CN204030594U - Intelligent grid terminal use electric energy management and pollution control device - Google Patents
Intelligent grid terminal use electric energy management and pollution control device Download PDFInfo
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- CN204030594U CN204030594U CN201420354353.7U CN201420354353U CN204030594U CN 204030594 U CN204030594 U CN 204030594U CN 201420354353 U CN201420354353 U CN 201420354353U CN 204030594 U CN204030594 U CN 204030594U
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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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model is a kind of intelligent grid terminal use electric energy management and pollution control device.Computer control unit, spike detection unit, harmonic detecting unit that it comprises controlled filter, is connected respectively with described controlled filter; Described spike detection unit is for catching the spiking of intelligent grid, and the spiking after sampling is stored in data storage through sample holding unit, an A/D change-over circuit after carrying out analog-to-digital conversion, is transferred in computer when needing; Harmonic detecting unit is for detecting the high order harmonic component in intelligent grid, and the voltage after sampling, current signal are transferred in computer control unit after conditioning, analog-to-digital conversion, Digital Signal Processing; Described computer control unit for the treatment of and record the data that spike detection unit and harmonic wave detecting unit gather, and control the parameter of filter according to real-time electric network pollution situation, to realize best pollution control effect.
Description
Technical field
The utility model discloses a kind of intelligent grid terminal use electric energy management and pollution control device, belongs to power grid user end field.
Background technology
Because intelligent grid is MODN technology, it is not long that the time is carried out in research, each side's gap is little, now each field is economy and technological superpowers actively competes research, wherein intelligent grid terminal electric energy management system field, mainly comprise electric energy management and the pollution abatement system of intelligent grid terminal use, because itself and terminal use directly have the greatest impact, obtain focusing on energy-conservationly paying close attention to the various places of the quality of power supply.But in a practical situation, electric energy management is administered with electric network pollution and is separated.Electric energy management is mainly monitored the working condition of electrical network, and in time carries out some distribution scheduling, and often only serves the effect of a monitoring at user side, attaches partial circuit protective device at the most.The existence of electric network pollution especially harmonic wave, needs special controlling device, as filter.And between filter and electric energy management system, lack directly communication at present, shortage is compared in the device market controlling filter status for electric network pollution real-time change, needs suitable intelligent grid terminal use electric energy management and the technology and equipment of pollution control integrating control badly.
Summary of the invention
The purpose of this utility model is to solve problems of the prior art, provides a kind of raising power quality, has high reliability, high efficiency, realize intelligent grid terminal use electric energy management and the pollution control device of economizing on energy and electricity.
The utility model is achieved in that a kind of intelligent grid terminal use electric energy management and pollution control device, it is characterized in that: comprise computer control unit, controlled filter, for detected by the electrical network incoming end of tested electrical network tested electric network peak signal spike detection unit, for being detected the harmonic detecting unit of the harmonic signal of tested electrical network by the electrical network incoming end of tested electrical network, described computer control unit is connected with described controlled filter, spike detection unit, harmonic detecting unit respectively;
Described spike detection unit comprises the first sampling unit, the first sample holding unit, an A/D change-over circuit, the first single-chip microcomputer with data storage that are connected successively, and described first single-chip microcomputer is connected with described computer control unit; Described first sampling unit is connected with described electrical network input;
Described harmonic detecting unit comprises the second voltage input sample unit, the second electric current input sample unit, signal condition unit, the 2nd A/D change-over circuit, second singlechip, described second voltage input sample unit, the second electric current input sample unit are connected with described electrical network input, described signal condition unit respectively, described signal condition unit is connected with described 2nd A/D change-over circuit, described 2nd A/D change-over circuit is connected with described second singlechip, and described second singlechip is connected with described computer control unit;
Described controlled filter is connected with described computer control unit, is parallel to the electrical network incoming end of described tested electrical network;
Described computer control unit for the treatment of and record the detection data of described spike detection unit, harmonic detecting unit, and according to detecting electric network pollution situation that data reflect and control the filtering parameter of described controlled filter.
The π type filter circuit that described controlled filter is made up of power capacitor, reactor, resistor, peripheral components, described power capacitor is active program-controlled artificial capacitor, and the control end of described power capacitor is connected with described computer control unit.The capacitance of described power capacitor can adjust change within the specific limits according to the instruction of described computer control unit, thus changes the filtering characteristic of whole π type filter circuit.
Described first single-chip microcomputer is by being connected with described computer control unit with the RS232 interface of infrared light-coupled isolation or RS485 interface.
Described computer control unit is provided with PORT COM and expands module, and described computer control unit is expanded module by described PORT COM and is connected with described controlled filter, spike detection unit, harmonic detecting unit respectively.
The beneficial effects of the utility model are: the utility model can detect the quality condition of electric energy, comprises conventional parameter, power factor etc.High speed output is combined with modern signal processing technology, the electric network pollution situation comprising high order harmonic component and high frequency high order harmonic component can be analyzed.On the basis of sampling, analysis, harmonic inhabitation and harmonic compensation can be carried out respectively to general harmonic wave and high frequency high order harmonic component, significantly promote the quality of power supply.Absorb transient signal (thunderbolt, the surge) pollution to electrical network, the reliability of raising power quality, whole using electricity system and efficiency, and there is power savings.
Accompanying drawing explanation
Fig. 1 is the utility model frame structure schematic diagram.
Embodiment
According to Fig. 1, the utility model comprise computer control unit, controlled filter, for detected by the electrical network incoming end of tested electrical network tested electric network peak signal spike detection unit, for being detected the harmonic detecting unit of the harmonic signal of tested electrical network by the electrical network incoming end of tested electrical network, described computer control unit is provided with PORT COM and expands module, and described computer control unit is expanded module by described PORT COM and is connected with described controlled filter, spike detection unit, harmonic detecting unit respectively.Described first single-chip microcomputer is connected by expanding module with the RS232 interface of infrared light-coupled isolation or RS485 interface with the PORT COM of described computer control unit.Described spike detection unit, described harmonic detecting unit, described controlled filter are connected in parallel on described electrical network incoming end respectively.
Described spike detection unit comprises the first sampling unit, the first sample holding unit, an A/D change-over circuit, the first single-chip microcomputer with data storage that are connected successively, and described first single-chip microcomputer is connected with described computer control unit.
Described harmonic detecting unit comprises the second voltage input sample unit, the second electric current input sample unit, signal condition unit, the 2nd A/D change-over circuit, second singlechip, described second voltage input sample unit, the second electric current input sample unit are connected with described electrical network incoming end, described signal condition unit respectively, described signal condition unit is connected with described 2nd A/D change-over circuit, described 2nd A/D change-over circuit is connected with described second singlechip, and described second singlechip is connected with described computer control unit;
The π type filter circuit that described controlled filter is made up of power capacitor, reactor, resistor, peripheral components; Described power capacitor is active program-controlled artificial capacitor, its control end and described computer control unit control mouth and are connected, its capacitance can adjust change within the specific limits according to the instruction of computer control unit, thus changes the filtering characteristic of whole π type filter circuit.
Described computer control unit for the treatment of and record the data of described spike detection unit, harmonic detecting unit, and according to Data Control the filtering parameter of controlled filter.
The input of described spike detection unit adopts electric resistance partial pressure mode, and accessed building-out capacitor, improve the ability of described spike detection unit sampling transient signal, make it can collect the spiking of 2500V high pressure, 1 μ s, again can the variation of height of detection of grid voltage.In described spike detection unit, carry out sampling by the voltage signal after described first sampling unit sampling through described first sample holding unit to keep, the data in the non-volatile data memory being stored in described first single-chip microcomputer after then carrying out analog-to-digital conversion by a described A/D change-over circuit or after storage are sent in computer control unit by described first single-chip microcomputer.Described first single-chip microcomputer is connected with computer control unit by RS232 or the RS485 interface with infrared ray light-coupled isolation, to prevent high pressure from scurrying into computer control unit, improves the antijamming capability of system communication.
The input of the second voltage input sample unit of described harmonic detecting unit adopts electric resistance partial pressure and building-out capacitor circuit, has the ability of high speed, accurately sampled voltage signal, also improves the bandwidth of sampled signal, to be conducive to the spectrum analysis to high-frequency signal; In order to high speed, accurately sampled current signals, the input of the second electric current input sample unit of described harmonic detecting unit adopts the electric current pliers of wideband, and the frequency of electric current pliers is corresponding reaches 100kHz.Voltage after sampling, current signal are nursed one's health through described signal condition unit, then carry out analog-to-digital conversion by the second A/D converter respectively by selector switch, and carry out Digital Signal Processing.Data after process are directly sent to computer control unit by PORT COM by described second singlechip, and are kept in the memory unit that computer control unit carries.
Described computer control unit is based on virtual instrument technique, adopt common industrial control computer, superposition PORT COM expands module, and described controlled filter, spike detection unit, harmonic detecting unit are set up into bus type automatic detection and control system with industrial computer.The utility model can be monitored the line voltage (phase line and center line) of one of three-phase electricity, voltage to earth (center line and ground wire), frequency in real time; To the three-phase line of sampling occurs that the voltage being greater than set point falls, raises up, transition, interruption, frequency change event carry out real time record; Waveform display and frequency spectrum display are carried out to electric network pollution; Archive backups is carried out to the data of record, or carries out aftertreatment archive backups again, can inquire about data, printout.
Described controlled filter accepts the instruction of computer control unit, real-time change filter parameter, effectively can remove, suppress and the pollution such as absorbing high-frequency rate harmonic wave, high-frequency noise, surge (thunder and lightning), spike transition, grid power waveform is made to become comparatively clean, smooth, play clean electrical network, improve the effect of power grid quality, reduce " kelvin effect " and High-frequency Interference noise because high-frequency harmonic produces.
Described spike detection unit, harmonic detecting unit, controlled filter are three independently device features, are connected in parallel on respectively on tested electrical network.Dividing potential drop of interface, compensating circuit are only meaningful to these parts separately for it, can not have influence on miscellaneous part, so the device of controlled filter cannot be had an effect to the performance of another two devices.Authorize due to described spike detection unit, harmonic detecting unit, controlled filter SEPARATE APPLICATION utility model patent, therefore the utility model does not describe in detail the structural principle of these three parts itself, and inventive point of the present utility model is embodied in by the connection of computer control unit structure respectively and between each parts and improves and connected and be applied in the detection of electrical network and improve on power grid quality by above-mentioned three member in tight.Meanwhile, the utility model improves the power capacitor in described controlled filter, has changed active program-controlled artificial capacitor into, thus has achieved the real-time parameter correction of controlled filter.
Claims (4)
1. an intelligent grid terminal use electric energy management and pollution control device, it is characterized in that: comprise computer control unit, controlled filter, for detected by the electrical network incoming end of tested electrical network tested electric network peak signal spike detection unit, for being detected the harmonic detecting unit of the harmonic signal of tested electrical network by the electrical network incoming end of tested electrical network, described computer control unit is connected with described controlled filter, spike detection unit, harmonic detecting unit respectively;
Described spike detection unit comprises the first sampling unit, the first sample holding unit, an A/D change-over circuit, the first single-chip microcomputer with data storage that are connected successively, and described first single-chip microcomputer is connected with described computer control unit; Described first sampling unit is connected with described electrical network input;
Described harmonic detecting unit comprises the second voltage input sample unit, the second electric current input sample unit, signal condition unit, the 2nd A/D change-over circuit, second singlechip, described second voltage input sample unit, the second electric current input sample unit are connected with described electrical network input, described signal condition unit respectively, described signal condition unit is connected with described 2nd A/D change-over circuit, described 2nd A/D change-over circuit is connected with described second singlechip, and described second singlechip is connected with described computer control unit;
Described controlled filter is connected with described computer control unit, is parallel to the electrical network incoming end of described tested electrical network;
Described computer control unit for the treatment of and record the detection data of described spike detection unit, harmonic detecting unit, and according to detecting the filtering parameter of controlled filter described in Data Control.
2. according to the intelligent grid terminal use electric energy management described in claim 1 and pollution control device, it is characterized in that: the π type filter circuit that described controlled filter is made up of power capacitor, reactor, resistor, peripheral components, described power capacitor is active program-controlled artificial capacitor, and the control end of described power capacitor is connected with described computer control unit.
3. according to the intelligent grid terminal use electric energy management described in claim 1 and pollution control device, it is characterized in that: described first single-chip microcomputer is by being connected with described computer control unit with the RS232 interface of infrared light-coupled isolation or RS485 interface.
4. according to the intelligent grid terminal use electric energy management described in claim 1 and pollution control device, it is characterized in that: described computer control unit is provided with PORT COM and expands module, described computer control unit is expanded module by described PORT COM and is connected with described controlled filter, spike detection unit, harmonic detecting unit respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420354353.7U CN204030594U (en) | 2014-06-30 | 2014-06-30 | Intelligent grid terminal use electric energy management and pollution control device |
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| CN201420354353.7U CN204030594U (en) | 2014-06-30 | 2014-06-30 | Intelligent grid terminal use electric energy management and pollution control device |
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| CN204030594U true CN204030594U (en) | 2014-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078973A (en) * | 2014-06-30 | 2014-10-01 | 上海仪器仪表研究所 | Smart power grid terminal user electric energy management and pollution abatement system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078973A (en) * | 2014-06-30 | 2014-10-01 | 上海仪器仪表研究所 | Smart power grid terminal user electric energy management and pollution abatement system |
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