CN107748339A - 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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- CN107748339A CN107748339A CN201711227871.7A CN201711227871A CN107748339A CN 107748339 A CN107748339 A CN 107748339A CN 201711227871 A CN201711227871 A CN 201711227871A CN 107748339 A CN107748339 A CN 107748339A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The invention discloses a kind of power of alterating and direct current multi-function test stand, including power distribution equipment, operational control cabinet, programmable power supply cabinet, frequency converter control cabinet, generator drags platform and load box, power distribution equipment output end is connected with programmable power supply cabinet input, programmable power supply cabinet output end is connected with frequency converter control cabinet energization input, frequency converter control cabinet output end is connected with generator dragging platform energization input, generator dragging platform output end is connected with operational control cabinet, operational control cabinet by bus respectively with programmable power supply cabinet, the control signal input of frequency converter control cabinet is connected, operational control cabinet is connected with load box input.The present invention 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 part have convertibility, and provided with complete internal detection interface, it is easy to search failure cause rapidly.
Description
Technical field
The present invention relates to a kind of power of alterating and direct current multi-function test stand.
Background technology
Aircraft operation has strict requirements to each part, it is necessary to is regularly overhauled, removed a hidden danger, just can guarantee that its safety
Operation, is typically detected to aircraft with testing stand, there is different testing stands for different components.Have much in aircraft
Side uses annex of double current generator, starter and generator etc., is both needed to often detect it.
Traditional electro-mechanical formula airplane power source testing stand, it is simple in construction, fault 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
It is manually operated, easily malfunction, it is higher to testing crew Capability Requirement, it is impossible to complete dynamic performance index analysis；Frequency conversion
Drawing type airplane power source testing stand is due to using gear speeder, needing the supporting cold lubricating system of complicated lubricating oil, increasing equipment
Volume and weight, and increase the difficulty of maintaining, can not still realize 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, set for important be tested such as generator
Standby, still using traditional operation display pattern, operating process is complicated, tests process not manageability.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of power of alterating and direct current multi-function test stand.
The purpose of the present invention is achieved through the following technical solutions：A kind of power of alterating and direct current multi-function test stand, including
Power distribution equipment, operational control cabinet, programmable power supply cabinet, frequency converter control cabinet, generator dragging platform and load box, it is described to match somebody with somebody Denso
Put output end with the programmable power supply cabinet input to be connected, the programmable power supply cabinet output end is powered with the frequency converter control cabinet
Input is connected, and frequency converter control cabinet output end is connected with generator dragging platform energization input, generator dragging platform output end
It is connected with operational control cabinet, operational control cabinet is defeated with the control signal of programmable power supply cabinet, frequency converter control cabinet respectively by bus
Enter end to be connected, operational control cabinet is connected with load box input.
The power distribution equipment includes power distribution cabinet and distribution box, and general supply controller, the distribution are provided with the power distribution cabinet
Alternating current is distributed to corresponding electrical equipment by case output three-phase alternating current to general supply controller, the general supply controller.
Some voltage output controllers, the alternating current warp of the general supply controller distribution are additionally provided with described power distribution cabinet
Voltage output controller is input to corresponding electrical equipment.
Phase sequence relay is additionally provided with described 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.
Match the friendship of connection in described distribution box with three overcurrent relays provided with three overcurrent relays and respectively
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 also includes some 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 described operational control cabinet, programmable power supply cabinet and
Load box.
The load box includes housing and is arranged on the movement circuit of enclosure interior, and the bottom of housing is provided with cold air
Entrance, the top of housing are provided with hot air outlet, are provided with screen pack 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
Measure protection circuit signal output part respectively with cooling fan interlock control circuit, load output protection circuit signal input part
Be connected, the control signal output of cooling fan interlock control circuit respectively with temperature survey protection circuit, load output protection
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 base and the frequency converter and high-speed induction motor that are arranged on base, 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 with described high-speed induction motor；
Generator dragging platform also includes the first air blower and the second air blower, the energization input of first air blower and
The frequency converter control cabinet is connected, and first air blower is by air channel to high-speed induction motor ventilation and heat, second drum
Blower fan is radiated by air channel to tested hydro-generator ventilation.
The generator dragging platform also includes signal detection controller and some temperature being arranged on high-speed induction motor
Detector, the detection signal output end of temperature monitor are connected with the detection signal input 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 also includes the first blast flow detector, and the first blast flow detector is arranged on
In air channel between first air blower and high-speed induction motor, the detection signal output end and signal of the first blast flow detector
The detection signal input 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 also includes the second blast flow detector, and the second blast flow detector is arranged on
In air channel between second air blower and tested generator, detection signal output end and the signal of the second blast flow detector are examined
The detection signal input 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 described power of alterating and direct current multi-function test stand also includes heat abstractor, described heat abstractor one end and frequency converter
Switch board energization input is connected, and the other end is connected with the operational control cabinet control signal input, the heat abstractor pair
The operational control cabinet ventilation and heat.
The beneficial effects of the invention are as follows：
1）Using test and maintenance integrative solution, using computer generalization test system, by airplane power source equipment performance
Test and actual repair work demand Combined design, realize that test is connected with the effective of maintenance, form unified test and maintenance
Mode of operation, the think of for proposing airplane power source power of alterating and direct current multi-function test stand synthesization structure creative first inside and outside army
Think.
2）Using computer integration control technology, motor drag, load control and experimental implementation process etc. are integrated
The control management of change, excellent human-computer interaction interface can be provided 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, it is large-scale to cancel fuel tank, oil pump, gear speeder etc.
Equipment, system architecture is simplified, reduce equipment volume and weight, reduced the difficulty of maintaining, improve 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 exceedes setting electric current, with regard to disconnecting the function protected of system input power.
5）Load box used is used to simulate aircraft electrical equipment, and the utilization of power load box that aircraft generator is sent is carried out
Consumption, the working characteristics of generator can be effectively verified, be easy to the later stage to carry out electrical parameter performance test and dimension to aircraft electrical equipment
Shield.
6）Complete machine uses modularized design, simple to operate, easy to maintenance；Can be according to customer requirement test voltage, electric current etc.
Parameter, the detection means of science is provided for high-power ac power equipment.
7）Generator dragging platform used can simulate the rotating speed of aircraft engine, to realize device miniaturization and being easy to army
Using operation, it, which is designed, directly drives the scheme of high-speed induction motor using frequency converter to realize the stepless time adjustment of motor, frequency conversion
Power of motor is 150kW, and the range of speeds can meet the test request of a variety of generators in 0~8500 rpm.
Brief description of the drawings
Fig. 1 is principle of the invention block diagram；
Fig. 2 is power distribution equipment theory diagram of the present invention；
Fig. 3 is load box structural representation of the present invention；
Fig. 4 is load box theory diagram of the present invention；
Fig. 5 is that generator of the present invention drags platform structural representation；
Fig. 6 is that generator of the present invention drags platform theory diagram；
In figure, 1- housings, 2- cool air inlets, 3- screen packs, 4- cooling fans, 5- hot air outlets, 6- bases, 7- changes at a high speed
Frequency motor, 8- shaft couplings.
Embodiment
Below in conjunction with embodiment, technical scheme is clearly and completely described, it is clear that described
Embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained on the premise of creative work is not paid, belong to what the present invention protected
Scope.
Refering to Fig. 1-6, the present invention provides a kind of technical scheme：As shown in figure 1, a kind of power of alterating and direct current multi-function test stand,
Including power distribution equipment, operational control cabinet, programmable power supply cabinet, frequency converter control cabinet, generator dragging platform and load box.External electricity
Source enter power distribution equipment after be separately input to frequency converter control cabinet, operational control cabinet, programmable power supply cabinet, generator dragging platform and
Load box.
As shown in Fig. 2 the power distribution equipment output end is connected with the programmable power supply cabinet input, 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, the power supply instruction of operational control cabinet.
The power distribution equipment includes power distribution cabinet and distribution box, and general supply controller, the distribution are provided with the power distribution cabinet
Alternating current is distributed to corresponding electrical equipment by case output three-phase alternating current to general supply controller, 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.
Some voltage output controllers are additionally provided with described 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, operational control cabinet, program-controlled electric
Source cabinet and load box.
The operational control cabinet passes through the bus control signal with the programmable power supply cabinet, the frequency converter control cabinet respectively
Input is connected.
The programmable power supply cabinet output end 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 with described 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 is 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 device 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 a part of management, display and protection, protects general supply controller
Hold normal operating conditions.
Match the friendship of connection in described distribution box with three overcurrent relays provided with three overcurrent relays and respectively
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 outside three-phase 380V/50Hz power inputs, overcurrent protective device is designed in inlet wire distribution box, i.e., in power supply
Three 0~9.99A overcurrent relay is introduced in three-phase alternating current, by matching somebody with somebody 50 outside:1 D.C mutual-inductor is realized when being
Any one phase current in system circuit is when exceeding setting electric current, the function of being protected with regard to disconnection system input power.
The power distribution equipment also includes some one-way safety isolating transformers, the single-phase electricity of the general supply controller distribution
Respectively operational control cabinet, programmable power supply cabinet and load box are distributed to through one-way safety isolating transformer, voltage output controller.
Insulation of the one-way safety isolating transformer by least corresponding to double insulation or reinforced insulation makes input winding and output
Winding is electrically separating, and single-phase electricity is transported into voltage output controller with ELV, voltage output controller is then pressed
Voltage is delivered to operational control cabinet, programmable power supply cabinet and load box according to the nominal parameter of electrical equipment.
Computer and adaptation unit are provided with the operational control cabinet, the operational control cabinet is the core of whole system
Part, is responsible for the integrated management of all experiment resources, and the operational control cabinet is designed using PXI bussing techniques to complete whole system
Function and performance test work.
The computer mainly include industrial computer, 1553B emulators, data acquisition module, data discrete control module with
And communication module etc..
The hardware interface of the computer supports hardware can be by PXI interfaces and AD capture cards, isolation and amplifier I/O cards, string
Mouth expansion card, 1553B boards are communicated；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 receive and transmission is confluxed
The order of bar 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 interface connection.
The data acquisition module mainly completes voltage, electric current, discrete switch amount, SRT and various power supplys letter
Number test.48 road acquisition channels, collection 0~5VDC signals per road, it can meet that millivolt signal gathers, be mainly used in collection 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 connected 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 stop 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 carrys out control relay coil, closes relay with regard to output signal, after
The closure of electric switch is come relay corresponding to controlling 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 act as carrying out
During power-supply system performance test, output current is to meet the different power supply requirement of tested department enclosure.
The operational control cabinet is connected with the load box input, as shown in figure 3, the load box include 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 provided with heat sky
Gas exports 5, is provided with screen pack 3 at the cool air inlet 2, cooling fan 4 is additionally provided with inside housing 1.
The screen pack 3 is used to filter the impurity in cold air, purifies cold air；Cooling fan 4 is located at element installation shape
Into heat dissipation wind channel in, caused heat during element manipulation is discharged outside casing so as to the unlikely damage of protection element.
In test job, the load box is blown into cold wind using the cool air inlet 2 from the bottom of housing 1, and the heat at top is empty
Gas outlet 5 suctions out hot blasts, realizes box house and outside heat exchange, and the heat of discharge is cold in the presence of cooling fan 4
But, so that whole box house radiating 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 single-phase 220V alternating current for load box, inside sets the current output terminal difference of Switching Power Supply
By controlling the power supply of detection circuit, relay contacts device assembly and temperature survey protection circuit, load output protection circuit defeated
Enter end to be connected, described power of alterating and direct current multi-function test stand load box also includes parameter display circuit, the parameter display circuit
Energization input be connected with the current output terminal of Switching Power Supply.
It is electric needed for the Switching Power Supply is parameter display circuit, control detection circuit and relay contacts device assembly provide
Energy；Signal input part of the described 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 and 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
Automatically adjust, safeguard protection, the effect such as change-over circuit.
The signal output part of the temperature survey protection circuit is protected with cooling fan interlock control circuit, load output respectively
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 the temperature change of protection 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.
Single-phase 220V alternating current is directly inputted to cooling fan interlock control circuit to provide required electric energy, radiating
The control signal output of interlock of fan control circuit respectively with temperature survey protection circuit, load output protection circuit control
Signal input part is connected.Temperature change is fed back to temperature survey protection circuit by cooling fan interlock control circuit, load exports
Protection circuit, so as to ensure that component is always worked within the scope of safe temperature；Described cooling fan interlock control circuit
It is connected with cooling fan unit, necessary requirement is provided for radiating work.
The signal output part of the load output protection circuit is controlled with temperature survey protection circuit, cooling fan interlocking respectively
Circuit processed is connected with the signal input part of RLC load arrays.The signal output part of described 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
Carry output protection circuit and be provided with load output interface, beneficial to the receiving efficiency for improving equipment when data latch.
The frequency converter control cabinet output end is connected with generator dragging platform energization input, generator dragging platform output end
It is connected with operational control cabinet.
As shown in figure 5, the generator dragging platform includes base 6 and the frequency converter being arranged on base 6 and high speed frequency conversion
Motor 7.
Described high-speed induction motor 7 combines the advantages of high-speed electric expreess locomotive and variable-frequency motor, high-speed electric expreess locomotive small volume,
It can be joined directly together with high speed load so as to save traditional machinery speed increasing device, drive system is improved while reducing system noise
Efficiency, its magnetic flux frequency being 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, connected with 100% nominal load in the range of 10% ~ 100% normal speed
Reforwarding row, motor of the temperature rise not over motor demarcation feasible value.Both combinations can improve high-speed induction motor 7 efficiency and
Heating property, it is set to more conform in the technical requirements of dragging platform.
Electromagnetic brake is installed, electromagnetic brake makes the fortune in high-speed induction motor 7 on described high-speed induction motor 7
Moving part stops or slowed down, main in the transmission system in high-speed induction motor 7 to play passing power and control motion etc., it
High-speed induction motor 7 is braked by the interaction force between magnetic pole and magnetic pole, there is compact-sized, simple 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, frequency gathering frequency converter realizes high speed variable-frequency electric by way of being multiplied by multiplying power
The real-time rotating speed collection of machine 7, realizes the miniaturization of equipment, is easy to the use of army to operate.
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
Survey in the power train process of generator, shaft coupling 8 plays a part 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 also 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 channel to the ventilation and heat of high-speed induction motor 7, described the
Two air blowers are radiated by air channel to tested hydro-generator ventilation.Preferably, the air channel wants short and straight, and turn will be lacked.Because
When physical dimension is unaffected, increase air channel area can reduce the pressure loss, while can reduce the noise of air blower.
Described power of alterating and direct current multi-function test stand generator dragging platform also includes signal detection controller and some settings
Temperature monitor on high-speed induction motor 7, the detection signal output end of temperature monitor and the inspection of signal detection controller
Survey 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 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 transmission and feedback operation.
Described power of alterating and direct current multi-function test stand generator dragging platform also includes the first blast flow detector, and described the
One blast flow detector is arranged in the air channel between the first air blower and high-speed induction motor 7, the first blast flow detection
The detection signal output end of device is connected with the detection signal input of signal detection controller, the control letter of signal detection controller
Number output end 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 also includes the second blast flow detector, and described the
Two blast flow detectors are arranged in the air channel between the second air blower and tested generator, the second blast flow detector
Detection signal output end is connected with the detection signal input of signal detection controller, and the control signal of signal detection controller is defeated
Go out end with the control signal input of the second air blower to be connected.
The data that the analysis blast flow detector transmission of signal detection controller comes, are then controlled to air blower, adjust
Wind speed of blast blower size is saved, has the function that to adjust high-speed induction motor 7 and tested generator-temperature detection, so that entirely dragging platform
It is maintained in normal temperature range and works.
A kind of described power of alterating and direct current multi-function test stand also includes heat abstractor, described heat abstractor one end and frequency converter
Switch board energization input is connected, and the other end is connected with the operational control cabinet control signal input, the heat abstractor pair
The operational control cabinet ventilation and heat.
The frequency converter control cabinet is mainly used in 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 conventional mechanical system regulating flow is greatly reduced, described heat abstractor output end is also respectively with exchanging
Generator is connected with operational control cabinet, is continuously alternating current generator and operational control cabinet is radiated, avoid both equipment because
Temperature is too high and damages.
The power supply of whole testing stand is all drawn by the power distribution equipment, the control using the operational control cabinet as entirety
Center.The power supply of whole testing stand is 380V/50Hz three-phase four-wire systems, power supply capacity 150kVA, and the power supply 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 whole testing stand, load box and the single-phase 220V of programmable power supply cabinet offer
Voltage.Operational control cabinet by bus marco frequency converter, and then realizes the control of the generator dragging platform as control centre
System, by bus marco programmable power supply, realizes the automatic management of whole pilot system power supply, is manipulated by inside cabinet
Digital output modul, the Automated condtrol of the load box load is realized, meanwhile, operational control cabinet is also the connection behaviour of equipment under test
Make platform, there is provided the connectivity port of all power-supply system department enclosures in addition to generator.
For the variable-frequency control technique employed in the present invention, what the present invention also suited measures to local conditions takes corresponding scheme,
Particular problem and solution method are as follows：
1）The electromagnetic interference and countermeasure directly conducted by power supply
Frequency converter can make to produce higher hamonic wave in the electric power system of testing stand at work, to being connected to same power-supply system
Electrical equipment produces interference, such as：Controller, industrial computer etc..Set solution countermeasure mainly carries out isolation work：One
It is to be powered by using isolating transformer to industrial computer, control power supply, signal power source etc..Second, all using having
The measuring cell and control element of physical isolation and Phototube Coupling, the high frequency proximity switch used such as generator speed measurement.
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.）Produce direct-coupling interference.
Solution mainly carries out grounding design work：First, the signal ground of system is strictly divided with the ground of frequency converter and dragging motor
Open.Second, signal line uses multipoint earthing form, each earth point in signal system is all directly connected to nearest apart from it
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 do more
Work, such as using superposed average, singular value screening, digital filtering, filter out and shake scheduling algorithm and method.Fourth, in some analog quantitys
The input of 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.）Caused interference.Frequency converter
PWM technologies, the high speed switching of solid switch device are used mostly in inverter bridge（Du/dt is up to more than 1kV/us）Caused spoke
It is quite prominent to penetrate interference problem, can be by space to the powerful electromagnetic wave of external radiation.Its radiation field intensity depends on interference source
Current strength and tranmitting frequency etc..For this problem, the solution of the present invention be to the frequency converter individually do one it is totally-enclosed
Metal safe carries out corresponding signal shielding.To improve the antijamming capability of observing and controlling, from the change with input and output filter
Frequency device, the observing and controlling power supply of electrical source of power are carried out electrical isolation using isolating transformer, become using the electric signal with isolation features
Send device, for measurement circuit using measures such as effective shielding, ground connection and hardware filterings, it is anti-interference etc. various that software carries out a variety of numerals
Technology, ensure 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, blast flow detector are existing structure, and therefore, the concrete structure of above-mentioned various pieces just no longer repeats one by one, this
This hair can be achieved on the basis of the goal of the invention and technical scheme of the present invention is understood, with reference to prior art in art personnel
It is bright.
Described above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, the exclusion to other embodiment is not to be taken as, and can be used for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change does not depart from the spirit and scope of the present invention, then all should be in the protection domain of appended claims of the present invention
It is interior.
Claims (10)
- A kind of 1. power of alterating and direct current multi-function test stand, it is characterised in that：Including power distribution equipment, operational control cabinet, programmable power supply cabinet, Frequency converter control cabinet, generator dragging platform and load box, the power distribution equipment output end and the programmable power supply cabinet input It is connected, the programmable power supply cabinet output end is connected with the frequency converter control cabinet energization input, frequency converter control cabinet output end It is connected with generator dragging platform energization input, generator dragging platform output end is connected with operational control cabinet, and operational control cabinet leads to Cross control signal input of the bus respectively with programmable power supply cabinet, frequency converter control cabinet to be connected, operational control cabinet and load box are defeated Enter end to be connected.
- A kind of 2. 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 provided 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；Some voltage output controllers are additionally provided with described 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 with described 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；Exchanging for being connected in described distribution box provided with three overcurrent relays and respectively with three overcurrent relay matchings is mutual 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.
- A kind of 3. 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 Some 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 described operational control cabinet, programmable power supply cabinet and load box.
- A kind of 4. 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 provided with hot air outlet（5）, the cool air inlet（2）Place is provided with screen pack（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 The signal output part of protection circuit 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, load the signal output part of output protection circuit respectively with temperature survey protection circuit, dissipate Air-heater interlock control circuit is connected with the signal input part of RLC load arrays.
- A kind of 5. power of alterating and direct current multi-function test stand according to claim 1, it is characterised in that：The generator drags platform Including base（6）Be arranged on base（6）On frequency converter and high-speed induction motor（7）, the frequency converter and high speed variable-frequency electric Machine（7）Realize that signal connects, the high-speed induction motor（7）Pass through shaft coupling（8）Realize and link with tested generator, it is described High-speed induction motor（7）On be also equipped with electromagnetic brake.
- A kind of 6. power of alterating and direct current multi-function test stand according to claim 5, it is characterised in that：The generator drags platform Also 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 channel to high-speed induction motor（7）Ventilation and heat, second air blower is by air channel to quilt Survey hydro-generator ventilation radiating.
- A kind of 7. power of alterating and direct current multi-function test stand according to claim 6, it is characterised in that：The generator drags platform Also include signal detection controller and some be arranged on high-speed induction motor（7）On temperature monitor, the inspection of temperature monitor Survey signal output part with the detection signal input 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.
- A kind of 8. power of alterating and direct current multi-function test stand according to claim 6, it is characterised in that：The generator drags platform Also include the first blast flow detector, the first blast flow detector is arranged on the first air blower and high-speed induction motor （7）Between air channel in, the detection signal output end of the first blast flow detector and the detection signal of signal detection controller Input is connected, and the control signal output of signal detection controller is connected with the control signal input of the first air blower.
- A kind of 9. power of alterating and direct current multi-function test stand according to claim 6, it is characterised in that：The generator drags platform Also include the second blast flow detector, the second blast flow detector be arranged on the second air blower and tested generator it Between air channel in, the detection signal output end of the second blast flow detector and the detection signal input of signal detection controller It is connected, the control signal output of signal detection controller is connected with the control signal input of the second air blower.
- A kind of 10. power of alterating and direct current multi-function test stand according to claim 1, it is characterised in that：Also include heat abstractor, Described heat abstractor one end is connected with frequency converter control cabinet energization input, the control signal of the other end and the operational control cabinet Input is connected, and the heat abstractor is to the operational control cabinet ventilation and heat.
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| CN201711227871.7A CN107748339A (en) | 2017-11-29 | 2017-11-29 | A kind of power of alterating and direct current multi-function test stand |
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| CN201711227871.7A CN107748339A (en) | 2017-11-29 | 2017-11-29 | A kind of power of alterating and direct current multi-function test stand |
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| CN201711227871.7A Pending CN107748339A (en) | 2017-11-29 | 2017-11-29 | A kind of power of alterating and direct current multi-function test stand |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110426585A (en) * | 2019-08-15 | 2019-11-08 | 东莞市赐而得自动化科技有限公司 | Electronic product reliability test macro |
| CN110907847A (en) * | 2019-11-12 | 2020-03-24 | 深圳龙电电气股份有限公司 | Power supply detection circuit and method compatible with three-phase three-wire and three-phase four-wire |
| CN111042914A (en) * | 2019-12-16 | 2020-04-21 | 刘生 | Generating set with frequency converter |
| CN115327285A (en) * | 2022-10-17 | 2022-11-11 | 山东天鲲电力科技有限公司 | Power distribution cabinet delivery power performance inspection system |
| WO2024109354A1 (en) * | 2022-11-24 | 2024-05-30 | 西安爱生技术集团有限公司 | Ground unmanned aerial vehicle power supply network testing system and testing method |
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| CN111042914A (en) * | 2019-12-16 | 2020-04-21 | 刘生 | Generating set with frequency converter |
| CN115327285A (en) * | 2022-10-17 | 2022-11-11 | 山东天鲲电力科技有限公司 | Power distribution cabinet delivery power performance inspection system |
| WO2024109354A1 (en) * | 2022-11-24 | 2024-05-30 | 西安爱生技术集团有限公司 | Ground unmanned aerial vehicle power supply network testing system and testing method |
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