CN104049185B - A kind of Portable PD On-Line detecting system and method - Google Patents
A kind of Portable PD On-Line detecting system and method Download PDFInfo
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- CN104049185B CN104049185B CN201410219147.XA CN201410219147A CN104049185B CN 104049185 B CN104049185 B CN 104049185B CN 201410219147 A CN201410219147 A CN 201410219147A CN 104049185 B CN104049185 B CN 104049185B
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Abstract
The present invention relates to detection monitoring field, a kind of Portable PD On-Line detecting system and method are particularly related to, including：UHF detecting signal units, signal conversion unit, Signal Pretreatment unit, data acquisition unit, IED system units.UHF detecting signal units are installed at GIS device insulator, for monitoring GIS device built-in electrical insulation state, Signal Pretreatment unit is filtered to signal by FHSS technologies, to data acquisition unit after amplification, conditioning, by data acquisition unit signal is collected after by wireless network send to IED system units carry out comprehensive descision, assessment, early warning are made to the insulation status of GIS device, while installing the real-time monitoring that APP application software realizes data using mobile device.It provides a kind of execute-in-place rational in infrastructure, multiple functional, simplified, meets the detection means for GIS device insulation status of execute-in-place custom.
Description
Technical field
The present invention relates to detection monitoring field, a kind of Portable PD On-Line detecting system and method are particularly related to.
Background technology
Gas-insulated provision for sealing GIS is the power equipment that transmission of electricity and field of power transformation suffer from extensive and important application.By
All it is enclosed in GIS whole elements in metal-back, the more conventional transformer station of its initial failure is more difficult to find, the damage that failure is caused
Lose also bigger.In order to understand GIS running statuses exactly, potential faults are found and eliminated in time, high pressure GIS is carried out
Detection is necessary.It is the basis of realizing GIS repairs based on condition of component to carry out detection to GIS, can reduce because periodic maintenance and caused by
Loss and improve transformer station automatization level.
Partial Discharge Detecting Technology be find the potential insulation defect of high-tension apparatus it is most sensitive, most effectively a UHF it is online
Detection technique, is, using most there is successful one kind, to be widely used in power transformer, GIS, power cable etc. in local detection method
The partial discharge electro-detection of high voltage electric equipment.
Illustrated by taking GIS as an example, superfrequency method, detection frequency band is between 300MHz-1500MHz, with anti-interference energy
The features such as power is strong, sensitivity is high, and it is this not in contact with formula for secondary device and
Safer for testing staff, system architecture is simple.All parts of the country pass through superfrequency on-line checking and band in recent years
Electrical testing is found that a large amount of GIS internal flaws cases, as the current most important detection means in GIS on-line checkings field.
Frequency hopping (Frequency-Hopping Spread Spectrum； FHSS)
At the beginning of the 90's, occur in that based on fuzzy（Fuzzy) regular frequency hopping pattern generator.In such systems, by
Fuzzy rule, primary condition and sampling configuration carry out the output sequence of decision systems jointly.As long as listener-in does not know fuzzy rule
Then, any one of primary condition, sampling configuration three, just the unpredictable output frequency to system, thus just improves and is
The anti-eavesdropping capability and antijamming capability of system.The frequency hopping code sequence that fuzzy frequency hopping is provided compared with traditional frequency hopping code sequence more
Uniformly, also it is more difficult to prediction.
The end of the nineties is it is proposed that chaos（Chaotic) frequency hop sequences.Its basic thought is the symbol by chaos system
Number sequence generates frequency hop sequences.A nonlinear mapping relations, primary condition are determined in this chaos system and is mixed
Ignorant rule, three uniquely determines an output sequence.The Chaotic FH Sequence thereby determined that embodies good uniformity, low section
Obtain probability, good Hamming correlation property and with the preferable range of linearity.
In existing DS/CDMA systems, the problem of near-far interference is one very big.Because high-power signal is only at certain
Near-far interference is produced in individual frequency, it is then unaffected when carrier frequency jumps to another frequency, therefore frequency-hopping system do not have
Obvious near-far interference, this causes its readily available application and development in mobile communications.In digital cellular mobile communication systems
In, if mutually orthogonal frequency hopping pattern synchronising frequency hopping is used between link, or using the asynchronous jump of frequency hopping pattern of low cross-correlation
Frequently, the interference between link can be caused to be completely eliminated or substantially eliminate, it is significant to the capacity of raising system.In addition,
Frequency hopping is instantaneous narrowband systems, and the distribution of its frequency is with very big flexibility, under conditions of existing frequency resource is very crowded,
This point is significant.
The multiple access performance of frequency hopping has very important significance for networking.Canadian Laval universities are proposed in fiber optic network
Middle application fast frequency hopping technology.The system substitutes the frequency synthesizer in traditional frequency-hopping system using Bragg gratings, and hop rate reaches
The 10G orders of magnitude.System is in 30 users, and bit error rate is under conditions of 10-9, data rate is 500Mb/s.It is non-with using
The fiber optic network of relevant DS/CDMA technologies is compared, while having the user of identical quantity in use, the bit of FFH/CDMA systems
The bit error rate is substantially better than DS/CDMA systems.
Local discharge detection device used at present, detection speed is slow, occupancy human resources are big, the specialty of on-the-spot test
Property, complexity is high, line is complicated, signal attenuation is big, interference is strong, on-site personnel safety coefficient is low, it is impossible to adjust frequency range
The frequency range of amplifilter, so Site Detection is voluntarily carried out for operation department has certain difficulty.
Following patent is illustrated
1. application publication number (CN103605061) fits through signal processing unit processes using antenna and alignment sensor
It is final that discharge signal is shown by LCD display screens.Its shortcoming is that system can not carry out signal analysis and and early warning to discharge signal
Decay more than processing, signal converting is big, detection speed is slow.
2. application publication number（CN102628916A）System includes superfrequency reception antenna, and superfrequency reception antenna passes through
Coaxial cable is connected with bandpass filter, and bandpass filter is connected with amplifier, amplifier connection digital oscilloscope, digital oscillography
Device is connected with industrial computer, in industrial computer be provided with monitoring system processing module, for detecting, in real time show, calculate shelf depreciation
Position and save historical data.Shortcoming is：Connecting line and joint is excessive, signal attenuation big, it is higher using oscillograph cost, and
In-convenience in use.
The content of the invention
It is an object of the invention to provide a kind of Portable PD On-Line detecting system and method, by entering to GIS device
Row Partial Discharge Detection, finds the insulation defect inside GIS, it is to avoid the generation of the major accident caused by insulation degradation in advance.
The invention provides a kind of Portable PD On-Line detecting system, including for detecting the insulation defect inside GIS
UHF detecting signal units, changed for the signal that is amplified, filters to the signal that UHF detecting signal units are detected single
Member and Signal Pretreatment unit, for signal after processing is collected data acquisition unit, for being integrated to data
The IED system units of judgement, the signal that UHF detecting signal units are detected is amplified by signal conversion unit to signal,
Filtering, and the signal after processing is sent to Signal Pretreatment unit, Signal Pretreatment unit enters line number to the signal after processing
Send data acquisition unit to according to analysis and arrangement, by data acquisition unit signal is collected after to IED system units carry out
Comprehensive descision, assessment, early warning are made to the insulation status of GIS device, while being monitored in real time to data.
The signal conversion unit is made up of amplifier, bounce frequency filter and radio receiving transmitting module one, and the signal is located in advance
Reason unit is made up of radio receiving transmitting module two and microprocessor one；The data acquisition unit is by high speed data acquisition system and Wei Chu
Reason device two is constituted；The signal that UHF detecting signal units are detected passes to signal conversion unit, and signal conversion unit is obtaining
Signal amplifies through amplifier, then by bounce frequency filter filter after Signal Pretreatment unit passed to by radio receiving transmitting module one
In radio receiving transmitting module two, two signals received of radio receiving transmitting module pass to microprocessor one, and to carry out data analysis whole
Reason, microprocessor one sends the signal after analysis and arrangement to the high speed data acquisition system in data acquisition unit, high-speed data
Collector sends the progress signal of microprocessor two to and collected after being acquired to the signal received.
The UHF detecting signal units are detected by superfrequency detection mode；The Signal Pretreatment unit passes through
FHSS technologies carry out region filtering and realize signal acquisition.
By data acquisition unit signal is collected after IED system units sent to by wireless network integrate and sentence
It is disconnected.
The wireless network is any one in bluetooth, Wifi, frequency hopping communication three.
The Signal Pretreatment unit is fixed in same housing with data acquisition unit.
The data that described IED system units gather to data acquisition unit, collect are detected and determine that signal reaches
To setting threshold value when export pre-warning signal, the pre-warning signal exported by sound, light, active relay, it is passive after
Electrical equipment output, wireless network, mobile network and computer applied algorithm carry out early warning.
Described UHF detecting signal units are connected with signal conversion unit by coaxial cable, signal conversion unit and letter
Number pretreatment unit is connected by wireless receiving and dispatching mode, is electrically connected between Signal Pretreatment unit and data acquisition unit, signal
Pretreatment unit, data acquisition unit and IED system units are connected by wireless receiving and dispatching mode.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described.
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of signal conversion unit, Signal Pretreatment unit and data acquisition unit.
In figure,
1st, UHF detecting signal units；
2nd, signal conversion unit；
3rd, Signal Pretreatment unit；
4th, data acquisition unit；
5th, IED system units.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, GIS device insulation status detection means is by UHF detecting signal units 1, signal conversion unit 2, letter
Number pretreatment unit 3, data acquisition unit 4, the part of IED system units 5 five composition, UHF detecting signal units 1 are installed on GIS
Apparatus insulated sub- place, it is pre- that the signal that UHF detecting signal units 1 are detected sends signal to after being handled by signal conversion unit 2
Processing unit 3, Signal Pretreatment unit 3 is filtered to signal, is amplified, is gathered, and signal is converged by data acquisition unit 4
The General Logistics Department is to IED（Intelligent electronic device）System unit 5 carries out comprehensive descision, and assessments, in advance is made to the insulation status of GIS device
It is alert, while being monitored in real time to data.
The UHF detecting signal units 1 are to use superfrequency detection mode；The Signal Pretreatment unit 3 passes through FHSS
（Frequency-Hopping Spread Spectrum frequency hoppings）Technology carries out region filtering and realizes that signal high precision is gathered.
By data acquisition unit 4 signal is collected after IED system units 5 sent to by wireless network integrated
Judge.
The wireless network includes：Bluetooth, Wifi, frequency hopping communication.
The Signal Pretreatment unit 3 is fixed in same housing with data acquisition unit 4.
The data that described IED system units 5 gather to data acquisition unit 4, collect are detected and determine signal
Pre-warning signal is exported during the threshold value for reaching setting, and assessment report is provided by the processor in IED system units 5.
Described UHF detecting signal units 1 are crossed coaxial cable with signal conversion unit 2 and are connected, signal conversion unit 2 and letter
Number pretreatment unit 3 is connected by wireless receiving and dispatching mode, is electrically connected between Signal Pretreatment unit 3 and data acquisition unit 4, is believed
Number pretreatment unit 3, data acquisition unit 4 are connected with IED system units 5 by wireless receiving and dispatching mode.
UHF detecting signal units 1 are installed at GIS device insulator, for monitoring the shelf depreciation letter inside GIS device
Number, local discharge signal detected by UHF detecting signal units 1 through signal conversion unit 2 be converted to wireless signal send to
Signal Pretreatment unit 3, signal reaches data acquisition unit 4 after being nursed one's health through Signal Pretreatment unit 3, by data acquisition unit pair
Data reach IED system units 5 after being collected, progress detects that measured value is contrasted with alarming value, passes through the place in IED
Reason device makes assessment, early warning to the insulation status of GIS device.
As shown in Fig. 2 the signal conversion unit 2 is made up of amplifier, bounce frequency filter and radio receiving transmitting module one；Institute
Signal Pretreatment unit 3 is stated to be made up of radio receiving transmitting module two and microprocessor one；The data acquisition unit 4 is by high-speed data
Collector and microprocessor two are constituted, and the signal that UHF detecting signal units 1 are detected passes to signal conversion unit 2, amplified
Device amplifies, and passes to radio receiving transmitting module two by radio receiving transmitting module one after bounce frequency filter filtering, signal is through wireless receipts
Hair module two passes to microprocessor one, and the signal after processing enters microprocessor two through high speed data acquisition system and carries out signal remittance
Always.
The signal conversion unit uses company model FB-SCU；Signal Pretreatment unit uses company model FB-
SPU；Data acquisition unit is realized using company model FB-DAU.
Coprocessor FPGA models EP3C25E144I8N in the microcontroller；Processor MCU is using ST companies
STM32F427。
Described IED system units need to first judge IED systems before assessment, early warning is made to the insulation status of GIS device
Unit reaches the threshold value of setting.
A kind of partial discharge detecting system localization method,
1. pair test equipment installs multiple UHF detecting signal units.
2. detect that the time of point of discharge is different by UHF detecting signal units, to determine discharge position.
A kind of partial discharge detecting system data processing method, is entered by expert diagnosis software to the discharge signal detected
Row data analysis and electric discharge type processing.
Typical discharges database is set up by simulating typical shelf depreciation, and expert diagnosis software is to the discharge signal that detects
It is compared with typical discharges database and comes analyze data and electric discharge type processing.
A kind of partial discharge detecting system method for early warning, passes through sound, light, electricity, wireless network/mobile network and computer
Application program carries out early warning.
A kind of partial discharge detecting system data query method, service end is uploaded to by IED systems by discharge information, is led to
Cross and accomplish real time review in mobile device installation APP application software.
Described accomplishes real time review in mobile device installation APP application software, is looked into according to different its of the rank of user
Read content different.
It should be noted that in information exchange, implementation procedure between each unit, module in said apparatus and system etc.
Hold, due to being based on same design with the inventive method embodiment, particular content can be found in the narration in the inventive method embodiment,
Here is omitted.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in computer-readable recording medium, and storage is situated between
Matter can include：Read-only storage（ROM, Read Only Memory）, random access memory（RAM, Random Access
Memory）, disk or CD etc..
A kind of partial discharge detecting system provided above the embodiment of the present invention is described in detail, and herein should
The principle and embodiment of the present invention are set forth with specific case, the explanation of above example is only intended to help and managed
Solve the method and its core concept of the present invention；Simultaneously for those of ordinary skill in the art, according to the thought of the present invention,
It will change in embodiment and application, in summary, this specification content should not be construed as to this hair
Bright limitation.
Claims (1)
1. a kind of localization method of Portable PD On-Line detecting system, it comprises the following steps：
Step 1, multiple UHF detecting signal units are installed to test equipment；
Step 2, the time difference by UHF detecting signal units detection point of discharge, to determine discharge position；
The Portable PD On-Line detecting system that this method is used, including for detecting the UHF of the insulation defect inside GIS
Detecting signal unit（1）, for UHF detecting signal units（1）The signal conversion that the signal detected is amplified, filtered
Unit（2）, carry out for the signal to amplification, after filtering process the Signal Pretreatment unit of data analysis arrangement（3）, for pair
The data acquisition unit that signal is collected after processing（4）, for data carry out comprehensive descision IED system units（5）,
UHF detecting signal units（1）The signal detected passes through signal conversion unit（2）Signal is amplified, filtered, and at
Signal after reason sends Signal Pretreatment unit to（3）, Signal Pretreatment unit（3）Data point are carried out to the signal after processing
Analysis arrangement sends data acquisition unit to（4）, by data acquisition unit（4）To IED system units after collecting to signal
（5）Comprehensive descision is carried out, assessment, early warning are made to the insulation status of GIS equipment, while being monitored in real time to data；
The signal conversion unit（2）By amplifier, bounce frequency filter and radio receiving transmitting module one are constituted, the Signal Pretreatment
Unit（3）It is made up of radio receiving transmitting module two and microprocessor one；The data acquisition unit（4）By high speed data acquisition system and
Microprocessor two is constituted；UHF detecting signal units（1）The signal detected passes to signal conversion unit（2）, signal conversion
Unit（2）Obtained signal is amplified through amplifier, then by bounce frequency filter filter after transmitted by radio receiving transmitting module one
Give Signal Pretreatment unit（3）In radio receiving transmitting module two, two signals received of radio receiving transmitting module pass to micro- place
Manage device one and carry out data analysis arrangement, the signal after analysis and arrangement is sent to data acquisition unit by microprocessor one（4）In
High speed data acquisition system, high speed data acquisition system sends microprocessor two to and carries out signal after being acquired to the signal received
Collect；
By data acquisition unit（4）IED system units are sent to by wireless network after collecting to signal（5）Carry out comprehensive
Close and judge；
Described IED system units（5）To data acquisition unit（4）The data gather, collected are detected and determine signal
Export pre-warning signal during the threshold value for reaching setting, the pre-warning signal exported by sound, light, active relay, passive
Relay output, wireless network, mobile network and computer applied algorithm carry out early warning；
Described UHF detecting signal units（1）With signal conversion unit（2）Connected by coaxial cable, signal conversion unit
（2）With Signal Pretreatment unit（3）Between connected by wireless receiving and dispatching mode, Signal Pretreatment unit（3）With data acquisition list
Member（4）Between electrically connect, Signal Pretreatment unit（3）, data acquisition unit（4）With IED system units（5）By wirelessly receiving
Originating party formula is connected；The UHF detecting signal units（1）Detected by superfrequency detection mode；The Signal Pretreatment list
Member（3）Region filtering is carried out by FHSS technologies and realizes signal acquisition；The wireless network is bluetooth, Wifi, frequency hopping communication three
Any one in person；The Signal Pretreatment unit（3）With data acquisition unit（4）It is fixed in same housing.
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| CN201410219147.XA CN104049185B (en) | 2014-05-22 | 2014-05-22 | A kind of Portable PD On-Line detecting system and method |
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| CN201410219147.XA CN104049185B (en) | 2014-05-22 | 2014-05-22 | A kind of Portable PD On-Line detecting system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106054046A (en) * | 2016-08-17 | 2016-10-26 | 国家电网公司 | GIS ultrahigh frequency partial discharge online monitoring system |
| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
| CN108573225B (en) * | 2018-03-30 | 2022-01-18 | 国网天津市电力公司电力科学研究院 | Partial discharge signal pattern recognition method and system |
| CN109143003A (en) * | 2018-11-05 | 2019-01-04 | 国网河南省电力公司焦作供电公司 | A kind of GIS equipment partial discharge detection system and its method |
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| KR101362898B1 (en) * | 2006-09-29 | 2014-02-17 | 한빛이디에스(주) | Ultrasonic Diagnosing System for Transformer |
| JP2010210411A (en) * | 2009-03-10 | 2010-09-24 | Exsym Corp | Partial discharge detector and method of detecting partial discharge |
| CN102288879B (en) * | 2011-04-25 | 2013-04-03 | 天津大学 | Ultrasonic detection device for partial discharge of switchgear based on wireless network |
| CN202217029U (en) * | 2011-08-02 | 2012-05-09 | 天津市电力公司 | Novel partial discharge comprehensive monitoring and analyzing system |
| CN202256583U (en) * | 2011-09-09 | 2012-05-30 | 北京兴泰学成仪器有限公司 | Partial discharge monitoring device for GIS (gas insulated switchgear) withstand voltage test |
| CN102508128A (en) * | 2011-10-24 | 2012-06-20 | 天津大学 | Switch cabinet local discharge transient-to-ground voltage detection system based on wireless network |
| CN103513165A (en) * | 2012-04-11 | 2014-01-15 | 国网辽宁省电力有限公司鞍山供电公司 | On-line monitoring system and method for GIS ultrahigh frequency local discharge |
| CN102841296B (en) * | 2012-09-10 | 2015-03-04 | 江苏科技大学 | Online monitoring system and method for partial discharge of intelligent switch cabinet based on ultra-high frequency detection |
| CN102999071B (en) * | 2012-11-16 | 2015-07-08 | 宁海县供电局 | Switch cabinet environment intelligent monitoring and processing system based on wireless network |
| CN103197180A (en) * | 2013-03-26 | 2013-07-10 | 国家电网公司 | Intelligent component used for gas insulated switchgear (GIS)/ breaker |
| CN103529370B (en) * | 2013-10-30 | 2016-08-17 | 国家电网公司 | A kind of partial discharge detection method for high-voltage switch cabinet |
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