CN202471872U - Dirt online monitoring system of power transmission line insulator - Google Patents
Dirt online monitoring system of power transmission line insulator Download PDFInfo
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- CN202471872U CN202471872U CN201120479998XU CN201120479998U CN202471872U CN 202471872 U CN202471872 U CN 202471872U CN 201120479998X U CN201120479998X U CN 201120479998XU CN 201120479998 U CN201120479998 U CN 201120479998U CN 202471872 U CN202471872 U CN 202471872U
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- leakage current
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Abstract
The utility model discloses a dirt online monitoring system of a power transmission line insulator. The dirt online monitoring system of the power transmission line insulator includes a province company monitoring center host, city office branch center hosts and an online monitoring auxiliary unit. The city office branch center hosts are arranged between the province company monitoring center host and the online monitoring auxiliary unit. The dirt online monitoring system of the power transmission line insulator realizes functions in two aspects of remote distribution online monitoring and integrated data management of power transmission line dirt and the dirt judging and warning, thereby facilitating the realization of uniform planning and management of power transmission lines in a district. By analyzing onsite operation data, the fact that the leakage current of the insulator in operation changes greatly and has good relevance with factors of environmental humidity and the like is obtained. The changes and development trends of the leakage current reflect the dirt condition of the insulator in operation. An onsite operation result shows that the dirt online monitoring system of the power transmission line insulator can realize insulator dirt judgment according to collected information such as leakage current and the like, thereby preventing and reducing line pollution flashover accidents.
Description
Technical field:
The utility model belongs to transmission line of electricity on-line monitoring technique field, relates to the on-line monitoring of electric transmission line isolator, is specifically related to a kind of line insulator Leakage Current monitoring system based on GSM SMS network.
Background technology:
But the insulator of transmission line of electricity requires all can open shop under atmospheric over-voltage, internal overvoltage and long-time running voltage.But effect when being deposited on the bad weather conditions such as solid, liquids and gases particulate and mist, dew, drizzle, ice-melt, snow melt of insulator surface; The electrical strength that makes insulator is reduced greatly; Thereby make the insulator of transmission line of electricity and transformer station not only flashover possibly take place under the superpotential effect; More frequent is that pollution flashover takes place under long-time running voltage, causes power outage.In order to improve the insulator reliability of operation, adopt regular hand sweeping usually.Hand sweeping is full plan mode basically; Need the power failure operation, not only consume great amount of manpower and material resources, and owing to lack the real-time information of insulator contamination degree; The cleaning of plan formula can not be accomplished the generation of the accident of stopping, and many pollution flashover accidents all take place between twice cleaning.Strengthen the modern management of transmission line of electricity, carry out line antifouling and dodge on-line monitoring, realize that the requirement of repair based on condition of component has become problem anxious to be solved.
At present the anti-pollution measure in electric system mainly contains: the number through increasing insulator chain is to increase creepage distance; Adopt the insulator of new material formations such as organic synthesis; Be coated with the RTV organic coating; Take the manual regular cleaning.Said method has played certain function in the generation that prevents pollution flashover accident; But see with angle economy from technical; All there are a large amount of human and material resources; The waste of financial resources, and lack real-time monitoring to the insulator contamination degree, can not play good effect to the generation that prevents pollution flashover accident.
When the pollution level of insulator surface increased, the dielectric strength of insulator descended thereupon, and the leakage current on the insulator also increases thereupon.We can judge the pollution level of insulator through the size of monitoring insulator leakage current.Utilize this kind method can monitor the pollution level of insulator in real time, make " cleaning regularly " of insulator contamination change " state cleaning " into, realize the saving of human and material resources, financial resources.
The utility model content:
The purpose of the utility model provides the filthy on-Line Monitor Device of a kind of electric transmission line isolator; Filthy situation on the insulator is made real-time monitoring, has solved the not very good problem of effect that existing anti-fouling method need spend great amount of manpower and material resources, financial resources and prevent pollution flashover accident.A kind of line insulator Leakage Current monitoring system (Fig. 1) based on GSM SMS network is provided.By GSM SMS network; Successfully developed novel electric transmission line isolator Leakage Current on-line monitoring system; Leakage Current, flashover pulse, ambient temperature and humidity, wind speed, wind direction and rainfall etc. to transmission line of electricity operation insulator chain carried out regularly (20 minutes, 40 minutes etc.; The user can set) monitoring, dirty wet situation of line insulation sub-surface and pre-alarm service can be provided at any time, realize on-line monitoring to each bar line insulator leakage current.
The utility model provides a kind of electric transmission line isolator contamination on-line monitoring system, comprises province's corporation monitoring central host, districts and cities office monitoring branch center main frame and on-line monitoring extension set; A plurality of districts and cities office monitoring branch center main frame is set between said province corporation monitoring central host and the on-line monitoring extension set;
Said on-line monitoring extension set comprises the C51 single chip processing module, two-way LCD MODULE, system power supply, signal message processing unit, A/D modular converter, data storage cell, communication module and the clock chip of being connected with on the C51 single chip processing module; Said system power supply is connected with controller is two-way, two-way sun power and the accumulator of being connected with on the controller.
Said C51 single chip processing module adopts the MSP430 single-chip microcomputer.
Be connected with Leakage Current sensor, Temperature Humidity Sensor, air velocity transducer, wind transducer and rain sensor respectively on the said signal message processing unit; Be connected with insulator respectively on the said Leakage Current sensor.
Said system power supply is made up of solar panel, charging circuit, high-performance accumulator.
The characteristic of the utility model also is:
Provided the concrete method for designing of monitoring unit and expert software.
Developed the contamination on-line monitoring system based on HSDA, every basic shaft tower is installed an extension set, regularly measures the filthy information such as leakage current of (sampling time can revise within the specific limits) line insulator; Districts and cities office center host utilizes GSM SMS network that each monitoring point extension set is carried out historical data, real time data and operational factor setting, judges that the filth of the insulator of whole piece circuit distributes and long-pending dirty situation; The networking of LAN mode is adopted at the Surveillance center of prefectures and cities office and province corporation monitoring center; Data such as the leakage current, humiture, wind speed, rainfall of Surveillance center of prefectures and cities office can be directly called at province corporation monitoring center, understand the long-pending dirty situation of electric transmission line isolator of this province.Total system mainly is made up of province's corporation monitoring central host, districts and cities office monitoring branch center main frame, on-line monitoring extension set, expert software and large-scale oracle database etc.Expert software adopts measures the running status that all-wave shape leakage current is judged contaminated insulator; Repeatedly draw and estimate filth over time; Be the long-pending dirty process of insulator surface, reach the time of dangerous values, thereby and solve the problem whether insulator will clean to determine its filth.This system has realized the filthy long-distance distribution formula on-line monitoring of transmission line of electricity and centralized data management and filthy judgement warning two aspect functions simultaneously; Specifically Information Monitoring is transferred to Surveillance center with GSM SMS; Carry out filth by expert software and judge, cross in limited time, send the pre-alarm signal in filth.In addition; The expert software of system can be according to the operation result of each monitoring unit; Automatically upgrade dirty district grade and draw out the dirt of prefectures and cities even whole province and distinguish Butut, effectively prevent and reduce the circuit pollution flashover accident, help to realize this area's transmission line of electricity unified planning and management.
Description of drawings:
Fig. 1 is the system architecture synoptic diagram of the filthy monitoring terminal of the utility model electric transmission line isolator;
Fig. 2 is the leakage current collection ring scheme of installation of the filthy monitoring terminal of the utility model electric transmission line isolator;
Fig. 3 is the leakage current sampling processing block diagram of the filthy monitoring terminal of the utility model electric transmission line isolator;
Fig. 4 is the monitoring unit theory diagram of the filthy monitoring terminal of the utility model electric transmission line isolator;
Fig. 5 is the AT instruction repertorie process flow diagram of the filthy monitoring terminal of the utility model electric transmission line isolator;
Fig. 6 is the filthy monitoring terminal of a utility model electric transmission line isolator expert software functional module.
Wherein: 1 is the steel cap; 2 is Leakage Current collection ring; 3 is insulator.
Embodiment:
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1-6, a kind of electric transmission line isolator contamination on-line monitoring system comprises province's corporation monitoring central host, districts and cities office monitoring branch center main frame and on-line monitoring extension set; A plurality of districts and cities office monitoring branch center main frame is set between said province corporation monitoring central host and the on-line monitoring extension set;
Said on-line monitoring extension set comprises the C51 single chip processing module, two-way LCD MODULE, system power supply, signal message processing unit, A/D modular converter, data storage cell, communication module and the clock chip of being connected with on the C51 single chip processing module; Said system power supply is connected with controller is two-way, two-way sun power and the accumulator of being connected with on the controller.
(1) hardware is realized
(1) function of extension set completion
The on-line monitoring extension set is obtained Leakage Current signal (see figure 2) through gathering from insulator; And regularly signals such as leakage current, ambient temperature and humidity, rainfall and wind speed are sent into signal processing unit; Once amplification and filtering signal get into 16 A/D converter spares after secondary amplifies and isolates; And effectively calculate current average and pulse number in 5 fens clock times, and environmental variance such as humiture, rainfall by single-chip microcomputer.The timely on the one hand data with rough handling of monitoring unit are transferred to Surveillance center of districts and cities office through GSM SMS and carry out data processing; On the other hand effective numerical value is stored in the high-capacity flash memory that is difficult for losing.It is operations such as request of data, real-time data acquisition, modification extension set sampling time and subordinate machine system time calibrating that monitoring unit can carry out history according to the control signal that center host is sent.
(2) monitoring unit hardware designs
The on-line monitoring extension set is accomplished collection, storage and the transmission of monitoring point insulator leakage current information; Its theory diagram is as shown in Figure 4; Each shaft tower monitoring unit should carry out necessary processing under the prerequisite that guarantees certain interference protection measure, like (see figure 4)s such as amplification and filtering.Adopt the OP07 amplifier to realize the once amplification of system design, adopt OP07 to design the low-pass filter of 1.5KHz, signal afterwards gets into the secondary amplifying unit.Can monitor 1-6 and go here and there independent insulator.Extension set is made up of solar panel, charging circuit, high-performance accumulator, data flash memory, Philip low-power scm, 16 A/D converters, leakage current sensor, Temperature Humidity Sensor, GSM digital transmission module, extension set software etc.
(3) leakage current signal treatment circuit
Big electric current in order to prevent to be struck by lightning is to the catastrophic failure of Surveillance center and the needs of Signal Spacing, at first passes through leakage current sensor from gathering the leakage current (see figure 2) that ring gathers.But it is still very faint to obtain current signal through current sensor from insulator, under the prerequisite that guarantees certain interference protection measure, should carry out necessary processing, like (see figure 3)s such as amplification filtering.Adopt the OP07 amplifier to realize the once amplification of system design, adopt OP07 to design the low-pass filter of 1.5kHz, signal afterwards gets into the secondary amplifying unit.
(2) software design of extension set
, for guaranteeing power supply serviceable life, require extension set when not working, to be in sleep state in the open air, turn-off circuit such as GSM SMS module, LCD MODULE and peripheral amplifications, timing is waken extension set and is carried out data acquisition, judgement and wireless transmission etc.In addition, should set that the hardware and software house dog is stopped system in case of system halt or program is let fly away.Initialization operations such as end mark are accepted in extension set software main program completion I/O mouth, flag register, interruption, inquiry.The INTO interrupt routine is accomplished timing sampling, carries out AD conversion (slewing rate is up to 20KHz), primary Calculation leakage current amplitude and pulse number, control GSM SMS module is sent functions such as accepting data.The GSM SMS communication AT instruction flow chart of monitoring unit is seen Fig. 5.
Expert software
(1) judgment basis of insulator contamination
Analyze with a large amount of insulator contamination test findings to filthy monitoring system of transformer station and the on-the-spot long-time Monitoring Data of the filthy cruising inspection system of radio electric transmission line isolator; Confirm to judge the leakage current amplitude of the required monitoring of filthy situation, the variablees such as umber of pulse, running environment humiture, sleet and wind speed in the unit interval; And set up the expert knowledge library of judging the insulator contamination situation based on the multiple factor of leakage current amplitude, pulse number and external environment: for the cleaning insulator; Leakage value is below 150uA; Almost do not have pulse train, leakage current values is little with variations such as ambient humidities; When reaching 50% left and right sides of the close value of regulation salt for filthy degree; Because the leakage current pulse train that the insulator shelf depreciation produces occurs with trunking mode; Leakage current values increases sharply with the increase of ambient humidity, the time interval of pulse train be tens seconds to a few minutes; Surpass the close insulator of regulation salt for filthy degree, its leakage current values and umber of pulse increase sharply with the increase of ambient humidity, and the leakage current the when leakage current during arcing occurs doing the district than local surfaces is big more than 10 times, and the interval of pulse train is merely several seconds.The current amplitude and the pulse frequency threshold values of reporting to the police about filth still do not have country or industry standard; And different gradation for surface pollution, dirty source character, its alarming threshold value of insulator type are widely different; Need to combine the actual conditions of this area and the practical operating experiences of Jin Yuan company filth on-line system tentatively to confirm a threshold values, as filthy regional in the industry of III level, the porcelain suspended insulator; The leakage current values in the area of working voltage 330KV tentatively is made as 30mA, and the pulse frequency is 25.Importantly, the open alarm platform of components of system as directed can be revised the alarming threshold value of the leakage current and the pulse frequency automatically according to the operation result of this system and the personal monitoring result of this area, finds suitable criterion.
(2) software function
The expert software of system is divided into following several functional module (see figure 6) by function: the GSM data transmission module; The new data processing module; The inquiry of historical data module; The monitoring unit administration module; The warning message enquiry module; The gradation for surface pollution administration module.The expert software of Surveillance center can monitor the variable situation such as leakage current on each shaft tower of this circuit in real time; And carry out analysis and judgement through the real time data of the point of extension set being surveyed, patrolling survey; The long-pending dirty situation of this monitoring point is judged methods such as operating experience, test findings and relative analytic approach combination of fuzzy diagnosis in utilization; And provide pre-alarm in limited time near crossing, and issue current keeper and relevant leader to warning message with short messaging mode filthy.Expert software manages filthy leakage current amplitude, the pulse frequency and environmental parameter concentratedly, provides separately with comprehensively to inquire about, analyze and print, and sets up the filthy information database of this circuit, and can combine operating experience to repaint the filthy distribution plan of this area.Can there be the filthy situation of authority ground real time inspection prefectures and cities circuit in province Surveillance center, helps to realize the unified command under unified planning, uniform dispatching and the accident conditions of this province's electrical network.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the method for above-mentioned announcement capable of using and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (4)
1. electric transmission line isolator contamination on-line monitoring system is characterized in that:
Comprise province's corporation monitoring central host, districts and cities office monitoring branch center main frame and on-line monitoring extension set; A plurality of districts and cities office monitoring branch center main frame is set between said province corporation monitoring central host and the on-line monitoring extension set;
Said on-line monitoring extension set comprises the C51 single chip processing module, two-way LCD MODULE, system power supply, signal message processing unit, A/D modular converter, data storage cell, communication module and the clock chip of being connected with on the C51 single chip processing module; Said system power supply is connected with controller is two-way, two-way sun power and the accumulator of being connected with on the controller.
2. electric transmission line isolator contamination on-line monitoring system according to claim 1, it is characterized in that: said C51 single chip processing module adopts the MSP430 single-chip microcomputer.
3. electric transmission line isolator contamination on-line monitoring system according to claim 1 is characterized in that: be connected with Leakage Current sensor, Temperature Humidity Sensor, air velocity transducer, wind transducer and rain sensor respectively on the said signal message processing unit; Be connected with insulator respectively on the said Leakage Current sensor.
4. electric transmission line isolator contamination on-line monitoring system according to claim 1, it is characterized in that: said system power supply is made up of solar panel, charging circuit, high-performance accumulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120479998XU CN202471872U (en) | 2011-11-28 | 2011-11-28 | Dirt online monitoring system of power transmission line insulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120479998XU CN202471872U (en) | 2011-11-28 | 2011-11-28 | Dirt online monitoring system of power transmission line insulator |
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| CN102928751A (en) * | 2012-10-31 | 2013-02-13 | 山东电力集团公司烟台供电公司 | Traveling wave principle-based high-tension overhead line insulator online monitoring method |
| CN103324127A (en) * | 2013-07-03 | 2013-09-25 | 河北工业大学 | Electric multiple unit flashover prevention device |
| CN103592580A (en) * | 2013-10-18 | 2014-02-19 | 国网山东省电力公司日照供电公司 | Insulator haze and pollution flashover online monitoring system and method |
| CN104076241A (en) * | 2014-07-16 | 2014-10-01 | 胡小青 | Insulator detecting device |
| CN104502410A (en) * | 2013-07-21 | 2015-04-08 | 国家电网公司 | Prediction method for insulator equivalent salt deposit density and non-soluble deposit density by least squares support vector machine and genetic algorithm |
| CN104614649A (en) * | 2015-02-02 | 2015-05-13 | 广东电网有限责任公司电力科学研究院 | High-voltage overhead transmission line dirt detection method |
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| CN105116273A (en) * | 2015-08-26 | 2015-12-02 | 芜湖市凯鑫避雷器有限责任公司 | Insulator on-line monitoring system |
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| CN105259464A (en) * | 2015-11-09 | 2016-01-20 | 江苏省电力公司检修分公司 | A power transmission line insulator distributed leakage current monitoring device |
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| CN102928751B (en) * | 2012-10-31 | 2014-10-29 | 山东电力集团公司烟台供电公司 | Traveling wave principle-based high-tension overhead line insulator online monitoring method |
| CN102928751A (en) * | 2012-10-31 | 2013-02-13 | 山东电力集团公司烟台供电公司 | Traveling wave principle-based high-tension overhead line insulator online monitoring method |
| CN103324127B (en) * | 2013-07-03 | 2016-04-20 | 河北工业大学 | Electric multiple unit flashover prevention device |
| CN103324127A (en) * | 2013-07-03 | 2013-09-25 | 河北工业大学 | Electric multiple unit flashover prevention device |
| CN104502410A (en) * | 2013-07-21 | 2015-04-08 | 国家电网公司 | Prediction method for insulator equivalent salt deposit density and non-soluble deposit density by least squares support vector machine and genetic algorithm |
| CN103592580A (en) * | 2013-10-18 | 2014-02-19 | 国网山东省电力公司日照供电公司 | Insulator haze and pollution flashover online monitoring system and method |
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| CN105116273A (en) * | 2015-08-26 | 2015-12-02 | 芜湖市凯鑫避雷器有限责任公司 | Insulator on-line monitoring system |
| CN105158658A (en) * | 2015-08-26 | 2015-12-16 | 芜湖市凯鑫避雷器有限责任公司 | High-voltage insulator online monitoring system |
| CN105259464B (en) * | 2015-11-09 | 2018-11-09 | 国网江苏省电力有限公司检修分公司 | Electric transmission line isolator distribution leakage current monitoring device |
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| CN105242187A (en) * | 2015-11-09 | 2016-01-13 | 江苏省电力公司检修分公司 | Self-triggering power transmission line insulator pollution flashover early-warning device |
| CN105571644A (en) * | 2016-01-19 | 2016-05-11 | 西安工程大学 | Metal dust pollution on-line monitoring device for insulator, and monitoring method thereof |
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| CN109696596A (en) * | 2019-01-28 | 2019-04-30 | 西安工程大学 | A kind of wet dirty remote supervision system of insulator |
| CN109799272A (en) * | 2019-01-28 | 2019-05-24 | 西安工程大学 | A kind of composite insulator icing growth monitoring system based on capacity effect |
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| CN114034345A (en) * | 2021-11-15 | 2022-02-11 | 江西省萍乡市南坑高压电瓷厂 | Insulator leakage analysis system and method |
| CN114034345B (en) * | 2021-11-15 | 2024-04-16 | 江西省萍乡市南坑高压电瓷厂 | Insulator leakage analysis system and method |
| CN114509107A (en) * | 2022-01-04 | 2022-05-17 | 西安理工大学 | Online monitoring device and online monitoring method for contact net insulator |
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