CN209841206U - Cable head fault diagnosis device - Google Patents
Cable head fault diagnosis device Download PDFInfo
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- CN209841206U CN209841206U CN201920687938.3U CN201920687938U CN209841206U CN 209841206 U CN209841206 U CN 209841206U CN 201920687938 U CN201920687938 U CN 201920687938U CN 209841206 U CN209841206 U CN 209841206U
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- partial discharge
- discharge
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Abstract
The utility model provides a cable head fault diagnosis device, which relates to the technical field of power distribution network equipment and comprises a monitoring terminal, and a temperature measuring sensor and a discharge monitoring sensor which are connected with the monitoring terminal; the temperature sensor is used for acquiring the temperature value of the cable head; the discharge monitoring sensor is used for measuring the release amount in the ring main unit; and the monitoring terminal is used for sending out an alarm signal and a trip signal according to the temperature value and the release amount. The utility model discloses can real-time supervision cable head trouble and looped netowrk cabinet internal partial discharge change, in time amputate trouble return circuit has improved equipment safety, has reduced the accident incidence, has practiced thrift cost of maintenance.
Description
Technical Field
The utility model belongs to the technical field of distribution network equipment technique and specifically relates to a cable head fault diagnosis device is related to.
Background
The fault of the cable head is a difficult problem which puzzles the use of the ring main unit, the cable head is basically manufactured and installed on site, the defect exists possibly, but the defect is difficult to find due to the lack of detection equipment on site, in addition, the equipment is inevitably influenced by various factors such as electricity, heat, machinery, environment and the like during operation, the insulating medium of the equipment is continuously deteriorated, the operation state is reduced, even various faults occur, local or even large-area power failure is caused, and huge direct or indirect economic loss is caused.
The failure is caused by many reasons, such as bolt crimping virtual connection, ionization corrosion generated by a long-time strong electric field, insulation abrasion caused by mechanical high-frequency vibration, dielectric aging decomposition caused by a thermal effect, insulation moisture and the like. With the increase of the operation time, the deterioration of an insulating medium and the performance reduction of the insulating medium cause that the process of insulation breakdown has a certain time, so that the fault of the cable head can be found as soon as possible, the operation of alarming and cutting off has practical and effective significance, but the fault of the cable head cannot be judged due to the lack of corresponding monitoring data in the current product.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a cable head fault diagnosis device can real-time supervision cable head trouble and looped netowrk cabinet internal office discharge change, in time amputates the trouble return circuit, has improved equipment safety, has reduced the accident rate, has practiced thrift cost of maintenance.
In a first aspect, an embodiment of the present invention provides a cable head fault diagnosis device, where the device includes a monitoring terminal, and a temperature measurement sensor and a discharge monitoring sensor connected to the monitoring terminal;
the temperature sensor is used for acquiring a temperature value of the cable head;
the discharge monitoring sensor is used for measuring the release amount in the ring main unit;
and the monitoring terminal is used for sending out an alarm signal and a trip signal according to the temperature value and the release amount.
In combination with the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the temperature measuring sensor is installed in an insulating plug of a cable head in a ring main unit, the discharging monitoring sensor is installed in a cable chamber of the ring main unit, and the monitoring terminal is installed in an instrument chamber of the ring main unit.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the monitoring terminal includes a partial discharge host and a temperature host; the partial discharge host is connected with the discharge monitoring sensor, and the temperature host is connected with the temperature measuring sensor;
the partial discharge host is used for comparing the partial discharge with a preset partial discharge threshold value and sending an alarm signal and a trip signal under the condition that the partial discharge is greater than the preset partial discharge threshold value according to the comparison result;
and the temperature host is used for comparing the temperature value with a set temperature threshold value and sending an alarm signal and a trip signal under the condition that the comparison result is that the temperature value is greater than the preset temperature threshold value.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein a common unit switch is installed in an instrument room of the ring main unit; the public unit switch is connected with the monitoring terminal through an RS485 line;
the public unit switch is used for carrying out data transmission with the monitoring terminal; wherein the data comprises at least one of: the temperature value, the release amount, the alarm signal and the trip signal.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein an partial discharge collector is installed in a cable chamber of the ring main unit, and the partial discharge collector is connected between the partial discharge host and the discharge monitoring sensor;
the partial discharge collector is used for collecting the partial discharge quantity measured by each discharge monitoring sensor.
In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the temperature measuring sensor includes a wireless temperature measuring sensor, and a wireless module in the wireless temperature measuring sensor communicates with the temperature host.
In combination with the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein each of the temperature measuring sensors is provided with a corresponding first code, and each of the discharge monitoring sensors is provided with a corresponding second code.
With reference to the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the apparatus further includes a preset master station connected to the monitoring terminal;
and the preset master station is used for sending out a fault alarm according to the alarm signal and executing a fault removal action according to the trip signal.
With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the preset master station includes a 4G module and an ONU device;
the 4G module is used for carrying out data transmission with the public unit switch according to a 4G wireless network;
and the ONU equipment is used for carrying out data transmission with the public unit switch according to the optical fiber cable.
The embodiment of the utility model provides a following beneficial effect has been brought:
the utility model provides a cable head fault diagnosis device, which comprises a monitoring terminal, a temperature measuring sensor and a discharge monitoring sensor, wherein the temperature measuring sensor and the discharge monitoring sensor are connected with the monitoring terminal; the temperature sensor is used for acquiring the temperature value of the cable head; the discharge monitoring sensor is used for measuring the release amount in the ring main unit; and the monitoring terminal is used for sending out an alarm signal and a trip signal according to the temperature value and the release amount. The utility model discloses can real-time supervision cable head trouble and looped netowrk cabinet internal partial discharge change, in time amputate trouble return circuit has improved equipment safety, has reduced the accident incidence, has practiced thrift cost of maintenance.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a cable head fault diagnosis device provided in an embodiment of the present invention;
fig. 2 is a schematic view illustrating an installation of a cable head temperature measuring sensor provided in an embodiment of the present invention;
fig. 3 is a schematic view of a ring main unit according to an embodiment of the present invention;
fig. 4 is a schematic view of a monitoring terminal provided in an embodiment of the present invention;
fig. 5 is a schematic view of an internal installation structure of an instrument room and a cable room provided by an embodiment of the present invention.
Icon:
100-a monitoring terminal; 200-temperature measuring sensor; 300-discharge monitoring sensor.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are 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.
At present, the fault of a cable head is a difficult problem which puzzles the use of a ring main unit, the cable head is basically manufactured and installed on site, the defect exists possibly, but the defect is difficult to find due to the lack of detection equipment on site, in addition, the equipment is inevitably influenced by various factors such as electricity, heat, machinery, environment and the like during operation, the insulating medium of the equipment is continuously degraded, the operation state is reduced, even various faults occur, local and even large-area power failure is caused, and huge direct or indirect economic loss is caused.
The failure is caused by many reasons, such as bolt crimping virtual connection, ionization corrosion generated by a long-time strong electric field, insulation abrasion caused by mechanical high-frequency vibration, dielectric aging decomposition caused by a thermal effect, insulation moisture and the like. With the increase of the operation time, the deterioration of an insulating medium and the performance reduction of the insulating medium cause that the process of insulation breakdown has a certain time, so that the fault of the cable head can be found as soon as possible, the operation of alarming and cutting off has practical and effective significance, but the fault of the cable head cannot be judged due to the lack of corresponding monitoring data in the current product.
Based on this, the embodiment of the utility model provides a cable head fault diagnosis device can real-time supervision cable head trouble and looped netowrk cabinet internal office discharge change, in time amputates the trouble return circuit, has improved equipment safety, has reduced the accident rate, has practiced thrift cost of maintenance.
For the convenience of understanding the present embodiment, a cable head fault diagnosis device disclosed in the embodiments of the present invention will be described in detail first.
Example (b):
fig. 1 is a cable head fault diagnosis device provided by the embodiment of the utility model.
Referring to fig. 1, the cable head fault diagnosis device mainly includes a monitoring terminal 100, and a temperature measuring sensor 200 and a discharge monitoring sensor 300 connected to the monitoring terminal 100.
Further, referring to fig. 2 and 3, the temperature measuring sensor 200 is installed in an insulation plug of a cable head in the ring main unit, the discharge monitoring sensor 300 is installed in a cable chamber of the ring main unit, and the monitoring terminal 100 is installed in an instrument chamber of the ring main unit.
Specifically, the ring main unit includes a cable chamber and an instrument chamber, and the number of the ring main units is a plurality of, except for the first ring main unit, each ring main unit is to be installed with a cable head, a discharge monitoring sensor 300 and a monitoring terminal 100, wherein the cable head is connected with the cable chamber.
And the temperature measuring sensor 200 is used for acquiring the temperature value of the cable head.
Further, each temperature sensor 200 is provided with a corresponding unique first code.
The discharge monitoring sensor 300 is used for measuring the release amount in the ring main unit;
further, each discharge monitoring sensor 300 is provided with a corresponding unique second code.
And the monitoring terminal 100 is used for sending out an alarm signal and a trip signal according to the temperature value and the release amount.
Further, referring to fig. 4, the monitoring terminal 100 includes a partial discharge host and a temperature host; the partial discharge host is connected with the discharge monitoring sensor 300, and the temperature host is connected with the temperature measuring sensor 200; the partial discharge host is used for comparing the partial discharge with a preset partial discharge threshold value and sending an alarm signal and a trip signal under the condition that the partial discharge is greater than the preset partial discharge threshold value according to the comparison result; and the temperature host is used for comparing the temperature value with a set temperature threshold value and sending an alarm signal and a trip signal under the condition that the comparison result is that the temperature value is greater than the preset temperature threshold value.
The temperature sensor 200 comprises a wireless temperature sensor, and a wireless module in the wireless temperature sensor is communicated with the temperature host.
Further, an partial discharge collector is installed in a cable chamber of the ring main unit, and the partial discharge collector is connected between the partial discharge host and the discharge monitoring sensor 300; and the partial discharge collector is used for collecting the partial discharge quantity measured by each discharge monitoring sensor.
Specifically, the wireless temperature measuring sensor collects the temperature value of the cable head in real time and transmits the temperature value to the temperature host, the temperature host compares the received real-time temperature value with a preset reference threshold, and when the temperature value is greater than the reference temperature threshold, the temperature host sends an alarm signal and a trip signal; similarly, the discharge monitoring sensor 300 measures the partial discharge amount in the ring main unit in real time, the partial discharge collector collects the partial discharge amount and sends the partial discharge amount to the partial discharge host, the partial discharge host compares the received real-time partial discharge amount with a preset reference partial discharge threshold, and when the partial discharge amount is greater than the reference partial discharge threshold, the partial discharge host sends an alarm signal and a trip signal.
Each temperature sensor 200 corresponds to a unique first code, that is, the code values of different temperature sensors 200 are different; similarly, each discharge monitoring sensor 300 also has a unique second code, i.e., the code values of different discharge monitoring sensors 300 are different. The coded value can represent the position of the sensor to which the coded value belongs, so that the partial discharge host and the temperature host determine the fault occurrence position according to the coded value and send out position information.
Further, referring to fig. 5, a common unit switch is installed in the instrument room of the ring main unit; wherein, the public unit switch is connected with the monitoring terminal 100 through an RS485 line; a public unit switch for performing data transmission with the monitoring terminal 100; wherein the data may include at least one of: temperature value, release amount, alarm signal and trip signal.
Further, the device also comprises a preset master station connected with the monitoring terminal 100; and the preset master station is used for sending out a fault alarm according to the alarm signal and executing a fault removal action according to the trip signal.
The preset master station comprises a 4G module and ONU (Optical Network Unit) equipment; the 4G module is used for carrying out data transmission with the public unit switch according to a 4G wireless network; and the ONU equipment is used for carrying out data transmission with the public unit switch according to the optical fiber cable.
Specifically, the public unit switch is installed in the instrument room of the first ring main unit, the partial discharge collector is installed in the cable room of the first ring main unit, the public unit switch is connected with each partial discharge host of the monitoring terminal 100 and the temperature host, the temperature value, the partial discharge quantity, the alarm signal, the trip signal and the position information are received and sent to the preset main station, and the preset main station sends out a fault alarm when receiving the alarm signal and the trip signal and simultaneously cuts off the power supply of a fault line. The preset master station can perform data transmission with the public unit switch in a wired or wireless manner.
The embodiment of the utility model provides a following beneficial effect has been brought:
the utility model provides a cable head fault diagnosis device, which comprises a monitoring terminal, a temperature measuring sensor and a discharge monitoring sensor, wherein the temperature measuring sensor and the discharge monitoring sensor are connected with the monitoring terminal; the temperature sensor is used for acquiring the temperature value of the cable head; the discharge monitoring sensor is used for measuring the release amount in the ring main unit; and the monitoring terminal is used for sending out an alarm signal and a trip signal according to the temperature value and the release amount. The utility model discloses can real-time supervision cable head trouble and looped netowrk cabinet internal partial discharge change, in time amputate trouble return circuit has improved equipment safety, has reduced the accident incidence, has practiced thrift cost of maintenance.
In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, 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 in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatus and system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A cable head fault diagnosis device is characterized by comprising a monitoring terminal, a temperature measurement sensor and a discharge monitoring sensor, wherein the temperature measurement sensor and the discharge monitoring sensor are connected with the monitoring terminal;
the temperature sensor is used for acquiring a temperature value of the cable head;
the discharge monitoring sensor is used for measuring the release amount in the ring main unit;
and the monitoring terminal is used for sending out an alarm signal and a trip signal according to the temperature value and the release amount.
2. The cable head fault diagnosis device according to claim 1, wherein the temperature sensor is installed in an insulation plug of a cable head in a ring main unit, the discharge monitoring sensor is installed in a cable chamber of the ring main unit, and the monitoring terminal is installed in an instrument chamber of the ring main unit.
3. The cable head fault diagnosis device according to claim 1, wherein the monitoring terminal includes a partial discharge host and a temperature host; the partial discharge host is connected with the discharge monitoring sensor, and the temperature host is connected with the temperature measuring sensor;
the partial discharge host is used for comparing the partial discharge with a preset partial discharge threshold value and sending an alarm signal and a trip signal under the condition that the partial discharge is greater than the preset partial discharge threshold value according to the comparison result;
and the temperature host is used for comparing the temperature value with a set temperature threshold value and sending an alarm signal and a trip signal under the condition that the comparison result is that the temperature value is greater than the preset temperature threshold value.
4. The cable head fault diagnosis device according to claim 1, wherein a common unit switch is installed in an instrument room of the ring main unit; the public unit switch is connected with the monitoring terminal through an RS485 line;
the public unit switch is used for carrying out data transmission with the monitoring terminal; wherein the data comprises at least one of: the temperature value, the release amount, the alarm signal and the trip signal.
5. The cable head fault diagnosis device according to claim 3, wherein a partial discharge collector is installed in a cable chamber of the ring main unit, and the partial discharge collector is connected between the partial discharge host and the discharge monitoring sensor;
the partial discharge collector is used for collecting the partial discharge quantity measured by each discharge monitoring sensor.
6. The cable head fault diagnosis device according to claim 5, wherein the temperature sensor comprises a wireless temperature sensor, and a wireless module in the wireless temperature sensor is in communication with the temperature host.
7. The cable head fault diagnosis device according to claim 1, wherein each temperature measurement sensor is provided with a corresponding first code, and each discharge monitoring sensor is provided with a corresponding second code.
8. The cable head fault diagnosis device according to claim 4, further comprising a preset master station connected to the monitoring terminal;
and the preset master station is used for sending out a fault alarm according to the alarm signal and executing a fault removal action according to the trip signal.
9. The cable head fault diagnosis device according to claim 8, wherein the preset master station includes a 4G module and an ONU device;
the 4G module is used for carrying out data transmission with the public unit switch according to a 4G wireless network;
and the ONU equipment is used for carrying out data transmission with the public unit switch according to the optical fiber cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920687938.3U CN209841206U (en) | 2019-05-14 | 2019-05-14 | Cable head fault diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920687938.3U CN209841206U (en) | 2019-05-14 | 2019-05-14 | Cable head fault diagnosis device |
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| Publication Number | Publication Date |
|---|---|
| CN209841206U true CN209841206U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920687938.3U Active CN209841206U (en) | 2019-05-14 | 2019-05-14 | Cable head fault diagnosis device |
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|---|---|
| CN (1) | CN209841206U (en) |
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2019
- 2019-05-14 CN CN201920687938.3U patent/CN209841206U/en active Active
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