CN108896953A - Multi-compartment digital metering test macro based on wireless synchronization - Google Patents
Multi-compartment digital metering test macro based on wireless synchronization Download PDFInfo
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- CN108896953A CN108896953A CN201810675253.7A CN201810675253A CN108896953A CN 108896953 A CN108896953 A CN 108896953A CN 201810675253 A CN201810675253 A CN 201810675253A CN 108896953 A CN108896953 A CN 108896953A
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- 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
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
A kind of multi-compartment digital metering test macro based on wireless synchronization, including test analysis platform, control host, sampling test terminal, message controller, energy collection terminal, pass through whole scene, wireless distributed test pattern, it is mainly used for sampling value synchronization test, comprehensive electric energy error testing, time response, error characteristics and the Network Abnormal characteristic of multi-compartment digital metering system to analysis of metering performance etc., can realizes the system-level performance detection of multi-compartment measuring equipment in substation field.The present invention tests terminal using multiple samplings, wirelessly, solves the system-level test problems of multi-compartment digital balance device；Pass through the abnormalities such as analog voltage electric current actual waveform, message transmissions characteristic, digital balance device under operating condition can be achieved to detect, it ensure that the accuracy of multi-compartment number electrical energy measurement, it has many advantages, such as, and method is simple, economic, scientific, practical, strong operability.
Description
Technical field
The invention belongs to digital metering detection technique fields, and in particular to a kind of multi-compartment digital metering based on wireless synchronization
Test macro.
Background technique
Digitalized electric energy metering method is generally sampled in intelligent substation, number different from traditional way of energy measuring
Electric energy metering device is made of mutual inductor, combining unit, digitalized electrical energy meter, has mainly carried out ecotopia both at home and abroad at present
The detection technique research and detection work of lower individual digit electric energy metering equipment, and the actual conditions at scene are, digitlization electricity
Can metering device be that equipment is mounted on different location one by one, across the Distributed Metering System at multiple intervals, as internal bridge,
When the designs such as 3/2 wiring, bus PT cascade, metering device is spaced across three；And performance influences each other between each equipment, inspection
It is overproof that the qualified single metering equipment of survey is possible to the error in practical application, it is therefore necessary to for the actual conditions at scene, open
Open up the detection technique research of multi-compartment the digitized measurement apparatus system grade, it is ensured that the digitalized electric energy metering device meter of actual motion
Amount is accurate.
Summary of the invention
The problem of can solve the detection of multi-compartment digital metering system it is an object of the invention to provide one kind, between ensure that mostly
Every the multi-compartment digital metering test method based on wireless synchronization of digital energy metering accuracy.
Multi-compartment digital metering test macro based on wireless synchronization of the invention, including test analysis platform, control master
Machine, sampling test terminal, message controller, energy collection terminal, the test analysis platform is with graphic interface to power grid knot
Structure and component parameters are modeled, and the failure of electric system is arranged and simulates, and generate the number such as digitized voltage, electric current in real time
According to, and the sampled value and electric energy information of field device feedback are received, closed loop test system is constructed, realizes whole station measuring system mould
The functions such as quasi-, electronic mutual inductor and combining unit simulated behavior, the control of sampled value transmission network；The control host and institute
Test analysis platform interaction experimental order, test data and result information are stated, by sampled data network distribution by wireless communication
Formula is transmitted to each sampling test terminal, and receives the test result information of test, while passing through communication network and each sampling
The synchronous clock synchronization information of terminal interaction is tested, the time synchronization of whole system is completed；The sampling test terminal is through wireless network and institute
Control host interaction test data is stated, while sending sample values and synchronous clock synchronization information, and interaction to combining unit to be measured
Sampled value output, testing result etc. test feedback data, complete combining unit error to be measured, time response etc. and calculate, described to adopt
After sample test terminal powers on, network clock synchronization message is monitored in timing on a communication network, is automatically performed Network Synchronization clock synchronization；The report
Literary controller by fiber optic Ethernet mouth receive combining unit issue IEC61850-9 message, while message controller by with
The connection of the test analysis platform receives the order from background control system, according to the order of the test analysis platform
In the case where not changing message format, the packet loss or error code ratio, delay variation, transmission spaced discrete value, net of message are controlled
The combining units operation irregularities such as the time parameters such as viscous frame number caused by network obstruction, or the invalid, step-out of setting channel data quality
Situation can be used for the Performance Evaluation of substation's metering system under sampled value transmission network abnormal conditions；The energy collection terminal
The electrical energy impulse signals for receiving digital quantity electric energy meter output to be measured, through wireless network by sending on the control host to the survey
Analysis platform is tried, original energy information and practical back production energy information are compared by the test analysis platform, obtain digital metering
System level synthesis electric energy error.
Multi-compartment digital metering test macro based on wireless synchronization of the invention is tested terminal using multiple samplings, is led to
Wireless mode is crossed, the system-level test problems of multi-compartment digital balance device are solved；Pass through analog voltage electric current actual waveform, report
The abnormalities such as literary transmission characteristic ensure that multi-compartment number electric energy meter, it can be achieved that digital balance device detection under operating condition
The accuracy of amount, it has many advantages, such as, and method is simple, economic, scientific, practical, strong operability.
Detailed description of the invention
Fig. 1 is the multi-compartment digital metering test principle figure of the invention based on wireless synchronization.
Specific embodiment
Test macro simulates its transmission characteristic according to the technical characterstic of electronic mutual inductor and combining unit and its is different
Regular data, the multiport for configuring sample values export and control the chronodispersion and asynchronous machine of its message transmission process
Random Discrete data under reason are sent, with check gauging system performance.It is mutual that electronic type is built using optical fiber and wireless communication technique
Sensor characteristic Simulation, the systems such as process layer interface simulation, sampling transmission network control, metrical information feedback, substation is measured
System information tissue, the combining unit of distribution function, the network switch, telecommunication optical fiber and digitalized electrical energy meter are included in inspection together
Range is tested, its wiring integrality and input information integrity are kept when carrying out service check to metering system, to reach inspection
Test the purpose of substation's multi-compartment metering system function and technical performance.Really realize metering system in substation field dynamic analog
Quasi- system level testing.
The first step：Using distributed system measuring technology, tester is first depending on experiment purpose and determines testing scheme, benefit
Transformer substation system simulation model is established with the test analysis platform, configures experiment parameter, carries out test data calculating；
Second step：After test data is ready, cordless communication network, the sampling of each decentralized configuration are transmitted to through the control host
Terminal is tested by wireless network, obtains test data and synchronous clock synchronization information in real time, and completes each sampling test terminal
Clock synchronization；The message controller receives configuration order, completes message packet loss or error code ratio, delay variation, discrete value, network resistance
The combining units operation irregularities such as the time parameters configuration such as viscous frame number caused by plug, or the invalid, step-out of setting channel data quality
Situation, analog message abnormal conditions；
Third step：After tester issues test triggering command, each sampling test terminal surveys the digitlization cached
Try data output, at the same interact with rear end equipment sampled value, electric energy information and combining unit testing result and on send data；
4th step：The test analysis platform analyzes test result, distributed realization metering system integrated testability.
Comprehensive electric energy error calculation：Digital standard source exports the adopted value data frame for following IEC61850-9 agreement, and should
Voltage representated by data frame, the amplitude of current signal and phase can be arranged according to actual requirement, the parameter according to configuration
Obtain theoretical energy valueW N, electric energy measurement is obtained from subject instrumentW X;It is then as follows to be tested instrument relative error：
In formula：γ --- relative error；
The test of sample values synchronism：The phase error table of tested two sample channel datas of sample values synchronism
Show, two tested sample channel datas in the electric energy sampling terminal synchronous acquisition digitalized electrical energy meter, using fft algorithm meter
The fundamental voltage amplitude and phase of each sample channel data are calculated, to obtain the phase error of each sampling channel.
Claims (1)
1. a kind of multi-compartment digital metering test macro based on wireless synchronization, including test analysis platform, control host, sampling
Test terminal, message controller, energy collection terminal, it is characterised in that：The test analysis platform is with graphic interface to electricity
Web frame and component parameters are modeled, and the failure of electric system is arranged and simulates, and generate digitized voltage, electric current number in real time
According to, and the sampled value and electric energy information of field device feedback are received, construct closed loop test system；The control host with it is described
Test analysis platform interacts experimental order, test data and result information, by sampled data network distribution type by wireless communication
It is transmitted to each sampling test terminal, and receives the test result information of test, while being surveyed by communication network and each sampling
The synchronous clock synchronization information of terminal interaction is tried, the time synchronization of whole system is completed；Sampling test terminal through wireless network with it is described
Host interaction test data is controlled, while sending sample values and synchronous clock synchronization information to combining unit to be measured, and interaction is adopted
Sample value output, testing result etc. test feedback data；The message controller receives combining unit hair by fiber optic Ethernet mouth
IEC61850-9 message out, while message controller is received by the connection with the test analysis platform and is controlled from backstage
The order of system processed；The energy collection terminal receives the electrical energy impulse signals of digital quantity electric energy meter output to be measured, through wireless network
Network by sending to the test analysis platform on the control host, by the original energy information of test analysis platform comparison and
Practical back production energy information obtains digital metering system grade comprehensive electric energy error.
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| CN201810675253.7A CN108896953A (en) | 2018-06-27 | 2018-06-27 | Multi-compartment digital metering test macro based on wireless synchronization |
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| CN201810675253.7A CN108896953A (en) | 2018-06-27 | 2018-06-27 | Multi-compartment digital metering test macro based on wireless synchronization |
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Cited By (6)
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| CN109725281A (en) * | 2019-01-18 | 2019-05-07 | 国网江苏省电力有限公司电力科学研究院 | A kind of long-range source tracing method of digitalized electrical energy meter based on quantum techniques and system |
| CN109946513A (en) * | 2019-03-26 | 2019-06-28 | 江苏凌创电气自动化股份有限公司 | Based on across the gap digit change metering method of the absolute compensation of delay of network samples, apparatus and system |
| CN110297208A (en) * | 2019-07-26 | 2019-10-01 | 国网安徽省电力公司电力科学研究院 | Digitize live various dimensions test method and test macro across interval metering system |
| CN111090003A (en) * | 2019-11-14 | 2020-05-01 | 国网江西省电力有限公司电力科学研究院 | Synchronous direct current electric energy metering system based on Beidou/GPS clock |
| CN112698262A (en) * | 2020-11-27 | 2021-04-23 | 国网湖北省电力有限公司营销服务中心(计量中心) | Automatic detection device and detection method for digital electric energy centralized metering device |
| CN115483761A (en) * | 2022-09-29 | 2022-12-16 | 中国南方电网有限责任公司超高压输电公司柳州局 | Electric energy centralized acquisition metering system, method, device and equipment |
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| CN112698262A (en) * | 2020-11-27 | 2021-04-23 | 国网湖北省电力有限公司营销服务中心(计量中心) | Automatic detection device and detection method for digital electric energy centralized metering device |
| CN115483761A (en) * | 2022-09-29 | 2022-12-16 | 中国南方电网有限责任公司超高压输电公司柳州局 | Electric energy centralized acquisition metering system, method, device and equipment |
| CN115483761B (en) * | 2022-09-29 | 2023-12-12 | 中国南方电网有限责任公司超高压输电公司柳州局 | Electric energy centralized collection metering system, method, device and equipment |
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Application publication date: 20181127 |