CN205193156U - Smart electric meter with self -adaptation protection - Google Patents
Smart electric meter with self -adaptation protection Download PDFInfo
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- CN205193156U CN205193156U CN201521020463.0U CN201521020463U CN205193156U CN 205193156 U CN205193156 U CN 205193156U CN 201521020463 U CN201521020463 U CN 201521020463U CN 205193156 U CN205193156 U CN 205193156U
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Abstract
The utility model discloses a smart electric meter with self -adaptation protection is applied to load circuit, include: unit and load detecting element are blocked to data acquisition unit, data processing unit, processor unit, the control unit, load, the data acquisition unit respectively with the data processing unit reaches the processor unit data connection, data data processing unit with the processor unit data connection, processor unit with the the control unit data connection, the control unit with the unit internet access is blocked to the load load detecting element respectively with processor unit and the the control unit data connection. The utility model discloses in, improved electrical equipment operation's security and reliability.
Description
Technical field
The utility model relates to Electric Energy Metering Technology field, particularly relates to a kind of intelligent electric meter with adaptive guard.
Background technology
The intelligent electric energy meter is the intelligent terminal of intelligent grid, it has not been traditional electric energy meter, intelligent electric meter is except possessing the function of measuring of traditional electric energy meter basic electricity amount, in order to adapt to the use of intelligent grid and new forms of energy, it also has the intelligentized function such as bidirectional data communication function, anti-stealing electricity function of two-way many rates function of measuring, user side controlling functions, plurality of data transmission modes, but, current electric energy meter can only export tripping operation power supply or tripping operation contact, there is technological deficiency and directly effectively can not block power supply exactly.Intelligent electric meter represents the developing direction of following energy-conserving intelligent electrical network final user intelligent terminal.
It is paid dues by user to supplement with money intellective IC card and to input in ammeter that traditional typical case takes control intelligent electric meter, ammeter could be powered, in table, electricity automatically switches off after being finished, and the current perfection of novel intelligent electric meter realizes network power purchase, simple just as prepaid mobile phone recharging.
The birth of self-measuring electric energy meter, development, improvement and ripe whole process, go through more than 100 year so far.By metering electric energy meter structural framing type and principle of work, induction energy meter, electromechanical pulse electric energy meter, electronic electric energy meter and expense control multifunctional electric energy meter Four types can be divided into, represent each different developing stage and development level respectively.
First, for induction energy meter, its kind, model are various, but basic structure is all similar, by measuring mechanism (comprising: driving element, rotating element, braking member, bearing, register etc.), compensation adjustment device and accessory composition.In order to can correctly measure, the adjustment of series of complex be carried out, as fully loaded adjustment, underloading adjustment, voltage compensation, phase place adjustment and temperature compensation etc.; Be limited to material behavior, the strict demand to manufacturing process and the restriction by structure, manufacture the higher induction energy meter of accuracy grade quite difficulty; Its principle of work and design, manufacture code determine in only very narrow near power frequency frequency range and voltage, electric current are under sine-shaped condition, can ensure nominal operation performance, as long as when waveform has a distortion, its accuracy is just affected; Owing to adopting instrument mechanical rotation, therefore the power consumption of table meter self is larger; In addition, function singleness also limit its usable range.
Secondly, for mechanical-electronic pulse formula electronic electric energy meter, photoelectric commutator is the key component of mechanical-electronic pulse formula electronic electric energy meter.According to the difference of photoelectric commutator, mechanical-electronic pulse formula electronic electric energy meter can be divided into unidirectional pulse formula and bidirectional pulse formula two type.
Again, be that measuring mechanism measures alternate electric energy to substitute by induction, electronic electric energy meter arises at the historic moment.Consider the modern inevitable development direction of electric energy management, need access much information and require the two-way communication between decision-making and electricity price utensil, and the expansion of digital multiplication type electronic electric energy meter function is very convenient, very easily and electrical power distribution automatization system integrated, therefore having expert expects, digital multiplication type electronic electric energy meter will become the main development direction of electronic electric energy meter from now on.
Finally, the high speed development of microelectric technique and computer technology is that electronic electric energy meter develops rapidly, increasingly mature principal element.The components and parts of pin-point accuracy, high reliability and large-scale circuit integrated technology etc. make the technical indicators such as the serviceable life of electronic electric energy meter, accuracy, degree of stability have remarkable improvement.Intelligent electric energy meter, due to the series of advantages of himself, replaces traditional induction energy meter the most at last, progressively can modern electric energy metrical with management in dominate.Representative is expense control multifunctional electric energy meter, and its structural principle as shown in Figure 1.
Intelligent electric meter represents the developing direction of following energy-conserving intelligent electrical network final user intelligent terminal.But current electric energy meter can only export tripping operation power supply or tripping operation contact, directly effectively can not turn off power supply.For user intensive (as: medium-and-large-sized market, students' dormitory) occasion, the short time overload of too concentrating, causes circuit to bear load, there is potential safety hazard simultaneously.And this defencive function simply adopts and is located on outlet switch; when certain user's (as intensive in the electricity consumption such as students' dormitory, big-and-middle-sized market) is difficult to accept this protected mode; a lot of user can remove voluntarily, use other switch instead, and this function is just invalid.And be arranged in metering electric energy meter, user just can be allowed to force to accept the restriction of load to guarantee safety.
Utility model content
The utility model provides a kind of intelligent electric meter with adaptive guard, to improve the safety and reliability of electric equipment operation.
In order to achieve the above object, the utility model provides a kind of intelligent electric meter with adaptive guard, be applied in load circuit, comprise: data acquisition unit, data processing unit, processor unit, control module, load blocking unit and load detecting unit;
Described data acquisition unit respectively with described data processing unit and described processor unit data cube computation, described data processing unit and described processor unit data cube computation, described processor unit and described control module data cube computation, described control module is connected with described load blocking unit network; Described load detecting unit respectively with described processor unit and described control module data cube computation;
Described data acquisition unit, for being sent to described data processing unit and described processor unit respectively by raw data;
Described data processing unit, for calculating operational data according to described raw data and being sent to described processor unit;
Described processor unit is used for calculating electric parameter according to described raw data and described operational data and being sent to described control module;
Described control module, for determining that according to the electric parameter received whether described load circuit is normal, when determining that described load circuit is improper, indicates described load blocking unit deenergization;
Described load detecting unit, for in a period of time after receiving power supply that described control module sent by described processor unit and disconnecting message, when not receiving the power supply connection message of described processor unit transmission, the low-voltage high frequency electric source that it loads is utilized to carry out load detecting to described intelligent electric meter.
Further, described intelligent electric meter also comprises alarm unit, described alarm unit and described processor unit data cube computation, and the power supply for receiving according to described processor unit disconnects message and sends alerting signal.
Further, described load detecting unit also with described control module data cube computation, for when detecting that described load circuit is normal, inform described control module indicate described load blocking unit be communicated with power supply.
Further, described intelligent electric meter also comprises communication unit, described communication unit and described processor unit data cube computation, and described communication unit is used for described intelligent electric meter to be connected with background server network.
Further, described intelligent electric meter also comprises display unit, and described display unit and described processor unit data cube computation, for showing the data of described intelligent electric meter.
Compared with prior art, the utility model at least has the following advantages:
By technical scheme provided by the utility model, achieve the automatic control of intelligent electric meter and automatically carry out load detecting, devising adaptive guard function simultaneously, improve the safety and reliability of electric equipment operation.
Accompanying drawing explanation
Fig. 1 is the structural principle frame diagram taking control multifunctional electric energy meter in prior art;
Fig. 2 is the structural drawing of the intelligent electric meter that the utility model proposes;
Fig. 3 is the structural principle frame diagram with adaptive three-phase intelligent ammeter that the utility model proposes;
Fig. 4 is the structural principle frame diagram with adaptive single-phase intelligent ammeter that the utility model proposes;
Accompanying drawing 5 is the schematic diagram leading in/out opposite side wiring each other (upper entering and lower leaving three-phase meter) that the utility model proposes;
Fig. 6 is the schematic diagram leading in/out opposite side wiring each other (bottom in and top out three-phase meter) that the utility model proposes;
Fig. 7 is the schematic diagram leading in/out opposite side wiring each other (upper entering and lower leaving single-phase meter) that the utility model proposes;
Fig. 8 is the schematic diagram leading in/out opposite side wiring each other (bottom in and top out single-phase meter) that the utility model proposes.
Embodiment
The utility model proposes a kind of intelligent electric meter with adaptive guard; be applied in load circuit; as shown in Figure 2, comprising: data acquisition unit, data processing unit, processor unit, control module, load blocking unit, alarm unit, load detecting unit, communication unit and display unit.Below in conjunction with accompanying drawing 3 and accompanying drawing 4, the utility model embodiment is described in detail.
Concrete,
Data acquisition unit, for being sent to data processing unit and processor unit respectively by raw data;
Data acquisition unit carries out the collection of current/voltage two kinds of raw data.Wherein, this data acquisition unit is made up of current collector, voltage collector, power pack and voltage changer, after the current/voltage of collection is converted to electric quantity signal or data-signal respectively, send to data processing unit, current/voltage two kinds of raw data are transported to processor unit simultaneously.
Data processing unit, for calculating operational data according to raw data and being sent to processor unit;
Data processing unit, after the electric quantity signal receiving data acquisition unit transmission or data-signal, be treated to number signal, and this number signal is transported to processor unit.
Concrete data processing comprises two kinds of modes:
First traditional analog scheme: be made up of " multiplier ", " voltage to frequency converter ", " frequency divider, counter " circuit etc.The electric current of collection, voltage raw data are input to " multiplier " circuit counting and go out instantaneous power, then carry out accumulative integrating with time parameter; Result of calculation is passed through again, and " voltage to frequency converter " is converted to pulse signal, is then converted to number signal by " frequency divider, counter ", then is transported to processor unit;
It two is analog/digital (A/D) conversion plans: be made up of current collector, voltage collector, special A/D converter (A/D converter), electric energy metrical special IC etc.By electric current, voltage analog signal by after the special A/D converter of high-precision high-speed (A/D) conversion and signal transacting, enter into electric energy metrical special IC and carry out the calculating of electric energy and every analyzing and processing, analysis processing result is sent to processor unit.
Processor unit, for calculating electric parameter according to raw data and operational data and being sent to control module;
Processor unit, after receiving current/voltage two kinds of raw data and number signal, calculates required all electric parameters, comprises maximal value, the mean value of certain period electric energy physical quantity.
Control module, for according to the whether load of the electric parameter determination load circuit that receives, when determining that load circuit is improper, instruction load blocking unit deenergization.
Concrete; control module comprises controlling functions such as comprising expense control action (disconnect, open operation), adaptive guard action [recovering after action current Ip=kIn protection act (k is action factor, and In is certain period average current or default load Limited Current), releasing], overload protection action (disconnect, remove rear recovery).Realize according to electric current (mean value or maximal value can be " data of record " or " data of computing ") the automatic pre-set Selecting parameter protection that a certain period is normally run.Also namely according to the load condition of user's normal electricity consumption; the initial setting valve of automatic pre-set; [as the k of the mean value or maximal value that select last period running current, doubly (k is as parameter preset to set the unexpected excess current protective function of value according to this setting valve; usually optional 1.05 ~ 1.35)]; during as being not less than k doubly preset protective current value, determine that load circuit is normal.
When determining that load circuit is improper, instruction load blocking unit deenergization, namely indicates direct-type blocking swtich to cut off the electricity supply, stops illegal electricity consumption, enhance defencive function.This blocking swtich can adopt the moving fault two-position switch of band self-locking (or adopting bidirectional thyristor or other noncontacting switch to carry out blocking or opening operation); on-load is only provided to disconnect or making operation; isolating switch short-circuit protection function being left for rear end performs; to increase the service life, reduce care and maintenance.Do not consume electric energy when normal operation simultaneously.Otherwise, do not indicate load blocking unit deenergization.
Alarm unit, the power supply for receiving according to processor unit disconnects message and sends alerting signal.
The power supply that processor unit reception control unit sends disconnects message;
Processor unit notice alarm unit power supply disconnects making alarm unit send alerting signal.
Usual alarm unit comprises that control action (power-off) is reported to the police, expense control action (few expense advance notice and arrearage alarm) anticipating signal and warning, adaptive guard action warning, overload protection action warning, system exception are reported to the police, load abnormal alarm.
Load detecting unit, in a period of time after the power supply disconnection message receiving processor unit transmission, when not receiving the power supply connection message of processor unit transmission, carries out load detecting to intelligent electric meter; Also for when detecting that load circuit is normal, inform that control module instruction load blocking unit is communicated with power supply.Wherein, load detecting unit utilizes the low-voltage high frequency electric source that it loads to carry out load detecting.
The power supply that processor unit reception control unit sends disconnects message;
Processor unit notification payload detecting unit power supply disconnects, and carries out load detecting when not receiving the power supply connection message of processor unit transmission to make load detecting unit within a period of time to intelligent electric meter.
Concrete, under the state that power supply disconnects, pass through loaded " specially " low-voltage high frequency electric source output detections electric current, according to high frequency by detecting the impedance (comprising resistive impedance, induction reactance and capacitive reactance) of load equipment, whether comparative analysis is normal, as automatically recovered power transmission in normal range, namely when load detecting unit detects that load circuit is normal, control module instruction load blocking unit is communicated with power supply.If abnormal, do not perform automatic closing operation, provide corresponding alerting signal by processor unit notice alarm unit simultaneously.
Communication unit, communication unit is used for intelligent electric meter to be connected with background server network.
Communication unit and processor unit data cube computation, processor unit, by the connection with communication unit, makes the management backstage be connected with communication unit network can realize adding up the Long-distance Control of intelligent electric meter and the long-range table number carried out on intelligent electric meter.
Display unit, for showing the data of intelligent electric meter.
Processor unit is also connected with the display unit data of intelligent electric meter, is carried out the display of corresponding data by display unit.Wherein, this display unit comprises LCD display, electric card interface, remote reading mouth and watchdog circuit.
By the proposition of such scheme, achieve the machine and control and automatic power transmission function, by the self-detection mechanism of ammeter program, avoid the generation of mishap.
Further, intelligent electric meter comprises monolithic construction and split-type structural.
For intelligent electric meter provided by the utility model, be select corresponding functional unit to be combined into intelligent electric meter as required, can gather and be assembled into one (monoblock type) or multiple assembly (separately-loaded) intelligent electric meter.
Wherein, for split-type structural, the parts that two parts or multiple assembly are independently installed mainly are divided into the different installation requirement of main circuit part and display terminal and external interface part two aspect, each inter-module adopts special (or data) wire harness to connect, and can become as a whole or (being formed by connecting with data line) multiple split.By the connection of special wire harness, achieve the clear data transmission of each inter-module, reach zero loss of electric energy.
And split-type structural is specially adapted to be arranged in the equipment of different interval requirement, as: in high-tension switch gear, the main circuit part of Split type intelligent ammeter is arranged in high pressure main circuit interval, and display and external interface part are arranged on secondary instrument indoor, simultaneously, original electric flux signal is first converted to digital signal, traditional electrical Energy Transfer is promoted to data cube computation, to improve reliability and the security of transmission.
Further, the overall front shape of intelligent electric meter and display unit are rectangle regular shape.
In the design of intelligent electric meter, its overall front shape and display plane are all designed to rectangle regular shape, thus make multiple stage ammeter realization " gapless " install side by side, connect up side by side.For the electric energy metrical controller switching equipment installed concentratedly in a large number now, it is made to arrange in controller switching equipment neat, attractive in appearance.
Further, intelligent electric meter adopts the opposite side mode of connection.
Simultaneously, intelligent electric meter provided by the utility model, its planform, layout and electrical connection adopt consistent with its supporting product (line switch), adopt the opposite side mode of connection, realize suitable arrangement mode and rational wiring configuration, at saving installing space, reduce bonding conductor consumption.Meanwhile, load (conductor) and mains side (conductor) can effectively separate by this layout, improve the security that equipment runs, safeguards, overhauls, significantly save the consumption of metallic conductor, improve the economy of product.Design for lead line is arranged specifically see shown in Fig. 5-8.
Meanwhile, introducing and its each connection pile crown of extension line all adopt two stud pressuring line structure fastening, shown in Fig. 5-8, guarantee that wiring is solid and reliable, meet " electric power metering device inspection procedure " requirement simultaneously.
Further, by " electric power metering device inspection procedure " requirement, connection pile crown and other parts must be installed to set up defences and be protected lead sealing.Those positions are by after lead sealing, and without approval, user can not arbitrarily open.
The display plane that the display screen of electric energy meter, pilot lamp, various operated device and external interface are formed, exceeds lead line and connects pile crown plane.When being contained in controller switching equipment, display plane can be allowed outside exposed, facilitate and dailyly to check meter, check, when safeguarding, can intuitively make an inspection tour.And conveniently check meter, the work such as daily servicing; Guarantee that lead line connects the positions such as pile crown and reliably realizes security protection simultaneously, reduce the generation of mishap; Introducing and its each connection pile crown of extension line all can arrange lead sealing, prevent illegal stealing.
By technical scheme provided by the utility model, achieve the automatic control of intelligent electric meter and automatically carry out load detecting, improve the safety and reliability of electric equipment operation.
Wherein, the modules of the utility model device can be integrated in one, and also can be separated deployment.Above-mentioned module can merge into a module, also can split into multiple submodule further.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing might not be that enforcement the utility model is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
Above-mentioned the utility model sequence number, just to describing, does not represent the quality of embodiment.
Be only several specific embodiment of the present utility model above, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.
Claims (5)
1. there is an intelligent electric meter for adaptive guard, be applied in load circuit, it is characterized in that, comprising: data acquisition unit, data processing unit, processor unit, control module, load blocking unit and load detecting unit;
Described data acquisition unit respectively with described data processing unit and described processor unit data cube computation, described data processing unit and described processor unit data cube computation, described processor unit and described control module data cube computation, described control module is connected with described load blocking unit network; Described load detecting unit respectively with described processor unit and described control module data cube computation;
Described data acquisition unit, for being sent to described data processing unit and described processor unit respectively by raw data;
Described data processing unit, for calculating operational data according to described raw data and being sent to described processor unit;
Described processor unit, for calculating electric parameter according to described raw data and described operational data and being sent to described control module;
Described control module, for determining that according to the electric parameter received whether described load circuit is normal, when determining that described load circuit is improper, indicates described load blocking unit deenergization;
Described load detecting unit, for in a period of time after receiving power supply that described control module sent by described processor unit and disconnecting message, when not receiving the power supply connection message of described processor unit transmission, the low-voltage high frequency electric source that it loads is utilized to carry out load detecting to described intelligent electric meter.
2. intelligent electric meter as claimed in claim 1, it is characterized in that, described intelligent electric meter also comprises alarm unit, described alarm unit and described processor unit data cube computation, and the power supply for receiving according to described processor unit disconnects message and sends alerting signal.
3. intelligent electric meter as claimed in claim 1, is characterized in that, described load detecting unit also with described control module data cube computation, for when detecting that described load circuit is normal, inform that described control module indicates described load blocking unit to be communicated with power supply.
4. intelligent electric meter as claimed in claim 1, it is characterized in that, described intelligent electric meter also comprises communication unit, described communication unit and described processor unit data cube computation, and described communication unit is used for described intelligent electric meter to be connected with background server network.
5. intelligent electric meter as claimed in claim 1, it is characterized in that, described intelligent electric meter also comprises display unit, and described display unit and described processor unit data cube computation, for showing the data of described intelligent electric meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020463.0U CN205193156U (en) | 2015-12-09 | 2015-12-09 | Smart electric meter with self -adaptation protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020463.0U CN205193156U (en) | 2015-12-09 | 2015-12-09 | Smart electric meter with self -adaptation protection |
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| Publication Number | Publication Date |
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| CN205193156U true CN205193156U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521020463.0U Expired - Fee Related CN205193156U (en) | 2015-12-09 | 2015-12-09 | Smart electric meter with self -adaptation protection |
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| CN (1) | CN205193156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334387A (en) * | 2015-12-09 | 2016-02-17 | 浙江中安海洋电力科技有限公司 | Intelligent electricity meter with self-adaptive protection function and load detection method |
| CN111856386A (en) * | 2020-07-29 | 2020-10-30 | 南方电网数字电网研究院有限公司 | Intelligent seal management system and method for metering equipment, computer equipment and readable storage medium |
-
2015
- 2015-12-09 CN CN201521020463.0U patent/CN205193156U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334387A (en) * | 2015-12-09 | 2016-02-17 | 浙江中安海洋电力科技有限公司 | Intelligent electricity meter with self-adaptive protection function and load detection method |
| CN111856386A (en) * | 2020-07-29 | 2020-10-30 | 南方电网数字电网研究院有限公司 | Intelligent seal management system and method for metering equipment, computer equipment and readable storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20211209 |