CN207965122U - High-voltage electric energy meter metering plate remote online check system - Google Patents
High-voltage electric energy meter metering plate remote online check system Download PDFInfo
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- CN207965122U CN207965122U CN201820488663.6U CN201820488663U CN207965122U CN 207965122 U CN207965122 U CN 207965122U CN 201820488663 U CN201820488663 U CN 201820488663U CN 207965122 U CN207965122 U CN 207965122U
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Abstract
The utility model is related to electric energy metering device calibration technology fields；More particularly to a kind of high-voltage electric energy meter metering plate remote online check system, including by school high-voltage electric energy meter, reference signal generator, wireless transmission unit and main website, it is described by pre-buried metering plate A and metering plate B in the high-voltage electric energy meter of school, high pressure sensor is respectively connected to metering plate A and metering plate B by measuring switching switch, reference signal generator is respectively connected to metering plate A and metering plate B by verifying switching switch, and reference signal generator, metering plate A and metering plate B are connected by wireless transport module with main website respectively.The utility model, without having a power failure, can at any time be verified according to vertification regulation on-line calibration high-voltage electric energy meter, substantially prolong the periodic calibration time of high-voltage electric energy meter, save a large amount of manpower and materials.
Description
Technical field
The utility model is related to electric energy metering device calibration technology fields；It is remote more particularly to a kind of high-voltage electric energy meter metering plate
Journey on-line testing system.
Background technology
Conventional high-tension electric energy metering device uses more electromagnetic potential transformers+more electromagnetic current transducer+electricity
The compositions such as energy table, there are easy ferromagnetic resonance, safety is poor, itself energy-consuming consumptive material is high, can not prevent stealing electricity phenomenon, error characteristics become
Change big and is not easy the problems such as determining and defect.High-voltage electric energy meter is by high-voltage voltage sensors, high-voltage current sensor, high-pressure source removing
The communication units such as device, Intelligent electric-energy metering plate, GPRS, intelligent metering software etc. carry out integrated design, are directly accessed high pressure
Circuit, standard that is safe and reliable, easily realizing high-voltage electric energy measurement and the electric parameters such as high voltage, high current, high-power
Really measurement and teletransmission, solve the above problem, but this brings difficulty to the periodic calibration of high-voltage electric energy meter metering plate well.
Trouble is removed and dismounts since high-voltage electric energy meter integrative installation technology can only have a power failure at high-pressure side, periodic calibration.And
In requirement of the power grid to power supply quality reliability, do not allow frequency of power cut too many.Although sensor type high tension electricity energy table is in electric power
Commercially available relatively broad popularization, but its large-scale application is also because periodic calibration is restricted.In recent years, although occurring
The research of some high-voltage electric-energy meter on-line testing technologies, but can not test to metering plate by existing regulation, only it is
The error of device is detected under actual load, at all not counting periodic calibration.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is that：It is long-range to provide a kind of high-voltage electric energy meter metering plate
On-line testing system, without having a power failure, can at any time verify according to vertification regulation on-line calibration high-voltage electric energy meter, substantially prolong height
The periodic calibration time for pressing electric energy meter, save a large amount of manpower and materials.
The utility model is that technical solution used by solving its technical problem is：
The high-voltage electric energy meter metering plate remote online check system, including occurred by school high-voltage electric energy meter, standard signal
Device, wireless transmission unit and main website, it is described to be passed through by pre-buried metering plate A and metering plate B, high pressure sensor in the high-voltage electric energy meter of school
Metering switching switch is respectively connected to metering plate A and metering plate B, and reference signal generator is separately connected by verifying switching switch
To metering plate A and metering plate B, reference signal generator, metering plate A and metering plate B pass through wireless transport module and main website respectively
It is connected.
For the utility model metering plate B for measuring, metering plate A is used for on-line testing.When normal work, metering switching switch
Metering plate B is connected, when needing verification, metering switches switching to metering plate A, and verification switching switch on-off to metering plate B is main
It stands and sends check command to reference signal generator, reference signal generator exports corresponding verification waveform signal after receiving order
To metering plate B, the electrical energy pulse that metering plate B is generated is sent to main website, the electric energy arteries and veins that main website will receive by wireless transport module
Punching is compared with benchmark electric energy, and the relative error of metering plate B is calculated by error op, after verification, metering plate A disconnect and
The connection of high pressure sensor is left unused spare, metering plate B disconnect the connection with reference signal generator and with high pressure sensor phase
Even, metering plate A and metering plate B has good luck during main website calculates verification, and the difference that metering plate A is subtracted to metering plate B is added to
Metering plate B obtains the true of high-voltage electric energy meter and has good luck.
The utility model can realize the online periodic calibration to high-voltage electric energy meter metering plate, without having a power failure, calibrating week
Phase can be configured according to the requirement of regulatory authorities, or so general half a year, for convenience of technical supervision department and higher level
Administrative department grasps the actual use situation of high-voltage electric energy meter in real time, and main website can be that technical supervision department and upper management department are pre-
Communication port is stayed, the data interaction of main website and technical supervision department and upper management department, when necessary, skill are realized by the port
Art superintendent office and upper management department can send the instruction for executing periodic calibration to main website, to carry out week according to demand at any time
Phase examines and determine, and the instruction priority of the transmission of technical supervision department and upper management department is higher than main website, to ensure the safety of data
Secret is technical supervision department and upper management Department formation key.After high-voltage electric energy meter is installed and used, main website is by all previous storage
On-line testing data generation period calibrating go through shoe table, with use for future reference.
Wherein, preferred embodiment is：
The reference signal generator includes the first processing chip, FLASH memory, data storage, second processing core
Piece, first processing chip are connected to main website by wireless transport module, meanwhile, the first processing chip connects FLASH storages
Device and data storage, data storage connect second processing chip, and second processing chip connects D/A digital analog converters.According to
Existing high-voltage electric energy meter calibration regulation, stores the corresponding waveform signal of each calibration order into FLASH memory in advance, at first
Reason chip is used to receive the calibration order of main website transmission, reads signal waveform data, will according to instruction after receiving calibration instruction
Correct Wave data is sent to second processing chip by data storage and carries out output processing, the output of second processing chip
Digital signal is converted to the metering plate progress calibration that analog signal is delivered to connection via D/A digital analog converters, to ensure calibration
Data are accurate, and low-pass filter circuit, filtering interference signals are arranged between D/A digital analog converters and metering plate, and calibration order is pressed
It is arranged according to existing calibration regulation, the computer program of dependence belongs to technology well known to those skilled in the art.
The metering switching switch and verification switching switch can be used IGBT switchings switch and opened from main website to IGBT switchings
It closing to send switching command and realize and switch, the computer program which is relied on belongs to technology well known to those skilled in the art, this
Place is not described in detail；When metering plate B failures, the connection of high-voltage electric energy meter switches to metering plate A, and when interruption maintenance is measured by metering plate A
Current electric quantity switches back into metering plate B again in order to avoid electricity is lost after the completion of repair, and by the stoichiometric number of metering plate A in maintenance process
According to metering plate B is added to, had good luck with obtaining the correct of high-voltage electric energy meter.
The verification switching switch is integrated with by school high-voltage electric energy meter, and school is corresponded on the high voltage electric energy watch shell of school
It tests switching switch and reserves connectivity port, reference signal generator is correspondingly connected with port setting signal connecting line, and standard signal occurs
Device is connected by signal connecting line with connectivity port with by school high-voltage electric energy meter, to reduce being fabricated to by school high-voltage electric energy meter
This, controls ammeter volume, by reference signal generator be arranged to by school high-voltage electric energy meter it is split type, because standard signal occurs
What device was sent is weak electric signal, and connectivity port is also configured as weak electric signal interface, and when needing verification, direct band is electrically accessed standard letter
Number generator, hot line job devoid of risk, without power-off.Reference signal generator can only be to executing verification work by school high-voltage electric energy meter
Make, data cannot be changed, it is ensured that by the real effectiveness of school high-voltage electric energy meter data.
Compared with prior art, the utility model has the advantages that：
The utility model, without having a power failure, can at any time verify, greatly prolong according to vertification regulation on-line calibration high-voltage electric energy meter
Periodic calibration time of high-voltage electric energy meter, save a large amount of manpower and materials.Its re-testing periods can be wanted according to regulatory authorities
It asks and is configured, or so general half a year grasps high voltage electric energy in real time for convenience of technical supervision department and upper management department
The actual use situation of table, main website can be that technical supervision department and upper management department reserve communication port, pass through port reality
The data interaction of existing main website and technical supervision department and upper management department, when necessary, technical supervision department and upper management portion
Men Kexiang main websites send the instruction for executing periodic calibration, to carry out periodic calibration according to demand at any time, technical supervision department and
The instruction priority of the transmission of upper management department is higher than main website, and the safety to ensure data is concealed, be technical supervision department and
Upper management Department formation key.
Description of the drawings
Fig. 1 is 1 schematic diagram of embodiment.
Fig. 2 is reference signal generator structure chart.
Specific implementation mode
The utility model embodiment is described further below in conjunction with the accompanying drawings：
Embodiment 1：
As shown in Figure 1, high-voltage electric energy meter metering plate remote online check system described in the present embodiment, including by school high-voltage electricity
Energy table, reference signal generator, wireless transmission unit and main website, it is described by pre-buried metering plate A and metering in the high-voltage electric energy meter of school
Plate B, high pressure sensor switch switch S1 by metering and are respectively connected to metering plate A and metering plate B, and reference signal generator passes through
Verification switching switch S2 is respectively connected to metering plate A and metering plate B, reference signal generator, metering plate A and metering plate B difference
It is connected with main website by wireless transport module, the present embodiment wireless transport module uses GPRS module.
As shown in Fig. 2, reference signal generator includes the first processing chip, FLASH memory, data storage, second
Processing chip, first processing chip are connected to main website by wireless transport module, meanwhile, the connection of the first processing chip
FLASH memory and data storage, data storage connect second processing chip, and second processing chip connects D/A digital-to-analogues and turns
Parallel operation.The corresponding waveform signal of each calibration order is prestored in FLASH memory, the first processing chip is for receiving main website hair
Signal waveform data is read in the calibration order sent, and after receiving calibration instruction, correct Wave data is passed through number according to instruction
It is sent to second processing chip according to memory and carries out output processing, the digital signal of second processing chip output is via D/A digital-to-analogues
Converter is converted to the metering plate progress calibration that analog signal is delivered to connection, to ensure that calibration data are accurate, in D/A digital-to-analogues turn
Low-pass filter circuit, filtering interference signals are set between parallel operation and metering plate, calibration order is arranged according to existing calibration regulation, according to
Bad computer program belongs to technology well known to those skilled in the art.
The metering switching switch S1 and verification switching switch S2 can be used IGBT switching switches and be cut from main website to IGBT
It changes switch and sends switching command and realize and switch, the computer program which is relied on belongs to skill well known to those skilled in the art
Art is not described in detail herein；When metering plate B failures, the connection of high-voltage electric energy meter switches to metering plate A, by metering plate A when interruption maintenance
Current electric quantity is measured, in order to avoid electricity is lost, metering plate B is switched back into again after the completion of repair, and by the meter of metering plate A in maintenance process
Data accumulation is measured to metering plate B, is had good luck with obtaining the correct of high-voltage electric energy meter.
For the utility model metering plate B for measuring, metering plate A is used for on-line testing.When normal work, metering switching switch
S1 connection metering plate B when needing verification, measure switching switch S1 and switch to metering plate A, verification switching switch S2 switchings to metering
Plate B, main website send check command to reference signal generator, and reference signal generator exports corresponding verification wave after receiving order
For shape signal to metering plate B, electrical energy pulse that metering plate B is generated is sent to main website by wireless transport module, and main website will receive
Electrical energy pulse is compared with benchmark electric energy, and the relative error of metering plate B is calculated by error op, after verification, metering plate A
The connection with high pressure sensor is disconnected, is left unused spare, metering plate B disconnects the connection with reference signal generator and sensed with high pressure
Device is connected, and metering plate A and metering plate B has good luck during main website calculates verification, and the difference that metering plate A is subtracted to metering plate B is tired out
It is added to metering plate B, the true of high-voltage electric energy meter is obtained and has good luck.
To ensure to verify effect, before verifying metering plate B, whether normal, specifically, main website if can first verify metering plate A
Check command is sent to reference signal generator, the corresponding verification waveform signal of output arrives after reference signal generator receives order
Metering plate A exports corresponding standard signal by D/A digital analog converters and starts to measure to metering plate A, metering plate A and by pulse
It is sent to main website by wireless transport module；Main website compares the pulse received and benchmark electric energy, is calculated by error op
The relative error of metering plate A continues metering plate if relative error in normal range (NR), illustrates that metering plate A is working properly
The verification of B.
The utility model realizes the online periodic calibration to high-voltage electric energy meter metering plate through the above steps, without having a power failure,
Its re-testing periods can be configured according to the requirement of regulatory authorities, or so general half a year, for convenience of technical supervision portion
Door and upper management department grasp the actual use situation of high-voltage electric energy meter in real time, and main website can be that technical supervision department and higher level manage
Reason department reserves communication port, and the data interaction of main website and technical supervision department and upper management department is realized by the port,
When necessary, technical supervision department and upper management department can send the instruction for executing periodic calibration to main website, so as to basis at any time
Demand carries out periodic calibration, and the instruction priority of the transmission of technical supervision department and upper management department is higher than main website, to ensure
The safety of data is concealed, is technical supervision department and upper management Department formation key.After high-voltage electric energy meter is installed and used, main website
Shoe table is gone through into the on-line testing data generation period calibrating of all previous storage, with use for future reference.
It is convenient for verification, by reference signal generator and the structure being integrated is set by school high-voltage electric energy meter, needs to verify
When, Zhi Xu main websites send checking command and can perform, without carrying out execute-in-place.
Embodiment 2：
The present embodiment is set as seperated by reference signal generator and by school high-voltage electric energy meter on the basis of embodiment 1
Structure, the verification switching switch S2 are integrated with by school high-voltage electric energy meter, and school is corresponded on the high voltage electric energy watch shell of school
It tests switching switch S2 and reserves connectivity port, reference signal generator is correspondingly connected with port setting signal connecting line, standard signal hair
Raw device is connected by signal connecting line with connectivity port with by school high-voltage electric energy meter, to reduce being fabricated to by school high-voltage electric energy meter
This, controls ammeter volume, by reference signal generator be arranged to by school high-voltage electric energy meter it is split type, because standard signal occurs
What device was sent is weak electric signal, and connectivity port is also configured as weak electric signal interface, and when needing verification, direct band is electrically accessed standard letter
Number generator, hot line job devoid of risk, without power-off.Reference signal generator can only be to executing verification work by school high-voltage electric energy meter
Make, data cannot be changed, it is ensured that by the real effectiveness of school high-voltage electric energy meter data.
Claims (4)
1. a kind of high-voltage electric energy meter metering plate remote online check system, which is characterized in that including by school high-voltage electric energy meter, standard
Signal generator, wireless transmission unit and main website, described by pre-buried metering plate A and metering plate B in the high-voltage electric energy meter of school, high pressure passes
Sensor is respectively connected to metering plate A and metering plate B by measuring switching switch, and reference signal generator is by verifying switching switch
It is respectively connected to metering plate A and metering plate B, reference signal generator, metering plate A and metering plate B are respectively by being wirelessly transferred mould
Block is connected with main website.
2. high-voltage electric energy meter metering plate remote online check system according to claim 1, which is characterized in that the standard
Signal generator includes the first processing chip, FLASH memory, data storage, second processing chip, the first processing core
Piece is connected to main website by wireless transport module, meanwhile, the first processing chip connects FLASH memory and data storage, number
Second processing chip is connected according to memory, second processing chip connects D/A digital analog converters.
3. high-voltage electric energy meter metering plate remote online check system according to claim 1, which is characterized in that the metering
IGBT switching switches can be used in switching switch and verification switching switch.
4. high-voltage electric energy meter metering plate remote online check system according to claim 1, which is characterized in that the verification
Switching switch is integrated with by school high-voltage electric energy meter, is lingered in advance by corresponding verification switching switch on the high voltage electric energy watch shell of school
Connect port, reference signal generator is correspondingly connected with port setting signal connecting line, reference signal generator and by school high voltage electric energy
Table is connected by signal connecting line with connectivity port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488663.6U CN207965122U (en) | 2018-04-04 | 2018-04-04 | High-voltage electric energy meter metering plate remote online check system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488663.6U CN207965122U (en) | 2018-04-04 | 2018-04-04 | High-voltage electric energy meter metering plate remote online check system |
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| Publication Number | Publication Date |
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| CN207965122U true CN207965122U (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820488663.6U Active CN207965122U (en) | 2018-04-04 | 2018-04-04 | High-voltage electric energy meter metering plate remote online check system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490382A (en) * | 2018-04-04 | 2018-09-04 | 山东计保电气有限公司 | High-voltage electric energy meter metering plate remote online method of calibration and system |
| CN110703182A (en) * | 2019-11-08 | 2020-01-17 | 南京沁恒微电子股份有限公司 | Wireless intelligent electric energy meter and production line calibration implementation method thereof |
-
2018
- 2018-04-04 CN CN201820488663.6U patent/CN207965122U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490382A (en) * | 2018-04-04 | 2018-09-04 | 山东计保电气有限公司 | High-voltage electric energy meter metering plate remote online method of calibration and system |
| CN108490382B (en) * | 2018-04-04 | 2024-03-15 | 山东计保电气有限公司 | Remote online verification method and system for high-voltage electric energy meter measuring plate |
| CN110703182A (en) * | 2019-11-08 | 2020-01-17 | 南京沁恒微电子股份有限公司 | Wireless intelligent electric energy meter and production line calibration implementation method thereof |
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