CN214067305U - Be used for arrester resistive current test voltage to connect and get display device - Google Patents
Be used for arrester resistive current test voltage to connect and get display device Download PDFInfo
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- CN214067305U CN214067305U CN202120116213.6U CN202120116213U CN214067305U CN 214067305 U CN214067305 U CN 214067305U CN 202120116213 U CN202120116213 U CN 202120116213U CN 214067305 U CN214067305 U CN 214067305U
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 34
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- 238000009434 installation Methods 0.000 description 2
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Abstract
The utility model discloses a be used for arrester resistive current test voltage to connect and get display device, include: the device comprises a secondary voltage isolation module, a main controller, an indicator light module, a communication module and a power supply module; the secondary voltage isolation module is connected with the indicator lamp module in series; the primary input end of the secondary voltage isolation module is connected with a three-phase line of the lightning arrester, the secondary output end of the secondary voltage isolation module is connected with the main controller, the lightning arrester is further connected with the indicator lamp module, the power supply module is connected with the main controller and the communication module, and the main controller is connected with the communication module. The utility model discloses avoid a lot of clamps to get voltage can lean on to connect and get the looks, reduce the operation risk, reduced a lot of and connect the risk of getting secondary voltage, guarantee personal and equipment safety improves maintenance quality and fortune and examines the ability.
Description
Technical Field
The utility model relates to a lightning arrester technical field, concretely relates to be used for lightning arrester resistive current test voltage to connect and get display device.
Background
For the lightning arrester in operation, the resistive component of the leakage current of the lightning arrester has obvious characteristics on the aging and internal moisture defects of the lightning arrester resistor disc. Therefore, the lightning arrester resistive current test is used as an important detection means for knowing and mastering the actual operation condition of the lightning arrester. According to the regulations of Q/GDW 1168 and 2013 'State overhaul test procedures for Power Transmission and transformation Equipment' 5.16 section of the metal oxide arrester: the project detection period 110(66) kV and above: for 1 year.
The voltage signal of the testing phase needs to be collected in the lightning arrester resistive current test, the testing instrument uses the jointing clamp to take the secondary voltage from the voltage transformer metering voltage air switch, the contact area of the jointing clamp is small when the secondary voltage is taken, and the problems that the voltage signal is not stably taken and the like often occur in the testing process are caused.
And whether the voltage signal is successfully accessed can not be visually judged by a tester, and whether the voltage signal is successfully accessed can only be judged after the voltage signal is tested by a test instrument host, so that the timeliness of the live-line detection of the lightning arrester is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide one kind and be used for arrester resistive current test voltage to connect and get display device, reduce the work risk, improve work efficiency, in time master the equipment situation.
The utility model provides a technical scheme that its technical problem adopted is:
a voltage access display device for lightning arrester resistive current test comprises: the device comprises a secondary voltage isolation module, a main controller, an indicator light module, a communication module and a power supply module; the secondary voltage isolation module is connected with the indicator lamp module in series; the primary input end of the secondary voltage isolation module is connected with a three-phase line of the lightning arrester, the secondary output end of the secondary voltage isolation module is connected with the main controller, the lightning arrester is further connected with the indicator lamp module, the power supply module is connected with the main controller and the communication module, and the main controller is connected with the communication module.
As a further technical solution of the utility model is: the secondary voltage isolation module comprises a first voltage isolator, a second voltage isolator and a third voltage isolator, wherein a primary input end of the first voltage isolator is connected with an A phase line of the arrester through a first resistor, a primary end of the second voltage isolator is connected with a B phase line of the arrester through a second resistor, a primary end of the third voltage isolator is connected with a C phase line of the arrester through a third resistor, and secondary side output of the first voltage isolator, the second voltage isolator and the third voltage isolator is connected with an input end of the main controller through a current-limiting resistor.
As a further technical solution of the utility model is: the communication module comprises a communication controller, a first optical coupling module, a second optical coupling module and a third optical coupling module, the input end of the communication controller is connected with the first optical coupling module and the second optical coupling module, the output end of the communication controller is connected with the third optical coupling module, and the third optical coupling module is connected with the main controller.
As a further technical solution of the utility model is: the main controller adopts a singlechip of ATMEGA64 model.
As a further technical solution of the utility model is: the communication module adopts a communication control chip with the model number of 65LBC 184.
As a further technical solution of the utility model is: the power supply module comprises a first power supply module and a second power supply module, the first power supply module outputs 5V voltage through the first voltage stabilizer, the second power supply module is connected with the output end of the first power supply module, and the second power supply module outputs 3.3V voltage.
As a further technical solution of the utility model is: the indicating lamp module comprises three light-emitting diodes which are respectively connected in series with a voltage limiting resistor and connected in series on the three-phase line.
As a further technical solution of the utility model is: the light emitting diode adopts a monochromatic light emitting diode with an insulating sheath.
The utility model has the advantages that:
the utility model is used for the sky voltage that opens of secondary during arrester resistive current test connects and gets reliable display device, just can show before possible the test that the secondary voltage connects and gets successfully or not, utilize three emitting diode respectively with A, B, C three-phase voltage input series connection, whether shine through emitting diode and judge to connect and get voltage signal reliable or not, possible three-phase separately shows, it can connect and get the looks to avoid a lot of clamps to get voltage, reduce the operation risk, reach voltage reliable and connect and get, the test is stable correct, reduce the purpose that the instrument harmed. The device is suitable for various types of lightning arrester live detectors and different operation environments, reduces the risk of receiving and taking secondary voltage for many times, ensures personal and equipment safety, and improves the overhauling quality and the operation and inspection capacity.
Drawings
Fig. 1 is a structural diagram of a voltage access display device for lightning arrester resistive current test according to the present invention;
fig. 2 is a circuit diagram of the main controller provided by the present invention;
fig. 3 is a circuit diagram of a secondary voltage isolation module provided by the present invention;
fig. 4 is a circuit diagram of a first power supply module according to the present invention;
fig. 5 is a circuit diagram of a second power supply module according to the present invention;
fig. 6 is a circuit diagram of a communication controller according to the present invention;
fig. 7 is a circuit diagram of a first optocoupler module according to the present invention;
fig. 8 is a circuit diagram of a second optocoupler module according to the present invention;
fig. 9 is a circuit diagram of a third optocoupler module according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Referring to fig. 1, a structure diagram of a voltage access display device for the resistive current test of a lightning arrester is provided;
as shown in fig. 1, a voltage access display device for lightning arrester resistive current test includes: the device comprises a secondary voltage isolation module, a main controller, an indicator light module, a communication module and a power supply module; the secondary voltage isolation module is connected with the indicator lamp module in series; the primary input end of the secondary voltage isolation module is connected with the lightning arrester, the secondary output end of the secondary voltage isolation module is connected with the main controller, the lightning arrester is further connected with the indicator lamp module, the power supply module is connected with the main controller and the communication module, and the main controller is connected with the communication module.
Referring to fig. 2, in the embodiment of the utility model, main control unit U4 adopts the singlechip of ATMEGA64 model, secondary voltage enters into control chip U4 after introducing the isolator through PT1 ~ PT3 miniature precision mutual-inductor secondary isolation, carry out the AD conversion by inside ADC, the conversion result calculates the real part of three-phase voltage through FFT transform, imaginary part, reachs the effective value of introducing the PT secondary voltage through calculating, 1, 3, 5, 7 harmonics, phase angle etc..
Referring to fig. 3, a circuit structure diagram of the secondary voltage isolation module provided by the present invention is shown;
as shown in fig. 3, the secondary voltage isolation module includes a first voltage isolator, a second voltage isolator and a third voltage isolator, a primary input end of the first voltage isolator is connected to the a-phase line of the lightning arrester through a first resistor R40, a primary end of the second voltage isolator is connected to the B-phase line of the lightning arrester through a second resistor R62, a primary end of the third voltage isolator is connected to the C-phase line of the lightning arrester through a third resistor R68, and secondary side outputs of the first voltage isolator, the second voltage isolator and the third voltage isolator are connected to an input end of the main controller through current limiting resistors R90, R36 and R37.
A, B, C three-phase access conditions are indicated by L101-L103 respectively, the corresponding phase indicator lights are turned on when the normal access is carried out, and the corresponding phase indicator lights are turned off when the normal access is not carried out due to reasons such as virtual access and disconnection. The hardware L101-L103 directly collects the access voltage, and the three-phase access condition can be immediately detected when the device is not started to work.
Referring to fig. 4 and 5, wherein fig. 4 is a circuit diagram of a first power supply module provided by the present invention, and fig. 5 is a circuit diagram of a second power supply module provided by the present invention;
referring to fig. 4 and 5, the power supply module includes a first power supply module and a second power supply module, the first power supply module outputs 5V voltage through a first voltage stabilizer U1, the 5V voltage is used for supplying power to the communication module, the second power supply module is connected with an output end of the first power supply module, and the second power supply module outputs 3.3V voltage through a second voltage stabilizer U2 to supply power to the main controller and the communication module.
Referring to fig. 3, the indicator light module includes three light emitting diodes, and the three light emitting diodes are respectively connected in series with the voltage limiting resistor and in series on the three-phase line. In order to prevent the diode from being damaged, the personal safety of detection personnel is endangered; the service life of the instrument is prolonged, and the diode is provided with an insulating sheath which is made of a material with waterproof, flame retardant, corrosion resistant, insulating and wear resistant properties. The single color light emitting diode is used for the diode to facilitate the observation of whether the voltage access is reliable or not. Considering the removable used repeatedly of diode, emitting diode adopts detachable design, does not receive equipment appearance and installation environment influence, and the installation is dismantled convenient and fast, can dismantle the use repeatedly.
Referring to fig. 6 to 9, wherein fig. 6 is a circuit diagram of a communication controller according to the present invention; fig. 7 is a circuit diagram of a first optocoupler module according to the present invention; fig. 8 is a circuit diagram of a second optocoupler module according to the present invention; fig. 9 is a circuit diagram of a third optocoupler module according to the present invention;
as shown in fig. 6 to 9, the communication module includes a communication controller U5, a first optical coupler module U6, a second optical coupler module U8 and a third optical coupler module U10, an input end of the communication controller U5 is connected to the first optical coupler module U6 and the second optical coupler module U8, an output end of the communication controller U5 is connected to the third optical coupler module U10, and the third optical coupler module U10 is connected to the main controller U4. The communication controller U5 adopts the RS485 transceiver of model 65LBC184, and first opto-coupler module and second opto-coupler module adopt the optical coupler of 6N137 model to be connected with the input of RS485 transceiver, and the third opto-coupler module adopts the photoelectric coupler of model 521-1 to be connected with the output of RS485 transceiver, and the third opto-coupler module is connected with main control unit's communication interface.
The utility model provides a lightning arrester resistive current test voltage connects and gets display device, a secondary sky is opened voltage and is connect and get reliable display device when being used for lightning arrester resistive current test, just can show before accomplishing the test that secondary voltage connects and gets successfully or not, utilize three emitting diode respectively with A, B, C three-phase voltage input series connection, whether shine through emitting diode and judge to connect and get voltage signal reliable or not, accomplish that the three-phase divides the demonstration, it can draw by the connecing and get the looks to avoid a lot of clamps to get voltage, reduce the operation risk, reach voltage reliable and connect and get, the test is stable correct, reduce the purpose of instrument damage.
The device is suitable for various types of lightning arrester live detectors and different operation environments, reduces the risk of receiving and taking secondary voltage for many times, ensures personal and equipment safety, and improves the overhauling quality and the operation and inspection capacity. The utility model discloses simple structure, convenient to use easily carries low in production cost.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (8)
1. A voltage access display device for lightning arrester resistive current test is characterized by comprising: the device comprises a secondary voltage isolation module, a main controller, an indicator light module, a communication module and a power supply module; the secondary voltage isolation module is connected with the indicator lamp module in series; the primary input end of the secondary voltage isolation module is connected with a three-phase line of the lightning arrester, the secondary output end of the secondary voltage isolation module is connected with the main controller, the lightning arrester is further connected with the indicator lamp module, the power supply module is connected with the main controller and the communication module, and the main controller is connected with the communication module.
2. The voltage receiving and displaying device for the resistive current test of the lightning arrester according to claim 1, wherein the secondary voltage isolation module comprises a first voltage isolator, a second voltage isolator and a third voltage isolator, a primary input end of the first voltage isolator is connected with an a-phase line of the lightning arrester through a first resistor, a primary end of the second voltage isolator is connected with a B-phase line of the lightning arrester through a second resistor, a primary end of the third voltage isolator is connected with a C-phase line of the lightning arrester through a third resistor, and secondary side outputs of the first voltage isolator, the second voltage isolator and the third voltage isolator are connected with an input end of the main controller through a current limiting resistor.
3. The voltage receiving and displaying device for the arrester resistive current test according to claim 1, wherein the communication module comprises a communication controller, a first optical coupling module, a second optical coupling module and a third optical coupling module, an input end of the communication controller is connected with the first optical coupling module and the second optical coupling module, an output end of the communication controller is connected with the third optical coupling module, and the third optical coupling module is connected with the main controller.
4. The voltage access display device for the arrester resistive current test according to claim 1, wherein the main controller is a single chip microcomputer of ATMEGA64 type.
5. The voltage access and display device for the arrester resistive current test according to claim 1, wherein the communication module is a 65LBC184 communication control chip.
6. The voltage access display device for the arrester resistive current test according to claim 1, wherein the power supply module comprises a first power supply module and a second power supply module, the first power supply module outputs 5V voltage through a first voltage stabilizer, the second power supply module is connected with an output end of the first power supply module, and the second power supply module outputs 3.3V voltage.
7. The voltage access and display device for the resistive current test of the lightning arrester according to claim 1, wherein the indicator light module comprises three light emitting diodes, and the three light emitting diodes are respectively connected in series with a voltage limiting resistor and in series on a three-phase line.
8. The voltage access display device for the arrester resistive current test according to claim 7, wherein the light emitting diode is a single color light emitting diode with an insulating sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120116213.6U CN214067305U (en) | 2021-01-17 | 2021-01-17 | Be used for arrester resistive current test voltage to connect and get display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120116213.6U CN214067305U (en) | 2021-01-17 | 2021-01-17 | Be used for arrester resistive current test voltage to connect and get display device |
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| Publication Number | Publication Date |
|---|---|
| CN214067305U true CN214067305U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120116213.6U Active CN214067305U (en) | 2021-01-17 | 2021-01-17 | Be used for arrester resistive current test voltage to connect and get display device |
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| CN (1) | CN214067305U (en) |
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- 2021-01-17 CN CN202120116213.6U patent/CN214067305U/en active Active
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