CN216013540U - Novel lightning arrester live test system - Google Patents
Novel lightning arrester live test system Download PDFInfo
- Publication number
- CN216013540U CN216013540U CN202122290325.6U CN202122290325U CN216013540U CN 216013540 U CN216013540 U CN 216013540U CN 202122290325 U CN202122290325 U CN 202122290325U CN 216013540 U CN216013540 U CN 216013540U
- Authority
- CN
- China
- Prior art keywords
- resistor
- electrode
- triode
- controller
- power supply
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 230000003321 amplification Effects 0.000 claims abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000010295 mobile communication Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model provides a novel lightning arrester live-line test system, which comprises a controller, a wireless transmission module, an isolation amplification acquisition module, a memory, a power supply control unit, a positioning module, a fingerprint acquisition device, a touch display and a wireless acquisition device; the power supply control unit comprises a storage battery unit, a power supply control circuit, a first voltage stabilizing circuit DC1 and a second voltage stabilizing circuit DC 2; through above-mentioned structure, the aspect can carry out accurate collection to the electric current and the voltage index of arrester, and on the other hand can supervise the staff who arrives the test site to report an emergency and ask for help or increased vigilance when appointed personnel mismatch in staff and the operation order, thereby prevent because there is the validity of test potential safety hazard and assurance test data in personnel's problem.
Description
Technical Field
The utility model relates to a novel electrified test system of arrester.
Background
The arrester is one of the indispensable components and parts among the electric power system for protect electric power system's equipment, long-term operation in-process, the ageing phenomenon can appear in the structure of arrester to need carry out the live-line test to the arrester, generally including electric current and voltage signal detection, thereby carry out corresponding index estimation through electric current and voltage and judge the ageing degree.
In the prior art, a portable live test device is needed for live test of an arrester, and data acquisition is performed after the live test device is connected with a current transformer, a voltage transformer and the like on the arrester by a worker, however, although the existing arrester test system can realize live detection, the situation that supervision of the worker is not in place exists, namely: corresponding arrangement is carried out in the instruction of testing the operation order according to the professional degree, the academic history, the experience and the like of the working personnel, however, the working personnel which are not appointed by the operation order often test in the actual test, and if the professional degree and the experience are insufficient, the test has safety risk on one hand and the tested data often have no validity on the other hand.
Therefore, in order to solve the above technical problems, it is necessary to provide a new technical means.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a pair of electrified test system of arrester can accurately gather the electric current and the voltage index of arrester on the one hand, and on the other hand can supervise the staff who reachs the test site to report an emergency and ask for help or increased vigilance when appointed personnel mismatch in staff and the operation order, thereby prevent because there is the validity of test potential safety hazard and assurance test data in personnel's problem.
The utility model provides a lightning arrester live-line test system, which comprises a controller, a wireless transmission module, an isolation amplification acquisition module, a memory, a power supply control unit, a positioning module, a fingerprint acquisition device, a touch display and a wireless acquisition device;
the power supply control unit comprises a storage battery unit, a power supply control circuit, a first voltage stabilizing circuit DC1 and a second voltage stabilizing circuit DC 2;
the power supply output end of the storage battery unit is connected with the input end of the power supply control circuit, the output end of the power supply control circuit is connected with the input end of the first voltage stabilizing circuit DC1, the output end of the first voltage stabilizing circuit DC1 is connected with the input end of the second voltage stabilizing circuit DC2, and the second voltage stabilizing circuit DC2 supplies power to the controller and the memory; the output end of the first voltage stabilizing circuit DC1 supplies power to the positioning module, the fingerprint collector, the touch display, the wireless transmission module and the isolation amplifier;
the controller passes through wireless transmission module and upper monitoring host communication connection, the input of isolating and amplifying acquisition module is connected with the voltage transformer's of arrester output, the output of isolating and amplifying acquisition module is connected with the input of controller, the current acquisition unit communication connection of wireless collector and arrester, the output and the controller of wireless collector are connected, controller and memory communication connection, locating module's output and controller are connected, fingerprint collector's output and controller are connected, controller and touch display communication connection.
Further, the power supply control circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a triode Q2, a triode Q3, a triode Q5, a PMOS tube Q1, an optocoupler Q4, a self-reset switch S1 and a diode D1;
one end of a resistor R1 serving as a power supply input end of the power supply control circuit is connected to a power supply output end of the storage battery unit, the other end of the resistor R1 is connected with a source electrode of a PMOS tube Q1, a source electrode of a PMOS tube Q1 is connected with a drain electrode of a PMOS tube Q1 through a self-reset switch S1, a source electrode of the PMOS tube Q1 is connected with a grid electrode of a PMOS tube Q1 through a resistor R2, a grid electrode of a PMOS tube Q1 is connected with a collector electrode of a triode Q2 through a resistor R3, an emitter electrode of a triode Q2 is grounded, a base electrode of a triode Q2 is grounded through a resistor R5, a base electrode of a triode Q2 is grounded through a capacitor C2, a base electrode of the triode Q2 is connected with a drain electrode of the PMOS tube Q2 through a resistor R2, a drain electrode of the PMOS tube Q2 is connected with a common connection point between the base electrode of the capacitor C2 and the base electrode of the triode Q2, a collector electrode of the triode Q2 is grounded, the base electrode of the triode Q3 is connected with one end of the resistor R6, the other end of the resistor R6 is used as the first control end of the power supply control circuit and is connected with the controller, and the drain electrode of the PMOS pipe Q1 is used as the output end of the power supply control circuit;
one end of a resistor R7 is connected to an output end of a first voltage stabilizing circuit DC1, the other end of the resistor R7 is grounded through a capacitor C3, a common connection point between a resistor R7 and a capacitor C3 is connected to a base electrode of a triode Q5 through the resistor R11, an emitter electrode of the triode Q5 is grounded through a capacitor C4, a collector electrode of the triode Q5 is connected to an output end of a first voltage stabilizing circuit DC1 through a resistor R8, an emitter electrode of the triode Q5 is connected to an anode electrode of a light emitting diode of the optocoupler Q4 through a resistor R9, a cathode electrode of the light emitting diode of the optocoupler Q4 is grounded, an emitter electrode of a phototriode of the optocoupler Q4 is grounded, a collector electrode of the phototriode of the optocoupler Q4 is connected to a cathode of a diode D1, an anode electrode of the diode D1 is connected to one end of a resistor R10, and the other end of the resistor R10 is connected to a controller as a detection output end.
Further, the wireless transmission module is a mobile communication module or a power wireless private network module.
Further, still include bluetooth module, the controller passes through bluetooth module and intelligent Mobile terminal communication connection.
And the input end of the voice prompter is connected with the voice control output end of the controller.
Furthermore, the positioning module is a GPS positioning module or a Beidou positioning module.
Further, the battery unit includes lithium cell and charge and discharge management circuit, charge and discharge management circuit's input is connected in peripheral hardware power adapter, and charge and discharge management circuit's output is connected in the anodal of lithium cell, and charge and discharge management circuit still communicates with controller and is connected.
The utility model has the advantages that: through the utility model discloses, can carry out the accuracy to the electric current and the voltage index of arrester and gather on the one hand, on the other hand can supervise the staff who reachs the test site to report an emergency and ask for help or increased vigilance when appointed personnel mismatch in staff and the operation order, thereby prevent because there is the validity of test potential safety hazard and assurance test data in personnel's problem.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of a power supply control circuit of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings in the specification:
the utility model provides a lightning arrester live-line test system, which comprises a controller, a wireless transmission module, an isolation amplification acquisition module, a memory, a power supply control unit, a positioning module, a fingerprint acquisition device, a touch display and a wireless acquisition device;
the power supply control unit comprises a storage battery unit, a power supply control circuit, a first voltage stabilizing circuit DC1 and a second voltage stabilizing circuit DC 2;
the power supply output end of the storage battery unit is connected with the input end of the power supply control circuit, the output end of the power supply control circuit is connected with the input end of the first voltage stabilizing circuit DC1, the output end of the first voltage stabilizing circuit DC1 is connected with the input end of the second voltage stabilizing circuit DC2, and the second voltage stabilizing circuit DC2 supplies power to the controller and the memory; the output end of the first voltage stabilizing circuit DC1 supplies power to the positioning module, the fingerprint collector, the touch display, the wireless transmission module and the isolation amplifier;
the controller passes through wireless transmission module and upper monitoring host communication connection, the input of isolating and amplifying acquisition module is connected with the voltage transformer's of arrester output, the output of isolating and amplifying acquisition module is connected with the input of controller, the current acquisition unit communication connection of wireless collector and arrester, the output and the controller of wireless collector are connected, controller and memory communication connection, locating module's output and controller are connected, fingerprint collector's output and controller are connected, controller and touch display communication connection. Through above-mentioned structure, the aspect can carry out accurate collection to the electric current and the voltage index of arrester, and on the other hand can supervise the staff who arrives the test site to report an emergency and ask for help or increased vigilance when appointed personnel mismatch in staff and the operation order, thereby prevent because there is the validity of test potential safety hazard and assurance test data in personnel's problem. The wireless collector adopts the existing structure and receives a leakage current signal of the lightning arrester, the current signal is sent by a current signal collecting module, the current collecting module comprises a current transformer, a filtering amplifying circuit, an analog-to-digital conversion module, a controller and a wireless module (Bluetooth, infrared, ZigBee and the like), the wireless collector is used for filtering, demodulating and outputting the received signal to the controller, and the isolating amplifying collecting module adopts the existing circuit and is used for isolating, amplifying, filtering and analog-to-digital conversion processing voltage signals output by the voltage transformer; the first voltage stabilizing circuit DC1 and the second voltage stabilizing circuit DC2 both adopt the existing voltage stabilizing circuits, the first voltage stabilizing circuit DC1 outputs 5V direct current, the second voltage stabilizing circuit DC2 outputs 3.3V direct current, and the controller adopts the existing single chip microcomputer.
In this embodiment, the power supply control circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a triode Q2, a triode Q3, a triode Q5, a PMOS transistor Q1, an optocoupler Q4, a self-reset switch S1, and a diode D1;
one end of a resistor R1 serving as a power supply input end of the power supply control circuit is connected to a power supply output end of the storage battery unit, the other end of the resistor R1 is connected with a source electrode of a PMOS tube Q1, a source electrode of a PMOS tube Q1 is connected with a drain electrode of a PMOS tube Q1 through a self-reset switch S1, a source electrode of the PMOS tube Q1 is connected with a grid electrode of a PMOS tube Q1 through a resistor R2, a grid electrode of a PMOS tube Q1 is connected with a collector electrode of a triode Q2 through a resistor R3, an emitter electrode of a triode Q2 is grounded, a base electrode of a triode Q2 is grounded through a resistor R5, a base electrode of a triode Q2 is grounded through a capacitor C2, a base electrode of the triode Q2 is connected with a drain electrode of the PMOS tube Q2 through a resistor R2, a drain electrode of the PMOS tube Q2 is connected with a common connection point between the base electrode of the capacitor C2 and the base electrode of the triode Q2, a collector electrode of the triode Q2 is grounded, the base electrode of the triode Q3 is connected with one end of the resistor R6, the other end of the resistor R6 is used as the first control end of the power supply control circuit and is connected with the controller, and the drain electrode of the PMOS pipe Q1 is used as the output end of the power supply control circuit;
one end of a resistor R7 is connected to an output end of a first voltage stabilizing circuit DC1, the other end of the resistor R7 is grounded through a capacitor C3, a common connection point between a resistor R7 and a capacitor C3 is connected to a base electrode of a triode Q5 through the resistor R11, an emitter electrode of the triode Q5 is grounded through a capacitor C4, a collector electrode of the triode Q5 is connected to an output end of a first voltage stabilizing circuit DC1 through a resistor R8, an emitter electrode of the triode Q5 is connected to an anode electrode of a light emitting diode of the optocoupler Q4 through a resistor R9, a cathode electrode of the light emitting diode of the optocoupler Q4 is grounded, an emitter electrode of a phototriode of the optocoupler Q4 is grounded, a collector electrode of the phototriode of the optocoupler Q4 is connected to a cathode of a diode D1, an anode electrode of the diode D1 is connected to one end of a resistor R10, and the other end of the resistor R10 is connected to a controller as a detection output end. The capacitor C3 is used for delaying time, the delaying time is jointly determined by the resistor R7, the resistor R11 and the capacitor C3, the delaying time is longer than or equal to the time needed by the controller to start initialization, when the time reaches the scene, the manual control self-reset switch S1 is closed, so that the PMOS tube Q1 is conducted, the capacitor C3 starts to charge, and power is supplied to the subsequent time through the DC1 and the DC2, the controller prompts a worker to input fingerprint information after the initialization is completed, the controller acquires the current position information in real time, when the capacitor C4 is charged, the optocoupler Q4 is conducted, so that the level of the terminal of the controller connected with the resistor R10 is reduced, the controller identifies the low level as the fingerprint input cut-off time, if the worker does not input fingerprint information before the time or the fingerprint information input for multiple times is not matched with the written information of the specified worker, the controller generates alarm information, the alarm information comprises fingerprint information (or fingerprint-free information input information) with current input errors and current position information, the fingerprint information and the current position information are sent to the upper monitoring host, and meanwhile, the controller outputs high level to the base electrode of the triode Q3 through a terminal connected with the resistor R6 to enable the triode Q3 to be conducted, so that the base voltage of the triode Q2 is reduced, the PMOS pipe Q1 is cut off, and the whole system stops working. When the test is finished and the active shutdown is needed, a shutdown instruction is input through the touch display screen, and the PMOS tube Q1 is also turned off through the triode Q3.
In this embodiment, wireless transmission module is mobile communication module or the wireless private network module of electric power, mobile communication module adopts current 4G or 5G communication module, wireless private network module adopts current 2.4G wireless private network module of electric power, the controller passes through wireless transmission module with the information of acquireing in real time and transmits to the upper monitoring host computer, including the fingerprint information of input and the voltage of acquireing in real time, current information, and, after the test is accomplished, need the staff to input the task and accomplish the instruction, and input corresponding fingerprint through fingerprint collector, thereby ensure the validity of data.
In this embodiment, still include bluetooth module, the controller passes through bluetooth module and intelligent mobile terminal communication connection, through bluetooth module for test system can be with intelligent mobile terminal communication connection such as smart mobile phone, facilitates the use.
In this embodiment, still include voice prompt, voice prompt's input is connected with the speech control output of controller, through this voice prompt for remind when reminding the staff to input fingerprint information and mismatch.
In this embodiment, the positioning module is a GPS positioning module or a beidou positioning module, and is used to acquire real-time position information and ensure validity of acquired data.
In this embodiment, the battery unit includes lithium cell and charge and discharge management circuit, charge and discharge management circuit's input is connected in peripheral hardware power adapter, and charge and discharge management circuit's output is connected in the positive pole of lithium cell, and charge and discharge management circuit still communicates with the controller and is connected, and charge and discharge management circuit adopts current lithium cell charge and discharge management circuit for charge and the state of charge to the lithium cell detect and input to the controller in, carry out corresponding demonstration through the touch display.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (7)
1. The utility model provides a novel electrified test system of arrester which characterized in that: the device comprises a controller, a wireless transmission module, an isolation amplification acquisition module, a memory, a power supply control unit, a positioning module, a fingerprint acquisition device, a touch display and a wireless acquisition device;
the power supply control unit comprises a storage battery unit, a power supply control circuit, a first voltage stabilizing circuit DC1 and a second voltage stabilizing circuit DC 2;
the power supply output end of the storage battery unit is connected with the input end of the power supply control circuit, the output end of the power supply control circuit is connected with the input end of the first voltage stabilizing circuit DC1, the output end of the first voltage stabilizing circuit DC1 is connected with the input end of the second voltage stabilizing circuit DC2, and the second voltage stabilizing circuit DC2 supplies power to the controller and the memory; the output end of the first voltage stabilizing circuit DC1 supplies power to the positioning module, the fingerprint collector, the touch display, the wireless transmission module and the isolation amplifier;
the controller passes through wireless transmission module and upper monitoring host communication connection, the input of isolating and amplifying acquisition module is connected with the voltage transformer's of arrester output, the output of isolating and amplifying acquisition module is connected with the input of controller, the current acquisition unit communication connection of wireless collector and arrester, the output and the controller of wireless collector are connected, controller and memory communication connection, locating module's output and controller are connected, fingerprint collector's output and controller are connected, controller and touch display communication connection.
2. The novel live lightning arrester testing system according to claim 1, characterized in that: the power supply control circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a triode Q2, a triode Q3, a triode Q5, a PMOS tube Q1, an optocoupler Q4, a self-reset switch S1 and a diode D1;
one end of a resistor R1 serving as a power supply input end of the power supply control circuit is connected to a power supply output end of the storage battery unit, the other end of the resistor R1 is connected with a source electrode of a PMOS tube Q1, a source electrode of a PMOS tube Q1 is connected with a drain electrode of a PMOS tube Q1 through a self-reset switch S1, a source electrode of the PMOS tube Q1 is connected with a grid electrode of a PMOS tube Q1 through a resistor R2, a grid electrode of a PMOS tube Q1 is connected with a collector electrode of a triode Q2 through a resistor R3, an emitter electrode of a triode Q2 is grounded, a base electrode of a triode Q2 is grounded through a resistor R5, a base electrode of a triode Q2 is grounded through a capacitor C2, a base electrode of the triode Q2 is connected with a drain electrode of the PMOS tube Q2 through a resistor R2, a drain electrode of the PMOS tube Q2 is connected with a common connection point between the base electrode of the capacitor C2 and the base electrode of the triode Q2, a collector electrode of the triode Q2 is grounded, the base electrode of the triode Q3 is connected with one end of the resistor R6, the other end of the resistor R6 is used as the first control end of the power supply control circuit and is connected with the controller, and the drain electrode of the PMOS pipe Q1 is used as the output end of the power supply control circuit;
one end of a resistor R7 is connected to an output end of a first voltage stabilizing circuit DC1, the other end of the resistor R7 is grounded through a capacitor C3, a common connection point between a resistor R7 and a capacitor C3 is connected to a base electrode of a triode Q5 through the resistor R11, an emitter electrode of the triode Q5 is grounded through a capacitor C4, a collector electrode of the triode Q5 is connected to an output end of a first voltage stabilizing circuit DC1 through a resistor R8, an emitter electrode of the triode Q5 is connected to an anode electrode of a light emitting diode of the optocoupler Q4 through a resistor R9, a cathode electrode of the light emitting diode of the optocoupler Q4 is grounded, an emitter electrode of a phototriode of the optocoupler Q4 is grounded, a collector electrode of the phototriode of the optocoupler Q4 is connected to a cathode of a diode D1, an anode electrode of the diode D1 is connected to one end of a resistor R10, and the other end of the resistor R10 is connected to a controller as a detection output end.
3. The novel live lightning arrester testing system according to claim 1, characterized in that: the wireless transmission module is a mobile communication module or a power wireless private network module.
4. The novel live lightning arrester testing system according to claim 1, characterized in that: the intelligent mobile terminal is characterized by further comprising a Bluetooth module, and the controller is in communication connection with the intelligent mobile terminal through the Bluetooth module.
5. The novel live lightning arrester testing system according to claim 1, characterized in that: the voice prompt device is characterized by further comprising a voice prompt device, wherein the input end of the voice prompt device is connected with the voice control output end of the controller.
6. The novel live lightning arrester testing system according to claim 1, characterized in that: the positioning module is a GPS positioning module or a Beidou positioning module.
7. The novel live lightning arrester testing system according to claim 1, characterized in that: the battery unit includes lithium cell and charge and discharge management circuit, charge and discharge management circuit's input is connected in peripheral hardware power adapter, and charge and discharge management circuit's output is connected in the positive pole of lithium cell, and charge and discharge management circuit still with controller communication connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122290325.6U CN216013540U (en) | 2021-09-22 | 2021-09-22 | Novel lightning arrester live test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122290325.6U CN216013540U (en) | 2021-09-22 | 2021-09-22 | Novel lightning arrester live test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216013540U true CN216013540U (en) | 2022-03-11 |
Family
ID=80591490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122290325.6U Active CN216013540U (en) | 2021-09-22 | 2021-09-22 | Novel lightning arrester live test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216013540U (en) |
-
2021
- 2021-09-22 CN CN202122290325.6U patent/CN216013540U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203324380U (en) | Direct-current source system insulation monitoring apparatus and monitoring host thereof | |
| CN105785118A (en) | Simulated intelligent electric energy meter | |
| CN104805449A (en) | Device and system for intelligently detecting protection potential state of underground steel pipeline | |
| CN102592403B (en) | Microcomputer eyesight protecting voice prompter | |
| CN109459624A (en) | Portable high-pressure equipment fault positioning device and localization method based on voice recognition | |
| CN108226593B (en) | Electric energy meter and electricity larceny prevention detection method thereof | |
| CN108760032A (en) | A kind of noise detection apparatus based on wireless transmission | |
| CN205540221U (en) | Power station remote monitering system based on thing networking | |
| CN209208784U (en) | A kind of railway signals equipment mobile monitoring device based on DSP | |
| CN216013540U (en) | Novel lightning arrester live test system | |
| CN204155435U (en) | A kind of wireless temperature acquisition system | |
| CN203630318U (en) | Test system for power system switching power supply module | |
| CN108387310A (en) | It is a kind of based on solar powered noise level monitor | |
| CN104614627A (en) | Portable DC leakage detection positioning device and detection positioning method | |
| CN204536461U (en) | A kind of movable DC detection of electrical leakage positioning equipment | |
| CN212845645U (en) | Charging pile electric energy data real-time acquisition and uploading system | |
| CN211878142U (en) | Monitoring sensor for intelligently monitoring power equipment power supply voltage and current | |
| CN210401586U (en) | Transformer substation relay calibrating device and system | |
| CN211554121U (en) | Intelligence electroscope with locate function | |
| CN110907760A (en) | Electric power intelligent safety tool on-site supervision and management system | |
| CN215953805U (en) | Low-voltage system | |
| CN204287379U (en) | CT polarity tester | |
| CN214799042U (en) | Industrial alternating current monitoring and management system | |
| CN216133125U (en) | Double-channel device for detecting alternating current entering direct current system | |
| CN219107130U (en) | Hydropower plant monitoring disc system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: Super high voltage branch of State Grid Chongqing Electric Power Company Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee before: STATE GRID CORPORATION OF CHINA Patentee before: State Grid Chongqing Electric Power Company maintenance branch |