CN102081133A - Intelligent transformer and equipment for detecting high voltage line - Google Patents
Intelligent transformer and equipment for detecting high voltage line Download PDFInfo
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- CN102081133A CN102081133A CN 201010577868 CN201010577868A CN102081133A CN 102081133 A CN102081133 A CN 102081133A CN 201010577868 CN201010577868 CN 201010577868 CN 201010577868 A CN201010577868 A CN 201010577868A CN 102081133 A CN102081133 A CN 102081133A
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Abstract
The invention belongs to the field of detection of electric power systems and particularly relates to an intelligent transformer and equipment for detecting a high voltage line. The intelligent transformer comprises a global positioning system (GPS) timing positioning module, a current transformer sampling module, a power supply management module, a signal shaping module, an embedded processing module, and a radio frequency communication module, wherein the GPS timing positioning module is used for performing uniform timing positioning; the current transformer sampling module converts large current signals in the high voltage line into small current signals and outputs the small current signals; the power supply management module is used for processing the received small current signals and then is used as a power supply; the signal shaping module is used for precisely rectifying the received small current signals and outputs the rectified small current signals; the embedded processing module is used for judging and analyzing the received small current signals to form digital signals and outputs the digital signals; and the radio frequency communication module is used for realizing communication between different embedded processing modules. The intelligent transformer can be flexibly arranged on a power line in a split way, fully meets the requirements that the intelligent transformer is arranged on the high voltage and field overhead lines and also has the characteristics that real-time monitoring can be performed, judgment is correct and the intelligent transformer is safe and reliable.
Description
Technical field
The invention belongs to the electric system detection range, relate in particular to a kind of intelligent mutual inductor and high-tension line checkout equipment that high-tension line detects that be used for.
Background technology
Since reform and opening-up in 1978, the Chinese national economy fast development, the science and technology progress of constantly bringing forth new ideas, living standards of the people constantly are improved, and electric power is as one of the infrastructure of socio-economic development and government utility, and its demand is also in quick growth.China's power grid construction is progressively strengthened for this reason, and the urban and rural power grids construction and upgrading obtain effect, has ensured the national economic development and the social progress solid demand to electricity consumption.Yet power failure is also in the middle of constantly emerging in large numbers and solving when ensureing national need for electricity.
Power transmission and distribution are as two important steps of operation of power networks; in whole operation of power networks process, play an important role; in case in this process, break down; to bring immeasurable loss to electrical network, national economy and people's lives; this China has also been strengthened monitoring dynamics to these two links, and the most frequently used monitoring means is to come jointly electric line carried out that ground connection and electric leakage etc. detect and protection with zero-sequence transformer and other protection equipment.
Yet traditional zero-sequence transformer commonly used mainly is to pass three-phase circuit in the middle of the zero-sequence transformer simultaneously or gather after the tap above the floor that is installed in switch cubicle, do the installed seat of not only having limited zero-sequence transformer greatly like this, and installation process complexity, the item that should be noted that is a lot, is easy to stay the hidden danger that causes the accident or directly power circuit is caused damage to later circuit.In addition because traditional zero-sequence transformer is to judge and action by machinery fully; it is aging or reflect accidents such as insensitive to be easy to generating means; cause zero sequence protection device tripping when earth fault, protection is bypassed the immediate leadership etc., has caused immeasurable threat for whole electrical network.And most importantly traditional zero-sequence transformer needs three-line (three-phase working line) or two circuits (single-phase working line) to pass the magnetic flux stack that same iron core could be realized the iron core internal induction simultaneously.Because the existence of high-tension line Insulation Problems and open-air construction of line mode (line pitch is excessive) problem makes this multi-thread punching mode can't realize at all.
Summary of the invention
The present invention provides a kind of intelligent mutual inductor that high-tension line detects that is used for for solving the technical matters that exists in the known technology, is intended to solve traditional zero-sequence transformer and the Insulation Problems that exists and open-air overhead transmission line spacing are installed on high-tension line excessively can't install and install that the seat is fixed, the installation process complexity is loaded down with trivial details, judge insensitive, the aging problem that reaches the birth defect that is broken down by high-voltage easily etc. easily by mechanical braking fully.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology is:
A kind of intelligent mutual inductor that is used for the high-tension line detection, described intelligent mutual inductor comprises:
The current transformer sampling module is used to utilize electromagnetic induction principle, and the big current signal in the high-tension line is become the little current signal line output of going forward side by side;
Power management module, the little current signal that is used to receive described current transformer sampling module output is handled the back provides described intelligent mutual inductor needs as power supply electric current;
The signal shaping module is used for little current signal to the described current transformer sampling module output that receives and carries out the precision rectifying line output of going forward side by side, and can adopt this two chip of AD8277 or 2NA2132(can direct substitution) realize its function;
The embedded processing module is used for the little current signal of the described signal shaping module output that receives is judged, analyzed and forms the digital signal line output of going forward side by side;
GPS time service locating module is used for the described embedded processing module of installing on each phase line of electric force is unified accurate time service and accurate location;
The radio-frequency communication module is used to receive the digital signal of described embedded processing module output and described digital signal is exported the communication that realizes between the different described embedded processing modules.
Another object of the present invention also is to provide a kind of above-mentioned intelligent mutual inductor high-tension line checkout equipment that comprises.
The present invention is by adopting structures such as GPS time service locating module, embedded processing module, unify time service can for each equipment of going up mutually, power circuit is monitored and calculate by advanced accurate detection technique, guaranteed that so promptly each phase equipment can detect each phase current at synchronization accurately, improved accuracy and the reliability measured again greatly.Independently the intelligent decision ability has overcome the big disadvantage of traditional mechanical action error rate simultaneously.In addition, the installing space that can enlarge zero-sequence transformer is greatly installed on discrete ground.
Description of drawings
Fig. 1 is the structured flowchart that is used to adapt to the energy taking device that electric current on a large scale changes that the embodiment of the invention provides;
Fig. 2 is the circuit diagram that is used to adapt to the energy taking device that electric current on a large scale changes that the embodiment of the invention provides;
Fig. 3 is the circuit diagram of the power management module that provides of the embodiment of the invention;
Fig. 4 is the structural drawing 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.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify the following example of executing now, and conjunction with figs. is described in detail as follows:
Fig. 1 shows that the embodiment of the invention provides is used to adapt to the circuit diagram of the energy taking device that electric current on a large scale changes, and for convenience of explanation, only shows part related to the present invention.
This intelligence mutual inductor comprises:
GPS time service locating module 11 is used for the described embedded processing module of installing on each phase line of electric force is unified accurate time service and accurate location;
Current transformer sampling module 12 is used to utilize electromagnetic induction principle, and the big current signal in the high-tension line is become the little current signal line output of going forward side by side;
Embedded processing module 15 is used for the little current signal of signal shaping module 14 outputs that receive is judged, analyzed and forms the digital signal line output of going forward side by side;
Radio-frequency communication module 16 is used to receive the digital signal of embedded processing module 15 outputs and digital signal is exported the communication that realizes between the different embedded processing modules 15.
As a preferred version of the embodiment of the invention, the intelligent mutual inductor of a cover all is installed on every power circuit, all intelligent mutual inductors are by a GPS time service locating module 11 unified time service and location.
As a preferred version of the embodiment of the invention, intelligent mutual inductor also comprises:
As a preferred version of the embodiment of the invention, carry out communication between the different radio-frequency communication modules 16 mutually, form a local microgrid.
GPS time service locating module 11 of the present invention is mainly by following two functions: 1, unify time service, promptly be equipped with on the three-phase circuit of the present invention, have only wherein one described GPS time service locating module 11 to be arranged on mutually, by carrying out communication with satellite, acquisition time, temporal information is passed to the embedded processing module, radio-frequency communication module 16 time services on 16 pairs of other two-phases of embedded processing module 15 notice radio-frequency communication modules, because above-mentioned described process is consuming time to be ns(nanosecond) level, meet relevant international standard, guaranteed the basic unitarity of time service on the three-phase.2, the location promptly by with satellite communication installation site of the present invention accurately being located, passes to embedded processing module 15 with information, when line related breaks down, sends localization of fault information by embedded processing module 15 to the related personnel.
The present invention can adopt partial installation on each bar phase line, GPS time service locating module 11 will carry out information communication with satellite, unify time service to our invention on each phase line via satellite, to guarantee that the data of gathering each time all are accurate synchronizations on three-phase.After time service finished, the current transformer sampling module 12 on the three-phase began the electric current on the circuit of place is sampled, and the electric current part that sampling obtains provides power supply by 13 pairs of whole devices of power management module; Each device of going up mutually of another part is sampled to the current signal on the circuit of place, current signal is transferred to 14 pairs of current signal waveform of signal shaping module and is put in order, analyze, judge and handle by embedded processing module 15 at last, equipment on the three-phase passes through radio circuit separately then, carry out communication mutually, form a local microgrid, wherein the device on the two-phase is gone up the current data that detection obtains mutually by other one of radio-frequency communication module 16 transmissions, carries out vector and calculating by the electric current on 15 pairs of three-phases of the other one embedded processing module that goes up mutually.If result of calculation is zero, judge that then circuit does not break down, then repeat said process; Otherwise line failure, embedded processing module 15 can be notified GSM communication module 17, sends warning message and patrols and examines personnel to relevant, finishes accident alarming.
The present invention has not only solved the insurmountable problem of traditional zero-sequence transformer, reaches the purpose that traditional zero-sequence transformer is monitored power circuit, and makes it more accurately reliable, can also independently realize fault alarm simultaneously.By intelligent mutual inductor provided by the invention is installed, can enlarge the installing space of zero-sequence transformer greatly on corresponding power circuit.We are by advanced Power Electronic Technique and data communication technology in addition, unify time service for each equipment of going up mutually by GPS time service locating module 11, power circuit is monitored and calculate by advanced accurate detection technique, guaranteed that so promptly each phase equipment can detect each phase current at synchronization accurately, improve accuracy and the reliability measured again greatly, can also independently finish the work that faulty line is reported to the police.And intelligent mutual inductor provided by the invention has the shell of independent intellecture property, can be good at protecting intelligent mutual inductor, thereby has improved serviceable life greatly.Has independently intelligent decision simultaneously, overcome the big disadvantage of traditional mechanical action error rate, also has good compatibility, can carry out coordinated with other equipment on the electrical network, common complete intelligent feed and the monitoring system of a cover of forming improved security, economy and the reliability of operation of power networks greatly.
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 (8)
1. one kind is used for the intelligent mutual inductor that high-tension line detects, and it is characterized in that described intelligent mutual inductor comprises:
The current transformer sampling module is used to utilize electromagnetic induction principle, and the big current signal in the high-tension line is become the little current signal line output of going forward side by side;
Power management module, the little current signal that is used to receive described current transformer sampling module output is handled the back provides described intelligent mutual inductor needs as power supply electric current;
The signal shaping module is used for little current signal to the described current transformer sampling module output that receives and carries out the precision rectifying line output of going forward side by side, and can adopt this two chip of AD8277 or 2NA2132(can direct substitution) realize its function;
The embedded processing module is used for the little current signal of the described signal shaping module output that receives is judged, analyzed and forms the digital signal line output of going forward side by side;
GPS time service locating module is used for the described embedded processing module of installing on each phase line of electric force is unified accurate time service and accurate location;
The radio-frequency communication module is used to receive the digital signal of described embedded processing module output and described digital signal is exported the communication that realizes between the different described embedded processing modules.
2. intelligent mutual inductor as claimed in claim 1 is characterized in that, the described intelligent mutual inductor of a cover all is installed on every power circuit, and all described intelligent mutual inductors are unified time service and location by a described GPS time service locating module.
3. intelligent mutual inductor as claimed in claim 1 is characterized in that, described intelligent mutual inductor also comprises:
The GSM communication module is used for when power circuit breaks down, and sends alerting signal, and the maintainer is reported to the police.
4. intelligent mutual inductor as claimed in claim 1 is characterized in that, carries out communication mutually between the different described radio-frequency communication modules, forms a local microgrid.
5. high-tension line checkout equipment, described checkout equipment is equipped with intelligent mutual inductor, it is characterized in that, and described intelligent mutual inductor comprises:
The current transformer sampling module is used to utilize electromagnetic induction principle, and the big current signal in the high-tension line is become the little current signal line output of going forward side by side;
Power management module, the little current signal that is used to receive described current transformer sampling module output is handled the back provides described intelligent mutual inductor needs as power supply electric current;
The signal shaping module is used for little current signal to the described current transformer sampling module output that receives and carries out the precision rectifying line output of going forward side by side, and can adopt this two chip of AD8277 or 2NA2132(can direct substitution) realize its function;
The embedded processing module is used for the little current signal of the described signal shaping module output that receives is judged, analyzed and forms the digital signal line output of going forward side by side;
GPS time service locating module is used for the described embedded processing module of installing on each phase line of electric force is unified accurate time service and accurate location;
The radio-frequency communication module is used to receive the digital signal of described embedded processing module output and described digital signal is exported the communication that realizes between the different described embedded processing modules.
6. checkout equipment as claimed in claim 5 is characterized in that, the described intelligent mutual inductor of a cover all is installed on every power circuit, and all described intelligent mutual inductors are unified time service and location by a described GPS time service locating module.
7. checkout equipment as claimed in claim 5 is characterized in that, described intelligent mutual inductor also comprises:
The GSM communication module is used for when power circuit breaks down, and sends alerting signal, and the maintainer is reported to the police.
8. checkout equipment as claimed in claim 5 is characterized in that, carries out communication mutually between the different described radio-frequency communication modules, forms a local microgrid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010577868 CN102081133A (en) | 2010-12-08 | 2010-12-08 | Intelligent transformer and equipment for detecting high voltage line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010577868 CN102081133A (en) | 2010-12-08 | 2010-12-08 | Intelligent transformer and equipment for detecting high voltage line |
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| CN 201010577868 Pending CN102081133A (en) | 2010-12-08 | 2010-12-08 | Intelligent transformer and equipment for detecting high voltage line |
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| CN102508005A (en) * | 2011-11-17 | 2012-06-20 | 北京四方继保自动化股份有限公司 | Safe wireless transmission current measuring device |
| CN103001325A (en) * | 2012-09-29 | 2013-03-27 | 北京康力昆泰电力技术有限公司 | Intelligent network distribution system based on Beidou satellite communication system |
| CN103051063A (en) * | 2012-12-28 | 2013-04-17 | 王兴伟 | Outdoor alternating current high voltage fault remote transmission device |
| CN103293443A (en) * | 2013-05-20 | 2013-09-11 | 国家电网公司 | Overhead wire grounding fault locating method for power distribution network |
| CN103326468A (en) * | 2013-06-07 | 2013-09-25 | 九星通信设备(福州)有限公司 | Electrical equipment long-distance intelligent environmental monitoring warning device |
| CN103558470A (en) * | 2013-11-06 | 2014-02-05 | 张金木 | High-voltage power grid natural disaster detection system |
| CN106383538A (en) * | 2016-08-18 | 2017-02-08 | 曙光节能技术（北京）股份有限公司 | Heavy current generator |
| CN112379303A (en) * | 2020-10-27 | 2021-02-19 | 国网黑龙江省电力有限公司哈尔滨供电公司 | Intelligent sensing system for grounding state of power transmission line |
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| CN112379303A (en) * | 2020-10-27 | 2021-02-19 | 国网黑龙江省电力有限公司哈尔滨供电公司 | Intelligent sensing system for grounding state of power transmission line |
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Application publication date: 20110601 |