CN115480139A - Transformer substation cable insulation state detection device and method - Google Patents
Transformer substation cable insulation state detection device and method Download PDFInfo
- Publication number
- CN115480139A CN115480139A CN202211420629.2A CN202211420629A CN115480139A CN 115480139 A CN115480139 A CN 115480139A CN 202211420629 A CN202211420629 A CN 202211420629A CN 115480139 A CN115480139 A CN 115480139A
- Authority
- CN
- China
- Prior art keywords
- cable
- insulation state
- display lamp
- state
- detection controller
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 238000009413 insulation Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000002159 abnormal effect Effects 0.000 claims abstract description 35
- 230000001960 triggered effect Effects 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 16
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention relates to the field of cable state detection, and particularly discloses a device and a method for detecting the insulation state of a cable of a transformer substation, wherein a flexible circuit board is wound on a cable connected with a detection controller by each current transformer, a connector and a state display lamp are arranged on the flexible circuit board, the state display lamp is connected with the connector, and the connector is connected with the detection controller; when the detection controller detects that the insulation state of the cable is abnormal through the current transformer, the state display lamp wound on the flexible circuit board on the corresponding cable is triggered to light. According to the invention, the cable abnormal indicating lamp is additionally arranged for the current transformer, and when a certain cable is abnormal in insulation state, the corresponding indicating lamp is simultaneously lightened, so that a maintainer can quickly and conveniently find the current transformer which detects the abnormal signal, and further quickly locate the cable which is abnormal in insulation state, thereby greatly improving the overhauling efficiency.
Description
Technical Field
The invention relates to the field of cable state detection, in particular to a device and a method for detecting the insulation state of a transformer substation cable.
Background
In a power grid system, a transformer substation occupies a large proportion, and the safe and reliable operation of the transformer substation is very important for the whole power grid. Partial cables of the transformer substation are laid underground, so that the cables are easily damaged due to the influence of environmental corrosion and the like, the insulation state is abnormal, and the phenomenon that the insulation state of the cables among electrical equipment in the transformer substation is abnormal due to long-time operation is avoided. The insulation state of a cable is a key factor influencing the reliable operation of a transformer substation, and in order to detect the insulation state of the cable of the transformer substation, a current scheme is to adopt a current transformer to sleeve the cable to detect the current of the cable in real time. When the current of a certain cable is detected to be abnormal, the insulation state is judged to be abnormal possibly, and a maintainer goes to the site to overhaul. However, when the overhaul personnel go to the field for overhaul, the overhaul personnel can only search abnormal cables in a plurality of current transformers according to the serial numbers of the current transformers in the alarm signals, which is very inconvenient, wastes time and labor and affects the overhaul efficiency.
Disclosure of Invention
In order to solve the problems, the invention provides a device and a method for maintaining the insulation state of a cable of a transformer substation.
In a first aspect, the technical scheme of the invention provides a transformer substation cable insulation state detection device, which comprises a detection controller and a plurality of current transformers, wherein a cable to be detected penetrates through input ends of the current transformers, output ends of the current transformers are connected with the detection controller through cables, a flexible circuit board is wound on each cable connected with the detection controller, a connector and a state display lamp are arranged on each flexible circuit board, the state display lamp is connected with the connector, and the connector is connected with the detection controller; when the detection controller detects that the insulation state of the cable is abnormal through the current transformer, the state display lamp on the flexible circuit board wound on the corresponding cable is triggered to be lightened.
Furthermore, a display lamp driving circuit is further arranged on the flexible circuit board, the input end of the display lamp driving circuit is connected with the connector, the output end of the display lamp driving circuit is connected with the state display lamp, the detection controller transmits a trigger signal to the display lamp driving circuit through the connector, and the display lamp driving circuit is triggered to drive the state display to be lightened.
Further, the display lamp driving circuit includes: the resistor R1, the resistor R2 and the triode Q1;
one end of the resistor R1 is connected with the connector, the other end of the resistor R1 is connected with the grid electrode of the triode Q1, the emitting electrode of the triode Q1 is grounded, and the collecting electrode of the triode Q1 is connected to the power supply voltage through the resistor R2 and the state display lamp.
Further, the state display lamp is a light emitting diode, the anode of the light emitting diode is connected with the power supply voltage, and the cathode of the light emitting diode is connected with one end of the resistor R2.
Furthermore, a plurality of state display lamps are arranged on the flexible circuit board and connected in parallel.
Further, at least one flexible circuit board is arranged on a cable connected with the current transformer and the detection controller.
Further, the device still includes wireless communication module, and wireless communication module is connected with the detection controller, and when the detection controller detected that the cable insulation state is unusual through current transformer, it sent alarm information to the maintainer to trigger wireless communication module.
Furthermore, the wireless communication module is a 5G chip, the 5G chip sends alarm signals to maintenance personnel in a short message mode, and the alarm signals comprise the serial numbers of the transformer substation and the serial numbers of the current transformers.
In a second aspect, a technical solution of the present invention provides a method for detecting an insulation state of a cable of a substation, including the following steps:
winding a flexible circuit board on a cable connected with the current transformer and the detection controller;
the current transformer detects the insulation state of the cable to be detected in real time;
when the insulation state of a certain cable to be detected is detected to be abnormal, the detection controller triggers a state display lamp on a flexible circuit board wound on the corresponding cable to be lightened.
Further, the method comprises the following steps:
when the insulation state of a certain cable to be detected is detected to be abnormal, the detection controller triggers the wireless communication module to send an alarm signal to a maintainer in a short message mode.
Compared with the prior art, the transformer substation cable insulation state detection device and method provided by the invention have the following beneficial effects: the flexible circuit board is wound on a cable connected with the current transformer and the detection controller, the state display lamp is arranged on the flexible circuit board, when the current transformer detects that the insulation state of the cable is abnormal, the detection controller controls the state display lamp current on the corresponding cable to indicate the current transformer, and then the abnormal cable is positioned. According to the invention, the cable abnormal indicator lamp is additionally arranged for the current transformer, when the insulation state of a certain cable is abnormal, the corresponding indicator lamp is simultaneously lightened, so that a maintainer can quickly and conveniently find the current transformer which detects the abnormal signal, and further quickly position the cable with the abnormal insulation state, the overhauling efficiency is greatly improved, and the cable abnormal insulation state indicator lamp is simple in structure, low in cost and easy to realize.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present application, the drawings used in the embodiments or technical solutions of the present application will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a substation cable insulation state detection device provided in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a flexible circuit board of a substation cable insulation state detection device according to an embodiment of the present invention.
Fig. 3 is a schematic flow chart of a method for detecting an insulation state of a cable of a substation according to an embodiment of the present invention.
In the figure, 1-a detection controller, 2-a current transformer, 3-a cable to be detected, 4-a cable, 5-a flexible circuit board, 6-a connector, 7-a status display lamp, 8-a display lamp driving circuit and 9-a wireless communication module.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Fig. 1 is a schematic structural diagram of a substation cable insulation state detection device provided by an embodiment of the present invention, and as shown in fig. 1, the device includes a detection controller 1 and a plurality of current transformers 2, a cable 3 to be detected is provided at an input end of the current transformer 2, and an output end of the current transformer 2 is connected to the detection controller 1 through a cable 4.
In order to conveniently locate the cable 3 with abnormal insulation state, the flexible circuit board 5 is wound on the cable 4 connected between each current transformer 2 and the detection controller 1, the flexible circuit board 5 is provided with a connector 6 and a state display lamp 7, the state display lamp 7 is connected with the connector 6, and the connector 6 is connected with the detection controller 1. The current transformer 2 detects the insulation state of the cable 3 in real time, when a certain current transformer 2 detects that the insulation state of the cable 3 is abnormal, the detection controller 1 triggers the state display lamp 7 on the flexible circuit board 5 on the cable 4 connected with the current transformer 2 and the detection controller 1 to be lightened, and a maintainer can quickly position the abnormal cable 3 in the insulation state according to the lightened state display lamp 7.
Fig. 2 is a schematic structural diagram of the flexible circuit board 5 of this embodiment, in order to realize driving of the status display lamp 7, a display lamp driving circuit 8 is further disposed on the flexible circuit board 5, an input end of the display lamp driving circuit 8 is connected to the connector 6, an output end of the display lamp driving circuit is connected to the status display lamp 7, the detection controller 1 transmits a trigger signal to the display lamp driving circuit 8 through the connector 6, and the trigger display lamp driving circuit 8 drives the status display to light.
In some embodiments, the display lamp driving circuit 8 includes: resistance R1, resistance R2, triode Q1. One end of the resistor R1 is connected with the connector 6, the other end of the resistor R1 is connected with the grid electrode of the triode Q1, the emitting electrode of the triode Q1 is grounded, and the collecting electrode of the triode Q1 is connected to power supply voltage through the resistor R2 and the state display lamp 7. Wherein, the power supply voltage can be transmitted to the connector 6 by the detection controller 1 to be provided for the display lamp driving circuit 8.
The status display lamp 7 may be a light emitting diode, an anode of the light emitting diode is connected to the supply voltage, and a cathode of the light emitting diode is connected to one end of the resistor R2. For convenience of viewing, a plurality of light emitting diodes may be disposed on one flexible circuit board 5, and the plurality of light emitting diodes may be connected in parallel.
When the current transformer 2 detects that the insulation state of the cable 3 is abnormal, a high level is output to the resistor R1, the triode Q1 is conducted, the light-emitting diode is lightened, and a maintainer can locate the fault cable 3 according to the lightened light-emitting diode.
On the basis of the above embodiment, as a preferred embodiment, at least one flexible circuit board 5 is provided on the cable 4 connecting the current transformer 2 and the detection controller 1. For example, flexible circuit boards 5 are provided, one of which is wound around one end of the detection controller 1, and the other is wound around one end of the current transformer 2, so that a maintenance worker can quickly locate a fault position from both ends.
In addition, in some specific embodiments, wireless communication modules 9 and 7 are further arranged, the wireless communication module 9 is connected with the detection controller 1, and when the detection controller 1 detects that the insulation state of the cable 3 is abnormal through the current transformer 2, the wireless communication module 9 is triggered to send alarm information to a maintenance worker. As a preferred embodiment, a 5G chip is adopted as a wireless communication module 9, and a 5G chip sends alarm signals to maintainers in a short message mode, wherein the alarm signals comprise the serial number of a transformer substation and the serial number of the current transformer 2. When the insulation state of the cable 3 is abnormal, a maintainer can receive an alarm signal at any time and any place and process the abnormal state as soon as possible.
The above embodiments of the substation cable insulation state detection device are described in detail, and based on the substation cable insulation state detection device described in the above embodiments, the embodiments of the present invention also provide a substation cable insulation state detection method corresponding to the device.
Fig. 3 is a schematic flow chart of a method for detecting an insulation state of a substation cable according to an embodiment of the present invention, and as shown in fig. 3, the method includes the following steps.
S1, winding a flexible circuit board 5 on a cable 4 connected with a current transformer 2 and a detection controller 1.
And S2, detecting the insulation state of the cable 3 to be detected in real time by the current transformer 2.
And S3, when the insulation state of a certain cable 3 to be detected is detected to be abnormal, the detection controller 1 triggers the state display lamp 7 on the flexible circuit board 5 wound on the corresponding cable 4 to be lightened.
The maintainer can quickly locate the cable 3 with abnormal insulation state according to the lighted state display lamp 7.
Preferably, when the insulation state of a certain cable 3 to be detected is detected to be abnormal, the detection controller 1 triggers the wireless communication module 9 to send the alarm signal to the maintainer in a short message mode, so that the maintainer can receive the alarm signal anytime and anywhere and quickly make abnormal state processing.
The method for detecting the insulation state of the substation cable according to the present embodiment is implemented based on the foregoing device for detecting the insulation state of the substation cable, and therefore, the specific implementation of the method can be seen in the foregoing section of the embodiment of the device for detecting the insulation state of the substation cable, and therefore, the specific implementation thereof may refer to the description of the corresponding section embodiment, and will not be further described herein.
In addition, since the method for detecting the insulation state of the substation cable is implemented based on the device for detecting the insulation state of the substation cable, the function of the method corresponds to that of the device, and the description thereof is omitted here.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A transformer substation cable insulation state detection device comprises a detection controller and a plurality of current transformers, wherein cables to be detected penetrate through input ends of the current transformers, and output ends of the current transformers are connected with the detection controller through cables; when the detection controller detects that the insulation state of the cable is abnormal through the current transformer, the state display lamp wound on the flexible circuit board on the corresponding cable is triggered to light.
2. The substation cable insulation state detection device according to claim 1, wherein a display lamp driving circuit is further arranged on the flexible circuit board, an input end of the display lamp driving circuit is connected with the connector, an output end of the display lamp driving circuit is connected with the state display lamp, the detection controller transmits a trigger signal to the display lamp driving circuit through the connector, and the display lamp driving circuit is triggered to drive the state display to light.
3. The substation cable insulation state detection device according to claim 2, wherein the display lamp driving circuit includes: the resistor R1, the resistor R2 and the triode Q1;
one end of the resistor R1 is connected with the connector, the other end of the resistor R1 is connected with the grid electrode of the triode Q1, the emitting electrode of the triode Q1 is grounded, and the collecting electrode of the triode Q1 is connected to the power supply voltage through the resistor R2 and the state display lamp.
4. The substation cable insulation state detection device according to claim 3, wherein the state display lamp is a light emitting diode, an anode of the light emitting diode is connected to the supply voltage, and a cathode of the light emitting diode is connected to one end of the resistor R2.
5. The substation cable insulation state detection device according to claim 4, wherein a plurality of state display lamps are arranged on the flexible circuit board, and the plurality of state display lamps are connected in parallel.
6. The substation cable insulation state detection device according to claim 5, wherein at least one flexible circuit board is arranged on a cable connecting the current transformer and the detection controller.
7. The substation cable insulation state detection device according to any one of claims 1 to 6, further comprising a wireless communication module, wherein the wireless communication module is connected with the detection controller, and when the detection controller detects that the cable insulation state is abnormal through the current transformer, the wireless communication module is triggered to send alarm information to a maintenance worker.
8. The substation cable insulation state detection device according to claim 7, wherein the wireless communication module is a 5G chip, the 5G chip sends an alarm signal to a maintainer in a short message manner, and the alarm signal comprises a substation number and a current transformer number.
9. A method for detecting the insulation state of a cable of a transformer substation is characterized by comprising the following steps:
winding a flexible circuit board on a cable connected with the current transformer and the detection controller;
the current transformer detects the insulation state of the cable to be detected in real time;
when the insulation state of a certain cable to be detected is detected to be abnormal, the detection controller triggers a state display lamp on a flexible circuit board wound on a corresponding cable to be lightened.
10. The substation cable insulation state detection method of claim 9, characterized in that the method further comprises the steps of:
when the insulation state of a certain cable to be detected is detected to be abnormal, the detection controller triggers the wireless communication module to send an alarm signal to a maintainer in a short message mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211420629.2A CN115480139A (en) | 2022-11-15 | 2022-11-15 | Transformer substation cable insulation state detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211420629.2A CN115480139A (en) | 2022-11-15 | 2022-11-15 | Transformer substation cable insulation state detection device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115480139A true CN115480139A (en) | 2022-12-16 |
Family
ID=84395400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211420629.2A Pending CN115480139A (en) | 2022-11-15 | 2022-11-15 | Transformer substation cable insulation state detection device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115480139A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202153250U (en) * | 2011-07-13 | 2012-02-29 | 天津市电力公司 | Novel fault alarm device for high-voltage power cable |
| CN202886458U (en) * | 2012-11-14 | 2013-04-17 | 山东电力集团公司济南供电公司 | Real-time detection and alarm device for bypass flexible cable running current |
| CN206161717U (en) * | 2016-10-18 | 2017-05-10 | 山东安达尔信息科技有限公司 | Utility tunnel power cable discharge current monitoring devices |
| CN207051420U (en) * | 2017-08-28 | 2018-02-27 | 安徽华明电气设备有限公司 | The high voltage cable malfunction monitoring indicator main frame for being easy to observation |
| CN110361633A (en) * | 2019-08-19 | 2019-10-22 | 广东电网有限责任公司 | A kind of cable line fault indicator and system |
| CN210863916U (en) * | 2019-08-19 | 2020-06-26 | 广东电网有限责任公司 | Cable line fault indicator and system |
-
2022
- 2022-11-15 CN CN202211420629.2A patent/CN115480139A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202153250U (en) * | 2011-07-13 | 2012-02-29 | 天津市电力公司 | Novel fault alarm device for high-voltage power cable |
| CN202886458U (en) * | 2012-11-14 | 2013-04-17 | 山东电力集团公司济南供电公司 | Real-time detection and alarm device for bypass flexible cable running current |
| CN206161717U (en) * | 2016-10-18 | 2017-05-10 | 山东安达尔信息科技有限公司 | Utility tunnel power cable discharge current monitoring devices |
| CN207051420U (en) * | 2017-08-28 | 2018-02-27 | 安徽华明电气设备有限公司 | The high voltage cable malfunction monitoring indicator main frame for being easy to observation |
| CN110361633A (en) * | 2019-08-19 | 2019-10-22 | 广东电网有限责任公司 | A kind of cable line fault indicator and system |
| CN210863916U (en) * | 2019-08-19 | 2020-06-26 | 广东电网有限责任公司 | Cable line fault indicator and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101408581B (en) | Cable wire break detection alarming device | |
| CN111983389A (en) | Device for detecting alignment and fault of multi-core cable | |
| CN109031107A (en) | Detect the electron assistant contact circuit of high-voltage relay contact on-off | |
| CN113359064A (en) | Cable core identification device and method | |
| CN115480139A (en) | Transformer substation cable insulation state detection device and method | |
| CN111856338A (en) | Battery pack power supply line detection device and method | |
| CN103605045A (en) | Power transmission line fault detection device | |
| CN201035699Y (en) | Power cable maintenance safe area online monitoring circuit and the produced alarm device thereof | |
| CN216598475U (en) | Medium-voltage switch cabinet and power distribution system | |
| CN214097740U (en) | N600 secondary circuit ground fault rapid detection circuit | |
| CN212229140U (en) | Battery pack power supply line detection device | |
| CN104852726B (en) | A kind of Intelligent self-diagnosis digital input end daughter board and method | |
| CN203350346U (en) | Potential indicator with temperature measuring function | |
| CN106130477A (en) | A kind of solar energy photovoltaic panel monitoring device | |
| CN211123178U (en) | Voltage sampling pencil wiring detection circuitry and system | |
| CN202957660U (en) | Passive wireless transmission system | |
| CN212275928U (en) | Flat cable conduction testing device and testing circuit thereof | |
| KR20200138867A (en) | Apparatus for monitoring environmental radiation based on sunlight | |
| CN215641563U (en) | Charging gun fault detection device | |
| CN110244175A (en) | A kind of high-voltage detecting circuit and high pressure connect circuit | |
| CN210867746U (en) | Communication line detection device | |
| CN211478575U (en) | Battery pack testing device and equipment | |
| CN102969788A (en) | Passive wireless transmission system | |
| CN202340026U (en) | Power line with automatic short-circuit alarming function | |
| CN219512376U (en) | Voice reporting device for locomotive accumulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221216 |