CN102095924A - Detection device for power utilization and measurement of high-voltage circuit - Google Patents

Detection device for power utilization and measurement of high-voltage circuit Download PDF

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Publication number
CN102095924A
CN102095924A CN 201010578833 CN201010578833A CN102095924A CN 102095924 A CN102095924 A CN 102095924A CN 201010578833 CN201010578833 CN 201010578833 CN 201010578833 A CN201010578833 A CN 201010578833A CN 102095924 A CN102095924 A CN 102095924A
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China
Prior art keywords
module
mutual inductor
current signal
signal
output
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CN 201010578833
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Chinese (zh)
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崔大鹏
董强
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TIANJIN XIANGSHENGYUAN ELECTRIC POWER EQUIPMENT INDUSTRIAL Co Ltd
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TIANJIN XIANGSHENGYUAN ELECTRIC POWER EQUIPMENT INDUSTRIAL Co Ltd
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Priority to CN 201010578833 priority Critical patent/CN102095924A/en
Publication of CN102095924A publication Critical patent/CN102095924A/en
Pending legal-status Critical Current

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Abstract

The invention belongs to the field of detection of a power system, and in particular relates to a device used for detecting a high-voltage circuit. The device comprises a transformer electricity utilizing module, a power management module, a signal shaping module and an embedded processing module, wherein the transformer electricity utilizing module is used for converting heavy-current signals in the high-voltage circuit into low-current signals by utilizing the electromagnetic induction principle, and outputting the low-current signals; the power management module is used for processing the received low-current signals output by the transformer electricity utilizing module to be used as a power supply; the signal shaping module is used for precisely rectifying the received low-current signals output by the transformer electricity utilizing module into pulse direct-current signals, and outputting the pulse direct-current signals; and the embedded processing module is used for judging and analyzing the received low-current signals so as to form digital signals, and outputting the digital signals. By adopting the structures of the embedded processing module and the like, the device integrates the functions of electricity utilization and measurement, greatly reduces the risks of violent electromagnetic interference and easy damage of the outside in transmission of signals, enables a transformer to be arranged on the power line at will, and enables the transformer to be more intelligent and digitalized.

Description

A kind of pick-up unit that is used for high-tension line power taking and measurement
Technical field
The invention belongs to the electric system detection range, relate in particular to a kind of pick-up unit that is used for high-tension line power taking and measurement.
Background technology
At present, electric system often adopts alternating voltage, big current return that electric power is sent to the user for electric energy transmitting, can't directly measure with instrument.For the electrical parameter of high pressure electric line is measured; grasp the operation of power networks situation; people adopt mutual inductor that alternating voltage and big electric current are dropped to the numerical value that can directly measure with instrument in proportion, are convenient to instrument and directly measure, and provide power supply for relay protection and aut.eq. simultaneously.
Traditional electric system just is delivered to low-voltage, little electric current with the information of electrical network high voltage, big electric current with mutual inductor, transfers to special power measurement equipment then the circuit electric weight is detected.Because the installation site is fixed, live wire is got in touch between mutual inductor and the measurement mechanism, so be easy to be damaged and destroy, in addition owing to the strong electromagnetic interference (EMI) of high voltage, also can largely influence the measuring accuracy of surveying instrument.
Summary of the invention
The present invention provides a kind of device that is used to detect high-tension line for solving the technical matters that exists in the known technology, be intended to solve because the conventional detection devices installation site is fixed, live wire is got in touch between mutual inductor and the measurement mechanism, so be easy to be damaged and destroy, and, also can largely influence the problem of the measuring accuracy of surveying instrument owing to the strong electromagnetic interference (EMI) of high voltage.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology:
A kind of device that is used to detect high-tension line, this device comprises:
Utilize electromagnetic induction principle, the big current signal in the high-tension line is become the go forward side by side mutual inductor electricity-fetching module of line output of little current signal;
The little current signal that the described mutual inductor electricity-fetching module that receives is exported is handled the power management module of back as power supply;
The little current signal of the described mutual inductor electricity-fetching module output that receives is carried out precision rectifying become the go forward side by side signal shaping module of line output of pulsating direct current signal;
The go forward side by side embedded processing module of line output of back formation digital signal is judged, is analyzed to the little current signal of the described signal shaping module output that receives.
Another object of the present invention also is to provide a kind of high-tension line checkout equipment that comprises said apparatus.
The present invention can also be further by the following technical solutions:
Receive the digital signal and the information communication module that sends the staff to regularly of the output of embedded processing module.
Device be equipped with have step-down, the power management module of voltage stabilizing, filtering, signal amplifying function.
The present invention collects power taking and measurement and one, has avoided by the mutual inductor power taking, and being electrically connected between being measured by measurement instrument then so just greatly reduces signal and be subjected to intense electromagnetic to disturb and be subjected to easily the risk of extraneous infringement in transmission course.Be both the restriction that the installation that also makes mutual inductor no longer is subjected to the installation site, can arbitrarily be installed on the power circuit, rather than intelligence is installed near the electric power tower bar.By the employing of embedded processing module, introduce digitized treatment technology in addition, make mutual inductor that self-judgement arranged, intelligent more, digitizing, integrated, succinct practicability.
Description of drawings
Fig. 1 is the structured flowchart of the device that is used for high-tension line power taking and measurement that provides of the embodiment of the invention;
Fig. 2 is the circuit diagram of the mutual inductor electricity-fetching module that provides of the embodiment of the invention;
Fig. 3 is the circuit diagram of the power management module that provides of the embodiment of the invention;
Fig. 4 is the circuit diagram of the signal shaping module that provides of the embodiment of the invention;
Fig. 5 is the structural drawing of the embedded processing module that provides of the embodiment of the invention;
Fig. 6 is the structural drawing of the information communication module that provides of the embodiment of the invention.
Embodiment
For further understanding utility model content of the present invention, characteristics and effect, exemplify the following example of executing now, and conjunction with figs. is described in detail as follows:
The embodiment of the invention unites two into one traditional power taking mutual inductor and power system measuring device, utilizes modern advanced Power Electronic Technique, and the simulating signal of gathering is carried out digitized processing, make mutual inductor that self-judgement arranged, intelligent more, digitizing, integrated, succinct practicability.
Fig. 1 shows the structured flowchart of the pick-up unit that is used for high-tension line power taking and measurement that the embodiment of the invention provides, and for convenience of explanation, only shows part related to the present invention.
This device mainly comprises mutual inductor electricity-fetching module 11, power management module 12, signal shaping module 13, embedded processing module 14.
Mutual inductor electricity-fetching module 11 proportionally drops to the big electric current in the high-tension line in the little electric current of standard and forms little current signal;
The little current signal of mutual inductor electricity-fetching module 11 outputs of 12 pairs of receptions of power management module is handled as power supply, powers to total system;
The little current signal of mutual inductor electricity-fetching module 11 output of 13 pairs of receptions of signal shaping module carries out the precision rectifying line output of going forward side by side.
The little current signal of embedded processing module 14 mutual inductor electricity-fetching modules 11 output is judged, is analyzed and form digital signal and transmits;
Preferred version as the embodiment of the invention, the structure of this device as shown in Figure 2, mutual inductor electricity-fetching module 11 structures are as follows: resistance R 1 is connected with diode D1, resistance R 2 is connected with diode D2, both are connected in parallel between output port and the ground more then, and capacitor C 1 is connected in parallel on output port.Two terminal A, B of mutual inductor are connected on respectively between resistance R 1 and diode D1 and resistance R 2 and the diode D2, respectively from two terminal A, B of mutual inductor go between SIN1 and SIN 2, SIN 1 and SIN 2 are wired to the input port of signal shaping module 13 at last.
The current transformer that mutual inductor electricity-fetching module 11 comprises utilizes electromagnetic induction principle to obtain the voltage signal of effective value for u=+5v from high-tension bus-bar, positive half cycle at u, the A point voltage is for just, c point ground connection, the B point voltage is for negative so, and diode D1 adds forward voltage, thereby is in conducting state, diode D2 adds negative voltage, is in cut-off state (go up diode and be filtered into positive half-wave); At the negative half period of u, the A point voltage is for negative, c point ground connection, and the B point voltage is for just so, and diode D1 adds negative voltage, thereby is in cut-off state, and diode D2 adds forward voltage, is in conducting state (following diode is filtered into negative half-wave).Thus, the AC wave shape of current signal is converted to the all-wave waveform,, thereby realizes filtering, the DC voltage of pulsation is become level and smooth DC voltage+5V offer power management module 12 again by in the output terminal D of rectification circuit capacitor C 1 in parallel.SIN 1 and SIN 2 are connected to two signal shaping modules 13 with the current signal of gathering respectively, latter two signal shaping module 13 passes to embedded processing module 14 with the current signal that becomes pulsating direct current behind the precision truing, the amplitude of 14 pairs of two-way sampled signals of embedded processing module compares, obtain amplitude bigger a road carry out analyzing and testing as useful signal.Thereby finish task to the power taking and the detection of high-voltage electric power circuit.So just realized, power taking and monitoring have been united two into one, made it become one independently, the new transformer of collection power taking and measurement and one.In addition, this device can also set up information communication module 15 receive the digital signal of embedded processing modules 14 outputs and regularly send the staff to.Information communication module 15 can adopt GSM, 3G (SMS/GPRS) information communication module.
As the specific embodiment of the present invention, power management module 12 can adopt structure shown in Figure 3; Signal shaping module 13 can adopt chip AD8277 or 2NA2132 (this two chip can directly be replaced) to realize its function, and structure as shown in Figure 4; Embedded processing module 14 can adopt structure shown in Figure 5; Information communication module 15 can adopt structure shown in Figure 6.
The embodiment of the invention also is to provide a kind of high-tension line checkout equipment, is widely used in the high-tension line detection range.
Power taking of embodiment of the invention collection and measurement and one have been avoided by the mutual inductor power taking, and being electrically connected between being measured by measurement instrument then so just greatly reduces signal and be subjected to intense electromagnetic to disturb and be subjected to easily the risk of extraneous infringement in transmission course.Be both the restriction that the installation that also makes mutual inductor no longer is subjected to the installation site, can arbitrarily be installed on the power circuit, rather than intelligence is installed near the electric power tower bar.By the employing of embedded processing module 14, introduce digitized treatment technology in addition, make mutual inductor that self-judgement arranged, intelligent more, digitizing, integrated, succinct practicability makes traditional mutual inductor enter brand-new epoch.Its application mode can be installed on the electric system power circuit flexibly, also can be used with other functional modules, common more powerful power transmission and distribution detection system and the electrical network feed system of composition function.
The above only is to preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention is to any simple modification that above embodiment did, and equivalent variations and modification all belong in the scope of technical solution of the present invention.

Claims (7)

1. a device that is used to detect high-tension line is characterized in that, described device comprises:
Utilize electromagnetic induction principle, the big current signal in the high-tension line is become the go forward side by side mutual inductor electricity-fetching module of line output of little current signal;
The little current signal that the described mutual inductor electricity-fetching module that receives is exported is handled the power management module of back as power supply;
The little current signal of the described mutual inductor electricity-fetching module output that receives is carried out precision rectifying become the go forward side by side signal shaping module of line output of pulsating direct current signal;
The go forward side by side embedded processing module of line output of back formation digital signal is judged, is analyzed to the little current signal of the described signal shaping module output that receives.
2. device as claimed in claim 1 is characterized in that, described mutual inductor electricity-fetching module comprises:
Resistance R 1 connect with diode D1 back and resistance R 2 of connect and diode D2 parallel connection, an end ground connection of back in parallel circuit, the described power management module of other end process capacitor C 1 connection; Two terminal A, B of mutual inductor are connected on respectively between described resistance R 1, diode D1 and resistance R 2, the diode D2, and the same respectively described signal shaping module of described two terminal A, B is connected.
3. device as claimed in claim 1 is characterized in that, described device also comprises:
The digital signal that receives described embedded processing module output also periodically sends staff's information communication module to.
4. device as claimed in claim 1 is characterized in that, described device be equipped with have step-down, the power management module of voltage stabilizing, filtering, signal amplifying function.
5. high-tension line checkout equipment, this equipment is equipped with the device that is used to detect high-tension line, it is characterized in that, and the described device that is used to detect high-tension line comprises:
Utilize electromagnetic induction principle, the big current signal in the high-tension line is become the go forward side by side mutual inductor electricity-fetching module of line output of little current signal;
The little current signal that the described mutual inductor electricity-fetching module that receives is exported is handled the power management module of back as power supply;
The little current signal of the described mutual inductor electricity-fetching module output that receives is carried out precision rectifying become the go forward side by side signal shaping module of line output of pulsating direct current signal;
The go forward side by side embedded processing module of line output of back formation digital signal is judged, is analyzed to the little current signal of the described signal shaping module output that receives.
6. checkout equipment as claimed in claim 5 is characterized in that, described mutual inductor electricity-fetching module comprises:
Resistance R 1 connect with diode D1 back and resistance R 2 of connect and diode D2 parallel connection, an end ground connection of back in parallel circuit, the described power management module of other end process capacitor C 1 connection; Two terminal A, B of mutual inductor are connected on respectively between described resistance R 1, diode D1 and resistance R 2, the diode D2, and the same respectively described signal shaping module of described two terminal A, B is connected.
7. checkout equipment as claimed in claim 5 is characterized in that, the described device that is used to detect high-tension line also comprises:
The digital signal that receives described embedded processing module output also periodically sends staff's information communication module to.
CN 201010578833 2010-12-08 2010-12-08 Detection device for power utilization and measurement of high-voltage circuit Pending CN102095924A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN 201010578833 CN102095924A (en) 2010-12-08 2010-12-08 Detection device for power utilization and measurement of high-voltage circuit

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102565567A (en) * 2011-10-28 2012-07-11 江苏省电力公司连云港供电公司 Dynamic increasing capacity on-line monitoring device for power transmission line
CN103675431A (en) * 2013-12-03 2014-03-26 浙江华采科技有限公司 Current collecting device on power transmission line
CN104319895A (en) * 2014-11-12 2015-01-28 国家电网公司 Intelligent distributing line monitoring terminal
CN111751656A (en) * 2020-06-05 2020-10-09 水木源华电气有限公司 Voltage and current measurement energy-taking device for power transmission and distribution line

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1655421A (en) * 2004-12-10 2005-08-17 武汉大学 Induction powered apparatus for overhead high tension transmission lines
CN201256075Y (en) * 2008-09-24 2009-06-10 河南索凌电气有限公司 High-voltage current transducer
CN101487859A (en) * 2008-01-15 2009-07-22 湖北盛佳电器设备有限公司 High-voltage direct measurement apparatus
CN101697430A (en) * 2009-11-12 2010-04-21 上海交通大学 Power control method based CT electricity getting device of high voltage transmission line
CN202013376U (en) * 2010-12-08 2011-10-19 天津市翔晟远电力设备实业有限公司 Device and equipment used for detecting high voltage lines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1655421A (en) * 2004-12-10 2005-08-17 武汉大学 Induction powered apparatus for overhead high tension transmission lines
CN101487859A (en) * 2008-01-15 2009-07-22 湖北盛佳电器设备有限公司 High-voltage direct measurement apparatus
CN201256075Y (en) * 2008-09-24 2009-06-10 河南索凌电气有限公司 High-voltage current transducer
CN101697430A (en) * 2009-11-12 2010-04-21 上海交通大学 Power control method based CT electricity getting device of high voltage transmission line
CN202013376U (en) * 2010-12-08 2011-10-19 天津市翔晟远电力设备实业有限公司 Device and equipment used for detecting high voltage lines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102565567A (en) * 2011-10-28 2012-07-11 江苏省电力公司连云港供电公司 Dynamic increasing capacity on-line monitoring device for power transmission line
CN103675431A (en) * 2013-12-03 2014-03-26 浙江华采科技有限公司 Current collecting device on power transmission line
CN104319895A (en) * 2014-11-12 2015-01-28 国家电网公司 Intelligent distributing line monitoring terminal
CN111751656A (en) * 2020-06-05 2020-10-09 水木源华电气有限公司 Voltage and current measurement energy-taking device for power transmission and distribution line

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Application publication date: 20110615