CN201514447U - Integral test device of main transformer of electric locomotive - Google Patents
Integral test device of main transformer of electric locomotive Download PDFInfo
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- CN201514447U CN201514447U CN2009200658754U CN200920065875U CN201514447U CN 201514447 U CN201514447 U CN 201514447U CN 2009200658754 U CN2009200658754 U CN 2009200658754U CN 200920065875 U CN200920065875 U CN 200920065875U CN 201514447 U CN201514447 U CN 201514447U
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Abstract
The utility model provides an integral test device of a main transformer of an electric locomotive, which is characterized in that the integral test device of the main transformer of the electric locomotive comprises an industrial control computer, a PLC, a main circuit and a test product, wherein the industrial control computer, the PLC, the main circuit and the test product are sequentially connected in series, a protection circuit is also arranged between the industrial control computer and the main circuit, and the main circuit consists of a power supply switch cabinet, a low-voltage switch cabinet, a high-voltage switch cabinet, a voltage regulator, a test transformer and a voltage current transformer. The utility model can be used for the on-line test and the early warning on the integral state of a traction transformer for ensuring the normality of each index of the traction transformer and the reliable operation.
Description
Technical field
The utility model belongs to electric locomotive equipment monitoring technique field, is specifically related to a kind of electric locomotive main transformer comprehensive test device.
Background technology
The test event of electric locomotive transformer is many, and has control corresponding to require and different control accuracies.Past adopts auxiliary reclay and contactor control to realize the adjusting and the conversion of experiment power supply on system architecture always, equipment volume is huge, the failure rate height, be difficult to satisfy the requirement of experimental test, because this system architecture must be used manual control and adjusting, so also be difficult in test warranty test result's science.And the transformer testing system is to the power requirement height, and the operation of 8 cover power supplys not only has the high-voltage great-current power-supply system in process of the test, also has voltage stabilizing and steady flow system, and operation logic is very complicated.Therefore, if adopt artificial relay control, not only inefficiency, systems bulky, fund input are big, and are difficult to reach the control requirement.
Therefore, be necessary the test macro of existing power locomotive transformer is improved.
The utility model content
Technical problem to be solved in the utility model has provided a kind of electric locomotive main transformer comprehensive test device, and this system can carry out comprehensive on-line testing and early warning for tractive transformer, and is normal, reliable to ensure the every index of tractive transformer.
For achieving the above object, the technical solution of the utility model is:
A kind of electric locomotive main transformer comprehensive test device is characterized in that, comprises industrial computer, PLC, main circuit and test product, and described industrial computer, PLC, main circuit and test product are connected in series successively; Also be provided with holding circuit between described industrial computer and the main circuit; Described main circuit is made up of power switch cabinet, low-tension switch cabinet, high-tension switch cabinet, pressure regulator, testing transformer and voltage current transformer.
The beneficial effect that the utlity model has is:
This device can carry out comprehensive on-line testing and early warning for tractive transformer, and is normal, reliable to ensure the every index of tractive transformer.This device makes that the device operation is more stable, the test better effects if by power supply design, ground connection design and Anti-interference Design.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is the power control system theory diagram.
Embodiment
As shown in Figure 1, a kind of electric locomotive main transformer comprehensive test device is characterized in that, comprises industrial computer, PLC, main circuit and test product, and described industrial computer, PLC, main circuit and test product are connected in series successively; Also be provided with holding circuit between described industrial computer and the main circuit; Described main circuit is made up of power switch cabinet, low-tension switch cabinet, high-tension switch cabinet, pressure regulator, testing transformer and voltage current transformer.
Electric locomotive main transformer integration test and trouble-shooter are control with the industrial control computer; measure and the protection center; can finish the test of 12 projects of general transformer; it is the winding D.C. resistance test; the connection set test; megger test; the test of transformer oil dielectric strength; no-load characteristic measurement; the load characteristic test; the induction voltage-withstand test; the test of 10KV industrial frequency withstand voltage; the test of 100KV industrial frequency withstand voltage; test of reactor characteristic test current transformer characteristic and cooling system test; adopt simulation to isolate; technology such as suspension and shielding solve measurement and the protection problem of this control system when test product puncture or flashover, and actual motion is safe and reliable.Powerful computer data processing power makes system have functions such as the record of the control of user's initializing set, process of the test and demonstration, test findings and output.
Control system is core with the industrial computer.On close friend's man-machine dialog interface, carry out initializing set.Industrial computer is exported a series of control commands after receiving the order that begins to test, and drives major loop by logic control circuit and finishes the test routine of having set; In the process of the test by metering circuit monitoring in real time with show work on the spot situation and trial voltage and electric current, perceive pilot system and can intelligently analyze and judge and reach a conclusion when unusual, handle by holding circuit.Test findings people can not artificially revise for setting automatic preservation for the sixth of the twelve Earthly Branches, but the automatic or manual printout.
Main circuit is made up of power switch cabinet, low-tension switch cabinet, high-tension switch cabinet, pressure regulator, testing transformer and voltage current transformer etc.; the superpotential that occurs during the test product flashover may the damage test transformer and the interior insulation of test product; so designed in the major loop protective device open can be when the test product flashover snap action; cut off main circuit, automatically all pressure regulator voltage drops are as low as zero a little simultaneously.
Wherein industrial computer is configured to:
Model: IPC-610P/PCA-6187VE;
CPU：P4-4.3G；
Internal memory: 512M;
Hard disk: 80G;
Function card: 8 serial port board 4066R.
The control of PLC system
In the test of electric locomotive transformer, pilot project is many, the hookup complexity, for malfunction and the abnormal conditions of operating personnel in preventing to test take place, complicated steering logic must be set when experiment power supply action and conversion, the realization of these logics used to be adopted auxiliary reclay interlocking or self-locking method, causes equipment volume big, and maintenance load is big.We at labor on the basis of transformer test power supply action and conversion logic, adopt the PLC system to replace auxiliary reclay in the past on the one hand, adopt software programming logical interlock and self-locking, significantly reduced equipment volume, make experiment power supply control and conversion logic more accurately with rationally, make full use of the PLC system hardware on the other hand, software resource, designed the power supply status supervisory system of energy real time monitoring experiment power supply duty, use this cover system, can most clearly observe the duty of power-supply system by industrial computer, also indication fault loop and abort situation intuitively when power-supply system breaks down.Improved the reliability of power-supply system work widely based on the use of PLC control system.
In transformer test, have new car test, greatly repair test, gently repair greatly test, semi-manufacture are tested and types such as research test, therefore, the design of a whole set of control system except that mainly towards the new car test automatically the test, go back demand side to the test that repairs greatly, light overhaul test, semi-manufacture are tested and the manual test of other types such as research test.Control system automatic/hand control switching is controlled by action button, when action button during in automatic position, the instruction that host computer sends by serial ports is only accepted in the action of PLC system, the action situation of contactor in the power-supply system, the PLC system is also by serial ports loopback computing machine, at this moment, all control knobs of other on the operator's console all are in the conductively-closed state; When action button during in manual position, PLC closes serial ports, a scan operation platform control knob.
Because the duty of all contactors all is transmitted back to the input port of PLC in the power-supply system, therefore, the duty of power-supply system can very clearly reflect by PLC, in testing automatically, these information all are sent on the computing machine by PLC, when the system works fault, engineering technical personnel can be exactly to localization of fault from the computer screen, also can find out fault loop by the pilot lamp on the operator's console, this design has played important directive function to the maintenance that engineering technical personnel carry out pilot system.
PLC is configured to:
CPU：S7-200?226；
Expansion module: EM223+EM211.
The power supply of pilot system
(1) basic demand:
The test event of electric locomotive transformer is many, and has control corresponding to require and different control accuracies.Past adopts auxiliary reclay and contactor control to realize the adjusting and the conversion of experiment power supply on system architecture always, equipment volume is huge, the failure rate height, be difficult to satisfy the requirement of experimental test, because this system architecture must be used manual control and adjusting, so also be difficult in test warranty test result's science.We have carried out comprehensive analysis and research to the power requirement of transformer testing system, and the operation of 8 cover power supplys not only has the high-voltage great-current power-supply system in process of the test, also has voltage stabilizing and steady flow system, and operation logic is very complicated.Therefore, if adopt artificial relay control, not only inefficiency, systems bulky, fund input are big, and are difficult to reach the control requirement.
(2) formation of experiment power supply system
Experiment power supply and control system mainly are when transformer is tested, for transformer and accessory thereof provide stable power, and according to testing requirements power supply is changed automatically and controlled under different operating conditions and running status, to satisfy the requirement of data test.In order to realize controlling requirement, make things convenient for master operating station and switch board and on-the-spot operation, and can realize combined network communication with the administration and supervision authorities host computer of master operating station, system is designed to a network control system with experiment power supply, as shown in Figure 2.Its operational management layer is made up of with PLC (S7-200) industrial computer (IPC-610P), and controlled stage comprises No-load Test of Transformer power-supply system, load test power-supply system, induction intermediate frequency withstand voltage test power-supply system, 10KV power frequency withstand test power-supply system, 100KV power frequency withstand test power-supply system, reactor and power compensator experiment power supply system, current transformer experiment power supply system, cooling system experiment power supply system.Computing machine is by network and PLC communication, transmit the operational factor of power-supply system, and get in touch by fieldbus and key-course detection system, carry out monitor management, the multistage network control power-supply system that constitutes thus, for the experiment of electric locomotive transformer provides good experimental enviroment, satisfied test and control requirement, improved the automaticity and the work efficiency of whole test system.
In system design, adopt industrial computer and PLC to form the monitor management system, can realize control and conversion easily to the various running statuses of power-supply system.
(3) power-supply system parameter designing
According to national standard and the requirement of electric locomotive main transformer test program rules, we conclude the transformer test power-supply system and classify, and are main according to being to the requirement and the mode of connection of power supply capacity in the test.Because these two of transformer load test and reactor inductance pH-value determination pHs are tested required power supply capacity maximums in test, therefore, these two tests are classified as a class, simultaneously, consider that the test of the electric pressure of No-load Test of Transformer and the mode of connection and transformer load is quite similar, so the power-supply system of No-load Test of Transformer also is classified as this class.Another kind of induced over voltage withstand test, 10KV power frequency withstand test, the 100KV power frequency withstand test summation current transformer of mainly comprising tested, this class test common feature is or big voltage or big electric current, the capacity of power supply is less, when carrying out this class test, dangerous on the one hand big, be big on the other hand, so these power supplys should be placed from master control system far and also away from operating personnel's place to the electromagnetic interference (EMI) of control system.It is exactly instrument test that one class is arranged again, as direct current resistance test, megger test, the test of no-load voltage ratio group and the test of transformer oil dielectric strength, because instrument test only needs the 220V power frequency supply, therefore, as long as on operator's console, arrange a supply socket just can satisfy testing requirements.
Be in test the rising and the decline rate of adjusting or deboost, electric current, the pressure regulation motor of induction voltage regulator adopts Frequency Converter Control, its benchmark controlled frequency is 30Hz, the testing transformer secondary is designed to double-winding structure, and double winding can become serial or parallel connection according to the manual control linkage of concrete condition of test.The main circuit parameter is:
Single-phase induction regulator: 800KVA, 380V/0-625V;
Pressure regulation motor (three-phase): 750W, 380V;
Testing transformer: 800KVA, 625V/2 * 2000V;
Frequency converter (three-phase): 1.1KW, 0-50Hz.
(4) withstand voltage, the industrial frequency withstand voltage of induction, current transformer experiment power supply system
Induced over voltage withstand test, 10KV power frequency withstand test, 100KV power frequency withstand test voltage are higher, and electric current is less, and the current transformer test current is bigger, and voltage is very low.
Be in test the rising and the decline rate of adjusting or deboost, electric current, the pressure regulation motor of induction voltage regulator adopts Frequency Converter Control, and its benchmark controlled frequency is 30Hz.The main circuit parameter is:
Single-phase induction regulator: 100KVA, 380V/0-400V;
Frequency converter (three-phase): 1.1KW, 0-50Hz;
Frequency tripling generator: 30KVA, 0-3000V;
Step-up transformer 1:10KVA, 220V/0-10KV;
Step-up transformer 2:5KVA, 220V/0-100KV;
Strong current generator: 20KVA, 220V/10V/2000A.
System's Anti-interference Design
In the electric locomotive main transformer test, there are a lot of tests to belong to big electric current or high-voltage test project, when carrying out these tests, electric locomotive main transformer and test circuit will produce stronger electromagnetic interference (EMI) to control system and testing tool, by all means TT﹠C system is worked the mischief, make TT﹠C system working signal confusion, can make control system botch routines when situation is serious, also can seriously influence simultaneously the reading of instrument, therefore, when system design, just consider these factors fully, adopt an effective measure from the hardware technology aspect because of this, reach the purpose that weakens or eliminate interference, improve the stability and the reliability of TT﹠C system work.Adopted following technology to eliminate electromagnetic interference (EMI) again in the native system:
1. shield technology
Two kinds of shield technologies of passive electric shield and low frequency magnetic shielding in native system, have been adopted.
(1) passive electric shield
Shielding is to be closed with the zone that the shield that certain conductive material or permeability magnetic material are made will need to protect, and forms electromagnetic isolation, reaches a kind of technology that intercepts or reduce the electromagnetic energy propagation, and shielding is to suppress one of effective measures of electromagnetic interference (EMI).What adopt in native system is the passive screening method, is about to all Electric Appliance Cabinets and all gets up with casing sealing, in order to prevent direct or indirect electrostatic coupling, guarantees shield effectiveness, and all Electric Appliance Cabinet shells all carry out reliable ground.
(2) low frequency magnetic shielding
The low frequency magnetic shielding is a high magnetic conductivity of utilizing ferromagnetic material, has the characteristic of by-passing to realize shielding to magnetic field, reaches the protection magnetosensitive device and is not subjected to the interference of low frequency magnetic field or prevents that the magnetic interference source from producing the purpose that magnetic leakage influences to its external environment.Except that adopting passive electric shield mode to reach the purpose of low frequency magnetic shielding, all connecting lines all adopt the shielding line of all size in native system, to guarantee that the magnetic interference source produces the magnetic leakage influence to its external environment and is limited in the very little scope.
2. filtering technique
The basic purposes of filtering technique is to select signal and suppress to disturb, and realizes that these two kinds of difference in functionalitys are that the circuit that target designs is called signal selective filter and Electromagnetic interference filter.In native system, adopt Electromagnetic interference filter to be implemented in power circuit, function circuit, control circuit and the change-over circuit, suppress interference along these circuit.
The EMI power-supply filter is a kind of of Electromagnetic interference filter, the low-pass filter that it is made up of inductance, electric capacity, and it allows the signal of direct current or 50Hz to pass through, and other signal and the undesired signal higher to frequency have bigger attenuation.Because undesired signal has two kinds of differential mode and common modes, so power-supply filter requires that these two kinds of interference are all had good attenuation.EMI power-supply filter essence is the LC passive network, and it utilizes the principle of impedance mismatching, and the filter effect that makes electromagnetic interference signal obtain attentuating filter depends on the degree of impedance mismatching, impedance difference big more (adaptive big more), and the filter effect of wave filter is good more.In order to obtain filter effect preferably, should use the high wave filter of input impedance to the low impedance power side, and, then should use the wave filter of low output impedance for the load-side of high input impedance.
Regulation according to CISPR makes R
S/ R
L=50 Ω/50 Ω, wherein R
SRepresented source impedance, R
LRepresented loaded impedance.
Can insert loss and differential mode insertion loss expression formula selective filter parameter according to common mode, make the insertion loss of wave filter reach satisfied numerical value.
3, grounding technology
Grounding technology is one of important method that prevents electromagnetic interference (EMI), increase electronic equipment Electromagnetic Compatibility.Ground connection is the special case of overlap joint, and is appropriate if earthing method uses, and the external interference that both can minimizing equipment produces can make equipment avoid extraneous interference again.Native system has adopted two kinds of grounding measures, protective ground and signal grounds in design.
Protective ground is meant casing and shielding layer grounding, and the purpose of protective ground is to prevent to cause personal injury owing to electric charge accumulation, voltage rise on casing or the screen layer, or causes the discharge of cremating, and causes high frequency interference and causes damage to equipment.In transformer test, all need test product and testing equipment good earth as power frequency withstand test and Medium frequency induction withstand voltage test.
Signal ground mainly contains two kinds of earthing modes: single-point grounding and multipoint earthing, consider the concrete condition of testing the place, and system has adopted the multipoint earthing mode in the signal ground design.
By adopting above system's Anti-Jamming Technique, the Electro Magnetic Compatibility of system is good, and in test macro work, all instrument, equipment and computer working are normal, and read out instrument shows stable, has reached purpose of design.
Claims (1)
1. an electric locomotive main transformer comprehensive test device is characterized in that, comprises industrial computer, PLC, main circuit and test product, and described industrial computer, PLC, main circuit and test product are connected in series successively; Also be provided with holding circuit between described industrial computer and the main circuit; Described main circuit is made up of power switch cabinet, low-tension switch cabinet, high-tension switch cabinet, pressure regulator, testing transformer and voltage current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200658754U CN201514447U (en) | 2009-09-11 | 2009-09-11 | Integral test device of main transformer of electric locomotive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200658754U CN201514447U (en) | 2009-09-11 | 2009-09-11 | Integral test device of main transformer of electric locomotive |
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| Publication Number | Publication Date |
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| CN201514447U true CN201514447U (en) | 2010-06-23 |
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| CN2009200658754U Expired - Fee Related CN201514447U (en) | 2009-09-11 | 2009-09-11 | Integral test device of main transformer of electric locomotive |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923128A (en) * | 2010-06-30 | 2010-12-22 | 南京工业职业技术学院 | Intelligent three-phase equipment safety detector |
| CN102928682A (en) * | 2011-08-09 | 2013-02-13 | 南车洛阳机车有限公司 | Meshless high-voltage test device of electric locomotive |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN104133096A (en) * | 2014-07-30 | 2014-11-05 | 北京铁路信号有限公司 | Method and device for testing coil device |
| CN105301389A (en) * | 2015-10-12 | 2016-02-03 | 沈阳南车时代交通设备有限公司 | Mobile test bench for tests of traction system |
| CN105510735A (en) * | 2015-11-27 | 2016-04-20 | 国家电网公司 | Intelligent distribution transformer integrated test and fault determination test handcart |
| CN108627725A (en) * | 2018-07-11 | 2018-10-09 | 东莞市大忠电子有限公司 | A kind of special transformer automatic test platform and its test method |
| RU198361U1 (en) * | 2020-02-07 | 2020-07-02 | Алексей Николаевич Цицорин | Mobile installation for the diagnosis of power distribution transformers |
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2009
- 2009-09-11 CN CN2009200658754U patent/CN201514447U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923128A (en) * | 2010-06-30 | 2010-12-22 | 南京工业职业技术学院 | Intelligent three-phase equipment safety detector |
| CN102928682A (en) * | 2011-08-09 | 2013-02-13 | 南车洛阳机车有限公司 | Meshless high-voltage test device of electric locomotive |
| CN102928682B (en) * | 2011-08-09 | 2016-05-25 | 南车洛阳机车有限公司 | High-voltage testing device without electric network for electric locomotives |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN103698621B (en) * | 2013-09-05 | 2016-08-17 | 国家电网公司 | A kind of transformer vehicular integrated test system |
| CN104133096A (en) * | 2014-07-30 | 2014-11-05 | 北京铁路信号有限公司 | Method and device for testing coil device |
| CN105301389A (en) * | 2015-10-12 | 2016-02-03 | 沈阳南车时代交通设备有限公司 | Mobile test bench for tests of traction system |
| CN105301389B (en) * | 2015-10-12 | 2018-01-16 | 沈阳中车时代交通设备有限公司 | A kind of transportable test panel platform for trailer system test |
| CN105510735A (en) * | 2015-11-27 | 2016-04-20 | 国家电网公司 | Intelligent distribution transformer integrated test and fault determination test handcart |
| CN108627725A (en) * | 2018-07-11 | 2018-10-09 | 东莞市大忠电子有限公司 | A kind of special transformer automatic test platform and its test method |
| CN108627725B (en) * | 2018-07-11 | 2023-09-08 | 东莞市大忠电子有限公司 | Special transformer automatic test platform and test method thereof |
| RU198361U1 (en) * | 2020-02-07 | 2020-07-02 | Алексей Николаевич Цицорин | Mobile installation for the diagnosis of power distribution transformers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20110911 |