CN211452652U - 10KV middling pressure power cable temperature electric power operation maintenance detection device - Google Patents
10KV middling pressure power cable temperature electric power operation maintenance detection device Download PDFInfo
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- CN211452652U CN211452652U CN201920698833.8U CN201920698833U CN211452652U CN 211452652 U CN211452652 U CN 211452652U CN 201920698833 U CN201920698833 U CN 201920698833U CN 211452652 U CN211452652 U CN 211452652U
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Abstract
The utility model discloses a 10KV middling pressure power cable temperature electric power operation maintenance detection device, including a plurality of temperature sensor, temperature sensor sets up on 10KV middling pressure power cable's different positions, temperature sensor's output is connected with data module through communication link, data module's output passes through cable junction to 10KV middling pressure power cable on the control switch that corresponds more, data module's output has communication module through cable junction, communication module signal connection has local control center, communication module signal connection has fortune dimension platform. The problem of power cable temperature monitoring with high costs is solved, the problem of power supply system regulation and control cycle length that the power cable temperature arouses has been solved.
Description
Technical Field
The utility model relates to a power supply field especially relates to a 10KV middling pressure power cable temperature electric power operation maintenance detection device.
Background
During use, the power cable generates a certain amount of heat, which causes the temperature of the cable to rise. When the external environment temperature is too high or the current load is too large, the temperature of the power cable is too high, the resistance of the power cable is rapidly increased, and a series of problems such as fire, power supply failure and the like are caused.
The traditional power cable temperature monitoring mainly adopts off-line monitoring, including a temperature indicating wax plate method, a lead joint temperature measuring method, a contact telecommunication temperature measuring method, an infrared temperature measuring method and the like, however, in the mode, a tester carries an instrument to carry out on-site detection after power failure, the real-time performance is poor, and the consumed manpower and material resources are large.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: aiming at the existing problems, the device for operating, maintaining and detecting the temperature of the 10KV medium-voltage power cable is provided, the problem of real-time monitoring of the temperature of the 10KV medium-voltage power cable is solved, the problem of high monitoring cost of the temperature of the power cable is solved, and the problem of long regulation and control period of a power supply system caused by the temperature of the power cable is solved.
The utility model adopts the technical scheme as follows:
the temperature and power operation maintenance detection device for the 10KV medium-voltage power cable comprises a plurality of temperature sensors, wherein the temperature sensors are arranged at different positions of the 10KV medium-voltage power cable, the output end of each temperature sensor is connected with a data module through a communication link, the output end of each data module is connected to control switches corresponding to the 10KV medium-voltage power cable through cables, the output end of each data module is connected with a communication module through a cable, the communication modules are in signal connection with a local control center, and the communication modules are in signal connection with an operation and maintenance platform.
A Faraday shielding device is arranged outside the temperature sensor; the Faraday shielding device comprises a shielding shell made of metal, the sensor is arranged in the shielding shell and is connected with a data module, and the data module is connected with a communication module; the sensor, the data module and the communication module are all arranged in the shielding shell; the communication module is a wireless communication device.
The communication link is a wireless communication device. And the communication module is connected with the operation and maintenance platform through a network line. Through setting up shield assembly, can prevent that higher voltage from damaging and disturbing the sensor, carry out data transmission and network deployment through setting up wireless network simultaneously, improve monitoring network's reliability and security greatly.
Further, the utility model discloses an optimal structure of a 10KV medium voltage power cable temperature electric power operation maintenance detection device, wherein the data module comprises a central processing unit and a memory; the central processing unit is connected with the memory through a bus.
Furthermore, a self-diagnosis module and a pre-judgment module are arranged in a memory preset in the memory, a protection set value is preset in the self-diagnosis module, and a central processing unit in the data module compares the received data with the protection set value and outputs a control signal according to the comparison result; the control signals are fed back to corresponding control switches of the 10KV medium-voltage power cables through communication lines.
Furthermore, a pre-judgment set value is preset in the pre-judgment module, a plurality of maintenance schemes are stored in the pre-judgment module, the central processing unit in the data module compares the received data with the pre-judgment set value, and triggers different maintenance schemes according to the comparison result, and the central processing unit outputs the triggered maintenance schemes through signals.
Furthermore, the operation and maintenance platform is provided with judgment parameters, signals transmitted by the operation and maintenance platform communication module are compared with the judgment parameters, corresponding early warning is given, early warning signals are transmitted to workers, and the workers perform field inspection and maintenance.
Further, the temperature sensor is an analog sensor or a digital sensor.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the data acquisition is convenient: the monitoring device transmits data to a data module for data acquisition in a wireless communication mode by means of a temperature sensor arranged at a cable connection part;
1. monitoring multiple cables simultaneously: by utilizing the multichannel characteristic of the data module, a plurality of power cables of the power system can be sampled and monitored at the same time, so that the installation space is saved;
2. the energy consumption is low: compared with the traditional multi-channel module, the monitoring device has the advantages that the energy consumption is lower and the service life is longer due to the integrated multi-channel characteristic of the monitoring device when the data of the power cables with the same number are received and sent;
3. the expandability is strong: for the condition that the power cables are more, an extended data module without a CPU can be additionally arranged, all data modules share one CPU, and the extensibility is strong.
Drawings
Fig. 1 is a schematic diagram of the temperature data acquisition structure of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a block diagram of the structure of the flow of temperature data according to the present invention;
fig. 4 is a schematic flow chart of the temperature data determination of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, a plurality of temperature sensors are arranged on the power cable, the temperature sensors are digital sensors, the temperature sensors are transmitted to the temperature module through wired communication or wireless communication, the temperature module transmits temperature signals to the detection device, and the detection device is a data module. The data module comprises a central processing unit and a memory; the central processing unit is connected with the memory through a bus.
A Faraday shielding device is arranged outside the temperature sensor; the Faraday shielding device comprises a shielding shell made of metal, the sensor is arranged in the shielding shell and is connected with a data module, and the data module is connected with a communication module; the sensor, the data module and the communication module are all arranged in the shielding shell; the communication module is a wireless communication device. Through setting up shield assembly, can prevent that higher voltage from damaging and disturbing the sensor, carry out data transmission and network deployment through setting up wireless network simultaneously, improve monitoring network's reliability and security greatly.
A self-diagnosis module and a pre-judgment module are arranged in a memory preset in the memory, a protection set value is preset in the self-diagnosis module, a central processing unit in the data module compares the received data with the protection set value, and a control signal is output according to a comparison result; the control signals are fed back to corresponding control switches of the 10KV medium-voltage power cables through communication lines.
When the analog temperature sensor is adopted, the temperature sensor is connected to the temperature module through a wired communication line, a conditioning circuit for preprocessing a temperature sensor signal is arranged in the temperature module, the input end of the conditioning circuit is connected with the temperature sensor, the output end of the conditioning circuit is connected with an A/D conversion circuit, and the A/D conversion circuit converts an analog signal into a digital signal and transmits the digital signal to the data module.
Therefore, the real-time temperature acquisition is realized, the temperature of the cable can be monitored in real time, and the safe work of the power cable is ensured.
The data transmission process is as shown in fig. 3, the temperature sensor transmits the acquired temperature data to the memory in the data module through the data acquisition channel, and the memory performs data interaction with the processor. And the CPU runs the preset programs in the self-diagnosis module and the pre-judgment module and sends the results out through the communication device.
The operation process of the self-diagnosis module and the pre-judgment module is as shown in fig. 4, the temperature data value t measured by the temperature sensor is transmitted to the memory in the data module, and the memory transmits the data to the CPU. The temperature protection value Tsp on the power cable is preset in the self-diagnosis module, the CPU compares the temperature data value t with the temperature protection value Tsp, and when the temperature data value t is less than or equal to the temperature protection value Tsp, the data module does not respond and continues the next cycle. When the temperature data value t is greater than the temperature protection value Tsp, the data module sends an alarm signal through a cable or controls an electric control switch connected with a power cable to trip, so that the safety of the power supply circuit is protected.
Meanwhile, the data module sends the processed result to a local control center through the communication module and sends the processed result to the operation and maintenance platform through a network access. And the temperature protection value Tsp is determined according to the factory maximum working temperature value, so that the cable is not dangerous.
The pre-judging module is preset with a pre-judging set value Typ on the power cable, the CPU compares the temperature data value t with the pre-judging set value Typ, and when the temperature data value t is less than or equal to the pre-judging set value Typ, the data module does not respond and continues the next cycle. When the temperature data value t is greater than the predetermined set value Typ, the data module triggers a maintenance scheme to protect the safety of the power supply circuit.
Meanwhile, the data module sends the processed result to a local control center through the communication module and sends the processed result to the operation and maintenance platform through a network access.
The pre-determined set value Typ is a specific parameter of the monitoring device, and is a recommended value obtained by considering the aspects of power cable delivery characteristic curve, running record in the past year, preventive test report, environment temperature and the like.
And adjusting according to the working current and the environmental temperature value of the cable by taking the safe temperature value of the cable produced and delivered as a standard. And fine adjustment is carried out according to the service life and the service environment of the cable, when the working environment is higher, the pre-judgment set value Typ is properly reduced, and when the heavy load time is too long, the pre-judgment set value Typ is properly reduced. In this way, the operational safety of the cable is ensured.
The maintenance scheme comprises the following steps:
the first-level maintenance scheme comprises the following steps: for on-line inspection, checking whether each operation parameter of power cable is normal and operation condition of load carried at its subordinate stage
And (3) secondary maintenance scheme: for the power failure inspection, the load carried by the power cable is mainly inspected and measured to confirm the fault reason.
A three-level maintenance scheme: for the power failure inspection, annual inspection and preventive tests including characteristic tests are performed on the entire power cable.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a 10KV middling pressure power cable temperature electric power operation maintenance detection device which characterized in that: the intelligent control system comprises a plurality of temperature sensors, wherein the temperature sensors are arranged at different positions of a 10KV medium-voltage power cable, the output ends of the temperature sensors are connected with a data module through communication links, the output ends of the data module are connected to control switches corresponding to the 10KV medium-voltage power cable through cables, the output ends of the data module are connected with a communication module through cables, the communication module is in signal connection with a local control center, and the communication module is in signal connection with an operation and maintenance platform.
2. The device for detecting the operation, maintenance and power of 10KV medium-voltage power cable according to claim 1, characterized in that: a Faraday shielding device is arranged outside the temperature sensor; the Faraday shielding device comprises a shielding shell made of metal, the sensor is arranged in the shielding shell and is connected with a data module, and the data module is connected with a communication module; the sensor, the data module and the communication module are all arranged in the shielding shell; the communication module is a wireless communication device.
3. The device for detecting the operation, maintenance and power of 10KV medium-voltage power cable according to claim 1, characterized in that: the data module comprises a central processing unit and a memory; the central processing unit is connected with the memory through a bus.
4. A 10KV medium voltage power cable temperature electric power operation maintenance detecting device according to claim 3, characterized in that: a self-diagnosis module and a pre-judgment module are arranged in a memory preset in the memory, a protection set value is preset in the self-diagnosis module, a central processing unit in the data module compares the received data with the protection set value, and a control signal is output according to a comparison result; the control signals are fed back to corresponding control switches of the 10KV medium-voltage power cables through communication lines.
5. The device for detecting the operation, maintenance and power of 10KV medium voltage power cable according to claim 4, characterized in that: the pre-judging module is preset with a pre-judging set value, the pre-judging module is stored with a plurality of maintenance schemes, the central processing unit in the data module compares the received data with the pre-judging set value and triggers different maintenance schemes according to the comparison result, and the central processing unit outputs the triggered maintenance schemes through signals.
6. The device for detecting the operation, maintenance and power of 10KV medium voltage power cable according to claim 5, wherein: and judging parameters are arranged in the operation and maintenance platform, signals transmitted by the operation and maintenance platform communication module are compared with the judging parameters, corresponding early warning is given, early warning signals are transmitted to workers, and the workers perform field inspection and maintenance.
7. A 10KV medium voltage power cable temperature electric power operation maintenance detecting device according to any one of claims 1 to 6, characterized in that: the temperature sensor is an analog sensor or a digital sensor.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124700A (en) * | 2021-04-27 | 2021-07-16 | 中国电建集团江西装备有限公司 | Fused salt energy storage and heat exchange device and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124700A (en) * | 2021-04-27 | 2021-07-16 | 中国电建集团江西装备有限公司 | Fused salt energy storage and heat exchange device and operation method thereof |
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