CN109856588A - It is a kind of to meet on-line testing process energy data lossless digital DC electric energy meter and field calibration system - Google Patents
It is a kind of to meet on-line testing process energy data lossless digital DC electric energy meter and field calibration system Download PDFInfo
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- CN109856588A CN109856588A CN201910153216.4A CN201910153216A CN109856588A CN 109856588 A CN109856588 A CN 109856588A CN 201910153216 A CN201910153216 A CN 201910153216A CN 109856588 A CN109856588 A CN 109856588A
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- 238000012360 testing method Methods 0.000 title claims description 18
- 238000005070 sampling Methods 0.000 claims abstract description 41
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- 238000001514 detection method Methods 0.000 claims abstract description 4
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Abstract
本发明公开了一种满足在线校验过程电能数据无损的数字直流电能表及现场校验系统，数字直流电能表上设有数据转发装置开关、信号处理单元，数据转发装置开关包括采样数据接收端、信号处理单元输出端以及现场校验仪输出端，信号处理单元输出端与信号处理单元连接，系统还包括有现场校检仪，现场校检仪上一端与数据转发装置开关连接，另一端用于检测数字直流电能表上的脉冲指示灯。本申请通过改造数字直流电能表，使其能在作检测工作的同时，为现场校验仪供给最小输出功率，进而实现在现场校验过程中无需中断被试数字电能表接收的采样信号，防止被试电能表在现场校验过程中短暂停运而损失电能数据，提高电能计量和设备损耗能效分析的准确性。
The invention discloses a digital direct current electric energy meter and an on-site calibration system that satisfy the loss of electric energy data in an on-line calibration process. The digital direct current electric energy meter is provided with a data transfer device switch and a signal processing unit, and the data transfer device switch includes a sampling data receiving end , the output end of the signal processing unit and the output end of the on-site calibrator. The output end of the signal processing unit is connected with the signal processing unit. The system also includes an on-site calibrator. It is used to detect the pulse indicator on the digital DC energy meter. In the present application, by transforming the digital DC electric energy meter, it can supply the minimum output power for the field calibrator while performing the detection work, so as to realize that the sampling signal received by the tested digital electric energy meter does not need to be interrupted during the field calibration process, preventing the During the on-site calibration process, the tested electric energy meter loses electric energy data due to short-term operation, which improves the accuracy of electric energy measurement and energy efficiency analysis of equipment loss.
Description
Technical field
The present invention relates to detection the field of test technology, and in particular to a kind of to meet on-line testing process energy data lossless
Digital DC electric energy meter and field calibration system.
Background technique
It is substantially data processing or calculator to digitalized electrical energy meter, any one imparts the calculating equipment of measurement unit
It should be that a measurement instrument, as soon as being exactly an electric energy metering device, is deposited after digitalized electric energy calculator imparts " kWh " unit
In " a tracing to the source " problem.According to concept of tracing to the source, digitalized electrical energy meter should have the comparativity with higher level's electric energy standard.
Digitalized electrical energy meter directly receives the electronic mutual inductor sampled data of combining unit upload, and tested electric energy meter is connecing
It receives after the data frame that combining unit sending module issues, tested magnitude is calculated by electric energy meter internal module, it should
Magnitude is sent into pulse collection module and handles and analyze compared with the progress repeatedly of the data of standard electric energy meter, passes through accumulative averaging
Method obtains accurate measurement error.
Digitalized electrical energy meter installation needs periodically to carry out field test to it at the scene afterwards, shows with traditional analog formula electric energy
Examine the difference is that digitalized electrical energy meter received signal be digital quantity, at the scene in checking procedure in order to standard electric
Energy table, which is compared, needs short interruption to be tested the received sampled signal of digital electricity meter, and subject electric energy meter is caused to verify at the scene
In the process it is of short duration stoppage in transit and lose part energy data, seriously affect the accuracy and equipment loss Energy Efficiency Analysis of electrical energy measurement.
Summary of the invention
In view of the deficiencies of the prior art, the present invention, which provides, a kind of meets the lossless number of on-line testing process energy data
Direct current energy meter and field calibration system.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of to meet the lossless digital DC electric energy meter of on-line testing process energy data, digital DC electric energy meter is equipped with
Data forwarding device switch, signal processing unit and pulse indicator light, the data forwarding device switch are opened so that number
Direct current energy meter enters live school inspection operating mode, is equipped with current-voltage sampling data receiver in the data forwarding device switch
End, current-voltage sampling data signal processing unit output end and current-voltage sampling data on-site calibrator output end, institute
Current-voltage sampling data signal processing unit output end is stated to connect with signal processing unit.
It is a kind of to meet the lossless field calibration system of on-line testing process energy data, including above-mentioned digital DC electric energy
Table further includes having live checking instrument, the scene checking instrument be equipped with live checking instrument current-voltage sampling data receiver and
It is tested pulse receiving end, the current-voltage sampling data on-site calibrator output end and live checking instrument current-voltage sampling number
It is connected according to receiving end, the subject pulse receiving end is used to detect the pulse indicator light on digital direct current energy meter.
Further, the output energy of the current-voltage sampling data signal processing unit output end is not less than at signal
It manages the minimum of unit and receives energy.
Further, the output energy of the current-voltage sampling data on-site calibrator output end is not less than field-checking
The minimum of instrument receives energy.
Further, the output energy of the current-voltage sampling data signal processing unit output end is adopted for Current Voltage
The 60% of sample data receiver input energy, the output energy of the current-voltage sampling data on-site calibrator output end are electricity
Galvanic electricity presses the 40% of sampled data receiving end input energy.
Compared with the prior art, the invention has the following advantages:
The application can be supplied by transformation digital DC electric energy meter while making detection work for on-site calibrator
To minimum output power, and then realize without interrupting the subject received sampled signal of digital electricity meter in checking procedure at the scene,
Prevent subject electric energy meter at the scene in checking procedure of short duration stoppage in transit and lose part energy data, effectively improve electrical energy measurement and set
The accuracy of standby loss Energy Efficiency Analysis.
Detailed description of the invention
Fig. 1 is that this meets the lossless digital DC electric energy meter structure schematic diagram of on-line testing process energy data；
Fig. 2 is that this meets the structural schematic diagram of the lossless field calibration system of on-line testing process energy data；
Description of symbols: 1, digital DC electric energy meter；2, on-site calibrator；21, live checking instrument current-voltage sampling
Data receiver；22, it is tested pulse receiving end；3, signal processing unit；4, data forwarding device switchs；41, Current Voltage is adopted
Sample data signal processing unit output end；42, current-voltage sampling data receiver；43, current-voltage sampling data scene school
Test instrument output end；5, pulse indicator light；6, combining unit.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment
As shown in Figure 1, a kind of meet the lossless digital DC electric energy meter of on-line testing process energy data, digital direct galvanic electricity
Can table 1 be equipped with data forwarding device switch 4, signal processing unit 3 and pulse indicator light 5,4 dozens, data forwarding device switch
It opens so that digital DC electric energy meter 1 enters live school and examines operating mode, data forwarding device switch 4 is closed so that digital direct galvanic electricity
Energy table 1 enters conventional operating mode, and current-voltage sampling data receiver 42, electric current electricity are equipped in data forwarding device switch 4
Press sampled data signal processing unit output end 41 and current-voltage sampling data on-site calibrator output end 43, Current Voltage
Sampled data signal processing unit output end 41 is connect with signal processing unit 3.
As shown in Fig. 2, a kind of meet the lossless field calibration system of on-line testing process energy data, including above-mentioned number
Word direct current energy meter 1 further includes having live checking instrument, and live checking instrument is equipped with live checking instrument current-voltage sampling data and connects
Receiving end 21 and subject pulse receiving end 22, current-voltage sampling data on-site calibrator output end 43 and live checking instrument electric current electricity
Sampled data receiving end 21 is pressed to connect, subject pulse receiving end 22 is used to detect the pulse indicator light on digital direct current energy meter 1
5, current-voltage sampling data receiver 42 is used to receive the fan-out capability of combining unit 6, to be examined using digital DC electric energy meter 1
Survey the numerical value of combining unit 6.
The parameter of the digital DC electric energy meter 1 wherein used in the present embodiment are as follows: sampling value signal minimal detectable power is
1.6dBm, data forwarding device light energy forward efficiency under conventional operating mode is 100%, and data forwarding device is in verification work
Light energy forward efficiency is 60% under operation mode, and data forwarding device output light energy forward efficiency under verifying work mode is
40%；The parameter of on-site calibrator 2 are as follows: sampling value signal minimal detectable power is 1.45dBm, and standard signal exports minimum power
For 30dBm, it is light pulse that pulse, which receives mode,.
The minimum for receiving power and on-site calibrator 2 in order to meet the minimum of digital DC electric energy meter 1 receives power, electricity
Galvanic electricity presses the output energy of sampled data signal processing unit output end 41 to receive energy not less than the minimum of signal processing unit 3
And the output energy of current-voltage sampling data on-site calibrator output end 43 receives energy not less than the minimum of on-site calibrator 2
Amount, wherein the conversion formula of power and energy is X mW=10*lgX dBm.
In conclusion the output energy of setting current-voltage sampling data signal processing unit output end 41 is Current Voltage
The output energy of the 60% of 42 input energy of sampled data receiving end, current-voltage sampling data on-site calibrator output end 43 is
The 40% of 42 input energy of current-voltage sampling data receiver.
By taking common minimum output end real output is the combining unit of 20dBm as an example (energy 100mW,
Energy is 100%, calculation: 100mW=10*lg100=20dBm), the verifying work mould at the scene of digital DC electric energy meter 1
Under formula, power that current-voltage sampling data signal processing unit output end 41 can export be 17.8dBm (energy 60mW, i.e.,
Energy loss 40%, calculation: 60mW=10*lg60=17.8dBm) signal, signal processing unit 3 received signal
Greater than 1 minimal detectable power value 16dBm of digital DC electric energy meter, (energy of energy 40mW, i.e., minimum reception 40% can works
Make, calculation: 40mW=10*lg40=16dBm), it is able to satisfy the requirement of 1 signal processing unit 3 of digital DC electric energy meter；Electricity
It is about that (energy 40mW, i.e. energy have lost 16dBm that galvanic electricity, which presses 43 energy output power of sampled data on-site calibrator output end,
60%, calculation: 40mW=10*lg40=16dBm) signal, live checking instrument current-voltage sampling data receiver 21
Received signal is greater than 2 minimal detectable power value 14.5dBm of on-site calibrator (energy 30mW, i.e., the energy of minimum reception 30%
Amount can work, calculation: 30mW=10*lg30=14.78dBm), it is able to satisfy the requirement of the normal work of on-site calibrator 2.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (5)
1. a kind of meet the lossless digital DC electric energy meter of on-line testing process energy data, it is characterised in that: the digital direct
It flows electric energy meter (1) and is equipped with data forwarding device switch (4), signal processing unit (3) and pulse indicator light (5), the number
It is opened according to retransmission unit switch (4) so that digital DC electric energy meter (1) enters live school and examines operating mode, the data forwarding dress
It sets and is equipped with current-voltage sampling data receiver (42), current-voltage sampling data signal processing unit output end in switch (4)
(41) and current-voltage sampling data on-site calibrator output end (43), the current-voltage sampling data signal processing unit
Output end (41) is connect with signal processing unit (3).
2. a kind of meet the lossless field calibration system of on-line testing process energy data, including the number described in claim 1
Word direct current energy meter (1), it is characterised in that: further include having live checking instrument, the scene checking instrument is equipped with live checking instrument
Current-voltage sampling data receiver (21) and subject pulse receiving end (22), the current-voltage sampling data on-site calibrator
Output end (43) is connect with live checking instrument current-voltage sampling data receiver (21), and the subject pulse receiving end (22) is used
Pulse indicator light (5) on the digital direct current energy meter (1) of detection.
3. according to claim 2 meet the lossless field calibration system of on-line testing process energy data, feature exists
In: the output energy of the current-voltage sampling data signal processing unit output end (41) is not less than signal processing unit (3)
Minimum receive energy.
4. according to claim 2 meet the lossless field calibration system of on-line testing process energy data, feature exists
In: the output energy of the current-voltage sampling data on-site calibrator output end (43) is most not less than on-site calibrator (2)
Small reception energy.
5. described meeting the lossless live school of on-line testing process energy data according to claim 3 or claim 4 are any
Check system, it is characterised in that: the output energy of the current-voltage sampling data signal processing unit output end (41) is electric current
The 60% of voltage sample data receiver (42) input energy, the current-voltage sampling data on-site calibrator output end (43)
Output energy be current-voltage sampling data receiver (42) input energy 40%.
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| CN201910153216.4A CN109856588A (en) | 2019-02-28 | 2019-02-28 | It is a kind of to meet on-line testing process energy data lossless digital DC electric energy meter and field calibration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505612A (en) * | 2020-10-26 | 2021-03-16 | 青岛鼎信通讯股份有限公司 | Standard meter electric energy pulse output method applied to electric energy meter calibrating device |
| CN112506891A (en) * | 2020-11-17 | 2021-03-16 | 贵州电网有限责任公司 | Index data traceability model construction method, system and model thereof |
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Application publication date: 20190607 |