CN211452651U - Transformer temperature electric power operation maintenance monitoring devices - Google Patents
Transformer temperature electric power operation maintenance monitoring devices Download PDFInfo
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- CN211452651U CN211452651U CN201920698824.9U CN201920698824U CN211452651U CN 211452651 U CN211452651 U CN 211452651U CN 201920698824 U CN201920698824 U CN 201920698824U CN 211452651 U CN211452651 U CN 211452651U
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Abstract
The utility model discloses a transformer temperature electric power operation maintenance monitoring devices, including a plurality of temperature sensor, temperature sensor sets up on the different positions of transformer, temperature sensor's output is connected with data module through communication link, data module's output passes through cable junction to the transformer 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.
Description
Technical Field
The utility model relates to a power supply field especially relates to a transformer temperature electric power operation maintenance monitoring devices.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction. The transformer belongs to an electric appliance with high energy density. The coil has high current, the current can generate certain heat, and meanwhile, the magnetic field generated by the coil has certain loss in the iron core and generates heat. Resulting in unstable operation of the transformer. When the temperature of the transformer rises, the resistance of the coil increases, further heat increases, the temperature further rises, and a vicious circle is entered. When the external environment temperature is too high or the current load is too large, the temperature of the transformer is too high, the resistance of the transformer is rapidly increased, the transformer is burnt, and a series of problems such as fire, power supply failure and the like are caused.
The traditional monitoring of the transformer temperature 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 consumed manpower and material resources are large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a utility model aim at: to the problems existing in the prior art, the transformer temperature and power operation maintenance monitoring device is provided, the problem of real-time monitoring of the temperature of a transformer is solved, the problem of high monitoring cost of the temperature of a 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 utility model provides a transformer temperature electric power operation maintenance monitoring devices, includes a plurality of temperature sensor, temperature sensor sets up on the different positions of transformer, temperature sensor's output is connected with data module through communication link, data module's output passes through cable junction to the transformer 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.
Further, the utility model discloses a preferred structure of a transformer temperature electric power operation maintenance monitoring device, wherein a plurality of temperature sensors are arranged on the outer surface of the iron core of the transformer, and a plurality of temperature sensors are arranged in the middle of the coil of the transformer; the temperature sensors are arranged in transformer oil of the transformer.
Further, 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 signal is fed back to the control switches corresponding to the transformers through the communication line.
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, the temperature sensor module comprises a plurality of temperature sensors, the temperature sensors are arranged at different positions of the transformer, 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 output end of the temperature sensor is connected with a data module through a communication link, the output end of the data module is connected to control switches corresponding to the transformers through cables, the output end of the data module is connected with a communication module through a cable, 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.
Further, the utility model discloses a preferred structure of a transformer temperature electric power operation maintenance monitoring device, wherein a plurality of temperature sensors are arranged on the outer surface of the iron core of the transformer, and a plurality of temperature sensors are arranged in the middle of the coil of the transformer; the temperature sensors are arranged in transformer oil of the transformer.
The data module comprises a central processing unit and a memory; the central processing unit is connected with the memory through a bus.
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 signal is fed back to the control switches corresponding to the transformers through the communication line.
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, whether the operation parameters of the power cable are normal or not and the operation condition of the load on the lower stage of the power cable are inspected.
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 transformer temperature electric power operation maintenance monitoring devices which characterized in that: the intelligent transformer temperature control system is characterized by comprising a plurality of temperature sensors, wherein the temperature sensors are arranged at different positions of a transformer, 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 transformer 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 transformer temperature electric operation maintenance monitoring device of claim 1, wherein: the temperature sensors are arranged on the outer surface of the iron core of the transformer, and the temperature sensors are arranged in the middle of the coil of the transformer; the temperature sensors are arranged in transformer oil of the transformer.
3. The transformer temperature electric operation maintenance monitoring device of claim 2, wherein: 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 transformer temperature electric operation maintenance monitoring 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 signal is fed back to the control switches corresponding to the transformers through the communication line.
5. The transformer temperature electric operation maintenance monitoring device of claim 4, wherein: 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 transformer temperature electric operation maintenance monitoring device of 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 transformer temperature electric operation maintenance monitoring device according to any one of claims 1-6, characterized by: the temperature sensor is an analog sensor or a digital sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920698824.9U CN211452651U (en) | 2019-05-16 | 2019-05-16 | Transformer temperature electric power operation maintenance monitoring devices |
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| CN201920698824.9U CN211452651U (en) | 2019-05-16 | 2019-05-16 | Transformer temperature electric power operation maintenance monitoring devices |
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| CN211452651U true CN211452651U (en) | 2020-09-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116295661A (en) * | 2023-05-22 | 2023-06-23 | 济南西电特种变压器有限公司 | Transformer fault early warning system based on Internet of things |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116295661A (en) * | 2023-05-22 | 2023-06-23 | 济南西电特种变压器有限公司 | Transformer fault early warning system based on Internet of things |
| CN116295661B (en) * | 2023-05-22 | 2023-08-01 | 济南西电特种变压器有限公司 | Transformer fault early warning system based on Internet of things |
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