CN204462273U - A kind of portable power unit testing instrument apparatus - Google Patents
A kind of portable power unit testing instrument apparatus Download PDFInfo
- Publication number
- CN204462273U CN204462273U CN201520026044.1U CN201520026044U CN204462273U CN 204462273 U CN204462273 U CN 204462273U CN 201520026044 U CN201520026044 U CN 201520026044U CN 204462273 U CN204462273 U CN 204462273U
- Authority
- CN
- China
- Prior art keywords
- power
- module
- relay
- sampling
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000005070 sampling Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000004065 semiconductor Substances 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 11
- 238000007667 floating Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 239000013307 optical fiber Substances 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Tests Of Electronic Circuits (AREA)
Abstract
The utility model discloses a kind of portable power unit testing instrument apparatus.Described device comprises power module, supply module, main control module, sampling module, rear panel module and man-machine interface.Described device provides combined-voltage to power for power cell to be measured, carries out communication by optical fiber with it, and control its each power tube break-make flexibly, the voltage of its inner each feedback node of simultaneously sampling, judges that whether power cell to be measured is working properly.Described supply module utilizes backboard relay to join and is latched in discharge and recharge in a certain order in test process, prevents from misleading causing to-be-measured cell to damage or personnel's injury.Described sampling module can treat exchanging of power scale unit upper and lower bridge arm floatingly or d. c. voltage signal carries out sampling isolation.Described device has the advantages such as power taking is convenient, test is accurate, wiring is simple, security is high, volume is little, be easy to carry, and greatly can improve the testing efficiency of power cell.
Description
Technical field
The utility model belongs to the field tests of power electronics primary equipment, relates to a kind of portable power unit testing instrument apparatus.
Background technology
Along with Power Electronic Technique is fast-developing, high-voltage large-capacity power electronics primary equipment is just being widely used in electric system.Power cell, as the basic module of power electronics primary equipment, in factory and during scene carries out testing and safeguard, needs to carry out test perfect in detail.
Power cell is due to the problem such as bulky, electric pressure is high, test process is loaded down with trivial details, test very inconvenient at the scene, traditional power cell test relies on engineering technical personnel and uses high pressure accessory power supply and multimeter to carry out artificial test, not only expend the plenty of time energy of engineering staff, and test process complicated operation there is certain risk, test result only can carry out regional faults location, accurately cannot orient trouble spot.
In power cell manual test process, when the important devices IGBT (Insulated Gate Bipolar Transistor) of power cell does not open, impedance between its emitter and collector can reach tens M Ω grades, and the input impedance of multimeter voltage gear is only 10M Ω grade, only use a multimeter measured power unit bridge arm voltage, impedance between IGBT emitter and collector can be dragged down, have a strong impact on test result.
For improving power cell testing efficiency, promoting security and the accuracy of test, being badly in need of a kind of simple and safe efficient proving installation of exploitation.
Summary of the invention
The purpose of this utility model is: the portable tester device providing a kind of power unit module automatic test, it possesses the advantage that testing efficiency is high, measuring accuracy is high, automatic test degree is high, and easy to carry and use, greatly improve the security of whole test process.
Solution of the present utility model: portable power unit testing instrument apparatus, is characterized in that, comprises power module, supply module, main control module, sampling module, rear panel module and man-machine interface; Described power module adopts interchange city's electricity consumption to power, described supply module provides combined-voltage to power for power cell, described sampling module carries out sampling isolation modulation to floating ground combined-voltage signal, described main control module and power cell to be measured carry out communication, control its internal power pipe break-make, and process sampled data, by man-machine interface display test process and result; Described rear panel module provides the electrical connection circuit between module for other modules, comprises the discharge and recharge resistance switching hardware connection exclusive circuit of supply module.
Further, described supply module adopts discharge and recharge resistance switching hardware connection exclusive circuit, the closing coil of the first relay of its connection exclusive circuit assists normally closed node with the second relay, the 3rd relay assists normally closed node to be connected in series, one end is connected to power supply, and the other end is by the first metal-oxide-semiconductor ground connection; Switching winding one end of first relay is connected to power supply, and the other end is by the second metal-oxide-semiconductor ground connection; Second relay coil and the first relay be auxiliary often to be opened node and be connected in series, and one end is connected to power supply, and the other end passes through the 3rd metal-oxide-semiconductor ground connection; Normally closed node assisted by 3rd relay coil and the first relay, the second relay assists normally closed node to be connected in series, and one end is connected to power supply, and the other end is by the 4th metal-oxide-semiconductor ground connection.
Further, described supply module adopts a kind of discharge and recharge resistance switching logic of stability and safety, and namely when the second charging resistor and the excision of the first discharge resistance, the first relay is auxiliary often to be opened node and can close; When the first relay is auxiliary often open node closed after, the second charging resistor can drop into; Often open node disconnection when the first relay is auxiliary, when the second charging resistor disconnects, the first discharge resistance can drop into.
Further, first sampling channel of described sampling module is attempted by brachium pontis IGBT both sides, second sampling channel is attempted by lower brachium pontis IGBT both sides, two-way sampling channel adopts independent current source respectively, utilize sample resistance and linear optical coupling, floating ground high voltage signal is changed into the small voltage signal on common ground.
Above-mentioned module all adopts the direct insertion installation of guide rail, and tester device volume is little, and soft ribbons handle is installed in its cabinet side, is convenient to engineering staff and carries.Its power module can external city single-phase alternating current, and converts it into the power supply needed for each module of device; Its supply module can be direct current and the AC power that to-be-measured cell provides high-power high-voltage simultaneously, there is out-put supply short-circuit protection function, and adopt the method for device backboard relay hardware connection locking, ensure that test process carries out discharge and recharge strictly in accordance with certain order, the to-be-measured cell that preventing misleads causes damages or personnel's injury; Its sampling module by the upper and lower bridge arm of power cell all and connect the sampling circuit of high input impedance, can to exchange or d. c. voltage signal carries out sampling isolation modulation floating; Its main control module carries out communication by optical fiber and power cell control module to be measured, samples to the small voltage signal that above-mentioned sampling module modulates, and is responsible for data processing operation, Logic judgment execution, liquid crystal display and keyboard operation.
Described supply module needs in test process, meet following discharge and recharge order: discharge resistance is cut before the test begins, and charging current limiter resistance is put into; In test process after for power cell normal power supply, charging current limiter resistance is cut; After test terminates, discharge resistance is put into, by the flat wave capacitor rapid discharge of power cell.From hardware, described supply module, by the method for debugging instrument backboard relay hardware connection locking, ensure that test process carries out discharge and recharge in strict accordance with said sequence.Described sampling module supports the alternating current-direct current high voltage analog quantity sampling of multichannel floating ground.In test process, by the upper and lower bridge arm of power cell all and connect the high input impedance sampling circuit on independent floating ground, avoid only measuring the lower brachium pontis IGBT impedance when off-state that brachium pontis mid point voltage-to-ground causes reduce and affect test result.The linear optical coupling input side of above-mentioned sampling circuit all adopts independently power supply, utilize sampling resistor, floating ground high voltage signal is changed into and linear optical coupling input side small voltage signal altogether, amplified by linear optical coupling isolation, be modulated into small voltage signal, sample for main control module.Described tester device, for reducing volume, is convenient for carrying, the equal optimal design of size of all modules.Supply module due to volume of transformer larger, the PCB space of plug-in unit is nervous, for making full use of the volumetric spaces of transformer on supply module, the first former limit winding of the negative temperature coefficient first thermistor Rt with the first transformer that are used for limiting transformer combined floodgate surge is connected in series, is arranged in transformer plastic-steel shell.This method for designing has saved plane space on the one hand, the real time temperature of thermistor can be made to embody the temperature of transformer more accurately on the other hand.
The beneficial effects of the utility model: the utility model device has the advantages such as power taking is convenient, test is accurate, wiring is simple, safety coefficient is high, volume is little, be easy to carry, and test process is safe and reliable, in the factory that can be widely used in power cell and field engineering test, greatly improve its testing efficiency.
Accompanying drawing explanation
Fig. 1 is the system construction figure of the utility model tester device.
Fig. 2 is the schematic diagram of the utility model tester device supply module.
Fig. 3 is the principle accompanying drawing of the utility model tester device rear panel module relay connection locking.
Description of symbols: 1 sampling module; 2 main control modules; 3 power models; 4 power modules; 5 rear panel modules; 6 man-machine interfaces; A cable; B multimode optical fiber; C AC and DC gets energy cable; D CAN; E Serial Port Line.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Portable power unit testing instrument apparatus of the present utility model: as shown in Figure 1, comprise power module, supply module, sampling module, main control module, rear panel module and man-machine interface.Main control module is responsible for data processing operation, Logic judgment execution, liquid crystal display and keyboard operation, carries out communication by optical fiber and power cell control module to be measured, and samples to the small voltage signal of analog quantity plug-in unit modulation; Supply module can be to-be-measured cell and provides direct current and AC power simultaneously; Sampling module to exchange or DC high voltage signal carries out sampling isolation modulation floating.
As shown in Figure 2, described supply module, comprises the first former limit winding, the first vice-side winding, the second vice-side winding, the first rectifier bridge, the first thermistor, the first charging current limiter resistance, the second charging current limiter resistance and the first discharge resistance.Backboard first relay is auxiliary often to be opened node CJ1C and is connected in series with the first thermistor Rt, and the side that one end inputs with the first former limit winding is connected, and the other end is connected to city's electricity consumption live wire.The opposite side of above-mentioned first former limit winding input is connected with city's electricity consumption zero line.Above-mentioned first relay is assisted and is often opened single-phase city that the node CJ1C other end and power module export with being electrically connected.Above-mentioned second charging current limiter resistance and backboard second relay be auxiliary often open node CJ2B in parallel after, one end is connected to the second vice-side winding, and the other end is connected to the interchange input side of the first rectifier bridge by the second current-limiting resistance.The other end of above-mentioned second vice-side winding is directly connected to the interchange input opposite side of the first rectifier bridge.Above-mentioned first discharge resistance and backboard the 3rd relay be auxiliary often to be opened after node CJ3B connects, and is attempted by the first rectifier bridge DC output side two ends.
As shown in Figure 3, the mode that the utility model device adopts relay connection locking and main control module to drive, hardware and software ensures above-mentioned break-make order.First relay adopts twin coil magnetism holding type relay, and the second relay and the 3rd relay adopt monostable single line ring relay.Safe and reliable for ensureing test process, avoid hardware and software failure to cause the situation of by mistake break-make, above-mentioned CJ1C, CJ2B and CJ3B three relay auxiliary nodes must break-makes in the following order:
(1) often open node CJ2B and the 3rd relay is auxiliary often opens after node CJ3B disconnects when the second relay is auxiliary, the first relay is auxiliary often to be opened node CJ1C and could close;
(2) when the first relay is auxiliary often open node CJ1C closed after, the second relay is auxiliary often to be opened node CJ2B and could close;
(3) often open node CJ1C and the second relay is auxiliary often opens after node CJ2B disconnects when the first relay is auxiliary, the 3rd relay is auxiliary often to be opened node CJ3B and could close.
For meeting above-mentioned (1) break-make order, normally closed node CJ2C assisted by the closing coil CJ1A of the first relay and the second relay, the 3rd relay assists normally closed node CJ3C to be cascaded, one end is connected to power supply, and the other end is by the first metal-oxide-semiconductor ground connection.Switching winding CJ1B one end of first relay is connected to power supply, and the other end is by the second metal-oxide-semiconductor ground connection.For meeting above-mentioned (2) break-make order, the second relay coil CJ2A and the first relay be auxiliary often to be opened node CJ1D and is cascaded, and one end is connected to power supply, and the other end passes through the 3rd metal-oxide-semiconductor ground connection.For meeting above-mentioned (3) break-make order, normally closed node CJ1E assisted by the 3rd relay coil CJ3A and the first relay, the second relay assists normally closed node CJ2D to be cascaded, and one end is connected to power supply, and the other end is by the 4th metal-oxide-semiconductor ground connection.Metal-oxide-semiconductor drives by main control module.
Claims (4)
1. a portable power unit testing instrument apparatus, is characterized in that, comprises power module, supply module, main control module, sampling module, rear panel module and man-machine interface; Described power module adopts interchange city's electricity consumption to power, described supply module provides combined-voltage to power for power cell, described sampling module carries out sampling isolation modulation to floating ground combined-voltage signal, described main control module and power cell to be measured carry out communication, control its internal power pipe break-make, and process sampled data, by man-machine interface display test process and result; Described rear panel module provides the electrical connection circuit between module for other modules, comprises the discharge and recharge resistance switching hardware connection exclusive circuit of supply module.
2. tester device as claimed in claim 1, it is characterized in that, described supply module adopts discharge and recharge resistance switching hardware connection exclusive circuit, the closing coil of the first relay of its connection exclusive circuit assists normally closed node with the second relay, the 3rd relay assists normally closed node to be connected in series, one end is connected to power supply, and the other end is by the first metal-oxide-semiconductor ground connection; Switching winding one end of first relay is connected to power supply, and the other end is by the second metal-oxide-semiconductor ground connection; Second relay coil and the first relay be auxiliary often to be opened node and be connected in series, and one end is connected to power supply, and the other end passes through the 3rd metal-oxide-semiconductor ground connection; Normally closed node assisted by 3rd relay coil and the first relay, the second relay assists normally closed node to be connected in series, and one end is connected to power supply, and the other end is by the 4th metal-oxide-semiconductor ground connection.
3. tester device as claimed in claim 1, it is characterized in that, described supply module adopts a kind of discharge and recharge resistance switching logic of stability and safety, and namely when the second charging resistor and the excision of the first discharge resistance, the first relay is auxiliary often to be opened node and can close; When the first relay is auxiliary often open node closed after, the second charging resistor can drop into; Often open node disconnection when the first relay is auxiliary, when the second charging resistor disconnects, the first discharge resistance can drop into.
4. tester device as claimed in claim 1, it is characterized in that, first sampling channel of described sampling module is attempted by brachium pontis IGBT both sides, second sampling channel is attempted by lower brachium pontis IGBT both sides, two-way sampling channel adopts independent current source respectively, utilize sample resistance and linear optical coupling, floating ground high voltage signal is changed into the small voltage signal on common ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026044.1U CN204462273U (en) | 2015-01-14 | 2015-01-14 | A kind of portable power unit testing instrument apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026044.1U CN204462273U (en) | 2015-01-14 | 2015-01-14 | A kind of portable power unit testing instrument apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204462273U true CN204462273U (en) | 2015-07-08 |
Family
ID=53669142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520026044.1U Expired - Fee Related CN204462273U (en) | 2015-01-14 | 2015-01-14 | A kind of portable power unit testing instrument apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204462273U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932862A (en) * | 2016-07-15 | 2016-09-07 | 昆山悦利电气有限公司 | Fiber signal control device for IGBT (insulated gate bipolar transistor) testing |
| CN108344937A (en) * | 2018-02-11 | 2018-07-31 | 广东电网有限责任公司汕头供电局 | A kind of controllable test device of power cell |
| CN109709432A (en) * | 2019-01-22 | 2019-05-03 | 东莞市韬科电子有限公司 | A kind of multiple channel test system and device |
-
2015
- 2015-01-14 CN CN201520026044.1U patent/CN204462273U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932862A (en) * | 2016-07-15 | 2016-09-07 | 昆山悦利电气有限公司 | Fiber signal control device for IGBT (insulated gate bipolar transistor) testing |
| CN105932862B (en) * | 2016-07-15 | 2018-03-23 | 昆山悦利电气有限公司 | Fiber-optic signal control device is used in a kind of IGBT tests |
| CN108344937A (en) * | 2018-02-11 | 2018-07-31 | 广东电网有限责任公司汕头供电局 | A kind of controllable test device of power cell |
| CN108344937B (en) * | 2018-02-11 | 2024-07-02 | 广东电网有限责任公司汕头供电局 | Controllable testing device of power unit |
| CN109709432A (en) * | 2019-01-22 | 2019-05-03 | 东莞市韬科电子有限公司 | A kind of multiple channel test system and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104702208B (en) | Photovoltaic array ground insulation resistance online detecting system for high-power photovoltaic inverter | |
| CN105182117B (en) | A kind of direct current comprehensive test platform | |
| CA2927519A1 (en) | A gis electronic instrument transformer test system and method thereof | |
| CN204462273U (en) | A kind of portable power unit testing instrument apparatus | |
| CN202758035U (en) | Cable fault tester | |
| CN202548258U (en) | Device for checking alternating current/voltage loop | |
| CN103941079A (en) | On-line monitoring and fault diagnosis system for power distribution network PT | |
| CN110221157A (en) | A kind of secondary cable core checking device | |
| CN203350455U (en) | Nuclear radiation monitoring system fault diagnostic device | |
| CN108828394A (en) | A kind of railway feed cable leakage current on-line measuring device and method | |
| CN207882428U (en) | Portable electric energy measurement wiring calibration equipment | |
| CN202903962U (en) | Photovoltaic component monitoring system | |
| CN203950029U (en) | The integrated calibration equipment of a kind of novel single three-phase electric energy meter | |
| CN113466678B (en) | High-current multiphase change-over switch fault rapid detection device | |
| CN216144920U (en) | Multifunctional wiring device for mechanical characteristic test of handcart type circuit breaker | |
| CN103245836B (en) | There is the intelligent megohmmeter of automatic discharging function | |
| CN110672984A (en) | Portable direct current system ground fault detection device | |
| CN103983936B (en) | A kind of single three-phase electric energy meter integration calibration equipment | |
| CN104614627A (en) | Portable DC leakage detection positioning device and detection positioning method | |
| CN209471189U (en) | A kind of lightning arrester live-line test three-phase voltage current phase sequence selector | |
| CN206773121U (en) | A kind of detection cable buzzer | |
| CN103560484A (en) | Multipoint ground-connection current control device for three current transformers to monitor transformer clamping parts in online mode | |
| CN204536461U (en) | A kind of movable DC detection of electrical leakage positioning equipment | |
| CN104848955A (en) | winding temperature testing system and method | |
| CN103592561B (en) | Secondary wiring of current mutual inductor testing fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |