CN101915889B - Conductor sag on-line monitoring system - Google Patents
Conductor sag on-line monitoring system Download PDFInfo
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- CN101915889B CN101915889B CN2010102496910A CN201010249691A CN101915889B CN 101915889 B CN101915889 B CN 101915889B CN 2010102496910 A CN2010102496910 A CN 2010102496910A CN 201010249691 A CN201010249691 A CN 201010249691A CN 101915889 B CN101915889 B CN 101915889B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 63
- 239000004020 conductor Substances 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000012856 packing Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 230000005674 electromagnetic induction Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract 5
- 230000001131 transforming effect Effects 0.000 abstract 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention provides a conductor slag on-line monitoring system comprising a signal collecting device, a monitoring host computer, a power supply device, an information transmitting device and a monitoring center, wherein the signal collecting device is used for collecting the temperature as well as the inclination angle and the current of a conductor; the monitoring host computer is used for pretreating the collected information to acquire the distance between the lowest point of a conductor slag and the ground and packing the distance between the lowest point of the conductor slag and the ground and the collected information; the power supply device is used for supplying power, transforming voltage and starting or stopping the monitoring host computer; the information transmitting device is used for transforming the packed information to the monitoring center; and the monitoring center is used for presetting warning values, establishing an early warning mechanism, configuring the packed information to different local area networks, and forecasting the variation trend of the conductor slag and the transmission capacity of a transmission line in real time. The conductor slag on-line monitoring system has the characteristics of strong real-time performance, high safety, reliable forecasting and the like and can be widely applied to electric systems.
Description
Technical field
The present invention relates to a kind of monitoring technology, particularly a kind of lead sag on-line monitoring system.
Background technology
As everyone knows, in practical application, the electric current that passes through in the lead can make conductor temperature raise, and still, the conductor temperature rising can cause lead, and oxidation even joint are blown in the joint; Conductor temperature raises and also can cause the lead sag to increase simultaneously, thereby makes lead owing to the scissors crossing distance is discharged inadequately.And in recent years, because the needs that power load increases, many existing transmission lines of electricity are in order to improve transport capacity, and the highest operation allowable temperature of lead is brought up to 80 ℃ from 70 ℃, and at this moment line-sag just becomes main restricting factor.Except the variation of circuit operating load can cause the variation of lead sag, the meteorological condition of surrounding environment also can influence the variation of lead sag.
This shows, the excessive hidden danger that not only can cause the accident of lead sag, and can limit the transport capacity of transmission line of electricity.In order to ensure transmission line of electricity with by the safe operation of line balance converter, need carry out verification or monitoring in real time to sag.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of real-time, safe, reliable lead sag on-line monitoring system of prediction.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
Lead sag on-line monitoring system provided by the invention, said system comprises signal pickup assembly, monitoring main frame, electric supply installation, information carrying means and Surveillance center; Wherein,
Harvester is used for the angle between current in wire, conductor temperature, lead ambient atmosphere temperature, lead and the surface level of the transmission line of electricity of being gathered is sent to the monitoring main frame;
The monitoring main frame; Be used for the current in wire that harvester sends is carried out pre-service; Apart from the distance on ground, the lead of harvester transmission and the angle between the surface level, obtain the distance on lead sag perigee distance ground at the point of fixity on the tower bar according to the distance between the tower bar, lead; Conductor temperature, lead ambient atmosphere temperature according to harvester sends are obtained the lead temperature rise, set up the corresponding relation between current in wire and the lead temperature rise; And, be sent to information carrying means with the angle between corresponding relation, lead and the surface level between distance, conductor temperature, lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground, through after pretreated current in wire is packaged as package information;
Electric supply installation is used for power taking from the transmission line of electricity, and the voltage that power taking obtains is carried out voltage transitions; Send run signal or cut-off signals according to the size of current in the transmission line of electricity to the monitoring main frame;
Information carrying means is used for wireless mode or GPRS/CDMA mode, and the package information that the monitoring main frame is sent is forwarded to Surveillance center;
Surveillance center is used for the package information that information carrying means is transmitted is configured to different local area; Simultaneously, according to the transmission capacity of package information real-time estimate lead sag variation tendency and transmission line of electricity; Also be used for preset alarming value, set up early warning mechanism.
In sum, lead sag on-line monitoring system according to the invention is collection site in real time, according to the current in wire situation of gathering, determines whether the start-up circuit protection; Server is according to the real time data of gathering; Prediction lead sag variation tendency; Be convenient to the thermally-stabilised load of dispatching of power netwoks and managerial personnel's Real-time and Dynamic adjustment transmission line of electricity; Bring into play the transmission line of electricity transport capacity to greatest extent, to improve that working line is guaranteed in operation of power networks ability and protection and by the safety of line balance converter; In addition, under the situation of current in wire sudden change, turn-off the monitoring main frame,, further guaranteed the security of lead sag on-line monitoring system according to the invention with the security of operation under the strain emergency circumstances.
Description of drawings
Fig. 1 is the structural representation of lead sag on-line monitoring system of the present invention;
Fig. 2 is the structural representation of the signal pickup assembly of lead sag on-line monitoring system of the present invention;
Fig. 3 is the structural representation of the monitoring main frame of lead sag on-line monitoring system of the present invention;
Fig. 4 is the structural representation of the electric supply installation of lead sag on-line monitoring system of the present invention;
Fig. 5 is the structural representation of the information carrying means of lead sag on-line monitoring system of the present invention;
Fig. 6 is the structural representation of the Surveillance center of lead sag on-line monitoring system of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing and specific embodiment that the present invention is done to describe in detail further below.
As shown in Figure 1, lead sag on-line monitoring system according to the invention comprises signal pickup assembly 1, monitoring main frame 2, electric supply installation 3, information carrying means 4 and Surveillance center 5; Wherein,
Harvester 1 is used for the angle between current in wire, conductor temperature, lead ambient atmosphere temperature, lead and the surface level of the transmission line of electricity of being gathered is sent to monitoring main frame 2.
Monitoring main frame 2; Be used for the current in wire that harvester 1 sends is carried out pre-service; Apart from the distance on ground, the lead of harvester 1 transmission and the angle between the surface level, obtain the distance on lead sag perigee distance ground at the point of fixity on the tower bar according to the distance between the tower bar, lead; Conductor temperature, lead ambient atmosphere temperature according to harvester 1 sends are obtained the lead temperature rise, set up the corresponding relation between current in wire and the lead temperature rise; And, be sent to information carrying means 4 with the angle between corresponding relation, lead and the surface level between distance, conductor temperature, lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground, through after pretreated current in wire is packaged as package information.
In the practical application, monitoring main frame 2 is the microprocessor of 32Bit.
The temperature difference between conductor temperature and the lead ambient atmosphere temperature is exactly that lead is owing to transmission of electric energy produces the lead temperature rise.Monitoring main frame 2 through long-term conductor temperature, lead ambient atmosphere temperature, the current in wire of gathering, is set up the corresponding relation between current in wire and the lead temperature rise according to harvester 1.
The electric pressure of transmission line of electricity transmission of electric energy, the distance of lead sag perigee distance surface level have been stipulated in the Electric Design standard; Electric pressure in the actual motion can not surpass the electric pressure of regulation, and the sag minimum point can not surpass the lead sag minimum point of regulation.
Information carrying means 4 is used for wireless mode or GPRS/CDMA mode, and the package information that monitoring main frame 2 is sent is forwarded to Surveillance center 5.
Surveillance center 5 is used for the package information that information carrying means 4 is transmitted is configured to different local area; Simultaneously, according to the transmission capacity of package information real-time estimate lead sag variation tendency and transmission line of electricity; Also be used for preset alarming value, set up early warning mechanism.
Among the present invention, the angle between current in wire, conductor temperature, lead ambient atmosphere temperature, lead and the surface level of harvester collection transmission line of electricity; Under the protection control of electric supply installation; The monitoring main frame is according to Information Monitoring and the transmission line information of self storing; Such as; Distance between the tower bar, the point of fixity of lead on the tower bar are obtained the distance on lead sag perigee distance ground and the computing informations such as corresponding relation between current in wire and the lead temperature rise apart from the information such as distance on ground; Surveillance center analyzes the transmission line of electricity transport capacity according to Information Monitoring, computing information prediction lead sag variation tendency, is convenient to the thermally-stabilised load of dispatching of power netwoks and managerial personnel's Real-time and Dynamic adjustment transmission line of electricity.
As shown in Figure 2, harvester 1 comprises current sensor 11, bi-axial tilt angle transducer 12 and temperature sensor 13; Wherein,
Current sensor 11 is used for gathering the current in wire of transmission line of electricity, and current in wire is sent to monitoring main frame 2.
Among the present invention, the signal of the current in wire that current sensor 11 is gathered is a simulating signal.
Bi-axial tilt angle transducer 12 is used to measure the angle between lead and the surface level, and the angle between lead and the surface level is sent to monitoring main frame 2.
In the practical application, lead that bi-axial tilt angle transducer 12 measures and the angle between the surface level are digital quantity, and bi-axial tilt angle transducer 12 directly is sent to monitoring main frame 2 through the SPI serial ports with the angle between lead and the surface level.
Temperature sensor 13 is used to measure conductor temperature, lead ambient atmosphere temperature, and conductor temperature and lead ambient atmosphere temperature are sent to monitoring main frame 2.
In the practical application, conductor temperature that temperature sensor 13 measures and lead ambient atmosphere temperature are digital quantity.
As shown in Figure 3, monitoring main frame 2 filtering circuits 21, A/D change-over circuit 22 and information process unit 23; Wherein,
Filtering circuit 21 is used for the current in wire that current sensor 11 sends is carried out Filtering Processing, and the current in wire after handling is sent to A/D change-over circuit 22.
A/D change-over circuit 22 is used for current in wire that filtering circuit 21 is sent, convert digital quantity into by analog quantity after, be sent to information process unit 23.
Among the present invention, A/D change-over circuit 22 is the A/D change-over circuit of 16Bit.
Information process unit 23 is used for apart from the distance on ground, the lead of slant angle sensor 12 transmissions and the angle between the surface level, obtaining the distance on lead sag perigee distance ground at the point of fixity on the tower bar according to the distance between the tower bar, lead; Conductor temperature, lead ambient atmosphere temperature according to temperature sensor 13 sends are obtained the lead temperature rise, set up the corresponding relation between current in wire and the lead temperature rise; And after the current in wire packing with angle between corresponding relation, lead and the surface level between distance, conductor temperature and lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground and 22 transmissions of A/D change-over circuit, be sent to information carrying means 4.
In the practical application, harvester 1 also comprises the microclimate station, is used to gather the atmospheric information that comprises atmospheric temperature, atmospheric pressure, air quantity and wind speed, rainfall and rain speed, and atmospheric information is sent to information process unit 23.The current in wire that angle between corresponding relation, lead and the surface level of atmospheric information between distance, conductor temperature and lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground that information process unit 23 also is used for the microclimate station is sent and A/D change-over circuit 22 send is packaged as package information; That is to say that package information also comprises atmospheric information.
As shown in Figure 4, electric supply installation 3 comprises electricity-fetching module 31, voltage transitions and circuit protection module 32; Wherein,
Electricity-fetching module 31 is used to adopt way of electromagnetic induction, from the transmission line of electricity power taking, presses signal and current signal to be sent to voltage transitions and circuit protection module 32 institute's power taking.
Voltage transitions and circuit protection module 32 are used for converting the voltage signal that electricity-fetching module 31 sends into output power constant 5V DC voltage by high voltage; Be used for current signal, send run signal or cut-off signals to monitoring main frame 2 according to electricity-fetching module 31 transmissions.
During practical application, according to the current signal that electricity-fetching module 31 sends, the start-up circuit protection absorbs superfluous electric flux through thyristor controlled resistance when electric current increases suddenly, sends cut-off signals to monitoring main frame 2 simultaneously; When electric current does not increase suddenly, send run signal to monitoring main frame 2.
As shown in Figure 5, information carrying means 4 comprises wireless radio frequency circuit 41, GPRS/CDMA module 42; Wherein,
Wireless radio frequency circuit 41 is used for wireless mode, and the package information that information process unit 23 is sent is forwarded to Surveillance center 5.
GPRS/CDMA module 42 is used for the mode with GPRS/CDMA, and the package information that information process unit 23 is sent is forwarded to Surveillance center 5.
As shown in Figure 6, Surveillance center 5 comprises switch 51 and server 52; Wherein,
Switch 51 is used for the package information that information carrying means 4 is transmitted is configured to the server 52 of LAN.
In the practical application; Package information be between corresponding relation, lead and the surface level between distance, conductor temperature, lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground of different regions or non-commensurate angle, through pretreated current in wire; Exchange 51 is configured in the respective server 52 in the corresponding LAN according to different regions or non-commensurate under the package information.
In the practical application, switch has two kinds of built-in switch and external switches, and built-in switch is installed in the server, and external switch communicates through serial ports and server.
Server 52 is used for preset alarming value, sets up early warning mechanism; According to the package information of switch 51 dispensings, the transmission capacity of real-time estimate lead sag variation tendency and transmission line of electricity.
In the practical application, can also consult angle between corresponding relation, lead and the surface level between distance, conductor temperature, lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground through server 52, through the historical record of pretreated current in wire etc.
In sum, more than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a lead sag on-line monitoring system is characterized in that, said system comprises signal pickup assembly, monitoring main frame, electric supply installation, information carrying means and Surveillance center; Wherein,
Harvester is used for the angle between current in wire, conductor temperature, lead ambient atmosphere temperature, lead and the surface level of the transmission line of electricity of being gathered is sent to the monitoring main frame;
The monitoring main frame; Be used for the current in wire that harvester sends is carried out pre-service; Apart from the distance on ground, the lead of harvester transmission and the angle between the surface level, obtain the distance on lead sag perigee distance ground at the point of fixity on the tower bar according to the distance between the tower bar, lead; Conductor temperature, lead ambient atmosphere temperature according to harvester sends are obtained the lead temperature rise, set up the corresponding relation between current in wire and the lead temperature rise; And, be sent to information carrying means with the angle between corresponding relation, lead and the surface level between distance, conductor temperature, lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground, through after pretreated current in wire is packaged as package information;
Electric supply installation is used for power taking from the transmission line of electricity, and the voltage that power taking obtains is carried out voltage transitions; Send run signal or cut-off signals according to the size of current in the transmission line of electricity to the monitoring main frame;
Information carrying means is used for wireless mode or GPRS/CDMA mode, and the package information that the monitoring main frame is sent is forwarded to Surveillance center;
Surveillance center is used for the package information that information carrying means is transmitted is configured to different local area; Simultaneously, according to the transmission capacity of package information real-time estimate lead sag variation tendency and transmission line of electricity; Also be used for preset alarming value, set up early warning mechanism.
2. lead sag on-line monitoring system according to claim 1 is characterized in that said harvester comprises current sensor, bi-axial tilt angle transducer and temperature sensor; Wherein,
Current sensor is used to gather the current in wire of transmission line of electricity, and current in wire is sent to said monitoring main frame;
The bi-axial tilt angle transducer is used to measure the angle between lead and the surface level, and the angle between lead and the surface level is sent to said monitoring main frame;
Temperature sensor is used to measure conductor temperature, lead ambient atmosphere temperature, and conductor temperature and lead ambient atmosphere temperature are sent to said monitoring main frame.
3. lead sag on-line monitoring system according to claim 2 is characterized in that said monitoring main frame comprises filtering circuit, A/D change-over circuit and information process unit; Wherein,
Filtering circuit is used for the current in wire that said current sensor sends is carried out Filtering Processing, and the current in wire after handling is sent to the A/D change-over circuit;
The A/D change-over circuit is used for current in wire that filtering circuit is sent, convert digital quantity into by analog quantity after, be sent to information process unit;
Information process unit is used for apart from the distance on ground, the lead of said slant angle sensor transmission and the angle between the surface level, obtaining the distance on lead sag perigee distance ground at the point of fixity on the tower bar according to the distance between the tower bar, lead; Conductor temperature, lead ambient atmosphere temperature according to said temperature sensor sends are obtained the lead temperature rise, set up the corresponding relation between current in wire and the lead temperature rise; And the distance on lead sag perigee distance ground set up the corresponding relation between current in wire and the lead temperature rise; And after the current in wire packing with angle between corresponding relation, lead and the surface level between distance, conductor temperature and lead ambient atmosphere temperature, current in wire and the lead temperature rise on lead sag perigee distance ground and the transmission of A/D change-over circuit, be sent to said information carrying means.
4. lead sag on-line monitoring system according to claim 3; It is characterized in that; Said harvester also comprises the microclimate station, is used to gather the atmospheric information that comprises atmospheric temperature, atmospheric pressure, air quantity and wind speed, rainfall and rain speed, and atmospheric information is sent to said information process unit; Package information after the said information process unit packing also comprises atmospheric information.
5. lead sag on-line monitoring system according to claim 1 is characterized in that said electric supply installation comprises electricity-fetching module, voltage transformation module and holding circuit; Wherein,
Electricity-fetching module is used to adopt way of electromagnetic induction, from the transmission line of electricity power taking, presses signal and current signal to be sent to voltage transitions and circuit protection module institute's power taking;
Voltage transitions and circuit protection module are used for converting the voltage signal that electricity-fetching module sends into output power constant 5V DC voltage by high voltage; Be used for current signal, send run signal or cut-off signals to said monitoring main frame according to the electricity-fetching module transmission.
6. lead sag on-line monitoring system according to claim 3 is characterized in that said information carrying means comprises wireless radio frequency circuit, GPRS/CDMA module; Wherein,
Wireless radio frequency circuit is used for wireless mode, and the package information that said information process unit is sent is forwarded to said Surveillance center;
The GPRS/CDMA module is used for the mode with GPRS/CDMA, and the package information that said information process unit is sent is forwarded to said Surveillance center.
7. according to claim 3 or 4 described lead sag on-line monitoring systems, it is characterized in that said Surveillance center comprises switch and server; Wherein,
Switch is used for the package information that said information carrying means is transmitted is configured to the server of LAN;
Server is used for preset alarming value, sets up early warning mechanism; According to the package information of switch dispensing, the transmission capacity of real-time estimate lead sag variation tendency and transmission line of electricity.
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| CN2010102496910A CN101915889B (en) | 2010-08-10 | 2010-08-10 | Conductor sag on-line monitoring system |
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| CN103292659B (en) * | 2013-05-02 | 2016-06-15 | 西安工程大学 | Arc sag of wire of power transmission line measuring method based on angular transducer |
| CN103810077A (en) * | 2013-08-24 | 2014-05-21 | 国家电网公司 | Integrated intelligent monitoring system for leads |
| CN103995209A (en) * | 2014-04-04 | 2014-08-20 | 国家电网公司 | Detection method for adhesion state of 220kV bundled conductor |
| CN104006793A (en) * | 2014-06-17 | 2014-08-27 | 国家电网公司 | Sag real-time monitoring device |
| CN104318118B (en) * | 2014-10-31 | 2017-06-20 | 国家电网公司 | Aerial condutor sag real-time computing technique under a kind of hot weather |
| CN105974423A (en) * | 2016-04-27 | 2016-09-28 | 中国科学技术大学先进技术研究院 | Power transmission line sag measurement method based on ultrasonic distance measuring and system thereof |
| CN108195329A (en) * | 2017-12-25 | 2018-06-22 | 安徽博达通信工程监理有限责任公司 | A kind of detection communication system of cable arc sag height |
| CN110260911A (en) * | 2018-03-12 | 2019-09-20 | 中国电力科学研究院有限公司 | A kind of large-section lead arc sag on-line monitoring system |
| CN112508453A (en) * | 2020-12-22 | 2021-03-16 | 安徽康能电气有限公司 | Smart line multi-element sensing method and system based on national net core |
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| CN101038186A (en) * | 2006-06-10 | 2007-09-19 | 伊仁图太 | Device for online warning freezing and swing of transmission line |
| CN101586971A (en) * | 2009-06-19 | 2009-11-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Transmission line ice-coating pre-warning and dynamic compatibilization system on-line monitoring device |
| CN101603850A (en) * | 2009-06-29 | 2009-12-16 | 中国电力工程顾问集团中南电力设计院 | A kind of extra high voltage transmission line online monitoring system |
| CN201819698U (en) * | 2010-07-26 | 2011-05-04 | 吕强 | System for monitoring icing state of overhead cables |
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Address after: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301 Patentee after: BEIJING SHUIMU YUANHUA ELECTRIC Co.,Ltd. Address before: 100094 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301 Patentee before: BEIJING SEMEUREKA ELECTRICS Co.,Ltd. |