CN105698860A - Current transformer real-time on-line monitoring device - Google Patents
Current transformer real-time on-line monitoring device Download PDFInfo
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- CN105698860A CN105698860A CN201610114379.8A CN201610114379A CN105698860A CN 105698860 A CN105698860 A CN 105698860A CN 201610114379 A CN201610114379 A CN 201610114379A CN 105698860 A CN105698860 A CN 105698860A
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- sulfur hexafluoride
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The present invention relates to a current transformer real-time on-line monitoring device. The monitoring device comprises a sulfur hexafluoride inflatable current transformer main body, a sulfur hexafluoride infrared sensor and a digital signal processor; the sulfur hexafluoride infrared sensor is configured to perform sampling analysis of the sulfur hexafluoride gas in the sulfur hexafluoride inflatable current transformer main body; and the digital signal processor is connected with the sulfur hexafluoride infrared sensor and is configured to determine whether the corresponding alarm operation is performed or not based on the sampling analysis result of the sulfur hexafluoride infrared sensor. The current transformer real-time on-line monitoring device is able to perform real-time state monitoring of the sulfur hexafluoride gas having an insulation effect in a sulfur hexafluoride inflatable current transformer so as to avoid the occurrence of unnecessary accidents.
Description
The present invention is application number is 201510784174.6, the applying date be November 16, denomination of invention in 2015 is the divisional application of the patent of " current transformer real time on-line monitoring device "。
Technical field
The present invention relates to power domain, particularly relate to a kind of current transformer real time on-line monitoring device。
Background technology
Transformer (instrumenttransformer) is also called instrument transformator, is the general designation of current transformer and voltage transformer。High voltage can become low-voltage, big electric current becomes small area analysis, is used for measuring or protecting system。High voltage or big electric current scaling transformation are mainly become normal low voltage (100V) or standard small area analysis (5A or 1A by its function; refer both to rated value), in order to realize measuring instrument, protection equipment and the standardization of automatic controlling device, miniaturization。Transformer can also be used with and separates high-voltage system simultaneously, to ensure the safety of the person and equipment。
Current transformer, its feature utilizing transformer primary, secondary current proportional is made。Its operation principle, equivalent circuit are also identical with general transformator, and simply its primary side winding is connected in circuit-under-test, and the number of turn is little；Vice-side winding connects the low-impedance load such as ammeter, relay current coil, near short circuit。Primary current (i.e. tested electric current) and secondary current depend on the load of test line, and unrelated with the secondary load of current transformer。Owing to secondary is close to short circuit, so former and deputy polygonal voltage U1 and all only small, exciting current I0 is also only small。When current transformer runs, secondary does not allow open circuit。Because once open circuit, primary current all becomes exciting current, make magnetic flux and secondary voltage substantially exceed normal value and jeopardize the person and equipment safety。Therefore, current transformer secondary loop mustn't connect fuse, also just pull down the equipment such as ammeter, relay not in when running without bypass。The mode of connection of current transformer is determined by the service requirement of its connect load。The most frequently used mode of connection is single-phase, three-phase star and incomplete star。
Sulfur hexafluoride inflatable-type current transformer is type most commonly seen in gas-filled type current transformer, but, there is the defect that unreasonable structure, qualification rate are relatively low in sulfur hexafluoride inflatable-type current transformer of the prior art, sulfur hexafluoride inflatable-type current transformer itself lacks the whether normal device mechanism of its duty simultaneously, causing the of low quality of sulfur hexafluoride inflatable-type current transformer of the prior art, safety is poor。
In order to overcome drawbacks described above, the present invention proposes a kind of current transformer real time on-line monitoring device, the framework of sulfur hexafluoride inflatable-type current transformer in prior art can be improved, improve the quality of product, add a series of equipment from device on this basis, it is ensured that sulfur hexafluoride inflatable-type current transformer properly functioning。
Summary of the invention
In order to solve the technical problem that prior art exists, the invention provides a kind of current transformer real time on-line monitoring device, optimize the framework of sulfur hexafluoride inflatable-type current transformer in prior art, add the various running parameter appliance arrangements including the first Pressure gauge, the second Pressure gauge, sulfur hexafluoride infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor, to report to the police in time when occurring abnormal, thus avoiding field apparatus to be damaged, ensure the personal safety of Field Force。
According to an aspect of the present invention, provide a kind of current transformer real time on-line monitoring device, described monitoring device includes sulfur hexafluoride inflatable-type current transformer main body, sulfur hexafluoride infrared sensor and digital signal processor, described sulfur hexafluoride infrared sensor is for carrying out sampling analysis to the sulfur hexafluoride gas in sulfur hexafluoride inflatable-type current transformer main body, described digital signal processor is connected with described sulfur hexafluoride infrared sensor, determines whether, for the sampling analysis result based on described sulfur hexafluoride infrared sensor, operation of reporting to the police accordingly。
More specifically, in described current transformer real time on-line monitoring device, including sulfur hexafluoride inflatable-type current transformer main body, including base, secondary terminal box, secondary lead wires sleeve pipe, iron core, transformer casing, once go between sleeve pipe, burst disk, compound insulating sleeve and silastic-layer；Compound insulating sleeve is positioned at above base, for cylindrical structural；Transformer casing is arranged on above compound insulating sleeve, for cylindrical structural and twice that cross sectional radius is compound insulating sleeve cross sectional radius；Burst disk is arranged on the top of transformer casing；Silastic-layer is wrapped in the outside of compound insulating sleeve；Secondary terminal box is positioned at the side of base, is used for accessing secondary lead wires；Secondary lead wires sleeve pipe is positioned at the inside of compound insulating sleeve, is connected with secondary terminal box, for being linked on iron core by the secondary lead wires of secondary terminal box to form Secondary Winding；Once lead-in wire sleeve pipe lateral direction penetrating is in the central authorities of transformer casing, once goes between for accessing, and will once go between and be linked on iron core to form a winding；Compound insulating sleeve is glass fibre and resin-bonded is fabricated by；Silastic-layer adopts silicon rubber umbrella skirt structure, combines closely with described compound insulating sleeve；Transformer device mouth, is arranged on the side of transformer casing, as the device port of gas in transformer；Interface conversion threeway, is connected with described transformer device mouth；First hand-operated valve, is connected with described interface conversion threeway；Threeway, is connected with described first hand-operated valve, is also connected respectively with the first switch electromagnetic valve and the second hand-operated valve；First switch electromagnetic valve, is connected with pressure maintaining valve；Pressure maintaining valve, is connected with sulfur hexafluoride infrared sensor, and it is also provided with the first Pressure gauge；Sulfur hexafluoride infrared sensor, measures air chamber with sulfur dioxide and is connected, and is also embedded with sulfur dioxide electrochemical sensor in the gas chamber shell of sulfur dioxide measurement air chamber, and sulfur hexafluoride infrared sensor is for measuring the sulfur hexafluoride purity of gas indoor gas；Sulfur dioxide measures air chamber, including air chamber base, gas chamber shell and sealing ring；Sulfur dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas；4th hand-operated valve, measures air chamber with sulfur dioxide and is connected；Environment temperature sensor, for the real time temperature of real-time clock transformer surrounding；Second switch electromagnetic valve, measures air chamber with sulfur dioxide and is connected；Force (forcing) pump, is connected with second switch electromagnetic valve；Four-way, is connected respectively with force (forcing) pump, the 3rd hand-operated valve, the second Pressure gauge and pressure-regulating valve；3rd hand-operated valve, is connected with four-way；Second Pressure gauge, is connected with four-way；Pressure-regulating valve, is connected respectively with four-way and the second hand-operated valve；Traffic filter, it is connected respectively with the first Pressure gauge, the second Pressure gauge, sulfur hexafluoride infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor, for being filtered respectively processing to the first force value of the first Pressure gauge output, the second force value of the second Pressure gauge output, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature；Signal amplifier, is connected with traffic filter, for filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature are amplified respectively；8 analog-digital converters, it is connected with signal amplifier, for the first force value after amplifying, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature are carried out analog digital conversion respectively to obtain digitized the first force value, digitized the second force value, digitized sulfur hexafluoride purity, digitized content of sulfur dioxide and digitized real time temperature；FLASH memory, is used for prestoring pressure threshold scope, sulfur hexafluoride purity threshold range, content of sulfur dioxide threshold range and real time temperature threshold range；Digital signal processor, connected by 8 bit input and output interfaces and 8 analog-digital converters, to receive digitized the first force value, digitized the second force value, digitized sulfur hexafluoride purity, digitized content of sulfur dioxide and digitized real time temperature, also it is connected with FLASH memory, to send the first Pressure Alarm when digitized the first force value is beyond pressure threshold scope, the second Pressure Alarm is sent when digitized the second force value is beyond pressure threshold scope, sulfur hexafluoride purity alarm signal is sent when digitized sulfur hexafluoride purity is beyond sulfur hexafluoride purity threshold range, content of sulfur dioxide alarm signal is sent when digitized content of sulfur dioxide is beyond content of sulfur dioxide threshold range, ambient temperature alarm signal is sent when digitized real time temperature is beyond real time temperature threshold range；Audible-visual annunciator, is connected with digital signal processor, for sending the acousto-optic warning signal corresponding with the first Pressure Alarm, the second Pressure Alarm, sulfur hexafluoride purity alarm signal, content of sulfur dioxide alarm signal or ambient temperature alarm signal。
More specifically, in described current transformer real time on-line monitoring device: filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature are amplified in the numerical range that 8 analog-digital converters can process by signal amplifier respectively。
More specifically, in described current transformer real time on-line monitoring device: digital signal processor is the dsp chip of TI company。
More specifically, in described current transformer real time on-line monitoring device: audible-visual annunciator includes two-way speaker and LED array alarm lamp。
More specifically, in described current transformer real time on-line monitoring device: traffic filter and signal amplifier are integrated on one piece of surface-mounted integrated circuit。
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the block diagram of the current transformer real time on-line monitoring device of the present invention。
Fig. 2 is the block diagram of the audible-visual annunciator of the current transformer real time on-line monitoring device of the present invention。
Accompanying drawing labelling: 1 sulfur hexafluoride inflatable-type current transformer main body；2 sulfur hexafluoride infrared sensors；3 digital signal processors；4 two-way speakers；5LED array alarm lamp
Detailed description of the invention
Below with reference to accompanying drawings the embodiment of the current transformer real time on-line monitoring device of the present invention is described in detail。
Transformer operation principle is as follows: in the circuit of power consumption, and electric current differs from several peaces to several Wan An, and voltage phase difference is from several volts to millions of volts。In circuit, current/voltage is all higher, is breakneck as directly measured。Need to be converted to, for ease of secondary meter measurement, the current/voltage that comparison is unified, use transformer to play the effect of variable flow and variable pressure and electrical isolation。Display instrument major part is the current voltmeter of pointer-type, so the secondary current great majority of current transformer are ampere level (such as 5 etc.)。Along with era development, electrical measurement has reached digitized mostly, and the signal of the sampling of computer is generally milliampere level (0-5V, 4-20mA etc.)。Micro-transformer of current secondary current is milliampere level, acts primarily as the function served as bridge between big transformer and sampling。Micro-transformer of current is referred to as " instrument current transformer "。
Current gas-filled type current transformer structure is not reasonable, cause that product redundancy is too high, qualification rate is not high, lack own device mechanism simultaneously, additionally increase interface and corresponding appliance arrangement is needed to be operated, make device process complicated, and the security performance of current gas-filled type current transformer cannot meet field demand。
For this, the present invention has built a kind of current transformer real time on-line monitoring device, transform the structure of existing gas-filled type current transformer, improve the performance of gas-filled type current transformer, and it is integrated with oneself's appliance arrangement at gas-filled type current transformer self, realize automatic alarm during on-site parameters exception, the powerful guarantee safety of field apparatus and personnel。
Fig. 1 is the block diagram of the current transformer real time on-line monitoring device of the present invention, described monitoring device includes sulfur hexafluoride inflatable-type current transformer main body, sulfur hexafluoride infrared sensor and digital signal processor, described sulfur hexafluoride infrared sensor is for carrying out sampling analysis to the sulfur hexafluoride gas in sulfur hexafluoride inflatable-type current transformer main body, described digital signal processor is connected with described sulfur hexafluoride infrared sensor, determines whether, for the sampling analysis result based on described sulfur hexafluoride infrared sensor, operation of reporting to the police accordingly。
Then, the current transformer real time on-line monitoring device of the present invention is specifically described。
Described monitoring device includes: sulfur hexafluoride inflatable-type current transformer main body, including base, secondary terminal box, secondary lead wires sleeve pipe, iron core, transformer casing, once goes between sleeve pipe, burst disk, compound insulating sleeve and silastic-layer；Compound insulating sleeve is positioned at above base, for cylindrical structural；Transformer casing is arranged on above compound insulating sleeve, for cylindrical structural and twice that cross sectional radius is compound insulating sleeve cross sectional radius；Burst disk is arranged on the top of transformer casing；Silastic-layer is wrapped in the outside of compound insulating sleeve；Secondary terminal box is positioned at the side of base, is used for accessing secondary lead wires；Secondary lead wires sleeve pipe is positioned at the inside of compound insulating sleeve, is connected with secondary terminal box, for being linked on iron core by the secondary lead wires of secondary terminal box to form Secondary Winding；Once lead-in wire sleeve pipe lateral direction penetrating is in the central authorities of transformer casing, once goes between for accessing, and will once go between and be linked on iron core to form a winding；Compound insulating sleeve is glass fibre and resin-bonded is fabricated by；Silastic-layer adopts silicon rubber umbrella skirt structure, combines closely with described compound insulating sleeve。
Described monitoring device includes: transformer device mouth, is arranged on the side of transformer casing, as the device port of gas in transformer；Interface conversion threeway, is connected with described transformer device mouth；First hand-operated valve, is connected with described interface conversion threeway；Threeway, is connected with described first hand-operated valve, is also connected respectively with the first switch electromagnetic valve and the second hand-operated valve；First switch electromagnetic valve, is connected with pressure maintaining valve；Pressure maintaining valve, is connected with sulfur hexafluoride infrared sensor, and it is also provided with the first Pressure gauge。
Described monitoring device includes: sulfur hexafluoride infrared sensor, measure air chamber with sulfur dioxide to be connected, also being embedded with sulfur dioxide electrochemical sensor in the gas chamber shell of sulfur dioxide measurement air chamber, sulfur hexafluoride infrared sensor is for measuring the sulfur hexafluoride purity of gas indoor gas；Sulfur dioxide measures air chamber, including air chamber base, gas chamber shell and sealing ring；Sulfur dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas；4th hand-operated valve, measures air chamber with sulfur dioxide and is connected；Environment temperature sensor, for the real time temperature of real-time clock transformer surrounding；Second switch electromagnetic valve, measures air chamber with sulfur dioxide and is connected。
Described monitoring device includes: force (forcing) pump, is connected with second switch electromagnetic valve；Four-way, is connected respectively with force (forcing) pump, the 3rd hand-operated valve, the second Pressure gauge and pressure-regulating valve；3rd hand-operated valve, is connected with four-way；Second Pressure gauge, is connected with four-way；Pressure-regulating valve, is connected respectively with four-way and the second hand-operated valve；Traffic filter, it is connected respectively with the first Pressure gauge, the second Pressure gauge, sulfur hexafluoride infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor, for being filtered respectively processing to the first force value of the first Pressure gauge output, the second force value of the second Pressure gauge output, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature。
Described monitoring device includes: signal amplifier, is connected with traffic filter, for filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature are amplified respectively；8 analog-digital converters, it is connected with signal amplifier, for the first force value after amplifying, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature are carried out analog digital conversion respectively to obtain digitized the first force value, digitized the second force value, digitized sulfur hexafluoride purity, digitized content of sulfur dioxide and digitized real time temperature。
Described monitoring device includes: FLASH memory, is used for prestoring pressure threshold scope, sulfur hexafluoride purity threshold range, content of sulfur dioxide threshold range and real time temperature threshold range；Digital signal processor, connected by 8 bit input and output interfaces and 8 analog-digital converters, to receive digitized the first force value, digitized the second force value, digitized sulfur hexafluoride purity, digitized content of sulfur dioxide and digitized real time temperature, also it is connected with FLASH memory, to send the first Pressure Alarm when digitized the first force value is beyond pressure threshold scope, the second Pressure Alarm is sent when digitized the second force value is beyond pressure threshold scope, sulfur hexafluoride purity alarm signal is sent when digitized sulfur hexafluoride purity is beyond sulfur hexafluoride purity threshold range, content of sulfur dioxide alarm signal is sent when digitized content of sulfur dioxide is beyond content of sulfur dioxide threshold range, ambient temperature alarm signal is sent when digitized real time temperature is beyond real time temperature threshold range。
As shown in Figure 2, described monitoring device includes: audible-visual annunciator, it is connected with digital signal processor, for sending the acousto-optic warning signal corresponding with the first Pressure Alarm, the second Pressure Alarm, sulfur hexafluoride purity alarm signal, content of sulfur dioxide alarm signal or ambient temperature alarm signal, described audible-visual annunciator includes two-way speaker and LED array alarm lamp。
Alternatively, in described monitoring device: filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature can be amplified in the numerical range that 8 analog-digital converters can process by signal amplifier respectively；Digital signal processor is chosen as the dsp chip of TI company；And traffic filter and signal amplifier can be incorporated on one piece of surface-mounted integrated circuit。
It addition, transformer came across for 19 end of the centurys the earliest。Development along with power industry, electric pressure and the accurate rank of transformer all improve a lot, there have been developed a lot of extraordinary transformer, such as voltage, electric current combined type transformer, DC current transformer, the current ratio device of high accuracy and voltage ratio device, big electric current laser type current transformer, electronic circuit compensates transformer, photo-electricity mutual-inductor in extra-high pressure system, and voltage in SF6 fully closed combined electric unit (GIS), current transformer。In power industry, the power system of what electric pressure and scale to be developed, it is necessary to the transformer of development relevant voltage grade and accuracy, for the needs of power system measuring, protection and control。
It addition, wave filter, as the term suggests, it is the device that ripple is filtered。" ripple " is a physical concept widely, and at electronic technology field, " ripple " is narrowly confined to refer in particular to the process of the value fluctuations in time describing various physical quantitys。The effect by various kinds of sensors of this process, is converted into the time function of voltage or electric current, is referred to as the time waveform of various physical quantity, or is referred to as signal。Because the independent variable time is continuous value, it is referred to as continuous time signal, is referred to as again analogue signal habitually。
Along with the generation of digital electronic computer technology with develop rapidly, for the ease of computer, signal is processed, create under sampling theorem instructs, continuous time signal is transformed into discrete-time signal complete theory and method。That is, only can express primary signal by original analog signal sample value on series of discrete time coordinate point and not lose any information, since what these concepts of ripple, waveform, signal were expressed is the change of various physical quantitys in objective world, it is exactly the carrier of the various information that modern society depends on for existence naturally。Information needs to propagate, and what lean on is exactly the transmission of waveshape signal。Signal its generation, conversion, transmission each link be likely to be due to the existence of environment and interference and distort, or even in quite a number of cases, this distortion is also very serious, causes that signal and entrained information thereof are embedded in the middle of noise dearly。In order to filter these noises, recover signal originally, it is necessary to use various wave filter to be filtered processing。
Adopt the current transformer real time on-line monitoring device of the present invention, for the technical problem that sulfur hexafluoride inflatable-type current transformer unreasonable structure in prior art and security performance are poor, by optimizing the internal structure of sulfur hexafluoride inflatable-type current transformer, integrated a series of from appliance arrangement, above-mentioned technical problem is overcome, thus improve stability and the reliability of sulfur hexafluoride inflatable-type current transformer。
Although it is understood that the present invention discloses as above with preferred embodiment, but above-described embodiment is not limited to the present invention。For any those of ordinary skill in the art, without departing under technical solution of the present invention ambit, all may utilize the technology contents of the disclosure above and technical solution of the present invention is made many possible variations and modification, or be revised as the Equivalent embodiments of equivalent variations。Therefore, every content without departing from technical solution of the present invention, the technical spirit of the foundation present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still falls within the scope of technical solution of the present invention protection。
Claims (2)
1. a current transformer real time on-line monitoring device, described monitoring device includes sulfur hexafluoride inflatable-type current transformer main body, sulfur hexafluoride infrared sensor and digital signal processor, described sulfur hexafluoride infrared sensor is for carrying out sampling analysis to the sulfur hexafluoride gas in sulfur hexafluoride inflatable-type current transformer main body, described digital signal processor is connected with described sulfur hexafluoride infrared sensor, determines whether, for the sampling analysis result based on described sulfur hexafluoride infrared sensor, operation of reporting to the police accordingly。
2. current transformer real time on-line monitoring device as claimed in claim 1, it is characterised in that described monitoring device includes:
Sulfur hexafluoride inflatable-type current transformer main body, including base, secondary terminal box, secondary lead wires sleeve pipe, iron core, transformer casing, once goes between sleeve pipe, burst disk, compound insulating sleeve and silastic-layer；
Compound insulating sleeve is positioned at above base, for cylindrical structural；
Transformer casing is arranged on above compound insulating sleeve, for cylindrical structural and twice that cross sectional radius is compound insulating sleeve cross sectional radius；
Burst disk is arranged on the top of transformer casing；
Silastic-layer is wrapped in the outside of compound insulating sleeve；
Secondary terminal box is positioned at the side of base, is used for accessing secondary lead wires；
Secondary lead wires sleeve pipe is positioned at the inside of compound insulating sleeve, is connected with secondary terminal box, for being linked on iron core by the secondary lead wires of secondary terminal box to form Secondary Winding；
Once lead-in wire sleeve pipe lateral direction penetrating is in the central authorities of transformer casing, once goes between for accessing, and will once go between and be linked on iron core to form a winding；
Compound insulating sleeve is glass fibre and resin-bonded is fabricated by；
Silastic-layer adopts silicon rubber umbrella skirt structure, combines closely with described compound insulating sleeve；
Transformer device mouth, is arranged on the side of transformer casing, as the device port of gas in transformer；
Interface conversion threeway, is connected with described transformer device mouth；
First hand-operated valve, is connected with described interface conversion threeway；
Threeway, is connected with described first hand-operated valve, is also connected respectively with the first switch electromagnetic valve and the second hand-operated valve；
First switch electromagnetic valve, is connected with pressure maintaining valve；
Pressure maintaining valve, is connected with sulfur hexafluoride infrared sensor, and it is also provided with the first Pressure gauge；
Sulfur hexafluoride infrared sensor, measures air chamber with sulfur dioxide and is connected, and is also embedded with sulfur dioxide electrochemical sensor in the gas chamber shell of sulfur dioxide measurement air chamber, and sulfur hexafluoride infrared sensor is for measuring the sulfur hexafluoride purity of gas indoor gas；
Sulfur dioxide measures air chamber, including air chamber base, gas chamber shell and sealing ring；
Sulfur dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas；
4th hand-operated valve, measures air chamber with sulfur dioxide and is connected；
Environment temperature sensor, for the real time temperature of real-time clock transformer surrounding；
Second switch electromagnetic valve, measures air chamber with sulfur dioxide and is connected；
Force (forcing) pump, is connected with second switch electromagnetic valve；
Four-way, is connected respectively with force (forcing) pump, the 3rd hand-operated valve, the second Pressure gauge and pressure-regulating valve；
3rd hand-operated valve, is connected with four-way；
Second Pressure gauge, is connected with four-way；
Pressure-regulating valve, is connected respectively with four-way and the second hand-operated valve；
Traffic filter, it is connected respectively with the first Pressure gauge, the second Pressure gauge, sulfur hexafluoride infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor, for being filtered respectively processing to the first force value of the first Pressure gauge output, the second force value of the second Pressure gauge output, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature；
Signal amplifier, is connected with traffic filter, for filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature are amplified respectively；
8 analog-digital converters, it is connected with signal amplifier, for the first force value after amplifying, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature are carried out analog digital conversion respectively to obtain digitized the first force value, digitized the second force value, digitized sulfur hexafluoride purity, digitized content of sulfur dioxide and digitized real time temperature；
FLASH memory, is used for prestoring pressure threshold scope, sulfur hexafluoride purity threshold range, content of sulfur dioxide threshold range and real time temperature threshold range；
Digital signal processor, connected by 8 bit input and output interfaces and 8 analog-digital converters, to receive digitized the first force value, digitized the second force value, digitized sulfur hexafluoride purity, digitized content of sulfur dioxide and digitized real time temperature, also it is connected with FLASH memory, to send the first Pressure Alarm when digitized the first force value is beyond pressure threshold scope, the second Pressure Alarm is sent when digitized the second force value is beyond pressure threshold scope, sulfur hexafluoride purity alarm signal is sent when digitized sulfur hexafluoride purity is beyond sulfur hexafluoride purity threshold range, content of sulfur dioxide alarm signal is sent when digitized content of sulfur dioxide is beyond content of sulfur dioxide threshold range, ambient temperature alarm signal is sent when digitized real time temperature is beyond real time temperature threshold range；
Audible-visual annunciator, is connected with digital signal processor, for sending the acousto-optic warning signal corresponding with the first Pressure Alarm, the second Pressure Alarm, sulfur hexafluoride purity alarm signal, content of sulfur dioxide alarm signal or ambient temperature alarm signal；
Audible-visual annunciator includes two-way speaker and LED array alarm lamp；
Traffic filter and signal amplifier are integrated on one piece of surface-mounted integrated circuit。
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| CN201610114379.8A CN105698860A (en) | 2015-11-16 | 2015-11-16 | Current transformer real-time on-line monitoring device |
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| CN201510784174.6A CN105300455B (en) | 2015-11-16 | 2015-11-16 | Current transformer real time on-line monitoring device |
| CN201610114379.8A CN105698860A (en) | 2015-11-16 | 2015-11-16 | Current transformer real-time on-line monitoring device |
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| CN115541973A (en) * | 2022-12-01 | 2022-12-30 | 威胜集团有限公司 | Method and device for monitoring signal redundancy of high-voltage bus of transformer substation |
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| CN115541973A (en) * | 2022-12-01 | 2022-12-30 | 威胜集团有限公司 | Method and device for monitoring signal redundancy of high-voltage bus of transformer substation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105300455B (en) | 2016-08-31 |
| CN105300455A (en) | 2016-02-03 |
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