CN109444785A - A kind of measurement method of digital quantity message accuracy - Google Patents
A kind of measurement method of digital quantity message accuracy Download PDFInfo
- Publication number
- CN109444785A CN109444785A CN201811368134.3A CN201811368134A CN109444785A CN 109444785 A CN109444785 A CN 109444785A CN 201811368134 A CN201811368134 A CN 201811368134A CN 109444785 A CN109444785 A CN 109444785A
- Authority
- CN
- China
- Prior art keywords
- digital
- message
- source
- measured
- digital quantity
- 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.)
- Granted
Links
- 238000000691 measurement method Methods 0.000 title claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000001360 synchronised effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Electric Clocks (AREA)
Abstract
The invention discloses a kind of measurement methods of digital quantity message accuracy, comprising: time synchronism apparatus, measured digital source, protocol conversion apparatus, program controled power source, divider or current divider, High Precision Multimeter, interchanger and server；Clock sync signal is exported to multiple devices by time synchronism apparatus, triggering digital source exports the digital quantity message for meeting IEC61850-9-2 standard after measured digital source receives clock sync signal；Program controled power source receives the analog quantity that setting is exported after clock synchronous triggering signal, by comparing standard digital amount message and measured digital quantity message, obtain the ratio error and phase error of tested digital source outgoing message, so that it is determined that being measured the accuracy of digital source, the industry blank of digital source output digital quantity message accuracy measurement method is compensated for.
Description
Technical field
This application involves the digitized measurement fields, and in particular to a kind of measurement method of digital quantity message accuracy.
Background technique
It with a large amount of construction of national intelligent substation, digitizes relevant device and is widely applied, including protection dress
It sets, metering device, measure and control device, combining unit device etc., and the digital source as standard device is also widely used in for number
In the installation and debugging of word equipment, still, the measurement of the digital quantity message accuracy of digital source output is industry blank, at present also
There is no the accuracy test method of effective digital quantity message.
Summary of the invention
The application provides a kind of measurement method of digital quantity message accuracy, and it is quasi- to compensate for digital source output digital quantity message
The industry blank of exactness test.
This application provides a kind of measurement methods of digital quantity message accuracy characterized by comprising
Time synchronism apparatus, measured digital source, protocol conversion apparatus, program controled power source, divider or current divider, height
Precision multimeter, interchanger and server；The synchronizing device exports clock sync signal to multiple devices；Measured
Digital source, receives the clock sync signal of synchronizing device output, and triggering digital source exports at whole moment second and sets analog quantity pair
The digital quantity message for meeting IEC61850-9-2 standard answered；The program controled power source, by the rising of the synchronization signal received
Edge or failing edge trigger program controled power source and export preset high precision analog as trigger signal；The divider or
The high precision analog that the program controled power source exports is converted into the analog quantity of 0-10V or 0-0.8V by current divider；The association
Conversion equipment is discussed, the clock sync signal of synchronizing device output, 0-10V or 0- of the control High Precision Multimeter to input are received
The analog signals of 0.8V synchronize sampling and analog-to-digital conversion, are converted to the digital quantity report for meeting IEC61850-9-2 standard
Text, standard digital amount message are sent to interchanger by optical interface；The interchanger is used for while receiving and output multi-channel number
Measure message；The server, for running host computer procedure, by comparing standard digital amount message and measured digital quantity report
Text obtains the ratio error and phase error of tested digital quantity message, so that it is determined that the standard of measured digital source outgoing message
Exactness.
Preferably, the synchronizing device exports clock sync signal to multiple devices, specifically, three can be exported simultaneously
Road clock sync signal, respectively to measured digital source, protocol conversion apparatus and program controled power source.
Preferably, the high-precision analog quantity, specifically, the 50Hz that can be, 0-120V alternating voltage, 0-6A are exchanged
Electric current.
Preferably, the interchanger, for simultaneously receive and output multi-channel digital quantity message, can by ST optical port with
RJ45 power port is received and is exported.
Preferably, the server, for running host computer procedure, by compare standard digital amount message and be measured
The digital quantity message of digital source output, so that it is determined that the accuracy of measured digital source outgoing message, comprising:
By comparing the digital quantity message of standard digital amount message and measured digital source, measured digital source is obtained
Ratio error, ratio error mean value, phase error and phase error mean value, so that it is determined that measured digital source is accurate
Degree.
The measurement method of a kind of digital quantity message accuracy provided by the present application, by time synchronism apparatus to multiple devices
Clock sync signal is exported, after measured digital source receives clock sync signal, output meets IEC61850-9-2 standard
Measured digital quantity message；After program controled power source receives clock sync signal, the analog quantity of setting, the mould of setting are exported
Analog quantity is converted to the small signal of voltage of 0-10V (voltage circuit) or 0-0.8V (current loop), association by divider, current divider
View conversion equipment control multimeter synchronizes sampling and analog-to-digital conversion to the analog quantity of input, and output meets IEC61850-9-2
The digital quantity message of standard is determined by comparing the digital quantity message of standard digital amount message and measured digital source output
The accuracy of measured digital source compensates for the industry blank of digital source output digital quantity message accuracy test.
Detailed description of the invention
Fig. 1 is a kind of measuring method flow chart schematic diagram of digital quantity message accuracy provided by the embodiments of the present application.
Specific embodiment
Many details are explained in the following description in order to fully understand the application.But the application can be with
Much it is different from other way described herein to implement, those skilled in the art can be without prejudice to the application intension the case where
Under do similar popularization, therefore the application is not limited by following public specific implementation.
Fig. 1 is please referred to, Fig. 1 is a kind of measuring method flow chart of digital quantity message accuracy provided by the embodiments of the present application
Schematic diagram is described in detail method provided by the present application below with reference to Fig. 1.
The measurement method of a kind of digital quantity message accuracy provided by the present application, comprising: time synchronism apparatus, measured
Digital source, protocol conversion apparatus, program controled power source, divider or current divider, High Precision Multimeter, server and interchanger；
The synchronizing device exports clock sync signal to multiple devices, specifically, three road clock sync signals can be exported simultaneously,
Respectively to measured digital source, protocol conversion apparatus and program controled power source；It is defeated to receive synchronizing device for measured digital source
Clock sync signal out, triggering digital source is in whole moment second output IEC61850-9-2 standard that meets corresponding with analog quantity
Digital quantity message；The protocol conversion apparatus receives the clock sync signal of synchronizing device output, controls High Precision Multimeter
Sampling and analog-to-digital conversion are synchronized to the analog signals of the 0-10V or 0-0.8V of input, grabs to change into and meets IEC61850-9-
The digital quantity message of 2 standards, is sent to interchanger by optical interface；The program controled power source, by the synchronization signal received
Rising edge or failing edge trigger the high-precision analog quantity of program controled power source output setting, the high-precision as trigger signal
Analog quantity, can be 50Hz, the alternating current of the alternating voltage of 0-120V, 0-6A；The divider or current divider, will be described
The high precision analog of program controled power source output is converted into the analog quantity of 0-10V or 0-0.8V；The High Precision Multimeter, passes through
The analog quantity of 0-10V or 0-0.8V is converted into meeting the number of IEC61850-9-2 standard by the control instruction of protocol conversion apparatus
Word amount message, and using the digital quantity message as standard digital amount message；The interchanger is used for while receiving and exporting more
Railway digital message, can be by ST optical port and RJ45 power port receives and output multi-channel number message；The server, for running
Host computer procedure obtains the ratio of measured digital source by comparing standard digital amount message and measured digital quantity message
It is worth error, ratio error mean value, phase error and phase error mean value, so that it is determined that being measured digital source exports digital quantity report
The accuracy of text.
The example that specific data are obtained below according to the above method, furtherly to the progress of method provided by the present application
It is bright.
In room temperature environment, specified reference voltage virtual value is 220kV, and specified reference current virtual value is 1000A, and frequency is
Under the conditions of 50Hz, adjust measured digital source sets voltage output as 80%, 100%, 120% reference voltage virtual value,
The ratio error and phase error of three-phase voltage circuit (A phase: 13 channels, B phase: 15 channels, C phase: 17 channels) are recorded, each
Measurement point is surveyed 10 times, provides the average value of ratio error and phase error, related data is as shown in table 1.Adjust measured number
Word source simultaneously sets the output of measured digital source as 5%, 20%, 100% reference current virtual value, record three-phase current circuit
The ratio error and phase error of (A phase: 2 channels, B phase: 4 channels, C phase: 6 channels), each measurement point are surveyed 10 times, are provided tested
The ratio error of the digital source of amount and the average value of phase error, related data is as shown in table 2, so that it is determined that measured number
The accuracy of source output digital quantity message.
1. voltage-loop error test data of table
2. current-loop error test data of table
By measurement method provided by the present application, clock sync signal is exported to multiple devices using time synchronism apparatus,
After measured digital source receives clock sync signal, output meets the measured digital quantity report of IEC61850-9-2 standard
Text；After program controled power source receives clock sync signal, export the analog quantity of setting, the analog quantity of setting by divider or
Current divider is converted into the small analog quantity of 0-10V or 0-0.8V, and small analog quantity is given to High Precision Multimeter, protocol conversion apparatus control
High Precision Multimeter processed synchronizes sampling and analog-to-digital conversion, is converted into meeting the standard digital amount report of IEC61850-9-2 standard
Text determines measured digital source by comparing the digital quantity message of standard digital amount message and measured digital source output
The accuracy for exporting digital quantity message compensates for the industry blank of the digital quantity message accuracy measurement of digital source output.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although referring to above-described embodiment pair
The present invention is described in detail, those of ordinary skill in the art still can to a specific embodiment of the invention into
Row modifies perhaps equivalent replacement and these exist without departing from any modification of spirit and scope of the invention or equivalent replacement
Apply within pending claims of the invention.
Claims (5)
1. a kind of measurement method of digital quantity message accuracy characterized by comprising
Time synchronism apparatus, measured digital source, protocol conversion apparatus, program controled power source, divider or current divider, high-precision
Multimeter, interchanger and server；The synchronizing device exports clock sync signal to multiple devices；Measured number
Source, receives the clock sync signal of synchronizing device output, and triggering digital source exports corresponding with setting analog quantity at whole moment second
Meet the digital quantity message of IEC61850-9-2 standard；The program controled power source, by the rising edge of the synchronization signal received or
Failing edge triggers program controled power source and exports preset high precision analog as trigger signal；The divider or shunting
The high precision analog that the program controled power source exports is converted into the analog quantity of 0-10V or 0-0.8V by device；The agreement turns
Changing device receives the clock sync signal of synchronizing device output, 0-10V or 0-0.8V of the control High Precision Multimeter to input
Analog signals synchronize sampling and analog-to-digital conversion, be converted to the digital quantity message for meeting IEC61850-9-2 standard, mark
Quasi- digital quantity message is sent to interchanger by optical interface；The interchanger is used for while receiving and output multi-channel digital quantity report
Text；The server, for running host computer procedure, by comparing standard digital amount message and measured digital quantity message,
The ratio error and phase error of tested digital quantity message are obtained, so that it is determined that measured digital source outgoing message is accurate
Degree.
2. the method according to claim 1, wherein the synchronizing device, synchronous to multiple devices output clock
Signal, specifically, three road clock sync signals can be exported simultaneously, respectively to measured digital source, protocol conversion apparatus with
And program controled power source.
3. the method according to claim 1, wherein the high-precision analog quantity, specifically, can
50Hz, 0-120V alternating voltage, 0-6A alternating current.
4. the method according to claim 1, wherein the interchanger, is used for while receiving and output multi-channel number
Word amount message can be received and be exported by ST optical port and RJ45 power port.
5. the method according to claim 1, wherein the server passes through ratio for running host computer procedure
To the digital quantity message of standard digital amount message and measured digital source output, so that it is determined that measured digital source exports report
The accuracy of text, comprising:
By comparing the digital quantity message of standard digital amount message and measured digital source, the ratio of measured digital source is obtained
It is worth error, ratio error mean value, phase error and phase error mean value, so that it is determined that the accuracy of measured digital source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368134.3A CN109444785B (en) | 2018-11-16 | 2018-11-16 | Method for measuring accuracy of digital quantity message |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368134.3A CN109444785B (en) | 2018-11-16 | 2018-11-16 | Method for measuring accuracy of digital quantity message |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109444785A true CN109444785A (en) | 2019-03-08 |
| CN109444785B CN109444785B (en) | 2022-04-22 |
Family
ID=65554495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811368134.3A Active CN109444785B (en) | 2018-11-16 | 2018-11-16 | Method for measuring accuracy of digital quantity message |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109444785B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1206738A1 (en) * | 1984-08-10 | 1986-01-23 | Харьковское Высшее Военное Командно-Инженерное Училище Ракетных Войск Им.Маршала Советского Союза Крылова Н.И. | Device for automatic calibration checking of analog-to-digital converters and digital measuring devices |
| CN103792508A (en) * | 2014-01-27 | 2014-05-14 | 国家电网公司 | Error test system and method for digitized metering device |
| CN104198980A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Accuracy evaluation system for digital electric energy meter |
| CN104407316A (en) * | 2014-12-16 | 2015-03-11 | 国家电网公司 | Calibrating device and calibrating method based on discrete synchronous power sources |
| CN108234567A (en) * | 2016-12-21 | 2018-06-29 | 北大方正集团有限公司 | Method for uploading, client, cloud storage platform and the server of datagram file |
-
2018
- 2018-11-16 CN CN201811368134.3A patent/CN109444785B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1206738A1 (en) * | 1984-08-10 | 1986-01-23 | Харьковское Высшее Военное Командно-Инженерное Училище Ракетных Войск Им.Маршала Советского Союза Крылова Н.И. | Device for automatic calibration checking of analog-to-digital converters and digital measuring devices |
| CN103792508A (en) * | 2014-01-27 | 2014-05-14 | 国家电网公司 | Error test system and method for digitized metering device |
| CN104198980A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Accuracy evaluation system for digital electric energy meter |
| CN104407316A (en) * | 2014-12-16 | 2015-03-11 | 国家电网公司 | Calibrating device and calibrating method based on discrete synchronous power sources |
| CN108234567A (en) * | 2016-12-21 | 2018-06-29 | 北大方正集团有限公司 | Method for uploading, client, cloud storage platform and the server of datagram file |
Non-Patent Citations (1)
| Title |
|---|
| 林国营等: "数字化变电站电能计量装置检验技术", 《电力系统及其自动化学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109444785B (en) | 2022-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102944861B (en) | Electronic transformer calibrator calibration device and method based on digital source | |
| CN102315985B (en) | Time synchronization precision test method for intelligent device adopting IEEE1588 protocols | |
| CN107741549B (en) | Based on analog quantity and the synchronous intelligent substation synchronism tester occurred of digital quantity | |
| CN102590619B (en) | Method for detecting time synchronization capacity of real-time measurement equipment based on timing variable | |
| CN103792508A (en) | Error test system and method for digitized metering device | |
| CN103684907A (en) | Regional power network intelligent equipment time analyzer | |
| CN105572616B (en) | A kind of quiet dynamic test system of phasor measurement unit PMU based on high-precision calibration device | |
| CN104360298A (en) | Performance test system and method for merging unit tester | |
| CN205176248U (en) | Intelligent substation electronic transformer measures accuracy emulation test and compares system | |
| CN104215838A (en) | Remote nuclear phase method for intelligent substation | |
| CN106302014B (en) | The signal measurement method of wide-range high-precision | |
| CN104330677A (en) | Device and method for testing electronic type current transformer | |
| CN103199862A (en) | Data synchronization method used for analog-digital mixed recording | |
| CN110441617A (en) | A kind of high-precise synchronization acquisition device for ultra-high voltage converter station casing monitoring | |
| CN106501764B (en) | The real-time contrastive test method of the online electric energy error of intelligent substation electric energy meter | |
| CN103957069B (en) | Time calibration in network IED time synchronized detection method based on physical layer time information | |
| CN204256149U (en) | A kind of Performance Test System of merge cells tester | |
| CN105548947B (en) | A kind of synchronous source tracing method of digitalized electrical energy meter and system | |
| CN106054000B (en) | It is spaced combining unit power-factor angle consistency on-site test system and test method | |
| CN103905045A (en) | Alternating-current analog-digital conversion device real-time response detection method based on physical layer sampled value | |
| CN103812731A (en) | Digitization sampling time delay frequency conversion measuring method and measuring system | |
| CN210803591U (en) | High-precision synchronous acquisition device for monitoring extra-high voltage converter station sleeve | |
| CN109444785A (en) | A kind of measurement method of digital quantity message accuracy | |
| CN204882847U (en) | Multichannel electronic transformer intelligence check gauge | |
| CN106341744B (en) | A kind of system and method for testing synchronous passive optical network synchronizing characteristics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200115 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant after: China Electric Power Research Institute Co., Ltd. Applicant after: State Grid Co., Ltd. Applicant after: State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute Address before: 430070 complex building 143, Luo Yu Road, Hongshan District, Wuhan, Hubei. Applicant before: China Electric Power Research Institute Co., Ltd. Applicant before: State Grid Co., Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |