CN103439550A - Electricity stealing prevention device capable of being mounted in electrified mode and mounting method thereof - Google Patents
Electricity stealing prevention device capable of being mounted in electrified mode and mounting method thereof Download PDFInfo
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- CN103439550A CN103439550A CN2013103602874A CN201310360287A CN103439550A CN 103439550 A CN103439550 A CN 103439550A CN 2013103602874 A CN2013103602874 A CN 2013103602874A CN 201310360287 A CN201310360287 A CN 201310360287A CN 103439550 A CN103439550 A CN 103439550A
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Abstract
Disclosed are an electricity stealing prevention device capable of being mounted in an electrified mode and a mounting method thereof. The electricity stealing prevention device comprises a digital recorder, a high frequency detection module, three high-voltage wireless detection units, three current transformers, an RF antenna and a GPRS antenna. The digital recorder is connected with a user electricity meter. The high frequency detection module is connected with the digital recorder. The three high-voltage wireless detection units are connected with the digital recorder. The three current transformers are connected with the digital recorder. The RF antenna and the GPRS antenna are both connected with the digital recorder. The electricity stealing prevention device capable of being mounted in the electrified mode can timely discover the illegal criminal activity of electricity stealing personnel, after electricity meter operation is discovered to be abnormal, administrative staff can be timely informed through short messages or a gprs network, power grid workers can be reminded to timely investigate and treat the activity, and therefore power grid safety and social security can be guaranteed. In addition, due to the fact that the electricity stealing prevention device can be mounted in the electrified mode by the aid of the mounting method, normal operation of a power grid can not be disturbed.
Description
Technical field
The invention belongs to electric power anti-theft electricity technology field, particularly relate to a kind of device against charge evasion and installation method that can charged installation.
Background technology
In recent years, the stealing criminal offence, except having disguise, mobility, the essential characteristic such as sudden, also presents specialization, high-technicalization, the trend of fleeing transprovincially, investigates and prosecutes difficulty increasing.From the case of investigating and prosecuting, part stealing family takes that the special messenger is on duty, installing monitoring remote control equipment, obstruct the power utility check personnel and enter scene, destroy the means such as the on-the-spot evidence of stealing rapidly, take precautions against, stop the inspection of opposing electricity-stealing, even besiege, abuse, hit the personnel of opposing electricity-stealing, so the problems such as investigation difficulty, evidence obtaining is difficult, processing is difficult of opposing electricity-stealing are comparatively outstanding.In a word, mainly there is at present following several respects problem:
When one, the power utility check personnel arrive the inspection of suspicion user measuring apparatus, the lawless person will remove such as the stealings such as high frequency equipment in advance, be difficult to find.
Even phenomenons such as two discovery table casees are destroyed, owing to lacking strong evidence, the lawless person does not admit the stealing fact yet, causes and processes difficult present situation.
Three, the stealing mode such as high frequency is because the power information acquisition system is difficult to find, at present the white space in monitoring.
In addition, some enterprises take the stealing mode to reduce operating cost, illegitimately make exorbitant profits, and have also destroyed market fair competition principle simultaneously, have damaged lawful operation person's of the same trade or business interests; Often cause the serious problems such as power supply and power use facilities damage, large-area power-cuts and personal injury, threaten power grid security and social safety, make a very bad impression, very harmful.How efficiently and effectively is carried out the line loss management work of power supply enterprise, further improves the management level of power supply enterprise, is the important topic of pendulum in face of power supply enterprise.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of device against charge evasion and installation method that can charged installation.
In order to achieve the above object, device against charge evasion that can charged installation provided by the invention comprises digital recorder, high-frequency detection module, three high-voltage radio probe units, three current transformers, radio-frequency antenna and GPRS antennas; Wherein: digital recorder is the monitoring device of opposing electricity-stealing, and it is connected with electric supply meter with power lead by null modem cable;
The high-frequency detection module is the high frequency device against charge evasion, and for the high-frequency electromagnetic field signal around the monitor user ' ammeter, it is connected with digital recorder with power lead by null modem cable;
Three high-voltage radio probe units are for being arranged on respectively three wireless current transformers on high pressure primary side three-phase inlet wire, and the mode by wireless radiofrequency is connected with digital recorder, for gathering the three-phase electricity flow valuve of high pressure point of incoming cables;
Three current transformers are current transformer before three tables that are arranged on the electric supply meter inlet wire, comprise Current Transmit a, CTb, CTc, and it is connected with digital recorder respectively, for gathering the inlet wire current value of electric supply meter point of incoming cables;
Radio-frequency antenna is to carry out the antenna that radio communication is used between digital recorder and high-voltage radio probe unit, and it is connected with digital recorder;
Carry out by GPRS network the antenna that radio communication is used between the TT&C system that the GPRS antenna is digital recorder and far-end, it is connected with digital recorder.
The installation method of device against charge evasion that can charged installation provided by the invention comprises that install high-pressure side and the electric supply meter side is installed, and wherein high-pressure side is installed and comprised the following step of execution in order:
Step 4, place the high-voltage radio probe unit: a high-voltage radio probe unit to be installed is placed in the upper end open of link rod, and makes the collection jaw of high-voltage radio probe unit make progress and open;
The electric supply meter side is installed and is comprised the following step of carrying out in order:
Step 4, install radio-frequency antenna: select the position that communication environment is relatively good that radio-frequency antenna is installed, and radio-frequency antenna is connected with the antenna terminal MF of digital recorder;
Step 7, confirm that GPRS connects normal: adjust the correlation parameter of digital recorder, guarantee that digital recorder realizes reliable wireless connections by the control system of GPRS network and far-end;
Step 8, connect null modem cable: null modem cable Sa, the Sb of digital recorder are connected with serial communication terminal A, the B of electric supply meter respectively;
Step 9, confirm that the digital recorder serial communication is normal: detect the communication conditions of electric supply meter and digital recorder by digital recorder, guarantee between digital recorder and electric supply meter 7 communicate by letter normal;
Step 10, the high-frequency detection module is installed: the place that the high-frequency detection module is fixed on to as far as possible close electric supply meter, two power leads of high-frequency detection module are connected with power lead N with the power lead L of datalogger respectively, and null modem cable A, the B of high-frequency detection module is connected with null modem cable Sa, the Sb of digital recorder respectively;
Device against charge evasion that can charged installation provided by the invention can be found the criminal offence of stealing molecule in time, after finding that abnormal conditions appear in the ammeter operation, can notify managerial personnel by note or gprs network in time, to remind the network operation personnel to investigate and prosecute in time, thereby can guarantee power grid security and social safety.In addition, this installation method can charged installation device against charge evasion, therefore can not disturb the normal operation of electrical network.
The accompanying drawing explanation
Fig. 1 is device against charge evasion structural representation that can charged installation provided by the invention.
Fig. 2-Fig. 5 is device against charge evasion installation process schematic diagram that can charged installation provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, device against charge evasion and installation method that can charged installation provided by the invention be elaborated.
As shown in Figure 1, device against charge evasion that can charged installation provided by the invention comprises: digital recorder 1, high-frequency detection module 2, three high-voltage radio probe units 3, three current transformers 4, radio-frequency antenna 5 and GPRS antennas 6; Wherein: digital recorder 1 is the monitoring device of opposing electricity-stealing, and it is connected with electric supply meter 7 with power lead L, N by null modem cable Sa, Sb;
High-frequency detection module 2 is the high frequency device against charge evasion, and for the high-frequency electromagnetic field signal around monitor user ' ammeter 7, it is connected with digital recorder 1 with power lead L, N by null modem cable Sa, Sb;
Three high-voltage radio probe units 3 are for being arranged on respectively three wireless current transformers on high pressure primary side three-phase inlet wire, and the mode by wireless radiofrequency is connected with digital recorder 1, for gathering the three-phase electricity flow valuve of high pressure point of incoming cables;
Three current transformers 4 are current transformer before three tables that are arranged on electric supply meter 7 inlet wires, comprise Current Transmit a, CTb, CTc, and it is connected with digital recorder 1 respectively, for gathering the inlet wire current value of electric supply meter 7 points of incoming cables;
Radio-frequency antenna 5 is for carrying out the antenna that radio communication is used between digital recorder 1 and high-voltage radio probe unit 3, and it is connected with digital recorder 1;
Carry out by GPRS network the antenna that radio communication is used between the TT&C system of GPRS antenna 6 for digital recorder 1 and far-end, it is connected with digital recorder 1.
The installation method of device against charge evasion that can charged installation provided by the invention comprises that install high-pressure side and the electric supply meter side is installed, and wherein: high-pressure side is installed and comprised the following step of execution in order:
Step 4, place the high-voltage radio probe unit: as shown in Figure 4, a high-voltage radio probe unit 3 to be installed is placed in the upper end open 13 of link rod 11, and makes the collection jaw 14 of high-voltage radio probe unit 3 make progress and open;
The electric supply meter side is installed and is comprised the following step of carrying out in order:
Step 4, install radio-frequency antenna: select the position that communication environment is relatively good that radio-frequency antenna 5 is installed, and radio-frequency antenna 5 is connected with the antenna terminal MF of digital recorder 1;
Step 7, confirm that GPRS connects normal: adjust the correlation parameter of digital recorder 1, guarantee that digital recorder 1 realizes reliable wireless connections by the control system of GPRS network and far-end;
Step 8, connect null modem cable: null modem cable Sa, the Sb of digital recorder 1 are connected with serial communication terminal A, the B of electric supply meter 7 respectively;
Step 9, confirm that the digital recorder serial communication is normal: detect the communication conditions of electric supply meter 7 and digital recorder 1 by digital recorder 1, guarantee between digital recorder 1 and electric supply meter 7 communicate by letter normal;
Step 10, the high-frequency detection module is installed: the place that high-frequency detection module 2 is fixed on to as far as possible close electric supply meter 7, two power leads of high-frequency detection module 2 are connected with power lead N with the power lead L of datalogger 1 respectively, and null modem cable A, the B of high-frequency detection module 2 is connected with null modem cable Sa, the Sb of digital recorder 1 respectively;
Install described high-pressure side and the installation of electric supply meter side all can be in the situation that do not had a power failure.
Device against charge evasion that can charged installation provided by the invention mainly comprises high-voltage radio probe unit, datalogger and three parts of high-frequency detection module.This device can charged installation in electric meter box, without power failure.The high-voltage radio probe unit is arranged on the 10KV side, with the charged installation of insulating bar, by wireless transmission, sends data to datalogger.Datalogger, directly from the ammeter power taking, by the data on 485 mouthfuls of collection ammeters of ammeter, after finding ammeter operation exception situation, is notified managerial personnel by note or gprs network.
Claims (2)
- One kind can charged installation device against charge evasion, it is characterized in that: described installation method comprises: digital recorder (1), high-frequency detection module (2), three high-voltage radio probe units (3), three current transformers (4), radio-frequency antenna (5) and GPRS antenna (6); Wherein: digital recorder (1) is the monitoring device of opposing electricity-stealing, and it is connected with electric supply meter (7) with power lead L, N by null modem cable Sa, Sb;High-frequency detection module (2) is the high frequency device against charge evasion, the high-frequency electromagnetic field signal on every side for monitor user ' ammeter (7), and it is connected with digital recorder (1) with power lead L, N by null modem cable Sa, Sb;Three high-voltage radio probe units (3) are for being arranged on respectively three wireless current transformers on high pressure primary side three-phase inlet wire, and mode and digital recorder (1) by wireless radiofrequency are connected, for gathering the three-phase electricity flow valuve of high pressure point of incoming cables;Three current transformers (4) are current transformer before three tables that are arranged on electric supply meter (7) inlet wire, comprise Current Transmit a, CTb, CTc, it is connected with digital recorder (1) respectively, for gathering the inlet wire current value of electric supply meter (7) point of incoming cables;Radio-frequency antenna (5) is for carrying out the antenna that radio communication is used between digital recorder (1) and high-voltage radio probe unit (3), and it is connected with digital recorder (1);Carry out by GPRS network the antenna that radio communication is used between the TT&C system of GPRS antenna (6) for digital recorder (1) and far-end, it is connected with digital recorder (1).
- 2. the installation method of a device against charge evasion that can charged installation as claimed in claim 1, it is characterized in that: described installation method comprises that install high-pressure side and the electric supply meter side is installed, wherein: high-pressure side is installed and is comprised the following step of execution in order:Step 1, determine installation site: determine three high-voltage radio probe units (3) are arranged on respectively on A, B, the C three-phase high-voltage inlet wire of user transformers (01) high-pressure side (02);Step 2, confirm that whether the work of high-voltage radio probe unit is normal: open the power switch of three high-voltage radio probe units (3), by on-the-spot test, confirm that three high-voltage radio probe units (3) can both normally gather and send data;Step 3, prepare erecting tools: the red knob (12) on link rod (11) upper end open (13) that installation high-voltage wireless exploration unit (3) is used is adjusted to downwards, so that link rod (11) is in installment state;Step 4, place the high-voltage radio probe unit: a high-voltage radio probe unit (3) to be installed is placed in the upper end open (13) of link rod (11), and makes the collection jaw (14) of high-voltage radio probe unit (3) make progress and open;Step 5, installation high-voltage wireless exploration unit: by link rod (11), high-voltage radio probe unit (3) is delivered to the below of a high pressure inlet wire (15), and made high pressure inlet wire (15) be embedded into fully among the collection jaw (14) that high-voltage radio probe unit (3) opens; Then by link rod (11), high-voltage radio probe unit (3) is pushed away vertically upward, the collection jaw (14) that makes high-voltage radio probe unit (3) open is closure fully, will be embedded in thus the high pressure inlet wire (15) gathered in jaw (14) and be enclosed among the closed rear formed closed loop of collection jaw (14);Step 6, completing high-pressure side installs: the link rod (11) of slowly backing off, complete the installation of a high-voltage radio probe unit (3), repeat above-mentioned step 4 and step 5, until three high-voltage radio probe units (3) are arranged on respectively on three hi-lines of high pressure inlet wire A, B, C three-phase, high-pressure side is installed so far and is finished;The electric supply meter side is installed and is comprised the following step of carrying out in order:Step 1, install digital recorder: installation stationary digital registering instrument (1) near electric supply meter (7);Step 2, the power lead of connection digital recorder: power lead L, the N of datalogger (1) are received on the Voltage-output terminal of electric supply meter (7); When the wiring of 100V phase three-wire three ammeter, the terminals that the power lead L of datalogger (1) and power lead N are connected to wantonly two phase lines connect; When the wiring of 380V three-phase four-wire system ammeter, power lead L is connected with any phase line in three phase lines, power lead N is received on the zero terminal of ammeter;Step 3, confirm the digital recorder normal operation: open the power switch of digital recorder (1), the working condition of each one of inspection apparatus, guarantee that digital recorder (1) is in normal running status;Step 4, install radio-frequency antenna: select the position that communication environment is relatively good that radio-frequency antenna (5) is installed, and radio-frequency antenna (5) is connected with the antenna terminal MF of digital recorder (1);Step 5, confirm that the high-voltage radio probe unit connects normal: adjust the correlation parameter of digital recorder (1), guarantee that the radio communication between high-voltage radio probe unit (3) and digital recorder (1) is reliable and stable;Step 6, install the GPRS antenna: select the position that communication environment is relatively good that GPRS antenna (6) is installed, and GPRS antenna (6) is connected with the antenna terminal GPRS of digital recorder (1);Step 7, confirm that GPRS connects normal: adjust the correlation parameter of digital recorder (1), guarantee that digital recorder (1) realizes reliable wireless connections by the control system of GPRS network and far-end;Step 8, connect null modem cable: null modem cable Sa, the Sb of digital recorder (1) are connected with serial communication terminal A, the B of electric supply meter (7) respectively;Step 9, confirm that the digital recorder serial communication is normal: detect the communication conditions of electric supply meter (7) and digital recorder (1) by digital recorder (1), guarantee between digital recorder (1) and electric supply meter (7) communicate by letter normal;Step 10, the high-frequency detection module is installed: the place that high-frequency detection module (2) is fixed on to as far as possible close electric supply meter (7), two power leads of high-frequency detection module (2) are connected with power lead N with the power lead L of datalogger (1) respectively, and null modem cable A, the B of high-frequency detection module (2) is connected with null modem cable Sa, the Sb of digital recorder (1) respectively;Step 11, confirm high-frequency detection module normal operation: detect the communication conditions of high-frequency detection module (2) and digital recorder (1) by digital recorder (1), guarantee between digital recorder (1) and high-frequency detection module (2) communicate by letter normal;Step 12, current transformer is installed: three tables front Current Transmit a, CTb, CTc are installed, for the three-phase three-wire system ammeter: Current Transmit a is stuck on the A phase inlet wire before table, and its secondary output terminal is connected with the current acquisition input end Ia of digital recorder (1); Current Transmit c is stuck on the front C phase inlet wire of table, and its secondary output terminal is connected with the current acquisition input end Ic of digital recorder (1); Current Transmit b is stuck in before table on the A phase inlet wire between leading-in box (8) and electric supply meter (7), and its secondary output terminal is connected with the current acquisition input end Ib of digital recorder (1); For the three-phase four-wire system ammeter: Current Transmit a, CTb, CTc before three tables are stuck in respectively in order on A, B, the C tri-line inlet wires of inlet wire before table, its three secondary output terminals are connected with current acquisition input end Ia, Ib, the Ic of digital recorder (1) respectively successively;Step 13, confirm the current transformer normal operation: detect three current transformers (4) by digital recorder (1), guarantee that three current transformers (4) can normally gather the current value of electric supply meter 7 inlet wire current;Step 14, confirm that the repertoire of this device is working properly: the careful ruuning situation of each one of check dight registering instrument (1), guarantee that this installs each one stable, normal; User's side is installed so far and is finished.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103954815A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Electricity larceny prevention check main machine |
CN103954816A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Inelegant remote anti-electricity-stealing inspection method |
CN104157529A (en) * | 2014-07-30 | 2014-11-19 | 江苏省电力公司洪泽县供电公司 | Special insulation rod for single-column and all-insulated line connector |
CN104237590A (en) * | 2014-09-26 | 2014-12-24 | 国家电网公司 | Active electricity larceny prevention device and method aiming at magnetic electricity larceny compensation metering |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101201364A (en) * | 2007-01-26 | 2008-06-18 | 杨英熙 | High pressure measurement device and antitheft electric method for high-low pressure electric quantity measurement contrast |
US20110121658A1 (en) * | 2008-04-15 | 2011-05-26 | Toyota Jidosha Kabushiki Kaisha | Wireless energy transfer device |
CN201974461U (en) * | 2011-03-15 | 2011-09-14 | 重庆电力科学试验研究院 | Electricity stealing prevention system |
CN102435804A (en) * | 2011-10-11 | 2012-05-02 | 天津市电力公司 | Method and wireless detection module for detecting electricity stealing of wireless remote control device based on intelligent electric energy meter |
CN202720264U (en) * | 2012-04-26 | 2013-02-06 | 北京新源绿网节能科技有限公司 | Remote monitoring system for electricity consumption |
CN103035106A (en) * | 2012-09-25 | 2013-04-10 | 邯郸供电公司 | Wireless remote control power-stealing detector |
CN202929078U (en) * | 2012-11-20 | 2013-05-08 | 北京新源绿网节能科技有限公司 | High-frequency signal monitoring device |
-
2013
- 2013-08-19 CN CN201310360287.4A patent/CN103439550B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101201364A (en) * | 2007-01-26 | 2008-06-18 | 杨英熙 | High pressure measurement device and antitheft electric method for high-low pressure electric quantity measurement contrast |
US20110121658A1 (en) * | 2008-04-15 | 2011-05-26 | Toyota Jidosha Kabushiki Kaisha | Wireless energy transfer device |
CN201974461U (en) * | 2011-03-15 | 2011-09-14 | 重庆电力科学试验研究院 | Electricity stealing prevention system |
CN102435804A (en) * | 2011-10-11 | 2012-05-02 | 天津市电力公司 | Method and wireless detection module for detecting electricity stealing of wireless remote control device based on intelligent electric energy meter |
CN202720264U (en) * | 2012-04-26 | 2013-02-06 | 北京新源绿网节能科技有限公司 | Remote monitoring system for electricity consumption |
CN103035106A (en) * | 2012-09-25 | 2013-04-10 | 邯郸供电公司 | Wireless remote control power-stealing detector |
CN202929078U (en) * | 2012-11-20 | 2013-05-08 | 北京新源绿网节能科技有限公司 | High-frequency signal monitoring device |
Non-Patent Citations (1)
Title |
---|
冯凌等: "基于无线通信的防窃电系统设计", 《电测与仪表》, vol. 48, no. 546, 30 June 2011 (2011-06-30), pages 54 - 57 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103954815A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Electricity larceny prevention check main machine |
CN103954816A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Inelegant remote anti-electricity-stealing inspection method |
CN104157529A (en) * | 2014-07-30 | 2014-11-19 | 江苏省电力公司洪泽县供电公司 | Special insulation rod for single-column and all-insulated line connector |
CN104237590A (en) * | 2014-09-26 | 2014-12-24 | 国家电网公司 | Active electricity larceny prevention device and method aiming at magnetic electricity larceny compensation metering |
CN104237590B (en) * | 2014-09-26 | 2018-01-12 | 国家电网公司 | A kind of active anti-electricity-theft device and the method for strong magnetic stealing compensation measurement |
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