CN102565686A - Embedded type intelligent vacuum circuit breaker for real-time monitoring - Google Patents

Embedded type intelligent vacuum circuit breaker for real-time monitoring Download PDF

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Publication number
CN102565686A
CN102565686A CN2011104041399A CN201110404139A CN102565686A CN 102565686 A CN102565686 A CN 102565686A CN 2011104041399 A CN2011104041399 A CN 2011104041399A CN 201110404139 A CN201110404139 A CN 201110404139A CN 102565686 A CN102565686 A CN 102565686A
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China
Prior art keywords
signal
unit
circuit breaker
vacuum circuit
module
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Pending
Application number
CN2011104041399A
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Chinese (zh)
Inventor
沈行良
陈宇晨
韦钰
祁为群
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Priority to CN2011104041399A priority Critical patent/CN102565686A/en
Publication of CN102565686A publication Critical patent/CN102565686A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an embedded type intelligent vacuum circuit breaker for real-time monitoring. The vacuum circuit breaker comprises a signal collecting unit, a front-end signal conditioning unit, an AD (Analog-to-Digital) converting unit, an I/O (Input/Output) unit, an embedded type controller, an HMI (Human-Machine Interface) and a temperature measuring unit, wherein the signal collecting unit is connected with the front-end signal conditioning unit, the front-end signal conditioning unit is respectively connected with the embedded type controller through the AD converting unit and the I/O unit, and the embedded type controller is respectively connected with the HMI and the temperature measuring unit. Compared with the prior art, the embedded type intelligent vacuum circuit breaker for real-time monitoring, disclosed by the invention, has the advantages that a basis is provided for analyzing and judging the running performance of the vacuum circuit breaker, the maintenance cost of a power grid is reduced, the reliability of the power grid is increased.

Description

A kind of intelligent vacuum circuit breaker of Embedded Real-Time monitoring
Technical field
The present invention relates to a kind of technical field of vacuum circuit breaker, especially relate to a kind of intelligent vacuum circuit breaker of Embedded Real-Time monitoring.
Background technology
Vacuum circuit breaker is one of indispensable equipment of Operation of Electric Systems, and the develop rapidly of power industry is indubitable, and demand also grows with each passing day thereupon.Yet face of mankind under the energy crisis predicament situation, each by every means energy-saving and emission-reduction of industry of each item, and power industry provides the main force of the energy as society, proposes to realize intelligent grid, further improves the electric energy output efficiency, reduces loss.
The intelligent high-pressure vacuum circuit breaker will be one of vitals of intelligent grid, and under its online in real time running status, the Continuous Tracking image data writes down the operation conditions of isolating switch automatically, for operational decisions and isolating switch diagnosis provide foundation.
Isolating switch is that power industry is carried out the most frequent equipment of action, if break down, can cause power grid accident during operation, causes serious economy loss, jeopardizes life safety even, therefore its reliability has been proposed very high requirement.Duty, rejected region and the fault analysis of isolating switch can in time be understood by isolating switch on-line condition monitoring system; Reduce too early or unnecessary power failure test and maintenance, reduce maintenance workload, reduce maintenance cost; Improve the specific aim of maintenance, further improve the Operation of Electric Systems reliability.
On-line condition monitoring is the basis of implementing repair based on condition of component, and with scientific methods equipment running status being carried out real time record, monitoring and diagnosis is the key of implementing repair based on condition of component.China focuses mostly in transformer for the research of status of electric power maintenance; The main equipment that generator is one type; State recording, monitoring and Studies on Diagnosis for isolating switch also are in the starting stage, and the following problem of ubiquity in the conventional online monitoring system: monitoring variable is few, function singleness; Lack the data of online data record, be difficult to make systematicness and comprehensive evaluation; The means of analysis are restricted, can't adopt efficient mathematical method and technological means the identification of the running status of isolating switch.
For example application number is the running status of 201010612238.1 intelligent vacuum circuit breaker on-line monitoring isolating switch; But measurement parameter is less; Overall operation situation that can not the effecting reaction isolating switch is embodied in the data storage before lacking, be difficult to and present stage operation conditions do contrast and analyze.Therefore, detection and the maintenance to power equipment can not provide effective foundation.
Summary of the invention
The object of the invention is exactly the intelligent vacuum circuit breaker of Embedded Real-Time monitoring that in order to overcome the defective that above-mentioned prior art exists a kind of maintenance cost that reduces electrical network is provided, has improved the reliability of electrical network.
The object of the invention can be realized through following technical scheme:
A kind of intelligent vacuum circuit breaker of Embedded Real-Time monitoring; It is characterized in that; Comprise signal gathering unit, front end signal conditioning unit, AD converting unit, I/O unit, embedded controller, man-machine interface and temperature measurement unit; Described signal gathering unit is connected with front end signal conditioning unit; Described front end signal conditioning unit is connected with embedded controller through AD converting unit, I/O unit respectively, and described embedded controller is connected with man-machine interface, temperature measurement unit respectively.
Described signal gathering unit comprises mechanical parameter signal acquisition module and electrical parameter signal acquisition module.
The mechanical parameter signal of described mechanical parameter signal acquisition module collection comprises main contacts position signalling, switching current and branch brake current;
The variable signal of the whole process of the described main contacts position signalling settling position that to be main contacts from the original position divided close to completion;
Described switching current is respectively the electric current of closing coil and the electric current of switching winding with the branch brake current.
The electrical parameter signal of described electrical parameter signal acquisition module collection comprises the three-phase voltage of primary side, three-phase current, control loop voltage and the energy storage motor electric current of primary side;
The three-phase voltage of primary side and three-phase current are main contacts loop electrical parameters, and control loop voltage is the WV of isolating switch.
Described temperature measurement unit comprises and is installed in every phase main contacts totally six temperature sensors and environment temperature sensor up and down.
Described front end signal conditioning unit comprises level switch module, waveform-shaping module, electrical isolation module, signal filtering module and phase compensation block, and this front end signal conditioning unit is used for the signal of the mechanical parameter signal of signal gathering unit collection and electrical parameter signal and AD converting unit, I/O unit is complementary.
Be provided with in the described embedded controller:
DBM is used for the data of store mechanical parameter signal, electrical parameter signal, temperature signal, on/off switch curve data, systematic parameter.
Image data and conversion module are used to gather the external data of AD converting unit and I/O interface unit, and transform to corresponding physical quantity;
The control and management module is used to control the action of other modules;
The running status processing module is used for electrical parameter signal and temperature signal are handled accordingly and show;
The mechanical property processing module is used for the mechanical parameter signal is handled accordingly and shows;
Operation trend figure display module is used to show combined floodgate curve, switching current curve, separating brake curve, separating brake current curve, temperature curve;
Fault diagnosis and alarm module are used for the mechanical parameter signal of setting and the out-of-limit prompting of data and the warning of electrical parameter signal;
The inquiry of historical data module is used for the data of mechanical parameter and the data of electrical parameter are inquired about.
Described A/D converting unit is an embedded controller treatment of simulated amount signal, and described I/O unit is that embedded controller is handled the switching value signal.
Described embedded controller is the ARM industrial computer.
Described man-machine interface comprises LCD display and touch-screen, realizes the data monitoring function of intelligent vacuum circuit breaker through the operation man-machine interface.
Compared with prior art, the present invention has following characteristics:
1, on-line monitoring of the present invention and fault diagnosis can in time be found fault, not only can provide equipment existing running status, and can also analyze the variation tendency of various important parameters; Judge to have or not and have the fault tendency; For the state maintenance of equipment provides foundation, thereby increase apparatus maintenance maintenance period, improve usage ratio of equipment; Reduce the maintenance expense, thereby have important economic implications;
2, the Monitoring Data of real time record vacuum circuit breaker, these data and curve can be equipment and the electric network state maintenance provides foundation;
3, Embedded Monitoring System is installed in the vacuum circuit breaker, and both do as a whole.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the functional block diagram of embedded controller of the present invention;
Fig. 3 is the process flow diagram of running status processing of the present invention, fault diagnosis and warning and the inquiry of historical data;
Fig. 4 is a mechanical property sampling process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
As shown in Figure 1; A kind of intelligent vacuum circuit breaker of Embedded Real-Time monitoring; Comprise signal gathering unit, front end signal conditioning unit 3, AD converting unit 4, I/O unit 5, embedded controller 6, man-machine interface and temperature measurement unit 9; Described signal gathering unit is connected with front end signal conditioning unit 3; Described front end signal conditioning unit 3 is connected with embedded controller 6 through AD converting unit 4, I/O unit 5 respectively, and described embedded controller 6 is connected with man-machine interface, temperature measurement unit 9 respectively.
Described signal gathering unit comprises mechanical parameter signal acquisition module 1 and electrical parameter signal acquisition module 2.The mechanical parameter signal that described mechanical parameter signal acquisition module 1 is gathered comprises main contacts position signalling, switching current and branch brake current; The variable signal of the whole process of the described main contacts position signalling settling position that to be main contacts from the original position divided close to completion; Described switching current is respectively the electric current of closing coil and the electric current of switching winding with the branch brake current.The electrical parameter signal that described electrical parameter signal acquisition module 2 is gathered comprises the three-phase voltage of primary side, three-phase current, control loop voltage and the energy storage motor electric current of primary side; The three-phase voltage of primary side and three-phase current are main contacts loop electrical parameters, and control loop voltage is the WV of isolating switch.
Described temperature measurement unit 9 comprises and is installed in every phase main contacts totally six temperature sensors and environment temperature sensor up and down.
Described front end signal conditioning unit 3 comprises level switch module, waveform-shaping module, electrical isolation module, signal filtering module and phase compensation block, and this front end signal conditioning unit is used for the signal of the mechanical parameter signal of signal gathering unit collection and electrical parameter signal and AD converting unit 4, I/O unit 5 is complementary.
Described A/D converting unit 4 is embedded controller 6 treatment of simulated amount signals, and described I/O unit 5 is that embedded controller 6 is handled the switching value signal.Described embedded controller 6 is the ARM industrial computer.
Described man-machine interface comprises LCD display 7 and touch-screen 8, realizes the data monitoring function of intelligent vacuum circuit breaker through the operation man-machine interface.
Like Fig. 2, Fig. 3, shown in Figure 4, be provided with in the described embedded controller:
DBM 101 is used for store mechanical parameter signal, electrical parameter signal, temperature signal, on/off switch curve data, systematic parameter.
Image data and conversion module 102 are used to gather the external data of AD converting unit and I/O interface unit, and transform to corresponding physical quantity;
Control and management module 103 is used to control the action of other modules;
Running status processing module 104 is used for electrical parameter signal and temperature signal are handled accordingly and show;
Mechanical property processing module 105 is used for the mechanical parameter signal is handled accordingly and shows;
Operation trend figure display module 106 is used to show combined floodgate curve, switching current curve, separating brake curve, separating brake current curve, temperature curve;
Fault diagnosis and alarm module 107 are used for the mechanical parameter signal of setting and the out-of-limit prompting of data and the warning of electrical parameter signal;
The inquiry of historical data module 108 is used for the data of mechanical parameter and the data of electrical parameter are inquired about.

Claims (10)

1. the intelligent vacuum circuit breaker of Embedded Real-Time monitoring; It is characterized in that; Comprise signal gathering unit, front end signal conditioning unit, AD converting unit, I/O unit, embedded controller, man-machine interface and temperature measurement unit; Described signal gathering unit is connected with front end signal conditioning unit; Described front end signal conditioning unit is connected with embedded controller through AD converting unit, I/O unit respectively, and described embedded controller is connected with man-machine interface, temperature measurement unit respectively.
2. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 1 is characterized in that described signal gathering unit comprises mechanical parameter signal acquisition module and electrical parameter signal acquisition module.
3. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 2 is characterized in that the mechanical parameter signal of described mechanical parameter signal acquisition module collection comprises main contacts position signalling, switching current and branch brake current;
The variable signal of the whole process of the described main contacts position signalling settling position that to be main contacts from the original position divided close to completion, thus calculate the mechanical parameter data of isolating switch;
Described switching current is respectively the electric current of closing coil and the electric current of switching winding with the branch brake current.
4. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 2; It is characterized in that the electrical parameter signal of described electrical parameter signal acquisition module collection comprises three-phase current, control loop voltage and the energy storage motor electric current of the three-phase voltage of primary side, primary side;
The three-phase voltage of primary side and three-phase current are main contacts loop electrical parameters, and control loop voltage is the WV of isolating switch.
5. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 1 is characterized in that, described temperature measurement unit comprises and is installed in every phase main contacts totally six temperature sensors and environment temperature sensor up and down.
6. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 2; It is characterized in that; Described front end signal conditioning unit comprises level switch module, waveform-shaping module, electrical isolation module, signal filtering module and phase compensation block, and this front end signal conditioning unit is used for the signal of the mechanical parameter signal of signal gathering unit collection and electrical parameter signal and AD converting unit, I/O mouth is complementary.
7. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 1 is characterized in that, is provided with in the described embedded controller:
DBM is used for the data of store mechanical parameter signal, electrical parameter signal, temperature signal, on/off switch curve data, systematic parameter.
Image data and conversion module are used to gather the external data of AD converting unit and I/O interface unit, and transform to corresponding physical quantity;
The control and management module is used to control the action of other modules;
The running status processing module is used for electrical parameter signal and temperature signal are handled accordingly and show;
The mechanical property processing module is used for the mechanical parameter signal is handled accordingly and shows;
Operation trend figure display module is used to show combined floodgate curve, switching current curve, separating brake curve, separating brake current curve, temperature curve;
Fault diagnosis and alarm module are used for the mechanical parameter signal of setting and the out-of-limit prompting of data and the warning of electrical parameter signal;
The inquiry of historical data module is used for the data of mechanical parameter and the data of electrical parameter are inquired about.
8. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 1 is characterized in that described A/D converting unit is an embedded controller treatment of simulated amount signal, and described I/O unit is that embedded controller is handled the switching value signal.
9. the intelligent breaker of a kind of Embedded Real-Time monitoring according to claim 7 is characterized in that described embedded controller is the ARM industrial computer.
10. the intelligent vacuum circuit breaker of a kind of Embedded Real-Time monitoring according to claim 1 is characterized in that described man-machine interface comprises LCD display and touch-screen, realizes the data monitoring function of intelligent vacuum circuit breaker through the operation man-machine interface.
CN2011104041399A 2011-12-07 2011-12-07 Embedded type intelligent vacuum circuit breaker for real-time monitoring Pending CN102565686A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103558545A (en) * 2013-11-16 2014-02-05 沈阳工业大学 Device and method for detecting on-off prebreakdown time of breaker
CN105867236A (en) * 2016-04-22 2016-08-17 南彦勃 Intelligent control system of high-voltage circuit-breaker with self-diagnostic function

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08306279A (en) * 1995-05-08 1996-11-22 Mitsubishi Electric Corp Vacuum degree monitoring device for vacuum circuit-breaker
CN201465883U (en) * 2009-03-23 2010-05-12 上海南华兰陵电气有限公司 Medium voltage vacuum breaker with function of state on-line monitoring
CN201594130U (en) * 2009-11-03 2010-09-29 湖南先步信息股份有限公司 High-voltage breaker online monitoring device
CN201716398U (en) * 2010-05-20 2011-01-19 常州市明及电气技术开发有限公司 On-line monitoring device of vacuum circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08306279A (en) * 1995-05-08 1996-11-22 Mitsubishi Electric Corp Vacuum degree monitoring device for vacuum circuit-breaker
CN201465883U (en) * 2009-03-23 2010-05-12 上海南华兰陵电气有限公司 Medium voltage vacuum breaker with function of state on-line monitoring
CN201594130U (en) * 2009-11-03 2010-09-29 湖南先步信息股份有限公司 High-voltage breaker online monitoring device
CN201716398U (en) * 2010-05-20 2011-01-19 常州市明及电气技术开发有限公司 On-line monitoring device of vacuum circuit breaker

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103558545A (en) * 2013-11-16 2014-02-05 沈阳工业大学 Device and method for detecting on-off prebreakdown time of breaker
CN103558545B (en) * 2013-11-16 2015-12-09 沈阳工业大学 A kind of isolating switch closes pre arcing time pick-up unit and method
CN105867236A (en) * 2016-04-22 2016-08-17 南彦勃 Intelligent control system of high-voltage circuit-breaker with self-diagnostic function

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