CN103217574A - Metering device of checking tool of electric energy data - Google Patents

Metering device of checking tool of electric energy data Download PDF

Info

Publication number
CN103217574A
CN103217574A CN2013100903969A CN201310090396A CN103217574A CN 103217574 A CN103217574 A CN 103217574A CN 2013100903969 A CN2013100903969 A CN 2013100903969A CN 201310090396 A CN201310090396 A CN 201310090396A CN 103217574 A CN103217574 A CN 103217574A
Authority
CN
China
Prior art keywords
electric capacity
terminal
connects
resistance
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2013100903969A
Other languages
Chinese (zh)
Other versions
CN103217574B (en
Inventor
陆磊
袁晓明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI RUNPOWER INFORMATION TECHNOLOGY Co Ltd
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
Original Assignee
SHANGHAI RUNPOWER INFORMATION TECHNOLOGY Co Ltd
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI RUNPOWER INFORMATION TECHNOLOGY Co Ltd, State Grid Corp of China SGCC, Shanghai Municipal Electric Power Co filed Critical SHANGHAI RUNPOWER INFORMATION TECHNOLOGY Co Ltd
Priority to CN201310090396.9A priority Critical patent/CN103217574B/en
Publication of CN103217574A publication Critical patent/CN103217574A/en
Application granted granted Critical
Publication of CN103217574B publication Critical patent/CN103217574B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention relates to a metering device of a checking tool of electric energy data. The metering device comprises a voltage sampling circuit, a current sampling circuit, a metering chip, a main control chip, a storage and a power source circuit, wherein the metering chip is respectively connected with the voltage sampling circuit and the current sampling circuit, and the main control chip is respectively connected with the metering chip and the storage. Compared with the prior art, the metering device has the advantages of being high in metering accuracy, good in stability of operation, and the like.

Description

A kind of electric energy data is checked the metering outfit of instrument
Technical field
The present invention relates to a kind of electrical energy metering equipment, especially relate to a kind of metering outfit that electric energy data is checked instrument that is used for.
Background technology
The Data Source that becomes more meticulous when the foreground partition line loss mainly is divided into supply side and sale of electricity side, and as a line loss unit, platform district line loss is because the diversity of the relative complexity of platform district supply network and electricity consumption is the difficult point of line loss management always.In the line loss management work of reality, for the unusual platform district of line loss, controversial situation often often appears in a part of platform district, promptly all do not see with traditional method what problem is arranged for sale of electricity side electric weight, but line loss per unit calculating is very big.Because the supply side data source is more single, at first need to determine the accuracy of supply side data for controversial district.Current have two kinds usually for this problem, and first kind is to change table, and second kind is two table paired runnings.This dual mode all needs the user is had a power failure, and has reduced power supply reliability and energy data available rate, and issue table is torn the censorship of table back open needs the long cycle, for the table of this no problem, is a kind of waste.Need can data check electric weight by a kind of instrument, analyze and the unusual reason of definite line loss, therefore need the high metering outfit of a kind of measuring accuracy of design.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of high metering outfit of measuring accuracy that electric energy data is checked instrument that is used for for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of electric energy data is checked the metering outfit of instrument, comprise voltage sampling circuit, current sampling circuit, computation chip, main control chip, storer and power circuit, described computation chip connects voltage sampling circuit and current sampling circuit respectively, and described main control chip connects computation chip, storer respectively.
Described voltage sampling circuit comprises three identical single-phase sampling electronic circuits of circuit structure, one end of three single-phase sampling electronic circuits connects the N phase, the other end connects A phase, B phase and C respectively mutually, each single-phase sampling electronic circuit comprises divider resistance, sampling resistor, first electric capacity and second electric capacity, described divider resistance and sampling resistor series connection, after described first electric capacity and the second electric capacity parallel connection, one end connects the common point of divider resistance and sampling resistor, and an end leads to computation chip as the voltage sample lead-out terminal.
Described current sampling circuit comprises first current transformer, second current transformer, the 3rd current transformer, first resistance, second resistance and the 3rd resistance, one of them terminal of the Secondary Winding of three current transformers interconnects, another terminal leads to computation chip as the current sample lead-out terminal, and described first resistance, second resistance and the 3rd resistance are connected between two terminals of first current transformer, second current transformer, the 3rd secondary winding in current transformer.
Described storer is EEPROM.
Described power circuit comprises adjustable resistance, transformer, full bridge inverter, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the three-terminal voltage-stabilizing chip, first diode, second diode and a direct supply, the transformer input end connects the external communication source, adjustable resistance is connected between two input terminals of transformer input end, the output terminal of transformer connects the input end of full bridge inverter, a lead-out terminal of full bridge inverter output terminal connects the input terminal of three-terminal voltage-stabilizing chip, another lead-out terminal ground connection of full bridge inverter output terminal, after the 3rd electric capacity and the 4th electric capacity parallel connection, the one end connects the input terminal of three-terminal voltage-stabilizing chip, other end ground connection, the lead-out terminal of described three-terminal voltage-stabilizing chip connects the 5th electric capacity, one end of the 6th electric capacity and the anode of first diode, the other end ground connection of the 5th electric capacity and the 6th electric capacity, the negative electrode of first diode connects an end of the 7th electric capacity and the negative electrode of second diode, the other end ground connection of the 7th electric capacity, the minus earth of described direct supply, the anodal anode that connects second diode, the lead-out terminal of described three-terminal voltage-stabilizing chip is drawn the first via output as power circuit, and the negative electrode of first diode is drawn the second tunnel output as power circuit.
Described the 3rd electric capacity, the 5th electric capacity and the 7th electric capacity are electrochemical capacitor, and an end of its ground connection is a negative pole.
Compared with prior art, the present invention is by voltage sampling circuit and current sampling circuit, respectively to the A phase of mains supply side, B mutually and C mutually circuit carry out electric current and voltage sample, add up by computation chip then, can reach very high measuring accuracy, for the unusual analysis of follow-up line loss provides good data qualification, adopt rational power circuit design in addition, improved the operation stability of metering outfit.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the circuit diagram of voltage sampling circuit;
Fig. 3 is the circuit diagram of current sampling circuit;
Fig. 4 is the circuit diagram of power circuit.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of electric energy data is checked the metering outfit of instrument, comprise voltage sampling circuit 1, current sampling circuit 2, computation chip 3, main control chip 4, storer 5 and power circuit 6, computation chip 3 connects voltage sampling circuit 1 and current sampling circuit 2 respectively, main control chip 4 connects computation chip 3, storer 5 respectively, power circuit 6 provides power supply for each parts of metering outfit, and storer 5 adopts EEPROM.
Wherein, the particular circuit configurations of voltage sampling circuit as shown in Figure 2, comprise three identical single-phase sampling electronic circuits of circuit structure, one end of three single-phase sampling electronic circuits connects the N phase, the other end connects the A phase respectively, B mutually with C mutually, each single-phase sampling electronic circuit comprises divider resistance R4, sampling resistor R5, first capacitor C 1 and second capacitor C 2, described divider resistance R4 and sampling resistor R5 series connection, after described first capacitor C 1 and 2 parallel connections of second capacitor C, one end connects the common point of divider resistance R4 and sampling resistor R5, and an end leads to computation chip 3 as the voltage sample lead-out terminal.
The particular circuit configurations of current sampling circuit as shown in Figure 3, comprise the first current transformer CT1, the second current transformer CT2, the 3rd current transformer CT3, first resistance R 1, second resistance R 2 and the 3rd resistance R 3, one of them terminal of the Secondary Winding of three current transformers interconnects, another terminal leads to computation chip 3 as the current sample lead-out terminal, described first resistance R 1, second resistance R 2 and the 3rd resistance R 3 are connected to the first current transformer CT1, the second current transformer CT2, between two terminals of the 3rd current transformer CT3 Secondary Winding.
The particular circuit configurations of power circuit comprises adjustable resistance R6, transformer TC, full bridge inverter VD, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, three-terminal voltage-stabilizing chip IC, the first diode D1, the second diode D2 and a direct supply S as shown in Figure 4.Transformer TC input end connects the external communication source, adjustable resistance R6 is connected between two input terminals of transformer TC input end, the output terminal of transformer TC connects the input end of full bridge inverter VD, a lead-out terminal of full bridge inverter VD output terminal connects the input terminal of three-terminal voltage-stabilizing chip IC, another lead-out terminal ground connection of full bridge inverter VD output terminal, after the 3rd capacitor C 3 and 4 parallel connections of the 4th capacitor C, the one end connects the input terminal of three-terminal voltage-stabilizing chip IC, other end ground connection, the lead-out terminal of described three-terminal voltage-stabilizing chip IC connects the 5th capacitor C 5, one end of the 6th capacitor C 6 and the anode of the first diode D1, the other end ground connection of the 5th capacitor C 5 and the 6th capacitor C 6, the negative electrode of the first diode D1 connects an end of the 7th capacitor C 7 and the negative electrode of the second diode D2, the other end ground connection of the 7th capacitor C 7, the minus earth of described direct supply S, the anodal anode that connects the second diode D2, the lead-out terminal of described three-terminal voltage-stabilizing chip IC is drawn as the negative electrode of the first via of power circuit 6 output 01, the first diode D1 is drawn the second tunnel output 02 as power circuit 6.Wherein, the 3rd capacitor C 3, the 5th capacitor C 5 and the 7th capacitor C 7 are electrochemical capacitor, and an end of its ground connection is a negative pole.
The present invention is by voltage sampling circuit and current sampling circuit, respectively to the A phase of mains supply side, B mutually and C mutually circuit carry out electric current and voltage sample, add up by computation chip then, can reach very high measuring accuracy, for the unusual analysis of follow-up line loss provides good data qualification, adopt rational power circuit design in addition, improved the operation stability of metering outfit.

Claims (6)

1. an electric energy data is checked the metering outfit of instrument, it is characterized in that, comprise voltage sampling circuit, current sampling circuit, computation chip, main control chip, storer and power circuit, described computation chip connects voltage sampling circuit and current sampling circuit respectively, and described main control chip connects computation chip, storer respectively.
2. a kind of electric energy data according to claim 1 is checked the metering outfit of instrument, it is characterized in that, described voltage sampling circuit comprises three identical single-phase sampling electronic circuits of circuit structure, one end of three single-phase sampling electronic circuits connects the N phase, the other end connects the A phase respectively, B mutually with C mutually, each single-phase sampling electronic circuit comprises divider resistance, sampling resistor, first electric capacity and second electric capacity, described divider resistance and sampling resistor series connection, after described first electric capacity and the second electric capacity parallel connection, one end connects the common point of divider resistance and sampling resistor, and an end leads to computation chip as the voltage sample lead-out terminal.
3. a kind of electric energy data according to claim 1 is checked the metering outfit of instrument, it is characterized in that, described current sampling circuit comprises first current transformer, second current transformer, the 3rd current transformer, first resistance, second resistance and the 3rd resistance, one of them terminal of the Secondary Winding of three current transformers interconnects, another terminal leads to computation chip as the current sample lead-out terminal, described first resistance, second resistance and the 3rd resistance are connected to first current transformer, second current transformer, between two terminals of the 3rd secondary winding in current transformer.
4. a kind of electric energy data according to claim 1 is checked the metering outfit of instrument, it is characterized in that, described storer is EEPROM.
5. a kind of electric energy data according to claim 1 is checked the metering outfit of instrument, it is characterized in that, described power circuit comprises adjustable resistance, transformer, full bridge inverter, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the three-terminal voltage-stabilizing chip, first diode, second diode and a direct supply, the transformer input end connects the external communication source, adjustable resistance is connected between two input terminals of transformer input end, the output terminal of transformer connects the input end of full bridge inverter, a lead-out terminal of full bridge inverter output terminal connects the input terminal of three-terminal voltage-stabilizing chip, another lead-out terminal ground connection of full bridge inverter output terminal, after the 3rd electric capacity and the 4th electric capacity parallel connection, the one end connects the input terminal of three-terminal voltage-stabilizing chip, other end ground connection, the lead-out terminal of described three-terminal voltage-stabilizing chip connects the 5th electric capacity, one end of the 6th electric capacity and the anode of first diode, the other end ground connection of the 5th electric capacity and the 6th electric capacity, the negative electrode of first diode connects an end of the 7th electric capacity and the negative electrode of second diode, the other end ground connection of the 7th electric capacity, the minus earth of described direct supply, the anodal anode that connects second diode, the lead-out terminal of described three-terminal voltage-stabilizing chip is drawn the first via output as power circuit, and the negative electrode of first diode is drawn the second tunnel output as power circuit.
6. a kind of electric energy data according to claim 5 is checked the metering outfit of instrument, it is characterized in that, described the 3rd electric capacity, the 5th electric capacity and the 7th electric capacity are electrochemical capacitor, and an end of its ground connection is a negative pole.
CN201310090396.9A 2013-03-20 2013-03-20 A kind of electric energy data checks the metering outfit of instrument Active CN103217574B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310090396.9A CN103217574B (en) 2013-03-20 2013-03-20 A kind of electric energy data checks the metering outfit of instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310090396.9A CN103217574B (en) 2013-03-20 2013-03-20 A kind of electric energy data checks the metering outfit of instrument

Publications (2)

Publication Number Publication Date
CN103217574A true CN103217574A (en) 2013-07-24
CN103217574B CN103217574B (en) 2015-09-02

Family

ID=48815538

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310090396.9A Active CN103217574B (en) 2013-03-20 2013-03-20 A kind of electric energy data checks the metering outfit of instrument

Country Status (1)

Country Link
CN (1) CN103217574B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111650435A (en) * 2020-08-04 2020-09-11 南京衡瑞电子科技有限公司 Electric energy metering chip system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050071096A1 (en) * 2003-07-29 2005-03-31 Lutz Bierl Electric energy meter for an AC mains supply
CN201352233Y (en) * 2009-05-18 2009-11-25 深圳市森晖电子有限公司 Three-phase multifunctional electric energy meter with power carrier communication
CN201514443U (en) * 2009-09-17 2010-06-23 青岛盘古电气有限公司 Novel multifunctional energy meter
CN201662593U (en) * 2009-10-15 2010-12-01 黑龙江龙电电气有限公司 Three-phase electronic GPRS multi-functional electric energy meter
CN102062814A (en) * 2009-11-16 2011-05-18 上海安科瑞电气股份有限公司 ZIGBEE technology-based three-phase guide rail-type installed electric energy meter
CN202305664U (en) * 2011-10-28 2012-07-04 国网电力科学研究院 Electric energy meter circuit
CN202372570U (en) * 2011-12-07 2012-08-08 江苏盛德电子仪表有限公司 Three-phase four-wire multifunctional electric energy meter
CN203224565U (en) * 2013-03-20 2013-10-02 国家电网公司 A metering apparatus of an electric energy data verifying tool

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050071096A1 (en) * 2003-07-29 2005-03-31 Lutz Bierl Electric energy meter for an AC mains supply
CN201352233Y (en) * 2009-05-18 2009-11-25 深圳市森晖电子有限公司 Three-phase multifunctional electric energy meter with power carrier communication
CN201514443U (en) * 2009-09-17 2010-06-23 青岛盘古电气有限公司 Novel multifunctional energy meter
CN201662593U (en) * 2009-10-15 2010-12-01 黑龙江龙电电气有限公司 Three-phase electronic GPRS multi-functional electric energy meter
CN102062814A (en) * 2009-11-16 2011-05-18 上海安科瑞电气股份有限公司 ZIGBEE technology-based three-phase guide rail-type installed electric energy meter
CN202305664U (en) * 2011-10-28 2012-07-04 国网电力科学研究院 Electric energy meter circuit
CN202372570U (en) * 2011-12-07 2012-08-08 江苏盛德电子仪表有限公司 Three-phase four-wire multifunctional electric energy meter
CN203224565U (en) * 2013-03-20 2013-10-02 国家电网公司 A metering apparatus of an electric energy data verifying tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111650435A (en) * 2020-08-04 2020-09-11 南京衡瑞电子科技有限公司 Electric energy metering chip system

Also Published As

Publication number Publication date
CN103217574B (en) 2015-09-02

Similar Documents

Publication Publication Date Title
CN204835653U (en) UPS testing arrangement
CN203224565U (en) A metering apparatus of an electric energy data verifying tool
CN103217574B (en) A kind of electric energy data checks the metering outfit of instrument
CN203858310U (en) Large-power energy-storage current transformer testing system
CN204116503U (en) Intelligent AC distribution equipment accurate monitoring device
CN204964670U (en) Electric energy strapping table inspection of a line appearance of visiting one house after another
CN204129190U (en) A kind of electric conductance test instrument for storage battery
CN203929939U (en) Platform district identifier
CN204206279U (en) A kind of standby power consumption of mobile phone test circuit
CN203224548U (en) A current sampling circuit of an electric energy data verifying tool
CN204241617U (en) Energy-saving transmission line malfunction monitoring system
CN103916070B (en) Threephase asynchronous minimum power input energy saver and using method thereof
CN202676785U (en) Measuring device for working current of electronic equipment
CN203313072U (en) Power supply circuit of electrical-energy data verification tool
CN207008345U (en) A kind of Demand-side energy information harvester of distributed photovoltaic access
CN203224549U (en) A voltage sampling circuit of an electric energy data verifying tool
CN204462368U (en) A kind of portable type current transformer graph of errors proving installation
CN203502519U (en) Three-phase transformer and three-phase inductor load detecting system
CN203747717U (en) Three-phase asynchronous motor minimum input power energy-saving device
CN107817413A (en) The method of unshorting Resistance Influence in the experiment of transformer low-voltage short-circuit impedance
CN203490308U (en) Double-configuration relay protection verification auxiliary apparatus
CN203278208U (en) Electronic overload relay capable of improving phase loss protection reliability
CN106249046A (en) A kind of signals collecting metering module
CN202330551U (en) Metering circuit of single-phase three-wire keyboard electric energy meter
CN206541009U (en) A kind of lithium cell charging current detecting system

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model