CN104166359A - Adsorption type transformer oil temperature monitoring alarm device and use method - Google Patents
Adsorption type transformer oil temperature monitoring alarm device and use method Download PDFInfo
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- CN104166359A CN104166359A CN201410417505.8A CN201410417505A CN104166359A CN 104166359 A CN104166359 A CN 104166359A CN 201410417505 A CN201410417505 A CN 201410417505A CN 104166359 A CN104166359 A CN 104166359A
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Abstract
The invention provides an adsorption type transformer oil temperature monitoring alarm device and a use method. The adsorption type transformer oil temperature monitoring alarm device comprises a base, a power module, a temperature sensor, a temperature controller, an actuator and a displayer, the power module, the temperature sensor, the temperature controller, the actuator and the displayer are arranged based on the base, the power module is respectively connected with the temperature controller, the actuator and the displayer, and the temperature controller is respectively connected with the temperature sensor, the displayer and the actuator. The temperature sensor comprises a temperature sensing module and can be embedded into the bottom face of the base. The base is a magnetic material part and is adsorbed on the outer surface of a transformer shell. The temperature controller comprises a single-chip microcomputer, an analog-digital conversion chip, a man-machine interface and a data output port, and the analog-digital conversion chip, the man-machine interface and the data output port are respectively connected with the single-chip microcomputer. The device can be applied to various types of transformers, alarm/shutdown temperature can be set according to the running environment, the temperature classification, the oil temperature errors and the transformer by the device itself, the device is simple in structure, low in manufacturing cost and long in service life, temperature is displayed visually and accurately, and the device can be mounted at any time and any where and is the new technology easy to apply and popularize.
Description
Technical field
The present invention relates to temperature of oil in transformer monitoring alarm technical field, relate in particular to a kind of absorption type temperature of oil in transformer monitoring alarm device and using method.
Background technology
In city and rural area, substation transformer is the important electric power facility being seen everywhere, and its consumption is large, distribution is wide, but lack for a long time, it is carried out to the effectively measure of supervision.The key of transformer safe operation is that its working temperature is unsuitable too high, otherwise can make apparatus insulated damage, accelerated deterioration, the lost of life, even burns, and leads to the major accidents such as fire and blast.Network distribution transformer running temperature is carried out to a difficult point of monitoring is, transformer is of a great variety, has oil-immersed type transformer, noncrystal transformer, dry-type transformer, box type transformer etc., and mounting means can be ground or underground.In the face of complicated running environment, Measurement accuracy transformer temperature, remind in time and safeguard that regulation and control are most important.
At present, the temperature controller that transformer extensively adopts is generally two kinds, and a kind of is pressure type temperature controller, and a kind of is platinum resistor temperature measuring instrument.Hydraulic coupling formula temperature controller is to utilize a capillary that the original paper of temp probe and measuring pressure is linked up, and the fluid temperature in probe is consistent with transformer, according to expanding with heat and contract with cold, by kapillary, pressure-sensitive original paper is produced to a pressure.Pressure-sensitive original paper is measured pressure, then by conversion original paper, pressure is converted to temperature value.In the middle of this conversion, have certain error, operation certain hour needs check; Platinum resistor temperature measuring instrument is that comparatively speaking, oil temperature is to be worth more accurately in the way of the inner pre-buried optical fiber temperature-measurement element direct temperature measurement of winding, and winding temperature is not too accurate, so application is not extensive.
Application number is that 201110213673.1 invention has related to a kind of Intelligent temperature control instrument of dry type transformer, comprises temperature collect module, single chip control module, Temperature Setting module, automatic trip module and transformer refrigeration fan; Described single chip control module is connected with temperature collect module, Temperature Setting module, automatic trip module, transformer refrigeration fan respectively, also comprises a LED temperature display module being connected with single chip control module, an automatic alarm module being connected with automatic trip module.The invention solves in prior art the accurately problem of control transformer working temperature, realized the temperature of dry-type transformer has been controlled, when transformer temperature is higher than warning during temperature, can automatic trip disconnect transformer, and report to the police, improve reliability when dry-type transformer moves, extended the life-span of dry-type transformer.
Application number is that 201320437819.5 utility model discloses a kind of equipment of simultaneously monitoring transformer oil surface and winding temperature, be provided with temperature sensor and mutual inductor, temperature sensor joins by operation amplifier filtering circuit A and single-chip microcomputer, the output of mutual inductor is joined by AC current transducer and operation amplifier filtering circuit B and single-chip microcomputer, also be connected to display screen, warning driving circuit, oil surface temperature signal output apparatus, winding temperature signal output apparatus and communication interface circuit with single-chip microcomputer, output and the warning device of warning driving circuit join.Can monitor transformer oil surface and winding temperature simultaneously, avoid prior art to need substep monitoring and problem, the problem includes: troublesome poeration, monitoring equipment complex structure, high in cost of production problem.
Application number is that 201320118695.4 utility model discloses a kind of for monitoring the intelligent electric energy meter of temperature of oil in transformer, comprise intelligent electric energy meter table meter and the oil temperature monitoring modular being connected by connection with intelligent electric energy meter table meter, oil temperature monitoring modular is connected with oil temperature sensor.By connect a temperature monitoring system on traditional intelligent electric energy meter, by RS485 connection by the oil temperature data acquisition of transformer and upload to intelligent electric energy meter, utilize its LCDs that temperature data is shown, utilize the high precision real-time operation of intelligent electric energy meter simultaneously, whether the oil temperature that judges transformer surpasses alarm limit, once, be convenient to Surveillance center and process in time the too high fault of temperature of oil in transformer to host computer and Surveillance center over the Internet Transmission that passes through electric energy meter.With prior art, compare, make full use of the data transmission network of calculation resources, LCD display resource and the intelligent grid of existing intelligent electric energy meter core processor, there is advantage simple in structure, easy for installation, input cost is low.
Yet, such scheme or need to configure in transformer production process, the single-minded not and range of application of temp sensing function not extensively, for the following transformer of present capacity 500KVA, mostly do not configure special temperature measuring equipment, and need managerial personnel to check specially, there is no automatic reminding function, even if intelligent temperature controller is installed, also there is the deficiencies such as cost is higher, inconvenient maintenance, therefore need invention badly a kind of simple and practical, cheap, be easy to the oil temperature monitoring alarm device of installation and maintenance, solve the deficiency of problems.
Summary of the invention
The invention provides a kind of absorption type temperature of oil in transformer monitoring alarm device and using method, temperature of oil in transformer is monitored in real time, when it is during higher than normal oil temperature, just can be sent alerting signal, automatically take emergency measures and remind staff to carry out Inspection and maintenance, preventing that transformer from burning.
For achieving the above object, the technical solution used in the present invention is: a kind of absorption type temperature of oil in transformer monitoring alarm device, comprise pedestal and rely on power module, temperature sensor, temperature controller, actuator and the display that pedestal is installed, described power module is connected with described temperature controller, described actuator, described display respectively, and described temperature controller is connected with described temperature sensor, described display, described actuator respectively.
Described temperature sensor comprises temperature-sensitive module, and described temperature-sensitive module is embedded in base bottom surface.
Described pedestal is magnetic material product, is adsorbed in transformer shell external surface.
Described temperature controller comprises single-chip microcomputer and the modulus conversion chip being connected with single-chip microcomputer respectively, man-machine interface and data output.
Described actuator comprises audible-visual annunciator and signal generator.
Described display comprises data setting panel and LED display panel.
Described data setting panel comprises several data load button and order buttons.
Described power module adopts external source operated type or lithium cell charging formula, and charging inlet and charging indicator light are set on power module.
A using method for absorption type temperature of oil in transformer monitoring alarm device, comprises the following steps:
1) open the operating switch on display pannel, observe panel and whether show normally, as undesired, whether check dead electricity or investigate other faults;
2) select the installation position of transformer to be measured, assurance temperature-sensitive module fully contacts with detected part: as need are installed on transformer surface, need to keep the smooth bright and clean of surface, pedestal is adsorbed in to tested point, as need in measuring transformer warm, for example conservator formula transformer, can be extended temperature-sensitive module to put into the direct contact measurement of conservator by signal transmssion line;
3) on data setting panel, the value of performing an action is set, and comprises temperature alarming value and shutdown value, if employing is that outside surface absorption type is measured, needs to consider transformer case internal-external temperature difference factor;
4) signal generator of actuator is mainly to export steering order signal when reporting to the police or shut down, and when transformer adopting remote central is controlled, the lead-out terminal of actuator is connected to the warning end and shutdown end of central controller;
5) all installations, set, after connection work is ready, enter the monitoring, alarming stage: the temperature-sensitive module by temperature controller receives temperature signal, through signal, amplify, A/D conversion enters single-chip microcomputer and carries out interruption comparison program, measured value with pass through control panel, the setting value of man-machine interface input compares, comparative result transfers to display on the one hand, displays temperature measured value, on the other hand, if reach alarming value/shutdown value, not only in display display alarm/shutdown indication, also signal is transferred to actuator, start the audible-visual annunciator of actuator, and pass through signal generator, send control warning/stopping signal far away,
6) carry out regular repair and maintenance, be advisable with 3 to 5 days, as adopt rechargeable supply source, need to charge in time according to life cycle, each charging is extinguished and is advisable with 10 to 12 hours or charging indicator light.
Traditional pressure type temperature controller and platinum resistor temperature measuring instrument can not solve or accurately and timely provide monitoring alarm function, these two kinds of devices all configure in transformer production process, the following transformer of capacity 500KVA not configuration mostly now, and need managerial personnel to check specially, there is no automatic reminding function, cost is higher, inconvenient maintenance.
And absorption type temperature of oil in transformer monitoring alarm device in the present invention designs based on temperature-sensitive principle, the core of temperature-sensitive module can be selected oil temperature than more sensitive platinum resistance thermometer sensor,, also can select thermometal temperature-measurement material, warning device arranges the pedestal of magnetic material product, temperature-sensitive module relies on pedestal, both adsorbable in transformer outside surface, can extend to installation for transformer place again, make the measurement of temperature more accurate and accurate.By temperature signal, the form by current signal shows temperature-sensitive module, amplifies after filtering and analog to digital conversion, then sends in single-chip microcomputer and sample.In process due to temperature-sensitive module samples temperature, can be subject to the interference of a large amount of clutter or industrial frequency noise, low-pass filter filtering can be set, guarantee the degree of accuracy of signal, the signal after filtering immediately amplifies, to realize calling of subsequent treatment module.Single-chip microcomputer is for fear of response lag, reports to the police not in time or inaccurate; single-chip microcomputer set timer Interruption; every a shorter time interval, produce an Interruption signal; and proceed to Interrupt Subroutine; subroutine is from the I/O mouth reading current signal of single-chip microcomputer; and call Interruption A/D and process subroutine; immediately change resulting result and warning/shutdown value comparison of adjusting of being scheduled to by A/D; if be greater than setting valve; to display and actuator output alarm/stopping signal, the processing of reporting to the police/shut down.
Single-chip microcomputer can adopt AVR series, single-chip microcomputer is connected with the data setting panel of display by man-machine interface, receive the setting valve data that data setting panel is inputted, and put into the data register of single-chip microcomputer, while facilitating the data processing subroutine of single-chip microcomputer to compare, call.Wherein, Single Chip Microcomputer (SCM) program comprises master routine, interrupt service subroutine, Interruption service subprogram, data processing subroutine, all can adopt C language to design, and is packaged in and conveniently in the data register of single-chip microcomputer directly calls.Wherein, the initial work of port, timer, constant, variable and other amounts of the main completion system of system master routine completes leakage current circulation demonstration work simultaneously; Interrupt service subroutine mainly judges according to the data of the T0IF position of INTCON register whether TMR0 overflows, and proceeds to TMR0 interrupt entrance subroutine as overflowed; According to the data of the RBIF position of INTCON register, judge that whether RB has input to change, and proceeds to keyboard interrupt entrance subroutine as changed; Interruption service subprogram mainly completes Interruption sampling task, and 1 ms carries out 1 time to be processed, every time continuous 6 samplings, and sampled result deposits specified memory unit in; Data processing subroutine mainly completes asks data mean value, carries out data comparison, determines whether to report to the police/shut down etc.
LED display panel in display and the audible-visual annunciator in actuator are the critical pieces that carries out indication directly perceived on device body.LED display panel, when not reporting to the police, is mainly to show in real time the current temperature value getting from single-chip microcomputer sampling; In process, compare, while there is reporting to the police/shutting down situation, meeting display alarm/outage information on one side LED panel, on the other hand, audible-visual annunciator also can be received the signal of data output, carries out alarm operation, thereby has played the object of dual-alarm.
Data load button in data setting panel, comprises ' 0 ' to ' 9 ' ten arabic numeral enter key, order button includes alarm settings, shut down sets, returns, confirmation, machine open/close, detection etc. automatically; Signal generator in actuator is mainly for warning/stopping signal; can send teleinstruction transmission; be convenient to Central Control Room engineer station or transformer integral body power distribution cabinet etc. and carry out Long-distance Control and plan as a whole processing, embodied good for power distribution automation utilization theory.
Power module adopts external source operated type or lithium cell charging formula, and charging inlet and charging indicator light are set on power module.For the good transformer in installation site, the source of getting is more convenient, can pass through the external 220V power supply of power lead, and the voltage transformation by device, obtains operating voltage; For the transformer of getting source inconvenience, can adopt the power supply of lithium cell charging formula, service time is long, battery altering is convenient, meanwhile, and this double source pattern, can also guarantee when civil power power-off, built-in lithium electricity comes into operation rapidly, makes monitoring in real time there is no dead angle, improves to a great extent the reliability of passenger's device.
So this oil temperature monitoring alarm device, measures accurate, easy for installationly, when oil temperature is during higher than normal oil temperature, alarm just can carry out real-time judgment, accurately and timely sends warning/stopping signal, and reminding user carries out Inspection and maintenance, prevents that transformer from burning.This monitoring alarm device not only can be applied in all kinds transformer; warning/shutdown temperature can arrange voluntarily according to running environment, temperature classification, oil temperature error, transformer model; and simple in structure; cost is low; long service life, easily installation and maintenance, displays temperature is intuitively accurate; can install whenever and wherever possible, be the new technology that is easy to apply.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the use process flow diagram of apparatus of the present invention.
Fig. 3 is the schematic appearance of apparatus of the present invention in embodiment mono-.
Embodiment
Embodiment mono-
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of absorption type temperature of oil in transformer monitoring alarm device and using method, be mainly used in the conservator temperature of measuring transformer, comprise pedestal 13 and rely on power module 1, temperature sensor 2, temperature controller, actuator and the display that pedestal 13 is installed, pedestal 13 is magnetic material product, be adsorbed in transformer shell external surface, power module is connected with temperature controller, actuator, display respectively, and temperature controller is connected with temperature sensor, display, actuator respectively.
Temperature sensor 2 comprises temperature-sensitive module, and temperature-sensitive module is extended and put into the direct contact measurement of conservator by signal transmssion line; Modulus conversion chip 4, man-machine interface 5 and data output 6 that temperature controller comprises single-chip microcomputer 3 and is connected with single-chip microcomputer respectively.
Actuator comprises audible-visual annunciator 7 and signal generator 8; Display comprises data setting panel 9 and LED display panel 10; Data setting panel comprises several data load button and order buttons; Power module adopts lithium cell charging formula, is direct current 24V operating voltage, and charging inlet 11 and charging indicator light 12 are set on power module.
When it uses, should first open the operating switch on display pannel, observe panel and whether show normally, as undesired, whether check dead electricity or investigate other faults; Select the installation position of transformer to be measured, assurance temperature-sensitive module fully contacts with detected part: keep the smooth bright and clean of transformer surface, pedestal is adsorbed in to transformer surface, owing to being the conservator temperature of measuring transformer, belong to temperature in transformer, by signal transmssion line, temperature-sensitive module is extended and put into the direct contact measurement of conservator;
On data setting panel, the value of performing an action is set, comprise temperature alarming value and shutdown value, data load button in data setting panel, comprise ' 0 ' to ' 9 ' ten arabic numeral enter key, order button includes alarm settings, shut down sets, returns, confirmation, machine open/close, detection etc. automatically; Due to the direct Contact Temperature point of temperature-sensitive module, so direct uncompensated measurement, due to rules regulation, pasta place, transformer upper strata temperature must not surpass 85 ℃, therefore set alarm temperature value, is 85 ℃, and shutdown value is 90 ℃.In the present embodiment, device belongs on the spot to be measured, not associated with long-range middle control generation, therefore can the lead-out terminal of signal generator is idle.
After all installations, setting, connection work are ready; enter the monitoring, alarming stage: the temperature-sensitive module by temperature controller receives temperature signal; through signal amplification, A/D conversion, enter single-chip microcomputer and carry out interruption comparison program; measured value and the setting value by control panel, man-machine interface input are compared; comparative result transfers to display on the one hand; displays temperature measured value; on the other hand; if reach alarming value/shutdown value; not only in display display alarm/shutdown indication; also signal is transferred to actuator, start the audible-visual annunciator of actuator.Device need carry out regular repair and maintenance, is advisable with 3 to 5 days, and what adopt due to the present embodiment is rechargeable supply source, needs to charge in time according to life cycle, and each charging is extinguished and is advisable with 10 to 12 hours or charging indicator light.
Embodiment bis-
Absorption type temperature of oil in transformer monitoring alarm device and a using method, be mainly used in the upper strata oil surface temperature of measuring transformer, is with embodiment mono-difference, and temperature sensor comprises temperature-sensitive module, and temperature-sensitive module is embedded in base bottom surface; Power module adopts the external power supply of 220V, and 220V civil power enters power module and produces 24V direct-current working volts through transformation.
When it uses, should first open the operating switch on display pannel, observe panel and whether show normally, as undesired, whether check dead electricity or investigate other faults; Select the installation position of transformer to be measured, assurance temperature-sensitive module fully contacts with detected part: keep the smooth bright and clean of transformer surface, pedestal is adsorbed in to transformer surface, and temperature-sensitive module is embedded in base bottom surface, guarantees the accurate measurement to transformer shell temperature.
On data setting panel, the value of performing an action is set, comprise temperature alarming value and shutdown value, data load button in data setting panel, comprise ' 0 ' to ' 9 ' ten arabic numeral enter key, order button includes alarm settings, shut down sets, returns, confirmation, machine open/close, detection etc. automatically; Because temperature-sensitive module does not have direct Contact Temperature point, thus must adopt temperature compensation to measure, due to rules regulation; pasta place, transformer upper strata temperature must not surpass 85 ℃, and after tested, transformer internal-external temperature difference is at 15 ℃; therefore setting alarm temperature value is 70 ℃, shutdown value is 75 ℃.In the present embodiment; device belongs on the spot and the dual measurement of control far away; owing to occurring associated with long-range middle control; therefore the signal generator in actuator need to be connected to the whole power distribution cabinet of long-range Central Control Room engineer station or transformer; mainly to send teleinstruction for warning/stopping signal; be convenient to long-range middle control and monitor in real time temperature of oil in transformer value, the Long-distance Control that can report to the police/shut down is processed with pool, has embodied good for power distribution automation utilization theory.
After all installations, setting, connection work are ready; enter the monitoring, alarming stage: the temperature-sensitive module by temperature controller receives temperature signal; through signal amplification, A/D conversion, enter single-chip microcomputer and carry out interruption comparison program; measured value and the setting value by control panel, man-machine interface input are compared; comparative result transfers to display on the one hand; displays temperature measured value; on the other hand; if reach alarming value/shutdown value; not only in display display alarm/shutdown indication; also signal is transferred to actuator, start the audible-visual annunciator of actuator.Device need carry out regular repair and maintenance, is advisable with 3 to 5 days, and what adopt due to the present embodiment is rechargeable supply source, needs to charge in time according to life cycle, and each charging is extinguished and is advisable with 10 to 12 hours or charging indicator light.
Claims (10)
1. an absorption type temperature of oil in transformer monitoring alarm device, it is characterized in that: comprise pedestal and rely on power module, temperature sensor, temperature controller, actuator and the display that pedestal is installed, described power module is connected with described temperature controller, described actuator, described display respectively, and described temperature controller is connected with described temperature sensor, described display, described actuator respectively.
2. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 1, is characterized in that: described temperature sensor comprises temperature-sensitive module, and described temperature-sensitive module is embedded in base bottom surface.
3. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 2, is characterized in that: described pedestal is magnetic material product, is adsorbed in transformer shell external surface.
4. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 2 or claim 3, is characterized in that: described temperature-sensitive module is extended to put into by signal transmssion line and treated thermometric position.
5. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 1, is characterized in that: described temperature controller comprises single-chip microcomputer and the modulus conversion chip being connected with single-chip microcomputer respectively, man-machine interface and data output.
6. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 1, is characterized in that: described actuator comprises audible-visual annunciator and signal generator.
7. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 1, is characterized in that: described display comprises data setting panel and LED display panel.
8. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 7, is characterized in that: described data setting panel comprises several data load button and order buttons.
9. absorption type temperature of oil in transformer monitoring alarm device as claimed in claim 1, is characterized in that: described power module adopts external source operated type or lithium cell charging formula, and charging inlet and charging indicator light are set on power module.
10. a using method for absorption type temperature of oil in transformer monitoring alarm device, comprises the following steps:
1) open the operating switch on display pannel, observe panel and whether show normally, as undesired, whether check dead electricity or investigate other faults;
2) select the installation position of transformer to be measured, assurance temperature-sensitive module fully contacts with detected part: as need are installed on transformer surface, need to keep the smooth bright and clean of surface, pedestal is adsorbed in to tested point, as need in measuring transformer warm, for example conservator formula transformer, can be extended temperature-sensitive module to put into the direct contact measurement of conservator by signal transmssion line;
3) on data setting panel, the value of performing an action is set, and comprises temperature alarming value and shutdown value, if employing is that outside surface absorption type is measured, needs to consider transformer case internal-external temperature difference factor;
4) signal generator of actuator is mainly to export steering order signal when reporting to the police or shut down, and when transformer adopting remote central is controlled, the lead-out terminal of actuator is connected to the warning end and shutdown end of central controller;
5) all installations, set, after connection work is ready, enter the monitoring, alarming stage: the temperature-sensitive module by temperature controller receives temperature signal, through signal, amplify, A/D conversion enters single-chip microcomputer and carries out interruption comparison program, measured value with pass through control panel, the setting value of man-machine interface input compares, comparative result transfers to display on the one hand, displays temperature measured value, on the other hand, if reach alarming value/shutdown value, not only in display display alarm/shutdown indication, also signal is transferred to actuator, start the audible-visual annunciator of actuator, and pass through signal generator, send control warning/stopping signal far away,
6) carry out regular repair and maintenance, be advisable with 3 to 5 days, as adopt rechargeable supply source, need to charge in time according to life cycle, each charging is extinguished and is advisable with 10 to 12 hours or charging indicator light.
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| CN201410417505.8A CN104166359A (en) | 2014-08-22 | 2014-08-22 | Adsorption type transformer oil temperature monitoring alarm device and use method |
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| CN104776931A (en) * | 2015-04-20 | 2015-07-15 | 国家电网公司 | Distribution transformer temperature rise test device based on thermistors |
| CN105577191A (en) * | 2015-12-11 | 2016-05-11 | 中国航空工业集团公司西安航空计算技术研究所 | Integrated ADC information sharing circuit based on Xilin FPGA |
| CN107844143A (en) * | 2016-09-20 | 2018-03-27 | 无锡亮源激光技术有限公司 | A kind of automatic temperature-adjusting control Laser Diode System |
| CN108534908A (en) * | 2018-03-23 | 2018-09-14 | 国网河北省电力有限公司电力科学研究院 | Transformer oil surface temperature sensor |
| CN112735789A (en) * | 2021-01-31 | 2021-04-30 | 江苏电子信息职业学院 | High-voltage transformer electronic protection equipment |
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Application publication date: 20141126 |