CN205178521U - Three -phase balance high pressure metering device - Google Patents
Three -phase balance high pressure metering device Download PDFInfo
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- CN205178521U CN205178521U CN201520696011.8U CN201520696011U CN205178521U CN 205178521 U CN205178521 U CN 205178521U CN 201520696011 U CN201520696011 U CN 201520696011U CN 205178521 U CN205178521 U CN 205178521U
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- 238000004891 communication Methods 0.000 claims description 39
- 238000012544 monitoring process Methods 0.000 claims description 36
- 230000003321 amplification Effects 0.000 claims description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004870 electrical engineering Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010205 computational analysis Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model discloses a three -phase balance high pressure metering device, including special combined mutual inductor, phase change switch module, taking accuse strapping table case and intelligent monitor terminal, the electric wire netting inlet wire inserts subordinate's user side electric wire netting through the output of special combined mutual inductor, the phase change switch module is installed on each branch line of subordinate's user side electric wire netting for load on the adjustment branch line, intelligence monitor terminal installs and holds at the electric wire netting inlet wire for detect unbalanced three phase, in case intelligent monitor terminal unbalanced three phase appears on detecting the circuit, the load that sends on the control command control phase change switch module adjustment branch line makes the three -phase balanced again. Adopt the technical scheme of the utility model, owing to increase intelligent monitor terminal at the inlet wire end, can in time detect unbalanced three phase to rate according to unbalanced three phase and control phase change switch module adjustment line load, prevent user side electric fire's emergence from the source.
Description
Technical field
The utility model relates to high-voltage meter, particularly relates to a kind of high-voltage meter with three-phase equilibrium function.
Background technology
In prior art, be usually directly connected with three-phase electricity inlet wire for the high-voltage meter measured, once the faults such as electric leakage, short circuit appear in the electrical engineering of rear class user side, high-voltage meter will be caused to break down, even cause electrical fire.Particularly some electrical engineering is because of informal installation, and wire laying mode is chaotic, without lightning protection measures or lightning protection measures defective, various electric product is very different, and distribution box Rig up error, very easily causes electric fault, causes electrical fire.How in real time the electric parameter of effective supervisory user end, the three-phase imbalance in time in adjustment circuit, prevents the generation of electrical fire from source, protection personal safety is the problem that this area will solve.
Therefore, for the above-mentioned defect existed in currently available technology, be necessary to study in fact, to provide a kind of scheme, solve the defect existed in prior art.
Utility model content
In view of this, necessaryly the utility model three-phase equilibrium high-voltage meter that a kind of wiring is simple, have the functions such as three-phase equilibrium, anti-electricity-theft, open circuit is provided, to solve the problem proposed in above-mentioned background technology.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The utility model discloses a kind of three-phase equilibrium high-voltage meter, comprise special combination instrument transformer, phase-change switch module, expense control counter box and intelligent monitoring terminal, electrical network inlet wire exports access subordinate subscriber end electrical network through described special combination instrument transformer;
Described special combination instrument transformer is controlled counter box be connected with described expense, for described expense control counter box provides power supply;
Described expense control counter box is for measuring the electricity of subordinate subscriber end;
Described phase-change switch module is arranged on each branched line of subordinate subscriber end electrical network, for adjusting the load on branched line;
Described intelligent monitoring terminal is arranged on electrical network end of incoming cables, for detecting three-phase imbalance, once described intelligent monitoring terminal detects, and three-phase imbalance appears in circuit, the load that transmission control command controls on described phase-change switch module adjustment branched line makes three-phase rebalancing.
Preferably, described intelligent monitoring terminal comprises residual current transformer, signal amplification module, control module and communication module, described residual current transformer is sleeved on inlet wire input, its induction output is connected with described signal amplification module, described control module is connected with described communication module with described signal amplification module, and described communication module and described phase-change switch module carry out data communication; Described control module detects the induction information of described residual current transformer and sends control command to described phase-change switch module according to this induction information by described communication module.
Preferably, described intelligent monitoring terminal also comprises instrument transformer and connects checkout gear, and when described residual current transformer connects fault, described instrument transformer connects checkout gear and this fault message is sent to described control module.
Preferably, described control module selects atmel corp AT90CAN series monolithic.
Preferably, described expense control counter box is multifunction electric meter, can measure the parameter information of voltage, electric current, power, power factor in electricity and detection line.
Preferably, described intelligent monitoring terminal is also provided with anti-electricity-theft control unit, and described anti-electricity-theft control unit is for monitoring illegal stealing.
Preferably, the inlet wire be connected with described special combination instrument transformer and outlet carry out wiring by armor cable, and adopt cable snap close to fix at described inlet wire and outlet both sides.
Preferably, described special combination instrument transformer comprises current transformer and voltage transformer.
Preferably, described communication module is any one in 485 communication modules, Power Line Carrier Communication Module or wireless communication module.
Preferably, described intelligent monitoring terminal also comprises GPRS communication module, and described GPRS communication module is used for carrying out data communication with remote control center.
Compared with prior art, a kind of the utility model three-phase equilibrium high-voltage meter of the present utility model, owing to increasing intelligent monitoring terminal in end of incoming cables, three-phase imbalance can be detected in time, adjustment phase-change switch makes three-phase circuit come back to three-phase equilibrium state, prevents the generation of user side electrical fire from source.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model three-phase equilibrium high-voltage meter.
Fig. 2 is the theory diagram of intelligent monitoring terminal in the utility model three-phase equilibrium high-voltage meter.
Fig. 3 is the structural representation of the another kind of execution mode of intelligent monitoring terminal in the utility model three-phase equilibrium high-voltage meter.
Embodiment
Below with reference to accompanying drawing, a kind of the utility model three-phase equilibrium high-voltage meter that the utility model provides is described further.
See Fig. 1, be depicted as the structural representation of a kind of three-phase equilibrium high-voltage meter of the utility model, a kind of three-phase equilibrium high-voltage meter, comprise special combination instrument transformer, phase-change switch module, expense control counter box and intelligent monitoring terminal, electrical network inlet wire exports access subordinate subscriber end electrical network through described special combination instrument transformer;
Described special combination instrument transformer is controlled counter box be connected with described expense, for described expense control counter box provides power supply;
Described expense control counter box is for measuring the electricity of subordinate subscriber end;
Described phase-change switch module is arranged on each branched line of subordinate subscriber end electrical network, for adjusting the load on branched line;
Described intelligent monitoring terminal is arranged on electrical network end of incoming cables, for detecting three-phase imbalance, once described intelligent monitoring terminal detects, and three-phase imbalance appears in circuit, the load that transmission control command controls on described phase-change switch module adjustment branched line makes three-phase rebalancing, thus can prevent the generation of client electrical fire from source.
The quantity of above-mentioned phase-change switch module is determined by the situation of actual branch circuit, each branched line is at least installed a phase-change switch module.The operation principle of phase-change switch module is as follows: once intelligent monitoring terminal detects three-phase imbalance in circuit, the unbalance factor of each phase can be gone out according to actual track calculation of parameter, such as A phase circuit power load is overweight, intelligent monitoring terminal sends control command to the phase-change switch module on each branch line of A phase, switch to B phase circuit and C phase circuit, thus make three-phase line rebalancing.
See Fig. 2, be depicted as the theory diagram of intelligent monitoring terminal in the utility model three-phase equilibrium high-voltage meter, described intelligent monitoring terminal comprises residual current transformer, signal amplification module, control module and communication module further, described residual current transformer is sleeved on inlet wire input, its induction output is connected with described signal amplification module, described control module is connected with described communication module with described signal amplification module, and described communication module and described phase-change switch module carry out data communication; Described control module detects the induction information of described residual current transformer and sends control command to described phase-change switch module according to this induction information by described communication module.Specific works principle is: residual current transformer induction end exports faint current sensing signal, the phasor proportion relation of this current signal and three-phase inlet wire, and when three-phase complete equipilibrium, its value is zero.This current signal is after signal amplification module amplifies with certain proportion, control module is sampled this signal value, and then detect the induced signal of residual current transformer, when it exceeds certain threshold value, be judged as three-phase imbalance, and then the unbalance factor of every phase is gone out according to the electrical parameter calculation of each phase circuit, control module sends control command to phase-change switch module according to this information by communication module, thus makes three-phase rebalancing.
The Cleaning Principle of residual current is as follows: in electrical network, if circuit does not occur to get an electric shock and leak current fault, according to electromagnetic induction principle, the phasor of three-phase inlet wire and be zero, magnetic flux phasor and equalling zero, the non-inductive electric current of instrument transformer exports, and line powering is normal.When circuit frees electric shock and leak current fault, the phasor of three-phase inlet wire and by non-vanishing, magnetic flux phasor and also non-vanishing, residual current transformer exports sensor current signal, become stable voltage signal through signal amplification module and peak detection module and export to control module, control module determines current leakage current situation according to the information received, and compare with the threshold value of setting, if current electrical leakage exceedes the threshold range of setting, show that current leakage current is bigger than normal, circuit is in the hole, control module controls circuit breaker driver module output drive signal and cuts off vacuum circuit-breaker, thus reach earth leakage protective object.
In a preferred embodiment, intelligent monitoring terminal also comprises instrument transformer and connects checkout gear, and when residual current transformer connects fault, instrument transformer connects checkout gear and this fault message is sent to control module.
Due to the utility model by special combination instrument transformer for expense control counter box directly provides power supply, and then external power supply or back-up source need not provide power supply for expense control counter box, enormously simplify connections, install and later maintenance more easy.
In a preferred embodiment, the metering ammeter used in expense control counter box is multifunction electric meter, except function of measuring, voltage can also be detected, electric current, power, the electrical quantitys such as power factor, these electrical quantitys can be sent to remote control center by long-distance transcribe terminal, remote control center can monitor out overvoltage through data computational analysis, the accidents such as overcurrent, and then transmit control signal to long-distance transcribe terminal output trip signal to vacuum switch to cut off current supply circuit, thus branch road can have been cut off in time power, avoid feeding through to upper level transformer station, the available protecting safe operation of whole supply line, effectively prevent and be in operation because overvoltage appears in circuit, overcurrent causes the bad of supervising device.
See Fig. 3, be depicted as the structural representation of the another kind of execution mode of intelligent monitoring terminal in the utility model three-phase equilibrium high-voltage meter, be also provided with anti-electricity-theft control unit in intelligent monitoring terminal, described anti-electricity-theft control unit is for monitoring illegal stealing.Comprise the gate inhibition's switch on the chamber door being arranged on the utility model three-phase equilibrium high-voltage meter, anti-electricity-theft control unit has the function of Omnibearing anti-electricity-theft, in conjunction with technique scheme, comprehensive stealing monitoring can be realized, thus stop the generation of electricity filching behavior.
In a preferred embodiment, special combination instrument transformer comprises current transformer and voltage transformer, the inlet wire be connected with described special combination instrument transformer and the outlet be connected with described vacuum circuit-breaker carry out wiring by armor cable, and adopt cable snap close to fix at described inlet wire and outlet both sides.
In a preferred embodiment, control module selects atmel corp AT90CAN series monolithic.AT90CAN series monolithic is 8 high-performance, Low-Power CMOS microprocessor based on AVRRISC structure, and interior band CAN protocol is simple to operate, and Resources on Chip enriches, and pin is sufficient, is applicable to design the various electric fire-control product based on CAN communication.
In a preferred embodiment, because intelligent monitoring terminal and phase-change switch module are not mounted in same casing, therefore, intelligent monitoring terminal and phase-change switch module adopt the mode of bus or wireless mode to be connected.Described communication module is any one in 485 communication modules, Power Line Carrier Communication Module or wireless communication module.
In a preferred embodiment, described intelligent monitoring terminal also comprises GPRS communication module, and described GPRS communication module is used for carrying out data communication with remote control center.Line parameter circuit value information and fault message are sent to remote control center by GPRS communication module by intelligent monitoring terminal, and remote control center sends control command by GPRS network to intelligent monitoring terminal according to these information.
The explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection range of the utility model claim.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a three-phase equilibrium high-voltage meter, is characterized in that, comprises special combination instrument transformer, phase-change switch module, expense control counter box and intelligent monitoring terminal, and electrical network inlet wire exports access subordinate subscriber end electrical network through described special combination instrument transformer;
Described special combination instrument transformer is controlled counter box be connected with described expense, for described expense control counter box provides power supply;
Described expense control counter box is for measuring the electricity of subordinate subscriber end;
Described phase-change switch module is arranged on each branched line of subordinate subscriber end electrical network, for adjusting the load on branched line;
Described intelligent monitoring terminal is arranged on electrical network end of incoming cables, for detecting three-phase imbalance, once described intelligent monitoring terminal detects, and three-phase imbalance appears in circuit, the load that transmission control command controls on described phase-change switch module adjustment branched line makes three-phase rebalancing;
Described intelligent monitoring terminal comprises residual current transformer, signal amplification module, control module and communication module, described residual current transformer is sleeved on inlet wire input, its induction output is connected with described signal amplification module, described control module is connected with described communication module with described signal amplification module, and described communication module and described phase-change switch module carry out data communication; Described control module detects the induction information of described residual current transformer and sends control command to described phase-change switch module according to this induction information by described communication module;
Described intelligent monitoring terminal also comprises instrument transformer and connects checkout gear, and when described residual current transformer connects fault, described instrument transformer connects checkout gear and this fault message is sent to described control module;
Described control module selects atmel corp AT90CAN series monolithic;
Described expense control counter box is multifunction electric meter, can measure the parameter information of voltage, electric current, power, power factor in electricity and detection line.
2. three-phase equilibrium high-voltage meter according to claim 1, is characterized in that, described intelligent monitoring terminal is also provided with anti-electricity-theft control unit, and described anti-electricity-theft control unit is for monitoring illegal stealing.
3. three-phase equilibrium high-voltage meter according to claim 1, is characterized in that, the inlet wire be connected with described special combination instrument transformer and outlet carry out wiring by armor cable, and adopts cable snap close to fix at described inlet wire and outlet both sides.
4. three-phase equilibrium high-voltage meter according to claim 1, is characterized in that, described special combination instrument transformer comprises current transformer and voltage transformer.
5. three-phase equilibrium high-voltage meter according to claim 1, is characterized in that, described communication module is any one in 485 communication modules, Power Line Carrier Communication Module or wireless communication module.
6. three-phase equilibrium high-voltage meter according to claim 1, is characterized in that, described intelligent monitoring terminal also comprises GPRS communication module, and described GPRS communication module is used for carrying out data communication with remote control center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520696011.8U CN205178521U (en) | 2015-09-10 | 2015-09-10 | Three -phase balance high pressure metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520696011.8U CN205178521U (en) | 2015-09-10 | 2015-09-10 | Three -phase balance high pressure metering device |
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| Publication Number | Publication Date |
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| CN205178521U true CN205178521U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520696011.8U Expired - Fee Related CN205178521U (en) | 2015-09-10 | 2015-09-10 | Three -phase balance high pressure metering device |
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| CN (1) | CN205178521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267624A (en) * | 2018-02-23 | 2018-07-10 | 南京飞腾电子科技有限公司 | Electronic electric energy meter |
| CN109188278A (en) * | 2018-09-27 | 2019-01-11 | 中车大连机车车辆有限公司 | Three-phase imbalance detection circuit and system |
-
2015
- 2015-09-10 CN CN201520696011.8U patent/CN205178521U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267624A (en) * | 2018-02-23 | 2018-07-10 | 南京飞腾电子科技有限公司 | Electronic electric energy meter |
| CN109188278A (en) * | 2018-09-27 | 2019-01-11 | 中车大连机车车辆有限公司 | Three-phase imbalance detection circuit and system |
| CN109188278B (en) * | 2018-09-27 | 2021-02-26 | 中车大连机车车辆有限公司 | Three-phase unbalance detection circuit and system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |