CN102564493A - Online monitoring system for galloping of overhead power transmission line - Google Patents
Online monitoring system for galloping of overhead power transmission line Download PDFInfo
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Abstract
The invention belongs to the technical field of power transmission line state monitoring, and discloses an online monitoring system for galloping of an overhead power transmission line. The online monitoring system is characterized in that the online monitoring system for the line of each span consists of a plurality of monitoring substations, two monitoring master stations and a background monitoring upper computer, wherein the monitoring substations are arranged on the transmission line; the two monitoring master stations are arranged on towers respectively; the background monitoring upper computer is arranged in a monitoring center; the two master stations and the plurality of substations monitor the galloping state of the line of each span; the substations accurately position the galloping of the line by utilizing acceleration sensors, and upload positioning data to the master stations through short-range radio frequency; each master station receives galloping monitoring data from four nearby substations, and uploads the monitoring data and environmental meteorological data to the background monitoring upper computer through a general packet radio service (GPRS); and when each master station synchronizes a clock through a global positioning system (GPS) module, the synchronism of the uploaded data is ensured. The online monitoring system has a small volume, low influence on mechanical properties of the line, high dynamic performance and high data monitoring accuracy, is low in cost, and can work round the clock.
Description
Technical field
The invention belongs to transmission line of electricity Condition Monitoring Technology field, relate to a kind of overhead transmission line galloping on-line monitoring system, be specially a kind of overhead transmission line and wave on-line monitoring system based on short range rf/acceleration transducer/GPS.
Background technology
The reliability of grid power transmission depends on the reliability of transmission line of electricity duty to a great extent.The overhead transmission line long-time running is under open-air condition, and effect of natural conditions such as wind-engaging, rain, ice, thunder and lightning are bigger, and its duty can not be guaranteed.Especially when windage yaw taking place and ERST such as wave, flashover, tripping operation possibly take place in circuit, even accident such as tower.
China is vast in territory, climate variability, windage yaw and wave the ERST pests occurrence rule and inherent mechanism different.Especially in recent years; Influenced by the global climate environmental change; Weather conditions such as the rainfall of coastland weather, intensity of sunshine, wind direction and humiture and hinterland climate difference strengthen year by year, and the windage yaw of coastland circuit, the performance degree of waving state and probability of happening can't be with reference to the hinterland related datas.In order to inquire about culprit quickly and efficiently, to reduce economic loss that line accident causes, accurately accident being carried out early warning, full and accurate science data and theoretical foundation that transmission line of electricity design and technological transformation are provided; Be necessary coastland circuit unusual condition is launched research, and looks for windage yaw and wave reason and the rule that state takes place with various environment, the corresponding cause-effect relationship of weather data.The typhoon climate center wind-force of coastal uniqueness can reach more than 17 grades; For basic reason and the rule that more deep analysis coastland circuit windage yaw and the state of waving take place, also need the nothing ice circuit windage yaw brought out under the high wind condition, state such as wave are studied.
Since 2000, domestic electrical network has occurred much because of the power transmission line windage yaw, the accident that ERST causes such as has waved, so each research institution has carried out big quantity research for the exploitation of transmission line of electricity state analysis theory and monitoring system.Application publication number " is waved monitoring system and monitoring method based on the transmission pressure of GPS " for the Chinese invention patent of " CN 101975565A "; Disclose a kind of transmission pressure and waved monitoring system and monitoring method based on GPS; But its positioning error is bigger, is generally 1 to 10 meter.Application publication number " is waved and the windage yaw on-line monitoring system based on the transmission line wire of differential GPS " for the Chinese invention patent of " CN 101986100A "; Disclose a kind of transmission line of electricity windage yaw, waved on-line monitoring system based on differential GPS; Though its location is comparatively accurate; But need set up the differential GPS base station, cost is too high.Application publication number is the Chinese invention patent " based on the transmission line galloping on-line monitoring system of acceleration transducer " of " CN 101571413A "; A kind of transmission line galloping on-line monitoring system based on acceleration transducer is disclosed; A line span is equipped with a main website and a plurality of substation; Substation and main website distance are far away, and the substation data need to be uploaded to main website by high-power RF, and high-power RF module volume is big, cost is high; Can influence circuit and wave mechanical characteristic, circuit waved caused potential threat.The present invention discloses a kind of overhead transmission line based on short range rf/acceleration transducer/GPS and waves on-line monitoring system, but system bulk is little, little to circuit mechanical characteristic influence, dynamic property good, the data monitoring precision high, all weather operations with low cost.
Summary of the invention
Technical matters to be solved by this invention is the deficiency to prior art; Provide a kind of rational in infrastructure; Easy to use, can the on-line monitoring high-voltage operation in the isoparametric a kind of transmission line galloping on-line monitoring system of scene temperature, humidity, wind speed, wind direction, intensity of sunshine and conductor temperature, gravity, the amplitude of waving of circuit.
For realizing above-mentioned purpose; The present invention adopts following technical scheme: the present invention is a kind of overhead transmission line galloping on-line monitoring system, is characterized in: the on-line monitoring system of each span circuit is made up of the background monitoring host computer that is installed in several monitoring sub-stations on the transmission line of electricity, be installed in two monitoring main websites on the shaft tower and be installed in Surveillance center respectively;
Described monitoring sub-station comprises the STM32 single-chip microcomputer, on the STM32 single-chip microcomputer, is connected with intelligent protection CT power supply, wire temperature sensor, acceleration transducer and RF radio-frequency module; Wire temperature sensor is connected with the AD pin of said STM32 single-chip microcomputer; The I of acceleration transducer and said STM32 single-chip microcomputer
2The C pin is connected; The RF radio-frequency module is connected with the UART pin of said STM32 single-chip microcomputer; Monitoring sub-station utilizes acceleration transducer that circuit is waved accurately and locatees, and locator data is uploaded to nearer monitoring main website through the RF radio-frequency module;
Described monitoring main website comprises STM32 single-chip microcomputer main website control system, supply module, GPRS module, RF radio-frequency module, GPS module, ambient temperature and humidity sensor, wind speed wind direction sensor, sunshine radiation sensor and rain sensor; GPRS module, RF radio-frequency module, GPS module are connected with the UART pin of described STM32 single-chip microcomputer main website control system; The ambient temperature and humidity sensor is connected with the SPI pin of STM32 single-chip microcomputer main website control system; Wind speed wind direction sensor, sunshine, radiation sensor was connected with the AD pin of STM32 single-chip microcomputer main website control system with rain sensor; Described supply module comprises photo-voltaic power supply, and photo-voltaic power supply is connected with control module, and is parallelly connected with accumulator again, connects with load at last;
Each monitoring main website receives the Monitoring Data of waving of nearer monitoring sub-station, through the GPRS module with Monitoring Data and environment weather data upload to background monitoring host computer; Through the GPS module carry out to the time, guarantee to upload synchronization of data property.
In the overhead transmission line galloping on-line monitoring system of the present invention: said intelligent protection CT power supply can use disclosed intelligent power commonly used or CT power supply in the prior art, and preferred intelligent protection CT power supply comprises electricity-fetching module, electric energy conditioning module, intelligent protection module;
Said electricity-fetching module contains bus, current transformer core, secondary coil, sample resistance, single-pole double-throw (SPDT) relay; One time bus passes said current transformer core; Secondary coil is on current transformer core, and is and parallelly connected with sample resistance, connects with the single-pole double-throw (SPDT) relay again;
Said electric energy conditioning module contains rectification circuit, most advanced and sophisticated leadage circuit, ripple filtering electric capacity, mu balanced circuit, is connected in series successively between each circuit; Described most advanced and sophisticated leadage circuit comprises stabilivolt; Stabilivolt is connected with the stabilivolt current-limiting resistance afterwards and the direct current output-parallel of rectifier bridge; Another current-limiting resistance of parallel connection wherein, this current-limiting resistance links to each other with the power tube gate pole, with the voltage of conducting of power controlling pipe or shutoff;
Said intelligent protection circuit comprises STM8 single-chip microcomputer, RF radio-frequency module and super capacitor; The RF radio-frequency module is connected with the UART pin of said STM8 single-chip microcomputer; Super capacitor is connected in parallel on the feeder ear of said STM8 single-chip microcomputer.
In the overhead transmission line galloping on-line monitoring system technical scheme of the present invention, each components and parts, module and control system all can be used in the prior art disclosed applicable to components and parts of the present invention, module and control system if no special instructions.
The number of the monitoring sub-station among the present invention on each span circuit is set on demand, presses the length of circuit during setting, and generally the monitoring sub-station on each span circuit is about 8.
On background monitoring host computer of the present invention, analysis expert software can be installed; Be preferably with following function: show, store Monitoring Data,, in time overhaul and prevent and treat for the dispatcher provides defeated various parameters so that understand line security.
Said monitoring sub-station adopts intelligent protection CT power supply to supply power, and the monitoring main website adopts the supply module power supply, and said background monitoring host computer can be by mains-supplied.Can adopt 433MHz short distance RF technical communication between said monitoring sub-station and the monitoring main website, adopt the technical communication of GPRS long distance wireless between said monitoring main website and the monitoring host computer.When the high-pressure side line current was excessive, said most advanced and sophisticated leadage circuit converted unnecessary induction electric energy into heat energy and releases.When the holding circuit temperature rise of releasing is too high, said intelligent protection module will cut off current supply circuit, be reduced to the permission working temperature up to the power supply temperature.
Compared with prior art, but system bulk of the present invention is little, little to circuit mechanical characteristic influence, dynamic property good, the data monitoring precision high, all weather operations with low cost.Owing to adopt acceleration transducer/GPS combination, can accurately locate and can guarantee to upload synchronization of data property, and cost to make up the differential GPS base station much lower.Application of the present invention can be practiced thrift human and material resources and time, can avoid causing big face power outage, for the safety transmission of electricity provides effective measure, can be widely used on the ultra-high-tension power transmission line.
Description of drawings
Fig. 1 is a kind of synoptic diagram that is provided with of the present invention;
Fig. 2 is the structured flowchart of monitoring sub-station of the present invention;
Fig. 3 is an intelligent protection CT power supply architecture schematic block diagram of the present invention;
Fig. 4 is the structured flowchart of monitoring of the present invention main website;
Fig. 5 is the structural representation block diagram of supply module of the present invention.
Embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1; With reference to Fig. 1-5; A kind of overhead transmission line galloping on-line monitoring system; Be distributed on the transmission line of electricity that need wave monitoring, as shown in Figure 1, the on-line monitoring system in each line span is made up of the monitoring host computer 3 that is installed in eight monitoring sub-stations 1 on the transmission line of electricity, is installed in two monitoring main websites 2 on the shaft tower and is installed in Surveillance center.Wherein communicate through short distance RF technology between monitoring sub-station 1 and the nearer monitoring main website 2; Communicate through the GPRS technology between monitoring main website 2 and the monitoring host computer 3.
As shown in Figure 2, said monitoring sub-station 1 comprises STM32 single-chip microcomputer 11, intelligent protection CT power supply 12, wire temperature sensor 13, acceleration transducer 14, RF radio-frequency module 15.Wire temperature sensor 13 (can use thermistor MF52) and acceleration transducer 14 (MMA7455) are with the conductor temperature that records and wave parameter and deposit to STM32 single-chip microcomputer 11, send the data to monitoring main website 2 through RF radio-frequency module 15 (Si4432).In the operational process, monitoring sub-station 1 is through 12 power supplies of intelligent protection CT power supply.
As shown in Figure 3, said intelligent protection CT power supply 12 comprises electricity-fetching module 121, electric energy conditioning module 122, intelligent protection module 123;
Said electricity-fetching module contains bus 1211, current transformer core 1212, secondary coil 1213, sample resistance 1214, single-pole double-throw (SPDT) relay 1215; One time bus 1211 passes said current transformer core 1212; Secondary coil 1213 is on current transformer core 1212, and is and parallelly connected with sample resistance 1214, connects with single-pole double-throw (SPDT) relay 1215 again;
Said electric energy conditioning module contains rectification circuit 1221, most advanced and sophisticated leadage circuit 1222, ripple filtering electric capacity 1223, mu balanced circuit 1224; Be connected in series successively between each circuit; Described most advanced and sophisticated leadage circuit 1222 comprises stabilivolt; Stabilivolt is connected with the stabilivolt current-limiting resistance afterwards and the direct current output-parallel of rectifier bridge; Another current-limiting resistance of parallel connection wherein, this current-limiting resistance links to each other with the power tube gate pole, with the voltage of conducting of power controlling pipe or shutoff
Said intelligent protection module contains STM8 single-chip microcomputer 1231, RF radio-frequency module 15 and super capacitor.RF radio-frequency module 15 is connected with the UART pin of said STM8 single-chip microcomputer 1231; Super capacitor is connected in parallel on the feeder ear of said STM8 single-chip microcomputer 1231.
Be connected with the alternating current of constant amplitude on the said bus 1211, will produce alternating magnetic field around the circuit, and on said iron core 1212, produce the magnetic flux of alternation, this magnetic flux will induce the induction current of alternation on said inductive coil 1213.Induction current becomes electromotive force output on said sample resistance 1214.Under the condition of said single-pole double-throw (SPDT) relay 1215 (JQC-3F) closure, said induction electromotive force becomes pulsating dc voltage after rectification circuit 1221 rectifications.Pulsating dc voltage is released the spike energy of pulsating direct current behind said most advanced and sophisticated leadage circuit 1222, again can be with bigger voltage ripple filtering through said filter capacitor 1223.At last, this voltage is reduced to 5.5V behind mu balanced circuit 1224, for use.
In the entire circuit operational process, said single chip control module 1231 can be monitored the working temperature of most advanced and sophisticated leadage circuit 1222, and preset temperature exceed standard threshold value, recover threshold value and the duration that exceeds standard.After working temperature exceeds standard; Said single chip control module 1231 is broken off feed circuit through said single-pole double-throw (SPDT) relay 1215; After the working temperature of said most advanced and sophisticated leadage circuit 1222 got into the recovery threshold value, said single-pole double-throw (SPDT) relay 1215 inserted feed circuit again.After power supply was broken off, said single chip control module 1231 was supplied power by inner super capacitor.When in the preset duration that exceeds standard, the working temperature of said most advanced and sophisticated leadage circuit 1222 can not get into when recovering threshold value, and said RF radio-frequency module 15 starts, and issues the order of supply unit fault.
As shown in Figure 4, said monitoring main website 2 comprises STM32 single-chip microcomputer main website control system 21, supply module 22, GPRS module 23, RF radio-frequency module 15, GPS module 25, ambient temperature and humidity sensor 26, wind speed wind direction sensor 27, sunshine radiation sensor 28, rain sensor 29.Ambient temperature and humidity sensor 26 (SHT71), wind speed wind direction sensor 27 (BCQ-FS-BA), sunshine, radiation sensor 28 (GZD systems), rain sensor (WD211) were deposited the environmental parameter that records to STM32 single-chip computer control system 21, and the data of surveying send to Surveillance center 3 in the lump in the monitoring sub-station of being received with these data and through RF radio-frequency module 15 (Si4432) through GPRS module 23 (EM310) 1.In the operational process, supply module 22 is to 2 power supplies of monitoring main website; GPS module 25 (EM310) carry out to the time, guarantee to upload synchronization of data property.
As shown in Figure 5, said supply module 22 is made up of solar photovoltaic power 221, accumulator 222 and control module 223.Photo-voltaic power supply 221 carries out the electric energy conditioning through control module, and accumulators 222 chargings are given the rear electric by accumulator again.
The monitoring substation of present embodiment utilizes acceleration transducer that circuit is waved accurately and locatees; Locator data is uploaded to master station through short range rf; Each master station receives the Monitoring Data of waving of four nearer monitoring substations, through GPRS with Monitoring Data and environment weather data upload to background monitoring host computer.Each master station through the GPS module carry out to the time, guarantee to upload synchronization of data property.
Claims (2)
1. overhead transmission line galloping on-line monitoring system is characterized in that: the on-line monitoring system of each span circuit is made up of the background monitoring host computer that is installed in several monitoring sub-stations on the transmission line of electricity, be installed in two monitoring main websites on the shaft tower and be installed in Surveillance center respectively;
Described monitoring sub-station comprises the STM32 single-chip microcomputer, on the STM32 single-chip microcomputer, is connected with intelligent protection CT power supply, wire temperature sensor, acceleration transducer and RF radio-frequency module; Wire temperature sensor is connected with the AD pin of said STM32 single-chip microcomputer; The I of acceleration transducer and said STM32 single-chip microcomputer
2The C pin is connected; The RF radio-frequency module is connected with the UART pin of said STM32 single-chip microcomputer; Monitoring sub-station utilizes acceleration transducer that circuit is waved accurately and locatees, and locator data is uploaded to nearer monitoring main website through the RF radio-frequency module;
Described monitoring main website comprises STM32 single-chip microcomputer main website control system, supply module, GPRS module, RF radio-frequency module, GPS module, ambient temperature and humidity sensor, wind speed wind direction sensor, sunshine radiation sensor and rain sensor; GPRS module, RF radio-frequency module, GPS module are connected with the UART pin of described STM32 single-chip microcomputer main website control system; The ambient temperature and humidity sensor is connected with the SPI pin of STM32 single-chip microcomputer main website control system; Wind speed wind direction sensor, sunshine, radiation sensor was connected with the AD pin of STM32 single-chip microcomputer main website control system with rain sensor; Described supply module comprises photo-voltaic power supply, and photo-voltaic power supply is connected with control module, and is parallelly connected with accumulator again, connects with load at last;
Each monitoring main website receives the Monitoring Data of waving of nearer monitoring sub-station, through the GPRS module with Monitoring Data and environment weather data upload to background monitoring host computer; Through the GPS module carry out to the time, guarantee to upload synchronization of data property.
2. overhead transmission line galloping on-line monitoring system according to claim 1 is characterized in that: said intelligent protection CT power supply comprises electricity-fetching module, electric energy conditioning module, intelligent protection module;
Said electricity-fetching module contains bus, current transformer core, secondary coil, sample resistance, single-pole double-throw (SPDT) relay; One time bus passes said current transformer core; Secondary coil is on current transformer core, and is and parallelly connected with sample resistance, connects with the single-pole double-throw (SPDT) relay again;
Said electric energy conditioning module contains rectification circuit, most advanced and sophisticated leadage circuit, ripple filtering electric capacity, mu balanced circuit, is connected in series successively between each circuit; Described most advanced and sophisticated leadage circuit comprises stabilivolt; Stabilivolt is connected with the stabilivolt current-limiting resistance afterwards and the direct current output-parallel of rectifier bridge; Another current-limiting resistance of parallel connection wherein, this current-limiting resistance links to each other with the power tube gate pole, with the voltage of conducting of power controlling pipe or shutoff;
Said intelligent protection circuit comprises STM8 single-chip microcomputer, RF radio-frequency module and super capacitor; The RF radio-frequency module is connected with the UART pin of said STM8 single-chip microcomputer; Super capacitor is connected in parallel on the feeder ear of said STM8 single-chip microcomputer.
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| CN108254021A (en) * | 2018-01-03 | 2018-07-06 | 江阴职业技术学院 | A kind of power transmission line dynamic capacity increase monitoring device under Internet of Things framework |
| CN109000716A (en) * | 2018-06-06 | 2018-12-14 | 清华大学 | One kind being based on the faradic transmission line galloping monitoring method of OPGW ground wire |
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| CN109600863A (en) * | 2019-01-04 | 2019-04-09 | 四川汇源光通信有限公司 | Transmission line of electricity monitors communication base station and transmission method on-line |
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| CN113959488A (en) * | 2021-10-09 | 2022-01-21 | 国网天津市电力公司 | High-voltage transmission line on-line monitoring method |
| CN114295196A (en) * | 2021-12-06 | 2022-04-08 | 清华大学 | Overhead line galloping positioning method and device based on ground wire electromagnetic signals |
| CN114295196B (en) * | 2021-12-06 | 2022-09-16 | 清华大学 | Overhead line galloping positioning method and device based on ground wire electromagnetic signals |
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