CN210243005U

CN210243005U - Real-time remote measurement monitoring alarm system of transformer temperature

Info

Publication number: CN210243005U
Application number: CN201921140259.0U
Authority: CN
Inventors: Ameng Gao; 高阿盟
Original assignee: Shaanxi Zhongcai Printing Co Ltd
Current assignee: Shaanxi Zhongcai Printing Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-03
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a real-time remote measuring, monitoring and alarming system for the temperature of a transformer, which comprises an isolation transformer, a temperature controller, a switch power supply, a PLC and a temperature sensor, and is characterized in that the alternating current output by the isolation transformer is respectively connected with the temperature controller and the switch power supply, and the output end of the switch power supply is connected with the PLC; the output end of the temperature sensor is connected with a temperature controller, and a signal of the temperature controller is output to the PLC; the PLC output pin is connected with an electric bell HA1, an electric bell HA2, an indicator light L1 and an indicator light L2, and the PLC judges whether to start the electric bell and light the corresponding indicator light according to the input signal feedback of the temperature controller; the PLC output terminal pins Y6 and Y7 output warning signal lines and control lines; by adopting the scheme, the oil type transformer is ensured to safely operate in a state that the load dynamically and greatly floats.

Description

Real-time remote measurement monitoring alarm system of transformer temperature

Technical Field

The utility model discloses automatic monitoring technology field especially relates to a method etc. that transformer temperature real-time remote measurement monitoring alarm system and the tertiary temperature monitoring of transformer were reported to the police and are dealt with automatically.

Background

The oil-type transformer radiates heat generated by the coil to a radiator of the transformer by means of circulation of insulating oil in the transformer, and oil spray leakage may be caused by high temperature during high-load operation, so that fire is caused. The printing enterprises gradually form the load dynamic large-amplitude floating, and the large-power transformer is replaced, so that the capacity resource waste is easily caused, and the monthly operation cost is increased. The existing transformer can support enterprise operation, but safety risks are increased due to the fact that load dynamic floating is large.

The utility model patent of patent number CN200820102831.X discloses a multistage formula power transformer temperature display alarm monitoring device, and it comprises temperature sensor, CPU microprocessor, alarm line and power module, samples, judges, exports corresponding alarm information (sound/light/long-range) dry-type transformer coil temperature, and the device is controlled by CPU. This scheme is too simple, only can send alarm information, and the operation accident problem that can't in time automatic handling be about to take place also can't judge the severity of problem according to alarm information.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a real-time remote measurement monitoring alarm system of transformer temperature overcomes current oily formula transformer and needs the witnessed inspections operating temperature, can't guarantee real-time supervision, can not in time deal with the potential safety hazard. The transformer temperature real-time remote monitoring and monitoring alarm system implements three-level temperature monitoring and alarming on the transformer, and sends out automatic handling measures in a grading way, thereby ensuring that the oil type transformer can safely operate in a state of large-amplitude load dynamic floating.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a real-time remote monitoring and alarming system for the temperature of a transformer comprises an isolation transformer, a temperature controller, a switching power supply, a PLC and a temperature sensor, wherein alternating current output by the isolation transformer is respectively connected with the temperature controller and the switching power supply, and the output end of the switching power supply is connected with the PLC; the output end of the temperature sensor is connected with a temperature controller, and a signal of the temperature controller is output to the PLC; the PLC output pin is connected with an electric bell and an indicator light, and the PLC judges whether to start the electric bell and light the corresponding indicator light according to the input signal feedback of the temperature controller; and the PLC output end pins Y6 and Y7 output warning signal lines and control lines, the warning signal lines and the control lines are respectively connected with an alarm and a universal circuit breaker, and the alarm and the universal circuit breaker are used for sending alarm signals to a designated department and making connection and disconnection actions of an output power supply of the isolation transformer according to the control signals.

Furthermore, the temperature controller comprises a one-way temperature controller, a four-way temperature controller and a shielding signal wire for connecting the one-way temperature controller and the four-way temperature controller, wherein the input end of the one-way temperature controller is connected with a temperature sensor, and the output end of the one-way temperature controller is connected with an electric bell HA 2; the four-way temperature controller outputs 4-way signals to the PLC, and the PLC outputs four-way signal processing results to the electric bell HA1, the indicator lamp L1 and the indicator lamp L2.

As the utility model discloses a further optimization, universal circuit breaker is for having the universal circuit breaker of electronic dropout function.

As the utility model discloses a further optimization, temperature sensor is PT100 thermocouple, temperature sensor passes through isolation transformer oiling mouth and sets up in transformer tank.

Adopt the utility model discloses a beneficial effect of production does:

1. the utility model discloses can remote monitoring oil formula transformer operating temperature in real time, send corresponding alarm information according to the temperature grade of difference, be favorable to the staff in time to judge the problem severity, effectively guarantee in time to deal with the potential safety hazard.

2. The power distribution potential safety hazard caused by dynamic large-amplitude floating of the electric load is effectively controlled.

3. Full automatic operation has been realized to this scheme, reduces the power distribution worker intensity of labour, reduces the distribution operation cost. The labor cost is saved year by year.

Drawings

Fig. 1 is a schematic diagram of the circuit structure of the present invention.

FIG. 2 is a schematic diagram of each control module mechanism of the present invention

FIG. 3 is the schematic diagram of the real-time remote monitoring and alarming process of the utility model

In the figure:

101-an isolation transformer; 201-single-channel temperature controller; 301-four-way temperature controller; 401-a switching power supply; 501-PLC; 601-shield signal lines; 701-a temperature sensor; 801-warning signal line; 901-control line

Detailed Description

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. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 and 2, the transformer temperature real-time remote monitoring alarm system of the present invention comprises an isolation transformer 101, a temperature controller, a switching power supply 401, a PLC501 and a temperature sensor 701, wherein ac output from the isolation transformer 101 is connected to the temperature controller and the switching power supply 401, and the output terminal of the switching power supply 401 is connected to the PLC 501; the output end of the temperature sensor 701 is connected with a temperature controller, and a signal of the temperature controller is output to the PLC 501; the output pin of the PLC501 is connected with an electric bell and an indicator light, and the PLC501 judges whether to start the electric bell and light the corresponding indicator light according to the input signal feedback of the temperature controller; the output end pins Y6 and Y7 of the PLC501 output a warning signal line 801 and a control line 901, the warning signal line 801 and the control line 901 are respectively connected with an alarm and a universal circuit breaker which are used for sending alarm signals to designated departments, and the universal circuit breaker conducts connection and disconnection actions of the output power supply of the isolation transformer 101 according to the control signals.

The temperature controller comprises a one-way temperature controller 201, a four-way temperature controller 301 and a shielding signal wire 601 for connecting the one-way temperature controller 201 and the four-way temperature controller 301, wherein the input end of the one-way temperature controller 201 is connected with a temperature sensor 701, and the output end of the one-way temperature controller is connected with an electric bell HA 2; the four-way temperature controller 301 outputs 4-way signals to the PLC501, and the PLC501 outputs four-way signal processing results to the electric bell HA1, the indicator light L1 and the indicator light L2.

The universal circuit breaker is a QW15-1600 type universal circuit breaker with an electric tripping function.

The temperature sensor 701 is a PT100 thermocouple, and the temperature sensor 701 is arranged in a transformer oil tank through an oil filling opening of an isolation transformer 101.

Referring to fig. 3, a method for monitoring and alarming the temperature of a transformer by real-time telemetry, which adopts a system for monitoring and alarming the temperature of the transformer by real-time telemetry, comprises the following steps:

the temperature sensor 701 outputs a real-time temperature signal of the transformer oil to the PLC 501; when the measured value is more than 75 ℃, the PLC501 controls to turn on the indicator light L1 and simultaneously start the electric bell HA1 at a certain frequency and time interval, and when the temperature is lower than 75 ℃, the PLC adopts to turn off the indicator light L1 and the electric bell HA 1; when the measured value is more than 85 ℃, the PLC501 controls to light the indicator lamp L2 while keeping the electric bell HA1 sounding; when the measured value is more than 95 ℃, the PLC501 lights indicator lights L1 and L2 while keeping the electric bell HA1 sounding at high frequency and starts an alarm through a warning signal line 801 connected with a pin Y6; when the measured value is more than 105 ℃, the PLC501 sends a command for cutting off the output power of the isolation transformer 101 to the universal circuit breaker through a control line 901 connected with a pin Y7, and the power is disconnected.

The utility model discloses the theory of operation detects transformer insulating lubricating oil installation temperature for temperature sensor, and the data transmission that will detect gives PLC, and PLC gives the display screen with data real-time transmission to according to data identification, send alarm signal step by step respectively, drive alarm execution unit sends different signals, simultaneously, after triggering third level alarm signal, give universal circuit breaker to signalling simultaneously, cut off low pressure total load switch.

A real-time remote monitoring and alarming system for the temperature of a transformer relates to a device for monitoring, alarming and automatically processing the four-stage temperature of the transformer, and comprises a power module, a temperature display controller, a PLC (programmable logic controller), a temperature sensor, an alarming and processing circuit and the like.

The PT100 thermocouple is used for measuring the transformer insulating oil in real time, the transformer insulating oil is transmitted to an automatic instrument in a maintenance room through a shielded wire, a temperature controller converts the measurement data into a switching value and transmits the switching value to an FX1S-30MR PLC, and the automatic instrument displays the measurement value on a large screen in real time. And the PLC analyzes and compares the measured values, gives an alarm step by step and sends out an execution command.

Referring to fig. 3, as one embodiment of the present invention, two different temperature controllers are used in the on-site and on-duty rooms of the distribution room.

The power module uses an isolation power supply to supply power, and the safety performance of the whole remote measurement instant monitoring alarm system is stronger.

Alarm lamps with different colors and controllable sound alarm frequency

The alarm circuit is controlled by a PLC (programmable logic controller), and the flashing frequency of the alarm lamp and the frequency of the alarm sound can be respectively controlled.

The operating temperature of the transformer can be remotely monitored by workers.

The transformer temperature real-time telemetering monitoring alarm system comprises a step-by-step disposal circuit and a load switch control circuit.

Detect transformer insulating lubricating oil installation temperature, give PLC with the data transmission that detects, PLC gives the display screen with data real-time transmission to according to data identification, send alarm signal step by step respectively, drive alarm execution unit sends different signals, simultaneously, after triggering third level alarm signal, give universal circuit breaker with signal transmission simultaneously, cut off low pressure total load switch.

As one of the embodiments of the utility model, the real-time telemetering monitoring of transformer temperature reports to the police the flow as follows:

1, PT100 thermocouples are used for measuring transformer insulating oil in real time, measurement data are transmitted to a maintenance room FX1S-30MR PLC and an automatic instrument through shielded wires, and the automatic instrument displays the measurement values on a large screen in real time. And the PLC analyzes and compares the measured values, gives an alarm step by step and sends out an execution command.

2 when the measured value is more than 75 ℃, the PLC outputs a pulse new signal, the yellow alarm lamp is on, the alarm buzzer is driven to buzz for 15s every 600s at the same time, when the temperature is lower than 75 ℃, the alarm is stopped, the stop switch is adopted in the middle, and the alarm can be manually closed.

3 when the measured value is more than 85 ℃, the PLC outputs a signal, the red alarm lamp is turned on, the buzzer is driven to sound for a long time, maintenance personnel check and confirm the situation on site, the production department is informed to carry out staggered production after confirmation, the power load is reduced, a stop switch is adopted in the middle, and the alarm can be manually turned off.

4 when the measured value is more than 95 ℃, the PLC outputs a signal, the yellow and red alarm lamps are simultaneously on, the buzzer sounds with a long frequency, meanwhile, a warning signal is sent to a company safety center, the safety center broadcasts warning information in real time, each machine enters a standby state, if the measured value continuously rises to 105 ℃, the PLC sends an execution command to the universal circuit breaker QW15-1600, and the load master switch is cut off through the execution motor.

The foregoing is a more detailed description of the present invention taken in conjunction with the accompanying drawings, which are not intended to limit the invention to the particular embodiments described herein. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to be within the scope of the invention as determined by the claims as filed.

Claims

1. A real-time telemetering, monitoring and alarming system for the temperature of a transformer comprises an isolation transformer (101), a temperature controller, a switching power supply (401), a PLC (501) and a temperature sensor (701), and is characterized in that alternating currents output by the isolation transformer (101) are respectively connected with the temperature controller and the switching power supply (401), and the output end of the switching power supply (401) is connected with the PLC (501); the output end of the temperature sensor (701) is connected with a temperature controller, and a signal of the temperature controller is output to the PLC (501); the output pin of the PLC (501) is connected with an electric bell HA1, an electric bell HA2, an indicator light L1 and an indicator light L2, and the PLC (501) judges whether to start the electric bell and light the corresponding indicator light according to the input signal feedback of the temperature controller; the output end pins Y6 and Y7 of the PLC (501) output a warning signal line (801) and a control line (901), the warning signal line (801) and the control line (901) are respectively connected with an alarm and a universal circuit breaker which are used for sending alarm signals to an appointed department, and the universal circuit breaker conducts connection and disconnection actions of an output power supply of the isolation transformer (101) according to the control signals.

2. The real-time telemetry monitoring alarm system for transformer temperature according to claim 1, wherein: the temperature controller comprises a single-path temperature controller (201), a four-path temperature controller (301) and a shielding signal wire (601) for connecting the single-path temperature controller (201) and the four-path temperature controller (301) with each other, wherein the input end of the single-path temperature controller (201) is connected with a temperature sensor (701), and the output end of the single-path temperature controller is connected with an electric bell HA 2; the four-way temperature controller (301) outputs 4-way signals to the PLC (501), and the PLC (501) outputs four-way signal processing results to the electric bell HA1, the indicator lamp L1 and the indicator lamp L2.

3. The real-time telemetry monitoring alarm system for transformer temperature according to claim 1, wherein: the universal circuit breaker is a type universal circuit breaker with an electric tripping function.

4. The real-time telemetry monitoring alarm system for transformer temperature according to claim 1, wherein: the temperature sensor (701) is a PT100 thermocouple, and the temperature sensor (701) is arranged in a transformer oil tank through an oil filling port of an isolation transformer (101).