CN2715322Y - On-line monitoring device for mechanical characteristics of high-voltage vacuum circuit breaker - Google Patents
On-line monitoring device for mechanical characteristics of high-voltage vacuum circuit breaker Download PDFInfo
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- CN2715322Y CN2715322Y CN 200420078133 CN200420078133U CN2715322Y CN 2715322 Y CN2715322 Y CN 2715322Y CN 200420078133 CN200420078133 CN 200420078133 CN 200420078133 U CN200420078133 U CN 200420078133U CN 2715322 Y CN2715322 Y CN 2715322Y
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Abstract
The utility model relates to an electric force protecting device, in particular to a single coil permanent-magnet mechanism driver for vacuum circuit breaker. The single coil permanent-magnet mechanism driver for vacuum circuit breaker comprises a separated control unit and a user panel unit which are connected by a twisted pair line, and communications are realized by adopting a communication protocol. The control unit comprises a main discharge circuit which is a centrally symmetrical half-bridge structure, a close driving unit, an opening driving unit, a standby power supply switch-in control module, a power supply module and a single-chip computer. The user panel unit comprises a nixietube, an open button, a close button and a single chip computer. The utility model has the advantages that firstly, the function of standby power supply is provided although an accumulator is omitted, and the reservations of electrical energy is stable and reliable; secondly, the control unit and the user panel are separated, so that the mounting can be convenient, and the wire connection is simple but uneasy to be disturbed; thirdly, the single coil permanent-magnet mechanism driver for vacuum circuit breaker has simple structure, low cost and long service life.
Description
Technical field
The utility model relates to electrical protection apparatus, more specifically to a kind of High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device.
Background technology
At present in electrical protection apparatus; for the general monitoring method that adopts of High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device be: the stroke signal of surveying moving contact of breaker with grating encoder; survey the dc coil current signal with current sensor; with the current signal of instrument transformer measurement circuit breaker major loop, survey the auxiliary contact position signal with photoelectric coupling technology.Adopt the collection value error of above-mentioned its part physical signalling of monitoring method bigger, such as, with the stroke signal of grating encoder survey moving contact of breaker, because the grating encoder response speed is slow, the stroke of moving contact of breaker is very little, and action is fast, causes moving contact of breaker stroke measurment deviation big.For another example, judge the position signalling of circuit breaker with auxiliary contact position, determine branch, closing time with position signalling, measured closing time is that closing coil has electric current that the time of electric current is all arranged to the major loop three-phase, but in fact, circuit breaker is when operation, and existing prebreakdown current did not pass through when moving contact arrived closing position, so measured value is less than normal than actual value; Measured opening time is that switching winding has electric current to auxiliary switch position change-over time, because auxiliary switch is the mechanical type change over switch, response speed is very poor, and change-over time, deviation was very big, therefore opening time is also inaccurate, finally causes branch, the closing time measured inaccurate.
Summary of the invention
Main order of the present utility model is: solve the signals collecting inaccuracy that existing High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device exists, cause on-Line Monitor Device to measure low-response, problem that error is big, it is more accurate to propose a kind of measurement, response speed is fast, and the linearity is good, the High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device of stronger antijamming capability is arranged, and it is achieved by following technical proposals:
It comprises adopting the stroke monitoring means 1 of DC-DC LVDT displacement transducer, adopt the current monitoring unit 2 of Hall current sensor, adopt the vibration monitoring unit 3 of mechanical oscillation signal acceleration transducer and Monitoring Data, input data are handled and exported result's data processing unit 4.
Described current monitoring unit 2 comprises magnetic compensation formula Hall current sensor 11, signal conditioning circuit 12, A/D converter 10; Data processing unit 4 comprises single-chip microcomputer 15, interface chip 16, nixie display 17, button 18, printer 19 and PC 20, the input of signal conditioning circuit 12 connects described current sensor 11, its output connects the input of single-chip microcomputer 15 by A/D converter 10, the input and the printer 19 of single-chip microcomputer 15 corresponding output connecting interface chips 16, the corresponding outputs of interface chip 16 connect nixie display 17 and keyboards 18, adopt the RS485 communications protocol to carry out communication between PC 20 and single-chip microcomputer and are connected.
Described vibration monitoring unit 3 comprises mechanical oscillation signal acceleration transducer 13, charge amplifying circuit 14, A/D converter 10, the input of charge amplifying circuit 14 connects described transducer 13, and its output connects the input of single-chip microcomputer 15 by A/D converter 10.
Described stroke monitoring means 1 comprises DC-DC LVDT displacement transducer 8, signal conditioning circuit 9, A/D converter 10, and the input of signal conditioning circuit 9 connects described transducer 8, and its output connects the input of single-chip microcomputer 15 by A/D converter 10.
The utility model compared with the prior art, its beneficial effect is: can judge more accurately that 1) moving contact of breaker has just closed position and its constantly, thereby can reflect the mechanical property parameter of vacuum circuit-breaker truely and accurately; 2) linearity dynamic characteristic of measurement path increment is good, and response speed is fast, good reproducibility, and have stronger antijamming capability; 3) method of testing is simple, suitable, and functions such as real time print and communication are arranged, and system design is more perfect; 4) the testing element volume is little, and is easy for installation, and price is suitable, long service life.
Description of drawings
Fig. 1 is a theory diagram of the present utility model
Fig. 2 is a signal conditioning circuit
Fig. 3 is the sensor fixing structure schematic diagram
1 is the stroke monitoring means among the figure, the 2nd, current monitoring unit, the 3rd, vibration monitoring unit, the 4th, data processing unit, the 5th, the moving contact stroke signal, the 6th, coil current signal, the 7th, mechanical oscillation acceleration signal, the 8th, DC-DC LVDT displacement transducer, 9, the 11st, signal conditioning circuit, the 10th, A/D converter, the 12nd, magnetic compensation formula Hall current sensor, the 13rd, mechanical oscillation signal acceleration transducer, the 14th, charge amplifying circuit, the 15th, single-chip microcomputer, the 16th, interface chip, the 17th, nixie display, the 18th, keyboard, the 19th, printer, the 20th, PC, the 21st, RS485 communications protocol, the 22nd, the breaker mechanism casing, the 23rd, insulated tension pole, the 24th, moving contact, the 25th, fixed contact.
Embodiment
Below in conjunction with accompanying drawing the utility model and advantage thereof are described further.
Contrast Fig. 1, after moving contact stroke signal 5 is received by DA-15 type DC-DC LVDT displacement transducer 13, the mechanical displacement signal of moving contact 24 is converted to the voltage signal of synchronous variation, displacement range 0～the 30mm of its measurement, 0～30mm linear displacement signal can be converted to the d. c. voltage signal output of 0～5V, the voltage signal of output is delivered to signal conditioning circuit 9 and is carried out filtering, this circuit is a kind of second-order active filter circuit commonly used, referring to Fig. 2, it mainly is the elimination High-frequency Interference, make and transport to A/D converter 10 behind the signal smoothing and carry out analog-to-digital conversion, handle to single-chip microcomputer 15 then, single-chip microcomputer 15 adopts AT89C51, and it comes out the size of the displacement that detection system detects in real time by printer 19 real time prints.During measurement, DC-DC LVDT displacement transducer 8 is installed on the insulated tension pole 23 in the high-pressure vacuum breaker operating mechanism 22, sees also Fig. 3, can realize the measurement of contact travel characteristic.Its linearity is good, and response speed is fast, and good reproducibility has stronger antijamming capability.One time of stroke characteristic when the closing of circuit breaker, separating brake is the important parameter that characterizes mechanical property, also is to calculate that high-pressure vacuum breaker closes, the foundation of opening velocity.The measurement of moving contact of breaker speed mainly is by measuring one time of the stroke relation of moving contact, then through calculating the parameters such as speed of moving contact.After PC 20 these data of storage, carry out necessary calculating, draw the mechanical property parameter of circuit breaker then.
Current sensor adopts CSB1V-100A Hall current sensor 12 in the present embodiment, measuring range 0～± 200A, little, the good electric property of its volume, advantage such as precision height, linearity dynamic characteristic are good, and close, switching winding loop lead-in wire punching and mistake can not impact the normal operation of vacuum circuit-breaker main system.After magnetic compensation formula Hall current sensor 11 is collected coil current signal 16, deliver to signal and carry out filtering, modulate circuit 12 is that the second-order active filter circuit is consistent with modulate circuit 9, see also Fig. 2, the filtered signal of telecommunication sends into one by one relatively that AD574 type A/D converter 10 carries out analog-to-digital conversion, enters single-chip microcomputer 15 then and handles.
Mechanical oscillation signal acceleration transducer 13 is installed on the base of breaker mechanism casing 22, referring to Fig. 3, adopts the CZ3-46 piezoelectric acceleration transducer, and its measuring range is 0～100m/s
2, measure the vibration acceleration signal 7 of breaker body perpendicular to horizontal direction.The mechanical oscillation waveform is that the sine wave by a series of decay combines, the amplitude of external vibration response is directly proportional with the size of impact forces, the corresponding moving contact of breaker of peak response vibration signal closes constantly, can determine the closing time of circuit breaker by the frequency of vibration signal.The signal that measures amplifies through DHF-3 type charge amplifier 14, carries out analog-to-digital conversion through A/D674 type A/D converter 10 again, enters single-chip microcomputer 15 then and handles.
The establishment of closing time is by the maximum moment that has electric current to the mechanical oscillation response amplitude in the closing coil.In conjunction with the stroke in the making process-time response curve, that can determine contact successively opens distance and overtravel.By overtravel, stroke-time response curve in the moment that occurs in conjunction with the switching winding electric current and the separating brake process can be determined opening time.By close, separating brake stroke-time response curve can reduction go out speed-time response curve, can obtain successively close, separating brake average speed (and just close, just-off speed, close, the separating brake maximal rate).So the utility model real time record: close, opening time, the closing rebound time, close, separating brake average speed (and just close, just-off speed, close, the separating brake maximal rate), contact travel, open mechanical property parameters such as distance, overtravel.And by interface chip 16 display line loop current characteristic curve on PC, contact travel-time graph, the vibration acceleration wavy curve, these curves not only reflect the size of the mechanical property parameter of vacuum circuit-breaker, the operating characteristics that also reflects the mechanical operating mechanism of vacuum circuit-breaker can be passed through these curves, and mechanical operating mechanism is differentiated, be failure diagnosis, realized the on-line monitoring of breaker mechanic property preferably.
The numerical value of the every real-time monitoring of button 18 control nixie displaies 17 outputs, as: show close, opening time, display speed or the like.Instruction transfers to single-chip microcomputer 15 by interface chip 16, and single-chip microcomputer is received instruction back and PC communication, will data presented transfer to nixie display 17 demonstrations by interface chip 16.Charactron data presented value is closed, opening time, closes, separating brake average speed, closes, the separating brake maximal rate, contact travel, opens the size of mechanical property parameter values such as distance, overtravel.These calculate and data processing function is realized by software program.
The installation of testing element can not influence the normal operation of vacuum circuit-breaker in the utility model, ambient temperature in the time of bearing the impact of high voltage, highfield, breaker operator and vibration and work, and it is stable, certainty of measurement is higher, antijamming capability is strong, can reflect the vacuum breaker mechanical features parameter truly.Method of testing is simple, suitable, and the testing element price is suitable, and volume is little, and is easy for installation, long service life.
Claims (4)
1, High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device, it is characterized in that comprising the stroke monitoring means (1) that adopts DC-DC LVDT displacement transducer, adopt the current monitoring unit (2) of Hall current sensor, adopt the vibration monitoring unit (3) of mechanical oscillation signal acceleration transducer and Monitoring Data, input data are handled and exported result's data processing unit (4).
2, High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device according to claim 1 is characterized in that described current monitoring unit 2 comprises magnetic compensation formula Hall current sensor (11), signal conditioning circuit (12), A/D converter (10); Described data processing unit (4) comprises single-chip microcomputer (15), interface chip (16), nixie display (17), keyboard (18), printer (19) and PC (20), the input of signal conditioning circuit (12) connects described current sensor (11), its output connects the input of single-chip microcomputer (15) by A/D converter (10), the input of single-chip microcomputer (15) corresponding output connecting interface chip (16) and printer (19), the corresponding output of interface chip (16) connects nixie display (17) and keyboard (18), adopts the RS485 communications protocol to carry out communication between PC (20) and the single-chip microcomputer (15) and connects.
3, High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device according to claim 1, it is characterized in that described stroke monitoring means (1) comprises DC-DC LVDT displacement transducer (8), signal conditioning circuit (9) and A/D converter (10), the input of signal conditioning circuit (9) connects described transducer (8), and its output connects the input of single-chip microcomputer (15) by A/D converter (10).
4, High-pressure Vacuum Circuit Breaker Mechanical Feature Online Monitoring Device according to claim 1, it is characterized in that described vibration monitoring unit (3) comprises mechanical oscillation signal acceleration transducer (13), charge amplifying circuit (14) and A/D converter (10), the input of charge amplifying circuit (14) connects described transducer (13), and its output connects the input of single-chip microcomputer (15) by A/D converter (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420078133 CN2715322Y (en) | 2004-07-28 | 2004-07-28 | On-line monitoring device for mechanical characteristics of high-voltage vacuum circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420078133 CN2715322Y (en) | 2004-07-28 | 2004-07-28 | On-line monitoring device for mechanical characteristics of high-voltage vacuum circuit breaker |
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| CN2715322Y true CN2715322Y (en) | 2005-08-03 |
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| CN 200420078133 Expired - Fee Related CN2715322Y (en) | 2004-07-28 | 2004-07-28 | On-line monitoring device for mechanical characteristics of high-voltage vacuum circuit breaker |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446572B (en) * | 2008-12-17 | 2011-06-22 | 重庆交通大学 | Device for detecting cavity beneath structural panel by instantaneous impulsion method and detection method thereof |
| CN102176129A (en) * | 2011-02-24 | 2011-09-07 | 常州市明及电气技术开发有限公司 | Intelligent vacuum breaker speed online monitoring device and method |
| CN101871946B (en) * | 2009-04-21 | 2012-05-30 | 西安秦骊成套电器有限公司 | Testing device of opening-closing speed of high-voltage circuit breaker |
| CN102683098A (en) * | 2012-05-17 | 2012-09-19 | 芜湖明远电力设备制造有限公司 | Intelligent high-pressure vacuum circuit breaker |
| CN103633618A (en) * | 2013-10-26 | 2014-03-12 | 安徽龙波电气有限公司 | Electrified on-line monitoring and protecting device for intelligent high-voltage vacuum circuit breaker |
| CN103954446A (en) * | 2014-05-22 | 2014-07-30 | 大全集团有限公司 | Operation force-displacement curve testing device of breaker and automatic detection system thereof |
| CN105372059A (en) * | 2015-12-15 | 2016-03-02 | 河海大学常州校区 | High-voltage isolating switch mechanical characteristic on-line monitoring apparatus and monitoring method thereof |
| CN105424525A (en) * | 2015-12-18 | 2016-03-23 | 江苏森源电气股份有限公司 | Acquisition system, judgment system, acquisition method and judgment method for circuit breaker contact wear |
| CN105423887A (en) * | 2015-12-18 | 2016-03-23 | 江苏森源电气股份有限公司 | System for collecting displacements of breaker contact terminal and method for collecting displacements of breaker contact terminal |
| CN105510814A (en) * | 2015-11-26 | 2016-04-20 | 国家电网公司 | 10 KV high-voltage distribution device vacuum circuit breaker permanent magnet mechanism current detection system |
| CN105548874A (en) * | 2015-12-31 | 2016-05-04 | 北京四方继保自动化股份有限公司 | Intelligent switch state integrated online monitoring and fault diagnosis apparatus |
| CN106783303A (en) * | 2016-12-29 | 2017-05-31 | 中国西电电气股份有限公司 | A kind of high-voltage switch gear divide-shut brake acts mechanical property monitoring method and equipment |
| CN107121635A (en) * | 2017-06-19 | 2017-09-01 | 贵州电网有限责任公司电力科学研究院 | A kind of vacuum circuit breaker on-Line Monitor Device |
| CN107887224A (en) * | 2017-10-24 | 2018-04-06 | 山东泰开高压开关有限公司 | The divide-shut brake speed measurement apparatus and measuring method of a kind of vacuum circuit breaker |
| CN110398350A (en) * | 2019-07-23 | 2019-11-01 | 赵怡宸 | Breaker mechanic property monitoring method, device, electronic equipment and storage medium |
| CN112285553A (en) * | 2020-12-25 | 2021-01-29 | 广东电网有限责任公司佛山供电局 | Non-contact type measuring device and method for average opening and closing speed of 10kV vacuum circuit breaker |
-
2004
- 2004-07-28 CN CN 200420078133 patent/CN2715322Y/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446572B (en) * | 2008-12-17 | 2011-06-22 | 重庆交通大学 | Device for detecting cavity beneath structural panel by instantaneous impulsion method and detection method thereof |
| CN101871946B (en) * | 2009-04-21 | 2012-05-30 | 西安秦骊成套电器有限公司 | Testing device of opening-closing speed of high-voltage circuit breaker |
| CN102176129A (en) * | 2011-02-24 | 2011-09-07 | 常州市明及电气技术开发有限公司 | Intelligent vacuum breaker speed online monitoring device and method |
| CN102683098A (en) * | 2012-05-17 | 2012-09-19 | 芜湖明远电力设备制造有限公司 | Intelligent high-pressure vacuum circuit breaker |
| CN103633618A (en) * | 2013-10-26 | 2014-03-12 | 安徽龙波电气有限公司 | Electrified on-line monitoring and protecting device for intelligent high-voltage vacuum circuit breaker |
| CN103954446A (en) * | 2014-05-22 | 2014-07-30 | 大全集团有限公司 | Operation force-displacement curve testing device of breaker and automatic detection system thereof |
| CN105510814A (en) * | 2015-11-26 | 2016-04-20 | 国家电网公司 | 10 KV high-voltage distribution device vacuum circuit breaker permanent magnet mechanism current detection system |
| CN105372059B (en) * | 2015-12-15 | 2018-07-27 | 河海大学常州校区 | High voltage isolator mechanical property on-Line Monitor Device and its monitoring method |
| CN105372059A (en) * | 2015-12-15 | 2016-03-02 | 河海大学常州校区 | High-voltage isolating switch mechanical characteristic on-line monitoring apparatus and monitoring method thereof |
| CN105424525A (en) * | 2015-12-18 | 2016-03-23 | 江苏森源电气股份有限公司 | Acquisition system, judgment system, acquisition method and judgment method for circuit breaker contact wear |
| CN105423887A (en) * | 2015-12-18 | 2016-03-23 | 江苏森源电气股份有限公司 | System for collecting displacements of breaker contact terminal and method for collecting displacements of breaker contact terminal |
| CN105424525B (en) * | 2015-12-18 | 2019-03-26 | 江苏森源电气股份有限公司 | Contact of breaker abrasion acquisition system judges system, acquisition method and judgment method |
| CN105548874A (en) * | 2015-12-31 | 2016-05-04 | 北京四方继保自动化股份有限公司 | Intelligent switch state integrated online monitoring and fault diagnosis apparatus |
| CN105548874B (en) * | 2015-12-31 | 2019-03-01 | 北京四方继保自动化股份有限公司 | A kind of comprehensive on-line monitoring of intelligent switch state and trouble-shooter |
| CN106783303B (en) * | 2016-12-29 | 2018-09-14 | 中国西电电气股份有限公司 | A kind of high-voltage switch gear divide-shut brake action mechanical property monitoring method and equipment |
| CN106783303A (en) * | 2016-12-29 | 2017-05-31 | 中国西电电气股份有限公司 | A kind of high-voltage switch gear divide-shut brake acts mechanical property monitoring method and equipment |
| CN107121635A (en) * | 2017-06-19 | 2017-09-01 | 贵州电网有限责任公司电力科学研究院 | A kind of vacuum circuit breaker on-Line Monitor Device |
| CN107887224A (en) * | 2017-10-24 | 2018-04-06 | 山东泰开高压开关有限公司 | The divide-shut brake speed measurement apparatus and measuring method of a kind of vacuum circuit breaker |
| CN107887224B (en) * | 2017-10-24 | 2023-09-01 | 山东泰开高压开关有限公司 | Switching-on and switching-off speed measuring device and measuring method of vacuum circuit breaker |
| CN110398350A (en) * | 2019-07-23 | 2019-11-01 | 赵怡宸 | Breaker mechanic property monitoring method, device, electronic equipment and storage medium |
| CN112285553A (en) * | 2020-12-25 | 2021-01-29 | 广东电网有限责任公司佛山供电局 | Non-contact type measuring device and method for average opening and closing speed of 10kV vacuum circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hubei Electrical Equipment Manufacturing Co., Ltd. Assignor: Beijing Intelligent Distribution Automation Equipment Co., Ltd. Contract fulfillment period: 2006.10.20 to 2014.10.19 Contract record no.: 2008420000032 Denomination of utility model: Device for online detecting mechanical characteristics of 24 kV high-voltage vacuum circuit breaker Granted publication date: 20050803 License type: Exclusive license Record date: 20081023 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.10.20 TO 2014.10.19; CHANGE OF CONTRACT Name of requester: HUBEI EDIANDAQUAN ELECTRICAL EQUIPMENT MANUFACTURI Effective date: 20081023 |