
The power distribution equipment includes power distribution cabinet and distribution box, and general supply controller, the distribution are equipped in the power distribution cabinet
Case exports three-phase alternating current to general supply controller, and alternating current is distributed to corresponding electrical equipment by the general supply controller.
Several voltage output controllers, the alternating current warp of the general supply controller distribution are additionally provided in the power distribution cabinet
Voltage output controller is input to corresponding electrical equipment.
Phase sequence relay is additionally provided in the power distribution cabinet, the three-phase alternating current that distribution box is input to power distribution cabinet is first input into
Phase sequence relay, then general supply controller is input to by phase sequence relay.
The friendship that connection is matched there are three overcurrent relay and respectively with three overcurrent relays is set in the distribution box
Current transformer, each phase of three-phase alternating current concatenates an overcurrent relay respectively, by the three-phase alternating current of overcurrent relay
It is input in power distribution cabinet.
The power distribution equipment further includes several one-way safety isolating transformers, the single-phase electricity of the general supply controller distribution
Respectively through one-way safety isolating transformer, voltage output controller distribute to the operation switch board, programmable power supply cabinet and
Load box.
The load box includes the movement circuit of housing and setting inside housings, and the bottom of housing is provided with cold air
Entrance, the top of housing are equipped with hot air outlet, are equipped with filter screen at the cool air inlet, enclosure interior is additionally provided with radiation air
Machine.
The movement circuit includes Switching Power Supply, load output protection circuit, temperature survey protection circuit, cooling fan connection
Lock control circuit, control detection circuit and RLC load arrays, the current output terminal of Switching Power Supply is respectively by controlling detection electricity
Road, relay contacts device assembly are connected with the energization input of temperature survey protection circuit, load output protection circuit；Temperature is surveyed
Amount protection circuit signal output part respectively with cooling fan interlock control circuit, load output protection circuit signal input part
It is connected, the control signal output of cooling fan interlock control circuit protects circuit, load output protection with temperature survey respectively
The control signal input of circuit is connected, load the signal output part of output protection circuit respectively with temperature survey protection circuit,
Cooling fan interlock control circuit is connected with the signal input part of RLC load arrays.
The generator dragging platform includes pedestal and the frequency converter and high-speed induction motor that are arranged on pedestal, the frequency conversion
Device realizes that signal is connected with high-speed induction motor, and the high-speed induction motor is realized by shaft coupling and tested generator and linked,
Electromagnetic brake is also equipped on the high-speed induction motor；
The generator dragging platform further includes the first air blower and the second air blower, the supply input of first air blower
End is connected with the frequency converter control cabinet, first air blower by air passage to high-speed induction motor ventilation and heat, described the
Two air blowers radiate to tested hydro-generator ventilation by air passage.
The generator dragging platform further includes signal detection controller and several temperature being arranged on high-speed induction motor
Detector, the detection signal output part of temperature monitor are connected with the detection signal input part of signal detection controller, signal inspection
The control signal output for surveying controller is connected with the control signal input of the first air blower.
The generator dragging platform further includes the first wind pressure flow detector, and the first wind pressure flow detector is arranged on
In air passage between first air blower and high-speed induction motor, the detection signal output part and signal of the first wind pressure flow detector
The detection signal input part of detection controller is connected, the control signal output of signal detection controller and the control of the first air blower
Signal input part processed is connected.
The generator dragging platform further includes the second wind pressure flow detector, and the second wind pressure flow detector is arranged on
In air passage between second air blower and tested generator, detection signal output part and the signal of the second wind pressure flow detector are examined
The detection signal input part for surveying controller is connected, the control signal output of signal detection controller and the control of the second air blower
Signal input part is connected.
A kind of power of alterating and direct current multi-function test stand further includes radiator, described radiator one end and frequency converter
Switch board energization input is connected, and the other end is connected with the operation switch board control signal input, the radiator pair
The operation switch board ventilation and heat.
The beneficial effects of the utility model are：
1）Using test and repair integrative solution, system is tested using computer generalization, by airplane power source equipment
Performance test and actual repair work demand Combined design, realize test with repair it is effective is connected, formed unified test and
Maintenance work pattern, the airplane power source power of alterating and direct current multi-function test stand synthesization that proposes of creativeness is built for the first time inside and outside army
Thought.
2）Using computer integration control technology, motor drag, load control and experimental implementation process etc. are integrated
The control management of change can provide excellent human-computer interaction interface according to specific test assignment, simplify procedures, improve simultaneously
The security of test.
3）Using gearless type high speed three-phase alternating current Frequency converting driving technology, cancel the large sizes such as fuel tank, oil pump, gear speeder
Equipment simplifies system structure, reduces equipment volume and weight, reduces the difficulty of maintaining, improves dragging system
Functional reliability.
4）Three overcurrent relays are introduced in the three-phase alternating current of power supply, system is worked as to realize by D.C mutual-inductor
When any one phase current in circuit is more than setting electric current, function that just disconnection system input power is protected.
5）For simulating aircraft electrical equipment, the utilization of power load box that aircraft generator is sent carries out load box used
Consumption can effectively verify the working characteristics of generator, and electrical parameter performance test and dimension are carried out to aircraft electrical equipment convenient for the later stage
Shield.
6）Complete machine uses modularized design, easy to operate, easy to maintain；It can be according to customer requirement test voltage, electric current etc.
Parameter provides the detection means of science for high-power ac power equipment.
7）Generator dragging platform used can simulate the rotating speed of aircraft engine, for realization device miniaturization and convenient for army
Using operation, design directly drives the scheme of high-speed induction motor to realize the stepless time adjustment of motor, frequency conversion using frequency converter
Power of motor is 150kW, and the range of speeds can meet the test request of a variety of generators in 0~8500 rpm.
Description of the drawings
Fig. 1 is the utility model principle block diagram；
Fig. 2 is the utility model power distribution equipment functional block diagram；
Fig. 3 is the utility model load box structure diagram；
Fig. 4 is the utility model load box functional block diagram；
Fig. 5 drags platform structure diagram for the utility model generator；
Fig. 6 drags platform functional block diagram for the utility model generator；
In figure, 1- housings, 2- cool air inlets, 3- filter screens, 4- cooling fans, 5- hot air outlets, 6- pedestals, 7- high
Fast variable-frequency motor, 8- shaft couplings.
Specific embodiment
Below in conjunction with embodiment, the technical solution of the utility model is clearly and completely described, it is clear that retouched
The embodiment stated is only the utility model part of the embodiment, instead of all the embodiments.Based in the utility model
Embodiment, those skilled in the art's all other embodiments obtained on the premise of not making the creative labor, all belongs to
In the scope of the utility model protection.
Refering to Fig. 1-6, the utility model provides a kind of technical solution：As shown in Figure 1, a kind of power of alterating and direct current compbined test
Platform, including power distribution equipment, operation switch board, programmable power supply cabinet, frequency converter control cabinet, generator dragging platform and load box.Outside
It connects after power supply enters power distribution equipment and is separately input to frequency converter control cabinet, operation switch board, programmable power supply cabinet, generator dragging platform
And load box.
As shown in Fig. 2, the power distribution equipment output terminal is connected with the programmable power supply cabinet input terminal, the power distribution equipment is made
Monitoring and power distribution unit for input power, indicated by 380V inputs display, sequence examing and instruction, inverter supply,
First air blower power supply instruction, load box cooling fan power supply instruction, dragging platform cooling fan power supply instruction, programmable power supply cabinet supply
The compositions such as electricity instruction, operation switch board power supply instruction.
The power distribution equipment includes power distribution cabinet and distribution box, and general supply controller, the distribution are equipped in the power distribution cabinet
Case exports three-phase alternating current to general supply controller, and alternating current is distributed to corresponding electrical equipment by the general supply controller,
Computer and central controller in general supply controller carry out reasonability control according to the power supply requirement property of electrical equipment to power supply.
Several voltage output controllers are additionally provided in the power distribution cabinet, the alternating current of general supply controller distribution is through voltage
O controller is input to corresponding electrical equipment, and the electrical equipment includes frequency converter control cabinet, operation switch board, program-controlled electric
Source cabinet and load box.
The operation switch board passes through the bus control signal with the programmable power supply cabinet, the frequency converter control cabinet respectively
Input terminal is connected.
The programmable power supply cabinet output terminal is connected with the frequency converter control cabinet energization input, the frequency-conversion control cabinet profit
The control action for dragging platform on aircraft at a high speed is realized with internal frequency converter, realizes the speed regulating control of high-speed induction motor 7.
Phase sequence relay is additionally provided in the power distribution cabinet, the three-phase alternating current that distribution box is input to power distribution cabinet is first input into
Phase sequence relay, then general supply controller is input to by phase sequence relay.The phase sequence relay be used as sequence examing, only when
Main contactor, and the protective relay of the automatic phase sequence cognition of energy are just connected when input power phase sequence is correct, avoids some special machines
Electric equipment causes accident or equipment damage because of being reversed after power phase is reversed.The control signal output of general supply controller
Also realize that signal is connected with system controller, display unit and protection circuit, system controller, display unit and protection circuit are
General supply controller provides the logistics support guarantee on basis, plays the role of management, display and protection, protects general supply controller
Hold normal operating conditions.
The friendship that connection is matched there are three overcurrent relay and respectively with three overcurrent relays is set in the distribution box
Current transformer, each phase of three-phase alternating current concatenates an overcurrent relay respectively, by the three-phase alternating current of overcurrent relay
It is input in power distribution cabinet.
After external three-phase 380V/50Hz power inputs, overcurrent protective device is designed in inlet wire distribution box, i.e., in power supply
The overcurrent relay of three 0~9.99A is introduced in three-phase alternating current, by matching somebody with somebody 50 outside:1 D.C mutual-inductor is realized when being
When any one phase current in circuit of uniting is more than setting electric current, the just function protected of disconnection system input power.
The power distribution equipment further includes several one-way safety isolating transformers, the single-phase electricity of the general supply controller distribution
Respectively operation switch board, programmable power supply cabinet and load box are distributed to through one-way safety isolating transformer, voltage output controller.
The one-way safety isolating transformer makes input winding and output by least corresponding to double insulation or strengthening the insulation of insulation
Winding is electrically separating, and single-phase electricity is transported to voltage output controller with extra low voltage, voltage output controller is then pressed
Voltage is delivered to operation switch board, programmable power supply cabinet and load box according to the nominal parameter of electrical equipment.
Computer and adaptation unit are equipped in the operation switch board, the operation switch board is the core of whole system
Part, is responsible for the integrated management of all experiment resources, and the operation switch board designs to complete whole system using PXI bussing techniques
Function and performance test work.
The computer mainly include industrial personal computer, 1553B emulators, data acquisition module, data discrete control module with
And communication module etc..
The hardware interface of the computer support hardware can by PXI interfaces and AD capture cards, isolate and exports I/O cards, goes here and there
Mouth expansion card, 1553B boards communicate；Serial ports（RS232, RS485) pass through serial ports and programmable power supply cabinet, frequency converter control cabinet
Communication.
The 1553B emulators mainly include 1553B boards and communication cable two parts form, and can send and receive confluence
The order of power controller, engine controller, so that testing stand identifies its working condition and parameter.
The data discrete control module mainly complete switch amount, the control of relay box contactor and 64 tunnels every
From output.
The communication module needs the RS422 communications of completion busbar power control unit, the RS485 of frequency converter control cabinet to lead to
News, the RS485 communications of electrical quantity sensor, the RS485 communications of load box, the RS232 communications of programmable power supply cabinet, RS232 communications connect
Mouthful it is more, using PXI serial port expanding modules, realize that interface connects.
The data acquisition module mainly completes voltage, electric current, discrete switch amount, system reaction time and various power supplys letter
Number test.48 road acquisition channels gather 0~5VDC signals per road, can meet millivolt signal acquisition, are mainly used for acquisition and come from
The voltage signal of signal adapter.
The adaptation unit mainly has electrical quantity sensor, voltage and current sensor, shunting meter, relay, contactor etc.
Device, for completing signal conversion and control.
The electrical quantity sensor uses three-phase four-wire system connection mode, can test exchange output parameter, passes through its own
RS485 Communications And Computers realize signal exchange.
The voltage-current sensor its power supply, signal input, signal output are isolated, and by each voltage and current
Sensor output collects data collecting plate card.
The time measurement of measured piece is realized by software, when software receives the commencing signal of time measurement, is begun to
Timing when receiving stop signal, just stops timing.The control of relay, contactor is controlled by digital I/O cards, works as number
When word I/O cards receive the order of software, corresponding port just exports signal, to control relay coil, is closed relay, after
The closure of electric switch controls corresponding relay and contactor, to carry out signal switching.
The programmable power supply cabinet is divided into program-control DC power cabinet and exchanges programmable power supply cabinet two parts, and it acts as carrying out
During power-supply system performance test, output current is to meet the different power supply requirement of tested department enclosure.
It is described operation switch board be connected with the load box input terminal, as shown in figure 3, the load box including housing 1 with
And the movement circuit inside housing 1 is arranged on, the bottom of housing 1 is provided with cool air inlet 2, and the top of housing 1 is equipped with heat sky
Gas exports 5, and filter screen 3 is equipped at the cool air inlet 2, cooling fan 4 is additionally provided with inside housing 1.
The filter screen 3 is used to filter the impurity in cold air, purifies cold air；Cooling fan 4 is arranged on element and installs shape
Into heat dissipation wind channel in, by outside the heat generated during element manipulation discharge babinet so as to the unlikely damage of protection element.
In test job, which is blown into cold wind using the cool air inlet 2 from 1 bottom of housing, and the heat at top is empty
Gas outlet 5 suctions out hot wind, realizes box house and external heat exchange, and the heat of discharge is cold under the action of cooling fan 4
But, so that entire box house heat dissipation effect reaches optimal.
As shown in figure 4, the movement circuit include Switching Power Supply, load output protection circuit, temperature survey protection circuit,
Cooling fan interlock control circuit, control detection circuit and RLC load arrays.
The power distribution cabinet provides the alternating current of single-phase 220V for load box, inside sets the current output terminal difference of Switching Power Supply
By the way that detection circuit, relay contacts device assembly and temperature survey is controlled to protect the power supply of circuit, load output protection circuit defeated
Enter end to be connected, the power of alterating and direct current multi-function test stand load box further includes parameter display circuit, the parameter display circuit
Energization input be connected with the current output terminal of Switching Power Supply.
The Switching Power Supply is parameter display circuit, control detection circuit and relay contacts device assembly provide required electricity
Energy；Signal input part of the control detection circuit respectively with relay contacts device assembly, parameter display circuit is connected.It is described
Relay contacts device assembly, parameter display circuit signal output part with control detection circuit be connected.Control detection circuit energy
The signal that relay contacts device assembly is sent is controlled and detected, and controls the display of load parameter, relay contacts device assembly rises
The effects that automatic adjustment, safeguard protection, conversion circuit.
The signal output part of the temperature survey protection circuit is protected respectively with cooling fan interlock control circuit, load output
The signal input part of protection circuit is connected, temperature survey protection circuit can monitor in real time cooling fan interlock control circuit, load it is defeated
Go out to protect the temperature change of circuit, alarm signal is sent in too high or too low state, so as to adjust cooling fan interlocked control
Circuit, the temperature for loading output protection circuit, make component not be burned.
The alternating current of single-phase 220V is directly inputted to cooling fan interlock control circuit to provide required electric energy, heat dissipation
The control with temperature survey protection circuit, load output protection circuit respectively of the control signal output of interlock of fan control circuit
Signal input part is connected.Temperature change is fed back to temperature survey protection circuit by cooling fan interlock control circuit, load exports
Circuit is protected, so as to ensure that component is always worked within the scope of safe temperature；The cooling fan interlock control circuit
It is connected with cooling fan unit, necessary requirement is provided for heat dissipation work.
The signal output part of the load output protection circuit is controlled respectively with temperature survey protection circuit, cooling fan interlocking
Circuit processed is connected with the signal input part of RLC load arrays.The signal output part of the RLC load arrays is protected with load output
The signal input part of protection circuit is connected, and the performance when accessing different loads is controlled for load output protection circuit；Described is negative
It carries output protection circuit and is equipped with load output interface, beneficial to the receiving efficiency for improving equipment when data latch.
The frequency converter control cabinet output terminal is connected with generator dragging platform energization input, generator dragging platform output terminal
It is connected with operation switch board.
As shown in figure 5, the generator dragging platform includes pedestal 6 and the frequency converter being arranged on pedestal 6 and high speed frequency conversion
Motor 7.
The high-speed induction motor 7 combines the advantages of high-speed electric expreess locomotive and variable-frequency motor, high-speed electric expreess locomotive is small,
It can be connected directly to save traditional machinery speed increasing device with high speed load, drive system is improved while reducing system noise
Efficiency, the magnetic flux frequency that is mainly characterized by spinner velocity high, stator winding current and iron core is high, power density and loss are close
Degree is big.And variable-frequency motor refers under normal environment conditions, is connected with 100% nominal load in the range of 10% ~ 100% normal speed
Reforwarding row, Wen Sheng do not exceed the motor of motor calibration feasible value.The two combination can improve high-speed induction motor 7 efficiency and
Heating property makes it be more in line with the technology requirement in dragging platform.
Electromagnetic brake is installed, electromagnetic brake makes the fortune in high-speed induction motor 7 on the high-speed induction motor 7
The effects that moving part stops or slows down, passing power and controlled motion are mainly played in the transmission system in high-speed induction motor 7, it
By the interaction force between magnetic pole and magnetic pole high-speed induction motor 7 is made to brake, there is compact-sized, easy to operate, response
It is sensitive, using reliable, it is easy to accomplish the advantages that far distance controlled.
The frequency converter realizes that signal is connected with high-speed induction motor 7, and high-speed induction motor 7 is directly driven using frequency converter
Method realize the stepless speed regulation of motor, in a manner that the frequency for gathering frequency converter is multiplied by multiplying power realize high speed variable-frequency electric
The real-time rotating speed acquisition of machine 7, realizes the miniaturization of equipment, is operated convenient for the use of army.
The high-speed induction motor 7 is realized by shaft coupling 8 and tested generator and linked, in high-speed induction motor 7 and quilt
It surveys in the power train process of generator, shaft coupling 8 plays the role of buffering, vibration damping and improves dynamic property.The shaft coupling 8
Bell-jar is installed outside so that total is compact, effectively saves space, reduces dragging stage body product.
The generator dragging platform further includes the first air blower and the second air blower, the supply input of first air blower
End is connected with the frequency converter control cabinet, first air blower by air passage to 7 ventilation and heat of high-speed induction motor, described the
Two air blowers radiate to tested hydro-generator ventilation by air passage.Preferably, the air passage wants short and straight, and turn will be lacked.Because
When structure size is unaffected, increase air passage area can reduce the pressure loss, while can reduce the noise of air blower.
The power of alterating and direct current multi-function test stand generator dragging platform further includes signal detection controller and several settings
Temperature monitor on high-speed induction motor 7, the inspection of the detection signal output part and signal detection controller of temperature monitor
It surveys signal input part to be connected, the control signal output of signal detection controller and the control signal input phase of the first air blower
Even.
Temperature measuring device is the high precision instrument of thermometric, can be influenced by temperature and be expanded with heat and contract with cold using gas, Neng Goushi
When detect the temperature change of high-speed induction motor 7, the temperature of high-speed induction motor 7 is made to be maintained in normal range (NR), so as to increase
Long life of winding.
Signal detection controller receives the temperature data from temperature monitor, and then analyzes the data, then passes through it
Control signal output output data adjusts the wind speed of the first air blower, so as to complete high-speed induction motor and the first air blower it
Between signal transfer and feedback operation.
Described power of alterating and direct current multi-function test stand generator dragging platform further includes the first wind pressure flow detector, and described the
One wind pressure flow detector is arranged in the air passage between the first air blower and high-speed induction motor 7, the first wind pressure flow detection
The detection signal output part of device is connected with the detection signal input part of signal detection controller, the control letter of signal detection controller
Number output terminal is connected with the control signal input of the first air blower.
Described power of alterating and direct current multi-function test stand generator dragging platform further includes the second wind pressure flow detector, and described the
Two wind pressure flow detectors are arranged in the air passage between the second air blower and tested generator, the second wind pressure flow detector
Detection signal output part is connected with the detection signal input part of signal detection controller, and the control signal of signal detection controller is defeated
Outlet is connected with the control signal input of the second air blower.
The data that the analysis wind pressure flow detector transmission of signal detection controller comes, then control air blower, adjust
Wind speed of blast blower size is saved, has the function that adjust high-speed induction motor 7 and tested generator-temperature detection, so that entirely dragging platform
It is maintained at work in normal temperature range.
A kind of power of alterating and direct current multi-function test stand further includes radiator, described radiator one end and frequency converter
Switch board energization input is connected, and the other end is connected with the operation switch board control signal input, the radiator pair
The operation switch board ventilation and heat.
The frequency converter control cabinet is mainly used for the control of the generator dragging platform, realizes the tune of high-speed induction motor 7
Speed control, the rotating speed mode that first air blower changes alternating current generator through frequency converter carry out the control of compressor flow, can be with
Energy loss caused by previous mechanical system regulating flow is greatly reduced, the radiator output terminal is also respectively with exchanging
Generator with operation switch board be connected, be continuously alternating current generator and operation switch board radiate, avoid both equipment because
Temperature is excessively high and damages.
The power supply of entire testing stand is all drawn by the power distribution equipment, with the control of the operation switch board as a whole
Center.The power supply of entire testing stand is 380V/50Hz three-phase four-wire systems, power supply capacity 150kVA, which distributes through power cabinet
For two parts, a part supplies frequency converter control cabinet for three-phase 380V supply voltages, and being conveyed to dragging system through frequency converter supplies
Electricity, another part exchange after using transformer isolation to entire testing stand, load box and the single-phase 220V of programmable power supply cabinet offer
Voltage.Switch board is operated as control centre, by bus marco frequency converter, and then realizes the control of the generator dragging platform
System, by bus marco programmable power supply, realizes the automatic management of entire pilot system power supply, by operating inside switch board
Digital output modul realizes the automation control of the load box load, meanwhile, operation switch board is also the connection behaviour of equipment under test
Make platform, the connectivity port of all power-supply system department enclosures in addition to generator is provided.
For the variable-frequency control technique employed in the utility model, the utility model also adaptation to local conditions take it is corresponding
Scheme, particular problem and solve method it is as follows：
1）The electromagnetic interference and countermeasure directly conducted by power supply
Frequency converter can make to generate higher hamonic wave in the electric power system of testing stand at work, to being connected to same power supply system
The electrical equipment of system generates interference, such as：Controller, industrial computer etc..Set solution countermeasure mainly carries out isolation work
Make：First, it is powered by using isolating transformer to industrial computer, control power supply, signal power source etc..Second is that it all adopts
With measuring cell and control element with physical isolation and Phototube Coupling, opened as the high frequency of generator speed measurement use is close
It closes.
2）The interference conducted by earthed system and countermeasure
Frequency converter is by earthed system to weak current part（Measurement and control signal circuit, industrial computer etc.）Direct-coupling is generated to do
It disturbs.Solution mainly carries out grounding design work：It is first, the signal ground of system and the ground of frequency converter and dragging motor is tight
Lattice separate.Second is that signal line uses multipoint earthing form, each earth point in signal system is all directly connected to apart from it most
Near earth point, finally unifies ground connection again, and the performance being experimentally confirmed in high frequency is very good.Third, on the software of system
It works more, such as using superposed average, singular value screening, digital filtering, filters out and shake scheduling algorithm and method.Fourth, in some moulds
The input terminal of analog quantity sensor installs wave filter additional, filters out higher hamonic wave part.
3）Interference and countermeasure by Space Coupling
Frequency converter is by space radiation to weak current part（Measurement and control signal circuit, industrial computer etc.）The interference of generation.Become
In inverter bridge mostly using PWM technologies, solid switch device switches at high speed frequency device（Du/dt is up to more than 1kV/us）It is caused
Radiation interference problem it is quite prominent, can be by space to the powerful electromagnetic wave of external radiation.Its radiation field intensity depends on interference
The current strength and tranmitting frequency in source etc..For this problem, the embodiment of the utility model is individually to do one to the frequency converter
A totally-enclosed metal safe carries out corresponding signal shielding.To improve the antijamming capability of observing and controlling, select and filtered with input and output
The frequency converter of device, the observing and controlling power supply of electrical source of power carries out electrical isolation using isolating transformer, using with isolation features
Electric signal transmitter, for measurement circuit using measures such as effective shielding, ground connection and hardware filterings, it is anti-dry that software carries out a variety of numbers
It the various technologies such as disturbs, ensures the stability and accuracy of TT＆C system work.
Above-mentioned Switching Power Supply, load output protection circuit, temperature survey protection circuit, cooling fan interlock control circuit,
Control detection circuit and RLC loads array, general supply controller, voltage output controller, phase sequence relay, signal detection control
Device processed, wind pressure flow detector are existing structure, and therefore, the concrete structure of above-mentioned various pieces just no longer repeats one by one, this
Field technology personnel can be realized on the basis of the goal of the invention and technical solution of the utility model is understood with reference to the prior art
The utility model.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form is not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and environment, and
It can be modified in contemplated scope described herein by the technology or knowledge of above-mentioned introduction or association area.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection domain in.
Claims (10)
1. a kind of power of alterating and direct current multi-function test stand, it is characterised in that：Including power distribution equipment, operation switch board, programmable power supply cabinet,
Frequency converter control cabinet, generator dragging platform and load box, the power distribution equipment output terminal and the programmable power supply cabinet input terminal
It is connected, the programmable power supply cabinet output terminal is connected with the frequency converter control cabinet energization input, frequency converter control cabinet output terminal
It is connected with generator dragging platform energization input, generator drags platform output terminal and is connected with operation switch board, and operation switch board leads to
It crosses control signal input of the bus respectively with programmable power supply cabinet, frequency converter control cabinet to be connected, operates switch board and load box is defeated
Enter end to be connected.
2. a kind of power of alterating and direct current multi-function test stand according to claim 1, it is characterised in that：The power distribution equipment includes
Power distribution cabinet and distribution box, the power distribution cabinet is interior to be equipped with general supply controller, and the distribution box exports three-phase alternating current to general supply
Alternating current is distributed to corresponding electrical equipment by controller, the general supply controller；
Several voltage output controllers are additionally provided in the power distribution cabinet, the alternating current of the general supply controller distribution is through voltage
O controller is input to corresponding electrical equipment；
Phase sequence relay is additionally provided in the power distribution cabinet, the three-phase alternating current that distribution box is input to power distribution cabinet is first input into phase sequence
Protector, then general supply controller is input to by phase sequence relay；
It is set in the distribution box there are three overcurrent relay and mutual with exchanging for three overcurrent relays matching connection respectively
Sensor, each phase of three-phase alternating current concatenate an overcurrent relay respectively, are inputted by the three-phase alternating current of overcurrent relay
Into power distribution cabinet.
3. a kind of power of alterating and direct current multi-function test stand according to claim 2, it is characterised in that：The power distribution equipment also wraps
Several one-way safety isolating transformers are included, the single-phase electricity of the general supply controller distribution isolates transformation through one-way safety respectively
Device, voltage output controller distribute to operation switch board, programmable power supply cabinet and the load box.
4. a kind of power of alterating and direct current multi-function test stand according to claim 1, it is characterised in that：The load box includes shell
Body（1）And it is arranged on housing（1）Internal movement circuit, housing（1）Bottom be provided with cool air inlet（2）, housing（1）
Top be equipped with hot air outlet（5）, the cool air inlet（2）Place is equipped with filter screen（3）, housing（1）Inside is additionally provided with scattered
Air-heater（4）；
The movement circuit includes Switching Power Supply, load output protection circuit, temperature survey protection circuit, cooling fan interlocking control
Circuit processed, control detection circuit and RLC load arrays, the current output terminal of Switching Power Supply respectively by control detection circuit,
Relay contacts device assembly is connected with the energization input of temperature survey protection circuit, load output protection circuit；Temperature survey
Protect circuit signal output part respectively with cooling fan interlock control circuit, load output protection circuit signal input part phase
Even, the control signal output of cooling fan interlock control circuit is electric with temperature survey protection circuit, load output protection respectively
The control signal input on road is connected, and the signal output part for loading output protection circuit is protected circuit with temperature survey, dissipated respectively
Air-heater interlock control circuit is connected with the signal input part of RLC load arrays.
5. a kind of power of alterating and direct current multi-function test stand according to claim 1, it is characterised in that：The generator drags platform
Including pedestal（6）Be arranged on pedestal（6）On frequency converter and high-speed induction motor（7）, the frequency converter and high speed variable-frequency electric
Machine（7）Realize signal connection, the high-speed induction motor（7）Pass through shaft coupling（8）It realizes and links with tested generator, it is described
High-speed induction motor（7）On be also equipped with electromagnetic brake.
6. a kind of power of alterating and direct current multi-function test stand according to claim 5, it is characterised in that：The generator drags platform
Further include the first air blower and the second air blower, the energization input of first air blower and the frequency converter control cabinet phase
Even, first air blower is by air passage to high-speed induction motor（7）Ventilation and heat, second air blower is by air passage to quilt
Survey hydro-generator ventilation heat dissipation.
7. a kind of power of alterating and direct current multi-function test stand according to claim 6, it is characterised in that：The generator drags platform
It further includes signal detection controller and several is arranged on high-speed induction motor（7）On temperature monitor, the inspection of temperature monitor
It surveys signal output part with the detection signal input part of signal detection controller to be connected, the control signal output of signal detection controller
End is connected with the control signal input of the first air blower.
8. a kind of power of alterating and direct current multi-function test stand according to claim 6, it is characterised in that：The generator drags platform
The first wind pressure flow detector is further included, the first wind pressure flow detector is arranged on the first air blower and high-speed induction motor
（7）Between air passage in, the detection signal of detection signal output part and the signal detection controller of the first wind pressure flow detector
Input terminal is connected, and the control signal output of signal detection controller is connected with the control signal input of the first air blower.
9. a kind of power of alterating and direct current multi-function test stand according to claim 6, it is characterised in that：The generator drags platform
Further include the second wind pressure flow detector, the second wind pressure flow detector be arranged on the second air blower and tested generator it
Between air passage in, the detection signal input part of detection signal output part and the signal detection controller of the second wind pressure flow detector
It is connected, the control signal output of signal detection controller is connected with the control signal input of the second air blower.
10. a kind of power of alterating and direct current multi-function test stand according to claim 1, it is characterised in that：Further include radiator,
Described radiator one end is connected with frequency converter control cabinet energization input, the control signal of the other end and the operation switch board
Input terminal is connected, and the radiator is to the operation switch board ventilation and heat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721629710.6U CN207424225U (en) | 2017-11-29 | 2017-11-29 | A kind of power of alterating and direct current multi-function test stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721629710.6U CN207424225U (en) | 2017-11-29 | 2017-11-29 | A kind of power of alterating and direct current multi-function test stand |
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| CN207424225U true CN207424225U (en) | 2018-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799410A (en) * | 2019-03-19 | 2019-05-24 | 西北工业大学 | Flight profile, mission profile control device, aircraft electrical power system integrated test system and method |
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2017
- 2017-11-29 CN CN201721629710.6U patent/CN207424225U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799410A (en) * | 2019-03-19 | 2019-05-24 | 西北工业大学 | Flight profile, mission profile control device, aircraft electrical power system integrated test system and method |
| CN109799410B (en) * | 2019-03-19 | 2021-03-26 | 西北工业大学 | Flight profile control device, and airplane power system comprehensive test system and method |
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