CN104345254A - Train insulation detection control device - Google Patents
Train insulation detection control device Download PDFInfo
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- CN104345254A CN104345254A CN201410681776.4A CN201410681776A CN104345254A CN 104345254 A CN104345254 A CN 104345254A CN 201410681776 A CN201410681776 A CN 201410681776A CN 104345254 A CN104345254 A CN 104345254A
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Abstract
The invention relates to a train insulation detection control device, which comprises an inverter, a processor, a voltage regulator, a high voltage generator, a voltage sensor and a current sensor, wherein the inverter is used for converting the received train direct current voltage into alternating current voltage, the processor is used for generating a control signal, the voltage regulator is connected with the processor and the inverter, and is used for converting the alternating current voltage into the continuous variable alternating current voltage under the control of the processor, the high voltage generator is connected with the voltage regulator, and is used for converting the continuous variable alternating current voltage into a detection high voltage signal, the voltage sensor is used for generating and sending a detection voltage signal to the processor when the detection high voltage signal is applied to a to-be-tested object of a train body, the current sensor is used for generating and sending a detection current signal to the processor when the detection high voltage signal is applied to the to-be-tested object of the train body, and the processor is used for judging the insulation property according to the detection voltage signal and the detection current signal. The train insulation detection control device has the advantages that the performance and price ratio is good, the electric property is good, the electric leakage track index can meet the requirements of relevant Japanese standards, and the flame retardant level of a flame retardant product has passed the V-0 level of UL (underwriters laboratory) certification.
Description
Technical field
The present invention relates to train Insulation monitoring field, particularly relate to a kind of train Insulation monitoring control device.
Background technology
Along with the development in epoch, use the demand of transportation by railroad personnel and goods also increasing, and the main flow of train is electric locomotive now.
Because train operation scope is large, the geographical conditions difference between different geographical is large, and has plains region, region, hills and various river basins.In addition sea level elevation change is also different, and climbing situation is also a lot.
After train operation, all need to carry out Insulation monitoring, and the Insulation monitoring effect that existing insulation detection device detects is all very poor.
Summary of the invention
The object of the invention is the defect for prior art, a kind of train Insulation monitoring control device is provided, effectively can carries out Insulation monitoring to train.
For achieving the above object, the invention provides a kind of train Insulation monitoring control device, described device comprises:
Inverter, for being converted to alternating voltage by the locomotive received DC voltage;
Processor, for generation of control signal;
Pressure regulator, is connected with inverter with described processor, under the control of a processor described alternating voltage being converted to continuous variable alternating voltage;
High pressure generator, is connected with described pressure regulator, and for described continuous variable alternating voltage is converted into detection high-voltage signal, the earth terminal of described high pressure generator is connected with train body;
Voltage sensor, is connected with described processor, for when described detection high-voltage signal is loaded on the determinand of described train body, produces detectable voltage signals and sends to described processor;
Current sensor, be connected with described processor, for when described detection high-voltage signal is loaded on the determinand of described train body, produce sensed current signal and send to described processor, described processor judges insulativity according to detectable voltage signals and sensed current signal.
Further, described train Insulation monitoring control device also comprises storer, is connected with described processor.
Further, described train Insulation monitoring control device also comprises display, is connected with described processor.
Further, described train Insulation monitoring control device also comprises USB interface, is connected with described processor.
Further, described train Insulation monitoring control device also comprises clock chip, is connected with described processor.
Further, described determinand is top insulation.
Cost performance of the present invention is good, good electric property, and tracking index reaches Japanese relevant criterion; Flame retardant type product flame retardant grade proves V-0 level by UL.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of train Insulation monitoring control device of the present invention;
Fig. 2 is the schematic diagram of the roof of train insulation detection device that train Insulation monitoring control device of the present invention is corresponding;
Fig. 3 is the process flow diagram of the train insulation detecting method of train Insulation monitoring control device of the present invention;
Fig. 4 is the Cleaning Principle figure of train insulation detecting method.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 1 is the schematic diagram of train Insulation monitoring control device of the present invention, and as shown in the figure, train Insulation monitoring control device specifically comprises: inverter 11, processor 12, pressure regulator 13, high pressure generator 10, voltage sensor 14 and current sensor 15.
Inverter 11 is for being converted to alternating voltage by the locomotive received DC voltage; Processor 12 is for generation of control signal; Pressure regulator 13 is connected with inverter 11 with processor 12, under the control of the processor 12 alternating voltage being converted to continuous variable alternating voltage; High pressure generator 10 is connected with pressure regulator 13, and for continuous variable alternating voltage is converted into detection high-voltage signal, the earth terminal of high pressure generator 10 is connected with train body; Voltage sensor 14 is connected with processor 12, for when detecting high-voltage signal and being loaded on the determinand of train body, produces detectable voltage signals and sends to processor 12; Current sensor 15, is connected with processor 12, and for when detecting high-voltage signal and being loaded on the determinand of train body, produce sensed current signal and send to processor 12, processor 12 judges insulativity according to detectable voltage signals and sensed current signal.
The monitoring of the pressure regulation in system, boosting, electric current and voltage, measure all have employed transformer principle of work, namely for desirable transformer, according to Theory of Electromagnetic Field, if U
1, I
1, N
1and U
2, I
2, N
2be former limit and marginal voltage, electric current and the number of turn of these equipment respectively, then have:
And the design of control circuit and the selection of parameter, the needs realized primarily of system determined, also be applied to embedded scm, digital circuit, AD conversion, manipulation Software for Design etc. simultaneously, mainly complete the collection, breakdown judge, execute-in-place guidance etc. of man-machine mutual, signal.
High pressure generator 10 no-load voltage ratio is the dry testing transformer of 1:200, the 0-190V industrial-frequency alternating current of output voltage regulator can be faded to 0-35kV industrial-frequency alternating current.Transformer rated power 4kW, meets the maximum output requirement of pick-up unit.Compare mutual inductor boosting mode, use special step-up transformer can provide the test voltage of larger output power and Geng Gao, more easily can detect the insulation defect of roof high voltage equipment insulation system.Compare oily formula transformer and SF6 transformer, it is little that dry-type transformer has volume, and fire line is good, non-maintaining, pollution-free, anti-short circuit capability is strong, and temperature capacity is good, freedom from vibration is strong, some row advantages of grade easy for installation, is the optimal selection that motor train unit and electric locomotive are selected
The whole circuit of inverter is divided into two large divisions: first part adopts High-Accuracy PWM (width modulation) chip and MCU (micro processor) composition control circuit, utilize the on-off circuit of metal-oxide-semiconductor and high-frequency transformer composition, the 24V direct current provided by storage battery, converts the high-frequency alternating current of about 40kHz to by high-frequency PWM switch power technology; Part II circuit be then utilize bridge rectifier, filtering circuit high-frequency alternating current is transferred to about 400V direct current, 400V direct current is transferred to 220 industrial-frequency alternating currents of standard by the output circuit that the SPWM modulation technique utilizing MCU program to produce and IGBT power tube form, this circuit peak power output 3000W, power factor (PF) is up to more than 90%.Direct-flow input end adopts advanced anti-filling noise suppression technology, and the antinoise flowing backward device of built-in precision and wave filter, meet electromagnetic compatibility standard, do not interfere with each other when sharing accumulator with other equipment, avoids producing interference to accumulator.Workload-adaptability is strong simultaneously, in rated power, no matter be capacitive load, or inductive load all can normally use, not fear of damage.Possess volume little, lightweight, protection is complete, and precision is high, responds the features such as fast.
Again as shown in Figure 1, train Insulation monitoring control device also comprises storer 16, display 17, usb 18 and clock chip 19, and is connected with processor 12 respectively.
Storer 16 can the signal that detects of storage voltage sensor 14 and current sensor 15, and display 17 is for display, and usb 18 then can be connected with peripheral hardware, and clock chip 19 is for providing clock signal.
Fig. 2 is the schematic diagram of the roof of train insulation detection device that train Insulation monitoring control device of the present invention is corresponding, as shown in the figure, roof of train insulation detection device comprises: epoxy casting cylinder 21, vacuum interrupter 22, static contact 23, moving contact 24 and permanent magnet mechanism 25.
Epoxy casting cylinder 21 utilizes insulating material to make, such as epoxy resin.Vacuum interrupter 22 is contained in epoxy casting cylinder 21, and is that sealing is in epoxy casting cylinder 21.Static contact 23 is positioned at vacuum interrupter 22, and stretches out from epoxy casting cylinder 21; Moving contact 24 is positioned at epoxy casting cylinder 21, is connected with the high pressure generator 10 of outside, receives and detects high-voltage signal; Permanent magnet mechanism 25 has driving stem 250, be connected with moving contact 24 by insulated tension pole 26, when permanent magnet mechanism 25 receives connection signal rear drive driving stem 250, moving contact 24 is contacted with static contact 23 in vacuum interrupter 23, detects high-voltage signal and be loaded on determinand by moving contact 24 and static contact 23; When permanent magnet mechanism 25 receives cut-off signal rear drive driving stem 250, moving contact 24 and static contact 23 are disconnected in vacuum interrupter 22.
Permanent magnet mechanism 25 is by controlling energized action, on push away with drop-down: when above pushing away, in pressing switch body, insulated tension pole 26 makes the moving contact 24 in vacuum interrupter 22 close with moving contact spring and driving member, and with constant pressure compression, moving contact 24 and static contact 23 is compressed; Time drop-down, pulled open the moving contact 24 of arc-chutes equally by insulated tension pole in switch body 26, make switch opens; While switch motion, the proximity switch be arranged on permanent magnet mechanism 25 moves up and down simultaneously, opens or closes.
Self-evident as Insulation Inspection System roof device for the importance of Insulation Inspection System reliability service.For high-pressure vacuum switch (general switch is also like this), ensure that the key of its reliability design is: the application of arc-chutes, insulating Design, operating mechanism and transmission, controller and attachment design.
Vacuum interrupter 22 is as disconnector, and actual dropout current is only milliampere level, and much smaller than specified switching current (630A), therefore its life-span and security will improve further.The closing force that vacuum interrupter 22 needs is 600-800N, and permanent magnet mechanism 25 closing force is designed to 2200N, even if some demagnetization occurs after using long-time and also can normally use by assurance device.Insulated tension pole 26 fully protects positive reliability and synchronism as drive disk assembly.Moving contact 24 pull bar have employed epoxy resin sealing and makes, and decreases the quality of motion parts, for divide-shut brake provides certain facility.
Epoxy insulation material is widely applied in High-Voltage Electrical Appliances field due to its excellent insulation, physicochemical property.Have employed the major insulation part that outdoor epoxy resin is switch, it has better electrically, and mechanical integrated performance, is conducive to the volume and weight alleviating top of car.It has ultra-violet resistance, hydrophobic nature and self-cleaning, and the operational maintenance of device is simplified greatly.
27.5kV electric pressure, under air humidity 100% saturated conditions, safety air insulation distance >=360mm, can meet relevant requirements.
According to the relevant regulations of 27.5kV contact net electrical equipment intensity, design that outer creep distance is 1.1m, interior creep distance is 0.6m, withstand voltage is over the ground 100kV/1 minute.
Controller adopts low-power microprocessor, exports and adopts device for high-power power electronic, and main components adopts army's grade element, and current/voltage leaves nargin, and whole control circuit strengthens electromagnetic compatibility immunity design.Power supply supply is provided by electric capacity.Proximity switch adopts the proximity switch in 1,000,000 life-spans, and reliability is high.
Vacuum interrupter 22 directly waters in epoxy insulation upper end (static contact) and accesses motor train unit roof bus, and lower end (moving contact) connects the output terminal rising high pressure generator 10.Permanent magnet mechanism is installed below axis be used for disconnecting and moving contact in closed vacuum interrupter and static contact.Vacuum interrupter rated operational voltage 40.5kV, short duration power frequency withstand voltage reaches 100kV, rated current 630A, opens apart from 14mm, mechanical life 20000 times.Vacuum interrupter replaces traditional switch to not only increase security, improves stability.And stopped charged point, close a floodgate time arcing, electric discharge phenomena.
Permanent magnet mechanism 25 adopts symmetrical expression bistable structure, and no matter at closing position and open position, its confining force provides by neodymium-iron-boron permanent magnet.Permanent magnet mechanism is made up of seven critical parts: be fixed core, and for mechanism provides magnetic circuit passage, generally adopt silicon steel sheet stack shape structure for square structure, circular configuration then adopts electrical pure iron; Dynamic iron core is topmost moving component in whole mechanism, general employing electrical pure iron structure; Permanent magnet is power required when mechanism provides maintenance; For switching winding and closing coil; For driving stem, it is the connection tie between operating mechanism and switch drive.For driving stem, it is the connection tie between operating mechanism and switch drive.Drive motion unshakable in one's determination to produce electromagnetic attraction, must give permanent magnet mechanism point, closing coil energising, make it reach certain exciting watts, could meet like this vacuum switch point, closing speed requirement.Adopt large value capacitor as power supply in pick-up unit, have that pulse current is large, the duration of charging is short, excessive danger of not charging, can in parallelly use, volume is little, the life-span is long, the advantage such as economical and practical.
Again as shown in Figure 2, described device also comprises mechanism case 27 and cover plate 28, and permanent magnet mechanism 25 and external high pressure generator 10 are contained in mechanism case 27, and cover plate 28 covers on structure case 27.
Concrete, roof of train insulation detection device is positioned at the roof of train, vacuum interrupter 22 sealing, in epoxy casting cylinder 21, is installed a permanent magnet mechanism 25 in structure case 27, is linked the driving stem 250 of vacuum interrupter moving contact 24 and permanent magnet mechanism 25 with insulated tension pole 26 immediately below it.Vacuum interrupter moving contact 24 by being flexible coupling, external high pressure generator 10 output terminal received by wire, high pressure generator 10 obtains the 0-190V industrial-frequency alternating current sent here of pressure regulator from aviation plug, and boosts to 0-35kV.Permanent magnet mechanism 25 is divided by aviation plug acquisition, conjunction signal drives the indoor moving contact 24 of vacuum extinction, static contact 23 closes or disconnection, and when closing, high pressure detection signal is carried on high voltage bus.The detection voltage sensed and Leakage Current are delivered to controller by aviation plug and are processed analysis by measuring junction.
1, top of car electric Field Calculation and analysis
In order to make roof of train insulation detection device, volume is little as far as possible, numerical analysis and optimal design have been carried out to its Electric Field Distribution, maximum field intensity under actual motion voltage is 30kV in air is less than 3kV/mm, and the maximum field strength in insulating material is much smaller than its breakdown field strength.Therefore these device section insulating property are safe and reliable.
2, top of car aerodynamic air resistance calculates and analyzes
Insulation monitoring top of car is expert at during car runs, by a kind of opposition being subject to air and being formed it, i.e. and air resistance F
w, it is expressed as:
Wherein: V is speed, unit: m/s;
According to motor-car maximum row vehicle velocity V
1=350km/h=97.2m/s, considers maximum wind velocity V
2=30m/s, 127.2=V
1+ V
2=97.2+30=127.2m/s;
A is Insulation monitoring top of car cross-sectional area, unit: m
2;
C
wfor air resistance coefficient, its dimensionless, it only depends on the shape of mobile object usually.Different according to the profile of object, C
wvalue is general between 0.3-0.6.For plane C
wvalue is 1.1, and for the C of a spheroid
wvalue is 0.45.Be the face of cylinder for its windward side of top of car, C
wget 0.45.
Roof of train insulation detection device is positioned over roof, and exposed part is top (epoxy casting cylinder) and bottom (mechanism case) these two parts.Calculate this two parts air resistance below respectively.
The air resistance F on roof of train insulation detection device top (epoxy casting cylinder)
wcalculate
A
max＝π·R·h＝3.14x150x346mm
2＝0.16m
2
Its maximum bending strength is:
And the bending strength of this material is 110-120N/mm
2as can be seen here, the bending strength that roof of train insulation detection device top (epoxy casting cylinder) is born in train traveling process is far smaller than the bending strength that epoxy casting cylinder can bear itself, can find out that to meet the deformation caused because of air resistance in the operational process of top of car top very little.
The air resistance F of roof of train insulation detection device bottom (mechanism case)
wcalculate.
A
max＝π·R·h＝3.14x200x350mm
2＝0.22m
2；
Its maximum bending strength is:
It is arranged on roof with 10 M10 bolts, and it meets the demands completely.
Mechanism case adopt stainless steel welded, above cover plate be epoxy material, surface lacquer process, casing integral sealing.Mechanism case casing bottom is arranged on the roof with pantograph compartment by the through hole that 10 diameters are 12mm.
During concrete process, obtain 24V direct-current drive processor from train accumulator and run, simultaneously as inverter input power.Direct current 24V electricity is reverse into alternating current 220V by inverter, then recalls 0V-190V alternating current through pressure regulator, gives step-up transformer by aviation plug.Use a Switching Power Supply alternating current 220V to be converted to the capacitor that 110V direct current is permanent magnet mechanism in addition and fill energy.Processor carries out make and break permanent magnet mechanism automatically according to steward's instruction, regulates stepper motor to drive rotating shaft on pressure regulator to export suitable test voltage, controls cabinet and be contained in the rack with pantograph compartment adjacent compartment.
The principle process of the system worked well be made up of train Insulation monitoring control device and corresponding roof of train insulation detection device:
The 24V DC voltage of locomotive is converted to 220V alternating voltage by application inverter 11, with pressure regulator 13,220 alternating voltages are converted into the alternating voltage (needing to adjust at any time according to systems axiol-ogy) of 0 ~ 250V continuous variable again, again this voltage is converted to high pressure (the highest be no more than 30KV) through high pressure generator 10, and is connected with insulator power connection end through permanent magnetism high-voltage switch gear.High pressure generator 10 earth terminal is then held (car body) to be connected with the earth that connects of insulator and is connected in series the elementary of current transformer betwixt.Current sensor 15 utilizes current transformer to realize, and the secondary coil of current transformer is connected to control system, for signals collecting.After system electrification, first control system carries out self-inspection, confirm each parts of detection system self and entirety all working properly after, be in wait command state.According to order, adjustment control is carried out to relevant parts (pressure regulator, switch etc.), finally, by the collection to leakage current signal, compare, warning is made in judgement etc., normal etc. point out and notice leakage current value; This is detected data preserve or circulate a notice of superior system in order to inquiry later simultaneously.
If the insulating property of the insulator of roof are fine, then current transformer is elementary does not form loop, and current sensor secondary coil should not have signal.If the insulating property of top insulation are deteriorated, cause elementary formation loop, the leakage current in loop is at the secondary generation induction current of inductance sensor.Operation control system gathers this current signal (changing size of current into voltage) according to manipulation order, according to the large small intensity of electric current (voltage), judges the damaged condition of the insulating property of top insulation.Electric current is larger, and insulating property are poorer.According to default, the magnitude range can surveying insulating end leakage current is at present not more than 100mA.
Fig. 3 is the process flow diagram of the train insulation detecting method of roof of train insulation detection device of the present invention, as shown in the figure, specifically comprises the steps:
Step 101, train DC voltage is converted to alternating voltage by inverter;
Step 102, described alternating voltage is converted to continuous variable alternating voltage by pressure regulator;
Step 103, described continuous variable alternating voltage is converted to detection high-voltage signal by high pressure generator;
Step 104, described high pressure detection signal is loaded into moving contact by cable;
In addition, the earth terminal of described high pressure generator is connected on train body.
Step 105, after described moving contact contacts with static contact, is loaded on determinand by described detection high-voltage signal;
Concrete, permanent magnet mechanism drives driving stem under the control of the controller; Driving stem drives moving contact to contact with static contact.
Step 106, the detectable voltage signals produced respectively and sensed current signal are given described processor by voltage sensor and current sensor;
Step 107, described processor judges insulativity according to detectable voltage signals and sensed current signal.
Further, the detectable voltage signals received and sensed current signal are stored, and shows.
Insulation detection device adopts the insulation status of the method detection insulation system insulation system of roof high-tension apparatus being applied to power frequency 30kV withstand voltage test.The principle of work of device is as follows:
Fig. 4 is the Cleaning Principle figure of train insulation detecting method, in figure:
R: protective resistance,
K: switch,
Z
0: the equiva lent impedance of device self,
Z
x: the equiva lent impedance of top insulation,
Record according to milliammeter the situation that Leakage Current value judges insulation system in actual measurement process.
The present invention carries out qualitative detection to the insulating property of the feature of motor train unit metering system, and can report to the police.There is automatic storing data function, these data are that device provides science, accurately insulating property basis for estimation, simultaneously also for the insulating Design of roof high-tension apparatus provide truly, reliable reference data, these data are that later insulated on-line monitoring provides reference.To the high voltage equipment insulation hydraulic performance decline caused because of filthy and haze, there is repair function, and then reduce the flashover fault because filthy and haze cause.For roof high-tension apparatus provides independently High-Voltage Experimentation source, facilitate the withstand voltage test of other high-tension apparatus, the maintenance for locomotive provides conveniently.
Train Insulation monitoring detailed process is as follows:
Step 1, the mainframe box air switch below that closes closes, press the self-lock switch of front panel, inverter has DC 24V to input, AC 220V exports, now " main inversion 220V " lamp, " main+5V " lamp, " main+12V " lamp light, and " system combined floodgate " lamp, " system separating brake " lantern festival light according to current vacuum on off state or extinguish.
Step 2, detects because unexpected midway stops if last, now will show last analysis result.Then vacuum switch (" system combined floodgate " lamp goes out, and " system separating brake " lamp goes out) is disconnected, pressure regulator back to zero.If last time carries out complete detection, can not this step be carried out, then directly carry out next step.
Step 3, presses " detection " PBU pushbutton unit and will detect pantograph and main disconnected state, if the display of pantograph state is still in rising bow state or main disconnected state display is still in closure state, can not carries out next step and detect.If pantograph state is in fall arciform state and lead to break be in off-state, " bow falls in No. one, pantograph " lamp, " main disconnected separating brake " lamp light.Device will once close a floodgate to permanent magnet mechanism and separating brake test voluntarily respectively, and test mode be shown on a display screen.
Step 4, if pantograph state and main disconnected state meet testing conditions in previous step, and permanent magnet mechanism closes a floodgate, a point brake test passes through, then can first time Hi-pot test automatically.First, permanent magnet mechanism promotes insulated tension pole and closes vacuum interrupter, and pick-up unit is accessed high-pressure system; Then, the 220V industrial-frequency alternating current furnishing 0V-150V that processor control step driven by motor automatic coupling voltage regulator axis of rotation makes pressure regulator be exported by inverter, export 0V-30kV alternating current at Hi-pot test end simultaneously, and stop 10s at 30kV, the state of insulation of roof high-tension apparatus is tested.
Step 5, pass through if test in step, then processor can control once to test to confirm again.If there is flashover in test process, or leakage current values exceedes preset security threshold values, then the ceiling voltage before display screen display detects unsuccessfully and tests flashover, otherwise display detection is passed through.
Step 6, presses " time adjustment " button, can the system time of top insulation pick-up unit adjust.Can select adjusting respectively year, month, day, hour, min, second by left-right arrow, press "+" key numerically to add 1 and (if former numeral is 9, presses "+" key, be adjusted to 0 original, "-" key is reserved to other functions and uses, and should not be used to carry out time adjustment).
The present invention has excellent cracking resistance ability, and machinery and dielectric properties well, and have excellent thermostability, weathering performance, not free settling, ensure that Solidified enzyme homogeneity.
And cost performance of the present invention is good, raw material system Hensel step outdoor resin; Good electric property, tracking index reaches Japanese relevant criterion; Flame retardant type product flame retardant grade proves V-0 level by UL.
Professional should recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a train Insulation monitoring control device, is characterized in that, described device comprises:
Inverter, for being converted to alternating voltage by the locomotive received DC voltage;
Processor, for generation of control signal;
Pressure regulator, is connected with inverter with described processor, under the control of a processor described alternating voltage being converted to continuous variable alternating voltage;
High pressure generator, is connected with described pressure regulator, and for described continuous variable alternating voltage is converted into detection high-voltage signal, the earth terminal of described high pressure generator is connected with train body;
Voltage sensor, is connected with described processor, for when described detection high-voltage signal is loaded on the determinand of described train body, produces detectable voltage signals and sends to described processor;
Current sensor, be connected with described processor, for when described detection high-voltage signal is loaded on the determinand of described train body, produce sensed current signal and send to described processor, described processor judges insulativity according to detectable voltage signals and sensed current signal.
2. train Insulation monitoring control device according to claim 1, is characterized in that, described train Insulation monitoring control device also comprises storer, is connected with described processor.
3. train Insulation monitoring control device according to claim 1, is characterized in that, described train Insulation monitoring control device also comprises display, is connected with described processor.
4. train Insulation monitoring control device according to claim 1, is characterized in that, described train Insulation monitoring control device also comprises USB interface, is connected with described processor.
5. train Insulation monitoring control device according to claim 1, is characterized in that, described train Insulation monitoring control device also comprises clock chip, is connected with described processor.
6. roof of train insulation detection device according to claim 1, is characterized in that, described determinand is top insulation.
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| CN201410681776.4A CN104345254A (en) | 2014-11-21 | 2014-11-21 | Train insulation detection control device |
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|---|---|---|---|
| CN201410681776.4A CN104345254A (en) | 2014-11-21 | 2014-11-21 | Train insulation detection control device |
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Application publication date: 20150211 |