CN202443064U - Electrical energy shunt metering device - Google Patents

Electrical energy shunt metering device Download PDF

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Publication number
CN202443064U
CN202443064U CN2012200265812U CN201220026581U CN202443064U CN 202443064 U CN202443064 U CN 202443064U CN 2012200265812 U CN2012200265812 U CN 2012200265812U CN 201220026581 U CN201220026581 U CN 201220026581U CN 202443064 U CN202443064 U CN 202443064U
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electric energy
interface
module
signal
unit
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应绍栋
裘君
段丹
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应绍栋
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Abstract

The utility model discloses an electrical energy shunt metering device which solves the problem that in the prior art, multiple loads are metered one by one so that the occupied space is large. The electrical energy shunt metering device comprises a shunt metering module and an external communication module, wherein, the shunt metering module is installed in a power distribution box (cabinet) or a low-voltage switch cabinet or a power cable distribution box to meter energy consumption of multiple load lines one by one or group by group, and the external communication module is installed at any position within corresponding coverage area of carrier communication of the shunt metering module and provides expansion of communication interfaces located outside a case. The shunt metering module comprises a current mutual inductor, a voltage sampling circuit, a signal conditioning unit, an electrical energy metering unit, a signal isolation unit, a data processing unit, a first communication interface and a first power source module. The external communication module comprises a second communication interface and a second power source module. The electrical energy shunt metering device can provide shunted or classified electrical energy metering, is small in size, simple and convenient to arrange and flexible to use, and can be widely applied to occasions with various electrical energy consumer groups.

Description

A kind of electric energy is WT-MSR along separate routes
Technical field
The utility model belongs to the electric energy metrical technical field, is specifically related to a kind of electric energy WT-MSR along separate routes.
Background technology
The current whole world has formed general common recognition for energy-conserving and environment-protective; But most people for energy-conservation still rest on conceptive; Do not put into practical action; Also thinking clearly not, the field of especially having mixed multiple electric energy consumption colony in the business premises that has a high potential, factory of enterprise and family apartment etc.Trace it to its cause, high except traditional energy conserving system cost, dispose beyond the difficult installation, also have an important reasons, be exactly that the user lacks effective energy consumption evaluation measures.Now, the user can receive electricity bill at set intervals, still; The user can not get any other useful information except being apprised of the total charge that need pay, comprising: every month, actual electric energy consumption distributed; Wherein which energy consumption can be practiced thrift, and particularly to the classification energy consumption statistic of different electric characteristics and social property, this is even more important for having the professional commercial user that subleases; Can not get the answer of these problems; The user does not just know to start with wherefrom and carries out energy-conservationly, even if implemented a certain measure, is difficult to its effect of assessment yet.Therefore, user's electric energy consumption is classified and metering along separate routes becomes the prerequisite of promoting conservation measures.
The prioritization scheme of known most of energy consumption measure concentrates in the improvement to ammeter itself basically; Yet we are behind the path of conscientiously studying the user side power supply; Find to obtain the most easily panel box (cabinet), low-tension switch cabinet or the cable distribution box of the place of classification consumption information the user; Most of user can concentrate at this place and distinguish different loaded lines, if therefore can be at user's panel box (cabinet) just, in low-tension switch cabinet or the cable distribution box one by one or the energy consumption of dividing into groups to gather each bar loaded line can understand the power consumption information of classification.But the problem of reality is that common space, above-described place is narrow and small, and the numerous and quantity of circuit differs; If adopt existing electric power meter that whole circuits are measured one by one; Then need take very big space, the user often needs other installation table case or is replaced with bigger table case, and need change existing line; This has increased difficulty of construction greatly, also directly causes a lot of users to abandon transforming.
In order to address this problem, the utility model provides a kind of electric energy shunt WT-MSR that can be applied in panel box (cabinet), low-tension switch cabinet or the cable distribution box.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, proposes a kind of electric energy WT-MSR along separate routes.
A kind of electric energy WT-MSR along separate routes comprises metering module and external communication module along separate routes, and metering module is installed in panel box (cabinet) or low-tension switch cabinet or the cable distribution box along separate routes, and the electric energy consumption of multichannel loading circuit is carried out one by one or the metering of dividing into groups; External communication module is installed in the optional position in the corresponding coverage of metering module carrier communication along separate routes, provides to be positioned at the outside communication interface expansion of panel box (cabinet) or low-tension switch cabinet or cable distribution box.
Metering module comprises current transformer, voltage sampling circuit, signal condition unit, electric energy metrical unit, Signal Spacing unit, data processing unit, first communication interface and first power module along separate routes; Wherein N road electric energy metrical passage is formed in current transformer, voltage sampling circuit, signal condition unit and electric energy metrical unit, and N is a positive integer, and N >=1, and every road electric energy metrical channel characteristic is consistent, and independent mutually.Described electric energy metrical unit, Signal Spacing unit and data processing unit adopt integrated chip separately or integrate the SOC chip of repertoire;
Current transformer is gathered the ac current signal of loaded line, converts first voltage signal into through resistance and exports to the signal condition unit; Voltage sampling circuit is gathered the ac voltage signal of loaded line, directly converts second voltage signal into and exports to the signal condition unit; The signal condition unit is made up of current channel filtering circuit and voltage channel filtering circuit; First voltage signal that the current channel filtering circuit will collect carries out filter shape; Convert first differential signal into and export to the electric energy metrical unit; Second voltage signal that the voltage channel filtering circuit will collect carries out filter shape, converts second differential signal into and exports to the electric energy metrical unit;
The electric energy metrical unit carries out the multiplicative integral computing to second differential signal of gathering on first differential signal gathered on the current channel and the voltage channel and obtains electric energy measurement data, and electric energy measurement data is exported to the Signal Spacing unit with pulse signal form or digital interface form; The digital circuit part of high-tension artificial circuit part of Signal Spacing cell isolation and low-voltage, electric energy measurement data are exported to data processing unit after through isolated location; Data processing unit comprises single-chip microcomputer and FLASH storage chip; The FLASH chip is connected on the single-chip microcomputer; Data processing unit writes down statistics and necessary calculation process to the data of each passage collection; And,, to the user electric energy measurement data is provided via first communication interface according to unified specification data form according to user's query requests;
First communication interface specifically comprises first output interface and first carrier interface; First output interface links to each other with data processing unit through different UART interfaces with the first carrier interface, and first output interface is the main interface that the user obtains electric energy measurement data, and its electric interfaces form is RS232/RS485 interface or Ethernet interface; The first carrier interface with adopt power line carrier technology and transparent communication protocol between external communication module is communicated by letter.
Described electric energy measurement data is meant active energy aggregate-value, reactive energy aggregate-value, apparent electric energy aggregate-value, active power, reactive power, applied power, power factor, voltage, electric current, frequency all or part of parameter wherein;
First power module is whole shunt metering module power supply;
External communication module mainly comprises second communication interface and second source module, and the second communication interface specifically comprises second output interface and second carrier interface; Second carrier interface links to each other with the first carrier interface of shunt metering module through line of electric force, need not other signal wires and connects; Second output interface of external communication module is that the user inquires about the main interface that obtains data outside panel box, and the electric type of this interface is consistent with first output interface;
The second source module is whole external communication module power supply.
External communication module is the annex as the utility model device; If the user has been equipped with the network service port or has hoped the main control equipment of data acquisition is deployed in the panel box in panel box, then can only using along separate routes, metering module carries out data acquisition.
The utility model beneficial effect is following:
The utility model can be simultaneously carries out shunt or electric energy metrical group by group to multichannel loading, thereby to the user shunt electric energy metrical information of dividing according to the electric energy consumption colony with similar electric characteristic or social economy's attribute (classify or sublease) is provided;
The device volume that the utility model relates to is small and exquisite, and in can pack into panel box (cabinet), low-tension switch cabinet or the cable distribution box, this is that conventional apparatus is difficult to accomplish;
The device that the utility model relates to adopts the current transformer of hypermutation ratio, and is safe and reliable, can measure loaded line neatly, makes construction and installation very convenient;
The data acquisition interface that the external communication module that the utility model relates to provides users with the convenient can not need just can collect electric energy continuous data along separate routes from panel box (cabinet), low-tension switch cabinet or cable distribution box internal lead outside case.
The utility model can provide the effective energy-saving thinking to the user; The guiding user carries out conservation measures targetedly; And provide real-time feedback with the assessment energy-saving effect; Can be widely used in business premises, factory of enterprise and family apartment etc. and have the occasion of multiple electric energy consumption colony, have good market outlook.
Description of drawings
Accompanying drawing 1 is the system principle diagram of the utility model;
Accompanying drawing 2 is that synoptic diagram is disposed in the installation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The utility model comprises metering module and external communication module along separate routes, and metering module is installed in panel box (cabinet) or low-tension switch cabinet along separate routes, or the cable distribution box the inside, is not with Presentation Function, is responsible for gathering and transmits electric energy measurement data along separate routes; External communication module is installed in the optional position in the corresponding shunt metering module carrier communication coverage, is responsible for transmitting, stores or shows electric energy measurement data along separate routes.
Metering module comprises current transformer, voltage sampling circuit, signal condition unit, electric energy metrical unit, Signal Spacing unit, data processing unit, first communication interface and first power module along separate routes; Wherein N road electric energy metrical passage is formed in current transformer, voltage sampling circuit, signal condition unit and electric energy metrical unit, and N is a positive integer, and N >=1, and every road electric energy metrical channel characteristic is consistent, and independent mutually.Described electric energy metrical unit, Signal Spacing unit and data processing unit adopt integrated chip separately or integrate the SOC chip of repertoire;
As shown in Figure 1; With the pairing passage of 1# loaded line is example; Used current transformer is the current transformer of hypermutation ratio; Current transformer CT (Current transformer) gathers the ac current signal of 1# load, converts first voltage signal into through resistance and exports to 1# current signal filtering circuit; Voltage sampling circuit by resistance series connection dividing potential drop is formed is gathered 1# load alternating current pressure signal, directly converts second voltage signal into and exports to 1# voltage signal filtering circuit; The signal condition unit comprises voltage channel filtering circuit and current channel filtering circuit; The current channel filtering circuit carries out filter shape to first voltage signal on the current channel; Convert first differential signal into and export to 1# electric energy metrical unit; The voltage channel filtering circuit carries out filter shape to second voltage signal on the voltage channel, converts second differential signal into and exports to 1# electric energy metrical unit;
1# electric energy metrical unit carries out the multiplicative integral computing to second differential signal of gathering on first differential signal gathered on the current channel and the voltage channel and obtains electric energy measurement data, and electric energy measurement data is exported to the Signal Spacing unit with the pulse signal form; The digital circuit part of isolated high-tension artificial circuit part in Signal Spacing unit and low-voltage, electric energy measurement data are exported to data processing unit after through isolated location;
Data processing unit comprises single-chip microcomputer and FLASH storage chip, and the FLASH chip is connected on the single-chip microcomputer, is used for storing necessary electric energy measurement data, to guarantee just in case during the device outage, data can not lost; Data processing unit writes down statistics and necessary calculation process to the data of each passage collection, and according to user's query requests, according to unified specification data form, to the user electric energy measurement data is provided via first communication interface;
First communication interface specifically comprises first output interface and first carrier interface; First output interface links to each other with data processing unit through different UART interfaces with the first carrier interface, and first output interface is the main interface that the user obtains electric energy measurement data, and its electric interfaces form is RS232/RS485 interface or Ethernet interface; The first carrier interface is communicated by letter with the external communication module of the utility model, adopts power line carrier technology and transparent communication protocol.
First power module is whole shunt metering module power supply;
It is the high precision electric energy computation chip of ADE7757A that described electric energy metrical unit adopts model, and this chip carries out multiplicative integral to the differential signal on the electric current and voltage passage and calculates the acquisition power consumption values, exports to next stage Signal Spacing unit with the pulse signal form;
It is the digital isolating chip of ADUM1410 that described Signal Spacing unit adopts model.
It is the ARM single-chip microcomputer of LM3S608 that described single-chip microcomputer adopts model.
It is the RS485 communication chip of SP3485 that described first output interface adopts the model of SIPEX company.
Described first carrier interface adopts is that SM2200 with SEMITECH company is the carrier module of core.
The actual number of the N road electric energy metrical passage of being made up of current transformer, voltage sampling circuit, signal condition unit and electric energy metrical unit in the metering module along separate routes can customize according to demand, is generally 8 to 24 the tunnel.
External communication module mainly comprises second communication interface and second source module, and the second communication interface specifically comprises second output interface and second carrier interface; Second carrier interface links to each other with the first carrier interface of shunt metering module through line of electric force, need not other signal wires and connects; Second output interface of external communication module is that the user inquires about the main interface that obtains data outside panel box, and the electric type of this interface is consistent with first output interface;
Adopt complete transparent communication protocol along separate routes between metering module and the external communication module to the user; Promptly when the second output interface data query of user through external communication module, communication protocol that it adopts and working method are equal to the user fully through the first output interface data query of metering module along separate routes;
The second source module is whole external communication module power supply.
External communication module is the annex as the utility model device; If the user has been equipped with the network service port or has hoped the main control equipment of data acquisition is deployed in the panel box in panel box, then can only using along separate routes, metering module carries out data acquisition.
Shown in Fig. 2, the utility model is equipped with 1# loaded line 1,2# loaded line 2,8# loaded line 3, load live wire 4, current transformer 5 simultaneously when installing; During work, metering module is installed in user's panel box (cabinet), low-tension switch cabinet or the cable distribution box along separate routes, can be installed in jointly with user's multi-circuit breaker on the same guide rail, and the pilot lamp that every paths is corresponding can or be safeguarded and use for the system works indication.
Implement more than only to realize, and be not that particularly along with the development of chip integrated technology, affiliated technical professional can be easy to adopt other SOC integrated chips to substitute and realize to its restriction in order to the technology that shows the utility model.All are made amendment or the part technical characterictic are equal to replacement the embodiment of the utility model, and do not break away from the spirit of the utility model technical scheme, and it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.

Claims (3)

1. an electric energy shunt WT-MSR comprises metering module and external communication module along separate routes, and metering module is installed in panel box or low-tension switch cabinet or the cable distribution box along separate routes, and the energy consumption of multichannel loading circuit is carried out one by one or the metering of dividing into groups; External communication module is installed in the optional position in the corresponding coverage of metering module carrier communication along separate routes, provides to be positioned at the outside communication interface expansion of panel box or low-tension switch cabinet or cable distribution box;
Metering module comprises current transformer, voltage sampling circuit, signal condition unit, electric energy metrical unit, Signal Spacing unit, data processing unit, first communication interface and first power module along separate routes; Wherein N road electric energy metrical passage is formed in current transformer, voltage sampling circuit, signal condition unit and electric energy metrical unit, and N is a positive integer, and N >=1, and every road electric energy metrical channel characteristic is consistent, and independent mutually;
Described electric energy metrical unit, Signal Spacing unit and data processing unit adopt integrated chip separately or integrate the SOC chip of repertoire;
Current transformer is gathered the ac current signal of loaded line, converts first voltage signal into through resistance and exports to the signal condition unit; Voltage sampling circuit is gathered the ac voltage signal of loaded line, directly converts second voltage signal into and exports to the signal condition unit; The signal condition unit is made up of current channel filtering circuit and voltage channel filtering circuit; First voltage signal that the current channel filtering circuit will collect carries out filter shape; Convert first differential signal into and export to the electric energy metrical unit; Second voltage signal that the voltage channel filtering circuit will collect carries out filter shape, converts second differential signal into and exports to the electric energy metrical unit;
The electric energy metrical unit carries out the multiplicative integral computing to second differential signal of gathering on first differential signal gathered on the current channel and the voltage channel and obtains electric energy measurement data, and electric energy measurement data is exported to the Signal Spacing unit with pulse signal form or digital interface form; The digital circuit part of high-tension artificial circuit part of Signal Spacing cell isolation and low-voltage, electric energy measurement data are exported to data processing unit after through isolated location; Data processing unit comprises single-chip microcomputer and FLASH storage chip; The FLASH chip is connected on the single-chip microcomputer; Data processing unit writes down statistics and calculation process to the data of each passage collection; And,, to the user electric energy measurement data is provided via first communication interface according to unified specification data form according to user's query requests;
First communication interface specifically comprises first output interface and first carrier interface; First output interface links to each other with data processing unit through different UART interfaces with the first carrier interface, and the first output interface form is RS232/RS485 interface or Ethernet interface; The first carrier interface with adopt power line carrier technology and transparent communication protocol between external communication module is communicated by letter.
2. a kind of electric energy as claimed in claim 1 is WT-MSR along separate routes, and external communication module mainly comprises second communication interface and second source module, and the second communication interface specifically comprises second output interface and second carrier interface; Second carrier interface links to each other with the first carrier interface of shunt metering module through line of electric force; Second output interface of external communication module is that the user inquires about the main interface that obtains data outside panel box, and the electric type of this interface is consistent with first output interface.
3. a kind of electric energy as claimed in claim 1 is WT-MSR along separate routes, only adopts line of electric force to link to each other between metering module and the external communication module along separate routes, between the two based on the power line carrier technology mutual communication; And external communication module is as optional annex, and metering module can use separately along separate routes.
CN2012200265812U 2012-01-20 2012-01-20 Electrical energy shunt metering device Expired - Fee Related CN202443064U (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102879637A (en) * 2012-09-26 2013-01-16 杭州华三通信技术有限公司 Acquisition device and method for energy consumption in POE (power over Ethernet) system
CN103823108A (en) * 2012-11-19 2014-05-28 苏州工业园区新宏博通讯科技有限公司 Multipath AC-DC ammeter
CN103852635A (en) * 2012-12-06 2014-06-11 苏州工业园区新宏博通讯科技有限公司 Multi-path electric meter
CN104217570A (en) * 2013-06-04 2014-12-17 国家电网公司 Power line carrier meter reading system
CN105572471A (en) * 2015-12-18 2016-05-11 杭州意聚电子技术有限公司 Multipath meter, built-in circuit board and centralized meter reading system
CN106018944A (en) * 2016-08-11 2016-10-12 国网新疆电力公司信息通信公司 Multifunctional communication machine cabinet
CN106066412A (en) * 2016-07-20 2016-11-02 柳州六品科技有限公司 A kind of metering separate intelligent electric energy meter
CN109490708A (en) * 2018-11-15 2019-03-19 湖南长高思瑞自动化有限公司 A kind of intelligent low-pressure branch monitoring device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102879637A (en) * 2012-09-26 2013-01-16 杭州华三通信技术有限公司 Acquisition device and method for energy consumption in POE (power over Ethernet) system
CN102879637B (en) * 2012-09-26 2015-11-25 杭州华三通信技术有限公司 Energy consumption harvester and method in a kind of POE system
CN103823108A (en) * 2012-11-19 2014-05-28 苏州工业园区新宏博通讯科技有限公司 Multipath AC-DC ammeter
CN103852635A (en) * 2012-12-06 2014-06-11 苏州工业园区新宏博通讯科技有限公司 Multi-path electric meter
CN104217570A (en) * 2013-06-04 2014-12-17 国家电网公司 Power line carrier meter reading system
CN105572471A (en) * 2015-12-18 2016-05-11 杭州意聚电子技术有限公司 Multipath meter, built-in circuit board and centralized meter reading system
CN106066412A (en) * 2016-07-20 2016-11-02 柳州六品科技有限公司 A kind of metering separate intelligent electric energy meter
CN106018944A (en) * 2016-08-11 2016-10-12 国网新疆电力公司信息通信公司 Multifunctional communication machine cabinet
CN109490708A (en) * 2018-11-15 2019-03-19 湖南长高思瑞自动化有限公司 A kind of intelligent low-pressure branch monitoring device

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120919

Termination date: 20190120

CF01 Termination of patent right due to non-payment of annual fee