CN109883482A - Acquire the system and method for high-voltage circuitbreaker electric current and vibration signal in GIS - Google Patents
Acquire the system and method for high-voltage circuitbreaker electric current and vibration signal in GIS Download PDFInfo
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- CN109883482A CN109883482A CN201910210447.4A CN201910210447A CN109883482A CN 109883482 A CN109883482 A CN 109883482A CN 201910210447 A CN201910210447 A CN 201910210447A CN 109883482 A CN109883482 A CN 109883482A
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Abstract
The disclosure discloses a kind of system for acquiring high-voltage circuitbreaker electric current and vibration signal in GIS, including acquisition module, signal conditioning module, A/D conversion and digital isolation module, central processing module, communication module and host computer.The disclosure further discloses a kind of method for acquiring high-voltage circuitbreaker electric current and vibration signal in GIS.The disclosure be suitable for three-phase separate-box type arrangement, not only can with split-phase operation but also can be electric-linked GIS breaker, can the divide-shut brake coil current of each phase of on-line checking breaker and the vibration signal of each phase, and real time output data is to host computer.
Description
Technical field
The disclosure belongs to electrical equipment online supervision and fault diagnosis field, and in particular to height is broken in a kind of acquisition GIS
The system and method for road device electric current and vibration signal.
Background technique
The security reliability of high-voltage circuitbreaker is related to the stable operation of entire electric system in GIS, with electric system
And the fast development of smart grid, it is stringenter to the reliability requirement of the power equipments such as GIS high-voltage circuitbreaker.According to statistics,
Mechanical breakdown accounts for the 80% of GIS high-voltage circuitbreaker.Therefore, the machine performance of high-voltage circuitbreaker in GIS is detected, is given in advance
Do well early warning, is of great significance to the stable operation of electric system.
Currently, monitoring on-line more mature for the mechanical property of high-voltage circuitbreaker in GIS both at home and abroad is to division brake cable
The measurement of the signals such as loop current, moving contact displacement, operating mechanism vibration, energy storage motor electric current, contact temperature, wherein actuating machine
The vibration signal and divide-shut brake coil current signal of structure are main monitoring signals.Vibration signal can reflect height in GIS and break
The action message of road device mechanical structure during entire divide-shut brake；Divide-shut brake coil current may determine that the operation of control loop
State.Existing commercialization vibration acquisition system price is high, and volume is larger, and acquisition system is difficult to divide-shut brake coil current
Signal, vibration signal synchronize acquisition and carry out Data Management Analysis.
The GIS breaker arranged for three-phase separate-box type, can not only operated with split-phase but also can be electric-linked with three-phase, needs to acquire
The individual electric current of three-phase and vibration signal judge its operating status, and to be more the absence of have targetedly state currently on the market
Signal pickup assembly.
Therefore, develop for can not only be operated with split-phase again can be electric-linked be used for high-voltage circuitbreaker in GIS
Signal acquiring system is necessary, it will help is found the potential potential faults of the type breaker ahead of time, is improved the breaker longevity
Life, promotes the stability of operation of power networks.
Summary of the invention
In view of the above deficiencies, the disclosure is designed to provide high-voltage circuitbreaker electric current and vibration letter in a kind of acquisition GIS
Number system and method, can not only measure single-phase electric current and vibration signal, but also the electric current and vibration signal of three-phase can be measured,
So as to improve the reliability of high-voltage circuitbreaker in GIS.
The purpose of the disclosure is achieved through the following technical solutions:
A kind of system acquiring high-voltage circuitbreaker electric current and vibration signal in GIS, comprising:
Acquisition module, for acquiring the electric current and vibration signal of high-voltage circuitbreaker in GIS；
Signal conditioning module, the current signal for acquiring the acquisition module are converted to voltage signal and amplify, with
And it is exported after being filtered to amplified voltage signal and vibration signal collected；
A/D conversion and digital isolation module, voltage signal and vibration for will be exported after signal conditioning module filtering
Dynamic signal is converted into digital signal and provides channel isolation for the transmission of digital signal；
Central processing module, for read in real time converted through the A/D and the digital signal of digital isolation module isolation simultaneously
It is stored；
Communication module is used for transmission the digital signal of the central processing module storage；
Host computer, the digital signal for the transmission of communication module described in real-time display.
Preferably, the acquisition module includes:
Hall current sensor, for acquiring the current signal of divide-shut brake coil in breaker；
Vibrating sensor, for acquiring the vibration signal of breaker.
Preferably, the signal conditioning module includes:
Current-voltage conversion and amplifying circuit, for converting voltage signal for current signal, and to the voltage after conversion
Signal amplifies；
Voltage signal quadravalence Butterworth low pass wave circuit, for filtering out in the voltage signal by current signal conversion
High-frequency signal interference；
Vibration signal quadravalence Butterworth low pass wave circuit, for filtering out the high-frequency signal in vibration signal collected
Interference.
Preferably, the A/D conversion and digital isolation module include:
Sampling ADC, for converting number for the voltage signal exported after signal conditioning module filters and vibration signal
Signal；
Digital isolating chip, for providing transmission channel isolation for digital signal.
Preferably, the central processing module includes single-chip microcontroller, is sentenced for the downloading of sampling routine, signal sampling condition
Disconnected and signal acquisition, storage and transmission.
Preferably, the communication module includes:
Serial ports turns 485 chip SP3485, for converting the output of RS485 bus by serial ports output for the way of output of signal
And inhibit common mode interference；
Build-out resistor for impedance matching and improves the anti-interference ability of RS485 bus, stability.
The disclosure also provides a kind of method for acquiring high-voltage circuitbreaker electric current and vibration signal in GIS, includes the following steps:
S1: the electric current and vibration signal of high-voltage circuitbreaker in acquisition GIS；
S2: being converted to voltage signal for current signal collected and amplify, and to amplified voltage signal and is acquired
Vibration signal filtering after export；
S3: digital signal is converted by the voltage signal exported after filtering and vibration signal；
S4: it reads the digital signal and is stored；
S5: the stored digital signal of transmission and real-time display.
Preferably, in step S1, the electric current and vibration signal pass through Hall current sensor and vibrating sensor respectively
Acquisition.
Preferably, in step S2, the amplified voltage signal and vibration signal collected are believed by voltage respectively
Number quadravalence Butterworth low pass wave circuit and the filtering of vibration signal quadravalence Butterworth low pass wave circuit.
Preferably, in step S5, the digital signal passes through host computer real-time display.
Compared with prior art, disclosure bring has the beneficial effect that
1, the disclosure is suitable for the GIS breaker that three-phase separate-box type is arranged, can not only be operated with split-phase but also can be electric-linked；
2, the disclosure can the divide-shut brake coil current of each phase of on-line checking breaker and the vibration signal of each phase, and
Real time output data meets the needs of smart grid to host computer；
As long as 3, have in the disclosure all the way current signal meet activation threshold value condition can real-time synchronization acquire three road electric currents
The operation of signal and vibration signal, either split-phase or electric-linked operation, electric current required for can collecting and vibration letter
Number, effective data are provided with fault diagnosis system for data analysis.
Detailed description of the invention
Fig. 1 is the system structure diagram of high-voltage circuitbreaker electric current and vibration signal in a kind of acquisition GIS of the disclosure；
Fig. 2 is current-voltage conversion and the voltage amplifier circuit schematic diagram in Fig. 1 in signal conditioning module；
Fig. 3 is that 4 rank Butterworths of the voltage signal that the electric current of signal conditioning module in Fig. 1 is converted into and vibration signal are low
Bandpass filter circuit schematic diagram；
Fig. 4 is A/D conversion and digital isolation module circuit diagram in Fig. 1；
Fig. 5 is communication module circuitry schematic diagram in Fig. 1.
Specific embodiment
It is described in further detail below with reference to specific embodiment and attached drawing 1 to technical solution of the Fig. 5 to the disclosure,
The embodiment is only section Example, not as the restriction to the disclosure.
Referring to Fig. 1, a kind of system for acquiring high-voltage circuitbreaker electric current and vibration signal in GIS, comprising:
Acquisition module, for acquiring the electric current and vibration signal of high-voltage circuitbreaker in GIS；
Signal conditioning module, the current signal for acquiring the acquisition module are converted to voltage signal and amplify, with
And it is exported after being filtered to the voltage signal and vibration signal collected；
A/D conversion and digital isolation module, voltage signal and vibration for will be exported after signal conditioning module filtering
Dynamic signal is converted into digital signal and provides channel isolation for the transmission of digital signal；
Central processing module, for read in real time converted through the A/D and the digital signal of digital isolation module isolation simultaneously
Storage and transmission；
Communication module is used for transmission the digital signal of the central processing module storage；
Host computer, the digital signal for the transmission of communication module described in real-time display.
So far, above-described embodiment completely discloses technical solution of the present invention.The present embodiment can either be adopted in real time online
The single phase winding electric current and vibration signal for collecting the circuit-breaker switching on-off moment can also acquire three-phase coil electric current and three-phase vibration letter
Number, there is versatility；The GIS breaker arranged suitable for three-phase separate-box type, can not only operated with split-phase but also can be electric-linked, tool
There is specificity；The signal of the present embodiment acquisition can efficiently filter out live noise jamming, improve the letter of signal by filtering processing
It makes an uproar ratio；The data of acquisition can real-time Transmission to host computer, provide real time data for data analysis and circuit breaker failure diagnosis, have
There is real-time.
In another embodiment, the acquisition module includes:
Hall current sensor, for acquiring the current signal of divide-shut brake coil in breaker；
Vibrating sensor, for acquiring the vibration signal of breaker.
In the embodiment, installed respectively on the shell of each phase (A phase, B phase, C phase can be denoted as) in breaker three-phase
Vibrating sensor and Hall current sensor are respectively used to the vibration signal of acquisition breaker and acquire each phase operating mechanism line
The electric current of circle.
In another embodiment, the signal conditioning module includes:
Current-voltage conversion and amplifying circuit, for converting voltage signal for current signal, and to the voltage after conversion
Signal amplifies；
Voltage signal filter circuit, for filtering out the high-frequency signal interference in the voltage signal by current signal conversion；
Vibration signal filter circuit, for filtering out the interference of the high-frequency signal in vibration signal collected.
In the embodiment, vibration signal output is originally the voltage signal of 0-5V, therefore does not need to convert it and put
Greatly.Electric current is converted into after voltage signal as 0-1.5V, is amplified three times by precision instrument amplifier INA114AU and becomes 0-
4.5V is conducive to improve sampling precision.The filter circuit of voltage signal and vibration signal that electric current is converted to is quadravalence Bart
Butterworth filter circuit is capable of the interference of effective filtering high frequency signal.The cutoff frequency of the identical only filtering of the two working principle is not
Together, the frequency of electric current is converted to voltage signal filtering is 60Hz, and the low-pass filtering of vibration signal is according to the vibration of practical breaker
Dynamic frequency may be configured as 15kHz or 20kHz.
In another embodiment, the A/D conversion and digital isolation module include:
Sampling ADC, for converting number for the voltage signal exported after signal conditioning module filters and vibration signal
Signal；
Digital isolating chip, for providing transmission channel isolation for digital signal.
In the embodiment, the input terminal of ADC acquisition chip ADC128S102 is converted with through filtered three-phase current respectively
Voltage signal and three-phase vibration signal connection, amount to 6 tunnels input.The output of sampling ADC is spi bus mode, the output of ADC
Digital isolating chip MAX14850 is accessed, provides channel isolation for the output signal access single-chip microcontroller of ADC.
In another embodiment, the central processing module includes:
Single-chip minimum system, for the downloading of sampling routine, the judgement of signal sampling condition and the acquisition of signal, storage
And transmission.
In the embodiment, single-chip microcontroller selects STM32F407, and minimum system also includes crystal oscillating circuit, downloader circuit, electricity
The parts such as source, reset circuit.Single-chip microcontroller receives the digital signal after digital isolating chip MAX14850 isolation, when the electricity of acquisition
Stream signal is when meeting threshold value, store to the 6 paths data met after threshold requirement in 200ms and real by communication module
When be sent to host computer.
In another embodiment, the communication module includes:
Serial ports turns 485 chip SP3485, for converting the output of RS485 bus by serial ports output for the way of output of signal
And inhibit common mode interference；
Build-out resistor for impedance matching and improves the anti-interference ability of RS485 bus, stability.
In the embodiment, single-chip microcontroller is connect by the signal wire that serial ports exports and converts the input of chip SP3485 in communication mode
End, by the transceiver mode of the pin PG8 control 485 of single-chip microcontroller；Impedance matching resistor is accessed at the output both ends of 485 buses, is mentioned
The anti-interference ability of high 485 bus, stability.
Fig. 2 is the structural schematic diagram of the current-voltage conversion and voltage amplifier circuit in signal conditioning module.Such as Fig. 2 institute
Show, the current signal of Hall current sensor acquisition is converted into voltage signal by sampling resistor R17, and sampling resistor R17 connects
It is connected to the pin 4 and pin 5 of precision instrument amplifier INA114AU, and pin 4 is grounded；Capacitor C26 is decoupling capacitor；TVS pipe
For inhibiting the surge pulse power being likely to occur；Resistance R12 is connected to the pin 2 and pin 15 of INA114AU, for adjusting
Gain amplifier.The reference end of INA114AU is grounded, and output detection feedback interface pin 12 is connected on delivery outlet pin 11.
Fig. 3 is the knot of the quadravalence Butterworth low pass wave circuit of the voltage signal and vibration signal in signal conditioning module
Composition.As shown in figure 3,4 rank Butterworth low pass wave circuits are made of 22 rank low-pass filters cascades.OPA2227UA core
There are two operational amplifiers in piece.Resistance R13, R14, capacitor C24, C27 and operational amplifier U3A constitute a step low-pass
Filter.The one end resistance R13 is connected with the electric current conversion voltage being amplified, and the other end is connected with resistance R14 and capacitor C24, electricity
Hold the C24 other end to be connected with the output pin 1 of the reverse input end pin 2 of operational amplifier U3A and operational amplifier, resistance
The other end of R14 is connected with the positive input pin 3 of one end of capacitor C27 and U3A, the other end ground connection of capacitor C27.Electricity
Hinder R15, R16, capacitor C25, C28 and operational amplifier U3B constitute another second-order low-pass filter, the one end resistance R15 with
The output end of prime filter circuit is connected, and the other end is connected with resistance R16 and capacitor C25, the capacitor C25 other end and operation amplifier
The reverse input end pin 6 of device U3B is connected with the output pin 7 of operational amplifier, the other end and capacitor C28 of resistance R16
One end and the positive input pin 3 of U3B be connected, the other end of capacitor C28 ground connection.Two 2 rank low-pass filters cascades
4 rank Butterworth low pass wave circuits of composition can effectively inhibit the interference of high-frequency signal, by adjusting resistance value and electricity
The filter circuit of the frequency range of the adjustable low-pass filtering of capacitance, vibration signal and current signal using different resistance value and
Capacitance.
Fig. 4 is the circuit structure diagram of A/D conversion and digital isolation module.As shown in figure 4, the voltage letter of three road electric currents conversion
Number the pin 4,5,6 of ADC chip ADC128S102 is connected to by filter circuit output；Three road vibration signals pass through filter circuit
Output is connected to the pin 7,8,9 of ADC chip ADC128S102；The another two-way sampling pin 10,11 of ADC128S102 is grounded；
2 and 13 pins of ADC128S102 connect+5V power supply, and 3 and 12 with connecing simulation respectively and digitally.MAX14850 chip is as number
Isolating chip, pin 16 connect+5V power supply, and pin 1 connects the 3.3V voltage being isolated with+5V, and pin 9 and pin 8 connect the number of isolation
Ground.ADC128S102 is exported using SPI, and the PA4 of central processing module STM32F407 connects MAX14850 pin 7, by number every
From rear, the pin 10 of MAX14850 is accessed from device enable signal ADC128S102 pin 1, these pins are drawn in the disclosure
It is high；The PA5 of central processing module STM32F407 connects MAX14850 pin 2, by number isolation after, clock signal by
The pin 15 of MAX14850 accesses the pin 16 of ADC128S102；The PA7 of central processing unit STM32F407 meets MAX14850 and draws
Foot 3, after number isolation, the output of main device data is inputted from device data and is accessed by the pin 14 of MAX14850
The pin 14 of ADC128S102；The PA6 of central processing module STM32F407 connects MAX14850 pin 4, after number isolation,
The input of main device data is accessed the pin 13 of MAX14850 from device data output by the pin 15 of ADC128S102.
Fig. 5 is the circuit structure diagram of communication module.As shown in figure 5, turning RS485, three road electric currents and three Lu Zhen by serial ports
Dynamic signal data is transferred to host computer progress data storage, graphical display, feature extraction and failure in a manner of 485 buses and examined
It is disconnected.The serial ports receiving terminal PA3 of central processing module STM32F407 connects the pin 1 of SP3485 chip, the PG8 pin of STM32F407
The control transmitting-receiving of pin 2,3 of SP3485 is connect, the serial ports transmitting terminal PA3 of STM32F407 connects the pin 4 of SP3485 chip；SP3485
Pin 8 connect 3.3V power supply, pin 5 is grounded, and C201 is that electrical power by-pass capacitor is connected across between power supply and ground；R201 is pull-up electricity
Resistance, connects between 3.3V power supply and pin 6；R200 is pull down resistor, is connect between ground and pin 7；Resistance R202 is matching electricity
Resistance, connects between pin 6,7, improves anti-interference ability, the stability of 485 buses.
In another embodiment, the disclosure additionally provides high-voltage circuitbreaker electric current and vibration signal in a kind of acquisition GIS
Method includes the following steps:
S1: the electric current and vibration signal of high-voltage circuitbreaker in acquisition GIS；
In the step, vibrating sensor is installed in each phase, the opening/closing operation mechanism coil current of each phase is penetrated
Corresponding Hall current sensor；Divide-shut brake coil current signal is converted into 0-1.5V voltage signal by sampling resistor.
S2: being converted to voltage signal for current signal collected and amplify, and to amplified voltage signal and is acquired
Vibration signal filtering after export；
In the step, which is accessed into amplifying circuit, corresponding voltage signal is amplified 3 times, i.e. 0-4.5V is mentioned
High data sampling precision.After voltage signal is amplified, voltage is filtered out by quadravalence Butterworth low pass wave circuit and vibration is believed
High-frequency interferencing signal in number.
S3: digital signal is converted by the voltage signal exported after filtering and vibration signal；
In the step, the voltage signal of electric current conversion and vibration voltage signal are sent into A/D conversion module, are converted into number
Signal, digital signal enter single-chip microcontroller by digital isolating chip；
S4: it reads the digital signal and is stored；
In the step, when the threshold triggers condition for having a phase current to reach setting in three-phase current, single-chip microcontroller is acquired simultaneously
6 road signal datas in 200ms are stored, and are communicated by way of serial ports or 485 buses with host computer completion, coil electricity is completed
The data-transformation facility of stream and vibration signal.
S5: the stored digital signal of transmission and real-time display.
Although being described above in conjunction with embodiment of the attached drawing to the disclosure, the disclosure is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.Those skilled in the art under the enlightenment of this specification and are not departing from disclosure scope of the claimed protection
In the case where, a variety of forms can also be made, these belong to the column of disclosure protection.
Claims (10)
1. the system of high-voltage circuitbreaker electric current and vibration signal in a kind of acquisition GIS, comprising:
Acquisition module, for acquiring the electric current and vibration signal of high-voltage circuitbreaker in GIS；
Signal conditioning module, the current signal for acquiring the acquisition module are converted to voltage signal and amplify and right
It is exported after amplified voltage signal and vibration signal collected filtering；
A/D conversion and digital isolation module, for believing the voltage signal exported after signal conditioning module filtering and vibration
It number is converted into digital signal and provides channel isolation for the transmission of digital signal；
Central processing module is converted and the digital signal of digital isolation module isolation and progress for reading in real time through the A/D
Storage；
Communication module is used for transmission the digital signal of the central processing module storage；
Host computer, the digital signal for the transmission of communication module described in real-time display.
2. system according to claim 1, which is characterized in that preferred, the acquisition module includes:
Hall current sensor, for acquiring the current signal of divide-shut brake coil in breaker；
Vibrating sensor, for acquiring the vibration signal of breaker.
3. system according to claim 1, which is characterized in that the signal conditioning module includes:
Current-voltage conversion and amplifying circuit, for converting voltage signal for current signal, and to the voltage signal after conversion
It amplifies；
Voltage signal quadravalence Butterworth low pass wave circuit, for filtering out the high frequency in the voltage signal by current signal conversion
Signal interference；
Vibration signal quadravalence Butterworth low pass wave circuit, it is dry for filtering out the high-frequency signal in vibration signal collected
It disturbs.
4. system according to claim 1, which is characterized in that the A/D conversion and digital isolation module include:
Sampling ADC, for converting digital signal for the voltage signal exported after signal conditioning module filters and vibration signal；
Digital isolating chip, for providing transmission channel isolation for digital signal.
5. system according to claim 1, which is characterized in that the central processing module includes single-chip minimum system,
For the downloading of sampling routine, the judgement of signal sampling condition and acquisition, storage and the transmission of signal.
6. system according to claim 1, which is characterized in that the communication module includes:
Serial ports turns 485 chip SP3485, exports and presses down for converting RS485 bus by serial ports output for the way of output of signal
Common mode interference processed；
Build-out resistor for impedance matching and improves the anti-interference ability of RS485 bus, stability.
7. the method for high-voltage circuitbreaker electric current and vibration signal, includes the following steps: in a kind of acquisition GIS
S1: the electric current and vibration signal of high-voltage circuitbreaker in acquisition GIS；
S2: being converted to voltage signal for current signal collected and amplify, to amplified voltage signal and vibration collected
It is exported after dynamic signal filtering；
S3: digital signal is converted by the voltage signal exported after filtering and vibration signal；
S4: it reads the digital signal and is stored；
S5: the stored digital signal of transmission and real-time display.
8. the method according to the description of claim 7 is characterized in that the electric current and vibration signal pass through respectively in step S1
Hall current sensor and vibrating sensor acquisition.
9. the method according to the description of claim 7 is characterized in that in step S2, the amplified voltage signal and adopted
The vibration signal of collection passes through voltage signal quadravalence Butterworth low pass wave circuit respectively and vibration signal quadravalence Butterworth is low
Bandpass filter circuit filtering.
10. the method according to the description of claim 7 is characterized in that the digital signal is real-time by host computer in step S5
Display.
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| CN110568252A (en) * | 2019-08-29 | 2019-12-13 | 桂林电子科技大学 | four-channel double-gear interface control circuit current detection system |
| CN110658008A (en) * | 2019-09-23 | 2020-01-07 | 红相股份有限公司 | Preliminary diagnosis method for three-phase box-separated GIS mechanical fault |
| CN113568330A (en) * | 2020-04-28 | 2021-10-29 | 北京振兴计量测试研究所 | Modularized dynamic signal acquisition device and method suitable for real-time data storage |
| CN113671362A (en) * | 2021-08-09 | 2021-11-19 | 武汉长海电气科技开发有限公司 | Control detection system of circuit breaker |
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| 许大宇等: "高压断路器状态在线监测系统研究", 《南京工程学院学报(自然科学版)》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568252A (en) * | 2019-08-29 | 2019-12-13 | 桂林电子科技大学 | four-channel double-gear interface control circuit current detection system |
| CN110658008A (en) * | 2019-09-23 | 2020-01-07 | 红相股份有限公司 | Preliminary diagnosis method for three-phase box-separated GIS mechanical fault |
| CN113568330A (en) * | 2020-04-28 | 2021-10-29 | 北京振兴计量测试研究所 | Modularized dynamic signal acquisition device and method suitable for real-time data storage |
| CN113671362A (en) * | 2021-08-09 | 2021-11-19 | 武汉长海电气科技开发有限公司 | Control detection system of circuit breaker |
| CN113671362B (en) * | 2021-08-09 | 2024-07-02 | 武汉长海电气科技开发有限公司 | Control detection system of circuit breaker |
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Application publication date: 20190614 |