CN103513165A - On-line monitoring system and method for GIS ultrahigh frequency local discharge - Google Patents
On-line monitoring system and method for GIS ultrahigh frequency local discharge Download PDFInfo
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Abstract
The invention discloses an on-line monitoring system and method for GIS ultrahigh frequency local discharge. The on-line monitoring system for the GIS ultrahigh frequency local discharge comprises a front end data collecting module, a wireless transmission module and a background data processing module. The front end data collecting module receives a detection signal of a front end ultrahigh frequency detection unit and the detection signal is sent to a background server through the wireless transmission module for data processing. The background data processing module receives and processes the detection signal sent by the front end data collecting module through the wireless transmission and then sends the detection signal to the background server to finish analyzing and storing of local discharge data. By the utilization of the on-line monitoring system and method, the problems that on-site wire arrangement is complex and line maintenance is difficult are fundamentally solved, and besides integrated detection of types of multiple devices and multiple test terminals can be achieved.
Description
Technical field
The present invention relates to GIS(Gas Insulated Switchgear: Cubicle Gas-Insulated Switchgear) superfrequency (UHF:Ultra High Frequency, electromagnetic wave bands, the electromagnetic wave bands that refers to 300MHz-3000MHz) partial discharge monitoring technology, particularly a kind of GIS superfrequency partial discharge monitoring system and method based on wireless data communication mode.
Background technology
Along with State Grid's expanding economy, the reliability of the high voltage electric equipments such as GIS is more and more subject to social attention, in the urgent need to carrying out the research of GIS on-line monitoring gordian technique in a deep going way.The application of the GIS partial discharge monitoring system based on superfrequency method, for GIS equipment safety operation and repair based on condition of component provide strong technical support.Wherein, shelf depreciation refers to a kind of phenomenon in High-Voltage Insulation field, and a part for insulation causes electric discharge because electric field concentrates, but electric discharge does not run through whole insulation.On-line monitoring refers under monitored equipment normal running (operation) conditions, and the some of equipment or certain several quantity of state are carried out to continuous tracking and testing.
In on-line monitoring system, data communication module is important component part wherein, and its function is that the data message collecting is sent to background monitoring system, so that control terminal obtains effective information.GIS on-line monitoring system data communication method used is wired connection at present, mainly contains following several:
(1) field bus technique
Fieldbus is to using the digitizing of single dispersion, intelligentized measurement and opertaing device to be connected and to realize mutual exchange message as network node and by bus, the network system and the control system that jointly complete automatic control function, comprise LonworkS, CAN, FF, ProfibuS etc.Being most widely used in electric system with CAN and LonworkS bussing technique wherein.
CAN bus: CAN (Control Area Network, control area net（CAN） network) by German BOSCH company, released the earliest, its agreement is to be also based upon on the open system interconnection model basis of the ISO of International Standards Organization, and be optimized, only adopt Physical layer wherein, data link layer, application layer, improved real-time.Its signal transmission medium is twisted-pair feeder.Traffic rate reaches as high as 1MbPs/40m, and directly transmission range can reach 10km/5kbps farthest, can reach at most 110 by locking equipment.CAN bus adopts short frame structure, and each frame effective word joint number is 8, and the transmission time is short, and antijamming capability is strong, is comparatively reliable in bussing technique.
LONWORKS bus: Ta Shi U.S. Echelon company releases Bing Youtayu Motorola, Toshiba advocates jointly, in formal formation of nineteen ninety.It has adopted whole seven layers of communication protocol of ISO/OSI model, use OO method for designing, by network variable, Design of Network Communication is reduced to parameter setting, its traffic rate is not from 300bpS to 1.5MbpS etc., direct communication distance can reach 2700m (78kbPs, twisted-pair feeder); Support the multiple communication medias such as twisted-pair feeder, concentric cable, optical fiber, radio frequency, infrared ray, line of electric force.The maximum node number that bus can articulate is 32000, adopts the data frame structure of variable length.
The appearance of field bus technique has brought opportunity to the development of industrial communication, but the intelligent electric power field apparatus kind that possesses at present field bus communication ability is many not enough, although can connect transition period by interface and conventional equipment, also lost the essential advantage of fieldbus.Although fieldbus Automation of Electric Systems complex control system as automation of transformation substations field has had many successfully application experiences, but comprised the multiple incompatible standard for Fieldbus such as LonworkS, CAN, Profibus, multiple fieldbus standard is different and cause bus interoperability extremely difficult.Realize fieldbus seamless access Ethernet complicated, the extendability of system is poor, multiple fieldbus standard is different and cause bus interoperability extremely difficult, development cost are relative with cost still higher, the manufacturer that user can select is also very limited, and these all cause the reduction of the too high and construction value of product price.
(2) RS232 and RS485 bussing technique
RS232 and RS485 interface are serial transmission interface.On-line monitoring equipment generally provides RS232 interface.RS232 short range transmission is transferred as the long Distance Transmission of RS485 after converting interface, and can set up easily device network, and this method at present application is more.The transmission range of RS232 more closely only has 15 meters, and general on-the-spot on-Line Monitor Device adopts after RS232, transmits after all utilizing the breakout box switching of RS232 and RS485, to increase transmission range and to facilitate networking.
RS232, RS485 only represents physical medium layer and the link layer of communication, if realize the two-way access of data, just must oneself write communication application program, but this program majority all can not meet the standard of ISOIOSI, can only realize more single function, be applicable to single equipment type, program does not possess versatility.In the facility network that RS232 or RS485 equipment are unified into, if number of devices surpasses 2, just must use RS485 to do communication media.The equipment room of RS485 net wants to exchange information and only has by main equipment transfer and could realize, this main equipment is PC normally, and in this facility network there is a main equipment in a permission, all the other are all from (Slave) equipment, thereby cannot exchange information between the Different Individual of same level, between equipment, interoperability is not strong.
(3) Fiber-optic Industry Network based on Ethernet
Industrial Ethernet is a kind of novel industrial control system that Distributed Control System (DCS) DCS and field bus control system FCS produce afterwards, and because Industrial Ethernet is a standard developing, its various standards are still in formulating and optimizing.Fiber-optic Industry Network is responsible for the communication between upper administration and supervision authorities and the next supervisory layers in novel DCS, and use optical fiber as transmission medium, both can complete distributed industrial monitoring task, also can realize the transformation tasks such as on-the-spot multimedia video, image and voice signal, the demand that is suitable for mass data transmission, but with respect to the cost performance of whole system, this kind of mode is also not suitable for the on-line monitoring application of electrical equipment.
Based on the above discussion to existing on-line monitoring system data transfer mode, be not difficult to find, though existing various cable data transmission specifications can meet the needs of electrical equipment networking and detection, the practical problems that has its host-host protocol and mode to overcome within the specific limits.In order to improve repair based on condition of component level, in the urgent need to developing, a new generation is more practical, the new architecture of the partial discharge monitoring data communication of better reliability.
As shown in Figure 1A, be the wire communication mode system architecture diagram of prior art based on field bus technique.This communication modes implementation method: the signal that preposition detecting unit detects passes to background server after by communication media (twisted-pair feeder, concentric cable, optical fiber etc.) and router, hub transfer, different according to adopted standard for Fieldbus, the selection of communication media and data layout to some extent need not.The defect of the wire communication mode system of this kind based on field bus technique is:
1, on-scene communication adopts wired connection (twisted-pair feeder, concentric cable, optical fiber etc.) that signal is caused to unit, backstage, and which needs on-the-spot a large amount of cabling, the line inspection and O&M work is loaded down with trivial details, cost is high, long-time running reliability is low;
2, the still acknowledged standard of neither one that develops at present of GIS on-line monitoring system is followed, do not form the measuring element of standard yet, the on-line detector device equipment kind that possesses field bus communication standard is few, although can, by interface and conventional sense equipment connection, also lose the essential advantage of fieldbus in interoperability and interoperability transition period.
3, fieldbus has comprised the multiple incompatible standard for Fieldbus such as LonworkS, CAN, Profibus, FF at present, still there is no so far a kind of acknowledged bus standard, IEC61158 standard is also had in the face of 8 kinds of difficult situations that standard for Fieldbus coexists, and multiple fieldbus standard is different and cause bus interoperability extremely difficult.
As shown in Figure 1B, be the wire communication network system architecture figure of prior art based on RS-485 bus.Although RS-485 in advanced and opening not as field bus technique, trouble waters that it but need not be faced many standards and deposit, and it has the ratio of performance to price that field bus technique can not be compared in addition, has very strong practicality and economy.
RS-485 adopts the network architecture of master/slave communication mode, bus-type, only has a host node, and only having the host node need to be with each from node communication, this host node is exactly backstage industrial computer, is the data acquisition module that carries out that is distributed in industry spot from node.For utilizing the RS-232 agreement of computing machine itself to communicate, must carry out level conversion, the high level of RS-232 is become to the Transistor-Transistor Logic level of RS485, generally by the RS-232/RS-485 converter of isolated form, realize.Communication media is generally twisted-pair feeder.The major defect that the wire communication of this kind based on RS-485 bus put system is:
1, be similar to the wire communication mode of bussing technique, RS-485 adopts wire communication mode (being generally twisted-pair feeder), is still faced with that site operation wiring is loaded down with trivial details, the line inspection and O&M workload is large, long-time running reliability is low problem.
2, RS485 only represents physical medium layer and the link layer of communication, if realize the two-way access of data, just must oneself write communication application program, but this program majority does not all meet the standard of ISOIOSI, can only realize more single function, be applicable to single equipment type, program does not possess versatility, the intelligent grid framework of inapplicable multimode amount, many sensing devices.
As shown in Figure 1 C, be the Fiber-optic Industry Network system architecture diagram of prior art based on Ethernet.In view of the jejune present situation still of field bus technique standard instantly, the compromise of being all unwilling to make of each major company, develop alone the field bus technique of oneself, everybody posts the technology that is contemplated for this comparative maturity of Ethernet, wishing it can become the sole criterion of fieldbus, bringing into play of the advantage of fieldbus.
Fiber-optic Industry Network is based on Ethernet ICP/IP protocol, and the signal that foreground measure and control device receives is converted to light signal by fiber optical transceiver, and light signal is delivered to backstage through Networks of Fiber Communications, and after photoelectric conversion, data pass to server.The major defect of the Fiber-optic Industry Network system of Ethernet is:
1, Fiber-optic Industry Network is to take the wire communication mode that optical fiber is transmission medium, is also faced with the problems such as the loaded down with trivial details wiring in working-yard and the line inspection and O&M workload are large.
2, optical-fibre communications involves great expense with respect to other communication modes, and cost performance is not high, and is not suitable for the on-line monitoring application of electrical equipment.
Summary of the invention
Technical matters to be solved by this invention is, a kind of GIS superfrequency partial discharge monitoring system and method based on wireless data communication mode is provided.
For achieving the above object, the invention provides a kind of GIS superfrequency partial discharge monitoring system, it is characterized in that, comprising: front end data acquisition module, wireless transport module and back-end data processing module, wherein,
The detection signal of this front end data acquisition module receiving front-end superfrequency detecting unit is wirelessly transmitted to background server by wireless transport module and carries out data processing;
After this detection signal that this back-end data processing module sends by this front end data acquisition module of this wireless transport module wireless receiving processing, send into analysis and the storage that data are put in the industrial computer server office of completing.
Above-mentioned GIS superfrequency partial discharge monitoring system, also comprise and move warning module, according to the analysis result of this industrial computer server, judge and send early warning signal, when detection signal is greater than the discharge signal of threshold value, the master data that system is put with note form forwarding office to the mobile communication number setting in advance by Ethernet and/or mobile communication network.
Above-mentioned GIS superfrequency partial discharge monitoring system, described wireless transport module adopts WiFi wireless communication mode.
Above-mentioned GIS superfrequency partial discharge monitoring system, described front end data acquisition module further comprises at least one collecting unit, each this collecting unit configures at least one sensor, and each this sensor all disposes a wireless transmitting unit.
Above-mentioned GIS superfrequency partial discharge monitoring system, described front end data acquisition module further comprises five collecting units, three sensors of each this collecting unit configuration, each this sensor all disposes a wireless transmitting unit.
Above-mentioned GIS superfrequency partial discharge monitoring system, described back-end data processing module disposes radio receiving unit.
Above-mentioned GIS superfrequency partial discharge monitoring system is provided with wireless relay route between this radio receiving unit and this radio receiving unit.
For achieving the above object, the present invention also provides a kind of on-line monitoring method of GIS superfrequency partial discharge monitoring system, comprising: front end data acquisition step, and wireless transmission step and back-end data treatment step, wherein,
This front end data acquisition step is that detection signal by front end data acquisition module receiving front-end superfrequency detecting unit is sent to background server by wireless transmission method and carries out data processing;
This back-end data treatment step is that this detection signal that has back-end data processing module to receive this front end data acquisition module transmission by wireless transmission method is also sent into analysis and the storage that data are put in the background server office of completing after processing.
Above-mentioned GIS superfrequency partial discharge monitoring method, also comprise and move early warning step, analysis result judgement according to this background server, when detection signal is greater than the discharge signal of threshold value, system is sent early warning signal to the mobile communication number setting in advance with note form by Ethernet and/or mobile communication network.
Above-mentioned GIS superfrequency partial discharge monitoring method, described wireless transmission method adopts WiFi wireless communication mode.
Compared with prior art, the present invention is based on the GIS superfrequency partial discharge monitoring system of wireless data communication mode, not only the problem that field wiring is loaded down with trivial details, line upkeep is difficult can be fundamentally solved, and the integrated detection of many device types ,Duo test terminal can be realized.
Further, wireless data communication mode of the present invention adopts WiFi wireless communication mode, facilitates the light access of radio network of equipment, has got around the chaotic situation that in cable data communication instantly, the many standards of field bus technique coexist; WiFi wireless telecommunications based on IEEE802.11 serial protocols, good to measuring terminals compatibility, break through RS485 bus standard and be only applicable to single equipment type, the uncurrent restriction of program, thus can realize the integrated detection of many device types ,Duo test terminal; WiFi wireless module market is comparatively ripe, builds large-scale distributed measurement network, and more traditional wire communication mode has more economy and engineering significance.
Further the present invention has configured mobile early warning system, makes online detection more convenient more humane.
Accompanying drawing explanation
Figure 1A is the wire communication mode system architecture diagram of prior art based on field bus technique;
Figure 1B is the wire communication network system architecture figure of prior art based on RS-485 bus;
Fig. 1 C is the Fiber-optic Industry Network system architecture diagram of prior art based on Ethernet;
Fig. 2 is that monitoring system fundamental block diagram is put in UHF of the present invention office;
Fig. 3 is wireless data communication process flow diagram of the present invention;
Fig. 4 is that monitoring method basic procedure is put in UHF of the present invention office;
Fig. 5 is that the engineering application architecture schematic diagram of monitoring system is put in UHF of the present invention office.
Embodiment
By particular specific embodiment, be illustrated below the application's embodiment, and person skilled in the art scholar can be understood easily by content disclosed in the present specification the application's other advantage and effect, also can be implemented or be applied by other different specific embodiment.
Fig. 2 is the GIS superfrequency partial discharge monitoring system fundamental block diagram based on wireless data communication mode of the present invention, with reference to figure 2, system of the present invention mainly comprises: front end data acquisition module 1, wireless transport module 2 and back-end data processing module 3, wherein, front end data acquisition module 1 integrates signal to be processed and wireless transmitting function, and the detection signal of its receiving front-end superfrequency detecting unit is wirelessly transmitted to background server 3 by wireless transport module 2 and carries out data processing; After this detection signal that this back-end data processing module 3 sends by this front end data acquisition module 1 of these wireless transport module 2 wireless receivings processing, send into analysis and the storage that data are put in the background server office of completing.Further, this system is also wrapped one and is moved warning module 4, according to the analysis result of this background server, judge and send early warning signal, when detection signal is greater than the discharge signal of threshold value, the master data that system is put with note form forwarding office to the mobile communication number setting in advance by Ethernet and/or mobile communication network.Wherein, front end data acquisition module 1 integrates signal to be processed and wireless transmitting function, and it comprises at least one collecting unit, and each this collecting unit configures at least one sensor, and each this sensor all disposes a wireless transmitting unit, this wireless transmitting unit is a wireless antenna.
Wherein, back-end data processing module 3 disposes radio receiving unit, and this radio receiving unit is that ((Access Point, WAP), is provided with wireless relay route to a wireless aps between radio receiving unit and radio receiving unit.
Wireless transport module 2 in the present invention adopts the WiFi wireless communication technique of forefront instantly.WiFi is a kind of wireless interconnected technology, by WI-FI alliance (WI-FI Alliance), held, can realize interconnected between the Wi-Fi product based on IEEE 802.11 series standards, it has defined one in the ISM band of 2.4GHz, message transmission rate is up to 11Mbit/s, and WiFi communication is at present by overwhelming majority of countries is general in the world.
In view of WiFi wireless telecommunications can allow computing machine and other electronic equipment just can be at the excellent characteristic transmitting and receive data of LAN (Local Area Network) high speed without connection, native system communication modes has also adopted WiFi wireless telecommunications.After the signal process A/D conversion that front-end collection unit receives, chnnel coding, demoder, grouping packing, UDP (User Data Protocol, User Datagram Protoco (UDP)) protocol processor, by wireless antenna, launched.Via WiFi wireless network, propagate the signal that Hou， backstage wireless aps receiving front-end sends, and the processing procedure of process contrary, detect data message, send background server to, the data flow of wireless telecommunications is as shown in Figure 3.
The present invention also further provides a kind of on-line monitoring method of GIS superfrequency partial discharge monitoring system, comprising: front end data acquisition step S1, and wireless transmission step S2, back-end data treatment step S3 and mobile early warning step S4, wherein,
This front end data acquisition step S1 is that detection signal by front end data acquisition module receiving front-end superfrequency detecting unit is sent to background server by wireless transmission method and carries out data processing;
This back-end data treatment step S3 is that this detection signal that has back-end data processing module to receive this front end data acquisition module transmission by wireless transmission method is also sent into analysis and the storage that data are put in the background server office of completing after processing;
Mobile early warning step S4, according to the analysis result judgement of this background server, when detection signal is greater than the discharge signal of threshold value, system is sent early warning signal to the mobile communication number setting in advance with note form by Ethernet and/or mobile communication network.
Further with concrete application examples, engineering application implementation mode of the present invention is described.Fig. 5 is that the engineering application architecture schematic diagram of monitoring system is put in UHF of the present invention office, with reference to figure 5,
Engineering application of the present invention mainly comprises the steps:
Step 2, sets up transistroute.For increase and decrease WIFI effective propagation distance, reduce the bit error rate, improve transfer efficiency, therefore on wireless launcher and backstage, connect and between wireless aps, set up high-power transistroute, the quantity of setting up, can every 40 meters of transistroutes according to concrete Range-based.
Step 3, installs backstage wireless aps.The main devices of this device is high-power antenna, and the setting height(from bottom) of backstage wireless aps must reach corresponding height, and between transistroute, there is no obvious buildings obstacle.
Step 4, configures mobile early warning system.When the discharge signal that is greater than threshold value being detected, the master data that GIS wireless detecting system will be put with note form forwarding office to set mobile number by INTERNET and mobile 3G network, is that online detection is more convenient more humane like this.
The integrated on-line monitoring system based on wireless data communication of proposition of the present invention belongs to the more practical framework of a new generation, better reliability, more humane, can solve a series of Practical Project problems that on-line monitoring system exists instantly, all significant undoubtedly for the intelligent level that improves repair based on condition of component and electrical network, be in particular in:
Introduce instantly advanced WIFI wireless transmission communication modes, fundamentally solved the problem that field wiring is loaded down with trivial details, line upkeep is difficult;
Wireless telecommunications, based on IEEE802.11 series WLAN standard, have got around the chaotic situation that in cable data communication instantly, the many standards of field bus technique coexist;
WiFi home control network communication protocol, good to measuring terminals compatibility, break through RS485 bus standard and be only applicable to single equipment type, the uncurrent restriction of program, thus can realize the integrated detection of many device types ,Duo test terminal;
Configure mobile early warning system.When the discharge signal that is greater than threshold value being detected, the master data that GIS wireless detecting system will be put with note form forwarding office to set mobile number by INTERNET and mobile 3G network, makes online detection more convenient more humane like this.
WiFi wireless module market is comparatively ripe, builds large-scale distributed measurement network, and more traditional wire communication mode has more economy and engineering significance.
Although the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. a GIS superfrequency partial discharge monitoring system, is characterized in that, comprising: front end data acquisition module, and wireless transport module and back-end data processing module, wherein,
The detection signal of this front end data acquisition module receiving front-end superfrequency detecting unit is wirelessly transmitted to background server by wireless transport module and carries out data processing;
After this detection signal that this back-end data processing module sends by this front end data acquisition module of this wireless transport module wireless receiving processing, send into analysis and the storage that data are put in the background server office of completing.
2. GIS superfrequency partial discharge monitoring system according to claim 1, it is characterized in that, also comprise and move warning module, analysis result judgement according to this background server, when detection signal is greater than the discharge signal of threshold value, system is sent early warning signal to the mobile communication number setting in advance with note form by Ethernet and/or mobile communication network.
3. GIS superfrequency partial discharge monitoring system according to claim 1, is characterized in that, described wireless transport module adopts WiFi wireless communication mode.
4. according to the GIS superfrequency partial discharge monitoring system described in any one in claim 1,2 or 3, it is characterized in that, described front end data acquisition module further comprises at least one collecting unit, each this collecting unit configures at least one sensor, and each this sensor all disposes a wireless transmitting unit.
5. GIS superfrequency partial discharge monitoring system according to claim 4, it is characterized in that, described front end data acquisition module further comprises five collecting units, three sensors of each this collecting unit configuration, and each this sensor all disposes a wireless transmitting unit.
6. according to the GIS superfrequency partial discharge monitoring system described in any one in claim 1,2 or 3, it is characterized in that, described back-end data processing module disposes radio receiving unit.
7. GIS superfrequency partial discharge monitoring system according to claim 6, is characterized in that, between this radio receiving unit and this radio receiving unit, is provided with wireless relay route.
8. application rights requires an on-line monitoring method for the GIS superfrequency partial discharge monitoring system described in any one in 1-7, it is characterized in that, comprising: front end data acquisition step, and wireless transmission step and back-end data treatment step, wherein,
This front end data acquisition step is that detection signal by front end data acquisition module receiving front-end superfrequency detecting unit is sent to background server by wireless transmission method and carries out data processing;
This back-end data treatment step is that this detection signal that has back-end data processing module to receive this front end data acquisition module transmission by wireless transmission method is also sent into analysis and the storage that data are put in the background server office of completing after processing.
9. GIS superfrequency partial discharge monitoring method according to claim 8, it is characterized in that, also comprise and move early warning step, analysis result judgement according to this background server, when detection signal is greater than the discharge signal of threshold value, system is sent early warning signal to the mobile communication number setting in advance with note form by Ethernet and/or mobile communication network.
10. GIS superfrequency partial discharge monitoring method according to claim 8, is characterized in that, described wireless transmission method adopts WiFi wireless communication mode.
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| CN104049185A (en) * | 2014-05-22 | 2014-09-17 | 西安富邦科技实业有限公司 | Portable partial discharge detecting system and method |
| CN104468555A (en) * | 2014-12-02 | 2015-03-25 | 国家电网公司 | Data conversion setting method of partial discharge online monitoring device |
| CN104502817A (en) * | 2014-12-17 | 2015-04-08 | 广州供电局有限公司 | Wireless ultrahigh frequency sensor for local discharge detection under impulse voltage |
| CN106054046A (en) * | 2016-08-17 | 2016-10-26 | 国家电网公司 | GIS ultrahigh frequency partial discharge online monitoring system |
| CN106154129A (en) * | 2016-07-22 | 2016-11-23 | 中国石油化工股份有限公司 | Wireless superfrequency GIS partial discharge detection method |
| CN106291270A (en) * | 2016-07-22 | 2017-01-04 | 中国石油化工股份有限公司 | GIS partial discharge supersonic detection method based on radio communication |
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| CN104049185A (en) * | 2014-05-22 | 2014-09-17 | 西安富邦科技实业有限公司 | Portable partial discharge detecting system and method |
| CN104468555A (en) * | 2014-12-02 | 2015-03-25 | 国家电网公司 | Data conversion setting method of partial discharge online monitoring device |
| CN104502817A (en) * | 2014-12-17 | 2015-04-08 | 广州供电局有限公司 | Wireless ultrahigh frequency sensor for local discharge detection under impulse voltage |
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