CN105301395A - SF6 transformer fault early warning apparatus and application method thereof - Google Patents
SF6 transformer fault early warning apparatus and application method thereof Download PDFInfo
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- CN105301395A CN105301395A CN201510723194.2A CN201510723194A CN105301395A CN 105301395 A CN105301395 A CN 105301395A CN 201510723194 A CN201510723194 A CN 201510723194A CN 105301395 A CN105301395 A CN 105301395A
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Abstract
The invention relates to an SF6 transformer fault early warning apparatus and an application method thereof. The apparatus comprises an SF6 transformer body, a temperature measurement sensing system, and a control module and an alarm which are installed in a remote control room. The SF6 transformer body internally comprises a transformer winding and a transformer iron core; the temperature measurement sensing system is installed on the SF6 transformer body for non-contact type continuous scanning temperature measurement on the transformer winding and the transformer iron core in the SF6 transformer body; the temperature measurement sensing system is also connected with the input end of the control module for transmitting detected temperature signals to the control module; and the output end of the control module is connected with the alarm. According to the invention, continuous accurate temperature measurement work is finished through a non-contact mode, early warnings about overheating faults in an SF6 transformer are accurately and automatically given in an online mode, whole-course tracking is realized, fault development is strictly supervised, the purpose of guaranteeing safe operation of the transformer is achieved, and compared to a conventional SF6 transformer temperature measurement early warning apparatus, the SF6 transformer fault early warning apparatus provided by the invention has the great advantage of ensuring safe, economical and reliable operation.
Description
Technical field
The present invention relates to SF
6the fault early-warning detection method field of transformer, particularly a kind of SF
6transformer fault prior-warning device and application method thereof.
Background technology
SF
6transformer is in operation due to electric current and magnetic fields, and its inner winding and iron core can produce amount of heat, need by its inner SF filled
6gas cools, to keep equalized temperature, when on transformer overload or Transformer Winding, iron core circuit for generating and magnetic circuit during fault, all can there is mid-winter phenomenon in the winding in transformer and iron core, overload is more, or fault is more serious, then mid-winter is more severe.Because inside transformer exists high voltage, the temperature probe of general direct contact is difficult to directly contact with iron core with winding carry out online accurate thermometric, traditional transformer winding, iron core thermometric can only pass through indirect thermometric, as oil temperature, the measurement SF of measuring transformer inside
6gas temperature estimates winding temperature, and these all exist serious delayed and inaccurate situation, and traditional transformer is when oil temperature or SF being detected
6when gas temperature exceedes settings, then send early warning signal, warning staff takes measures, and sometimes because Transformer Winding, iron core sudden serious overheating fault occur, steep temperature rise, but temperature conduction is to transformer oil or SF
6time detected in gas medium is seriously delayed, the pernicious power grid accident cause Accident of Transformer to expand, even cause transformer to burn, exploding.
Summary of the invention
In view of this, the object of this invention is to provide a kind of SF
6transformer fault prior-warning device and application method thereof, adopt cordless to complete thermometric work accurately continuously, to SF by infrared temperature probe
6the overheating fault of inside transformer carries out on-line automatic early warning accurately, and all-the-way tracking, fault progression of looking over one's shoulder, ensures the object that transformer safety is run, with traditional SF
6transformer thermometric prior-warning device is compared, have ensure safety, the huge advantage of economy, reliability service.
The present invention adopts following scheme to realize: a kind of SF
6transformer fault prior-warning device, comprises a SF
6transformer body, a temperature measurement sensing system and the control module be installed in pulpit, a distant place and an alarm; Described SF
6transformer Winding and transformer core is comprised in transformer body; Described temperature measurement sensing system is installed on described SF
6on transformer body, in order to described SF
6transformer Winding in transformer body and transformer core carry out contactless continuous sweep thermometric; Described temperature measurement sensing system is also connected with the input end of described control module, in order to the temperature signal detected is transferred to described control module; The output terminal of described control module is connected with described alarm.
Further, described temperature measurement sensing system comprises and is arranged on described SF
6temperature probe on transformer body outer wall, stretch into described SF
6be arranged on described SF in transformer body
6infrared temperature probe on transformer body inwall and the fiber optic cables of signal transmission; The infrared-ray that the transmitting terminal of described infrared temperature probe sends is to described SF
6transformer Winding in transformer body and transformer core carry out non-contacting continuous sweep thermometric, the other end of described infrared temperature probe is electrically connected at the input end of described temperature probe, in order to the temperature signal detected is transferred to described temperature probe; Described temperature probe amplifies in order to the temperature signal described infrared temperature probe transmission come, the output terminal of described temperature probe is connected to the input end of described control module by described fiber optic cables, in order to the temperature signal of amplification is transferred to described control module.
Further, described infrared temperature probe is also connected with a probe device of rotation driving, in order to drive described infrared temperature probe to rotate by fixed rate, in effective range to described SF
6winding in transformer body and iron core carry out infrared scan thermometric.
Further, the different temperature value of the Transformer Winding detected and transformer core is judged the fault severity level of transformer and carries out controlling alarm and send different alerting signals by described control module, and described different temperature value comprises normal working temperature value range, slight overtemperature value, moderate overtemperature value and serious overtemperature value; Described control module is also penetrating SF according to infrared-ray
6gas from penetrate reflectivity different between air and decay is revised, accurate in order to guarantee the temperature value detected.
Further, described control module is PLC or microcomputer control chip.
Further, described alarm is electrically connected at the output terminal of described control module, and the instruction that described alarm sends according to described control module sends multi-form early warning, and early warning form comprises sound and light alarm and early warning alarming sound.
Further, described SF
6transformer body inside is filled with SF
6gas, in order to cool described SF
6transformer Winding in transformer body and transformer core.
The present invention also adopts following methods to realize: a kind of SF
6the application method of transformer fault prior-warning device, comprises the following steps:
Step S1:SF
6transformer normally runs, and the Transformer Winding of its inside and transformer core heating, fill SF
6gas cools, in order to keep SF
6the equalized temperature of transformer body inside;
Step S2: open temperature measurement sensing system, control module and alarm;
Step S3: the infrared temperature probe in described temperature measurement sensing system starts to carry out continuous infrared scan thermometric to Transformer Winding and transformer core in effective range by fixed rate;
Step S4: the temperature signal detected is transferred to temperature probe by described infrared temperature probe, described temperature probe transfers to control module after being amplified by temperature signal;
Step S5: described control module according to temperature information to SF
6the ruuning situation of transformer judges, if described SF
6transformer normally runs, then control module is failure to actuate; If described SF
6transformer Operation Status is abnormal, then control module controls alarm and sends alerting signal.
Further, in described step S5, SF is worked as
6during transformer normal operation, the temperature value of its Transformer Winding and transformer core is in normal working temperature value range, and described control module is failure to actuate; Work as SF
6the slight running overload of transformer and after running a period of time or when there is slight overheating fault, when the temperature value of its Transformer Winding and transformer core exceedes slight overtemperature value, described control module sends instruction control alarm and sends slightly overheated alerting signal; Work as SF
6inside transformer winding overheating fault continues development, and when the temperature value of its Transformer Winding and transformer core reaches moderate overtemperature value, described control module sends instruction control alarm and sends the overheated alerting signal of moderate; Work as SF
6inside transformer continues temperature rise, and when the temperature value of its Transformer Winding and transformer core reaches serious overtemperature value, described control module sends instruction and controls the alerting signal that alarm sends hyperthermia and superheating; Work as SF
6when Transformer Winding in transformer and the temperature value of transformer core are down in normal working temperature value range, described control module automatic closing and alarm device, stop alarm.
Compared with prior art, the present invention has following beneficial effect: 1, keep non-contacting safe distance, again because infrared-ray is at SF by the winding with high-tension electricity in infrared temperature probe and transformer, core portion
6there are good penetrance and very little decay in gas medium, therefore launched by infrared temperature probe and accept infrared temperature-sensitive signal, just can complete thermometric work accurately continuously.2, the control module of the present invention's design, be carry out design compilation program according to the normal working temperature value range of Transformer Winding, slight overtemperature value, moderate overtemperature value and serious overtemperature value etc. respectively, control module is also penetrating SF according to infrared-ray
6gas from penetrate reflectivity different between air and decay is revised.3, at SF
6transformer is in operation, control module is carried out analysis according to program prepared in advance to temperature value and is judged, when in transformer during winding generation overheating fault, control module according to the order of severity of fault, can control alarm and sends different early warning alarming sounds, or different sound and light program warnings, work as failture evacuation, when temperature is reduced to below settings, alarm stop alarm, to reach SF
6the early stage slight overheating fault of inside transformer carries out on-line automatic early warning accurately, and all-the-way tracking, fault progression of looking over one's shoulder, ensures the object that transformer safety is run, with traditional SF
6transformer thermometric prior-warning device is compared, have ensure safety, the huge advantage of economy, reliability service.
Accompanying drawing explanation
Fig. 1 is a kind of SF of the embodiment of the present invention
6transformer fault prior-warning device mounting vertical plane figure.
Fig. 2 is a kind of SF of the embodiment of the present invention
6transformer fault prior-warning device mounting plane and workflow diagram.
Fig. 3 is a kind of SF of the embodiment of the present invention
6the infrared temperature probe of transformer fault prior-warning device carries out one of rotary scanning thermometric work figure to winding in transformer.
Fig. 4 is a kind of SF of the embodiment of the present invention
6the infrared temperature probe of transformer fault prior-warning device carries out two figure of rotary scanning thermometric work to winding in transformer.
Fig. 5 is a kind of SF of the embodiment of the present invention
6transformer fault prior-warning device principle of work block scheme.
Shown by reference numeral illustrates:
1-SF
6transformer body; 2-Transformer Winding; 3-transformer core; 4-SF
6gas medium; 5-infrared temperature probe; 6-pops one's head in device of rotation driving; 7-infrared ray; 8-temperature probe; 9-fiber optic cables; 10-control module; 11-alarm; 12-transformer cooler.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
The present embodiment provides a kind of SF
6transformer fault prior-warning device, as shown in Figures 1 to 5, this device comprises a SF
6transformer body 1, one temperature measurement sensing system and control module 10 and the alarm 11 be installed in pulpit, a distant place; Described SF
6transformer Winding 2 and transformer core 3 is comprised in transformer body; Described SF
6transformer body 1 is also connected with transformer cooler 12; Described temperature measurement sensing system is installed on described SF
6on transformer body, in order to described SF
6transformer Winding 2 in transformer body carries out contactless continuous sweep thermometric with transformer core 3; Described temperature measurement sensing system is also connected with the input end of described control module 10, in order to the temperature signal detected is transferred to described control module 10; The output terminal of described control module 10 is connected with described alarm 11.
In the present embodiment, described temperature measurement sensing system comprises and is arranged on described SF
6temperature probe 8 on transformer body outer wall, stretch into described SF
6be arranged on described SF in transformer body
6infrared temperature probe 5 on transformer body inwall and the fiber optic cables 9 of signal transmission; The infrared-ray 7 that the transmitting terminal of described infrared temperature probe 5 sends is to described SF
6transformer Winding 2 in transformer body and transformer core 3 carry out non-contacting continuous sweep thermometric, the other end of described infrared temperature probe 5 is electrically connected at the input end of described temperature probe 8, in order to the temperature signal detected is transferred to described temperature probe 8; Described temperature probe 8 amplifies in order to described infrared temperature probe 5 to be transmitted the temperature signal come, the output terminal of described temperature probe 5 is connected to the input end of described control module 10 by described fiber optic cables 9, in order to the temperature signal of amplification is transferred to described control module 10.
In the present embodiment, described infrared temperature probe 5 is also connected with a probe device of rotation driving 6, rotates, in effective range to described SF by fixed rate in order to drive described infrared temperature probe 5
6transformer Winding 2 in transformer body and transformer core 3 carry out infrared scan thermometric.
In the present embodiment, the different temperature value of the Transformer Winding detected and transformer core is judged the fault severity level of transformer and carries out controlling alarm and send different alerting signals by described control module 10, and described different temperature value comprises normal working temperature value range, slight overtemperature value, moderate overtemperature value and serious overtemperature value; Described control module 10 is also penetrating SF according to infrared-ray
6gas from penetrate reflectivity different between air and decay is revised, accurate in order to guarantee the temperature value detected.
In the present embodiment, described control module 10 is PLC or microcomputer control chip.
In the present embodiment, described alarm 11 is electrically connected at the output terminal of described control module 10, and the instruction that described alarm 11 sends according to described control module sends multi-form early warning, and early warning form comprises sound and light alarm and early warning alarming sound.
In the present embodiment, described SF
6in transformer body, 1 is filled with SF
6gas 4, in order to cool described SF
6transformer Winding 2 in transformer body and transformer core 3.
In the present embodiment, a kind of SF
6the application method of transformer fault prior-warning device, comprises the following steps:
Step S1:SF
6transformer normally runs, and Transformer Winding 2 and the transformer core 3 of its inside generate heat, and fills SF
6gas cools, in order to keep SF
6the equalized temperature of transformer body inside;
Step S2: open temperature measurement sensing system, control module 10 and alarm 11;
Step S3: the infrared temperature probe 5 in described temperature measurement sensing system starts to carry out continuous infrared scan thermometric to Transformer Winding 2 and transformer core 3 in effective range by fixed rate;
Step S4: the temperature signal detected is transferred to temperature probe 8 by described infrared temperature probe 5, described temperature probe 8 transfers to control module 10 after being amplified by temperature signal;
Step S5: described control module 10 according to temperature information to SF
6the ruuning situation of transformer judges, if described SF
6transformer normally runs, then control module is failure to actuate; If described SF
6transformer Operation Status is abnormal, then control module controls alarm 11 and sends alerting signal.
In the present embodiment, in described step S5, SF is worked as
6during transformer normal operation, the temperature value of its Transformer Winding and transformer core is in normal working temperature value range, and described control module is failure to actuate;
Work as SF
6the slight running overload of transformer and after running a period of time or when there is slight overheating fault, when the temperature value of its Transformer Winding and transformer core exceedes slight overtemperature value, described control module sends instruction control alarm and sends slightly overheated alerting signal, warning staff looks over one's shoulder transformer operation conditions, and under-capacity operation;
Work as SF
6when there is slight overheating fault in transformer, when the temperature value of its Transformer Winding and transformer core exceedes slight overtemperature value, described control module sends instruction control alarm and sends slightly overheated alerting signal, warning staff searches reason, to look over one's shoulder transformer operation conditions, and plan has a power failure and checks;
Work as SF
6inside transformer winding overheating fault continues development, when the temperature value of its Transformer Winding and transformer core reaches moderate overtemperature value, described control module sends instruction control alarm and sends the overheated alerting signal of moderate, warning staff searches reason, takes measures, arranging as early as possible has a power failure checks, eliminates overheating fault;
Work as SF
6inside transformer continues temperature rise, when the temperature value of its Transformer Winding and transformer core reaches serious overtemperature value, described control module sends instruction and controls the alerting signal that alarm sends hyperthermia and superheating, and warning staff takes immediate steps, have a power failure inspection immediately, eliminates overheating fault;
Work as SF
6when Transformer Winding in transformer and the temperature value of transformer core are down in normal working temperature value range, described control module automatic closing and alarm device, stop alarm.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. a SF
6transformer fault prior-warning device, is characterized in that comprising: a SF
6transformer body, a temperature measurement sensing system and the control module be installed in pulpit, a distant place and an alarm; Described SF
6transformer Winding and transformer core is comprised in transformer body; Described temperature measurement sensing system is installed on described SF
6on transformer body, in order to described SF
6transformer Winding in transformer body and transformer core carry out contactless continuous sweep thermometric; Described temperature measurement sensing system is also connected with the input end of described control module, in order to the temperature signal detected is transferred to described control module; The output terminal of described control module is connected with described alarm.
2. a kind of SF according to claim 1
6transformer fault prior-warning device, is characterized in that: described temperature measurement sensing system comprises and is arranged on described SF
6temperature probe on transformer body outer wall, stretch into described SF
6be arranged on described SF in transformer body
6infrared temperature probe on transformer body inwall and the fiber optic cables of signal transmission; The infrared-ray that the transmitting terminal of described infrared temperature probe sends is to described SF
6transformer Winding in transformer body and transformer core carry out non-contacting continuous sweep thermometric, the other end of described infrared temperature probe is electrically connected at the input end of described temperature probe, in order to the temperature signal detected is transferred to described temperature probe; Described temperature probe amplifies in order to the temperature signal described infrared temperature probe transmission come, the output terminal of described temperature probe is connected to the input end of described control module by described fiber optic cables, in order to the temperature signal of amplification is transferred to described control module.
3. a kind of SF according to claim 2
6transformer fault prior-warning device, is characterized in that: described infrared temperature probe is also connected with a probe device of rotation driving, in order to drive described infrared temperature probe to rotate by fixed rate, in effective range to described SF
6winding in transformer body and iron core carry out infrared scan thermometric.
4. a kind of SF according to claim 1
6transformer fault prior-warning device, it is characterized in that: the different temperature value of the Transformer Winding detected and transformer core is judged the fault severity level of transformer and carries out controlling alarm and send different alerting signals by described control module, and described different temperature value comprises normal working temperature value range, slight overtemperature value, moderate overtemperature value and serious overtemperature value; Described control module is also penetrating SF according to infrared-ray
6gas from penetrate reflectivity different between air and decay is revised, accurate in order to guarantee the temperature value detected.
5. a kind of SF according to claim 1
6transformer fault prior-warning device, is characterized in that: described control module is PLC or microcomputer control chip.
6. a kind of SF according to claim 1
6transformer fault prior-warning device, it is characterized in that: described alarm is electrically connected at the output terminal of described control module, the instruction that described alarm sends according to described control module, sends multi-form early warning, and early warning form comprises sound and light alarm and early warning alarming sound.
7. a kind of SF according to claim 1
6transformer fault prior-warning device, is characterized in that: described SF
6transformer body inside is filled with SF
6gas, in order to cool described SF
6transformer Winding in transformer body and transformer core.
8. a SF as claimed in claim 1
6the application method of transformer fault prior-warning device, is characterized in that: comprise the following steps:
Step S1:SF
6transformer normally runs, and the Transformer Winding of its inside and transformer core heating, fill SF
6gas cools, in order to keep SF
6the equalized temperature of transformer body inside;
Step S2: open temperature measurement sensing system, control module and alarm;
Step S3: the infrared temperature probe in described temperature measurement sensing system starts to carry out continuous infrared scan thermometric to Transformer Winding and transformer core in effective range by fixed rate;
Step S4: the temperature signal detected is transferred to temperature probe by described infrared temperature probe, described temperature probe transfers to control module after being amplified by temperature signal;
Step S5: described control module according to temperature information to SF
6the ruuning situation of transformer judges, if described SF
6transformer normally runs, then control module is failure to actuate; If described SF
6transformer Operation Status is abnormal, then control module controls alarm and sends alerting signal.
9. a kind of SF according to claim 8
6the application method of transformer fault prior-warning device, is characterized in that:
In described step S5, work as SF
6during transformer normal operation, the temperature value of its Transformer Winding and transformer core is in normal working temperature value range, and described control module is failure to actuate;
Work as SF
6the slight running overload of transformer and after running a period of time or when there is slight overheating fault, when the temperature value of its Transformer Winding and transformer core exceedes slight overtemperature value, described control module sends instruction control alarm and sends slightly overheated alerting signal;
Work as SF
6inside transformer winding overheating fault continues development, and when the temperature value of its Transformer Winding and transformer core reaches moderate overtemperature value, described control module sends instruction control alarm and sends the overheated alerting signal of moderate;
Work as SF
6inside transformer continues temperature rise, and when the temperature value of its Transformer Winding and transformer core reaches serious overtemperature value, described control module sends instruction and controls the alerting signal that alarm sends hyperthermia and superheating;
Work as SF
6when Transformer Winding in transformer and the temperature value of transformer core are down in normal working temperature value range, described control module automatic closing and alarm device, stop alarm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723194.2A CN105301395A (en) | 2015-10-29 | 2015-10-29 | SF6 transformer fault early warning apparatus and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723194.2A CN105301395A (en) | 2015-10-29 | 2015-10-29 | SF6 transformer fault early warning apparatus and application method thereof |
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Application publication date: 20160203 |
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