CN213423406U - On-load voltage regulation tapping switch test cabinet - Google Patents
On-load voltage regulation tapping switch test cabinet Download PDFInfo
- Publication number
- CN213423406U CN213423406U CN202021816856.3U CN202021816856U CN213423406U CN 213423406 U CN213423406 U CN 213423406U CN 202021816856 U CN202021816856 U CN 202021816856U CN 213423406 U CN213423406 U CN 213423406U
- Authority
- CN
- China
- Prior art keywords
- tap
- voltage
- electrically connected
- module
- layer
- 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.)
- Active
Links
Images
Abstract
The utility model discloses an on-load voltage regulation tapping switch test cabinet, which comprises a cabinet body, a boosting module, a multi-gear voltage regulation module and a voltage regulation tapping switch control module; the cabinet body comprises a boosting layer, a multi-gear variable voltage layer and a controller layer, wherein the boosting module is arranged on the boosting layer, the multi-gear voltage regulating module is arranged on the multi-gear variable voltage layer, and the voltage regulating tap switch control module is arranged on the controller layer; the boosting module is electrically connected with the multi-gear voltage regulating module, and the multi-gear voltage regulating module is electrically connected with the voltage regulating tap switch control module. Adopt the utility model discloses, can carry out the live test under single phase power supply, solve the problem that the on-the-spot no three-phase electricity can't be tested, can not install the transformer on, directly carry out the simulation operation inspection to on-load tap changer, reduce the detection cost, practiced thrift a large amount of manpower and materials.
Description
Technical Field
The utility model relates to a power equipment especially relates to an on-load voltage regulation tapping switch test cabinet.
Background
With the increasing capacity of power equipment and the scale of power networks, the requirements for the reliability of the operation of equipment in power systems are increasing. In the operation and maintenance of modern power equipment, the on-load tap changer is very important power transmission and distribution equipment in a power system transformer substation, and can realize on-load tap regulation of a high-voltage power transmission and distribution grid so as to keep the voltage of an industrial power supply system and a residential power supply system stable. The on-load tap changer is the only movable part in the on-load tap changing transformer and is also one of the key parts. The manufacturing quality and the operation and maintenance technical level of the on-load tap-changer are directly related to the operation safety of the on-load tap-changer. With the increase of the application of the on-load tap-changer in the power grid, the regulation frequency of the on-load tap-changer is greatly improved compared with the past, and the on-load tap-changer has an increased fault. Therefore, before the on-load tap-changer is installed or after a problem occurs, the on-load tap-changer needs to be operated and detected urgently when troubleshooting is carried out.
The performance of the on-load tap changer includes both electrical and mechanical properties. The electrical performance mainly refers to contact resistance, and when the contact resistance of the contact is increased, the contact is overheated and even burnt. The mechanical performance refers to the action sequence and time matching of components such as a selector switch, a change-over switch and the like in the operation process of the on-load tap changer, whether a clamping plug exists or not in the switching process or not, the switching of a contact is not in place and the like.
The on-load tap changer has multiple fault modes, which specifically include: the transmission shaft is broken, the contact between the contacts of the selector switch is poor, the phenomena of refusing to move and sliding caused by the failure of an operating mechanism, the failure of a limit switch, the refusing to move, the suspension or the action lag of a selector switch, the loosening and the falling of an internal fastener, the internal leakage and the like are caused.
The existing detection modes comprise two modes, one mode is that the on-load tap changer is lifted out and connected with an oscilloscope, a transmission mechanism is manually controlled, and a oscillogram is captured to judge whether the switch works; and the second step is to utilize a tap changer tester to measure data such as transition time, transition resistance, three-phase synchronism and the like to analyze the quality of the switch. These methods can only be used for switches without electrical checks and only switches can be checked while the controller is not functioning and has to be tested otherwise. In the actual use process, the normal use of electrification is ensured, when an electrification test is required, the electrification test is required to be carried out, the electrification test needs to be carried out again in the transformer, three-phase electricity needs to be used for connection, and the workload is very huge.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a provide an on-load voltage regulation tapping switch test cabinet, will step up module, many grades of voltage regulation module, the integration of voltage regulation tapping switch control module at the cabinet body, directly carry out the live working inspection to on-load voltage regulation tapping switch, the test result is reliable, low cost.
In order to solve the technical problem, the utility model provides an on-load voltage regulation tapping switch test cabinet, which comprises a cabinet body, a boosting module, a multi-gear voltage regulation module and a voltage regulation tapping switch control module; the cabinet body comprises a boosting layer, a multi-gear variable voltage layer and a controller layer, wherein the boosting module is arranged on the boosting layer, the multi-gear voltage regulating module is arranged on the multi-gear variable voltage layer, and the voltage regulating tap switch control module is arranged on the controller layer; the boosting module is electrically connected with the multi-gear voltage regulating module, and the multi-gear voltage regulating module is electrically connected with the voltage regulating tap switch control module.
As the improvement of the scheme, the boosting layer is positioned at the lower part of the cabinet body, the boosting module comprises a voltage regulator and a boosting transformer, a live wire and a zero wire of an alternating current power supply are respectively and electrically connected with two input ends of the voltage regulator, two output ends of the voltage regulator are respectively and electrically connected with two wiring ends of a primary side coil of the boosting transformer, and a secondary side coil of the boosting transformer is electrically connected with the multi-gear voltage regulating module.
As an improvement of the scheme, the boosting module further comprises a power lamp, and the output end of the voltage regulator is electrically connected with the power lamp and the wiring end of the primary side coil of the boosting transformer respectively.
As an improvement of the scheme, the multi-gear voltage transformation layer is positioned in the middle of the cabinet body, the multi-gear voltage regulation module comprises a high-voltage connector, a multi-tap step-down transformer and a high-voltage fuse, one terminal of a secondary side coil of the step-up transformer is electrically connected with the test tap switch, the test tap switch is electrically connected with the high-voltage connector, the high-voltage connector is electrically connected with a terminal of a primary side coil of the multi-tap step-down transformer, the other terminal of the secondary side coil of the step-up transformer is electrically connected with the high-voltage fuse, and the high-voltage fuse.
As an improvement of the above, the terminals of the primary side coil of the multi-tap step-down transformer include at least three tap terminals, and the high-voltage connector is electrically connected to different tap terminals to perform switching of a step-down tap.
As an improvement of the scheme, the controller layer is positioned at the upper part of the cabinet body, the voltage regulating tapping switch control module comprises a voltage regulating tapping switch controller and a controller operation panel, a wiring terminal of a secondary side coil of the multi-tap step-down transformer is electrically connected with the voltage regulating tapping switch controller, the voltage regulating tapping switch controller is electrically connected with the controller operation panel, and the controller operation panel is installed on an upper cover plate of the controller layer.
As an improvement of the above scheme, the voltage regulating tap switch control module further comprises an ammeter, a voltmeter and a load indicator lamp, wherein the ammeter, the voltmeter and the load indicator lamp are respectively and electrically connected with a terminal of a secondary side coil of the multi-tap step down transformer and the voltage regulating tap switch controller, and the ammeter, the voltmeter and the load indicator lamp are all installed on an upper cover plate of the controller layer.
Implement the utility model has the advantages that:
implement the utility model discloses on-load tap-changer test cabinet can carry out the live-line test under single phase power supply, has solved the problem that the on-the-spot no three-phase electricity can't be tested, can not install the transformer on, directly carry out the simulation operation inspection to on-load tap-changer, has reduced the detection cost, has practiced thrift a large amount of manpower and materials.
Particularly, the cabinet body includes step-up layer, many grades of vary voltage layer and controller layer, and the module that steps up is installed at the step-up layer, and many grades of voltage regulation module are installed at many grades of vary voltage layer, and pressure regulating tapping switch control module installs at controller layer to all integrate test equipment and test object in a cabinet body, need not to demolish the on-load voltage regulating tapping switch and come out the individual test, reduce work load and test cost. The boost module is connected with many grades of voltage regulation module electricity, and many grades of voltage regulation module is connected with voltage regulation tapping switch control module electricity, and then can carry out live-line test under single phase power, has solved the problem that the on-the-spot no three phase electricity can't be tested, can not install on the transformer, directly carry out the simulation operation inspection to on-load tap changer, has reduced the detection cost, practices thrift a large amount of manpower and materials.
Drawings
Fig. 1 is a schematic structural diagram of the on-load tap changer test cabinet of the present invention;
fig. 2 is the electric connection relation schematic diagram of the on-load tap changer test cabinet of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside etc. position words that appear or will appear in the text only use the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.
Fig. 1 is the structure schematic diagram of the on-load tap changer test cabinet of the present invention. Fig. 2 is the electric connection relation schematic diagram of the on-load tap changer test cabinet of the utility model.
The utility model discloses on-load voltage regulation tapping switch test cabinet includes cabinet body 1, boost module 2, many grades of voltage regulation modules 3 and voltage regulation tapping switch control module 4; the cabinet body comprises a boosting layer, a multi-gear variable voltage layer and a controller layer, wherein the boosting module 2 is arranged on the boosting layer, the multi-gear voltage regulating module 3 is arranged on the multi-gear variable voltage layer, and the voltage regulating tap switch control module 4 is arranged on the controller layer; the boosting module 2 is electrically connected with the multi-gear voltage regulating module 3, and the multi-gear voltage regulating module 3 is electrically connected with the voltage regulating tap switch control module 4.
Implement the utility model discloses on-load tap-changer test cabinet can carry out the live-line test under single phase power supply, has solved the problem that the on-the-spot no three-phase electricity can't be tested, can not install the transformer on, directly carry out the simulation operation inspection to on-load tap-changer, has reduced the detection cost, has practiced thrift a large amount of manpower and materials.
Particularly, the cabinet body includes step-up layer, many grades of vary voltage layer and controller layer, and the module that steps up is installed at the step-up layer, and many grades of voltage regulation module are installed at many grades of vary voltage layer, and pressure regulating tapping switch control module installs at controller layer to all integrate test equipment and test object in a cabinet body, need not to demolish the on-load voltage regulating tapping switch and come out the individual test, reduce work load and test cost. The boost module is connected with many grades of voltage regulation module electricity, and many grades of voltage regulation module is connected with voltage regulation tapping switch control module electricity, and then can carry out live-line test under single phase power, has solved the problem that the on-the-spot no three phase electricity can't be tested, can not install on the transformer, directly carry out the simulation operation inspection to on-load tap changer, has reduced the detection cost, practices thrift a large amount of manpower and materials.
The specific parts of the on-load tap changer test cabinet of the present invention are described below.
The boost layer is located the lower part of the cabinet body, and boost module 2 includes voltage regulator 21 and step up transformer 22, and alternating current power supply's live wire and zero line are connected with two input electricity of voltage regulator 21 respectively, and two output of voltage regulator 21 are connected with two wiring ends electricity of the primary side coil of step up transformer 22 respectively, and step up transformer 22 secondary side coil is connected with many grades of voltage regulation module 3 electricity.
The voltage of a single-phase alternating-current power supply, for example, 220V, can be boosted through the voltage regulator 21 and the step-up transformer 22, so that the high-voltage working environment of the on-load tap-changer can be simulated.
The booster module 2 further includes a power lamp 23, and the output terminal of the voltage regulator 21 is electrically connected to the power lamp 23 and the terminal of the primary winding of the booster transformer 22, respectively.
The power lamp 23 is used to display the status of the power source, such as a green lamp when the power source is normal and a red lamp to give an alarm signal when the power source fails.
The multi-gear voltage-regulating layer is positioned in the middle of the cabinet body, the multi-gear voltage-regulating module 3 comprises a high-voltage connector 31, a multi-tap step-down transformer 32 and a high-voltage fuse 33, one terminal of a secondary side coil of the step-up transformer 22 is electrically connected with a test tap switch, the test tap switch is electrically connected with the high-voltage connector 31, the high-voltage connector 31 is electrically connected with a terminal of a primary side coil of the multi-tap step-down transformer 32, the other terminal of the secondary side coil of the step-up transformer is electrically connected with the high-voltage fuse 33, and the high-voltage fuse 33.
It should be noted that the test tapping switch is the utility model discloses the test object of on-load tap-changer test cabinet. The test tap changer is frequently used in actual production, so that the safety and reliability of the test tap changer need to be tested.
The test tap changer may be various types of tap changers, for example, in fig. 2, the test tap changer includes a main arc extinguishing vacuum tube 51, an auxiliary arc extinguishing vacuum tube 52, a transition resistor 53, a common contact 54, a main switch contact 55 and an auxiliary switch contact 56, the main arc extinguishing vacuum tube 51, the transition resistor 53 and the main switch contact 55 are electrically connected in sequence, the auxiliary arc extinguishing vacuum tube 52 is electrically connected with the common contact 54, and the main switch contact 55 and the auxiliary switch contact 56 are electrically connected with the high-voltage connector 31 respectively.
When the test tap switch is tested, the switch brake on the common contact 54 is switched between the main switch contact 55 and the auxiliary switch contact 56, and in the switching process, in order to prevent the high-voltage arc from damaging the circuit, the main arc-extinguishing vacuum tube 51 and the auxiliary arc-extinguishing vacuum tube 52 are timely switched off to perform arc-extinguishing treatment, so that the damage of the high-voltage arc to the test tap switch is reduced. For example, when the switch gate is switched from the main switch contact 55 to the auxiliary switch contact 56, the main arc-extinguishing vacuum tube 51 is opened in time to eliminate the arc generated between the main switch contact 55 and the common contact 54.
In addition, the high voltage fuse 33 is blown to protect the circuit when the voltage of the multi-step voltage adjusting module 3 is excessively high. Of course, except high-voltage fuse 33, the utility model discloses on-load tap-changer test cabinet still includes other conventional circuit protection structures, like protection switch etc. thereby it can trip off power supply, protection circuit under the circumstances such as appear short circuit, overload.
Further, the terminals of the primary side coil of the multi-tap step-down transformer include at least three tap terminals, and the high-voltage tap is electrically connected to different tap terminals to perform switching of a step-down tap.
It should be noted that, after the test is started, the two connection ends of the terminals of the primary side coil of the high-voltage connector 31 and the multi-tap step-down transformer 32 will be stepped up to the highest gear from the current gear, then stepped down to the lowest gear from the highest gear, and then stepped down to the highest gear from the lowest gear, and the test is performed on the switching action of the tap changer after each gear is switched.
As shown in fig. 2, each shift of the two connection terminals of the primary winding of the high-voltage connector 31 and the multi-tap step-down transformer 32 is stopped at 2 adjacent shifts, and the test of the tap changer to be tested is to perform a switching test between 2 adjacent shifts. The tester can control the up-down gear position through the operation panel, for example, the up-down button is pressed, the two connection ends of the high-voltage connector 31 and the terminal of the primary side coil of the multi-tap step-down transformer 32 are raised by one gear position from the current gear position, and then the test tap changer is automatically switched and tested.
The controller layer is located on the upper portion of the cabinet body, the voltage regulation tapping switch control module 4 comprises a voltage regulation tapping switch controller 41 and a controller operation panel 42, a terminal of a secondary side coil of the multi-tap step-down transformer 32 is electrically connected with the voltage regulation tapping switch controller 41, the voltage regulation tapping switch controller 41 is electrically connected with the controller operation panel 42, and the controller operation panel 42 is installed on an upper cover plate of the controller layer.
It should be noted that the upper cover plate of the controller layer is the upper cover plate of the cabinet body, that is, the controller layer includes not only the inner space of the upper portion of the cabinet body, but also the upper cover plate of the cabinet body. Through installing controller operating panel 42 on the upper cover plate of the cabinet body, make things convenient for the tester to test, need not the tester to open the cabinet body and operate, reduce the emergence of incident such as electric shock.
In the test process, if the transmission shaft of the tap changer is broken, the controller operation panel 42 will display the gear signal which can not be detected and give an alarm. Poor contact between the common contact 54, the main switch contact 55 and the auxiliary switch contact 56 may cause the controller operating panel 42 to power down or blink. The no feedback signal alarm is present on the controller operating panel 42 in the event of a test tap changer operating mechanism failure. When the gear switches on the controller operation panel 42 fail, the controller operation panel 42 will generate corresponding set alarm information when the gear switching is unsuccessful.
The tap changer control module 4 further includes an ammeter 43, a voltmeter 44 and a load indicator lamp 45, the ammeter 43, the voltmeter 44 and the load indicator lamp 45 are respectively electrically connected with the terminal of the secondary side coil of the multi-tap step down transformer 32 and the tap changer controller 41, and the ammeter 43, the voltmeter 44 and the load indicator lamp 45 are all mounted on the upper cover plate of the controller layer.
The controller operation panel 42, the ammeter 43, the voltmeter 44 and the load indicator lamp 45 are mounted on the upper cover plate of the controller layer, so that the tester can conveniently perform test operation and observe test signals.
When the test cabinet is powered on, the power lamp 23 is turned on, the test tap switch, the multi-tap step-down transformer 32 and the high-voltage fuse 33 are connected, and when the circuit has no fault, the load indicator lamp 45 is turned on, otherwise, power-off inspection is required.
In addition, because the load end is located at one side of the secondary side coil of the multi-tap step-down transformer 32, the voltage regulating tap switch controller 41 can choose to take electricity from the load end, the voltmeter 44 can display the load voltage change, the ammeter 43 can display the current of the voltage regulating tap switch controller 41, if a fault occurs in the test process, the fault can be visually judged through whether the voltage regulating tap switch controller 41 is powered off, and if the fault occurs, the voltage regulating tap switch test fault needs to be powered off to check the switch.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (7)
1. An on-load tap-changer test cabinet is characterized by comprising a cabinet body, a boosting module, a multi-gear voltage regulating module and a voltage regulating tap-changer control module;
the cabinet body comprises a boosting layer, a multi-gear variable voltage layer and a controller layer, the boosting module is installed on the boosting layer, the multi-gear voltage regulating module is installed on the multi-gear variable voltage layer, and the voltage regulating tap switch control module is installed on the controller layer;
the boosting module is electrically connected with the multi-gear voltage regulating module, and the multi-gear voltage regulating module is electrically connected with the voltage regulating tap switch control module.
2. The on-load tap changer test cabinet according to claim 1, wherein the step-up layer is located at a lower portion of the cabinet body, the step-up module comprises a voltage regulator and a step-up transformer, a live line and a zero line of an ac power supply are electrically connected with two input ends of the voltage regulator respectively, two output ends of the voltage regulator are electrically connected with two terminals of a primary side coil of the step-up transformer respectively, and a secondary side coil of the step-up transformer is electrically connected with the multi-step voltage regulation module.
3. The on-load tap changer test cabinet of claim 2, wherein the step-up module further comprises a power lamp, and the output terminal of the voltage regulator is electrically connected to the power lamp and the terminal of the primary side coil of the step-up transformer, respectively.
4. The on-load tap changer test cabinet of claim 2, wherein the multi-tap changing layer is located in the middle of the cabinet body, the multi-tap changing module comprises a high voltage connector, a multi-tap step down transformer and a high voltage fuse, one terminal of the secondary side coil of the step up transformer is electrically connected with the test tap switch, the test tap switch is electrically connected with the high voltage connector, the high voltage connector is electrically connected with the terminal of the primary side coil of the multi-tap step down transformer, the other terminal of the secondary side coil of the step up transformer is electrically connected with the high voltage fuse, and the high voltage fuse is electrically connected with the terminal of the primary side coil of the multi-tap step down transformer.
5. The on-load tap changer test cabinet of claim 4, wherein the terminals of the primary winding of the multi-tap step down transformer comprise at least three tap positions, and the high voltage tap is electrically connected to different tap positions for switching of the step down positions.
6. The on-load tap changer test cabinet of claim 4, wherein the controller layer is located at an upper portion of the cabinet body, the tap changer control module comprises a tap changer controller and a controller operating panel, a terminal of a secondary side coil of the multi-tap step down transformer is electrically connected with the tap changer controller, the tap changer controller is electrically connected with the controller operating panel, and the controller operating panel is mounted on an upper cover plate of the controller layer.
7. The on-load tap changer test cabinet of claim 6, wherein the tap changer control module further comprises an ammeter, a voltmeter, and a load indicator light, wherein the ammeter, the voltmeter, and the load indicator light are electrically connected to the terminal of the secondary side coil of the multi-tap step down transformer and the tap changer controller, respectively, and the ammeter, the voltmeter, and the load indicator light are mounted on the upper cover plate of the controller layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021816856.3U CN213423406U (en) | 2020-08-26 | 2020-08-26 | On-load voltage regulation tapping switch test cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021816856.3U CN213423406U (en) | 2020-08-26 | 2020-08-26 | On-load voltage regulation tapping switch test cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213423406U true CN213423406U (en) | 2021-06-11 |
Family
ID=76258629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021816856.3U Active CN213423406U (en) | 2020-08-26 | 2020-08-26 | On-load voltage regulation tapping switch test cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213423406U (en) |
-
2020
- 2020-08-26 CN CN202021816856.3U patent/CN213423406U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110854924B (en) | One-time voltage-on synchronous phase-checking linkage switching inspection system and inspection method for electrical system | |
| CN108459230B (en) | Fault detection method for electrical high-voltage equipment | |
| CN110031756B (en) | DC contactor performance test conversion circuit and service life test method | |
| US7492062B1 (en) | Modular switchgear control | |
| CN2619355Y (en) | Relay protection live check instrument | |
| CN213423406U (en) | On-load voltage regulation tapping switch test cabinet | |
| CN203927005U (en) | Electric valve control circuit and the electric operated valve instrument that comprises this circuit | |
| CN204613737U (en) | Switch analogue means | |
| CN112285447A (en) | Switch drawer test circuit and test equipment | |
| CN207066733U (en) | A kind of secondary conditioning device of switch cubicle mechanical characteristic test | |
| KR100330254B1 (en) | Test equipment and method for making of instantaneous power interruption, voltage swell and sag variably | |
| CN210982617U (en) | Switch drawer test circuit and test equipment | |
| CN111443281B (en) | Electrical blocking device and circuit breaker or isolating switch | |
| CN210224939U (en) | Automatic power supply switching device for checking fault phase protection function of crane | |
| CN211456713U (en) | One-time pressure-on synchronous nuclear phase linkage switching and testing system for electrical system | |
| KR100460622B1 (en) | The apparatus of transformer with a built-in switch | |
| CN210016327U (en) | Monitoring device and monitoring system for automatic switch of distributed power distribution network | |
| CN113253107A (en) | Maintenance operation device for draw-out type high-voltage circuit breaker | |
| CN113687220A (en) | Simulation device and method for spring energy storage type vacuum circuit breaker | |
| KR200359402Y1 (en) | Transformer for a construction of non-interruption electric power, installed in three road type on-load loop turning high pressure switch with instant turning time | |
| CN103472332B (en) | A kind of pick-up unit for all insulation fully enclosed looped network cabinet and method | |
| CN211627713U (en) | Portable testing device | |
| CN215641683U (en) | Circuit breaker anti-tripping function testing device | |
| EA013297B1 (en) | Directly driving high current load switch and controlling system therefor | |
| CN219554656U (en) | Maintenance power distribution optimizing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |