CN105445690A - Using method of current transformer real-time on-line monitoring device - Google Patents
Using method of current transformer real-time on-line monitoring device Download PDFInfo
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- CN105445690A CN105445690A CN201510785820.0A CN201510785820A CN105445690A CN 105445690 A CN105445690 A CN 105445690A CN 201510785820 A CN201510785820 A CN 201510785820A CN 105445690 A CN105445690 A CN 105445690A
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- sulfur hexafluoride
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Abstract
The invention relates to a current transformer real-time on-line monitoring device. The monitoring device includes a sulfur hexafluoride inflatable current transformer main body, a sulfur hexafluoride infrared sensor, and a digital signal processor, the sulfur hexafluoride infrared sensor performs sampling analysis of the sulfur hexafluoride gas in the sulfur hexafluoride inflatable current transformer main body, the digital signal processor is connected with the sulfur hexafluoride infrared sensor, and corresponding alarm operations are determined based on the sampling analysis result of the sulfur hexafluoride infrared sensor. According to the invention, the sulfur hexafluoride gas taking the insulation effect in the sulfur hexafluoride inflatable current transformer main body can be monitored in real time, and unnecessary accidents can be prevented.
Description
Technical field
The present invention relates to power domain, particularly relate to a kind of using method of current transformer real time on-line monitoring device.
Background technology
Mutual inductor (instrumenttransformer) is also called instrument transformer, is the general designation of current transformer and voltage transformer (VT).High voltage can be become low-voltage, big current becomes small area analysis, for measuring or protection system.High voltage or big current scaling transformation are mainly become normal low voltage (100V) or standard small area analysis (5A or 1A by its function; all refer to ratings), to realize standardization, the miniaturization of measurement instrument, proterctive equipment and automatic control equipment.Mutual inductor also can be used to separate high-voltage system simultaneously, to ensure the safety of the person and equipment.
Current transformer, it utilizes the proportional feature of transformer primary, secondary current to make.Its principle of work, equivalent circuit are also identical with general transformer, and just its former limit windings in series is in circuit-under-test, and the number of turn is little; Vice-side winding connects the low-impedance load such as reometer, relay current coil, near short circuit.Primary current (i.e. tested electric current) and secondary current depend on the load of test line, and have nothing to do with the secondary load of current transformer.Because secondary is close to short circuit, so former and deputy polygonal voltage U1 and all very little, exciting current I0 is also very little.When current transformer runs, secondary does not allow open circuit.Because once open circuit, primary current all becomes exciting current, makes magnetic flux and secondary voltage substantially exceed normal value and jeopardize the person and device security.Therefore, mustn't fuse be connect in current transformer secondary loop, also not allow operationally just to pull down the equipment such as reometer, relay without bypass.The mode of connection of current transformer by its connect load service requirement determine.The most frequently used mode of connection is single-phase, three-phase star and incomplete star.
Sulfur hexafluoride inflatable-type current transformer is type the most common in gas-filled type current transformer, but, there is unreasonable structure, defect that qualification rate is lower 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, cause the of low quality of sulfur hexafluoride inflatable-type current transformer of the prior art, security is poor.
In order to overcome above-mentioned defect, 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, ensure the normal operation of sulfur hexafluoride inflatable-type current transformer.
Summary of the invention
In order to solve the technical matters 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 comprising the first tensimeter, the second tensimeter, sulfur hexafluoride infrared sensor, sulphuric dioxide electrochemical sensor and environment temperature sensor, to report to the police in time when occurring abnormal, thus avoid field apparatus to be damaged, ensure the personal safety of field staff.
According to an aspect of the present invention, provide a kind of current transformer real time on-line monitoring device, described monitoring device comprises sulfur hexafluoride inflatable-type current transformer main body, sulfur hexafluoride infrared sensor and digital signal processor, described sulfur hexafluoride infrared sensor is used 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, for determining whether to carry out corresponding alarm operation based on the sampling analysis result of described sulfur hexafluoride infrared sensor.
More specifically, in described current transformer real time on-line monitoring device, comprise: sulfur hexafluoride inflatable-type current transformer main body, comprise base, secondary terminal box, secondary lead wires sleeve pipe, iron core, transformer casing, once to go between sleeve pipe, burst disk, compound insulating sleeve and silastic-layer, compound insulating sleeve is positioned at above base, is cylindrical structural, transformer casing is arranged on above compound insulating sleeve, for cylindrical structural and cross sectional radius is the twice of 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, 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 the secondary lead wires of secondary terminal box being linked on iron core to form Secondary Winding, once go between the sleeve pipe lateral direction penetrating central authorities at transformer casing, once goes between for access, and once will go between and be linked on iron core to form a winding, compound insulating sleeve is that glass fibre and resin-bonded manufacture form, 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 mutual inductor, interface conversion threeway, is connected with described transformer device mouth, first hand valve, is connected with described interface conversion threeway, threeway, is connected with described first hand valve, is also connected respectively with the first switch electromagnetic valve and the second hand 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 tensimeter, sulfur hexafluoride infrared sensor, measures air chamber with sulphuric dioxide and is connected, and be also embedded with sulphuric dioxide electrochemical sensor in the gas chamber shell of sulphuric dioxide measurement air chamber, sulfur hexafluoride infrared sensor is for measuring the sulfur hexafluoride purity of gas indoor gas, sulphuric dioxide measures air chamber, comprises air chamber base, gas chamber shell and O-ring seal, sulphuric dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas, 4th hand valve, measures air chamber with sulphuric dioxide and is connected, environment temperature sensor, for the real time temperature of real-time clock mutual inductor surrounding environment, second switch solenoid valve, measures air chamber with sulphuric dioxide and is connected, force (forcing) pump, is connected with second switch solenoid valve, four-way, is connected respectively with force (forcing) pump, the 3rd hand valve, the second tensimeter and pressure-regulating valve, 3rd hand valve, is connected with four-way, second tensimeter, is connected with four-way, pressure-regulating valve, is connected respectively with four-way and the second hand valve, traffic filter, be connected respectively with the first tensimeter, the second tensimeter, sulfur hexafluoride infrared sensor, sulphuric dioxide electrochemical sensor and environment temperature sensor, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and the real time temperature that export for the first force value to the first tensimeter output, the second tensimeter carry out filtering process respectively, signal amplifier, is connected with traffic filter, for amplifying respectively filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature, 8 analog to digital converters, be connected with signal amplifier, for carrying out analog to digital conversion respectively to obtain digitizing first force value, digitizing second force value, digitizing sulfur hexafluoride purity, digitizing content of sulfur dioxide and digitizing real time temperature to the first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and the real time temperature after amplification, FLASH memory, 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, be connected with 8 analog to digital converters by 8 bit input and output interfaces, to receive digitizing first force value, digitizing second force value, digitizing sulfur hexafluoride purity, digitizing content of sulfur dioxide and digitizing real time temperature, also be connected with FLASH memory, to send the first Pressure Alarm when digitizing first force value exceeds pressure threshold scope, the second Pressure Alarm is sent when digitizing second force value exceeds pressure threshold scope, sulfur hexafluoride purity alerting signal is sent when digitizing sulfur hexafluoride purity exceeds sulfur hexafluoride purity threshold range, content of sulfur dioxide alerting signal is sent when digitizing content of sulfur dioxide exceeds content of sulfur dioxide threshold range, environment temperature alerting signal is sent when digitizing real time temperature exceeds 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 alerting signal, content of sulfur dioxide alerting signal or environment temperature alerting 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 to 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 comprises 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 current transformer real time on-line monitoring device of the present invention.
Fig. 2 is the block diagram of the audible-visual annunciator of current transformer real time on-line monitoring device of the present invention.
Reference numeral: 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
Embodiment
Below with reference to accompanying drawings the embodiment of current transformer real time on-line monitoring device of the present invention is described in detail.
Mutual inductor principle of work is as follows: in the circuit of power consumption, and electric current difference is from a few peace to a little Wan An, and voltage phase difference is from a few volt to millions of volt.In circuit, current/voltage is all higher, is breakneck as directly measured.Measure for ease of secondary instrument and need to be converted to more unified current/voltage, use mutual inductor to play the effect of variable flow and variable pressure and electrical isolation.Displaying Meter major part is the current voltmeter of pointer-type, so the secondary current great majority of current transformer are ampere level (as 5 etc.).Along with era development, electrical measurement reaches digitizing mostly, and the signal of the sampling of computing machine is generally milliampere level (0-5V, 4-20mA etc.).Micro-transformer of current secondary current is milliampere level, the main function served as bridge risen between large mutual inductor and sampling.Micro-transformer of current is referred to as " instrument current transformer ".
Current gas-filled type current transformer structure is reasonable not, cause product redundance too high, qualification rate is not high, lack own device mechanism simultaneously, increase interface and corresponding appliance arrangement is in addition needed to operate, make device process complicated, and the security performance of current gas-filled type current transformer cannot meet field demand.
For this reason, 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 be integrated with self-appliance arrangement at gas-filled type current transformer self, realize on-site parameters abnormal time automatic alarm, the powerful guarantee safety of field apparatus and personnel.
Fig. 1 is the block diagram of current transformer real time on-line monitoring device of the present invention, described monitoring device comprises sulfur hexafluoride inflatable-type current transformer main body, sulfur hexafluoride infrared sensor and digital signal processor, described sulfur hexafluoride infrared sensor is used 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, for determining whether to carry out corresponding alarm operation based on the sampling analysis result of described sulfur hexafluoride infrared sensor.
Then, current transformer real time on-line monitoring device of the present invention is specifically described.
Described monitoring device comprises: sulfur hexafluoride inflatable-type current transformer main body, comprises base, secondary terminal box, secondary lead wires sleeve pipe, iron core, transformer casing, once to go between sleeve pipe, burst disk, compound insulating sleeve and silastic-layer; Compound insulating sleeve is positioned at above base, is cylindrical structural; Transformer casing is arranged on above compound insulating sleeve, for cylindrical structural and cross sectional radius is the twice of 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, 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 the secondary lead wires of secondary terminal box being linked on iron core to form Secondary Winding; Once go between the sleeve pipe lateral direction penetrating central authorities at transformer casing, once goes between for access, and once will go between and be linked on iron core to form a winding; Compound insulating sleeve is that glass fibre and resin-bonded manufacture form; Silastic-layer adopts silicon rubber umbrella skirt structure, combines closely with described compound insulating sleeve.
Described monitoring device comprises: transformer device mouth, is arranged on the side of transformer casing, as the device port of gas in mutual inductor; Interface conversion threeway, is connected with described transformer device mouth; First hand valve, is connected with described interface conversion threeway; Threeway, is connected with described first hand valve, is also connected respectively with the first switch electromagnetic valve and the second hand 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 tensimeter.
Described monitoring device comprises: sulfur hexafluoride infrared sensor, measure air chamber with sulphuric dioxide to be connected, also be embedded with sulphuric dioxide electrochemical sensor in the gas chamber shell of sulphuric dioxide measurement air chamber, sulfur hexafluoride infrared sensor is for measuring the sulfur hexafluoride purity of gas indoor gas; Sulphuric dioxide measures air chamber, comprises air chamber base, gas chamber shell and O-ring seal; Sulphuric dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas; 4th hand valve, measures air chamber with sulphuric dioxide and is connected; Environment temperature sensor, for the real time temperature of real-time clock mutual inductor surrounding environment; Second switch solenoid valve, measures air chamber with sulphuric dioxide and is connected.
Described monitoring device comprises: force (forcing) pump, is connected with second switch solenoid valve; Four-way, is connected respectively with force (forcing) pump, the 3rd hand valve, the second tensimeter and pressure-regulating valve; 3rd hand valve, is connected with four-way; Second tensimeter, is connected with four-way; Pressure-regulating valve, is connected respectively with four-way and the second hand valve; Traffic filter, be connected respectively with the first tensimeter, the second tensimeter, sulfur hexafluoride infrared sensor, sulphuric dioxide electrochemical sensor and environment temperature sensor, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and the real time temperature that export for the first force value to the first tensimeter output, the second tensimeter carry out filtering process respectively.
Described monitoring device comprises: signal amplifier, is connected with traffic filter, for amplifying respectively filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature; 8 analog to digital converters, be connected with signal amplifier, for carrying out analog to digital conversion respectively to obtain digitizing first force value, digitizing second force value, digitizing sulfur hexafluoride purity, digitizing content of sulfur dioxide and digitizing real time temperature to the first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and the real time temperature after amplification.
Described monitoring device comprises: FLASH memory, 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, be connected with 8 analog to digital converters by 8 bit input and output interfaces, to receive digitizing first force value, digitizing second force value, digitizing sulfur hexafluoride purity, digitizing content of sulfur dioxide and digitizing real time temperature, also be connected with FLASH memory, to send the first Pressure Alarm when digitizing first force value exceeds pressure threshold scope, the second Pressure Alarm is sent when digitizing second force value exceeds pressure threshold scope, sulfur hexafluoride purity alerting signal is sent when digitizing sulfur hexafluoride purity exceeds sulfur hexafluoride purity threshold range, content of sulfur dioxide alerting signal is sent when digitizing content of sulfur dioxide exceeds content of sulfur dioxide threshold range, environment temperature alerting signal is sent when digitizing real time temperature exceeds real time temperature threshold range.
As shown in Figure 2, described monitoring device comprises: audible-visual annunciator, be 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 alerting signal, content of sulfur dioxide alerting signal or environment temperature alerting signal, described audible-visual annunciator comprises 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 to 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 integrated on one piece of surface-mounted integrated circuit.
In addition, mutual inductor came across for 19 end of the centurys the earliest.Along with the development of power industry, electric pressure and the accurate rank of mutual inductor all improve a lot, there have been developed a lot of extraordinary mutual inductor, as voltage, electric current combined type mutual inductor, DC current transformer, the current ratio device of pin-point accuracy and voltage ratio device, big current laser type current transformer, electronic circuit compensates mutual inductor, photo-electricity mutual-inductor in extra-high pressure system, and voltage, the current transformer in SF6 fully closed combined electric unit (GIS).In power industry, the electric system of what electric pressure and scale be developed, the mutual inductor of relevant voltage grade and accuracy must be developed, for the needs of power system measuring, protection and control.
In addition, wave filter, as the term suggests, be 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 quantity.This process, by the effect of various kinds of sensors, is converted into the function of time 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, be referred to as continuous time signal, be referred to as simulating signal habitually again.
Along with generation and the develop rapidly of digital electronic computer technology, for the ease of computing machine, signal is processed, create complete Theories and methods continuous time signal being transformed into discrete-time signal under sampling theorem instructs.That is, can only express original signal by the sample value of original analog signal 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 quantity in objective world, 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 waveform signal.Signal it generation, conversion, transmission each link may distort due to the existence of environment and interference, or even in quite a number of cases, this distortion is also very serious, causes signal and entrained information thereof to be embedded in the middle of noise dearly.In order to these noises of filtering, recover signal originally, need to use various wave filter to carry out filtering process.
Adopt current transformer real time on-line monitoring device of the present invention, for sulfur hexafluoride inflatable-type current transformer unreasonable structure in prior art and the poor technical matters of security performance, by optimizing the inner structure of sulfur hexafluoride inflatable-type current transformer, integratedly a series ofly from appliance arrangement, above-mentioned technical matters to be overcome, thus improve stability and the reliability of sulfur hexafluoride inflatable-type current transformer.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (6)
1. a using method for current transformer real time on-line monitoring device, the method comprises:
1) a kind of current transformer real time on-line monitoring device is provided, described monitoring device comprises sulfur hexafluoride inflatable-type current transformer main body, sulfur hexafluoride infrared sensor and digital signal processor, described sulfur hexafluoride infrared sensor is used 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, for determining whether to carry out corresponding alarm operation based on the sampling analysis result of described sulfur hexafluoride infrared sensor;
2) described monitoring device is used.
2. the method for claim 1, is characterized in that, described monitoring device comprises:
Sulfur hexafluoride inflatable-type current transformer main body, comprises base, secondary terminal box, secondary lead wires sleeve pipe, iron core, transformer casing, once to go between sleeve pipe, burst disk, compound insulating sleeve and silastic-layer;
Compound insulating sleeve is positioned at above base, is cylindrical structural;
Transformer casing is arranged on above compound insulating sleeve, for cylindrical structural and cross sectional radius is the twice of 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, 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 the secondary lead wires of secondary terminal box being linked on iron core to form Secondary Winding;
Once go between the sleeve pipe lateral direction penetrating central authorities at transformer casing, once goes between for access, and once will go between and be linked on iron core to form a winding;
Compound insulating sleeve is that glass fibre and resin-bonded manufacture form;
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 mutual inductor;
Interface conversion threeway, is connected with described transformer device mouth;
First hand valve, is connected with described interface conversion threeway;
Threeway, is connected with described first hand valve, is also connected respectively with the first switch electromagnetic valve and the second hand 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 tensimeter;
Sulfur hexafluoride infrared sensor, measures air chamber with sulphuric dioxide and is connected, and be also embedded with sulphuric dioxide electrochemical sensor in the gas chamber shell of sulphuric dioxide measurement air chamber, sulfur hexafluoride infrared sensor is for measuring the sulfur hexafluoride purity of gas indoor gas;
Sulphuric dioxide measures air chamber, comprises air chamber base, gas chamber shell and O-ring seal;
Sulphuric dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas;
4th hand valve, measures air chamber with sulphuric dioxide and is connected;
Environment temperature sensor, for the real time temperature of real-time clock mutual inductor surrounding environment;
Second switch solenoid valve, measures air chamber with sulphuric dioxide and is connected;
Force (forcing) pump, is connected with second switch solenoid valve;
Four-way, is connected respectively with force (forcing) pump, the 3rd hand valve, the second tensimeter and pressure-regulating valve;
3rd hand valve, is connected with four-way;
Second tensimeter, is connected with four-way;
Pressure-regulating valve, is connected respectively with four-way and the second hand valve;
Traffic filter, be connected respectively with the first tensimeter, the second tensimeter, sulfur hexafluoride infrared sensor, sulphuric dioxide electrochemical sensor and environment temperature sensor, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and the real time temperature that export for the first force value to the first tensimeter output, the second tensimeter carry out filtering process respectively;
Signal amplifier, is connected with traffic filter, for amplifying respectively filtered first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and real time temperature;
8 analog to digital converters, be connected with signal amplifier, for carrying out analog to digital conversion respectively to obtain digitizing first force value, digitizing second force value, digitizing sulfur hexafluoride purity, digitizing content of sulfur dioxide and digitizing real time temperature to the first force value, the second force value, sulfur hexafluoride purity, content of sulfur dioxide and the real time temperature after amplification;
FLASH memory, 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, be connected with 8 analog to digital converters by 8 bit input and output interfaces, to receive digitizing first force value, digitizing second force value, digitizing sulfur hexafluoride purity, digitizing content of sulfur dioxide and digitizing real time temperature, also be connected with FLASH memory, to send the first Pressure Alarm when digitizing first force value exceeds pressure threshold scope, the second Pressure Alarm is sent when digitizing second force value exceeds pressure threshold scope, sulfur hexafluoride purity alerting signal is sent when digitizing sulfur hexafluoride purity exceeds sulfur hexafluoride purity threshold range, content of sulfur dioxide alerting signal is sent when digitizing content of sulfur dioxide exceeds content of sulfur dioxide threshold range, environment temperature alerting signal is sent when digitizing real time temperature exceeds 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 alerting signal, content of sulfur dioxide alerting signal or environment temperature alerting signal.
3. method as claimed in claim 2, is characterized in that:
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 to digital converters can process by signal amplifier respectively.
4. method as claimed in claim 2, is characterized in that:
Digital signal processor is the dsp chip of TI company.
5. method as claimed in claim 2, is characterized in that:
Audible-visual annunciator comprises two-way speaker and LED array alarm lamp.
6. method as claimed in claim 2, is characterized in that:
Traffic filter and signal amplifier are integrated on one piece of surface-mounted integrated circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785820.0A CN105445690A (en) | 2015-11-16 | 2015-11-16 | Using method of current transformer real-time on-line monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785820.0A CN105445690A (en) | 2015-11-16 | 2015-11-16 | Using method of current transformer real-time on-line monitoring device |
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| CN105445690A true CN105445690A (en) | 2016-03-30 |
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| CN201510785820.0A Withdrawn CN105445690A (en) | 2015-11-16 | 2015-11-16 | Using method of current transformer real-time on-line monitoring device |
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Application publication date: 20160330 |