CN209298041U - Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount - Google Patents
Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount Download PDFInfo
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- CN209298041U CN209298041U CN201822173332.6U CN201822173332U CN209298041U CN 209298041 U CN209298041 U CN 209298041U CN 201822173332 U CN201822173332 U CN 201822173332U CN 209298041 U CN209298041 U CN 209298041U
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Abstract
The utility model discloses a kind of Fault Diagnosis for HV Circuit Breakers systems based on polymorphic amount, it is related to Fault Diagnosis for HV Circuit Breakers technical field, it is few for the device currently based on polymorphic amount Combining diagnosis, and because its volume is big, structure is complicated is easy to be disturbed, fail commonly used technical problem, using the division coil in high-voltage circuitbreaker, compensation Hall sensor is set on contact and major loop, optical displacement sensor, piezoelectric type acceleration sensor, electronic current sensor etc. is for detecting each data, then sample by high speed A/D conversion unit and data are sent to DSP digital signal processing unit, embedded industry control one-of-a-kind system is handled, final storage is to storage unit and show by display unit or be transmitted by communication unit to user terminal.Program structure is simple, small in size, light-weight, low in cost, easy to operate, and stability is good, convenient for assembling and maintenance.
Description
Technical field
The utility model relates to Fault Diagnosis for HV Circuit Breakers technical field, in particular to a kind of high pressure based on polymorphic amount
Circuit breaker failure diagnostic system.
Background technique
Can protection and control unit of the high-voltage circuitbreaker as electric system, reliably work and directly affect power train
The safe operation of system.International conference on large HV electric systems and Institute of Electric Power, China show about the survey of high-voltage circuitbreaker failure:
Most of failures (86% of 70% and minor failure of major failure) of breaker occur to relate generally to actuating machine in mechanical mechanism
Structure, monitoring arrangement and auxiliary device etc., thus the diagnosis for reinforcing mechanical state of high-voltage circuit breaker has important practical significance.It is high
When the dynamic/static contact that compresses switch is hit, mechanical oscillation movement can occur along with hitting, while this vibration sending sound wave can be in sky
It is propagated in gas.During high-voltage circuitbreaker switching, and it is same theoretical, only propagation medium is different.It is existing due to running
Field environment is complicated, and collected various types of signal is significantly interfered with, while the accuracy of single signal diagnosis is not also high, so
Using the homology and complementarity of polymorphic amount signal, polymorphic amount Combining diagnosis becomes the emerging research of Mechanical Failure of HV Circuit Breaker
Direction.Device currently based on polymorphic amount Combining diagnosis is few, and is easy to be disturbed because its volume is big, structure is complicated, not
It can be commonly used.
Summary of the invention
The utility model provides a kind of Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount, to solve currently based on
The device of polymorphic amount Combining diagnosis is few, and is easy to be disturbed because its volume is big, structure is complicated, fails commonly used skill
Art problem.
It is realized to solve the above problems, the utility model adopts the following technical solution:
A kind of Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount, including compensation Hall sensor, photo-electric position
Displacement sensor, piezoelectric type acceleration sensor, electronic current sensor, high speed A/D conversion unit, DSP Digital Signal Processing list
First, embedded industry control one-of-a-kind system, storage unit, display unit, push-button unit, communication unit；
The compensation Hall sensor is mounted on high-voltage circuitbreaker, the output end and height of the compensation Hall sensor
The first interface of fast A/D converter connects；
The optical displacement sensor is mounted on high-voltage circuitbreaker, the output end and height of the optical displacement sensor
The second interface of fast A/D converter connects；
The piezoelectric type acceleration sensor is mounted on high-voltage circuitbreaker, the output end and height of the piezoelectric type acceleration sensor
The third interface of fast A/D converter connects；
The electronic current sensor is mounted on high-voltage circuitbreaker, the output end and high speed of the electronic current sensor
4th interface of A/D converter connects；
The 5th interface of high speed A/D conversion unit is connect with DSP digital signal processing unit first interface, DSP number
Word signal processing unit second interface is connect with the embedded industry control one-of-a-kind system first interface；
The storage unit is connect with the second interface of the embedded industry control one-of-a-kind system；
The display unit is connect with the third interface of the embedded industry control one-of-a-kind system；
The push-button unit is connect with the 4th interface of the embedded industry control one-of-a-kind system；
The communication unit is connect with the 5th interface of the embedded industry control one-of-a-kind system.
Preferably, the compensation Hall sensor is arranged in the divide-shut brake wire loop of high-voltage circuitbreaker, for examining
Survey the division coil current of high-voltage circuitbreaker；
The optical displacement sensor is fixed on Driving Mechanism in HV Circuit Breaker, the position for detection contact
It moves；
The piezoelectric type acceleration sensor is arranged on Driving Mechanism in HV Circuit Breaker, is used for detection contact pressure；
On the secondary circuit for the main contact that high-voltage circuitbreaker is arranged in the electronic current sensor, for detecting breaker
Drop-out current；
The high speed A/D conversion unit includes field programmable gate array (FPGA) and analog/digital (A/D) sampling core
Piece, field programmable gate array (FPGA) directly control analog/digital (A/D) sampling A/D chip.
Preferably, the high speed A/D conversion unit sampling number per second is greater than 10M/SPS.
Preferably, the embedded industry control one-of-a-kind system uses industrial personal computer or man-machine interface (HMI)；
It is described include storage unit include high speed storing card, be used for memory system data；
The display unit includes liquid crystal display, for showing information；
The push-button unit includes matrix keyboard, for inputting information；
The communication unit includes the chip based on RS-485 agreement, for the communication between system.
The utility model beneficial effect includes: that structure is simple, small in size, light-weight, low in cost, easy to operate, is stablized
Property it is good, convenient for assembling and maintenance.
Detailed description of the invention
Fig. 1 is the general structure frame figure of the utility model；
Fig. 2 is the wiring schematic diagram of Hall sensor；
Fig. 3 is the interface circuit figure of communication unit.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, implement below in conjunction with the utility model
Fig. 1-3 in example, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described reality
Applying example is the utility model a part of the embodiment, instead of all the embodiments.Usually it is described and illustrated herein in the accompanying drawings
The detailed description of the embodiments of the present invention is not intended to limit the range of claimed invention, but only table
Show the selected embodiment of the utility model.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount, including compensation hall sensing
Device, optical displacement sensor, piezoelectric type acceleration sensor, electronic current sensor, high speed A/D conversion unit, DSP number
Signal processing unit, embedded industry control one-of-a-kind system, storage unit, display unit, push-button unit, communication unit.It is compensation suddenly
Your sensor is mounted on high-voltage circuitbreaker, and the of the output end of the compensation Hall sensor and high speed A/D conversion unit
The connection of one interface.Optical displacement sensor is mounted on high-voltage circuitbreaker, the output end and height of the optical displacement sensor
The second interface of fast A/D converter connects.Piezoelectric type acceleration sensor is mounted on high-voltage circuitbreaker, which accelerates
The output end of sensor is connect with the third interface of high speed A/D conversion unit.Electronic current sensor is mounted on high pressure open circuit
On device, the output end of the electronic current sensor is connect with the 4th interface of high speed A/D conversion unit.High speed A/D conversion
The 5th interface of unit is connect with DSP digital signal processing unit first interface, DSP digital signal processing unit second interface with it is embedding
Enter the connection of formula industry control one-of-a-kind system first interface.Storage unit is connect with the second interface of embedded industry control one-of-a-kind system；Display
Unit is connect with the third interface of embedded industry control one-of-a-kind system；4th interface of push-button unit and embedded industry control one-of-a-kind system
Connection；Communication unit is connect with the 5th interface of embedded industry control one-of-a-kind system.
Wherein, compensation Hall sensor is arranged in the divide-shut brake wire loop of high-voltage circuitbreaker, for detecting high pressure
The division coil current of breaker.Optical displacement sensor is fixed on Driving Mechanism in HV Circuit Breaker, for detecting
The displacement of contact.Piezoelectric type acceleration sensor is arranged on Driving Mechanism in HV Circuit Breaker, is used for detection contact pressure.Electronics electricity
Flow sensor is arranged on the secondary circuit of the main contact of high-voltage circuitbreaker, for detecting the drop-out current of breaker.At a high speed
A/D converter includes field programmable gate array (FPGA) and analog/digital (A/D) sampling A/D chip, field programmable gate
Array (FPGA) directly controls analog/digital (A/D) sampling A/D chip.High speed A/D conversion unit sampling number per second is greater than
10M/SPS.Embedded industry control one-of-a-kind system uses industrial personal computer or man-machine interface (HMI).It include high speed storing including storage unit
Card is used for memory system data.Display unit includes liquid crystal display, for showing information；
Push-button unit includes matrix keyboard, for inputting information.Communication unit includes the chip based on RS-485 agreement, is used
Communication between system.
Specifically, the reasons why above-mentioned unit selects and effect are:
High-voltage circuitbreaker in operation, due to the complexity of its internal structure, acts between each linkage part and exists
It is non-linear, while the non-linear property of the driving force of its internal drag, operating mechanism, these all make breaker become a complexity
Nonlinear dynamic response system, i.e., vibration signal have very strong non-linear, non-stationary, effective vibration signal time
It is short, usually arrived between hundreds of milliseconds tens of, thus usually select acceleration vibrating sensor monitoring vibration signal.Using pressure
When electric-type vibrating sensor measures vibration acceleration signal, sensor output charge amount is easily interfered by outside, thus is being sensed
Transmission line between device output and charge/voltage translation circuit needs to use coaxial line, to shield external interference.
Compensation Hall sensor.
In the division coil current monitoring to breaker, since electric current can not be linked into monitoring system, so needing
Corresponding sensor is selected to solve the problems, such as this.For the monitoring quantity, compensation Hall sensor has been selected herein, by right
Its monitoring and analysis can study the case where breaker operation mechanism is run, as whether movement mechanism has clamping stagnation, iron core to be
No there are idle strokes and load change situation etc., while can also substantially reflect secondary control loop integrality, are high pressure open circuit
The fault diagnosis of device and maintenance provide important information.
When to moving contact displacement monitoring, since monitored amount is non-electrical signal, it is difficult to be directly realized by these signals
Processing, so the present apparatus has selected optical displacement sensor, is translated into voltage signal to monitor.
In the drop-out current monitoring to breaker, corresponding sensor is also needed to realize, the present apparatus selects thus
Current sensor.
Traditional A/D sampling is usually to be controlled with CPU or single-chip microcontroller, has significant limitation, is generally only used for 10M/
SPS AD sampling below；And sample frequency is greater than 10M/SPS when being even up to 1G/SPS, must be directly controlled with high speed FPGA pair
The control that the data throughput of AD sampling A/D chip carries out, takes full advantage of the high-speed and high-efficiency advantage of FPGA device, to solve biography
The system problem slow using CPU or single-chip data interface rate, realizes the requirement of high speed output storage.
Data export from embedded industry control one-of-a-kind system, are then carried out data collected by 485 bus modes
Transmission, then show each supplemental characteristic such as coil current, vibration signal by host computer, store.Finally by long-range
Communication upload the data to host computer, realizes the shared of the regional grid operating system of monitoring data, display and transmission.RS-
485 use differential transfer balance mode, this feature ensure that 485 bus of RS- has the function of shielded electrical noise, not only pass
Defeated speed is fast (maximum reachable 10Mbps), and long transmission distance, and maximum transmission distance is up to 1200 m, and in addition RS-485 connects
Mouth allows to connect up to 128 transceivers in bus, that is, has multistation ability, can be connect in this way using single RS-485
Mouth easily measures multiple quantity of states.
System passes through compensation Hall sensor in monitoring breaker divide-shut brake coil current, by its current signal, will
Its current signal is converted into voltage signal, its voltage signal is converted to control unit institute by DSP digital signal processing unit
The input voltage that can be born, is converted accordingly into processor, then carries out corresponding data processing, then by corresponding
Keyboard carry out controlling corresponding monitoring quantity；Data storage can carry out the history and fault condition that breaker is run
Comparative analysis, in order to make reasonable judgement；The regional grid operation of the data of on-line monitoring is realized by bus communication
Shared, display and the transmission of system.
System is when moving contact displacement, vibration signal and the drop-out current to breaker monitor, with above-mentioned to breaker point
Closing coil current monitoring principle is similar.
The utility model beneficial effect includes: that structure is simple, small in size, light-weight, low in cost, easy to operate, is stablized
Property it is good, convenient for assembling and maintenance.
Claims (4)
1. a kind of Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount, which is characterized in that including compensation Hall sensor,
Optical displacement sensor, piezoelectric type acceleration sensor, electronic current sensor, high speed A/D conversion unit, DSP number letter
Number processing unit, embedded industry control one-of-a-kind system, storage unit, display unit, push-button unit, communication unit；
The compensation Hall sensor is mounted on high-voltage circuitbreaker, the output end and high speed of the compensation Hall sensor
The first interface of A/D converter connects；
The optical displacement sensor is mounted on high-voltage circuitbreaker, the output end and high speed of the optical displacement sensor
The second interface of A/D converter connects；
The piezoelectric type acceleration sensor is mounted on high-voltage circuitbreaker, the output end and high speed of the piezoelectric type acceleration sensor
The third interface of A/D converter connects；
The electronic current sensor is mounted on high-voltage circuitbreaker, the output end and high speed analog/digital of the electronic current sensor
4th interface of converting unit connects；
The 5th interface of high speed A/D conversion unit is connect with DSP digital signal processing unit first interface, DSP number letter
Number processing unit second interface is connect with the embedded industry control one-of-a-kind system first interface；
The storage unit is connect with the second interface of the embedded industry control one-of-a-kind system；
The display unit is connect with the third interface of the embedded industry control one-of-a-kind system；
The push-button unit is connect with the 4th interface of the embedded industry control one-of-a-kind system；
The communication unit is connect with the 5th interface of the embedded industry control one-of-a-kind system.
2. the Fault Diagnosis for HV Circuit Breakers system according to claim 1 based on polymorphic amount, it is characterised in that:
The compensation Hall sensor is arranged in the divide-shut brake wire loop of high-voltage circuitbreaker, for detecting high-voltage circuitbreaker
Division coil current；
The optical displacement sensor is fixed on Driving Mechanism in HV Circuit Breaker, the displacement for detection contact；
The piezoelectric type acceleration sensor is arranged on Driving Mechanism in HV Circuit Breaker, is used for detection contact pressure；
On the secondary circuit for the main contact that high-voltage circuitbreaker is arranged in the electronic current sensor, for detecting opening for breaker
Power-off stream；
The high speed A/D conversion unit includes field programmable gate array (FPGA) and analog/digital (A/D) sampling A/D chip,
Field programmable gate array (FPGA) directly controls analog/digital (A/D) sampling A/D chip.
3. the Fault Diagnosis for HV Circuit Breakers system according to claim 2 based on polymorphic amount, it is characterised in that:
The high speed A/D conversion unit sampling number per second is greater than 10M/SPS.
4. the Fault Diagnosis for HV Circuit Breakers system according to claim 1 based on polymorphic amount, it is characterised in that:
The embedded industry control one-of-a-kind system uses industrial personal computer or man-machine interface (HMI)；
The storage unit includes high speed storing card, is used for memory system data；
The display unit includes liquid crystal display, for showing information；
The push-button unit includes matrix keyboard, for inputting information；
The communication unit includes the chip based on RS-485 agreement, for the communication between system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822173332.6U CN209298041U (en) | 2018-12-24 | 2018-12-24 | Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount |
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| CN201822173332.6U CN209298041U (en) | 2018-12-24 | 2018-12-24 | Fault Diagnosis for HV Circuit Breakers system based on polymorphic amount |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123002A (en) * | 2019-12-18 | 2020-05-08 | 中国南方电网有限责任公司超高压输电公司南宁局 | Non-contact information acquisition health judgment system and method for series compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123002A (en) * | 2019-12-18 | 2020-05-08 | 中国南方电网有限责任公司超高压输电公司南宁局 | Non-contact information acquisition health judgment system and method for series compensation device |
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