CN101788577A - Open-close type B-PLC intelligent electric energy meter - Google Patents

Open-close type B-PLC intelligent electric energy meter Download PDF

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Publication number
CN101788577A
CN101788577A CN201010109460A CN201010109460A CN101788577A CN 101788577 A CN101788577 A CN 101788577A CN 201010109460 A CN201010109460 A CN 201010109460A CN 201010109460 A CN201010109460 A CN 201010109460A CN 101788577 A CN101788577 A CN 101788577A
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electric energy
energy meter
magnetic core
plc
open
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CN201010109460A
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白在铭
徐银子
白皞
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白在铭
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Priority to CN201010109460A priority Critical patent/CN101788577A/en
Publication of CN101788577A publication Critical patent/CN101788577A/en
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Abstract

The invention provides an open-close type B-PLC intelligent electric energy meter capable of meeting the requirements on uninterrupted installation and intelligent management. The open-close type B-PLC intelligent electric energy meter comprises a main body of the electric energy meter and a current transformer, wherein the main body of the electric energy meter comprises a power module, a metering module, a B-PLC module, a display screen and a B-PLC communication line; the current transformer is provided with an open-close clamping groove; the power module and the B-PLC module are both electrically connected with the metering module; the metering module is electrically connected with the display screen; the power module, the metering module and the B-PLC module are all electrically connected with the B-PLC communication line; and the metering module is provided with a sampled signal input interface of the current transformer (CT). The open-close type B-PLC intelligent electric energy meter has the advantages of uninterrupted installation, high integratability, improvement on resource utilization ratio and convenient intelligent management.

Description

Open-close type B-PLC intelligent electric energy meter
Technical field
The present invention relates to a kind of intelligent electric energy meter, be specifically related to a kind of open-close type B-PLC intelligent electric energy meter, can under situation about not having a power failure, install.
Background technology
The whole world has been the intelligent grid epoch, and the intelligent grid core is an intelligent electric energy meter, and intelligent electric energy meter must have the two-forty bi-directional communication function.The communication of electric energy meter has wireless and wired, and wire communication has private communication line (RS485 communication etc.) and power line carrier communication.Power line carrier communication is optimal, utilizes oneself line of electric force communicate by letter not only saving of labor but also material saving.The international ISO of B-PLC (Broadband-Power Line Communication, i.e. broadband power line carrier communication) technology is ripe power-line carrier communication by (on July 31st, 2009 passed through).
In addition, replace traditional electric energy meter and will bring very big trouble and danger for the user, especially current a lot of clients of information age did not allow to have a power failure in absolute one second yet.
Existing electric energy meter can not satisfy the requirement of do not have a power failure installation and intelligent management, in order to satisfy above-mentioned requirements, just needs a kind of novel intelligent electric energy meter of exploitation.
Summary of the invention
The purpose of this invention is to provide the open-close type B-PLC intelligent electric energy meter that a kind of energy satisfies do not have a power failure installation and intelligent management.
This open-close type B-PLC intelligent electric energy meter comprises electric energy meter main body summation current transformer, described electric energy meter main body has power module, metering module, B-PLC module, display screen and B-PLC order wire, described current transformer has the folding draw-in groove, wherein, described power module and described B-PLC module all are electrically connected with described metering module, described metering module is electrically connected with described display screen, described power module, described metering module and described B-PLC module all are electrically connected with described B-PLC order wire, and described metering module has current transformer sampled signal input interface.
Preferably, described current transformer has main magnetic core and secondary magnetic core, and coil is wrapped on the described main magnetic core, but described main magnetic core be connected for folding with described secondary magnetic core, described folding draw-in groove is between main magnetic core and described secondary magnetic core.
Preferably, described current transformer is connected to described current transformer sampling input interface by current transformer sampled signal line.
The connected mode of described main magnetic core and described secondary magnetic core can for, a side of described main magnetic core and described secondary magnetic core is connected by pivot structure, the opposite side of described main magnetic core and described secondary magnetic core has corresponding buckle structure.
Preferably, the cross-sectional area at the position of the winding around of described main magnetic core is less than the cross-sectional area of the main magnetic core of opening and closing place.More preferably, the cross-sectional area at the position of the winding around of described main magnetic core be the opening and closing place main magnetic core cross-sectional area 1/2~3/4.
Described main magnetic core can also be connected for detachable with described secondary magnetic core, and described main magnetic core and described secondary magnetic core have corresponding buckle structure.
Described electric energy meter main body and described current transformer can be split type setting or integral type setting.
Preferably, this open-close type B-PLC intelligent electric energy meter also has mounting guide rail, and described electric energy meter main body is installed on the described mounting guide rail.
The open-close type B-PLC intelligent electric energy meter of the present invention installation that can not have a power failure, easy to use, and utilized the B-PLC technology, the integration height has improved the level of resources utilization, is convenient to intelligent management.
Description of drawings
Fig. 1 is the structural representation of an embodiment of open-close type B-PLC intelligent electric energy meter of the present invention;
Fig. 2 is the circuit diagram of the electric energy meter main body of open-close type B-PLC intelligent electric energy meter of the present invention;
Fig. 3 is the structural representation of the current transformer of open-close type B-PLC electric energy meter shown in Figure 1;
Fig. 4 is provided with synoptic diagram for the inside of the current transformer of open-close type B-PLC intelligent electric energy meter of the present invention;
Fig. 5 is the structural representation of another embodiment of open-close type B-PLC intelligent electric energy meter of the present invention;
Fig. 6 is the structural representation of the current transformer of open-close type B-PLC intelligent electric energy meter shown in Figure 5.
Reference numeral refers to as follows among the figure:
1-electric energy meter main body; The 2-current transformer; The 3-power module; The 4-metering module; The 5-B-PLC module; The 6-display screen; The 7-B-PLC order wire; The 8-main magnetic core; The secondary magnetic core of 9-; The 10-coil; The 11-pivot structure; 12-current transformer sampled signal input interface; 13-line of electric force live wire; 14-current transformer sampled signal line; The 15-mounting guide rail; 16-folding draw-in groove.
Embodiment
Below open-close type B-PLC intelligent electric energy meter of the present invention is further specified.
Broadband power line carrier communication (B-PLC) electric energy meter of open-close type B-PLC intelligent electric energy meter of the present invention for not having a power failure and also can replacing, the connected mode of line of electric force and electric energy meter is that oncontacting is revealed, the live wire of line of electric force directly runs through current transformer (CT).This current transformer is an open-close type current transformer, when being installed, opens by electric energy meter CT, the line of electric force live wire is placed on the folding draw-in groove place of CT, then second half CT (secondary magnetic core) is buckled, the live wire of line of electric force and electric energy meter directly pass CT without any the contact like this, the contactless intelligent electric energy meter is buckled on the prior mounted track then, and electric energy meter installs substantially like this.
One mentions the open-close type mutual inductor remembers tong-type ammeter (or common folding mutual inductor), and tong-type ammeter all has several electric current gears, and each electric current gear can only be measured very narrow range of current, and precision is relatively poor.If because tong-type ammeter when not having gear whole range of current internal linear difference get very, so the CT that has the tong-type ammeter of several gears to replace electric energy meter to read the sample rate current signal is impossible fully.
The CT that the open-close type electric energy meter is used preferably satisfies following condition:
First; Open-close type CT structure opens and closes the main magnetic core and the secondary magnetic core contact area that also change CT several times hardly through finishing.
Second; The magnetic core material of CT is the high permeability magnetic core.
The 3rd; The magnetic core cross-sectional area at the winding around position of open-close type magnetic core is less than the cross-sectional area of opening and closing place, the magnetic core cross-sectional area at the winding around position of open-close type magnetic core be preferably the opening and closing place cross-sectional area 2/3rds, like this, if just in case when main magnetic core and secondary magnetic core folding two magnetic core end faces also the leakage field phenomenon can not appear over against (having any to stagger).
The CT of open-close type electric energy meter satisfies above 3 conditions, opens and closes the ratio and the angular difference that also change CT several times hardly, and the precision of CT and linear poor unlike common mutual inductor.
The used magnetic core of the CT of open-close type electric energy meter with reach magnetoconductivity more than 10000~15000, frequency range 50Hz~5MHz is good, the CT that this open-close type magnetic core is done can reach range of current 0.1A~120A, and making electric energy meter reach precision is 0.5% with interior high precision.
(especially under the situation of the following little electric current of 1A) can also come compensated linear by electric energy meter software during use, improves electrical energy meter accuracy, depends the deficiency that CT improves electrical energy meter accuracy alone to remedy.
The B-PLC modular device is in electric energy meter, two signal of communication lines of electric energy meter are external to from the B-PLC module to electric energy meter on the tested live wire and zero line, (these two B-PLC do not have polarity), the B-PLC signal of electric energy meter can be along line of electric force to the PC center like this.
The B-PLC order wire links up electric energy meter and line of electric force (live wire and zero line), can utilize the B-PL order wire accurately to read the sampled voltage signal.Communication is twocouese high frequency (4MHz~24MHz) two-forty (more than the 8Mpbs) communication between B-PLC module in the electric energy meter and the line of electric force, so the B-PLC order wire is with the line of electric force desirable voltage sampling signal (50Hz) that connects together, and power for the power module of electric energy meter by the B-PLC order wire.
B-PLC module carrier frequency is 4MHz~24MHz, the twocouese traffic rate can be not less than 8Mpbs between intelligent centre and the electric energy meter, so all information at every moment exchange between electric energy meter and the intelligent center, such high-speed communication can be satisfied intelligentized electric energy modernization.
The B-PLC order wire plays three kinds of effects, and the one, with the B-PLC module communication, the 2nd, to the power supply of the power module of electric energy meter, the 3rd, for the metering module of electric energy meter provides voltage sampling signal.Do not have the contact between line of electric force and the electric energy meter, electric energy meter has the B-PLC communication function, finishes by two B-PLC order wires of drawing in the electric energy meter.
Measure with voltage signal (contactless voltage probe) though utilize other method to sample, utilizing the B-PLC order wire to adopt metering in passing is killing three birds with one stone with voltage signal, so better effects if.
Though the B-PLC order wire plays three kinds of effects, the electric current that passes through is only in the 5mA, and three act on mutually noninterferes.
Two B-PLC order wires of drawing from electric energy meter have splicing ear, and this terminal is got final product with compressing on live wire (homophase) in the table case and the zero terminal.
This electric energy meter is installed not only convenient but also save time: need not cut off electric wire and the peeling tining during installation, need not punch and the turn of the screw, as long as be pressed in track after live wire is buckled in open-close type CT, save for 5/6 time.Electric power installer wage is the most expensive, and this mounting means will bring huge economic benefit to engineering.
Realize the installation electric energy meter that do not have a power failure, brought immeasurable economic benefit.
Save line of electric force and the order wire and the pipe arrangement of communicating by letter, save construction cost again: compare single-phase electric energy meter with common electric energy meter and save the 1Kg copper cash; Three-phase electric energy meter is saved the 3Kg copper cash, produces each kilogram copper bar and puts 3 kilograms of carbon dioxide.The nonferrous metal resource epoch in short supply have reduced copper consumption, have reduced CO2 emissions.
Save: single-phase, three-phase electric energy meter power consumption is no more than 1W, is 1/2~1/5 of common electric energy meter.
Traffic rate fast and reliable ground transmits information: all load the B-PLC module in all electric energy meters, also load the B-PLC module on the concentrator of intelligent center, total system is not less than the communication at every moment at a high speed of 8Mpbs speed, if the B-PLC concentrator connects netting twine, also can surf the Net.
Volume is little in light weight: volume 80mm * 78mm * 65mm, common with 1/4 of capacity electric energy meter volume, weight 300g~350g, common with 1/5 of capacity electric energy meter weight, install common with capacity electric energy meter ammeter casing long-pending 1/3.
Cost is low: the electric energy meter volume is little, and plastic casing weight is no more than 110g, does not have expensive connection terminal, and is easy for installation quick again, and electric energy meter table casing is long-pending little, for common with 1/3. of capacity electric energy meter cost
The open-close type B-PLC electric energy meter that also can replace that do not have a power failure can be integral type or split type.Integral type is that electric energy meter main body (all pcb boards) and CT are in same shell; Split type is that electric energy meter main body (all pcb boards) and CT be not in same shell.Electric energy meter main body and CT respectively have the shell of oneself to link up with CT line (current transformer sampled signal line).It is convenient that integral type mainly is contained in the ammeter box, and the split type line of electric force surrounding space that mainly is contained in is little.
The present invention is further specified by embodiment below in conjunction with accompanying drawing.
The intelligent electric energy meter that embodiment 1 is split type
Shown in Fig. 1~3, this open-close type B-PLC intelligent electric energy meter, comprise electric energy meter main body 1 summation current transformer 2, described electric energy meter main body has power module 3, metering module 4, B-PLC module 5, display screen 6 and B-PLC order wire 7, described current transformer has the folding draw-in groove 16 that can engage line of electric force live wire 13, wherein, described power module 3 and described B-PLC module 5 all are electrically connected with described metering module 4, described metering module 4 is electrically connected with described display screen 6, described power module 3, described metering module 4 and described B-PLC module 5 all are electrically connected with described B-PLC order wire 7, and described metering module 4 has current transformer sampled signal input interface 12.Described current transformer 2 is connected to described current transformer sampled signal input interface 12 by current transformer sampled signal line 14.This open-close type B-PLC intelligent electric energy meter also has mounting guide rail 15, and described electric energy meter main body 1 is installed on the described mounting guide rail 15.
Shown in Fig. 3 and 4, described current transformer 2 has main magnetic core 8 and secondary magnetic core 9, and coil 10 is wrapped on the described main magnetic core 8, but described main magnetic core 8 and described secondary magnetic core 9 be connected for folding, described folding draw-in groove 16 is between main magnetic core 8 and described secondary magnetic core 9.One side of described main magnetic core 8 and described secondary magnetic core 9 is connected by pivot structure 11, and the opposite side of described main magnetic core 8 and described secondary magnetic core 9 has corresponding buckle structure.As shown in Figure 4, the magnetic core cross-sectional area A-A at the position of the winding around 10 of described main magnetic core 8 be about the opening and closing place main magnetic core 8 cross-sectional area B-B 2/3rds.
The intelligent electric energy meter of embodiment 2 integral types
As illustrated in Figures 5 and 6, as different from Example 1, electric energy meter main body 1 summation current transformer 2 is an integral type, and described main magnetic core 8 is detachable the connection with described secondary magnetic core 9, and described main magnetic core 8 and described secondary magnetic core 9 have corresponding buckle structure.

Claims (10)

1. open-close type B-PLC intelligent electric energy meter, it is characterized in that, this open-close type B-PLC intelligent electric energy meter comprises electric energy meter main body (1) summation current transformer (2), described electric energy meter main body has power module (3), metering module (4), B-PLC module (5), display screen (6) and B-PLC order wire (7), described current transformer has folding draw-in groove (16), wherein, described power module (3) and described B-PLC module (5) all are electrically connected with described metering module (4), described metering module (4) is electrically connected with described display screen (6), described power module (3), described metering module (4) and described B-PLC module (5) all are electrically connected with described B-PLC order wire (7), and described metering module (4) has current transformer sampled signal input interface (12).
2. open-close type B-PLC intelligent electric energy meter according to claim 1, it is characterized in that, described current transformer (2) has main magnetic core (8) and secondary magnetic core (9), coil (10) is wrapped on the described main magnetic core (8), described main magnetic core (8) with described secondary magnetic core (9) but be connected for folding, described folding draw-in groove (16) is positioned between main magnetic core (8) and the described secondary magnetic core (9).
3. open-close type B-PLC intelligent electric energy meter according to claim 1 is characterized in that, described current transformer (2) is connected to described current transformer sampled signal input interface (12) by current transformer sampled signal line (14).
4. open-close type B-PLC intelligent electric energy meter according to claim 2, it is characterized in that, one side of described main magnetic core (8) and described secondary magnetic core (9) is connected by pivot structure (11), and the opposite side of described main magnetic core (8) and described secondary magnetic core (9) has corresponding buckle structure.
5. open-close type B-PLC intelligent electric energy meter according to claim 2 is characterized in that, described main magnetic core (8) is detachable the connection with described secondary magnetic core (9), and described main magnetic core (8) and described secondary magnetic core (9) have corresponding buckle structure.
6. open-close type B-PLC intelligent electric energy meter according to claim 2 is characterized in that, the cross-sectional area at the position of the winding around (10) of described main magnetic core (8) is less than the cross-sectional area of the main magnetic core (8) of opening and closing place.
7. open-close type B-PLC intelligent electric energy meter according to claim 2 is characterized in that, the cross-sectional area at the position of the winding around (10) of described main magnetic core (8) be the opening and closing place main magnetic core (8) cross-sectional area 1/2~3/4.
8. according to each described open-close type B-PLC intelligent electric energy meter of claim 1~7, it is characterized in that described electric energy meter main body (1) and described current transformer (2) are split type setting.
9. according to each described open-close type B-PLC intelligent electric energy meter of claim 1~7, it is characterized in that described electric energy meter main body (1) and described current transformer (2) are the integral type setting.
10. according to each described open-close type B-PLC intelligent electric energy meter of claim 1~7, it is characterized in that this open-close type B-PLC intelligent electric energy meter also has mounting guide rail (15), described electric energy meter main body (1) is installed on the described mounting guide rail (15).
CN201010109460A 2010-02-08 2010-02-08 Open-close type B-PLC intelligent electric energy meter Pending CN101788577A (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN102183689A (en) * 2011-03-15 2011-09-14 武汉盛帆电子股份有限公司 Single-phase guide-rail-type carrier electric energy meter
CN103344839A (en) * 2013-07-01 2013-10-09 江苏大学 Wireless detection method and device for contact resistance of busbar joint
CN103809018A (en) * 2012-11-14 2014-05-21 上海华冠电子设备有限责任公司 Electric energy metering device and method
CN104730331A (en) * 2015-01-27 2015-06-24 华为技术有限公司 Power and electric energy sensor and communication cabinet
CN104977443A (en) * 2015-06-15 2015-10-14 苏州市新瑞奇节电科技有限公司 Smart electric meter with external transformer

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN102183689A (en) * 2011-03-15 2011-09-14 武汉盛帆电子股份有限公司 Single-phase guide-rail-type carrier electric energy meter
CN103809018A (en) * 2012-11-14 2014-05-21 上海华冠电子设备有限责任公司 Electric energy metering device and method
CN103344839A (en) * 2013-07-01 2013-10-09 江苏大学 Wireless detection method and device for contact resistance of busbar joint
CN103344839B (en) * 2013-07-01 2015-08-05 江苏大学 A kind of busbar joint contact resistance method for wirelessly testing and device
CN104730331A (en) * 2015-01-27 2015-06-24 华为技术有限公司 Power and electric energy sensor and communication cabinet
CN104977443A (en) * 2015-06-15 2015-10-14 苏州市新瑞奇节电科技有限公司 Smart electric meter with external transformer

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Application publication date: 20100728