CN202770538U - Power transmission line T contact automatic temperature measurement and alarm system - Google Patents

Power transmission line T contact automatic temperature measurement and alarm system Download PDF

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Publication number
CN202770538U
CN202770538U CN 201220459538 CN201220459538U CN202770538U CN 202770538 U CN202770538 U CN 202770538U CN 201220459538 CN201220459538 CN 201220459538 CN 201220459538 U CN201220459538 U CN 201220459538U CN 202770538 U CN202770538 U CN 202770538U
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temperature
transmission line
contact
module
electricity
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CN 201220459538
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张渭澎
段超颖
金熙
张士暖
张云龙
鲁修学
李玲玲
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TIANJIN ELECTRIC POWER CORP
State Grid Corp of China SGCC
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TIANJIN ELECTRIC POWER CORP
State Grid Corp of China SGCC
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Abstract

The utility model relates to a power transmission line T contact automatic temperature measurement and alarm system, technically characterized by comprising a temperature acquisition unit and a monitoring center, wherein the temperature acquisition unit is installed upon a transmission line tower to collect the temperature of the T contact of the power transmission line and connected with the monitoring center via a wireless transmission manner for data communication. The power transmission line T contact automatic temperature measurement and alarm system of the utility model adopts a contact type temperature sensor to detect the temperature of the T contact of the high voltage power line, provides an over-temperature alarm function, and is capable of accurately and timely providing the transmission line operation status for electric power department, providing basis for power dispatching, ensuring the safe power transmission, and reducing the happening of the accidents. The power transmission line T contact automatic temperature measurement and alarm system of the utility model features precise measurement, excellent real-time performance, simple structure, convenient installation, stable performance, and the like.

Description

Transmission line of electricity T contact automatic temperature measurement and warning system
Technical field
The utility model belongs to the power transmission and transforming equipment monitoring technical field, especially a kind of transmission line of electricity T contact automatic temperature measurement and warning system.
Background technology
Power transmission line is the chief component of transmission system, is bearing the transfer function of electric power.Because the transmission line of electricity span is large, wide coverage, and for a long time moves under condition complicated and changeable, therefore find early accident potential and in time got rid of, make it be in to move under the good state and just seem very important.In electric current is carried, often can occur because the broken string accident that the line contacts excess Temperature of power transmission line causes, have a strong impact on the reliability of electric power conveying.In order to ensure that the electric power delivery safety carries out, need Real-Time Monitoring power transmission line connector temperature, ensure that it is within the range of permission, and when temperature surpasses the limit value alarm, power supply department takes measures rapidly to safeguard, avoids the generation of power outage, reduces economic loss.
The detection of power transmission line contact temperature is very difficult, mainly contains following factor: high voltage transmission line generally adopts pole line, and contact is away from ground; Transmission line of electricity spreads the circuit of several kilometers even tens kilometers in the open air, and contact distributes and do not concentrate; Contact is in high pressure, the strong magnetic field circumstance.Traditional temperature checking method mainly adopts contactless temperature-measuring methods such as pasting color chips thermometric and infrared measurement of temperature, but, above-mentioned non-contact temperature measuring method can not satisfy the requirement to required measure data precision, and needing the artificial inspection of the scene of a crime to measure, not only cost is high, efficient is low and preventative poor to accident for this.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and measures accurately, cost is low, efficient is high and have transmission line of electricity T contact automatic temperature measurement and the warning system of prophylactic function.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of transmission line of electricity T contact automatic temperature measurement and warning system, comprise temperature collecting cell and Surveillance center, temperature collecting cell is installed on the transmission line shaft tower that temperature to transmission line of electricity T contact gathers and is connected with Surveillance center by wireless transmission method and carries out data communication.
And, described temperature collecting cell comprises power module, temperature measurement module, micro controller module and communication control module, power module is connected respectively to temperature measurement module, micro controller module and communication control module are the modules power supply, micro controller module is connected with temperature measurement module for the temperature that gathers transmission line of electricity T contact, micro controller module links to each other with communication control module, the temperature of the transmission line of electricity T contact of timing acquiring is sent to Surveillance center by communication module, perhaps receive the order of Surveillance center and the temperature of Real-time Collection transmission line of electricity T contact is sent to Surveillance center.
And described micro controller module is connected and composed by single-chip microcomputer and clock chip, clock-reset circuit and watchdog circuit.
And described temperature measurement module adopts digital temperature sensor.
And described communication control module adopts the GPRS wireless transport module.
And; described power module comprises lithium ion battery, solar panels, charge-discharge protection circuit and two voltage-releasing voltage stabilizers; lithium ion battery is by the solar panels power supply and be provided with charge-discharge protection circuit; lithium ion battery links to each other with two voltage-releasing voltage stabilizers respectively and exports the stable DC voltage of 3.3V and 4.2V; the stable DC voltage of this 3.3V is microcontroller and temperature measurement module power supply, and the stable DC voltage of 4.2V is the communication control module power supply.
And the signal that the introducing of described temperature collecting cell employing double layer screen line collects and mode and the transmission line of electricity T contact contact of shielding box internal layer isolation are installed together.
And, described Surveillance center comprises computing machine, warning device and temperature indicating device, computing machine receives the data of temperature collecting cell by wireless communication mode and shows in real time by temperature indicating device, reports to the police by warning device when temperature value surpasses setting value.
Advantage of the present utility model and good effect are:
1, the utility model is by the temperature of temperature collecting cell timing acquiring transmission line of electricity T contact, because the power transmission line contact temperature is the process of rising, the interval certain hour to the data collection once, data have been gathered, temperature collecting cell sends image data, then enter dormant state, dormant state not only can reduce power consumption, and can greatly improve the antijamming capability of equipment.
2, the utility model can be according to the order of Surveillance center, wakes temperature collecting cell under the dormant state up to realize the temperature function of random acquisition transmission line of electricity T contact, so that power transmission line contact temperature situation can in time be understood by Surveillance center.
3, the utlity model has warning function: when temperature surpasses preset value, the time that temperature collecting cell wakes up with shortening by the external clock chip value is set next time, and just data transmission causes Surveillance center's warning device warning to Surveillance center.
4, power module of the present utility model directly adopts the lithium ion battery power supply, can avoid the unstable impact on device stability of electrical network; The circuit of having exempted simultaneously the rectifying and wave-filtering part makes apparatus structure simpler, and the charging of lithium ion battery is finished the more effective natural energy resources that utilized by solar panels.
5, the utility model adopts the temperature sensor of contact to detect and provide overtemperature alarm function to high voltage transmission line T contact temperature, for power department provides the power transmission line operation conditions timely and accurately, for dispatching of power netwoks provides foundation, guaranteed the electric power safety conveying, reduce the accident generation, had the characteristics such as measurement is accurate, real-time, simple in structure, easy for installation, stable performance.
Description of drawings
Fig. 1 is system of the present utility model connection diagram;
Fig. 2 is the circuit block diagram of temperature collecting cell of the present utility model;
Fig. 3 is power module circuitry block diagram of the present utility model;
Fig. 4 is primary control program process flow diagram of the present utility model;
Fig. 5 is dormancy of the present utility model and wakes control flow chart up;
Fig. 6 is thermometric of the present utility model and controlling alarm process flow diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
A kind of transmission line of electricity T contact automatic temperature measurement and warning system as shown in Figure 1, comprise temperature collecting cell and Surveillance center, and temperature collecting cell is connected with Surveillance center by the GPRS wireless transmission method with Surveillance center.Temperature collecting cell is installed in that the temperature to transmission line of electricity T contact gathers on the transmission line shaft tower, this temperature collecting cell comprises power module, temperature measurement module, micro controller module and communication control module, it is the modules power supply that power module is connected respectively to temperature measurement module, micro controller module and communication control module, micro controller module links to each other with communication control module with temperature measurement module respectively as control core, and micro controller module detects the temperature of transmission line of electricity T contact by temperature measurement module; Micro controller module is connected with Surveillance center by communication control module employing GPRS mode and carries out communication, the temperature of timing acquiring transmission line of electricity T contact not only can be sent to Surveillance center, and can receive the order of Surveillance center and the temperature of Real-time Collection transmission line of electricity T contact is sent to Surveillance center.Surveillance center comprises computing machine, warning device and temperature indicating device, computing machine receives the data of temperature collecting cell by the GPRS wireless mode and shows in real time by temperature indicating device, reporting to the police immediately when temperature value surpasses setting value, (setting value can be by user's Self-adjustment, initial setting is 70 ℃, and upper temperature limit is 125 ℃).
As shown in Figure 2, micro controller module adopts 16 single-chip microcomputer MSP430F149 and clock chip, clock-reset circuit and the watchdog circuit with super low-power consumption characteristics, single-chip microcomputer can switch between various mode of operations easily, when increasing the sleep low-power consumption mode, the power consumption during work also drops to minimum.Clock chip for system provides a time reference, wakes microcontroller behind the certain hour of interval as external clock reference, and No. 22 pins that its clock output pin is connected to MSP430F149 are on the TAINCLK pin.Because temperature collecting cell is installed near the hi-line, electromagnetic environment is abominable, when having strong electromagnetic to make program generation deadlock, or strong electromagnetic is when making the blocking of oscillator, inner house dog can be ineffective, can reset controller, so will guarantee reliability under strong magnetic environment, therefore, microprocessor module connects an outer watchdog chip.
Temperature sensor adopts digital temperature sensor DS18B20, and it can realize and being connected of micro controller module easily, and volume is little, and is cheap, easy to install.DS18B20 adopts Single Wire Bus Technology, address, data line and control line is combined into the signal wire of a bidirectional linked list transmission, and its VDD connects external power source, GND ground connection, and the pull-up resistor that DQ meets a 4.7K links to each other with the I/O interface of microcontroller MSP430F149.The DS18B20 probe is drawn directly by data line and is contacted with point for measuring temperature, and the signal cable that leaks outside all adopts the double layer screen line, and its ectomesoderm shielding is the iron head ground connection near tower insulation, and the internal layer shielding is temp measuring system position ground connection.Temperature sensor will record temperature data and import microcontroller into, deposit the data-carrier store of microcontroller in.For shortening Measuring Time, DS18B20 adopts the externally fed mode.
Communication control module adopts wireless transport module MC55, and the MC55 communication pattern is selected the TCP/UDP pattern to link to each other with network and namely is connected on the computing machine of Surveillance center, and sends to a information of supervisor's mobile phone by the SMS short message when temperature beyond limit occurring.
Every sleeving temperature collecting unit can be in real time carries out contact measurement to the temperature of a tie point of transmission line, establishes mutually a point for measuring temperature if three-phase line is every, then at three points for measuring temperature one sleeving temperature collecting unit need be set all.The system works environment also exists high-intensity magnetic field to disturb except the highfield interference is arranged, and therefore, the signal that the introducing of temperature collecting cell employing double layer screen line collects and the method for shielding box internal layer isolation prevent the interference of extra-high voltage high-intensity magnetic field.
As shown in Figure 3; power module comprises lithium ion battery; solar panels; charge-discharge protection circuit and two voltage-releasing voltage stabilizers; the energy of power module comes from lithium ion battery; wherein lithium ion battery is powered by solar panels and is provided with charge-discharge protection circuit; the 12V direct current that lithium ion battery provides links to each other with two voltage-releasing voltage stabilizers of LM2596 and LM22676 respectively; two voltage-releasing voltage stabilizers are exported respectively the stable DC voltage of 3.3V and 4.2V; wherein; 3.3V stable DC voltage be microcontroller MSP430F149 and temperature sensor DS18B20 power supply; 4.2V stable DC voltage be communication control module MC55 power supply; above-mentioned two voltage stabilizer peripheral circuits are simple; working stability can directly be drawn required DC voltage from pin.Lithium ion battery adding charge-discharge protection circuit stops in the time of can working as cell voltage above certain value the charging of battery is charged when voltage is lower than certain value, thereby guarantees the normal operation of lithium ion battery.
The utility model is compared with existing detection system, but the temperature test data timed sending of native system report to the police immediately when temperature surpasses setting value, also can send the current a certain power transmission line contact temperature value of order inquiry by Surveillance center simultaneously.Power supply adopts the lithium ion battery by solar panel charging, not only takes full advantage of sun power but also can avoid the unstable impact on device stability of electrical network, and the circuit of having exempted simultaneously the rectifying and wave-filtering part can make whole apparatus structure simpler.Control chip adopts MSP430F 149, and when increasing the sleep low-power consumption mode, the power consumption during work also drops to minimum.Adopt general packet radio service technology (GPRS) communication mode, temperature measuring data can send to Surveillance center by wireless network, is sent to simultaneously the cellphone subscriber of appointment with the note form, in time reminds the staff, improves the fiduciary level of reporting to the police.This apparatus structure is simple, easy for installation, stable performance.
Temperature acquisition and alert program are installed in the micro controller module of temperature collecting cell.As shown in Figure 4, temperature acquisition and alert program mainly comprise: startup, dormancy, wake the steps such as the collection of microcontroller, system initialization, T contact temperature, analysis temperature data and warning up, its operational process is as follows:
(1) after the current temperature measuring terminals was opened, system was in dormant state, waited for that external clock chip delay time arrives, and wakes microcontroller up;
(2) after microcontroller is waken up, at first micro controller system is carried out initialization, then gather the T contact temperature;
(3) the T contact temperature that collects is judged, see that whether its value surpasses 70 ℃ of setting values, if surpass setting value, system enters dormant state again, waits for waking up next time.If the T contact temperature surpasses 70 ℃, just send alerting signal.
As shown in Figure 5, dormancy and the wake-up routine in temperature acquisition and the alert program mainly comprises: start the microcontroller park mode, start the external clock chip, time-delay is waited for, judge whether delay time arrives, wake the step such as micro controller module up.Its operational process is as follows:
(1) microcontroller enters park mode, starts simultaneously the wait of delaying time of external clock chip;
(2) clock not yet arrives, and continues time-delay and waits for; Delay time wakes micro controller module up after arriving.
As shown in Figure 6, the thermometric in temperature acquisition and the alert program and warning subroutine mainly comprise: system initialization, check WDT, reading temperature data, analysis temperature data, start wireless module, data send, detect the steps such as return signal and warning.Behind system initialization, this program operation process is as follows:
(1) checks WDT, if no signal reading temperature sensor data are then waited for if there is signal then to get back to previous step;
(2) temperature data that reads is analyzed, judged whether if surpass ceiling temperature, then need start wireless transport module above 70 ℃ of the high alarm settings of setting, if nothing starts dormancy and wakes the control subroutine up, enter dormant state;
(3) behind the startup wireless module temperature data is sent to Surveillance center through GPRS network;
(4) look into and see if there is return signal and judge whether data send successfully;
(5) Surveillance center starts warning system after receiving signal.
It is emphasized that; embodiment described in the utility model is illustrative; rather than determinate; therefore the utility model comprises and is not limited to the embodiment described in the embodiment; every by those skilled in the art according to other embodiments that the technical solution of the utility model draws, belong to equally the scope of the utility model protection.

Claims (8)

1. a transmission line of electricity T contact automatic temperature measurement and warning system, it is characterized in that: comprise temperature collecting cell and Surveillance center, temperature collecting cell is installed on the transmission line shaft tower that temperature to transmission line of electricity T contact gathers and is connected with Surveillance center by wireless transmission method and carries out data communication.
2. transmission line of electricity T contact automatic temperature measurement according to claim 1 and warning system, it is characterized in that: described temperature collecting cell comprises power module, temperature measurement module, micro controller module and communication control module, power module is connected respectively to temperature measurement module, micro controller module and communication control module are the modules power supply, micro controller module is connected with temperature measurement module for the temperature that gathers transmission line of electricity T contact, micro controller module links to each other with communication control module, the temperature of the transmission line of electricity T contact of timing acquiring is sent to Surveillance center by communication module, perhaps receive the order of Surveillance center and the temperature of Real-time Collection transmission line of electricity T contact is sent to Surveillance center.
3. transmission line of electricity T contact automatic temperature measurement according to claim 2 and warning system, it is characterized in that: described micro controller module is connected and composed by single-chip microcomputer and clock chip, clock-reset circuit and watchdog circuit.
4. transmission line of electricity T contact automatic temperature measurement according to claim 2 and warning system is characterized in that: described temperature measurement module employing digital temperature sensor.
5. transmission line of electricity T contact automatic temperature measurement according to claim 2 and warning system is characterized in that: described communication control module employing GPRS wireless transport module.
6. according to claim 2 to 5 each described transmission line of electricity T contact automatic temperature measurement and warning systems; it is characterized in that: described power module comprises lithium ion battery, solar panels, charge-discharge protection circuit and two voltage-releasing voltage stabilizers; lithium ion battery is by the solar panels power supply and be provided with charge-discharge protection circuit; lithium ion battery links to each other with two voltage-releasing voltage stabilizers respectively and exports the stable DC voltage of 3.3V and 4.2V; the stable DC voltage of this 3.3V is microcontroller and temperature measurement module power supply, and the stable DC voltage of 4.2V is the communication control module power supply.
7. transmission line of electricity T contact automatic temperature measurement according to claim 1 and warning system is characterized in that: the signal that described temperature collecting cell adopts the double layer screen line to introduce to collect and mode and the transmission line of electricity T contact contact of shielding box internal layer isolation are installed together.
8. transmission line of electricity T contact automatic temperature measurement according to claim 1 and warning system, it is characterized in that: described Surveillance center comprises computing machine, warning device and temperature indicating device, computing machine receives the data of temperature collecting cell by wireless communication mode and shows in real time by temperature indicating device, reports to the police by warning device when temperature value surpasses setting value.
CN 201220459538 2012-09-11 2012-09-11 Power transmission line T contact automatic temperature measurement and alarm system Active CN202770538U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104359576A (en) * 2014-12-01 2015-02-18 漳州市锦成电力设备有限公司 Device for acquiring and monitoring node temperature of high-tension transmission line
CN104458022A (en) * 2014-11-26 2015-03-25 国网冀北电力有限公司廊坊供电公司 Temperature monitoring system for low-voltage alternating-current circuit
CN105811578A (en) * 2016-03-09 2016-07-27 国家电网公司 Power transmission line monitoring platform, power source monitoring algorithm thereof and image early warning algorithm of power transmission line monitoring platform
CN106802193A (en) * 2017-03-20 2017-06-06 国家电网公司 A kind of electrical body temp measuring method based on wireless power of long-term work
CN110095203A (en) * 2019-06-27 2019-08-06 国网江苏省电力有限公司盐城供电分公司 A kind of temperature of cable junction remote supervision system and its method based on NB-IoT

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104458022A (en) * 2014-11-26 2015-03-25 国网冀北电力有限公司廊坊供电公司 Temperature monitoring system for low-voltage alternating-current circuit
CN104359576A (en) * 2014-12-01 2015-02-18 漳州市锦成电力设备有限公司 Device for acquiring and monitoring node temperature of high-tension transmission line
CN105811578A (en) * 2016-03-09 2016-07-27 国家电网公司 Power transmission line monitoring platform, power source monitoring algorithm thereof and image early warning algorithm of power transmission line monitoring platform
CN105811578B (en) * 2016-03-09 2018-08-31 国家电网公司 Transmission line of electricity monitor supervision platform and its Power Supply Monitoring algorithm and image warning algorithm
CN106802193A (en) * 2017-03-20 2017-06-06 国家电网公司 A kind of electrical body temp measuring method based on wireless power of long-term work
CN110095203A (en) * 2019-06-27 2019-08-06 国网江苏省电力有限公司盐城供电分公司 A kind of temperature of cable junction remote supervision system and its method based on NB-IoT

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