CN101929972A - Insulator contamination on-line monitoring system - Google Patents
Insulator contamination on-line monitoring system Download PDFInfo
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- CN101929972A CN101929972A CN 201010227726 CN201010227726A CN101929972A CN 101929972 A CN101929972 A CN 101929972A CN 201010227726 CN201010227726 CN 201010227726 CN 201010227726 A CN201010227726 A CN 201010227726A CN 101929972 A CN101929972 A CN 101929972A
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Abstract
The invention provides an insulator contamination on-line monitoring system, which comprises a monitoring terminal and a remote monitoring terminal, wherein the monitoring terminal records transmission line information; after meteorological information and insulator leakage current are collected and self-adaption amplification is carried out on the leakage current, the pulse frequency of the leakage current is obtained, the leakage current, the pulse frequency of the leakage current and the meteorological information are stored, and the information is submitted in a short message mode or according to an submitted instruction; when the value of the leakage current is greater than a preset alarm value of the leakage current, alarm information is sent; and system parameters of the monitoring terminal and the preset alarm value of the leakage current are modified according to an modification instruction. The remote monitoring terminal stores and displays the transmission line information, the leakage current, the pulse frequency of the leakage current and the meteorological information and carries out fusion processing on fundamental wave of the leakage current, the pulse frequency of the leakage current and the meteorological information, and the contamination degree on the surface of the insulator is obtained and displayed. The insulator contamination on-line monitoring system has the characteristics of high accuracy, strong real-time performance, fast response and the like and is widely applicable to a power system.
Description
Technical field
The present invention relates to monitoring technology, particularly relate to a kind of insulator contamination on-line monitoring system.
Background technology
Pollution flashover is after the filthy material with electric conductivity that accumulates in the electric transmission line isolator surface makes moist, because its conductive capability is strengthened, make the dielectric level of insulator reduce greatly, even between insulator, constitute short circuit, cause transmission line of electricity generation flashover fault.The filth of insulator surface generally is divided into two big classes: the one, and floating ice, micronic dust, mist and birds droppings etc. are filthy naturally; The 2nd, industry such as flue dust that fuel-burning power plant, chemical plant, glass factory, cement mill, Metallurgical Factory and steam locomotive are discharged and waste gas are filthy.
In the practical application, the generation of transmission line of electricity flashover fault is serious day by day, and particularly in high pressure, extra high voltage network, flashover fault can cause accidents such as fire, insulator damage and power failure.In addition, shelf depreciation also can take place in the insulator surface in some filthy district when bad weather, and radio broadcast and radio communication is produced interference effect.In order to prevent power transmission and transforming equipment generation flashover fault, need the monitoring insulator leakage current, so that in time understand the running status of insulator.At present, operation power department, scientific research institutions and each big colleges and universities are all trying to explore the monitoring technology of insulator leakage current; But up to the present, the ratio of precision of insulator leakage current monitoring technology is lower, and the insulator leakage current premeasure is not high, and control response is slow.
This shows, in the prior art, exist about the monitoring technology of insulator leakage current that measuring accuracy is lower, premeasure is not high, response waits question of substance more slowly.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of precision height, real-time and respond fast insulator contamination on-line monitoring system.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of insulator contamination on-line monitoring system comprises monitoring terminal and remote monitoring terminal, and monitoring terminal connects by optical fiber or GPRS with remote monitoring terminal; Wherein,
Monitoring terminal, be used to gather the leakage current of weather information and insulator, after carrying out the self-adaptation processing and amplifying according to the leakage current values size, obtain the fundamental current and the pulse frequency of leakage current, after the fundamental current of leakage current, leakage current and the pulse frequency, weather information stored, be sent to remote monitoring terminal with short message mode or according to the instruction that reports that remote monitoring terminal sends; After leakage current values is greater than default leakage current alarming value, warning message is sent to remote monitoring terminal; According to the modify instruction that remote monitoring terminal sends, revise the systematic parameter and the default leakage current alarming value of described monitoring terminal; Also be used for the transmission line information of self record is sent to remote monitoring terminal.
Remote monitoring terminal, be used to store and show the fundamental current of transmission line information that monitoring terminal sends, leakage current, leakage current and the pulse frequency, weather information, fundamental current and the pulse frequency, weather information to leakage current are carried out fusion treatment, obtain and show the filthy degree of insulator surface; Also be used for reporting instruction and modify instruction to the monitoring terminal transmission.
In sum, insulator contamination on-line monitoring system of the present invention compares broad to the measurement range of leakage current, because leakage current is very little, so must adopt certain processing and amplifying, but the present invention is not to adopt unified amplification standard to leakage current, but carry out the self-adaptation processing and amplifying, thereby improved monitoring accuracy of the present invention according to the leakage current values size; In addition, the present invention adopts on-line monitoring system, make leakage current in time to report, and carry out fusion treatment according to fundamental current and the pulse frequency, weather information to leakage current, determine the filthy degree of insulator surface, guaranteed that the technician in time clears up the filth of insulator surface according to the order of severity of this filth degree, so real-time of the present invention is relatively good, response is also than comparatively fast.
Description of drawings
Fig. 1 is the composition structural representation of insulator contamination on-line monitoring system of the present invention.
Fig. 2 is the composition structural representation of monitoring terminal of the present invention.
Fig. 3 is the composition structural representation of remote monitoring terminal of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 1 is the composition structural representation of insulator contamination on-line monitoring system of the present invention.As shown in Figure 1, insulator contamination on-line monitoring system of the present invention comprises monitoring terminal 1 and remote monitoring terminal 2, and monitoring terminal 1 connects by optical fiber or GPRS with remote monitoring terminal 2; Wherein,
Monitoring terminal 1, be used to gather the Leakage Current of weather information and insulator, after carrying out the self-adaptation processing and amplifying according to the leakage current values size, obtain the fundamental current and the pulse frequency of leakage current, after the fundamental current of leakage current, leakage current and the pulse frequency, weather information stored, be sent to remote monitoring terminal 2 with short message mode or according to the instruction that reports that remote monitoring terminal 2 sends; After leakage current values is greater than default leakage current alarming value, warning message is sent to remote monitoring terminal 2; According to the modify instruction that remote monitoring terminal 2 sends, revise the systematic parameter and the default leakage current alarming value of monitoring terminal 1; Also be used for the transmission line information of self record is sent to remote monitoring terminal 2.
In the practical application, the leakage current that monitoring terminal 1 is gathered is smaller, all is the uA level generally, therefore need carry out processing and amplifying to the leakage current of gathering.The present invention carries out the self-adaptation processing and amplifying to leakage current, is specially: when leakage current values is 1uA～1mA, leakage current values is amplified 100 times; When leakage current values is 1mA～100mA, leakage current values is amplified 1～2 times.
Among the present invention, the fundamental current and the pulse frequency of obtaining leakage current are specially: the leakage current through the self-adaptation processing and amplifying is carried out wavelet transformation, obtain fundamental current and harmonic current, and current amplitude is the pulse frequency of 3mA～10mA and the pulse frequency that current amplitude surpasses 10mA in the statistics harmonic current.
In the practical application, weather information comprises environment temperature and ambient humidity.Here, the ambient temperature measurement scope is-45 ℃～125 ℃, and measuring accuracy is ± 0.5 ℃; The ambient humidity measurement range is 0～100%, and measuring accuracy is ± 10%.
Remote monitoring terminal 2, be used to store and show the fundamental current of transmission line information that monitoring terminal 1 sends, leakage current, leakage current and the pulse frequency, weather information, fundamental current and the pulse frequency, weather information to leakage current are carried out fusion treatment, obtain and show the filthy degree of insulator surface; Also be used for reporting instruction and modify instruction to monitoring terminal 1 transmission.
Among the present invention, fusion treatment is: current amplitude is the pulse frequency of 3mA～10mA and the pulse frequency, ambient humidity, the environment temperature that current amplitude surpasses 10mA in the fundamental current of leakage current, the harmonic current of leakage current, sue for peace after multiply by certain weighting coefficient respectively, obtain the filthy degree of insulator surface.
Among the present invention, described insulator is porcelain insulator, vitreous insulator and the composite insulator that moves in the transmission line of electricity of 35KV～1000KV and the power station.
In sum, insulator contamination on-line monitoring system of the present invention is 1uA～100mA to the scope of the leakage current of collection, because the scope of leakage current so carry out the self-adaptation processing and amplifying, is used to improve measuring accuracy than broad; Leakage current after handling is carried out wavelet transformation, current amplitude is the pulse frequency of 3mA～10mA and the pulse frequency that current amplitude surpasses 10mA in the fundamental current of acquisition leakage current, the harmonic current, to current amplitude in the harmonic current of the fundamental current of leakage current, leakage current is that the pulse frequency of 3mA～10mA and the pulse frequency that current amplitude surpasses 10mA, ambient humidity, environment temperature etc. are carried out fusion treatment, obtains the filthy degree of insulator surface.The field personnel is according to the filthy degree of insulator surface, and cleaning in time is filthy, prevents the generation of flashover fault, has ensured real-time of the present invention and response.
Fig. 2 is the composition structural representation of monitoring terminal of the present invention.As shown in Figure 2, monitoring terminal 1 comprises dam ring 11, self-adaptation modulate circuit 12, host computer communication 13, power-supply unit 14, storer 15 and sensor 16; Wherein,
Dam and encircle 11, be used to gather the leakage current of insulator, and leakage current is sent to self-adaptation modulate circuit 12.
In the practical application, the steel that the ring that dams is installed in last a slice insulator of the close iron tower of insulator chain emits the top.Generally speaking, 1～12 insulator string is arranged on the iron tower, actual standard is configured to 6 strings.
In the practical application, the user can set up the acquisition time interval that the ring that dams is gathered leakage current on their own, and the acquisition time of the present invention's acquiescence is 15 minutes.
Self-adaptation modulate circuit 12 is used for the leakage current values size according to ring 11 transmissions of damming, and this leakage current is carried out the self-adaptation processing and amplifying, and the leakage current after will amplifying is sent to host computer communication 14.
Sensor 13 is used to gather weather information, and is sent to host computer communication 14 after changing weather information into electric signal.
Here, sensor 13 is for gathering the sensor of various weather informations, and such as temperature sensor and humidity sensor, temperature sensor can become temperature signal electric signal, humidity sensor can be converted to electric signal with moisture signal, to adapt to follow-up fusion treatment process.
Host computer communication 14, be used for the leakage current of self-adaptation modulate circuit 12 transmissions, the weather information that sensor sends are forwarded to storer 15, obtain the fundamental current and the pulse frequency of leakage current according to leakage current, and report instruction with short message mode or according to what remote monitoring terminal 2 sent, be sent to remote monitoring terminal 2 with the fundamental current of leakage current, leakage current and the pulse frequency, weather information and from the transmission line information that storer 15 reads; According to the modify instruction that remote monitoring terminal 2 sends, revise the systematic parameter of monitoring terminal 1; Read default leakage current alarming value from storer 15,, warning message is sent to remote monitoring terminal 2 when leakage current during greater than default leakage current alarming value.
In the practical application, default leakage current alarming value needs to determine according to local conditions.
In the practical application, short message content comprises fundamental current and the pulse frequency, weather information, transmission line information and the warning message etc. of leakage current, leakage current.
Storer 15 is used for the leakage current of memory communicating main frame 14 transmissions, fundamental current and the pulse frequency, weather information and the warning message of leakage current; Also be used to write down transmission line information.
In the practical application, the fundamental current of leakage current, leakage current and the pulse frequency, weather information, warning message, transmission line information are stored in the mode of storer 15 Sino-Israel relations databases.Storer 15 can be stored six months data.
In the practical application, transmission line information comprises transmission line of electricity sign, shaft tower sign, insulator sign.The transmission line of electricity sign comprises transmission line of electricity numbering and title, and the shaft tower sign comprises shaft tower numbering and title, and the insulator sign comprises insulator numbering and title.
Power-supply unit 16 is used to host computer communication 14 power supplies.
Among the present invention, power-supply unit 16 comprises solar panels and accumulator; Wherein, to host computer communication 14 power supplies, power to host computer communication 14 as emergency electric supply unit by accumulator as main power-supply unit for solar panels.
In the practical application, the operating voltage of host computer communication 14 is a DC voltage, and magnitude of voltage is 6V.
Fig. 3 is the composition structural representation of remote monitoring terminal of the present invention.As shown in Figure 3, remote monitoring terminal 2 comprises monitoring host computer 21, storer 22, decision machine 23, display device 24, alarm 25; Wherein,
Monitoring host computer 21, fundamental current and the pulse frequency, weather information and the warning message of the transmission line information that is used for monitoring terminal 1 is sent, leakage current, leakage current are forwarded to storer 22, decision machine 23 and display device 24; Warning message according to monitoring terminal 1 sends sends alarm command to alarm 25; Also be used for reporting instruction and modify instruction to monitoring terminal 1 transmission.
Storer 22 is used to store fundamental current and the pulse frequency, weather information and the warning message of transmission line information that monitoring host computer 21 sends, leakage current, leakage current.
In the practical application, the fundamental current of transmission line information, leakage current, leakage current and the pulse frequency, weather information and warning message are stored in the storer 22 in the mode of relational database.
Decision machine 23, the fundamental current and the pulse frequency, the weather information that are used for leakage current that monitoring host computer 21 is sent are carried out fusion treatment, obtain the filthy degree of insulator surface, and filthy degree is sent to display device 24.
Display device 24 is used for the fundamental current of transmission line information that display monitoring main frame 21 sends, leakage current, leakage current and the pulse frequency, weather information, warning message, and the filthy degree that sends of decision machine 23.
Alarm 25 is used for the alarm command according to monitoring host computer 21 transmissions, reports to the police.
In the practical application, remote monitoring terminal 2 also can carry out operations such as remote software upgrade to monitoring terminal 1.
In the practical application, carry out data transmission by optical fiber or GPRS mode between monitoring terminal 1 and the remote monitoring terminal 2.
Among the present invention, the systematic parameter of monitoring terminal 1 comprises report cycle that data report, insulator chain number etc.
In a word, by the remote monitoring terminal in the insulator contamination on-line monitoring system of the present invention, inquire about the historical statistics of related datas such as interior transmission line information of certain period, leakage current, the leakage current pulse frequency, environment temperature, ambient humidity, warning message, and the filthy degree that passes through the tendency tracing analysis insulator of these data of inquiry, thereby improve the operational reliability of electric system, significantly reduced the operation power consumption of electric system simultaneously; Also can form etc. mode show and print related data.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an insulator contamination on-line monitoring system is characterized in that, described system comprises monitoring terminal and remote monitoring terminal, and monitoring terminal connects by optical fiber or GPRS with remote monitoring terminal; Wherein,
Monitoring terminal, be used to gather the leakage current of weather information and insulator, after carrying out the self-adaptation processing and amplifying according to the leakage current values size, obtain the fundamental current and the pulse frequency of leakage current, after the fundamental current of leakage current, leakage current and the pulse frequency, weather information stored, be sent to remote monitoring terminal with short message mode or according to the instruction that reports that remote monitoring terminal sends; After leakage current values is greater than default leakage current alarming value, warning message is sent to remote monitoring terminal; According to the modify instruction that remote monitoring terminal sends, revise the systematic parameter and the default leakage current alarming value of described monitoring terminal; Also be used for the transmission line information of self record is sent to remote monitoring terminal;
Remote monitoring terminal, be used to store and show the fundamental current of transmission line information that monitoring terminal sends, leakage current, leakage current and the pulse frequency, weather information, fundamental current and the pulse frequency, weather information to leakage current are carried out fusion treatment, obtain and show the filthy degree of insulator surface; Also be used for reporting instruction and modify instruction to the monitoring terminal transmission.
2. monitoring system according to claim 1 is characterized in that, described monitoring terminal comprises the ring that dams, self-adaptation modulate circuit, host computer communication, power-supply unit, storer and sensor; Wherein,
The ring that dams is used to gather the leakage current of insulator, and leakage current is sent to the self-adaptation modulate circuit;
The self-adaptation modulate circuit is used for the leakage current values size that environment-development send according to damming, and this leakage current is carried out the self-adaptation processing and amplifying, and the leakage current after will amplifying is sent to host computer communication;
Sensor is used to gather weather information, and is sent to host computer communication after changing weather information into electric signal;
Host computer communication, be used for the leakage current of self-adaptation modulate circuit transmission, the weather information that sensor sends are forwarded to storer, obtain the fundamental current and the pulse frequency of leakage current according to leakage current, and report instruction with short message mode or according to what described remote monitoring terminal sent, be sent to described remote monitoring terminal with the fundamental current of leakage current, leakage current and the pulse frequency, weather information and from the transmission line information that storer reads; According to the modify instruction that described remote monitoring terminal sends, revise the systematic parameter of described monitoring terminal; Read default leakage current alarming value from storer,, warning message is sent to described remote monitoring terminal when leakage current during greater than default leakage current alarming value;
Storer is used for the leakage current of memory communicating main frame transmission, fundamental current and the pulse frequency, weather information and the warning message of leakage current; Also be used to write down transmission line information;
Power-supply unit is used to the host computer communication power supply.
3. supervisory system according to claim 2 is characterized in that described power-supply unit comprises solar panels and accumulator; Wherein,
Solar panels are used for as main power-supply unit described host computer communication being powered;
Accumulator is used for as emergency electric supply unit described host computer communication being powered.
4. supervisory system according to claim 1 is characterized in that described remote monitoring terminal comprises monitoring host computer, storer, decision machine, display device, alarm; Wherein,
Monitoring host computer, fundamental current and the pulse frequency, weather information and the warning message of the transmission line information that is used for described monitoring terminal is sent, leakage current, leakage current are forwarded to storer, decision machine and display device; Warning message according to described monitoring terminal sends sends alarm command to alarm; Also be used for reporting instruction and modify instruction to described monitoring terminal transmission;
Storer is used to store fundamental current and the pulse frequency, weather information and the warning message of transmission line information that monitoring host computer sends, leakage current, leakage current;
Decision machine, the fundamental current and the pulse frequency, the weather information that are used for leakage current that monitoring host computer is sent are carried out fusion treatment, obtain the filthy degree of insulator surface, and filthy degree is sent to display device;
Display device is used for the fundamental current of transmission line information that the display monitoring main frame sends, leakage current, leakage current and the pulse frequency, weather information, warning message, and the filthy degree that sends of decision machine;
Alarm is used for the alarm command according to the monitoring host computer transmission, reports to the police.
5. according to claim 1,2 or 4 described monitoring systems, it is characterized in that described weather information comprises environment temperature and ambient humidity.
6. monitoring system according to claim 1 and 2 is characterized in that, described self-adaptation processing and amplifying is specially: when leakage current values is 1uA～1mA, leakage current values is amplified 100 times; When leakage current values is 1mA～100mA, leakage current values is amplified 1～2 times.
7. monitoring system according to claim 5, it is characterized in that, the described fundamental current and the pulse frequency of obtaining leakage current is specially: the leakage current through the self-adaptation processing and amplifying is carried out wavelet transformation, obtain fundamental current and harmonic current, and current amplitude is the pulse frequency of 3mA～10mA and the pulse frequency that current amplitude surpasses 10mA in the statistics harmonic current.
8. supervisory system according to claim 7, it is characterized in that, described fusion treatment is: current amplitude is the pulse frequency of 3mA～10mA and the pulse frequency, ambient humidity, the environment temperature that current amplitude surpasses 10mA in the fundamental current of leakage current, the harmonic current of leakage current, sue for peace after multiply by certain weighting coefficient respectively, obtain the filthy degree of insulator surface.
9. according to claim 1,2 or 4 described monitoring systems, it is characterized in that described transmission line information comprises transmission line of electricity sign, shaft tower sign, insulator sign.
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| CN102221641A (en) * | 2011-04-07 | 2011-10-19 | 北京交通大学 | On-line monitoring system for leakage current of high-voltage power transmission line insulator |
| CN103675434A (en) * | 2013-12-12 | 2014-03-26 | 国家电网公司 | System and method for early warning insulator pollution flashover |
| CN105203899A (en) * | 2015-08-26 | 2015-12-30 | 芜湖市凯鑫避雷器有限责任公司 | On-line monitoring system of leakage current of insulator |
| CN105510525A (en) * | 2015-07-23 | 2016-04-20 | 深圳供电局有限公司 | Electric-transmission-line dirt monitoring apparatus and method |
| CN105911427A (en) * | 2016-04-26 | 2016-08-31 | 武汉新电电气技术有限责任公司 | Power transmission line fault locating method based on optical fiber composite overhead ground wire temperature distribution |
| CN106405283A (en) * | 2016-08-27 | 2017-02-15 | 许继集团有限公司 | Lightning arrester fault early warning method capable of overcoming environment humiture influence |
| CN107505531A (en) * | 2017-08-10 | 2017-12-22 | 中国科学院上海高等研究院 | A kind of earth detector, insulator earth detector, system and method |
| CN110031727A (en) * | 2019-05-23 | 2019-07-19 | 唐智科技湖南发展有限公司 | A kind of fault monitoring system and insulator breakdown intelligence operation platform of insulator |
| CN110703161A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse on-line monitoring system |
| CN110703162A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse fault detection device |
| CN110906975A (en) * | 2019-11-01 | 2020-03-24 | 国网江苏省电力有限公司盐城供电分公司 | Insulator contamination detection system based on solar power supply and detection method thereof |
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| CN102221641A (en) * | 2011-04-07 | 2011-10-19 | 北京交通大学 | On-line monitoring system for leakage current of high-voltage power transmission line insulator |
| CN103675434A (en) * | 2013-12-12 | 2014-03-26 | 国家电网公司 | System and method for early warning insulator pollution flashover |
| CN105510525A (en) * | 2015-07-23 | 2016-04-20 | 深圳供电局有限公司 | Electric-transmission-line dirt monitoring apparatus and method |
| CN105203899A (en) * | 2015-08-26 | 2015-12-30 | 芜湖市凯鑫避雷器有限责任公司 | On-line monitoring system of leakage current of insulator |
| CN105911427A (en) * | 2016-04-26 | 2016-08-31 | 武汉新电电气技术有限责任公司 | Power transmission line fault locating method based on optical fiber composite overhead ground wire temperature distribution |
| CN106405283B (en) * | 2016-08-27 | 2019-08-16 | 许继集团有限公司 | A kind of surge arrester failure method for early warning for overcoming ambient temperature and humidity to influence |
| CN106405283A (en) * | 2016-08-27 | 2017-02-15 | 许继集团有限公司 | Lightning arrester fault early warning method capable of overcoming environment humiture influence |
| CN107505531A (en) * | 2017-08-10 | 2017-12-22 | 中国科学院上海高等研究院 | A kind of earth detector, insulator earth detector, system and method |
| CN110031727A (en) * | 2019-05-23 | 2019-07-19 | 唐智科技湖南发展有限公司 | A kind of fault monitoring system and insulator breakdown intelligence operation platform of insulator |
| CN110031727B (en) * | 2019-05-23 | 2021-08-10 | 唐智科技湖南发展有限公司 | Fault monitoring system of insulator and intelligent operation and maintenance platform for insulator fault |
| CN110703161A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse on-line monitoring system |
| CN110703162A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse fault detection device |
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Application publication date: 20101229 |