CN203224549U - A voltage sampling circuit of an electric energy data verifying tool - Google Patents

A voltage sampling circuit of an electric energy data verifying tool Download PDF

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Publication number
CN203224549U
CN203224549U CN 201320128732 CN201320128732U CN203224549U CN 203224549 U CN203224549 U CN 203224549U CN 201320128732 CN201320128732 CN 201320128732 CN 201320128732 U CN201320128732 U CN 201320128732U CN 203224549 U CN203224549 U CN 203224549U
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China
Prior art keywords
phase
voltage
electric energy
sampling
energy data
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Application number
CN 201320128732
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Chinese (zh)
Inventor
黄涛
顾魏
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
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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 CN 201320128732 priority Critical patent/CN203224549U/en
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Publication of CN203224549U publication Critical patent/CN203224549U/en
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Abstract

The utility model relates to a voltage sampling circuit of an electric energy data verifying tool. The voltage sampling circuit connected with the power supplying side of a power grid samples voltage and transmits the voltage to a metering chip of the electric energy data verifying tool. The voltage sampling circuit comprises three single-phase sampling sub circuits with same circuit structure. One ends of the three single-phase sampling sub circuits are connected with the N phase of the power grid, while the other ends of the three single-phase sampling sub circuits are connected with the A phase, B phase, and C phase of the power grid, respectively. Compared with a product in the prior art, the voltage sampling circuit is capable of fast and rapidly sampling voltage data on each phase line of the power supplying side of the power grid. And the electric energy data verifying tool is capable of verifying electric energy data and analyzing and determining the reason of abnormal line loss.

Description

A kind of electric energy data is checked the voltage sampling circuit of instrument
Technical field
The utility model relates to a kind of voltage sampling circuit, especially relates to the voltage sampling circuit that a kind of electric energy data is checked instrument.
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, namely 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.Therefore, need can data check electric weight by a kind of instrument, analyze and the unusual reason of definite line loss, be absolutely necessary for the collection of line voltage.
The utility model content
The purpose of this utility model is exactly to provide a kind of electric energy data to check the voltage sampling circuit of instrument for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of electric energy data is checked the voltage sampling circuit of instrument, described voltage sampling circuit comprises three identical single-phase sampling electronic circuits of circuit structure, one end of three single-phase sampling electronic circuits all is connected with the N of electrical network, the other end respectively with the A phase of electrical network, B mutually and the C phase.
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.
Compared with prior art, the mode that the utility model is gathered by dividing potential drop, can gather the voltage data on each phase circuit of mains supply side fast and accurately, making electric energy data check instrument can data check electric weight, analyzes and the unusual reason of definite line loss.
Description of drawings
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
A kind of voltage sampling circuit, this circuit is connected the supply side of electrical network, gather voltage and be delivered to the computation chip that electric energy data is checked instrument, its concrete circuit structure as shown in Figure 1, 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 R1, sampling resistor R2, first capacitor C 1 and second capacitor C 2, described divider resistance R1 and sampling resistor R2 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 R1 and sampling resistor R2, and an end leads to computation chip as the voltage sample lead-out terminal.
The mode that this circuit is gathered by dividing potential drop can be gathered the voltage data on each phase circuit of mains supply side fast and accurately, and making electric energy data check instrument can data check electric weight, analyzes and the unusual reason of definite line loss.

Claims (2)

1. an electric energy data is checked the voltage sampling circuit of instrument, this voltage sampling circuit is connected the supply side of electrical network, gather voltage and be delivered to the computation chip that electric energy data is checked 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 all is connected with the N of electrical network, the other end respectively with the A phase of electrical network, B mutually and the C phase.
2. a kind of electric energy data according to claim 1 is checked the voltage sampling circuit of instrument, it is characterized in that, 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.
CN 201320128732 2013-03-20 2013-03-20 A voltage sampling circuit of an electric energy data verifying tool Active CN203224549U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320128732 CN203224549U (en) 2013-03-20 2013-03-20 A voltage sampling circuit of an electric energy data verifying tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320128732 CN203224549U (en) 2013-03-20 2013-03-20 A voltage sampling circuit of an electric energy data verifying tool

Publications (1)

Publication Number Publication Date
CN203224549U true CN203224549U (en) 2013-10-02

Family

ID=49251551

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320128732 Active CN203224549U (en) 2013-03-20 2013-03-20 A voltage sampling circuit of an electric energy data verifying tool

Country Status (1)

Country Link
CN (1) CN203224549U (en)

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