CN213337872U - Online insulation monitoring device - Google Patents
Online insulation monitoring device Download PDFInfo
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- CN213337872U CN213337872U CN202021213198.9U CN202021213198U CN213337872U CN 213337872 U CN213337872 U CN 213337872U CN 202021213198 U CN202021213198 U CN 202021213198U CN 213337872 U CN213337872 U CN 213337872U
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Abstract
The utility model discloses an online insulation monitoring device, including the body, its characterized in that: the inside control panel that is provided with of body, the singlechip is installed to the control panel upper end, control panel one side sets up receiving module, voltage transformer is installed to the control panel bottom, body bottom one side is equipped with the wiring end, can eliminate the measuring error that harmonic, sensor zero drift etc. brought effectively, has improved measuring precision and stability, has solved the accurate measurement problem of dielectric loss and resistive current under the on-the-spot interference environment effectively, possesses higher measurement accuracy and stronger interference killing feature, and the prediagnosis is reported an emergency and asked for help or increased vigilance effectively, prevents the emergence of malfunction disasters, reduces the loss, can reduce the maintenance cost simultaneously, reduces the fault rate, reduces equipment shut down time.
Description
Technical Field
The utility model relates to a monitoring devices field, in particular to online insulation monitoring device.
Background
The on-line monitoring device is a device capable of monitoring the insulation state of a high-voltage power cable on line, provides effective information for diagnosing early defects and accident potential of the cable, controlling sudden insulation accidents and monitoring the insulation performance of electrical equipment, directly influences the safe and reliable operation of the equipment, and is used for measuring the characteristic parameters of the electrical equipment by using the operating voltage of a system in the operating state of the electrical equipment. However, the problems of the precise measurement of the dielectric loss and the resistive current in the field interference environment and the problems of inaccurate measurement precision and instability caused by measurement errors caused by harmonic waves, sensor zero drift and the like exist.
Therefore, it is necessary to develop an in-line insulation monitoring device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an online insulation monitoring device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an online insulation monitoring device, includes the body, its characterized in that: the body is internally provided with a control panel, a single chip microcomputer is installed at the upper end of the control panel, a receiving module is arranged on one side of the control panel, a voltage transformer is installed at the bottom end of the control panel, and a wiring end is arranged on one side of the bottom end of the body.
Preferably, a display screen is arranged on one side of the body, an indicator lamp is installed at the bottom end of the display screen, a buzzer is arranged at the lower end of the indicator lamp, and a key is arranged on one side of the buzzer.
Preferably, the display screen, the buzzer and the keys are all in linear connection with the control panel.
Preferably, the signal transmission line is connected to the wiring end linearly, signal transmission line connects on one side and detects the leakage current sensor, detect the neutral shielded wire of three-phase cable of connecting of leakage current sensor one side, and one side connects the ground, three-phase cable is connected to neutral shielded wire one side of three-phase cable.
The utility model discloses a technological effect and advantage:
the utility model discloses can eliminate the measuring error that harmonic, sensor zero drift etc. brought effectively, improve measuring precision and stability, solve dielectric loss and resistive current's accurate measurement problem under the site disturbance environment effectively, possess higher measurement accuracy and stronger interference killing feature, the prediagnosis is reported an emergency and asked for help or increased vigilance effectively, prevents the emergence of fault disaster, reduces the loss, can reduce the maintenance cost simultaneously, reduces the fault rate, reduces equipment outage time.
Drawings
Fig. 1 is a sectional view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a schematic diagram of the present invention.
Fig. 4 is a schematic view of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides an on-line insulation monitoring device as shown in the figure, including body 1, its characterized in that: the improved multifunctional electric cooker is characterized in that a control panel 7 is arranged inside the body 1, the single chip microcomputer 6 is installed at the upper end of the control panel 7, a receiving module 8 is arranged on one side of the control panel 7, a voltage transformer 9 is installed at the bottom end of the control panel 7, and a wiring end 10 is arranged on one side of the bottom end of the body 1.
Further, in the above technical solution, a display screen 2 is arranged on one side of the body 1, an indicator lamp 3 is mounted at the bottom end of the display screen 2, a buzzer 5 is arranged at the lower end of the indicator lamp 3, and a button 4 is arranged on one side of the buzzer 5;
further, in the above technical solution, the display screen 2, the buzzer 5 and the key 4 are linearly connected to the control board 7;
further, in the above technical solution, the display screen 2, the buzzer 5 and the key 4 are all linearly connected to a control board 7.
Furthermore, in the above technical solution, the terminal 10 is linearly connected to a signal transmission line 11, one side of the signal transmission line 11 is connected to a leakage current detection sensor 12, one side of the leakage current detection sensor 12 is connected to a neutral shielding line 13 of a three-phase cable, and one side of the neutral shielding line 13 of the three-phase cable is connected to a ground 15, and one side of the neutral shielding line 13 of the three-phase cable is connected to a three-phase cable 14.
The working principle is as follows: when the system normally operates, the three phases are balanced, the neutral shielded wire of the three-phase cable has no current at the moment, and the current detected by the sensor is zero. The device transmits data to obtain normal system insulation. When the three-phase system is unbalanced due to the skin breaking, aging and defects of the outgoing cable, the neutral shielding wire can generate abnormal current, and the sensor detects the magnitude of the abnormal current. The cable insulation damage degree is obtained by comparing data in normal operation with abnormal current of the single chip microcomputer through the transmission line to be transmitted to a receiving end of the device (the transmission line adopts a three-layer shielding interference line, so that the current value is not interfered by external factors such as environment, medium, harmonic waves and the like). Sending out a buzzing alarm, and eliminating the defect after the operator knows the alarm information
It should be noted that: the high-precision micro-current sensor is adopted, so that the monitoring precision and linearity can be fully ensured;
the electromagnetic impact resistance and the power grid operation impact resistance are strong;
the dynamic diagnosis mechanism of synchronous measurement, relative comparison and trend judgment is adopted, so that the running and diagnosis reliability of the monitoring system is improved;
the weak leakage current acquisition technology, the EMC technology, the computer technology and the communication technology are applied to high-voltage engineering, and the insulation condition of the high-voltage power cable is reflected by accurate indexes.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (3)
1. An online insulation monitoring device, includes body (1), its characterized in that: body (1) inside control panel (7) that is provided with, singlechip (6) are installed to control panel (7) upper end, control panel (7) one side sets up receiving module (8), voltage transformer (9) are installed to control panel (7) bottom, body (1) bottom one side is equipped with wiring end (10), wiring end (10) linear connection signal transmission line (11), signal transmission line (11) one side is connected and is detected leakage current sensor (12), detect leakage current sensor (12) one side and connect three-phase cable neutral shielded wire (13), and one side connects earth (15), three-phase cable (14) are connected to three-phase cable neutral shielded wire (13) one side.
2. The on-line insulation monitoring device of claim 1, wherein: body (1) one side is provided with display screen (2), pilot lamp (3) are installed to display screen (2) bottom, pilot lamp (3) lower extreme is equipped with bee calling organ (5), bee calling organ (5) one side is equipped with button (4).
3. The on-line insulation monitoring device of claim 2, wherein: the display screen (2), the buzzer (5) and the keys (4) are all connected with a control panel (7) in a linear mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213198.9U CN213337872U (en) | 2020-06-28 | 2020-06-28 | Online insulation monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213198.9U CN213337872U (en) | 2020-06-28 | 2020-06-28 | Online insulation monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213337872U true CN213337872U (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021213198.9U Active CN213337872U (en) | 2020-06-28 | 2020-06-28 | Online insulation monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN213337872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295967A (en) * | 2021-06-24 | 2021-08-24 | 长沙理工大学 | Cable insulation state monitoring method under multi-characteristic quantity synergistic effect |
-
2020
- 2020-06-28 CN CN202021213198.9U patent/CN213337872U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295967A (en) * | 2021-06-24 | 2021-08-24 | 长沙理工大学 | Cable insulation state monitoring method under multi-characteristic quantity synergistic effect |
| CN113295967B (en) * | 2021-06-24 | 2022-03-08 | 长沙理工大学 | Cable insulation state monitoring method under multi-characteristic quantity synergistic effect |
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