CN203839267U - Permanent magnetic mechanism vacuum circuit breaker multi-signal acquisition system - Google Patents
Permanent magnetic mechanism vacuum circuit breaker multi-signal acquisition system Download PDFInfo
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- CN203839267U CN203839267U CN201420246674.5U CN201420246674U CN203839267U CN 203839267 U CN203839267 U CN 203839267U CN 201420246674 U CN201420246674 U CN 201420246674U CN 203839267 U CN203839267 U CN 203839267U
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- circuit breaker
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- signal acquisition
- vacuum circuit
- permanent magnetic
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Abstract
The utility model relates to a permanent magnetic mechanism vacuum circuit breaker multi-signal acquisition system. The permanent magnetic mechanism vacuum circuit breaker multi-signal acquisition system includes a signal acquisition unit, a central processing unit, a communication unit and an upper computer unit; the signal acquisition unit comprises a permanent magnet surface magnetic field strength signal acquisition module, a vibration signal acquisition module, an operation mechanism current signal acquisition module, a contact head contact pressure signal acquisition module and an arc extinguish chamber shielding cover potential signal acquisition module. With the permanent magnetic mechanism vacuum circuit breaker multi-signal acquisition system adopted, permanent magnet surface magnetic field strength signals, mechanical vibration signal, operating mechanism current signals, contact head contact pressure signals and arc extinguish chamber shielding cover potential signals can be acquired, and the types of acquired signals of a circuit breaker can be supplemented, and a database of the acquired signals of the circuit breaker can be expanded; accurate positioning acquisition of vibration signals at a position where mechanical failures tend to occur can be realized; and the working states of key mechanical components of the circuit breaker can be positioned and monitored in real time. A double-CPU structure is adopted as the central processing unit of the system, and therefore, fast processing of a large quantity of data and real-time information storage can be realized.
Description
Technical field
The utility model relates to the many signal acquiring systems of a kind of permanent magnetic actuator vacuum circuit breaker.
Background technology
Circuit breaker is most important control and protection equipment in electric power system, and its running status directly affects operation stability and the power supply reliability of electric power system.Along with the construction and development of intelligent grid, not only require the circuit breaker can reliability service and realize intellectualized operation, and the accuracy of State-Inspect of High-Voltage Circuit is also had higher requirement.The signal of circuit breaker is gathered overall scientific, can provide correct foundation for operation power department formulates Strategies of Maintenance.Permanent magnet mechanism is the breaker operation mechanism that a kind of electromagnetism actuating, permanent magnetism keep.At present, permanent magnet mechanism has been widely used in middle pressure vacuum circuit-breaker field.Therefore, the research of permanent magnetic actuator vacuum circuit breaker signal acquisition method is had great importance.
The current collection for permanent magnetic actuator vacuum circuit breaker signal, mainly for permanent magnetic actuator vacuum circuit breaker operating mechanism current signal and mechanical oscillation signal.Operating mechanism electric loop current signal can reflect that whether permanent-magnet operating mechanism coil is aging, the important operating mechanism electric loop information such as contactor contact situation in current supply circuit.When permanent magnetic actuator vacuum circuit breaker mechanical oscillation signal can reflect circuit breaker action, the operating state of the vitals such as release, tripping spring, insulated tension pole.
But as complicated power equipment, the factor that affects the operating state of permanent magnetic actuator vacuum circuit breaker is not limited only to the mechanical part of operating mechanism electric loop and circuit breaker.Also should consider contact situation and arc control device insulation situation.Contact situation can reflect with the contact between dynamic/static contact.In the time that contact reduces between permanent magnetic actuator vacuum circuit breaker dynamic/static contact, in the latter stage of breaker closing, there will be obvious contact bounce, and then cause contact surface ablation, the even phenomenon of melting welding; For permanent magnetic actuator vacuum circuit breaker, the vacuum degree of vacuum interrupter is related to the insulation property of arc control device inside, in the time that arc control device vacuum degree declines, can badly influence cut-offfing and closing performance of permanent magnetic actuator vacuum circuit breaker.Vacuum interrupter radome electric potential signal can reflect the insulation situation of arc control device.Therefore, need to gather contact pressure signal and vacuum interrupter radome electric potential signal.
In addition, the divide-shut brake terminal location of permanent magnetic actuator vacuum circuit breaker need to rely on the confining force of permanent magnet to realize the maintenance of divide-shut brake terminal location.But permanent magnet is under external condition impact, may occur the phenomenon of demagnetization.This can cause the magnetic field intensity producing in permanent magnet surfaces to reduce, and then weakens the confining force of permanent magnet, affects the divide-shut brake hold mode of circuit breaker at divide-shut brake terminal location.Therefore, need to monitor the magnetic field intensity of permanent magnet in permanent magnetic actuator vacuum circuit breaker.
But, at present in permanent magnetic actuator vacuum circuit breaker signals collecting field, seldom gather for magnetic field of permanent magnet strength signal, contact pressure signal, vacuum interrupter radome electric potential signal.Especially above-mentioned five kinds of signals are not carried out the acquisition system of synthetical collection.
Summary of the invention
The deficiency existing for prior art, the utility model provides a kind of permanent magnetic actuator vacuum circuit breaker many signal acquiring systems.
The technical solution of the utility model is:
The many signal acquiring systems of a kind of permanent magnetic actuator vacuum circuit breaker, comprise signal gathering unit, CPU, communication unit and host computer unit.
Described signal gathering unit comprises surface magnetic field intensity of permanent magnet signal acquisition module, vibration signals collecting module, operating mechanism current signal collection module, contact pressure signal acquisition module and arc control device radome electric potential signal acquisition module;
Described CPU comprises signal conversion module and central processing module.
The output of the output of the surface magnetic field intensity of permanent magnet signal acquisition module of described signal gathering unit, the output of vibration signals collecting module, operating mechanism current signal collection module, the output of contact pressure signal acquisition module and the output of arc control device radome electric potential signal acquisition module are connected respectively the input of signal conversion module, the output of signal conversion module connects the input of central processing module, the output of central processing module is connected with the input of communication unit, and the output of communication unit is connected with host computer unit.
Described surface magnetic field intensity of permanent magnet signal acquisition module is arranged on permanent magnetic actuator vacuum circuit breaker inner permanent magnetic surface, vibration signals collecting module has multiple insulated tension poles that are arranged on respectively permanent magnetic actuator vacuum circuit breaker, tripping spring, release and permanent magnetic actuator vacuum circuit breaker pedestal, operating mechanism current signal collection module is arranged in the electric loop of permanent magnetic actuator vacuum circuit breaker operating mechanism, contact pressure signal acquisition module has multiple each phase insulated tension pole of permanent magnetic actuator vacuum circuit breaker and junctions of touch spring of being arranged on respectively, arc control device radome electric potential signal acquisition module is arranged on the vacuum extinction outdoor of permanent magnetic actuator vacuum circuit breaker.
The central processing module of described CPU adopts dsp processor and arm processor composition dual-cpu structure, adopts dual port RAM to connect between two CPU.
The surface magnetic field intensity of permanent magnet signal acquisition module of described signal gathering unit adopts Hall magnetic field probe.
The vibration signals collecting module of described signal gathering unit adopts vibrating sensor.
The operating mechanism current signal collection module of described signal gathering unit adopts current sensor.
The contact pressure signal acquisition module adopts pressure sensor of described signal gathering unit.
The arc control device radome electric potential signal acquisition module of described signal gathering unit adopts electric field probe.
Between the signal conversion module of described CPU and central processing module, be connected with level shifting circuit.
The beneficial effects of the utility model are:
Based on many signal acquiring systems, can gather surface magnetic field intensity of permanent magnet signal, mechanical oscillation signal, operating mechanism electric loop current signal, contact pressure signal and arc control device radome electric potential signal simultaneously, supplement the collection signal type of circuit breaker, expanded the database of circuit breaker collection signal; Based on the collection of the multiple positions of circuit breaker vibration signal, realize commute and occurred the accurately online positioning acquisition of mechanical abort situation vibration signal, the operating state of position monitor circuit breaker key mechanical part in real time; The CPU of the many signal acquiring systems of circuit breaker adopts dual-cpu structure, can realize rapid, high volume data processing and information real-time storage.The data message of real-time storage can be used as the historical data base of breaker signal.
Brief description of the drawings
Fig. 1 is the structured flowchart of the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker of the utility model embodiment;
Fig. 2 is dual-cpu structure and the functional schematic of the CPU of the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker of the utility model embodiment;
Fig. 3 is the level shifting circuit figure of the CPU of the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker of the utility model embodiment;
Fig. 4 is many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker communication unit circuit diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is elaborated.
Present embodiment is taking ZW45-12 type permanent magnetic actuator vacuum circuit breaker as example, permanent magnetic actuator vacuum circuit breaker is carried out to many signals collecting, as shown in Figure 1, the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker comprise signal gathering unit, CPU, communication unit and host computer unit.The output of the surface magnetic field intensity of permanent magnet signal acquisition module of signal gathering unit, the output of vibration signals collecting module, the output of operating mechanism current signal collection module, the output of contact pressure signal acquisition module and the output of arc control device radome electric potential signal acquisition module are connected respectively the input of the signal conversion module of CPU, the output of the signal conversion module of CPU connects the input of the central processing module of CPU, the output of central processing module is connected with the input of communication unit, the output of communication unit is connected with host computer unit.
The collection signal of signal gathering unit comprises: surface magnetic field intensity of permanent magnet signal, mechanical oscillation signal, operating mechanism current signal, contact pressure signal and arc control device radome electric potential signal.CPU carries out the signal receiving after signal processing, to pass to host computer unit by communication unit; Communication unit is the signal transmission passage that connects CPU and host computer unit; The human-computer interaction functions such as host computer unit receives the signal data that communication unit transmits, operation, inquiry, demonstration, storage, editor and the printing of realization on host computer.
Signal gathering unit comprises surface magnetic field intensity of permanent magnet signal acquisition module, vibration signals collecting module, operating mechanism current signal collection module, contact pressure signal acquisition module and arc control device radome electric potential signal acquisition module.
Surface magnetic field intensity of permanent magnet signal acquisition module adopts hall probe to measure surface magnetic field intensity of permanent magnet, hall probe is through the bottom of permanent magnetic actuator vacuum circuit breaker, and being arranged on the permanent magnet surfaces of permanent magnetic actuator vacuum circuit breaker inside, it is LT-1.4 type magnet field probe that hall probe is selected model.
Vibration signals collecting module adopts vibrating sensor to gather the mechanical oscillation signal of permanent magnetic actuator vacuum circuit breaker, vibrating sensor is arranged on respectively bottom, tripping spring two ends, release and the permanent magnetic actuator vacuum circuit breaker base bottom of permanent magnetic actuator vacuum circuit breaker ABC three phase isolated pull bar, can move to permanent magnetic actuator vacuum circuit breaker time, the vibration signal at ABC three phase isolated pull bar, tripping spring, release and pedestal place gathers simultaneously.What vibrating sensor was selected is that model is LC0159 type piezoelectric acceleration sensor, sensitivity 10mV/g, and range is 500g, frequency range is 1-12000Hz.
Operating mechanism current signal collection module adopts current sensor, current sensor is selected punching closed loop Hall current sensor, be arranged in the electric loop of permanent magnetic actuator vacuum circuit breaker operating mechanism, current sensor is selected CHB-200P type current sensor, CHB-200P type current sensor can gather 200A with interior electric current, meets the normal current margin of ZW45-12 type permanent magnetic actuator vacuum circuit breaker.
Contact pressure signal acquisition module adopts pressure sensor is measured the contact pressure of permanent magnetic actuator vacuum circuit breaker divide-shut brake process.Because the contact of the dynamic/static contact of permanent magnetic actuator vacuum circuit breaker connects form for clapping, pressure sensor is selected 3, is arranged on respectively the junction of ABC three phase isolated pull bar and touch spring, in order to the contact of equivalent measurement contact surface.Pressure sensor model is BS-602.
Arc control device radome electric potential signal acquisition module adopts electric field probe to measure, and electric field probe is arranged on vacuum extinction outdoor, and apart from vacuum extinction chamber outer wall 125mm, electric field probe is selected EF0391 type electric field probe.
As shown in Figure 2, CPU comprises signal conversion module and central processing module.The major function of CPU has: signal AD conversion, data processing, permanent magnetic actuator vacuum circuit breaker operation control, communication connection and data real-time storage.Signal conversion module major function is to realize the AD conversion of collection signal.Signal conversion module is carried out after AD conversion the signal of transducer collection, then signal is passed to central processing module.The data message amount gathering due to signal gathering unit is large, when data processing and storage, require high to central processing module, the central processing module of native system adopts dsp processor and arm processor composition dual-cpu structure, between two CPU, adopts dual port RAM to carry out exchanges data.Dsp processor is responsible for data processing and permanent magnetic actuator vacuum circuit breaker operation is controlled, and arm processor is responsible for communication connection and data real-time storage.Central processing module is the core of CPU, and the dsp processor in this module is selected the DSP core board of TMS320F28335 model, DSP core board the is integrated memory such as DSP minimum system and SRAM, FLASH; Arm processor adopts the embedded microcontroller of AT91RM9200 model; The model that dual port RAM adopts is IDT7134.In order to improve the precision of AD conversion, signal conversion module is selected ADS8364 chip, and this chip has low-power consumption, difference input, and high accuracy (sampling precision reaches 16-bit), the maximum 250kHz of sample frequency can change the features such as six road signals simultaneously.Because AD modular converter has difference input, design corresponding level shifting circuit and make it accept bipolarity input, expand the acquisition range of AD modular converter, 0V, to arrive+5V of expand to-5V of 5V acquisition range, can be ensured to the normal collection to negative signal.Because central processing module pin is accepted the following level of 3.3V, so need to add level shifting circuit between signal conversion module and central processing module, change-over circuit is mainly made up of two 74LVC16245A chips, input and output direction that can control valve pin by DIR, can directly connect the circuit of 3.3V and 5V.Level shifting circuit as shown in Figure 3.
As shown in Figure 4, communication unit adopts RS-485 communication module, realizes the communication with host computer unit.RS-485 adopts balance to send and differential received, therefore has the ability of common mode disturbances of inhibition, and bus transceiver has high sensitivity, can detect the voltage that is low to moderate 200mV, therefore signal transmission can be restored in addition at km, realizes telecommunication.
Host computer unit mainly can complete following function: demonstration, result, control, system setting, data management, operation and help.Host computer unit can be realized visual man-machine interactive functions such as showing curve, reference curve, chart control, data derivation, data query, data storing, system help, user edit, result printing on computers.The host computer cellular installation of present embodiment has the VC++ programming software of employing and SQL Server database.
Claims (8)
1. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker, is characterized in that: comprise signal gathering unit, CPU, communication unit and host computer unit;
Described signal gathering unit comprises surface magnetic field intensity of permanent magnet signal acquisition module, vibration signals collecting module, operating mechanism current signal collection module, contact pressure signal acquisition module and arc control device radome electric potential signal acquisition module;
Described CPU comprises signal conversion module and central processing module;
The output of the output of the surface magnetic field intensity of permanent magnet signal acquisition module of described signal gathering unit, the output of vibration signals collecting module, operating mechanism current signal collection module, the output of contact pressure signal acquisition module and the output of arc control device radome electric potential signal acquisition module are connected respectively the input of signal conversion module, the output of signal conversion module connects the input of central processing module, the output of central processing module is connected with the input of communication unit, and the output of communication unit is connected with host computer unit;
Described surface magnetic field intensity of permanent magnet signal acquisition module is arranged on permanent magnetic actuator vacuum circuit breaker inner permanent magnetic surface, vibration signals collecting module has multiple insulated tension poles that are arranged on respectively permanent magnetic actuator vacuum circuit breaker, tripping spring, release and permanent magnetic actuator vacuum circuit breaker pedestal, operating mechanism current signal collection module is arranged in the electric loop of permanent magnetic actuator vacuum circuit breaker operating mechanism, contact pressure signal acquisition module has multiple each phase insulated tension pole of permanent magnetic actuator vacuum circuit breaker and junctions of touch spring of being arranged on respectively, arc control device radome electric potential signal acquisition module is arranged on the vacuum extinction outdoor of permanent magnetic actuator vacuum circuit breaker.
2. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker according to claim 1, is characterized in that, the central processing module of described CPU adopts dsp processor and arm processor composition dual-cpu structure, adopts dual port RAM to connect between two CPU.
3. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker according to claim 1, is characterized in that, the surface magnetic field intensity of permanent magnet signal acquisition module of described signal gathering unit adopts Hall magnetic field probe.
4. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker according to claim 1, is characterized in that, the vibration signals collecting module of described signal gathering unit adopts vibrating sensor.
5. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker according to claim 1, is characterized in that, the operating mechanism current signal collection module of described signal gathering unit adopts current sensor.
6. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker according to claim 1, is characterized in that, the contact pressure signal acquisition module adopts pressure sensor of described signal gathering unit.
7. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker according to claim 1, is characterized in that, the arc control device radome electric potential signal acquisition module of described signal gathering unit adopts electric field probe.
8. the many signal acquiring systems of permanent magnetic actuator vacuum circuit breaker according to claim 1, is characterized in that, between the signal conversion module of described CPU and central processing module, are connected with level shifting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246674.5U CN203839267U (en) | 2014-05-14 | 2014-05-14 | Permanent magnetic mechanism vacuum circuit breaker multi-signal acquisition system |
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| CN201420246674.5U CN203839267U (en) | 2014-05-14 | 2014-05-14 | Permanent magnetic mechanism vacuum circuit breaker multi-signal acquisition system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158685A (en) * | 2015-06-25 | 2015-12-16 | 国家电网公司 | Detection method, apparatus and system for breaker |
| CN105242202A (en) * | 2015-10-29 | 2016-01-13 | 福建中网电气有限公司 | Breaker detection apparatus |
| 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 |
| CN113241284A (en) * | 2021-04-13 | 2021-08-10 | 山西长治贝克电气有限公司 | Intelligent permanent magnet vacuum circuit breaker for mine |
-
2014
- 2014-05-14 CN CN201420246674.5U patent/CN203839267U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158685A (en) * | 2015-06-25 | 2015-12-16 | 国家电网公司 | Detection method, apparatus and system for breaker |
| CN105242202A (en) * | 2015-10-29 | 2016-01-13 | 福建中网电气有限公司 | Breaker detection apparatus |
| 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 |
| CN113241284A (en) * | 2021-04-13 | 2021-08-10 | 山西长治贝克电气有限公司 | Intelligent permanent magnet vacuum circuit breaker for mine |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20160514 |