CN203838329U - Power consumption tester for voltage line of electric energy meter - Google Patents
Power consumption tester for voltage line of electric energy meter Download PDFInfo
- Publication number
- CN203838329U CN203838329U CN201420160665.4U CN201420160665U CN203838329U CN 203838329 U CN203838329 U CN 203838329U CN 201420160665 U CN201420160665 U CN 201420160665U CN 203838329 U CN203838329 U CN 203838329U
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- power consumption
- electric energy
- energy meter
- mcu
- module
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- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 16
- 230000003750 conditioning effect Effects 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004364 calculation method Methods 0.000 description 5
- 238000004422 calculation algorithm Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Abstract
The utility model discloses a power consumption tester for a voltage line of an electric energy meter. The power consumption tester comprises a current transformer, an operation amplifier, a multifunctional data acquisition module, a signal coupling conditioning module, a control module, an MCU, a GPRS communication module and a monitoring center PC. The power consumption tester is realized by arranging a detection circuit for testing power consumption in a control circuit system instead of employing a special electricity calculating chip, and combines current effective value sampling software algorithm. The power consumption tester solves the problem that a conventional routine testing apparatus is large in size, high in development cost, low in test efficiency and poor in wiring and installation flexibility.
Description
Technical field
The utility model belongs to power instrument detection field, refers more particularly to a kind of voltage circuit power consumption test implementation of electric energy meter.
Background technology
Electric energy meter is as the instrument of electric energy metrical, and itself also has power consumption.The power consumption of electric energy meter refers to electric energy meter in use, the power that electric energy meter self need to consume.In the various standards of electric energy meter and vertification regulation, there is electric energy meter power consumption test experimental project.
In electric energy meter calibrating apparatus, conventionally need corresponding control chip and circuit to complete related experiment, and carry out analytical calculation.The power consumption test of electric energy meter has the power consumption test of voltage circuit and the power consumption test of current circuit.In the various vertification regulations of electric energy meter, all have regulation, electric energy meter, under reference voltage and reference temperature, reference frequency condition, is tested active power and the applied power consumption of each voltage circuit.
The measurement circuit design of power consumption test, in control circuit system, and is not adopted to special-purpose electric energy computing chip.Cost of development be can reduce, testing efficiency and reliability improved.
Summary of the invention
The technical problems to be solved in the utility model is: voltage circuit power consumption test device and implementation that a kind of electric energy meter is provided, the utility model designs the device of power consumption test in control circuit system, and do not adopt special-purpose electric energy computing chip, and in conjunction with current effective value sampling software algorithm.Solved that conventional sense device volume is large, cost of development is too high, testing efficiency is lower, the poor problem of wiring Installation Flexibility.
Problem to be solved in the utility model is achieved by the following technical solution.
A kind of voltage circuit power consumption test device of electric energy meter, the utility model is characterised in that, this device comprises voltage circuit current value, current transformer, amplifier, simultaneously sampling multi-function card, signal coupling conditioning module, control module, MCU, GPRS communication module, monitoring center's PC; Wherein current transformer, amplifier, simultaneously sampling multi-function card, signal coupling conditioning module, control module, MCU, GPRS communication module, monitoring center's PC sequentially connect; Wherein,
Current transformer sampled voltage line electricity flow valuve, and through amplifier amplifying signal; Simultaneously sampling multi-function card reads the test data of tested electric energy meter, delivers to signal coupling conditioning module and processes; Signal coupling conditioning module realizes signal by instruction conditioning and anti-interference inhibition; Control module is controlled tested electric energy meter and is started, closes or arrange hardware effort state; The collection of MCU settling signal, processing, demonstration, storage, transmission, the input pin of built-in ADC; GPRS communication module: be connected with MCU, MCU sends to monitoring center's PC by the data of handling by GPRS module; Monitoring center's PC sends instruction by GPRS communication module is long-range to MCU, realizes the parameters remote setting of field instrumentation.
Amplifier can be single amplifier or double operational; MCU should at least have 6 16 bit timing devices, and 12 analog to digital converters and 7 communication interfaces, meet power consumption test and the demand in electric energy meter calibrating apparatus; MCU communicates by letter by GPRS, power consumption test when can carry out one or more electric energy meter; This device designs in control circuit system, and does not adopt special-purpose electric energy computing chip.
Current value on voltage circuit is to sample by current transformer, by amplifier, sampled signal is amplified to appropriate value, then is input to the inside ADC of MCU, by main control chip, calculates current value, and then obtains voltage circuit power consumption; Wherein,
(1) computational algorithm of current effective value on voltage circuit
Input pin by the built-in ADC of the current sampling signal Isin input MCU in Fig. 1, carries out fixed frequency sampling, each periodic sampling N some X
n, deduct the DC component D that level lifting is introduced, ask its root mean square to be current effective value.Algorithmic formula:
In like manner, calculate the voltage effective value on current circuit;
(2) voltage and current phase angle algorithm
Voltage signal, by zero cross detection circuit, is changed out to the same-phase square wave of voltage; Current sampling signal on voltage circuit is passed through to zero cross detection circuit simultaneously, change out the same-phase square wave of electric current.Two square-wave signals are passed through respectively to the built-in ADC of MCU, and N the X that sample out respectively
nand Y
npoint, more respectively to X
nand Y
nat 50Hz place, carry out DFT calculating, calculate voltage and current phase place separately, their phase place is done to difference and be phase angle
(3), the power consumption calculation on voltage circuit
According to the conventional formula S of apparent power consumption
1=U
1* I
1, and the conventional formula of meritorious power consumption calculation
can calculate.
Compared with prior art, the beneficial effects of the utility model are:
One, the construction cycle that shortens device is saved cost, realizes this locality of field data and processes, and result teletransmission, improves staff's work efficiency;
Two, MCU communicates by letter by GPRS, can carry out the power consumption test of many electric energy meters simultaneously, and testing efficiency is high.In addition, realize the automatic test of electric energy meter power consumption, also improved test speed and reliability.
Accompanying drawing explanation
Fig. 1 is structural framing figure of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, content of the present utility model is described in further detail.
A voltage circuit power consumption test device for electric energy meter, the utility model comprises current transformer 02, amplifier 03, simultaneously sampling multi-function card 04, signal coupling conditioning module 05, control module 06, MCU07, GPRS communication module 08, monitoring center's PC 09; Wherein current transformer 02, amplifier 03, simultaneously sampling multi-function card 04, signal coupling conditioning module 05, control module 06, MCU07, GPRS communication module 08, monitoring center's PC sequentially connect; Wherein,
Current transformer 02 sampled voltage line electricity flow valuve 01, and through amplifier 03 amplifying signal;
Simultaneously sampling multi-function card 04: read the test data of tested electric energy meter, deliver to signal coupling conditioning module and process;
Signal coupling conditioning module 05: realize signal by instruction conditioning and anti-interference inhibition;
Control module 06: control tested electric energy meter and start, close or arrange hardware effort state;
MCU07: the collection of settling signal, processing, demonstration, storage, transmission, the input pin of built-in ADC;
GPRS communication module 08: be connected with MCU07, MCU sends to monitoring center's PC 09 by the data of handling by GPRS module;
Monitoring center's PC 09: send instruction by GPRS communication module 08 is long-range to MCU07, realize the parameters remote setting of field instrumentation.
The utility model amplifier 03 is single amplifier or double operational.
The utility model MCU07 should at least have 6 16 bit timing devices, and 12 analog to digital converters and 7 communication interfaces, meet power consumption test and the demand in electric energy meter calibrating apparatus.
The utility model MCU07 communicates by letter by GPRS, power consumption test when can carry out one or more electric energy meter.
This device designs in control circuit system, and does not adopt special-purpose electric energy computing chip.
Current value on voltage circuit is to sample by current transformer, by amplifier, sampled signal is amplified to appropriate value, then is input to the inside ADC of MCU, by main control chip, calculates current value, and then obtains voltage circuit power consumption; Wherein,
(1) computational algorithm of current effective value on voltage circuit
Input pin by the built-in ADC of the current sampling signal Isin input MCU in Fig. 1, carries out fixed frequency sampling, each periodic sampling N some X
n, deduct the DC component D that level lifting is introduced, ask its root mean square to be current effective value.Algorithmic formula:
In like manner, calculate the voltage effective value on current circuit;
(2) voltage and current phase angle algorithm
Voltage signal, by zero cross detection circuit, is changed out to the same-phase square wave of voltage; Current sampling signal on voltage circuit is passed through to zero cross detection circuit simultaneously, change out the same-phase square wave of electric current.Two square-wave signals are passed through respectively to the built-in ADC of MCU, and N the X that sample out respectively
nand Y
npoint, more respectively to X
nand Y
nat 50Hz place, carry out DFT calculating, calculate voltage and current phase place separately, their phase place is done to difference and be phase angle
(3), the power consumption calculation on voltage circuit
According to the conventional formula S of apparent power consumption
1=U
1* I
1, and the conventional formula of meritorious power consumption calculation
can calculate.
Claims (4)
1. the voltage circuit power consumption test device of an electric energy meter, it is characterized in that, this device comprises current transformer (02), amplifier (03), simultaneously sampling multi-function card (04), signal coupling conditioning module (05), control module (06), MCU(07), GPRS communication module (08), monitoring center's PC (09); Wherein current transformer (02), amplifier (03), simultaneously sampling multi-function card (04), signal coupling conditioning module (05), control module (06), MCU(07), GPRS communication module (08), monitoring center's PC sequentially connect; Wherein,
Current transformer (02) sampled voltage line electricity flow valuve (01), and through amplifier (03) amplifying signal;
Simultaneously sampling multi-function card (04): read the test data of tested electric energy meter, deliver to signal coupling conditioning module and process;
Signal coupling conditioning module (05): realize signal by instruction conditioning and anti-interference inhibition;
Control module (06): control tested electric energy meter and start, close or arrange hardware effort state;
MCU(07): the collection of settling signal, processing, demonstration, storage, transmission, the input pin of built-in ADC;
GPRS communication module (08): with MCU(07) be connected, MCU sends to monitoring center's PC (09) by the data of handling by GPRS module;
Monitoring center's PC (09): long-range to MCU(7 by GPRS communication module (08)) send instruction, realize the parameters remote setting of field instrumentation.
2. the voltage circuit power consumption test device of a kind of electric energy meter according to claim 1, is characterized in that, amplifier (03) is single amplifier or double operational.
3. the voltage circuit power consumption test device of a kind of electric energy meter according to claim 1, is characterized in that, MCU(07) should at least have 6 16 bit timing devices, 12 analog to digital converters and 7 communication interfaces.
4. the voltage circuit power consumption test device of a kind of electric energy meter according to claim 1, is characterized in that, MCU(07) by GPRS, communicate by letter, and power consumption test when can carry out one or more electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420160665.4U CN203838329U (en) | 2014-04-03 | 2014-04-03 | Power consumption tester for voltage line of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420160665.4U CN203838329U (en) | 2014-04-03 | 2014-04-03 | Power consumption tester for voltage line of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203838329U true CN203838329U (en) | 2014-09-17 |
Family
ID=51516153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420160665.4U Expired - Lifetime CN203838329U (en) | 2014-04-03 | 2014-04-03 | Power consumption tester for voltage line of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203838329U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913718A (en) * | 2014-04-03 | 2014-07-09 | 云南电力试验研究院（集团）有限公司电力研究院 | Device for testing power consumption of voltage circuit of electric energy meter |
| CN112269053A (en) * | 2020-09-18 | 2021-01-26 | 苏州浪潮智能科技有限公司 | Device and method for simultaneously detecting power consumption of multiple PSUs of multiple servers |
-
2014
- 2014-04-03 CN CN201420160665.4U patent/CN203838329U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913718A (en) * | 2014-04-03 | 2014-07-09 | 云南电力试验研究院（集团）有限公司电力研究院 | Device for testing power consumption of voltage circuit of electric energy meter |
| CN112269053A (en) * | 2020-09-18 | 2021-01-26 | 苏州浪潮智能科技有限公司 | Device and method for simultaneously detecting power consumption of multiple PSUs of multiple servers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |