CN112363104A - Online calibrator for electric energy meter - Google Patents
Online calibrator for electric energy meter Download PDFInfo
- Publication number
- CN112363104A CN112363104A CN202011413840.2A CN202011413840A CN112363104A CN 112363104 A CN112363104 A CN 112363104A CN 202011413840 A CN202011413840 A CN 202011413840A CN 112363104 A CN112363104 A CN 112363104A
- Authority
- CN
- China
- Prior art keywords
- module
- electric energy
- loop
- calibration
- online
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract description 40
- 238000012795 verification Methods 0.000 claims description 60
- 230000000737 periodic effect Effects 0.000 claims description 14
- 238000005070 sampling Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Abstract
The invention provides an electric energy meter online calibrator which comprises a signal input/output port, a loop switching module, a calibration module and a communication module, wherein the signal input/output port is electrically connected with a multi-loop switching device, the loop switching module is used for controlling the multi-loop switching device to be switched to different loops connected with the multi-loop switching device so as to obtain electric energy signals of the corresponding loops, the calibration module is used for performing online calibration on the electric energy signals of the different loops, the communication module is used for receiving instructions of a host control module of an upper computer through a communication port, and the electric energy signals comprise voltage signals, current signals and pulse signals. According to the invention, long-term electric energy analysis can be realized only by connecting the equipment once, and single test performed by related personnel who regularly carry the equipment to the field of the power system is avoided, so that the manpower input is effectively reduced, and the stable and normal operation of a power grid meter and the related equipment is favorably ensured.
Description
Technical Field
The invention relates to the technical field of electric energy calibration, in particular to an electric energy meter online calibration instrument.
Background
Operation errors and faults may occur in the long-term operation process of the power grid metering gauge and related equipment, so that the power grid metering gauge and the related equipment need to be checked, operators can quickly, safely and reliably measure the metering gauge errors and wiring errors, and effective basis is provided for the metering staff of the power system to accurately meter and supplement the electric quantity. At present, when the power grid meter and related equipment are verified, related personnel need to regularly carry the equipment to the site of a power system for verification, more manpower needs to be invested, the interval between two adjacent verifications is usually longer, the problem that the equipment is difficult to find and appears between two adjacent verifications is caused, in addition, the wiring terminal of the equipment needs to be plugged and pulled in each verification, the wiring terminal is easy to loosen after a long time, and potential safety hazards exist.
Disclosure of Invention
Accordingly, the present invention is directed to an on-line calibration instrument for an electric energy meter, which overcomes or at least partially solves the above-mentioned problems of the prior art.
The utility model provides an electric energy meter online check gauge, includes signal input/output port, return circuit switching module, check-up module and communication module, signal input/output port is used for being connected with multiloop auto-change over device electricity, return circuit switching module is used for controlling multiloop auto-change over device to switch to the different return circuits rather than being connected in order to obtain the electric energy signal of corresponding return circuit, check-up module is used for carrying out online check-up to the electric energy signal of different return circuits, communication module is used for receiving host computer owner through communication port and controls module instruction, the electric energy signal includes voltage signal, current signal and pulse signal.
Further, the signal input/output port includes a voltage input/output port, a current input/output port, and a pulse input/output port.
Furthermore, the checking module comprises an online checking submodule, and the online checking submodule is used for receiving a checking instruction of the upper computer main control module through the communication module and switching to an online instruction mode to execute the checking instruction.
Further, the online checking sub-module is specifically configured to, in an online instruction mode, send a loop switching instruction to the loop switching module according to the checking instruction to control the multi-loop switching device to switch to a corresponding loop, receive a real-time sampling signal of the corresponding loop from the multi-loop switching device acquired by the loop switching module, perform online checking, and output a checking result to the host computer main control module through the communication module.
Further, the verification module comprises a periodic task submodule, and the periodic task submodule is used for switching to a periodic task instruction mode to perform online verification according to a preset task.
Further, the periodic task sub-module is specifically configured to, in a periodic task instruction mode, regularly send a loop switching instruction to the loop switching module to control the multi-loop switching device to switch to a corresponding loop according to a preset task, receive a real-time sampling signal of the corresponding loop from the multi-loop switching device acquired by the loop switching module, perform online verification, and output a verification result to the host computer main control module through the communication module.
Further, the online verification specifically comprises: and generating a standard pulse signal based on a voltage signal and a current signal in the electric energy signal acquired by sampling the loop in real time, comparing the standard pulse signal with the pulse signal acquired by sampling the loop in real time, and outputting a verification result based on a comparison result.
Further, the loop is a secondary loop.
Furthermore, the verification module further comprises an identification and verification submodule, and the identification and verification submodule is used for carrying out first identification and verification on the upper computer main control module when the verification module is communicated with the upper computer main control module through the communication module for the first time.
Furthermore, the identification and verification sub-module is further used for carrying out second identification and verification on the upper computer main control module when the verification module receives a verification instruction of the upper computer main control module each time.
Compared with the prior art, the invention has the beneficial effects that:
the electric energy meter online checking instrument provided by the invention can be arranged on the site of an electric power system, is connected with different loops through a multi-loop switching device to obtain electric energy signals of the different loops, is subjected to online checking through a checking module, and can also remotely receive a checking instruction of an upper computer main control module to check a specified loop, so that long-term electric energy analysis can be realized only by connecting equipment once, single testing performed by related personnel to the site of the electric power system by regularly carrying the equipment is avoided, the manpower input is effectively reduced, and the stable and normal operation of a power grid metering meter and the related equipment is favorably ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
Fig. 1 is a schematic view of an overall structure of an on-line calibrator for an electric energy meter according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a verification process of the online calibrator for the electric energy meter according to the embodiment of the invention.
In the figure, a signal input/output port 1, a voltage input/output port 11, a current input/output port 12, a pulse input/output port 13, a loop switching module 2, a calibration module 3, a communication module 4, a multi-loop switching device 5 and an upper computer main control module 6 are provided.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to illustrate the invention and not to limit the scope of the invention.
Referring to fig. 1, the invention provides an electric energy meter online calibrator, which comprises a signal input/output port 1, a loop switching module 2, a calibration module 3 and a communication module 4. The signal input/output port 1 is used for electrically connecting with a multi-loop switching device 5. The loop switching module 2 is used for controlling the multi-loop switching device 5 to switch to different loops connected with the multi-loop switching device so as to obtain electric energy signals of the corresponding loops. The checking module 3 is used for carrying out online checking on the electric energy signals of different loops. The communication module 4 is used for receiving instructions of the upper computer main control module 6 through the communication port, and the electric energy signals comprise voltage signals, current signals and pulse signals.
In some embodiments, the electric energy meter online calibrator comprises a housing, wherein a signal input/output port 1 and a communication port are arranged on the surface of the housing, and a loop switching module 2, a calibration module 3 and a communication module 4 are arranged in the housing. The size of casing is 4U, and the degree of depth is no longer than 550mm, makes it can conveniently install in standard measurement screen cabinet. The signal input/output port 1 includes a voltage input/output port 11, a current input/output port 12, and a pulse input/output port 13. A plurality of voltage input/output ports 11 can be arranged, and the distance between the ports is at least 20 mm; the current input/output ports 12 may be provided in plural, and the distance between the ports is at least 45mm, and the distance between the ports is at least 80 mm. The communication port can be one or more of RS-485, RS-232 and Ethernet, and the communication module can also perform data interaction with the upper computer main control module through 4G wireless communication transmission.
As an example, referring to fig. 2, the verification module 3 includes an online verification sub-module, and the online verification sub-module is configured to receive a verification instruction of the upper computer main control module through the communication module 4, and switch to an online instruction mode to execute the verification instruction.
When the online checking submodule is switched to the online instruction mode to execute the checking instruction, the loop switching instruction is sent to the loop switching module 2 according to the checking instruction of the upper computer main control module 6 received by the communication module 4, so that the multi-loop switching device 5 is controlled to be switched to a loop corresponding to the checking instruction, the electric energy signal of the corresponding loop is input to the electric energy meter online checking instrument, online checking is carried out after the multi-loop switching device 5 obtained by the loop switching module 2 receives the real-time sampling signal of the corresponding loop, and the checking result is output to the upper computer main control module 6 through the communication module 4.
In addition, the checking module 3 further comprises a periodic task sub-module, and the periodic task sub-module is used for switching to a periodic task instruction mode to perform online checking according to a preset task.
The user can be according to actual need when deploying the online check gauge of electric energy meter preset and preset task content, and preset task content can include round of patrolling object circuit, round of patrolling cycle, round of patrolling content etc.. When the verification module 3 does not receive the verification instruction issued by the upper computer main control module 6, the periodic task submodule regularly sends a loop switching instruction to the loop switching module 2 according to the preset task content to control the multi-loop switching device to switch to a corresponding loop, receives a real-time sampling signal of the corresponding loop from the multi-loop switching device 5 acquired by the loop switching module 2, performs online verification, and outputs a verification result to the upper computer main control module 6 through the communication module 4.
In the above embodiment, the online verification specifically includes: and generating a standard pulse signal based on a voltage signal and a current signal in the electric energy signal acquired by sampling the loop in real time, comparing the standard pulse signal with the pulse signal acquired by sampling the loop in real time, and outputting a verification result to the upper computer main control module 6 based on a comparison result.
In the above embodiments, the circuits are all secondary circuits.
As an example, when the checking module 3 communicates with the upper computer master control module 6 through the communication module 4 for the first time, the checking module performs a first identification verification on the upper computer master control module 6 through the identification verification sub-module, where the first identification verification specifically is: the identification and verification sub-module initiates a first identification and verification request to the upper computer main control module 6 through the communication module 4, the upper computer main control module 6 extracts a specific value corresponding to the electric energy meter online check meter from the database, the specific value is calculated through an encryption algorithm, the calculation result is sent to the identification and verification sub-module as a communication key, the identification and verification sub-module decrypts the communication key through a decryption algorithm, the decryption result is compared with the specific value of the identification and verification sub-module, if the comparison is passed, the communication module 4 is allowed to establish communication connection with the upper computer main control module 6, and otherwise, the communication connection with the upper computer is disconnected.
In the above embodiment, the specific value stored in the database is input by a user when the electric energy meter online check meter is deployed, the specific value may be a unique identification number of the electric energy meter online check meter, or may be an output result of a plurality of pieces of feature information of the electric energy meter online check meter after being processed by a hash function, and the feature information may be one or more pieces of feature information of the deployment position, a monitoring object, the number of connected loops, the information of connected loops, and the like of the electric energy meter online check meter.
On the basis of the foregoing embodiment, the identification and verification sub-module is further configured to perform second identification and verification on the upper computer main control module 6 when the verification module 3 receives the verification instruction of the upper computer main control module 6 each time, where the second identification and verification specifically is: the identification and verification sub-module initiates a second identification and verification request to the upper computer main control module 6 through the communication module 4, the upper computer main control module 6 acquires current signal information and voltage signal information read from the electric energy meter online check meter at the previous time from a database, and calculates the result through encryption algorithm, sends the calculated result as communication key to the identification and verification submodule, after the identification and verification submodule decrypts the calculated result through decryption algorithm, and processing the current signal information and the voltage signal information obtained by decryption to obtain corresponding pulse signals, comparing the pulse signals with pulse signals in a check result uploaded by the online electric energy meter check meter at the previous time, and if the comparison is passed, allowing the check module 3 to execute a check instruction sent by the upper computer main control module 6, otherwise, not executing the check instruction sent by the upper computer main control module 6 at this time.
Specifically, the identification and verification sub-module does not perform the second identification and verification on the verification instruction sent by the upper computer main control module 6 in the communication connection established with the upper computer main control module 6 after the first identification and verification is completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an electric energy meter online check gauge which characterized in that, includes signal input/output port, return circuit switching module, check module and communication module, signal input/output port is used for being connected with multiloop auto-change over device electricity, return circuit switching module is used for controlling multiloop auto-change over device to switch to the different return circuits rather than being connected in order to obtain the electric energy signal of corresponding return circuit, check module is used for carrying out online check to the electric energy signal of different return circuits, communication module is used for receiving host computer accuse module instruction through communication port, the electric energy signal includes voltage signal, current signal and pulse signal.
2. The on-line calibrator for electric energy meters according to claim 1, wherein the signal input/output ports comprise a voltage input/output port, a current input/output port and a pulse input/output port.
3. The electric energy meter online calibrator according to claim 1, wherein the calibration module comprises an online calibration submodule, and the online calibration submodule is used for receiving a calibration instruction of the upper computer main control module through the communication module and switching to an online instruction mode to execute the calibration instruction.
4. The on-line calibrator for electric energy meters according to claim 3, wherein the on-line calibration submodule is specifically configured to, in an on-line instruction mode, send a loop switching instruction to the loop switching module according to the calibration instruction to control the multi-loop switching device to switch to a corresponding loop, receive a real-time sampling signal of the corresponding loop from the multi-loop switching device acquired by the loop switching module, perform on-line calibration, and output the calibration result to the host computer main control module through the communication module.
5. The on-line calibrator for the electric energy meter according to claim 1, wherein the calibration module comprises a periodic task submodule, and the periodic task submodule is used for switching to a periodic task instruction mode to perform on-line calibration according to a preset task.
6. The on-line calibrator for the electric energy meter according to claim 5, wherein the periodic task sub-module is specifically configured to periodically send a loop switching command to the loop switching module according to a preset task in a periodic task command mode to control the multi-loop switching device to switch to a corresponding loop, receive a real-time sampling signal of the corresponding loop from the multi-loop switching device acquired by the loop switching module, perform on-line calibration, and output a calibration result to the host computer main control module through the communication module.
7. The electric energy meter online calibrator according to any one of claims 1 to 6, wherein the online calibration specifically comprises: and generating a standard pulse signal based on a voltage signal and a current signal in the electric energy signal acquired by sampling the loop in real time, comparing the standard pulse signal with the pulse signal acquired by sampling the loop in real time, and outputting a verification result based on a comparison result.
8. The on-line calibrator for electric energy meters according to claim 7, wherein said loop is a secondary loop.
9. The electric energy meter online calibrator according to claim 1, wherein the calibration module further comprises an identification and verification sub-module, and the identification and verification sub-module is used for performing first identification and verification on the upper computer main control module when the calibration module is communicated with the upper computer main control module through the communication module for the first time.
10. The on-line calibrator for electric energy meters according to claim 9, wherein the identification and verification sub-module is further configured to perform a second identification and verification on the host computer main control module each time the verification module receives a verification instruction from the host computer main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413840.2A CN112363104A (en) | 2020-12-07 | 2020-12-07 | Online calibrator for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413840.2A CN112363104A (en) | 2020-12-07 | 2020-12-07 | Online calibrator for electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112363104A true CN112363104A (en) | 2021-02-12 |
Family
ID=74535994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011413840.2A Pending CN112363104A (en) | 2020-12-07 | 2020-12-07 | Online calibrator for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112363104A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135608A (en) * | 2011-01-29 | 2011-07-27 | 四川电力科学研究院 | Electric energy metering and monitoring system of intelligent gateway |
| CN102809741A (en) * | 2012-08-14 | 2012-12-05 | 河南弘正电气科技有限公司 | Intelligent monitoring and managing information system for electric energy metering devices of substations |
| CN202710744U (en) * | 2012-08-14 | 2013-01-30 | 河南弘正电气科技有限公司 | Main station structure of station electrical energy metering device monitoring management system |
| CN103236921A (en) * | 2013-04-11 | 2013-08-07 | 成都秦川科技发展有限公司 | Information security management module of intelligent ammeter of internet of things |
| WO2014071753A1 (en) * | 2012-11-06 | 2014-05-15 | 国家电网公司 | Electronic transformer calibrator calibration device and method based on digital source |
| CN105319529A (en) * | 2015-12-04 | 2016-02-10 | 国网电力科学研究院武汉南瑞有限责任公司 | System and method for calibrating errors of watt-hour meters |
| CN108241137A (en) * | 2017-12-18 | 2018-07-03 | 海南电网有限责任公司 | A kind of elementary error of combining unit tester is traced to the source device |
-
2020
- 2020-12-07 CN CN202011413840.2A patent/CN112363104A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135608A (en) * | 2011-01-29 | 2011-07-27 | 四川电力科学研究院 | Electric energy metering and monitoring system of intelligent gateway |
| CN102809741A (en) * | 2012-08-14 | 2012-12-05 | 河南弘正电气科技有限公司 | Intelligent monitoring and managing information system for electric energy metering devices of substations |
| CN202710744U (en) * | 2012-08-14 | 2013-01-30 | 河南弘正电气科技有限公司 | Main station structure of station electrical energy metering device monitoring management system |
| WO2014071753A1 (en) * | 2012-11-06 | 2014-05-15 | 国家电网公司 | Electronic transformer calibrator calibration device and method based on digital source |
| CN103236921A (en) * | 2013-04-11 | 2013-08-07 | 成都秦川科技发展有限公司 | Information security management module of intelligent ammeter of internet of things |
| CN105319529A (en) * | 2015-12-04 | 2016-02-10 | 国网电力科学研究院武汉南瑞有限责任公司 | System and method for calibrating errors of watt-hour meters |
| CN108241137A (en) * | 2017-12-18 | 2018-07-03 | 海南电网有限责任公司 | A kind of elementary error of combining unit tester is traced to the source device |
Non-Patent Citations (1)
| Title |
|---|
| 林尔迅: "电能计量装置远程校验系统的实现与应用", 《机电工程技术》, vol. 42, no. 8, pages 140 - 142 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101627520B (en) | Method and apparatus for monitoring an electric load | |
| US9784799B2 (en) | Multi-node synchronous on-site test method | |
| CN103630868A (en) | Remote substation electrical energy metering information detection system | |
| CN203811795U (en) | Remote detection system for electric energy metering information of transformer station | |
| CN101435841A (en) | Test system and method | |
| CN108490382A (en) | High-voltage electric energy meter metering plate remote online method of calibration and system | |
| CN201072597Y (en) | Automatic detection instrument for aviation electronic flight instrument | |
| CN108446197A (en) | A kind of control protection board automatic checkout system and method | |
| CN106990384A (en) | A kind of three-phase electric energy meter false wiring detection means and detection method | |
| CN110942400A (en) | Automatic point aligning method and device for intelligent substation monitoring system | |
| CN108089083A (en) | Alternating-current charging pile detecting system | |
| CN202267716U (en) | Test system of CPU plug-in unit used for relay protection measurement and control apparatus | |
| CN112363104A (en) | Online calibrator for electric energy meter | |
| KR101896548B1 (en) | Wiring connection state detection system of live wire state | |
| CN207133371U (en) | A kind of Portable wind group of motors component capabilities test device | |
| CN201072596Y (en) | Centralized monitoring system for lightning protection facilities | |
| CN113721480B (en) | Nuclear power plant diversified protection signal simulation method and system | |
| KR20120016909A (en) | Event generator test apparatus of rtu in scada system | |
| CN206097639U (en) | Low -pressure measurement trains equipment | |
| CN104502772A (en) | Electrical parameter monitoring device and intelligent switch cabinet | |
| CN115078803A (en) | Distributed radio parameter sampling system and method | |
| CN206193228U (en) | Long -range on -line measuring system of electronic electric energy meter metering performance | |
| CN106770934A (en) | Online monitoring of pollution sources apparatus management/control apparatus and system | |
| CN207965076U (en) | A kind of power supply system AC circuit breaker acting characteristic on-line monitoring analytical equipment | |
| CN206788354U (en) | A kind of metering automation terminal comprehensive test platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |