CN1967278A - Method and system for testing parameters of synchronization electric motor - Google Patents
Method and system for testing parameters of synchronization electric motor Download PDFInfo
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- CN1967278A CN1967278A CN 200610063328 CN200610063328A CN1967278A CN 1967278 A CN1967278 A CN 1967278A CN 200610063328 CN200610063328 CN 200610063328 CN 200610063328 A CN200610063328 A CN 200610063328A CN 1967278 A CN1967278 A CN 1967278A
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Abstract
The invention discloses a synchronous motor parameter testing method and device, solving the technical problems of real-time parameters testing for synchronous generator. The method of the invention includes the following steps: choice of identification method, loading initial data, establishment of the static exchange tests, sampling data, identification calculation. Its devices include sensors. Sensors, from the synchronous motor, capture analog signals, convert them into digital signals through data acquisition module, and transmit them to the computer. The invention, compared with the existing technologies and common equipment in data computing, graphics, data preservation, historical data analysis, implements the rapid automatic generator parameters identification. The invention overcomes the small storage capacity constraints of microprocessors. Device is connected to other computers through network interface. Users can do remote real-time monitoring of the operation or test parameters of the motor, print out chart and data with parallel port printer for kinds of analysis and research, only by a simple structure.
Description
Technical field
The present invention relates to method and device that a kind of electric system generating set detects, particularly a kind of method of testing device of large and medium generator parameter reaches.
Background technology
Synchronous generator is the major equipment of electric system, and the order of accuarcy of its circuit model parameter all has significant impact to the planning of electric system, operation, stability Calculation, control adjustment etc.Concerning generator is made producer, when dispatching from the factory, new unit need do " type approval test ", comprising measuring generator parameter,, check design parameter simultaneously so that offer the user.Synchronous motor was invented over more than 100 year, formed the conventional method of location parameter, as no-load test, three-phase shortcircuit test, three-phase sudden short circuit test, zero power factor test, two-phase alignment short-circuit test, two-phase short-circuit test, static AC test, direct current die-away test, voltage recover test, slippage test, extract rotor test etc. out.These test methods once can only measure one or several parameter, record many parameters, need do 10 tests, last the several months, and test period is long, the cost lot of manpower and material resources.Over nearly more than 20 years both at home and abroad to the generator parameter Research of measuring, mainly concentrate on two aspects: the one, ONLINE RECOGNITION adds a undesired signal under operation state of generator, make it produce a transient process, carry out curve fitting the parameter of identification generator under this state with computing machine; The 2nd, the static frequency response method applies the pumping signal of different frequency to the generator under the stationary state, by these pumping signals and response thereof, and the unsaturated parameter of identification generator.The influence of condition and equipment owing to be put to the test, its practical application all is very limited.
Summary of the invention
The purpose of this invention is to provide a kind of testing parameters of synchronous motor and device, the technical matters that solve is in real time easy fast and safely economic test synchronous generator parameter, improves speed of convergence, strengthens test function.
The present invention is by the following technical solutions: a kind of testing parameters of synchronous motor may further comprise the steps: one, determine to select the generator parameter recognition methods; Two, call in generator rating, the no-load voltage ratio of single-circuit transformer summation current transformer, stator winding resistance, the first Value Data of current attenuation that is stored in the hard disc of computer; Three, select to determine the static AC test; Four, the single-phase A-B of generator, B-C, C-A are connected, carry out sampled data; Five, the result is calculated and provides in identification.
Generator rating, the no-load voltage ratio of single-circuit transformer summation current transformer, stator winding resistance, the first Value Data of current attenuation that the present invention is stored in the hard disk are to be applied to adopt random trial method, carry out the random statistical test earlier, turn to the random direction optimizing again, obtain parameter to be asked.
Data sampling of the present invention is to generator voltage, electric current, power samples; During sampled data, the single-phase A-B of generator, B-C or C-A connected image data each time after, be temporarily stored in the data acquisition module, send pause instruction, manually carry out the commutation operation of generator wiring this moment, sample then next time, sampling finishes, and sends the identification computations.
It is by the circuit impedance connection in series-parallel that the present invention discerns Calculation Method, and the port Impedance that obtains calculating is asked for and calculated the poor of port Impedance and test port impedance, promptly resistance difference square add the reactance difference square, evolution acquisition again.
Method of the present invention provides the result and adopts the mode that is stored in the destination file, shows or print.
Method of the present invention is not if select generator parameter identification, of selecting ten individual event conventional generator attribute testings: no-load test, short-circuit test, zero power factor characteristic test, slippage test, zero sequence impedance test, the test of two-phase alignment, two-phase short-circuit test, voltage recover the interchange envelope test or the rotor temperature rise test of test, three-phase sudden short circuit test, alignment axis; The data of usefulness are calculated in input, behind the generator test data sampling, send computations, and computing machine carries out curve fitting, calculating parameter, obtain the result after, finish test.
A kind of testing parameters of synchronization electric motor device, described testing parameters of synchronization electric motor device comprises sensor, sensor converts digital signal from the simulating signal that synchronous motor obtains to by data acquisition module, is passed to computing machine.
Sensor sending and receiving motor additional power source of the present invention.
Sensor of the present invention is the voltage/current collector.
Voltage/current collector of the present invention is the voltage/current mutual inductor.
The present invention compared with prior art, the system core adopts the WINDOWS system, therefore on data operation, chart demonstration, data preservation, historical data analysis, compare with common identification instrument, very advantageous, realized fast automatic identification generator parameter, overcome and adopted the little restriction of microprocessor memory capacity, be connected with other computer in the LAN (Local Area Network) by network interface, can real-time monitor the various operations or the test parameters of motor at remote port, utilize the printer parallel port chart, data can be printed, be convenient to do various analyses and research, simple in structure.
Description of drawings
Fig. 1 is to use testing parameters of synchronization electric motor device link composition of the present invention.
Fig. 2 is data acquisition and the control flow chart of the inventive method embodiment.
Fig. 3 is the identification process figure of the inventive method embodiment.
Fig. 4 is the recognizer structured flowchart of testing parameters of synchronization electric motor device embodiment of the present invention.
Fig. 5 is parameter testing and the intelligent characteristic experiment process figure of the inventive method embodiment.
The direct-axis circuit model of the generator that Fig. 6-the 1st, the present invention use.
The quadrature circuit model of the generator that Fig. 6-the 2nd, the present invention use.
Fig. 7 is that the present invention exchanges envelope test-NPIS method key wiring diagram.
Fig. 8 is a direct current die-away test d-axis key wiring diagram of the present invention.
Fig. 9 is that direct current die-away test of the present invention is handed over the axle key wiring diagram.
Figure 10 is a stator direct current die-away curve of the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.As shown in Figure 1, testing parameters of synchronization electric motor device of the present invention, computing machine is connected with data acquisition module by the RS485 bus, data acquisition module connects the voltage/current transducer, voltage/current transducer sending and receiving motor additional power source obtains the signal that tested generator need be tested, and computing machine is connected with printing device, when computing machine is connected with other computing machine in the LAN (Local Area Network), but the various operations or the test parameters of remote real time monitoring motor.
As most preferred embodiment, testing parameters of synchronization electric motor device of the present invention, computing machine adopts notebook computer, is configured to P4-CPU, 1.64GH, 2MB, hard disk 40GB, 5400rpm, internal memory 256MB, DDR2,14.1 inches of LCD display, external connection keyboard and mouse, operating system adopts WINDOWSXP, and mainboard has network interface, USB port, printer parallel port, RS232 and RS485 port.Data acquisition module adopts ADAM4017+, and it is the voltage/current collector of 8 passages, can be exactly will+/-10V, 0～20mA analog signals change into and calculate the numerical information that function is discerned.Voltage transformation adopts YXY300V/7.07V, 0.1 the accurate voltage changer PT of level, current transformation adopts YXL5A/10V, and 0.1 grade of accurate power pack CT, voltage/current the transducer voltage/current signals of selsyn generator in the future convert 0～10V weak electric signal to.
The environment for use of testing parameters of synchronization electric motor device embodiment configuration of the present invention is: AC power supplies: 220V, and 50HZ is through being transformed to the DC power supply or adopting battery; Alternating voltage input signal≤300V; Alternating current input signal≤5A; Direct current die-away test input signal≤100mV; Environment for use temperature range: 0～45 ℃.
As Fig. 2 and shown in Figure 7, when doing the static AC test, measuring-signal is alternating voltage and electric current, generator is added alternating voltage reduces to＜300V through AT, electric current is reduced to＜5A through CT, respectively through voltage and power pack, is transformed to 0～10V light current and presses signal, be sent to analog quantity voltage/current data acquisition module then, through converter signal be passed to computing machine again.Make direct current die-away test, unloaded short-circuit test, zero power factor characteristic test, voltage recovery test, the test of two-phase alignment, two-phase short-circuit test, rotor temperature rise test, three-phase sudden short circuit test, gather the rotor of generator or the DC voltage/dc current signal of stator, adopt shunt, voltage divider or DC-isolation sensor, with generator actual DC DC signal transformation be＜light current of 100mV presses signal, be sent to data acquisition module, through converter signal be passed to computing machine again.Do the direct current die-away test, the short circuit stator winding provides control signal, is input to data acquisition module, and the data sampling that is used for starting decay DC passage is synchronous.
Present embodiment adopts the data acquisition module of 8 passages, has only used 5 passages in the reality, and remaining passage is standby for developing other test method(s) identification parameter, tests as the three-phase sudden short circuit test.
Shown in Fig. 6-1,6-2, a d-axis of generator (d axle) and friendship axle (q axle) circuit reduction are the resistance and the inductance link model of series, parallel, the parameter that testing parameters of synchronous motor of the present invention will be measured is exactly resistance and the reactance in the circuit, is called the basic parameter of generator.
As shown in Figure 7, from generator end add the 220-380V AC voltage, after single-circuit transformer AT and current transformer CT conversion, voltage＜300V, electric current＜5A is introduced to the former limit of voltage changer YXY and the power pack YXL of parameter of synchronous machine recognizer NPIS.
As shown in Figure 3, the voltage/current that draws spontaneous motor is after the AT/CT conversion, voltage＜300V and electric current＜5A, convert the weak signal of 0～10V to through the transducer YXY/YXL in the testing parameters of synchronization electric motor device, this signal is sent in the passage of data acquisition module, the CPU of computing machine controls it and communicates by data bus RS485 and data acquisition module in real time, promptly read the numerical information after the data acquisition module conversion in real time, leave among the hard disc data file DATA, also can graph mode be presented on the display or print as needs.To exchange the AC envelope test is that example specifies test process:
1. as shown in Figure 7, generator amature is static, the field copper short circuit, and three-phase stator winding A-B, B-C, C-A pass to single-phase AC voltage/electric current in turn;
2. the voltage that each time recorded for three times totally drops to＜300V through single-circuit transformer AT, and current signal drops to＜5A through current transformer CT, causes the voltage/current transducer in the recognizer, and the light current that is transformed to 0-10V is pressed signal;
3. the voltage/current signals with 0-10V is sent to data acquisition module, deliver to computing machine through conversion, computer initialization data acquisition module parameter, after receiving the signal of data acquisition module, read signal, and judge whether to convert to digital signal, if promptly store hard disk DATA file into, show at display by chart; If do not finish data-switching after reading signal, then return previous step and read again suddenly;
4. computing machine is got the data of measurement from reservoir, does to optimize identification and calculates: three single-phase tests by exchanging envelope test, can obtain three groups of voltages, electric current, power, and obtain three groups of resistance, reactance, thereby try to achieve d/q axle circuit model port Impedance Z
D0And Z
Q0On the other hand, the port Impedance Z that can obtain calculating is calculated in one group of basic parameter value of each branch road of delivery type circuit resistance, reactance at random by simple circuit impedance connection in series-parallel
DAnd Z
Q, ask for and calculate the poor of port Impedance and test port impedance, promptly resistance difference square add the reactance difference square, evolution again; Next step selects another group basic parameter value to ask for again at random and calculates port Impedance and error; Calculate again and again like this, Homes abandons the bigger basic parameter of error, keeps the basic parameter of error minimum, in the allowable value that error is being set, and satisfies the basic parameter value of constrained conditions set, is exactly the basic parameter that requires, and promptly separates.The picked at random parameter will be used randomizer, and it is a computer sub.The model of the parameter of electric machine and recognizer executive routine leave on the hard disc of computer, the data that the rating data of generator and other relevant calculation are used also are stored on the hard disk in advance, according to different test methods and data demand, before on-test, determine and by keyboard/CD input, automatically call during identification, calculate, try to achieve the basic parameter of generator at last, 7 d axle basic parameters are wherein arranged, 5 q axle basic parameters; Because Ra, the X1 of d axle and q axle are identical, so have only 10 independently basic parameters.That is:
Stator winding resistance Ra, stator winding leakage reactance X
l, d armature axis reaction reactance X
Ad, the field copper resistance R
Ffd, field copper leakage reactance X
Fdl, d axle damping winding resistance R
Ld, d axle damping winding leakage reactance X
LdlQ armature axis reaction reactance X
Aq, q axle damping winding resistance R
Lq, q axle damping winding leakage reactance X
Lql
5. by the synchronous motor theory, can obtain the relation of basic parameter and derived parameter, thereby calculate 14 derived parameters and time constant: be i.e. d axle synchronous reactance X
d, d axle transient state reactance X
d', d axle subtranient reactance X
d", the total reactance X of field copper
Ffd, the total reactance X of d damping winding
Lld, q axle synchronous reactance X
q, the total reactance X of q axle damping winding
Llq, q axle subtranient reactance X
q", negative sequence neactance X
2, field copper time constant T
D0, d axle transient state time constant T
d', d axle time transient state time constant T
d", the time constant T of d axle damping winding when stator winding and field copper are all opened a way
Ld0, the time constant T of q axle damping winding during the stator winding short circuit
q".Test needs 1 hour approximately, and identification calculating only needs several seconds.
6. form the test report file by the form of setting, store, show or print.
Owing to adopt WINDOWSXP operating system, therefore testing parameters of synchronization electric motor device of the present invention has been realized fast automatic identification generator parameter on data operation, chart demonstration, data preservation, historical data analysis.This device also can be connected with other computing machine in the LAN (Local Area Network) by network interface simultaneously, can real-time monitor the various operations or the test parameters of motor at far-end, utilizes the printer parallel port chart, data can be printed, and is convenient to do various analyses and research.
As shown in Figure 4, testing parameters of synchronization electric motor device of the present invention has adopted the notebook computer of P4-CPU, and operating personnel send the operation of instruction control I/O equipment, internal storage, arithmetical unit by keyboard/mouse.
As shown in Figure 5, testing parameters of synchronous motor of the present invention may further comprise the steps: one, start the testing parameters of synchronization electric motor device; Two, determine to select the generator parameter recognition methods; Three, call in generator rating, the no-load voltage ratio of single-circuit transformer AT summation current transformer CT, stator winding resistance, the first Value Data of current attenuation that is stored in the hard disk DATA file; Four, recognizer adopts random trial method, at first carry out the random statistical test, a reliable hunting zone that needs given parameter, in this scope, go to seek and separate preferably, for example, the reactance of armature reaction Xad of hydrogenerator, know that by rule of thumb its value probably equals 1, can given its scope be 0.7-1.05 just, be limited to 1.05 on it, be limited to 0.7 down; All the other parameters are similar given.The random statistical trial stretch also can be according to the design parameter value of generator, calls when being carried out by computing machine to form.Through keyboard/CD input, leave in the data file on the hard disk before the upper and lower limit of parameter and the design load test.Want given bound, import setting by testing crew before test, if desired, then computing machine is called in the upper and lower limit parameter from data file, otherwise calls in the generator parameter design load from data file DATA.Normal parameter testing is that the design load by generator parameter forms the random test scope, when design load is difficult to obtain, can be given the upper and lower limit of parameter reliably, in the scope of setting, at first carry out the random statistical test, obtain to separate preferably, turn to the random direction optimizing again; Five, select to determine the static AC test; Six, determine it is the static AC test, the relevant icon setting of available keyboard or click display, to the single-phase A-B of generator envelope test, B-C, C-A connects data (voltage each time, electric current, power) after the sampling, be temporarily stored in the data acquisition module, and manually send pause instruction, this moment, the workman carried out the commutation operation of generator wiring, sample then next time, sampling finishes, manually send the identification computations, device carries out sampled data to be handled, and delivers in the file of specifying DATA on the hard disc of computer, then discern calculating, from the hard disc data file, call and exchange the envelope test data, discern calculating, provide the result, be stored in the destination file, show simultaneously or print; As determining it is not the static AC test, direct current die-away test data just are set in advance: the ratings of generator, decay current initial value, parameter designing value or parameter bound, stator resistance in hard disk control data file, behind the data sampling, the computer Recognition device calls direct current die-away test data from the hard disc data file, be optimized identification and calculate, detailed process is:
1. as Fig. 8 or shown in Figure 9, generator amature is static, the field copper short circuit, and three-phase stator winding connects into stator and rotor alignment D axle or Q shaft experiment.
2. the K1 that closes a switch feeds DC current Io≤5% rated current in stator winding; The K2 that closes a switch disconnects K1 simultaneously, sends the control synchronizing signal to the decaying dc passage, the log-on data sampling, and as shown in figure 10, the stator current of direct current die-away curve IA (t) is attenuation state in time.
3. the DC deamplification of generator, through shunt become＜weak electric signal of 100mV delivers to data acquisition module, delivers to computing machine through conversion, be stored in hard disk and specify in the DATA file.
4. computer Recognition, from reservoir, get the data of measurement, being optimized identification calculates: the model of generator parameter and the fill order of recognizer leave in the hard disc of computer file, the data that the rating data of generator and other relevant calculation are used also are stored on the hard disk in advance, according to DC test method and data demand, before on-test, determine,, carry out the identification of direct current die-away test by CD or keyboard input.
As shown in figure 10, by static direct current DC die-away test, can try to achieve d-axis/friendship axle (d/q axle) stator current die-away curve IA (t); On the other hand, we can be by calculating another DC die-away curve, by the synchronous motor theory, this moment, the generator fundamental equation can be write as the state equation form, under the condition of given circuit parameter, given initial value Io, state equation has to be determined to separate, and separates state equation with 4 rank Runge-Kutta methods, draws the DC die-away curve IB (t) of a calculating.By difference side's sum (error) of trial curve and calculated curve, the fitting degree of calculated curve and trial curve is described, as two complete matches of curve, promptly error closely is zero, selected parameter promptly equals actual parameter, promptly separates.Calculate again and again, Homes goes bigger the separating of error, keeps separating of least error, up to the error minimum, and two complete matches of curve, and parameter satisfies constrained conditions set, just obtains d axle to be asked 7 basic parameters, i.e. optimum solutions.As shown in Figure 9, the wiring of change generator windings makes stator d axle aim at rotor q axle, and is similar with above-mentioned identifying, tries to achieve 5 basic parameters of q axle.Because the stator resistance Ra of d, q axle, stator leakage reactance X1 are identical, have 10 basic parameters: stator winding resistance Ra, stator winding leakage reactance X
l, d armature axis reaction reactance X
Ad, the field copper resistance R
Ffd, field copper leakage reactance X
Fdl, d axle damping winding resistance R
Ld, d axle damping winding leakage reactance X
LdlQ armature axis reaction reactance X
Aq, q axle damping winding resistance R
Lq, q axle damping winding leakage reactance X
Lql
5. by the synchronous motor theory, the relation of basic parameter and derived parameter be can obtain, 14 derived parameters and time constant provided thereby calculate: promptly
D axle synchronous reactance X
d, d axle transient state reactance X
d', d axle subtranient reactance X
d", the total reactance X of field copper
Ffd, the total reactance X of d damping winding
Lld, q axle synchronous reactance X
q, the total reactance X of q axle damping winding
Llq, q axle subtranient reactance X
q", negative sequence neactance X
2, field copper time constant T
D0, d axle transient state time constant T
d', d axle time transient state time constant T
d", the time constant T of d axle damping winding when stator winding and field copper are all opened a way
1d0, the time constant T of q axle damping winding during the stator winding short circuit
q".Test needs 1 hour approximately, and identification calculating only needs several seconds.
6. automatic form in accordance with regulations forms the test report file, storage, demonstration or printing.
Seven, finish test.
After starting the testing parameters of synchronization electric motor device, if do not select generator parameter identification, then according to the test that will do, select ten individual event conventional generator attribute testings in the control documents one: the interchange envelope test or the rotor temperature rise of no-load test, short-circuit test, zero power factor characteristic test, slippage test, zero sequence impedance test, the test of two-phase alignment, two-phase short-circuit test, voltage recovery test, three-phase sudden short circuit test, alignment axis are tested.The data of usefulness are calculated in input then, leave in the hard disc data file.Behind the generator test data sampling, send computations, computing machine carries out curve fitting, calculating parameter, obtain the result after, finish test.From the test data input, to data processing,, finish, so claim the intelligent characteristic test by computing machine to obtaining a result.
For example intelligent no-load characteristic test is keyed in control documents and is selected ' non-identification ' ' other tests ' ' 1 '.Sampled signal has rotor excitation current (DC) and stator voltage (AC) data, through shunt the exciting current signal is dropped to＜100mV is input to data acquisition module, stator voltage reduces the voltage to＜300V through single-circuit transformer AT, be input to YXY, be reduced to the 0-10V weak electric signal, be input to data acquisition module.Change exciting current Ifd, measure corresponding stator voltage Eo, need measure the 6-7 point so approximately, deliver to the data file storage of hard disc of computer again through conversion.A curve Eo=f (Ifd) who draws is a no-load characteristic; What got by sampling is one group of discrete point, and the identification calculation procedure has been prepared ' curve fitting subroutine ', utility function fitting technique, set up a multinomial model, represent with straight line, represent with a quafric curve at saturated section at straight-line segment, the N that records from no-load test organizes array, can determine the coefficient of quafric curve, and carry out curve fitting, obtain a level and smooth no-load characteristic Eo=f (Ifd) at last with least square method, show, or print, storage finishes test.As having done short-circuit test again, just can calculate direct-axis synchronous reactance Xd and short-circuit ratio SCR.The process of other tests, similar carrying out is the data difference of gathering, the deal with data difference.
Utilize method of the present invention,, try to achieve d axle synchronous reactance xd and short-circuit ratio SCR by unloaded short-circuit test; Try to achieve potier reactance Xp by zero load, short circuit, zero power factor test; Try to achieve d axle synchronous reactance xd and q axle synchronous reactance Xq by the slippage test; Try to achieve zero sequence resistance Ro and zero-sequence reactance Xo by the zero sequence impedance test; Try to achieve parameter X o, Ro by two-phase alignment short-circuit test; Try to achieve negative sequence neactance X2 by the two-phase short-circuit test; Try to achieve d axle subtranient reactance Xd by the quiet survey method of the AC of alignment axis " and q axle subtranient reactance Xq "; Try to achieve d axle subtranient reactance Xd by the three-phase sudden short circuit test ", d axle transient state reactance Xd ', d axle synchronous reactance xd, and time constant Tdo, Td ', Td "; Recover test by voltage and try to achieve d axle transient state reactance Xd ', time constant Tdo; Can do the rotor temperature rise test, provide rotor temperature rise T
cAfter obtaining the result, or show or print, storage, finish test.
Testing parameters of synchronous motor of the present invention can be measured ten basic parameters and 14 derived parameters and the time constant in synchronous motor d-axis/friendship axle (d/q axle) circuit model.Can enlarge and measure generator d axle parameter of saturation: under the stationary rotor state, in field copper, lead to into exciting current, make the d-axis magnetic circuit to state of saturation, according to the AC method of static testing, measure the D axle parameter of saturation under this state of saturation, the change exciting current promptly changes degree of saturation, measures another group parameter of saturation again.From changing the parameter X ad that exciting current Ifd records several times, can make an Xad=f (Ifd) curve.Parameter of saturation Xad during the generator actual motion just can find out from curve, only needs the magnetic potential of air gap (representing with Ifd) under definite this running status, finds corresponding Xad on curve.
Testing parameters of synchronization electric motor apparatus structure of the present invention is simple, and volume is little, and is in light weight, and CPU and hard disk storage capacity are big, can test the parameter of the synchronous motor of various capacity.Test method is simple, and personnel, unit and unit operation are not all had danger, and test speed is fast, model is accurate, good convergence, and antijamming capability is strong, single test can obtain whole parameters of tested generator, shortens the test duration greatly, and unit can put into operation early.Improve work efficiency, saved test energy consumption and other expense, instructed the unit capacity-increasing transformation, can receive very big economic benefit and social benefit.
Claims (10)
1. a testing parameters of synchronous motor may further comprise the steps: one, determine to select the generator parameter recognition methods; Two, call in generator rating, the no-load voltage ratio of single-circuit transformer summation current transformer, stator winding resistance, the first Value Data of current attenuation that is stored in the hard disc of computer; Three, select to determine the static AC test; Four, the single-phase A-B of generator, B-C, C-A are connected, carry out sampled data; Five, the result is calculated and provides in identification.
2. testing parameters of synchronous motor according to claim 1, it is characterized in that: described generator rating, the no-load voltage ratio of single-circuit transformer summation current transformer, stator winding resistance, the first Value Data of current attenuation that is stored in the hard disk is to be applied to adopt random trial method, carry out the random statistical test earlier, turn to the random direction optimizing again, obtain parameter to be asked.
3. testing parameters of synchronous motor according to claim 2 is characterized in that: described data sampling is to generator voltage, electric current, power samples; During sampled data, the single-phase A-B of generator, B-C or C-A connected image data each time after, be temporarily stored in the data acquisition module, send pause instruction, manually carry out the commutation operation of generator wiring this moment, sample then next time, sampling finishes, and sends the identification computations.
4. testing parameters of synchronous motor according to claim 3, it is characterized in that: described identification Calculation Method is by the circuit impedance connection in series-parallel, the port Impedance that obtains calculating, ask for and calculate the poor of port Impedance and test port impedance, be resistance difference square add the reactance difference square, evolution obtains again.
5. testing parameters of synchronous motor according to claim 4 is characterized in that: the described result of providing adopts the mode that is stored in the destination file, shows or print.
6. testing parameters of synchronous motor according to claim 1, it is characterized in that: described if do not select generator parameter identification, of selecting ten individual event conventional generator attribute testings: no-load test, short-circuit test, zero power factor characteristic test, slippage test, zero sequence impedance test, the test of two-phase alignment, two-phase short-circuit test, voltage recover the interchange envelope test or the rotor temperature rise test of test, three-phase sudden short circuit test, alignment axis; The data of usefulness are calculated in input, behind the generator test data sampling, send computations, and computing machine carries out curve fitting, calculating parameter, obtain the result after, finish test.
7. a testing parameters of synchronization electric motor device is characterized in that, described testing parameters of synchronization electric motor device comprises sensor, and sensor converts digital signal from the simulating signal that synchronous motor obtains to by data acquisition module, is passed to computing machine.
8. testing parameters of synchronization electric motor device according to claim 7 is characterized in that, described sensor sending and receiving motor additional power source.
9. testing parameters of synchronization electric motor device according to claim 8 is characterized in that, described sensor is the voltage/current collector.
10. testing parameters of synchronization electric motor device according to claim 9 is characterized in that, described voltage/current collector is the voltage/current mutual inductor.
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| CN102928778A (en) * | 2012-10-23 | 2013-02-13 | 中广核工程有限公司 | Starting comprehensive characteristic testing system of three-phase motor of nuclear power station |
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