CN103809060B - Platform district low-voltage zero line current leakage detection system and detection of electrical leakage method - Google Patents

Platform district low-voltage zero line current leakage detection system and detection of electrical leakage method Download PDF

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Publication number
CN103809060B
CN103809060B CN201210436557.0A CN201210436557A CN103809060B CN 103809060 B CN103809060 B CN 103809060B CN 201210436557 A CN201210436557 A CN 201210436557A CN 103809060 B CN103809060 B CN 103809060B
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district
data collection
collection station
fixed terminal
data
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CN201210436557.0A
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CN103809060A (en
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金毅
毛健
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WUXI SAIKETE INFORMATION SCIENCE & TECHNOLOGY Co Ltd
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WUXI SAIKETE INFORMATION SCIENCE & TECHNOLOGY Co Ltd
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Abstract

The present invention relates to power monitoring equipment, particularly relate to the fault test set of power supply industry platform district zero line electric leakage。Wherein, data collection station, including collecting unit, communication module first and power supply first;Described power supply first is described collecting unit and described communication module is powered;Described collecting unit includes mutual-inductance element and acquisition module, and the data of collection are sent to described acquisition module by described mutual-inductance element, and the data that described mutual-inductance element is gathered by described acquisition module are sent to described communication module first after processing。And use its platform district low-voltage zero line current leakage detection system, including platform district fixed terminal and data collection station two part, described data collection station is located at platform district and is landed case and user connects between the point of family, described district's fixed terminal is connected with the transformator disconnecting zero line, and described data collection station is connected by ZigBee communication with described district's fixed terminal。The present invention has the trouble point quickly finding electric leakage, the advantage reducing the time of looking up the fault。

Description

Platform district low-voltage zero line current leakage detection system and detection of electrical leakage method
Technical field
The present invention relates to power monitoring equipment, particularly relate to the fault detect being applied to the zero line electric leakage of power supply industry platform district, be specially a kind of platform district low-voltage zero line current leakage detection system and detection method。
Background technology
Installing aftercurrent action protecting equipment in low-voltage distribution system is prevent directly contact one of shock hazard and mediate contact shock hazard generation effective measures; also being prevent electric wiring or electrical equipment grounding fault from causing electrical fire and the technical measures of electrical equipment damage accident, old family can effectively protect the person and property safety with final stage residual current operated protective device and distribution transformer one-level aftercurrent action protecting equipment bringing normally into operation。
At present because of the reason such as aging circuit, insulating properties reduction, electrical equipment electric leakage in household; rural subscribers are privately by out of service for domestic final stage residual current operated protective device for part, thus causing distribution transformer one-level aftercurrent action protecting equipment frequent movement, directly affects the normal electricity consumption of other users in platform district。
The earth leakage protective of prior art is how for live wire electric leakage design, and the detection of electrical leakage for zero line is substantially blank。Thus, if there is the eliminating that requires a great deal of time of zero line in platform district。
2010, adding up according to platform district of Xu Xiake power supply station of the Jiangyin City earth leakage protective device trouble shooting time, break down the whole year 194 (secondary) of tripping operation, because zero line electric leakage is broken down 86 (secondary) of tripping operation, accounts for the 44.33% of annual CCS casual clearing station time;The time that wherein inspection of zero line leakage current spends is relatively long, average 102 minutes。
Concrete fault is investigated and prosecuted and is added up chronological classification as follows:
At present, in wide rural power distribution platform district, power supply station's lookup leak current fault difficulty is big, the time is long, for the detection of low-voltage zero line electric leakage, but without effective, economic scheme。
Summary of the invention
One of goal of the invention of the present invention is to provide a kind of data collection station that all can freely gather data for differing heights。
One of goal of the invention of the present invention is to provide a kind of zero line that can position rapidly and the trouble point of electric leakage occurs, and implements to pass to the platform district low-voltage zero line current leakage detection system of on-the-spot electrician and inspection center by trouble point and the investigation data of raw electric leakage。
Another goal of the invention of the present invention is to provide the detection method of a kind of district's low-voltage zero line electric leakage。
An object of the present invention is achieved by the following technical solution:
A kind of data collection station, described data collection station includes collecting unit, communication module first and power supply first;Described power supply first is described collecting unit and described communication module is powered;Described collecting unit includes mutual-inductance element and acquisition module, and the data of collection are sent to described acquisition module by described mutual-inductance element, and the data that described mutual-inductance element is gathered by described acquisition module are sent to described communication module first after processing。
Described mutual-inductance element is connected with described acquisition module, described communication module and described power supply first by connecting rod。And described connecting rod is the telescopic connecting rod that can change length。
An object of the present invention is achieved by the following technical solution:
A kind of platform district low-voltage zero line current leakage detection system, including platform district fixed terminal and data collection station two part, described data collection station is located between platform district transformator and user access point, and described data collection station includes collecting unit, communication module first and power supply first;Described power supply first is described collecting unit and described communication module is powered;Described collecting unit includes mutual-inductance element and acquisition module, the data of collection are sent to described acquisition module by described mutual-inductance element, the data that described mutual-inductance element is gathered by described acquisition module are sent to described communication module first after processing, and the data after the process of described acquisition module are sent to described district's fixed terminal by described communication module first;The electric leakage data gathered are analyzed and transmit by described district's fixed terminal;
Described district's fixed terminal is connected with the transformator disconnecting zero line, and described district's fixed terminal includes communication module second, analysis module and power supply second, and described power supply second is described communication module second and described analysis module is powered;The data that described communication module first is transmitted by described analysis module process, and return to described data collection station;
Described data collection station is connected by ZigBee communication with described district's fixed terminal。
Further, described data collection station and described district's fixed terminal are equipped with WiFi or/and 3G communication interface。
Further, the communication interface of described data collection station and described district's fixed terminal is GPRS or/and GSM communication interface。
Further, described data collection station can be affixed to each key point in each district, it is possible to is portable。
Another goal of the invention of the present invention is achieved in that
A kind of platform district low-voltage zero line electrical leakage detecting method, step is as follows:
1) platform district transformator is disconnected zero line, then connect described district's fixed terminal;Described district's fixed terminal includes communication module second, analysis module and power supply second;Described power supply second powers to described communication module second and described analysis module;
2) between transformator and the user access point of platform district electrical network, it is provided with data collection station, described data collection station includes mutual-inductance element, acquisition module, communication module first and power supply first, and wherein said power supply first is that described mutual-inductance element, described acquisition module, described communication module first are powered;The data of collection are transmitted in described acquisition module by described mutual-inductance element, and described acquisition module is sent to described communication module first after described data being processed, and the data after process are sent to platform district fixed terminal by described communication module first;The data that described communication module first is transmitted by described analysis module process, and return to described data collection station;
Portable analysis terminal is connected by ZigBee communication with described district's fixed terminal;
3) set up described data collection station to be connected with the communication of both described district's fixed terminals;
4) middle of described district's fixed terminal and user access point it is positioned at, described data collection station is pinned zero line, if voltage is not decayed between described data collection station and described district's fixed terminal, then illustrate not leak electricity at described data collection station and described district's fixed terminal;If voltage attenuation is relatively big between described data collection station and described district's fixed terminal, then illustrate there is electric leakage at described data collection station and described district's fixed terminal。
Have the beneficial effect that, achieved by the present invention, the trouble point that can quickly find electric leakage, reduce the time of looking up the fault。
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further。
Fig. 1 is platform district of the present invention low-voltage zero line current leakage detection system schematic diagram。
Fig. 2 voltage attenuation schematic diagram。
Fig. 3 is platform district of the present invention low-voltage zero line current leakage detection system Cleaning Principle schematic diagram。
Wherein:
1 district's fixed terminal, 11 power supply second, 12 communication module second, 13 analysis modules;
2 data collection stations, 21 mutual-inductance elements, 22 power supply first, 23 communication module first, 24 acquisition modules, 25 connecting rods;
3 district's electrical networks, 31 electric poles。
Detailed description of the invention
In order to more properly describe the present invention and the beneficial effect brought thereof, below in conjunction with accompanying drawing, the present invention is described further, but protection scope of the present invention is not limited to the content that detailed description of the invention is stated。
Known in conjunction with Fig. 1, Fig. 2, Fig. 3:
Platform district low-voltage zero line current leakage detection system, including platform district fixed terminal 1 and data collection station 2 two part。
Data collection station 2 is located at platform district and is landed between case (i.e. transformator) and user access point, data collection station 2 includes mutual-inductance element 21, acquisition module 24, communication module first 23 and power supply first 22, and wherein power supply first 22 is mutual-inductance element 21, acquisition module 24, communication module first 23 power;Mutual-inductance element 21 locks in and gathers data on zero line and the data of collection are transmitted in acquisition module 24, acquisition module 24 is sent to communication module first 23 after the data of reception being processed, communication module first 23 acquisition module 24 is processed after data be sent to platform district fixed terminal 1;Wherein mutual-inductance element 21 is cassette transformer。Cassette transformer is connected with acquisition module 24, communication module first 23 and power supply first 22 by connecting rod 25, and connecting rod 25 is extension type, can regulate according to the height setting up electric wire in electrical network, so can avoiding the work high above the ground of electrician, the length that only need to regulate connecting rod 25 can make cassette transformer lock hanging live electric wire。
Platform district fixed terminal 1 is connected with the transformator disconnecting zero line, platform district fixed terminal 1 includes communication module second 12, analysis module 13 and power supply second 11, power supply second 11 is stated analysis module 13 for communication module second 12 and is powered, communication module second 12 transfers in analysis module 13 after receiving the data that communication module first 23 sends, after the data that communication module second 12 receives are processed by analysis module 13 and return to described data collection station 2;
Data collection station 2 is connected by ZigBee communication with platform district fixed terminal 1。
After finding electric leakage circuit, by the wireless short region communications protocol ZigBee of field level, and GPRS/GSM network, relevant data are transferred to platform district fixed terminal 1。Electrical leakage voltage data are analyzed by right background partition fixed terminal 1, adopt binary tree backtracking algorithm, quickly there is the trouble point of electric leakage in location, and investigation data are issued described data collection station 2 and on-the-spot electrician by GSM, and uploads data to data center by GPRS。
The situation method utilizing monitor station district of the present invention electrical network zero line electric leakage is as follows:
Platform district low-voltage zero line electrical leakage detecting method, step is as follows:
1) transformator is disconnected zero line, then connect the accessory power supply of DC24/AC220 then connected unit district fixed terminal 1;Platform district fixed terminal 1 includes communication module second 12, analysis module 13 and power supply second 11;Power supply second 11 powers to communication module second 12 and analysis module 13;
2) portable data collection station 2 it is provided with between case and user access point landing of platform district electrical network 3。Data collection station 2 includes mutual-inductance element 21, acquisition module 24, communication module first 23 and power supply first 22, and wherein power supply first 22 is mutual-inductance element 21, acquisition module 24, communication module first 23 power;The data of reception are transmitted in acquisition module 24 by mutual-inductance element 21, and the data that acquisition module 24 is gathered by communication module first 23 are sent to platform district fixed terminal 1 after processing;
3) set up data collection station 2 to set up communication with both platform district fixed terminals 1 by ZigBee and be connected;
4) in the middle of platform district fixed terminal 1 and user access point, data collection station 2 is pinned zero line, namely pinning zero line by mutual-inductance element 21 and gather data, the voltage data that the voltage data collected by data collection station 2 and platform district fixed terminal 1 originate compares;If voltage is not decay between data collection station 2 and platform district fixed terminal 1, then illustrate in data collection station 2 and platform district fixed terminal 1 not electric leakage;If having bigger voltage attenuation between data collection station 2 and platform district fixed terminal 1, then illustrate there is electric leakage between data collection station 2 and platform district fixed terminal 1。
Wherein, data collection station 2 is provided with two display lamps, respectively status lamp and morse signal light, when data collection station 2 is set up after communication is connected with both platform district fixed terminals 1, the morse signal light of data collection station 2 lights, and data collection station 2 enters duty, namely by mutual-inductance element 21 pick-up voltage data, and the data of pickup are passed to acquisition module 24, data are transmitted platform district fixed terminal 1 by communication module first 23 after the data of collection being processed by acquisition module 24。
If status lamp lights, illustrate to exist electric leakage between platform district fixed terminal 1 and data collection station 2;If status lamp does not work, illustrate between platform district fixed terminal 1 and data collection station 2, be absent from electric leakage。
Described above be binary tree backtracking algorithm。
As, the faulty line ABCDE that need to detect, it is first determined midpoint is C point, and platform district fixed terminal 1 is fixed on A point, data collection station 2 is fixed on C point, if not electric leakage between AC, then the status lamp of data collection station 2 does not work, and illustrates that leakage point of electricity is between CE, data collection station 2 is moved on the midpoint D of CE section and continue above-mentioned steps, if the status lamp of data collection station 2 does not work, not electric leakage between AD is described, otherwise illustrates that leakage point of electricity is between DE。
If platform district fixed terminal 1 is fixed on A point, data collection station 2 is fixed on C point, if there being electric leakage between AC, then the status lamp of data collection station 2 lights。
As shown in Figure 2, the wire resistance of unit length determines that value, thus voltage is linear attenuation through later, and when there are the abnormal conditions such as electric leakage, voltage arises that decay pattern of anomaly。
The resistance assuming the electric wire of 100 meters is 0.5 ohm, and electric current is 100A, and when the electric current that initial voltage is 10000V flows through electric wire, under normal circumstances, the magnitude of voltage measured at the other end should be 9950V。(10000V 100A 0.5 Ω=9950V) and when occur electric leakage time, its resistance value will more than 0.5 Ω, and the voltage recorded is inherently less than 9950V。Assuming that trouble point is X rice from test point。If the voltage recorded at 100 meters of is 9000V, then: (9,950 9000) ÷ 10000=X/100。By can be calculated, X=9.5。Namely trouble point is estimated as 9.5 meters from test point。
As shown in Figure 3, it is possible to each key point fixed installation data acquisition unit terminal in each district。This harvester can pass through telecommunication mode and the status data of each key point is sent to platform district fixed test instrument terminal。Once there is zero line leakage events, detector just can be analyzed according to the data that the harvester received sends, adopt binary tree backtracking algorithm quickly to position the trouble point that electric leakage occurs, and investigation data are issued on-the-spot electrician by GSM, upload data to data center by GPRS。

Claims (6)

1. a Zhong Tai district low-voltage zero line current leakage detection system, including platform district fixed terminal and data collection station two part, it is characterised in that:
Described data collection station is located at platform district and is landed between case and user access point, and described data collection station includes collecting unit, communication module first and power supply first;Described power supply first is described collecting unit and described communication module is powered;Described collecting unit includes mutual-inductance element and acquisition module, the data of collection are sent to described acquisition module by described mutual-inductance element, the data that described mutual-inductance element is gathered by described acquisition module are sent to described communication module first after processing, and the data after the process of described acquisition module are sent to described district's fixed terminal by described communication module first;
Described district's fixed terminal is connected with the transformator disconnecting zero line, and described district's fixed terminal includes communication module second, analysis module and power supply second, and described power supply second is described communication module second and described analysis module is powered;The data that described communication module first is transmitted by described analysis module process, and return to described data collection station;
Described data collection station is connected by ZigBee communication with described district's fixed terminal。
2. a kind of platform district according to claim 1 low-voltage zero line current leakage detection system, it is characterised in that: described mutual-inductance element is connected with described acquisition module, described communication module first and described power supply first by telescopic connecting rod。
3. a kind of platform district according to claim 1 and 2 low-voltage zero line current leakage detection system, it is characterised in that: described data collection station and described district's fixed terminal are equipped with WiFi or/and 3G communication interface。
4. a kind of platform district according to claim 1 and 2 low-voltage zero line current leakage detection system, it is characterised in that: the communication interface of described data collection station and described district's fixed terminal is GPRS communication interface。
5. a kind of platform district according to claim 1 and 2 low-voltage zero line current leakage detection system, it is characterised in that: the communication interface of described data collection station and described district's fixed terminal is GSM communication interface。
6. a Zhong Tai district low-voltage zero line electrical leakage detecting method, it is characterised in that: step is as follows;
One) platform district transformator is disconnected zero line, then Jie Tai district fixed terminal;Described district's fixed terminal includes communication module second, analysis module and power supply second;Described power supply second powers to described communication module second and described analysis module;
Two) between transformator and the user access point of platform district electrical network, it is provided with data collection station, described data collection station includes mutual-inductance element, acquisition module, communication module first and power supply first, and wherein said power supply first is that described mutual-inductance element, described acquisition module, described communication module first are powered;The data of collection are transmitted in described acquisition module by described mutual-inductance element, and described acquisition module is sent to described communication module first after described data being processed, and the data after process are sent to platform district fixed terminal by described communication module first;The data that described communication module first is transmitted by described analysis module process, and return to described data collection station;
Portable analysis terminal is connected by ZigBee communication with described district's fixed terminal;
Three) set up described data collection station to be connected with the communication of both described district's fixed terminals;
Four) middle of described district's fixed terminal and user access point it is positioned at, described data collection station is pinned zero line, if voltage is not decayed between described data collection station and described district's fixed terminal, then illustrate not leak electricity at described data collection station and described district's fixed terminal;If voltage attenuation is relatively big between described data collection station and described district's fixed terminal, then illustrate there is electric leakage at described data collection station and described district's fixed terminal。
CN201210436557.0A 2012-11-05 2012-11-05 Platform district low-voltage zero line current leakage detection system and detection of electrical leakage method Expired - Fee Related CN103809060B (en)

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CN104360236A (en) * 2014-11-20 2015-02-18 国家电网公司 Quick detection complete device and method for electric leakage points of 0.4 kV overhead line
CN105738763B (en) * 2016-02-16 2018-11-06 国家电网公司 Low pressure TT wiring system taiwan areas electric leakage independent positioning method and special detection tool
CN105823959A (en) * 2016-03-17 2016-08-03 杭州普安科技有限公司 Android device-based power user mounting detection method

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KR100575228B1 (en) * 2003-09-25 2006-05-02 한전케이디엔 주식회사 Personal digital assistant inspection system of power meter for using power line communication and inspection method thereof
CN2896633Y (en) * 2006-04-05 2007-05-02 丁文军 Residual current protector capable of wireless communicating
CN201315635Y (en) * 2008-12-12 2009-09-23 宁夏电力公司超高压电网运行分公司 High meter observation device
CN101593938A (en) * 2009-03-20 2009-12-02 浙江昌泰科技股份有限公司 Digitalized low-voltage comprehensive distribution box
CN101699707B (en) * 2009-10-19 2013-06-05 中国电力科学研究院 Distribution type method for protecting residual current of low voltage power supply system
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