CN101614536B - Icing online monitoring system and online monitoring method of power transmission circuit - Google Patents
Icing online monitoring system and online monitoring method of power transmission circuit Download PDFInfo
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- CN101614536B CN101614536B CN 200810127187 CN200810127187A CN101614536B CN 101614536 B CN101614536 B CN 101614536B CN 200810127187 CN200810127187 CN 200810127187 CN 200810127187 A CN200810127187 A CN 200810127187A CN 101614536 B CN101614536 B CN 101614536B
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Abstract
The invention provides a icing online monitoring device of a power transmission circuit, which comprises an insulator string tension monitoring unit, an insulator string wind deviation angle monitoring unit, an insulator string suspending angle monitoring unit, a lead inclined angle monitoring unit, a meteorological environment monitoring unit, a video monitoring unit, a main control unit and a bus communication network, wherein the main control unit and all monitoring units are connected and respectively provided with power supply controllers comprising solar energy power supplies or high-voltage line sensing power supplies; the main control unit is provided with a main control module and connected with a main station by INTERNET network equipment; and all the monitoring units are connected with the main control module by the bus communication network. The invention also provides an online monitoring method of a power transmission circuit. The prior problem of large deviation of an insulator string wind deviation angle calculated by the monitored wind direction and the wind speed is prevented by increasing the insulator string wind deviation angle monitoring unit and the insulator string suspending angle monitoring unit so that the calculation of the icing thickness is more accurate.
Description
Technical field
The present invention relates to monitoring system and monitoring method, particularly a kind of power transmission sequence icing on-line monitoring system and monitoring method thereof.
Background technology
At present, the calculating of its ice covering thickness of power transmission sequence icing on-line monitoring system all adopts the monitoring of insulator chain pulling force and local weather environment monitoring (comprising wind direction, wind speed, temperature, humidity and the situation of raining) to calculate ice covering thickness at overhead line structures.
Under the normal condition, suspension insulator is stressed should to be vertically downward, yet since with the influence of the wind force components of lead vertical-horizontal direction, can cause insulator chain to produce angle along lead vertical-horizontal direction and vertically downward direction, this angle is called angle of wind deflection; Because suspension clamp both sides wire tension is unbalanced, can cause insulator chain to produce angle along lead direction and direction vertically downward in addition, this angle is called the angle of dangling.Tradition icing monitoring scheme is as follows:
1. measure suffered pulling force P on the insulator chain in the insulator upper end with pulling force sensor;
2. at iron tower wind direction, air velocity transducer are installed, are measured wind direction and the wind speed numerical value of iron tower locality;
3. use the blast estimation equation of Electric Design department use, according to calculation of parameter blast P1 such as wind direction, air speed data, this iron tower vertical span, diameter of wire and lead division numbers;
4. ignore the influence at the angle of dangling;
5. establishing the suffered gravity vertically downward of insulator is P2, according to the mechanics formula:
P×P＝P1×P1+P2×P2
6. be located at that original gravity vertically downward is P3 under the calm and stormless situation; Icing weight P4=P2-P3 then.
7. establishing this iron tower vertical span is L, the conductor length coefficient is that B is (because lead has camber line, so conductor length is longer than vertical span, but this coefficient is not necessarily accurate, estimates according to installation situation), the lead division number is N, diameter of wire is D, and lead proportion is A, and icing proportion is C (generally calculating according to 0.9), the equivalent thickness of icing is M, and following formula is then arranged:
P4＝C×L×B×N×π×((M+D/2)×(M+D/2)-(D/2×D/2))
Calculate ice covering thickness M thus.
The problem that this scheme exists is:
1, therefore the angle of dangling of causing owing to the difference of having ignored iron tower both sides wire tensions calculates not accurate enough;
2, being subjected to measure at present the wind direction technology limits, the wind direction data of surveying have only 16 directions (east, south, west, north, northeast, the southeast, northwest, southwest, northeast by east, northeast by north, southeast by east, southeast by south, NW b W, NW b N, southwest by west, swbs), and therefore the wind direction data of surveying also are inaccurate.
3, present employed blast computing formula is the estimation equation that Electric Design department uses, and a lot of parameters all approximately estimate in this formula, so the result of calculation of blast is more inaccurate.
See according to the effect of implementing in actual items, the result of calculation of blast estimation equation is far longer than the increase (comparing with the value of thrust of normal condition) of the insulator tension measured value of actual measurement, its reason is that this blast estimation equation is that Electric Design department is used for designing use, and is very inaccurate.
Summary of the invention
The objective of the invention is to overcome the defective that existing technology exists, a kind of power transmission sequence icing on-line monitoring system and monitoring method thereof that increases substantially the icing measuring accuracy is provided.
For achieving the above object, on-Line Monitor Device provided by the invention, comprise several insulator chain pulling force monitoring means that are installed on the power transmission sequence, insulator chain angle of wind deflection monitoring means, the insulator chain angle monitoring means that dangles, the weather environment monitoring means, the video monitoring unit, one main control unit and a bus communication net, main control unit and each monitoring means are respectively equipped with power-supply controller of electric and the bus communication module of sun-generated electric power or hi-line induction power supply formation, main control unit is provided with main control module and the INTERNET network communication apparatus that is used for linking to each other with main website, main control unit links to each other respectively with each monitoring means by bus communication module, it is characterized in that: also comprise the insulator chain angle monitoring means that dangles, insulator chain angle of wind deflection monitoring means is installed on the horizontal direction vertical with the power transmission sequence lead, the insulator chain angle monitoring means that dangles is installed in along on the horizontal direction of lead trend, insulator chain angle of wind deflection monitoring means and the insulator chain angle monitoring means that dangles is respectively equipped with power-supply controller of electric and the bus communication module that sun-generated electric power or hi-line induction power supply constitute, and insulator chain angle of wind deflection monitoring means and the insulator chain angle monitoring means that dangles links to each other with the main control module by bus communication module.
Power transmission sequence icing on-line monitoring system of the present invention, wherein said bus communication net adopts RS-485 bus or CANBUS bus or short-distance wireless communication net.
Power transmission sequence icing on-line monitoring system of the present invention, wherein said INTERNET network communication apparatus adopts GSM/GPRS/CDMA communication module or wireless broadband equipment or electric power cat.
Power transmission sequence icing on-line monitoring system of the present invention, wherein said weather environment monitoring means comprises wind direction, wind speed, temperature, humidity and the monitoring modular that rains.
Power transmission sequence icing on-line monitoring system of the present invention, wherein said bus communication net are replaced and are adopted wireless short-distance communication network, bus communication module to replace employing short-distance wireless module.
Power transmission sequence icing on-line monitoring system of the present invention, wherein said wireless short-distance communication network (7) adopt 433M wireless telecommunications net.
The method of the power transmission sequence icing on-line monitoring of monitoring system of the present invention, this method arranges insulator chain pulling force monitoring means, insulator chain angle of wind deflection monitoring means, the insulator chain angle monitoring means that dangles, the weather environment monitoring means, the video monitoring unit, one main control unit and a bus communication net or short-distance wireless communication net, main control unit and each monitoring means are respectively equipped with power-supply controller of electric and bus communication module, main control unit is provided with main control module and INTERNET network communication apparatus, implement collection and the transmission of icing online monitoring data, described main control unit is carried out following steps:
1) connects main control unit and power-supply controller of electric, INTERNET network communication apparatus, bus communication module (being the short-distance wireless module), connect sun-generated electric power and/or hi-line induction power supply, start main control unit;
2) initialization serial ports, bus communication module (being the short-distance wireless module) and the initialization of INTERNET network communication apparatus are carried out the INTERNET network connection with main website;
3) main control module judges whether to gather each monitoring means data time, if then change next step, then changes step 6) if not;
4) by bus communication module (being the short-distance wireless module), call each monitoring means Monitoring Data successively according to the monitoring means number, then call the data of next module if receive data that this module is beamed back, if confiscate return data, then call these monitoring means data again, call at most 3 times, if still can not receive return data, then with this monitoring means data extreme higher position 1, change the data of recruiting next monitoring means, finish until calling;
5) do you judge that the data call are whether out-of-limit and need to report to the police? if the out-of-limit supplemental characteristic of then packing mails to main website by INTERNET equipment with data, carries out next step; If not, directly next step;
6) whether arrive the transmission data time to main website? if then packing data is carried out next step, if not, then change step 8);
7) send data by described INTERNET network to main website, main website receives this data;
8) whether receive main website calling data command, if, then carry out next step, then change step 10) if not;
9) send data by described communication module and INTERNET network to main website, main website receives this data;
10) return the 4th) step;
Each monitoring means is carried out following steps:
1) connects certain monitoring means and power-supply controller of electric, bus communication module (being the short-distance wireless module), sensor, connect sun-generated electric power and/or hi-line induction power supply, start monitoring means and carry out initialization;
2) whether arrive the image data time, if then read sensor data and change next step if not, are then directly changeed step 4);
3) whether judgment data is out-of-limit, if then change next step, then judges if not and changes next step;
4) judge whether the calling data command of receiving that main control unit is sent? if then change next step, then change step 6) if not;
5) by bus communication module (being the short-distance wireless module), initiatively send alert data to main control unit;
6) judge that confiscating main control unit calls the duration of data command whether to surpass certain hour, if then carry out next step, if not, then changes step 8);
7) reinitialize bus communication module (being the short-distance wireless module);
8) return step 2).
The method of the power transmission sequence icing on-line monitoring of monitoring system of the present invention, wherein said INTERNET network communication apparatus adopts GSM/GPRS/CDMA communication module or wireless broadband equipment or electric power cat, and wherein said bus communication net is RS-485 bus communication net or CANBUS bus communication net.
The method of the power transmission sequence icing on-line monitoring of monitoring system of the present invention, wherein said bus communication net is replaced and is adopted the wireless short-distance communication network, bus communication module is replaced and is adopted short-distance wireless module, wherein said wireless short-distance communication network to adopt 433M wireless short-distance communication network.
The method of the power transmission sequence icing on-line monitoring of monitoring system of the present invention, wherein said icing Monitoring Data comprises ice covering thickness, described ice covering thickness draws as follows:
(1) rated wind pressure value P1=P3 * tan α, wherein the gravity vertically downward that bears of insulator chain is P3, and the angle of wind deflection that side gets is α, and the angle of dangling is β;
(2) the uneven pulling force P2=P3 of the lead of calculating insulator chain both sides * tan β;
(3) calculating the gravity vertically downward that insulator bears according to following formula is P3, and wherein the pulling force that bears of insulator is P:
P×P＝P1×P1+P2×P2+P3×P3；
P×P＝P3×P3×tanα×tanα+P3×P3×tanβ×tanβ+P3×P3；
P×P＝(tanα×tanα+tanβ×tanβ+1)×P3×P3；
(4) calculate icing weight P5=P3-P4, wherein: original gravity vertically downward is P4 under the calm and stormless situation;
(5) by formula P5=C * L * B * N * π * (equivalent thickness that (M+D/2) * (M+D/2)-(D/2 * D/2)) draws icing is M, and wherein: the iron tower vertical span is L, and the conductor length coefficient is B, the lead division number is N, diameter of wire is D, and lead proportion is A, and icing proportion is C.
The advantage of power transmission sequence icing on-line monitoring system provided by the invention and monitoring method thereof is: owing to adopt insulator chain angle of wind deflection and the angle monitoring means that dangles, can directly calculate on the insulator chain the uneven pulling force of blast and insulator chain both sides lead, thereby make the ice covering thickness calculating on the power transmission sequence lead more accurate, this is that like product is irreplaceable.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, in the hope of purpose of the present invention, feature and advantage are obtained more deep understanding.
Description of drawings
Fig. 1 is power transmission sequence icing on-line monitoring system block diagram of the present invention;
Fig. 2 is power supply device of the present invention;
Fig. 3 is the output terminal of power supply device of the present invention;
Fig. 4 is plug and its rainfall monitoring module of power supply device of the present invention;
Fig. 5 is icing on-line monitoring system scheme of installation;
Fig. 6 is main controller module of the present invention;
Fig. 7 is monitoring modular of the present invention;
Fig. 8 is the system chart of embodiment of the invention main monitoring unit;
Fig. 9 is the system chart of each monitoring unit of the embodiment of the invention;
Figure 10 is the data flowchart of main control unit among the present invention;
Figure 11 is the data flowchart of each monitoring means among the present invention.
Embodiment
Below in conjunction with accompanying drawing detailed description embodiment.
Referring to Fig. 1, comprise insulator chain pulling force monitoring means 1, insulator chain angle of wind deflection monitoring means 2, insulator chain dangle angle monitoring means 3, weather environment monitoring means 4, video monitoring unit 5, a main control unit 6 and a bus communication net 7 in the embodiments of the invention, the bus communication net can be RS-485 bus or CANBUS bus or 433M wireless telecommunications net.Main control unit 6 links to each other with each monitoring means 1-5 and is respectively equipped with power-supply controller of electric 13 and the bus communication module 11 that is made of sun-generated electric power or hi-line induction power supply, main control unit 6 is provided with main control module 12 and the INTERNET network communication apparatus 14 that is used for linking to each other with main website, the INTERNET network equipment 14 can be the GSM/GPRS/CDMA communication module, also can be wireless broadband equipment or electric power cat.Each monitoring means 1-5 and main control unit 6 are respectively equipped with bus communication module 11, link to each other by bus communication module 11 between each monitoring means 1-5 and the main control module 12.
Referring to Fig. 1, adopt 433M wireless telecommunications net to form high voltage circuit wire icing monitoring system below and illustrate for embodiment.In the present embodiment, the bus communication net is replaced and is adopted the wireless short-distance communication network, and bus communication module 11 is replaced and adopted the short-distance wireless communication module.
Wire icing with wave on-line monitoring system and constituted by several subsystems: main control unit 6, insulator chain pulling force monitoring means 1, insulator chain angle of wind deflection monitoring means 2, insulator chain dangle angle monitoring means 3, weather environment monitoring means 4 and 5 six parts of video monitoring means.Dangle angle monitoring means 3, weather environment monitoring means 4, video monitoring means 5 of main control unit 6, insulator chain pulling force monitoring means 1, insulator chain angle of wind deflection monitoring means 2, insulator chain is installed in (being earth terminal) on the power transmission sequence shaft tower, and they can take the sun-generated electric power power supply together.
Referring to Fig. 5, X is the horizontal direction vertical with the lead direction, Y is the horizontal direction along the lead trend, Z is direction vertically downward, 20 is insulator chain pulling force monitoring means, 21 is the overhead line structures cross-arm, 22 are insulator chain angle of wind deflection and the angle monitoring means that dangles, 23 is high-voltage conducting wires, 24 is suspension clamp, and 25 is insulator chain, wherein, insulator chain angle of wind deflection 22 is installed on the horizontal direction vertical with the power transmission sequence lead (X), and the insulator chain angle monitoring means 22 that dangles is installed in along on the horizontal direction (Y) of lead trend.Insulator chain angle of wind deflection and the angle monitoring means that dangles both can be installed in the shaft tower end (hold) of insulator chain, also can be installed in the lower end (high-pressure side) of insulator chain.
Referring to Fig. 2, Fig. 3, Fig. 4, the power supply power supply of each several part can be finished by solar cell, it is by connecting uc3906 chip and the corresponding pin of Im393 chip, form solar cell for supplying power device 1301, by connecting AP1501 chip respective pin, form power output end 1303, to come with the respective pin of the output terminal 1303 of sun-generated electric power be that electrical appliance is powered to the pin by attachment plug 1304 again.It is each unit power supply that plug 1304 usefulness leads by power supply couple together the attaching plug in power supply and main control unit and the monitoring means.By corresponding pin rainfall monitoring module 1302 is linked to each other with this power module.Referring to Fig. 1, dangle angle monitoring means 3, weather environment monitoring means 4, video monitoring means 5 of main control unit 6, insulator chain pulling force monitoring means 1, insulator chain angle of wind deflection monitoring means 2, insulator chain is installed in (being earth terminal) on the power transmission sequence shaft tower, and they can take the sun-generated electric power power supply together.
Referring to Fig. 6, the main control module in the main control unit is with MEGA64 or MEGA128 single-chip microcomputer 1201 and nFR905 module 1101, and the corresponding pin of the GSM/GPRS module 1401 of MC55 couples together.It is connected power supply with attaching plug with lead by plug.And insert SIM card 8 therein.Wherein nRF905 1101 is monolithic radio frequency emitter chip, can finish the work of handling prefix and CRT (CRC) automatically, can finish Manchester's cde/decoding automatically by hardware in the sheet, use the SPI interface to link to each other with the SPI interface of main controller module, be used for transmitting and receiving data.NRF905 1101 adopts VLSI ShockBurst technology, the ShockBurst technology makes nRF905 1101 that high-speed data transmission can be provided, by being handled, the high speed signal relevant with the RF agreement be put in the chip, nRF905 1101 offers SPI interface of microcontroller of application, and the interface rate that speed is set by microcontroller oneself determines.NRF905 1101 reduces digital application part by the ShockBurst mode of operation when RF connects with maximum rate speed is reduced in the average current consumption in the application.ANT1 and ANT2 output pin provide stable RF output to antenna.These two pin must have the DC channel that is connected to VDD_PA, by the RF choking coil, perhaps by the bipolar central point of antenna.
Referring to Fig. 7, the monitoring modular in the monitoring means couples together NRF905 106 corresponding pins with MEGA8 chip 105, makes it by NRF905 module 106 and the mutual communication of Main Control Unit.Referring to Fig. 1, all carry out communication by the NRF905 module between main control unit and each monitoring means, a plurality of NRF905 modules can be formed a short-distance wireless communication net 7.Each monitoring means in this network all can carry out communication with main control unit.Because the position difference that each unit is placed, what have is placed on (high-pressure side) on the lead, what have is placed on (earth terminal) on the shaft tower, current potential between them is not wait, directly line carries out communication, therefore uses the short-distance wireless communication mode, thereby various power transmission sequence on-line monitoring functions are combined together, system configuration is also more flexible, can increase and decrease the various monitoring subelements of system arbitrarily.
Referring to Fig. 8, MEGA64 single-chip microcomputer 1201 is connected with Internet network communication apparatus 18 by rs-232 standard.RS-232 is defined as a kind of single-ended standard that increases communication distance in the low rate serial communication.RS-232 takes uneven transmission mode, i.e. so-called single-ended communication.Wherein, when using the MC55 chip, utilize the GSM/GPRS module to be to use asynchronous interface to abide by the ITU-TV.24 agreement and finish data transmission.And MEGA64 single-chip microcomputer 1201 is connected with short-distance wireless communication module 11 by SPI, main controller module is powered by solar cell, and solar cell receives sun power by solar panels 15, the storage of solar energy that receives is powered by DC/DC module 17 to electric battery 16 again.
Referring to Fig. 9, in each monitoring means, monitoring system obtains simulating signal by various sensors 107, simulating signal is carried out data-switching by A/D converter, the digital signal of conversion is handled by MEGA8 single-chip microcomputer 105, and MEGA8 single-chip microcomputer 105 links to each other with Nrf905 module 106 by SPI.And its power supply is to power by solar cell, and solar cell receives sun power by solar panels 15, and the storage of solar energy that receives is finished by DC/DC module 17 to electric battery 16 again.
Adopt insulator chain angle of wind deflection and the angular measurement technology of dangling, can solve the error problem that blast calculates, the influence at the angle of also having considered simultaneously to dangle.
Ice covering thickness draws as follows:
(1) rated wind pressure value P1=P3 * tan α, wherein the gravity vertically downward that bears of insulator chain is P3, and the angle of wind deflection that side gets is α, and the angle of dangling is β;
(2) the uneven pulling force P2=P3 of the lead of calculating insulator chain both sides * tan β;
(3) calculating the gravity vertically downward that insulator bears according to following formula is P3, and wherein the pulling force that bears of insulator is P:
P×P＝P1×P1+P2×P2+P3×P3；
P×P＝P3×P3×tanα×tanα+P3×P3×tanβ×tanβ+P3×P3；
P×P＝(tanα×tanα+tanβ×tanβ+1)×P3×P3；
(4) calculate icing weight P5=P3-P4, wherein: original gravity vertically downward is P4 under the calm and stormless situation;
(5) by formula P5=C * L * B * N * π * (equivalent thickness that (M+D/2) * (M+D/2)-(D/2 * D/2)) draws icing is M, and wherein: the iron tower vertical span is L, and the conductor length coefficient is B, the lead division number is N, diameter of wire is D, and lead proportion is A, and icing proportion is C.
Below in conjunction with description of drawings and specific embodiment monitoring method of the present invention is described in further detail.
Referring to Figure 10, main control unit adopts MEGA64CPU, and the INTERNET network equipment adopts SIMENS MC55GPRS module, and wireless communication module adopts the nrf905 wireless communication module, and power-supply controller of electric adopts sun-generated electric power.
In the present embodiment, the step of main control unit execution is:
1) connects main control unit and power-supply controller of electric, SIMENS MC55GPRS module, nrf905 wireless communication module, connect sun-generated electric power, start main control unit;
2) SPI interface, short-distance wireless module, serial ports and SIMENS MC55 GPRS module initialization are carried out the INTERNET network connection with main website;
3) main control module judges whether to gather each monitoring means data time, if then change next step, then changes step 6) if not;
4) by the nrf905 wireless communication module, call each monitoring means Monitoring Data successively according to the monitoring means number, then call the data of next module if receive data that this module is beamed back, if confiscate return data, then call these monitoring means data again, call at most 3 times, if still can not receive return data, then with this monitoring means data extreme higher position 1, change the data of recruiting next monitoring means, finish until calling;
5) do you judge that the data call are whether out-of-limit and need to report to the police? if the out-of-limit supplemental characteristic of then packing mails to main website by SIMENSMC55 GPRS module with data, carries out next step; If not, directly next step;
6) whether arrive the transmission data time to main website? if then packing data is carried out next step, if not, then change step 8);
7) send data by described INTERNET network to main website, main website receives this data;
8) whether receive main website calling data command, if, then carry out next step, then change step 10) if not;
9) send data by described SIMENS MC55 GPRS module and INTERNET network to main website, main website receives this data;
10) return the 4th) step.
Referring to Figure 11, dangle angle monitoring means 3, weather environment monitoring means 4 and 5 six monitoring means of video monitoring means of insulator chain pulling force monitoring means 1, insulator chain angle of wind deflection monitoring means 2, insulator chain adopt MEGA8 CPU, wireless communication module adopts the nrf905 wireless communication module, and power supply adopts sun-generated electric power or hi-line induction power supply.The step that each monitoring means is carried out is:
1) connects certain monitoring means and power-supply controller of electric, nrf905 wireless communication module, sensor, connect sun-generated electric power and/or hi-line induction power supply, start monitoring means and carry out initialization;
2) whether arrive the image data time, if then read sensor data and change next step if not, are then directly changeed step 4);
When 3) reaching-5 ℃～3 ℃ in environment temperature, whether judgment data is out-of-limit, if then change next step, then judges if not and changes next step;
4) judge whether the calling data command of receiving that main control unit is sent? if then change next step, then change step 6) if not;
5) by the nrf905 wireless transport module, initiatively send alert data to main control unit;
6) judge that confiscating main control unit calls the duration of data command whether to surpass 2 minutes, if then carry out next step, if not, then changes step 8);
7) reinitialize the nrf905 wireless communication module;
8) return step 2).
Embodiment recited above is described preferred implementation of the present invention, is not that the spirit and scope of the present invention are limited.Under the prerequisite that does not break away from design concept of the present invention; various modification and improvement that this area ordinary person makes technical scheme of the present invention; all should drop into protection scope of the present invention, the technology contents that the present invention asks for protection all is documented in claims.
Claims (10)
1. power transmission sequence icing on-line monitoring system, it is characterized in that: comprise several insulator chain pulling force monitoring means (1) that are installed on the power transmission sequence, insulator chain angle of wind deflection monitoring means (2), the insulator chain angle monitoring means (3) that dangles, weather environment monitoring means (4), video monitoring means (5), one main control unit (6) and a bus communication net (7), main control unit (6) and described insulator chain pulling force monitoring means (1), insulator chain angle of wind deflection monitoring means (2), the insulator chain angle monitoring means (3) that dangles, weather environment monitoring means (4), video monitoring means (5) is respectively equipped with power-supply controller of electric (13) and the bus communication module (11) of sun-generated electric power or hi-line induction power supply formation, main control unit (6) is provided with main control module (12) and the INTERNET network communication apparatus (14) that is used for linking to each other with main website, main control unit (6) is by bus communication module (11) and described insulator chain pulling force monitoring means (1), insulator chain angle of wind deflection monitoring means (2), the insulator chain angle monitoring means (3) that dangles, weather environment monitoring means (4), video monitoring means (5) links to each other respectively, described insulator chain angle of wind deflection monitoring means (2) is installed on the horizontal direction vertical with the power transmission sequence lead, and the described insulator chain angle monitoring means (3) that dangles is installed in along on the horizontal direction of lead trend.
2. power transmission sequence icing on-line monitoring system according to claim 1 is characterized in that: wherein said bus communication net employing RS-485 bus or CANBUS bus or short-distance wireless communication net.
3. power transmission sequence icing on-line monitoring system according to claim 2 is characterized in that: wherein said INTERNET network communication apparatus (14) employing GSM/GPRS/CDMA communication module or wireless broadband equipment or electric power cat.
4. power transmission sequence icing on-line monitoring system according to claim 3, it is characterized in that: wherein said weather environment monitoring means (4) comprises wind direction, wind speed, temperature, humidity and the monitoring modular that rains.
5. power transmission sequence icing on-line monitoring system according to claim 2 is characterized in that: wherein said bus communication net replacement employing short-distance wireless communication net (7), bus communication module (11) replacement employing short-distance wireless module.
6. power transmission sequence icing on-line monitoring system according to claim 5 is characterized in that: wherein said short-distance wireless communication net (7) employing 433M wireless telecommunications net.
7. an employing is by the method for the power transmission sequence icing on-line monitoring of arbitrary described monitoring system among the claim 1-6, this method arranges insulator chain pulling force monitoring means (1), insulator chain angle of wind deflection monitoring means (2), the insulator chain angle monitoring means (3) that dangles, weather environment monitoring means (4), video monitoring means (5), one main control unit (6) and a bus communication net (7), main control unit (6) and described insulator chain pulling force monitoring means (1), insulator chain angle of wind deflection monitoring means (2), the insulator chain angle monitoring means (3) that dangles, weather environment monitoring means (4), video monitoring means (5) is respectively equipped with power-supply controller of electric (13) and bus communication module (11), main control unit (6) is provided with main control module (12) and INTERNET network communication apparatus (14), implement collection and the transmission of icing online monitoring data, it is characterized in that: wherein, main control unit is carried out following steps:
1) connects main control unit and power-supply controller of electric, INTERNET network communication apparatus, bus communication module, connect sun-generated electric power or hi-line induction power supply, start main control unit;
2) initialization serial ports, bus communication module and the initialization of INTERNET network communication apparatus are carried out the INTERNET network connection with main website;
3) main control module judges whether to gather each monitoring means data time, if then change next step, then changes step 6) if not;
4) pass through bus communication module, call each monitoring means Monitoring Data successively according to the monitoring means number, then call the data of next monitoring means if receive data that this monitoring means is beamed back, if confiscate return data, then call these monitoring means data again, call at most 3 times, if still can not receive return data, then with this monitoring means data extreme higher position 1, change the data of calling next monitoring means together, finish until calling;
5) do you judge that the data call are whether out-of-limit and need to report to the police? if the out-of-limit supplemental characteristic of then packing mails to main website by the INTERNET network communication apparatus with data, carries out next step; If not, directly next step;
6) whether arrive the transmission data time to main website? if then packing data is carried out next step, if not, then change step 8);
7) send data by described INTERNET network communication apparatus to main website, main website receives this data;
8) whether receive main website calling data command, if, then carry out next step, then change step 10) if not;
9) send data by described communication module and INTERNET network communication apparatus to main website, main website receives this data;
10) return the 4th) step;
Each monitoring means is carried out following steps:
1) connects certain monitoring means and power-supply controller of electric, bus communication module, sensor, connect sun-generated electric power or hi-line induction power supply, start monitoring means and carry out initialization;
2) whether arrive the image data time, if then read sensor data and change next step if not, are then directly changeed step 4);
3) whether judgment data is out-of-limit, if then send alert data by bus communication module to primary module, then judges if not and changes next step;
4) judge whether the calling data command of receiving that main control unit is sent? if then change next step, then change step 6) if not;
5) by bus communication module, initiatively send alert data to main control unit;
6) judge that confiscating main control unit calls the duration of data command whether to surpass certain hour, if then carry out next step, if not, then changes step 8);
7) reinitialize bus communication module;
8) return step 2).
8. method according to claim 7, it is characterized in that: wherein said INTERNET network communication apparatus (14) adopts GSM/GPRS/CDMA communication module or wireless broadband equipment or electric power cat, and wherein said bus communication net (7) is RS-485 bus communication net or CANBUS bus communication net.
9. method according to claim 8, it is characterized in that: wherein said bus communication net is replaced and is adopted short-distance wireless communication net (7), bus communication module (11) is replaced and is adopted short-distance wireless module, wherein said short-distance wireless communication net (7) to adopt 433M short-distance wireless communication net.
10. method according to claim 9, it is characterized in that: wherein said icing Monitoring Data comprises ice covering thickness, and described ice covering thickness draws as follows:
(1) rated wind pressure value P1=P3 * tan α, wherein the gravity vertically downward that bears of insulator chain is P3, and the angle of wind deflection that records is α, and the angle of dangling is β;
(2) the uneven pulling force P2=P3 of the lead of calculating insulator chain both sides * tan β;
(3) calculating the gravity vertically downward that insulator chain bears according to following formula is P3, and wherein the pulling force that bears of insulator chain is P:
P×P＝P1×P1＋P2×P2＋P3×P3；
P×P＝P3×P3×tanα×tanα＋P3×P3×tanβ×tanβ＋P3×P3；
P×P＝（tanα×tanα＋tanβ×tanβ＋1）×P3×P3；
(4) calculate icing weight P5=P3 – P4, wherein: original gravity vertically downward is P4 under the calm and stormless situation;
(5) by formula P5=C * L * B * N * π * (equivalent thickness that (M+D/2) * (M+D/2)-(D/2 * D/2)) draws icing is M, and wherein: the iron tower vertical span is L, and the conductor length coefficient is B, the lead division number is N, diameter of wire is D, and lead proportion is A, and icing proportion is C.
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| CN101915596A (en) * | 2010-07-26 | 2010-12-15 | 吕强 | Method and system for monitoring ice coating state of overhead cable |
| CN102033982B (en) * | 2010-10-29 | 2012-08-22 | 华南理工大学 | Fuzzy-logic-based ice-covered power transmission line state estimation method |
| CN102168962A (en) * | 2010-12-13 | 2011-08-31 | 云南电力试验研究院(集团)有限公司 | Optimized method for estimating ice coating thickness of electric transmission line |
| CN102054328A (en) * | 2010-12-13 | 2011-05-11 | 云南电力试验研究院(集团)有限公司 | Dynamic warning method for ice-covered power transmission lines |
| CN103453867B (en) * | 2013-09-09 | 2015-01-07 | 国家电网公司 | Electric transmission line ice coating thickness monitoring method |
| CN104180852A (en) * | 2014-08-28 | 2014-12-03 | 上海电力学院 | Transmission line icing online monitoring system |
| CN107394891A (en) * | 2017-07-05 | 2017-11-24 | 芜湖纯元光电设备技术有限公司 | A kind of electronics bidirectional safe control system applied to LED safety electric networks |
| CN110646031A (en) * | 2019-08-12 | 2020-01-03 | 国网浙江海盐县供电有限公司 | Online monitoring and safe operation management system and method for strain clamp |
| CN110657834A (en) * | 2019-08-26 | 2020-01-07 | 中国电力科学研究院有限公司 | Method and device for judging icing state of power grid transmission line in micro-terrain area |
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