CN101975881A - Diagnosis and early warning device of faults of mine explosion-proof dry type transformers - Google Patents
Diagnosis and early warning device of faults of mine explosion-proof dry type transformers Download PDFInfo
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Abstract
A diagnosis and early warning device of faults of mine explosion-proof dry type transformers comprises a microprocessor unit, a sensor unit, a signal conditioning unit, a data acquisition unit, a data storage unit and a communication unit, wherein all the units adopt voltage and current transformers and temperature, current and pulse current sensors to obtain signals; the signal conditioning unit is used for converting the output signals of the voltage and current transformers and the temperature and current sensors to the signals with voltage within 0-3V and converting the output signals of the pulse current sensors to the signals with voltage within minus 2-2V; the data acquisition unit and the microprocessor unit are used for carrying out data acquisition and processing on the output signals of the signal conditioning unit; the data storage unit is used for realizing real-time storage of the data; and the communication unit supports compatible integrated connection of the device and the monitoring network and is used for centralized data processing, characteristics analysis and resource sharing. The device has overall monitoring parameters and simple structure and can ensure continuity, reliability and safety of mine production.
Description
Technical field
The present invention relates to a kind of transformer diagnosis prior-warning device, especially a kind of running status and failure symptom to flameproof dry-type transformer carries out real time on-line monitoring, and has the device of fault diagnosis and warning function.
Technical background
The robotization of coal production is more and more higher to the requirement of Safety of Coal Mine Production, but the annual various mine safety accidents that cause because of the electric power system fault take place again and again, accounts for about 70% of total accident.The mobile substation is the power supply hinge of down-hole, and the quality of its flameproof dry-type transformer performance and state directly affects the underground power supply used reliability in colliery, security and continuity.But because the flameproof dry-type transformer monitoring parameter is single, lack effective on-line monitoring means, thereby can't know the running status of dry-type transformer, more can't find its potential faults and make fault diagnosis and early warning.If can carry out fault diagnosis and early warning to flameproof dry-type transformer, determine character, classification, reason and the position of fault early, the change ex-post analysis is early warning in advance, the sprouting of containment accident, reduce the scope that harm involves, the present situation that colliery electric power system security incident is taken place frequently is taken on a new look greatly.Therefore, flameproof dry-type transformer is carried out fault diagnosis and early warning has very important practical sense.
The state of flameproof dry-type transformer can characterize by parameters such as its three-phase operation voltage and current, three phase windings and iron core temperature, iron core leakage current and shelf depreciations.Existing notification number is the utility model patent of CN2821586 a kind of " dry-type transformer comprehensive control instrument ", has adopted the monitoring means than horn of plenty, provides a kind of voltage to the open-type dry-type transformer, electric current, temperature to carry out the device of comprehensively monitoring.But, because flameproof dry-type transformer and open-type dry-type transformer difference structurally and environment for use is different, this measurement and control instrument can not be directly used in flameproof dry-type transformer, and the monitoring parameter of this monitor is not comprehensive, does not relate to the monitoring of iron core leakage current and shelf depreciation two class important parameters.Because: the first, will help finding the multipoint earthing of iron core phenomenon of one of dry-type transformer most common failure to the monitoring of iron core leakage current; The second, the aging and destruction of dry-type transformer insulation is all from shelf depreciation.So the monitoring of these parameters is helped grasping the running status and the failure symptom of dry-type transformer comprehensively, and by on-line monitoring and real-time analysis to these characteristic parameters, utilize the artificial intelligence theory to carry out data fusion and knowledge processing, make fault diagnosis and early warning by expert system.Yet there are no the bibliographical information of flameproof dry-type transformer fault diagnosis early warning, and the flameproof dry-type transformer of selling on market only is to utilize the electrothermal relay that is installed in the explosion-resistant enclosure to carry out the overtemperature trip protection, detected parameters is single, do not obtain the real time data of monitoring and tracing trouble exactly, can't early warning, make that the related personnel can't in time, accurately understand the running status of transformer before accident takes place; After accident took place, the related personnel also can't grasp the failure message of transformer comprehensively, more can't be fast, the accurate reason of location accident.Therefore, press for a kind of flameproof dry-type transformer fault diagnosis prewarning device of invention.
Summary of the invention
The present invention is based on existing flameproof dry-type transformer utilizes electrothermal relay to carry out the overtemperature trip protection; fail to monitor the deficiency of its running status and failure symptom and early warning; provide a kind of monitoring parameter comprehensively, have fault diagnosis and warning function, distributed networked flameproof dry-type transformer fault diagnosis prewarning device simple in structure, easy for installation, with continuity, reliability and the security that guarantees that mine is produced.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of flameproof dry-type transformer fault diagnosis prewarning device, comprise microprocessor unit, sensor unit, signal condition unit, data acquisition unit, data storage cell and communication unit, its described each unit is three-phase operation voltage and current, three phase windings and iron core temperature, iron core leakage current and three phase windings and the iron core local discharge signal that obtains flameproof dry-type transformer by 3 voltage transformer (VT), 3 current transformers, 4 temperature sensors, 1 current sensor and 4 pulses of current sensor respectively; By the signal condition unit with 3 voltage transformer (VT), 3 current transformers, the signal of 4 temperature sensors and 1 current sensor output is transformed to the signal of amplitude in 0～3V scope respectively, with the signal of 4 pulses of current sensor output be transformed to respectively amplitude-2V～+ signal in the 2V scope, finish data acquisition and signal Processing by data acquisition unit and microprocessor unit to the signal condition element output signal, realize the real-time storage of data by data storage cell, communication unit is supported compatible integrated connection of described device and monitoring network, is used for focusing on of data, specificity analysis and resource sharing;
Described microprocessor unit comprises microprocessor U1, level transferring chip U2 and U3, active crystal oscillator U4, voltage monitoring chip U5 and button S1 and jtag interface U6, and microprocessor U1 has adopted 32 low-power consumption dsp chips of high-performance of TI company;
Described sensor unit comprises 3 voltage transformer (VT), 3 current transformers, 4 temperature sensors, 1 current sensor and 4 pulses of current sensor;
Described signal condition unit comprises 3 voltage modulate circuits, 3 current regulating circuit, 4 temperature modulate circuits, 1 iron core leakage current modulate circuit and 1 shelf depreciation modulate circuit, the input end of 3 voltage modulate circuits is connected with the output terminal of 3 voltage transformer (VT) respectively, the input end of 3 current regulating circuit links to each other with the output terminal of 3 current transformers respectively, the input end of 4 temperature modulate circuits is connected with the output terminal of 4 temperature sensors respectively, the input end of 1 iron core leakage current modulate circuit is connected with the output terminal of 1 current sensor, and the input end of 1 shelf depreciation modulate circuit is connected with the output terminal of 4 pulses of current sensor;
Described data acquisition unit comprises the inner A/D converter of DSP and extends out high-speed a/d converter, 11 input ports of the inner A/D converter of DSP are connected with the output terminal of 3 voltage modulate circuits, 3 current regulating circuit, 4 temperature modulate circuits and 1 iron core leakage current modulate circuit respectively, and the input end that extends out high-speed a/d converter is connected with the output terminal of 1 shelf depreciation modulate circuit;
Described data storage cell comprises 512k * 16 a sram chip U30, sram chip U30 data terminal is connected with the address end with the data terminal of microprocessor U1 respectively with the address end, the chip select line of SRAM is connected with the perimeter chip select line of microprocessor U1, and read-write control line is connected with the read-write control line of microprocessor U1 respectively;
Described communication unit comprises RS-485 transceiver U31, light-coupled isolation device U32, U33, U34 and phase inverter U35, and RS-485 transceiver U31 is connected with serial ports SCIRXDA end, SCITXDA end and the GPIOA4 end of microprocessor U1 by light-coupled isolation device U32, U33, U34 and phase inverter U35;
Described microprocessor has solidified the monitoring facilities of three-phase operation voltage and current, three phase windings and iron core temperature, iron core leakage current and three phase windings and iron core local discharge signal, comprises master routine, A/D conversion routine, signal Processing subroutine and communication subroutine.
The above-mentioned flameproof dry-type transformer fault diagnosis prewarning device of the invention process, compared with prior art, advantage that is had and good effect are: this device carries out real time on-line monitoring by the parameters such as voltage and current, three phase windings and iron core temperature, iron core leakage current and shelf depreciation to the flameproof dry-type transformer three-phase operation; Employing is suitable for the RS-485 circuit of high-speed communication under the coal mine, can finish telecommunication, and data transmission distance reaches 1.2km, and message transmission rate reaches 2.5Mbps; Utilize the artificial intelligence theory to carry out Multi-source Information Fusion, set up expert system, have fault diagnosis and warning function, also can in time find the incipient fault of flameproof dry-type transformer, feed back failure message early, accurate fault location, the fault eliminating measure is proposed as early as possible, it is single to overcome present flameproof dry-type transformer monitoring parameter, lack effective on-line monitoring means, can't carry out the deficiencies in the prior art such as fault diagnosis and early warning, avoided regular manual inspection, improved the continuity of flameproof dry-type transformer and electric power system operation flameproof dry-type transformer, reliability and security.
Apparatus of the present invention are central processing unit with powerful, cheap 32 the low-power consumption dsp chips of existing capability, have simplified the system peripherals hardware expanding, and volume is little, and is simple in structure, and cost is low, also are convenient to install; Adopt lightning protection and anti-surge circuit, hardware integrated filter and software digital filter device, improved the antijamming capability of system, be convenient to the further popularization in later stage.This monitoring device is not only applicable to flameproof dry-type transformer, and other high voltage electric power equip ment fault diagnosis and early warning are also had certain practical value, is with a wide range of applications.
Description of drawings
Fig. 1 is a system architecture diagram of the present invention;
Fig. 2 is microprocessor unit circuit theory diagrams of the present invention;
Fig. 3 is a voltage modulate circuit schematic diagram of the present invention;
Fig. 4 is current regulating circuit theory diagrams of the present invention;
Fig. 5 is a temperature modulate circuit schematic diagram of the present invention;
Fig. 6 is an iron core leakage current modulate circuit schematic diagram of the present invention;
Fig. 7 is a shelf depreciation modulate circuit schematic diagram of the present invention;
Fig. 8 is a High Speed Data Acquisition Circuit schematic diagram of the present invention;
Fig. 9 is data storage cell circuit theory diagrams of the present invention;
Figure 10 is communication unit circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by embodiment the flameproof dry-type transformer fault diagnosis prewarning device that the present invention proposes is described in further detail, this professional those of ordinary skill is after having read present embodiment, can understand and implement the present invention, equally, this specific embodiment also can bring aforesaid good effect, realizes purpose of the present invention.
Implement a kind of flameproof dry-type transformer fault diagnosis prewarning device of the present invention, comprise microprocessor unit, sensor unit, signal condition unit, data acquisition unit, data storage cell and communication unit.
System construction drawing as described in Figure 1.
Arrive each element circuit schematic diagram of the described monitoring device of Figure 10 as Fig. 2.
Wherein: microprocessor unit as described in Figure 2 mainly comprises microprocessor U1, level transferring chip U2 and U3, active crystal oscillator U4, voltage monitoring chip U5 and button S1 and jtag interface U6.Realize signal Processing by microprocessor unit.Microprocessor U1 has adopted 32 low-power consumption dsp chips of high-performance of TI company.Utilizing 5V to change 3.3V level transferring chip U2 provides system required 3.3V power supply, and utilizing 5V to change 1.8V level transferring chip U3 provides system required 1.8V power supply.Utilize active crystal oscillator U4 that clock signal is provided.Adopt voltage monitoring chip U5 and button S1 to realize the voltage monitoring and the reset function of system.Supply voltage generation momentary power failure when system, and VCC is when being lower than 2.7V, and the OUT pin output low level of U5 resets microprocessor U1.Like this, guarantee that when mains fluctuations, microprocessor U1 duty is normal.Simultaneously, external button S1 on the OUT of U5 pin can be to the manual hard reset of system implementation.Utilize jtag interface U6 to realize system's on-line debugging.
Described sensor unit mainly comprises 3 voltage transformer (VT), 3 current transformers, 4 temperature sensors, 1 current sensor and 4 pulses of current sensor, obtains three-phase operation voltage and current, three phase windings and iron core temperature, iron core leakage current and three phase windings and the iron core local discharge signal of flameproof dry-type transformer respectively.Voltage transformer (VT) is selected the mining voltage transformer (VT) of dry type for use.Current transformer is selected the mining current transformer of dry type for use.Temperature sensor is selected the Pt100 platinum resistance for use.Current sensor is selected the passive wide-range current sensor of punching for use.It is the Rogowski coil of 20MHz that pulses of current sensor is selected frequency band for use.
Described signal condition unit mainly comprises voltage modulate circuit, current regulating circuit, temperature modulate circuit, iron core leakage current modulate circuit and shelf depreciation modulate circuit.By the signal condition unit signal of 3 voltage transformer (VT), 3 current transformers, 4 temperature sensors and 1 current sensor output is transformed to the signal of amplitude in 0～3V scope respectively, with the signal of 4 pulses of current sensor outputs be transformed to respectively amplitude-2V～+ signal in the 2V scope.As shown in Figure 3, the voltage modulate circuit mainly comprises secondary voltage mutual inductor U7 and operational amplifier U8, U9.The input end of secondary voltage mutual inductor U7 links to each other with the output terminal of voltage transformer (VT), and its output terminal links to each other with the input end of operational amplifier U8.The output terminal of operational amplifier U8 links to each other with the input end of operational amplifier U9.The voltage modulate circuit is transformed to signal in the inner A/D converter range of receiving of microprocessor U1 with the voltage signal of gathering.As shown in Figure 4, the current regulating circuit mainly comprises secondary current mutual inductor U10 and operational amplifier U11, U12.The input end of secondary current mutual inductor U10 links to each other with the output terminal of current transformer, and its output terminal links to each other with the input end of operational amplifier U11.The output terminal of operational amplifier U11 links to each other with the input end of operational amplifier U12.The current regulating circuit is transformed to signal in the inner A/D converter range of receiving of microprocessor U1 with the current signal of gathering.As shown in Figure 5, the temperature modulate circuit mainly comprises temperature one voltage transmission chip U13.3 input ends 1,2,3 of temperature modulate circuit link to each other with 3 output terminals of three-wire system temperature sensor Pt100 platinum resistance.The temperature modulate circuit is transformed to signal in the inner A/D converter range of receiving of microprocessor U1 with the temperature signal of gathering.As shown in Figure 6, iron core leakage current modulate circuit mainly comprises operational amplifier U14, U15.The input end of operational amplifier U14 links to each other with the output terminal of current sensor, and its output terminal links to each other with the input end of operational amplifier U15.Iron core leakage current modulate circuit is transformed to signal in the inner A/D converter range of receiving of microprocessor U1 with the iron core leakage current signal of gathering.This device adopts expansion differential balance method to gather three phase windings and iron core local discharge signal, and promptly 4 pulses of current sensor pick up the high frequency partial discharge signal from A phase, B phase, C phase high voltage side lead-in end and iron core grounding sheet respectively.The output signal of 4 pulses of current sensor is through after the elementary amplification, by 2 four select an analog switch respectively simultaneously gating wherein 2 road signals as the differential wave source, it is right to form a balance, and these 2 signals are carried out differential comparison, just can amplify inner local discharge signal, suppress external interference signals simultaneously.As shown in Figure 7, the shelf depreciation modulate circuit comprises that mainly instrument amplifier U16, U17, U18, U19, U22, four select an analog switch U20, U21, low pass elliptic filter U23, operational amplifier U24, U25.Instrument amplifier U16, U17, U18, the input end of U19 links to each other with the output terminal of 4 pulses of current sensor respectively, its output terminal all selects an analog switch U20 with 2 four respectively, the input end of U21 is corresponding to link to each other, the output terminal and four that is instrument amplifier U16 selects an analog switch U20, the INO end of U21 links to each other, the output terminal of instrument amplifier U17 and four selects an analog switch U20, the IN1 end of U21 links to each other, the output terminal of instrument amplifier U18 and four selects an analog switch U20, the IN2 end of U21 links to each other, and the output terminal of instrument amplifier U19 and four selects an analog switch U20, the IN3 end of U21 links to each other.Instrument amplifier U16, U17, U18, U19 high frequency partial discharge signal that will gather, faint amplify suitable multiple.2 four to select an analog switch U20, U21 to choose 2 different signals respectively simultaneously from 4 passages right as a balance.The input end of instrument amplifier U22 selects the output terminal of an analog switch U20, U21 to link to each other with 2 four, selects the signal of an analog switch gating to carry out differential ratio to 2 four, and its output terminal links to each other with the input end of low pass elliptic filter U23.The input end of operational amplifier U24 links to each other with the output terminal of low pass elliptic filter U23, and its output terminal links to each other with the input end of operational amplifier U25.Low pass elliptic filter U23 forms low-pass filter circuit, and low-frequency cut-off frequency is 40kHz.Operational amplifier U24, U25 form high-pass filtering circuit, and the high-frequency cut-off frequency is 1MHz.Both form bandpass filter jointly, and passband is 40kHz～1MHz, both can the filtering low frequency signal, again can filtering part high frequency interference, and can also play anti-aliasing effect simultaneously.
Described data acquisition unit mainly comprises the inner A/D converter of DSP and extends out high-speed a/d converter.Finish data acquisition by data acquisition unit to the signal condition element output signal.11 input port ADCINA0, ADCINA1, ADCINA2, ADCINA3, ADCINA4, ADCINA5, ADCINA6, ADCINA7, ADCINB0, ADCINB1, the ADCINB2 of the inner A/D converter of DSP link to each other with the output terminal of 3 voltage modulate circuits, 3 current regulating circuit, 4 temperature modulate circuits and 1 iron core leakage current modulate circuit respectively.As shown in Figure 8, the input end of high speed operation amplifier U26 links to each other with the output terminal of 1 shelf depreciation modulate circuit, and its output terminal links to each other with the input end that extends out high-speed a/d converter U27.High speed operation amplifier U26 forms voltage follower.High-speed a/d converter U27 finishes the collection of high frequency partial discharge signal.The output terminal of high-speed a/d converter U27 links to each other with the input end of level transferring chip U28.The output terminal of level transferring chip U28 links to each other with the data terminal of microprocessor U1.Because the level of high-speed a/d converter U27 is+5V, and the level of microprocessor U1 data terminal is+3.3V, so the two link to each other to need to finish from+5V to+3.3V or level conversion from+3.3V to+5V through level transferring chip U28.The clock signal of high-speed a/d converter U27 is obtained through high speed d type flip flop U29 four frequency divisions by the outside clock signal end XCLKOUT of microprocessor U1.
As shown in Figure 9, described data storage cell mainly comprises 512k * 16 a sram chip U30.Realize the real-time storage of data by data storage cell.Sram chip U30 data terminal links to each other with the address end with the data terminal of address end respectively at microprocessor U1.The chip select line of SRAM links to each other with the perimeter chip select line of microprocessor U1, and read-write control line links to each other with the read-write control line of microprocessor U1 respectively.The capacity of 512k * 16 sram chip can satisfy need for equipment, especially the demand that high frequency partial discharge signal Monitoring Data is stored.
As shown in figure 10, described communication unit mainly comprises RS-485 transceiver U31 and light-coupled isolation device U32, U33, U34 and phase inverter U35.By compatible integrated connection that communication unit is realized this device and monitoring network, be used for the focusing on of data, specificity analysis and resource sharing.RS-485 transceiver U31 links to each other with serial ports SCIRXDA end, SCITXDA end and the GPIOA4 end of microprocessor U1 by light-coupled isolation device U32, U33, U34 and phase inverter U35, carries out data communication.
Claims (1)
1. flameproof dry-type transformer fault diagnosis prewarning device, comprise microprocessor unit, sensor unit, signal condition unit, data acquisition unit, data storage cell and communication unit, and obtain three-phase operation voltage and current, three phase windings, iron core temperature, iron core leakage current and three phase windings and the iron core local discharge signal of flameproof dry-type transformer by 3 voltage transformer (VT), 3 current transformers, 4 temperature sensors, 1 current sensor and 4 pulses of current sensor respectively; By the signal condition unit with 3 voltage transformer (VT), 3 current transformers, the signal of 4 temperature sensors and 1 current sensor output is transformed to the signal of amplitude in 0～3V scope respectively, with the signal of 4 pulses of current sensor output be transformed to respectively amplitude-2V～+ signal in the 2V scope, finish data acquisition and signal Processing by data acquisition unit and microprocessor unit to the signal condition element output signal, realize the real-time storage of data by data storage cell, communication unit is supported compatible integrated connection of described device and monitoring network, is used for focusing on of data, specificity analysis and resource sharing;
Described microprocessor unit comprises microprocessor U1, level transferring chip U2 and U3, active crystal oscillator U4, voltage monitoring chip U5, button S1 and jtag interface U6, and microprocessor U1 adopts 32 low-power consumption dsp chips;
Described sensor unit comprises 3 voltage transformer (VT), 3 current transformers, 4 temperature sensors, 1 current sensor and 4 pulses of current sensor;
Described signal condition unit comprises 3 voltage modulate circuits, 3 current regulating circuit, 4 temperature modulate circuits, 1 iron core leakage current modulate circuit and 1 shelf depreciation modulate circuit, the input end of 3 voltage modulate circuits is connected with the output terminal of 3 voltage transformer (VT) respectively, the input end of 3 current regulating circuit is connected with the output terminal of 3 current transformers respectively, the input end of 4 temperature modulate circuits is connected with the output terminal of 4 temperature sensors respectively, the input end of 1 iron core leakage current modulate circuit is connected with the output terminal of 1 current sensor, and the input end of 1 shelf depreciation modulate circuit is connected with the output terminal of 4 pulses of current sensor;
Described data acquisition unit comprises the inner A/D converter of DSP and extends out high-speed a/d converter, 11 input ports of the inner A/D converter of DSP are connected with the output terminal of 3 voltage modulate circuits, 3 current regulating circuit, 4 temperature modulate circuits and 1 iron core leakage current modulate circuit respectively, and the input end that extends out high-speed a/d converter is connected with the output terminal of 1 shelf depreciation modulate circuit;
Described data storage cell comprises 512k * 16 a sram chip U30, sram chip U30 data terminal is connected with the address end with the data terminal of microprocessor U1 respectively with the address end, the chip select line of SRAM is connected with the perimeter chip select line of microprocessor U1, and read-write control line is connected with the read-write control line of microprocessor U1 respectively;
Described communication unit comprises RS-485 transceiver U31, light-coupled isolation device U32, U33, U34 and phase inverter U35, and RS-485 transceiver U31 is connected with serial ports SCIRXDA end, SCITXDA end and the GPIOA4 end of microprocessor U1 by light-coupled isolation device U32, U33, U34 and phase inverter U35;
Described microprocessor has solidified the monitoring facilities of three-phase operation voltage and current, three phase windings and iron core temperature, iron core leakage current and three phase windings and iron core local discharge signal, comprises master routine, A/D conversion routine, signal Processing subroutine and communication subroutine.
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| CN102221651A (en) * | 2011-03-11 | 2011-10-19 | 太原理工大学 | Fault on-line diagnosis and early warning method of flameproof dry-type transformer for mine |
| CN102818656A (en) * | 2012-08-16 | 2012-12-12 | 大连世有电力科技有限公司 | On-line monitoring system for temperature of transformer core |
| CN103455061A (en) * | 2013-09-04 | 2013-12-18 | 顺特电气设备有限公司 | Temperature control device for dry transformer and operation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1322971A1 (en) * | 2000-08-29 | 2003-07-02 | Siemens Limited | Re-locatable partial discharge transducer head |
| CN2821586Y (en) * | 2005-08-08 | 2006-09-27 | 万达集团股份有限公司 | Dry transformer complex monitor |
| EP1908085A1 (en) * | 2005-06-29 | 2008-04-09 | Philippe Magnier | Device for preventing the explosion of an electrical transformer |
| CN201402917Y (en) * | 2009-05-04 | 2010-02-10 | 济源市科灵电器有限责任公司 | Mining flameproof and intrinsic safety type high-pressure vacuum electromagnetic starter |
| CN101762355A (en) * | 2009-12-31 | 2010-06-30 | 太原理工大学 | Vacuum tube vacuum-degree on-line monitoring device of high-voltage power distribution device and method thereof |
-
2010
- 2010-08-25 CN CN2010102669657A patent/CN101975881B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1322971A1 (en) * | 2000-08-29 | 2003-07-02 | Siemens Limited | Re-locatable partial discharge transducer head |
| EP1908085A1 (en) * | 2005-06-29 | 2008-04-09 | Philippe Magnier | Device for preventing the explosion of an electrical transformer |
| CN2821586Y (en) * | 2005-08-08 | 2006-09-27 | 万达集团股份有限公司 | Dry transformer complex monitor |
| CN201402917Y (en) * | 2009-05-04 | 2010-02-10 | 济源市科灵电器有限责任公司 | Mining flameproof and intrinsic safety type high-pressure vacuum electromagnetic starter |
| CN101762355A (en) * | 2009-12-31 | 2010-06-30 | 太原理工大学 | Vacuum tube vacuum-degree on-line monitoring device of high-voltage power distribution device and method thereof |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156245B (en) * | 2011-03-11 | 2016-08-03 | 太原理工大学 | A kind of mine high-voltage cable on-line fault diagnosis and method for early warning |
| CN102221651A (en) * | 2011-03-11 | 2011-10-19 | 太原理工大学 | Fault on-line diagnosis and early warning method of flameproof dry-type transformer for mine |
| CN102156245A (en) * | 2011-03-11 | 2011-08-17 | 太原理工大学 | On-line fault diagnosis and prewarning method of mine high-voltage cable |
| CN102221651B (en) * | 2011-03-11 | 2015-05-27 | 太原理工大学 | Fault on-line diagnosis and early warning method of flameproof dry-type transformer for mine |
| CN102818656A (en) * | 2012-08-16 | 2012-12-12 | 大连世有电力科技有限公司 | On-line monitoring system for temperature of transformer core |
| CN103455061B (en) * | 2013-09-04 | 2016-08-31 | 顺特电气设备有限公司 | Temperature control device for dry transformer and method of operating thereof |
| CN103455061A (en) * | 2013-09-04 | 2013-12-18 | 顺特电气设备有限公司 | Temperature control device for dry transformer and operation method thereof |
| CN105548767A (en) * | 2016-01-04 | 2016-05-04 | 国家电网公司 | Power transformer loss live-line measurement and hot spot temperature prediction system and method |
| CN105675162A (en) * | 2016-01-27 | 2016-06-15 | 系新电子技术（苏州）有限公司 | Multi-point temperature detection system |
| CN106168510A (en) * | 2016-08-24 | 2016-11-30 | 广东电网有限责任公司电力科学研究院 | Optical fibre pre-buried module, system and the total system of a kind of transformer temperature monitoring |
| CN106168510B (en) * | 2016-08-24 | 2019-08-30 | 广东电网有限责任公司电力科学研究院 | A kind of optical fibre pre-buried module, system and the total system of transformer temperature monitoring |
| CN106643880A (en) * | 2016-11-23 | 2017-05-10 | 上海申瑞继保电气有限公司 | Transformer early warning method for operation and maintenance system |
| CN106643880B (en) * | 2016-11-23 | 2019-07-26 | 秦皇岛华城电力工程有限公司 | The transformer method for early warning of operational system |
| CN109813373A (en) * | 2019-01-30 | 2019-05-28 | 济南大学 | A kind of detection circuit and detection method of built-in mining diving pump |
| CN110412328A (en) * | 2019-09-03 | 2019-11-05 | 山东富澳电力设备有限公司 | A kind of combination electronic mutual inductor and measuring system for distribution transformer |
| CN110687483A (en) * | 2019-10-26 | 2020-01-14 | 湖北民族大学 | High-voltage distribution transformer on-line monitoring and fault diagnosis device |
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