CN104267374B - Metering device on-line checking and status assessing system - Google Patents
Metering device on-line checking and status assessing system Download PDFInfo
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- CN104267374B CN104267374B CN201410557288.2A CN201410557288A CN104267374B CN 104267374 B CN104267374 B CN 104267374B CN 201410557288 A CN201410557288 A CN 201410557288A CN 104267374 B CN104267374 B CN 104267374B
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Abstract
The invention discloses a kind of on-line checking of metering device and status assessing system, including：Source of Gateway Meter, Source of Gateway Meter apparatus for evaluating, data concentrator and main website server；The inside collection electric quantity data of Source of Gateway Meter is concentrated and obtains and be uploaded to main website server by data concentrator；Source of Gateway Meter apparatus for evaluating gathers the electric quantity data of power network critical point node and reads the inside collection electric quantity data of Source of Gateway Meter in real time, carries out data statistics and comparative analysis, carries out on-line checking and state estimation to Source of Gateway Meter, alarm is provided for abnormal conditions system；Main website server carries out remote monitoring and state estimation to Source of Gateway Meter.System cost of the invention is low, easy for installation, operation maintenance is simple, the data such as voltage, electric current, power, the electricity of energy on-line checking metering device, real-time online error-detecting and alarm, the test of voltage secondary voltage drop, the test of Current Voltage secondary load to Source of Gateway Meter are realized, existing artificial inspection pattern is instead of.
Description
Technical field
The present invention relates to a kind of metering device monitoring system, more particularly to a kind of on-line checking of metering device is commented with state
Estimate system.
Background technology
Energy metering device be used for country between, between regional power grid, between provincial power network, between area power grid, hair
Electrical energy metering equipment, including gate energy meter, voltage transformer are used in the chargings such as electric enterprise online, mega-corporation user or examination
PT, Current Transmit and secondary circuit etc..In order to ensure the accuracy of metering, the said equipment needs periodically to carry out detection school
Test, the method generally used now be artificial cycle carry specialized detection to scene inspection, the manpower of input and it is expensive,
Detect that workload is big, workflow very complicated, cycle are long, it is impossible to grasp the running status of equipment in real time, also can not be to numerous
Electric energy measuring equipment effectively monitor and manage, equipment failure alarm information is difficult to be fed back in time.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of prior art to be examined online there is provided a kind of metering device
Survey and status assessing system, CPU technology of the system based on a new generation, using large scale integrated circuit, at digital sample
Reason technology and SMT techniques, and equipped with complete advanced network management system, system have that cost is low, easy for installation, operation maintenance is simple
The features such as, the data such as voltage, electric current, power, electricity of energy on-line checking metering device realize the real-time online to Source of Gateway Meter
Error-detecting and alarm, the test of voltage secondary voltage drop, the test of Current Voltage secondary load, instead of existing artificial inspection mould
Formula.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
The on-line checking and status assessing system of metering device, including Source of Gateway Meter, Source of Gateway Meter apparatus for evaluating, data concentrator
And main website server；Source of Gateway Meter and the Source of Gateway Meter apparatus for evaluating is connected with power network, the Source of Gateway Meter and data concentrator,
Main website server is sequentially connected, and the Source of Gateway Meter apparatus for evaluating is connected with Source of Gateway Meter, main website server；The data concentrator
The inside collection electric quantity data of the Source of Gateway Meter is concentrated and obtains and be uploaded to main website server；The Source of Gateway Meter apparatus for evaluating is real
When collection power network critical point node electric quantity data and read the inside collection electric quantity data of the Source of Gateway Meter, carry out data statistics
And comparative analysis, on-line checking and state estimation are carried out to the Source of Gateway Meter, alarm is provided for abnormal conditions system, will count
Data and comparative analysis result are uploaded to main website server；The main website server is adopted according to the inside of the Source of Gateway Meter of acquisition
The statistics and comparative analysis result of collection electric quantity data and the Source of Gateway Meter apparatus for evaluating are remotely supervised to the Source of Gateway Meter
Control and state estimation.
It is preferred that, on-line checking and the status assessing system of the metering device also include PT harvesters, and the PT is adopted
Acquisition means are connected with voltage transformer pt and Source of Gateway Meter apparatus for evaluating, and the PT harvesters collection PT voltage datas are simultaneously returned to
Source of Gateway Meter apparatus for evaluating, Source of Gateway Meter apparatus for evaluating is according to the PT voltage datas and the critical point table side voltage data of collection to secondary
Loop pressure drop is monitored.
It is preferred that, on-line checking and the status assessing system of the metering device also include CT harvesters, and the CT is adopted
Acquisition means are connected with Current Transmit and Source of Gateway Meter apparatus for evaluating, and the Source of Gateway Meter apparatus for evaluating is according to the PT harvesters
The voltage x current data gathered with CT harvesters are monitored to PT loads, the CT loads of secondary circuit.
It is preferred that, the Source of Gateway Meter apparatus for evaluating includes analogue collection module, Source of Gateway Meter communication module, pulsed quantity collection
Module, switching value acquisition module, PT/CT communication modules, main website communication module, clock module, on-site maintenance module, it is locally stored
Module, LED display module.
It is preferred that, the clock module includes real-time clock module and GPS module.
It is preferred that, the Source of Gateway Meter apparatus for evaluating is according to the PT voltage datas and the critical point table side voltage data pair of collection
Secondary circuit voltage drop is monitored including the virtual value that PT harvesters measure PT voltages is commented by being wirelessly transmitted to Source of Gateway Meter
Estimate device, the critical point table side voltage effective value gathered with Source of Gateway Meter apparatus for evaluating is contrasted, and draws PT secondary circuit voltage drops
Amplitude error.
It is preferred that, the Source of Gateway Meter apparatus for evaluating is monitored to secondary circuit voltage drop including being commented by Source of Gateway Meter
Estimate the GPS module of device and time synchronized carried out to PT harvesters and Source of Gateway Meter apparatus for evaluating, at the same produce PT harvesters and
The phase measurement enabling signal of Source of Gateway Meter apparatus for evaluating realizes the synchro measure of phase, to draw the phase of PT secondary circuit voltage drops
Error.
It is preferred that, the GPS module by Source of Gateway Meter apparatus for evaluating is entered to PT harvesters and Source of Gateway Meter apparatus for evaluating
Row time synchronized includes, and the GPS module obtains the synchronous pps pulse per second signals of GPS and is used as phase measurement enabling signal.
It is preferred that, the main website server and the communication of Source of Gateway Meter apparatus for evaluating use wired ethernet or wireless network.
It is preferred that, the communication of the Source of Gateway Meter communication module and the Source of Gateway Meter uses RS485 buses, and the PT/CT leads to
Interrogate module and the communication of PT harvesters and CT harvesters uses Zigbee wireless telecommunications.
Compared with prior art, beneficial effects of the present invention：
1. substituting existing artificial inspection pattern, cost of labor is low, easy for installation, operation maintenance simple, can on-line checking meter
The data such as voltage, electric current, power, electricity of device are measured, real-time online error-detecting and alarm to Source of Gateway Meter, voltage two is realized
Secondary pressure fall-off test, the test of Current Voltage secondary load.
2. supporting multigroup monitoring function, one Source of Gateway Meter apparatus for evaluating can to 12 measurement loop monitoring, there is provided rich simultaneously
The functions such as rich circuit monitoring, data storage, communication, man-machine interface, remote management.
3. critical point table side eliminates traditional long wire using wireless communication mode collection PT, CT sides voltage x current data
Metering system, equipment is easy for installation.
4. system adds GPS module to carry out time synchronized in secondary circuit voltage drop part of detecting, so as to ensure accurate
The phase error of secondary circuit voltage drop is measured, than traditional general mode for being only capable of detection secondary circuit voltage drop amplitude error more
Accurately.
5. the main website server of power network measurement centre supports long-range real-time operation Source of Gateway Meter apparatus for evaluating, collection monitoring, report
Police, display, analytic statistics, communication, management configuration function are in one, and system can both realize the data pair at real-time sampling moment
Than the analysis of statistical value in one section of event can also be done.
Brief description of the drawings
Fig. 1 is system structure diagram of the invention
Fig. 2 is Source of Gateway Meter apparatus for evaluating structural representation of the invention.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of above-mentioned theme of the invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
As shown in figure 1, the on-line checking of metering device and status assessing system include Source of Gateway Meter, Source of Gateway Meter apparatus for evaluating,
Data concentrator and main website server；Source of Gateway Meter and Source of Gateway Meter apparatus for evaluating are connected with power network circuit, Source of Gateway Meter and number
It is sequentially connected according to concentrator, main website server, Source of Gateway Meter apparatus for evaluating is connected with Source of Gateway Meter, main website server；In data set
The inside collection electric quantity data of Source of Gateway Meter is concentrated and obtains and be uploaded to main website server by device；Source of Gateway Meter apparatus for evaluating possesses high-precision
Observation circuit is spent, in real time the information about power data of collection power network critical point node, while supporting various stipulations to read critical point
The inside gathered data of ammeter carries out data statistics and comparative analysis, and on-line checking and state estimation are carried out to the Source of Gateway Meter,
Alarm is provided for abnormal conditions system, while statistics and comparative analysis result are uploaded into main website server；Power network
The main website server of measurement centre gathers the system of electric quantity data and the Source of Gateway Meter apparatus for evaluating inside the Source of Gateway Meter according to acquisition
Count and remote monitoring and state estimation are carried out to Source of Gateway Meter with comparative analysis result.
System needs that when monitoring PT, CT installation PT harvesters and CT harvesters can be matched, it is not necessary to monitor
PT, CT then can be individually attached Source of Gateway Meter apparatus for evaluating.
PT harvesters are installed in power network PT cabinets, with voltage transformer pt（Not shown in figure）Assess and fill with Source of Gateway Meter
Put connected, PT three-phase voltages are done high precision collecting by PT harvesters on the spot, and give Source of Gateway Meter apparatus for evaluating by data back, close
Oral thermometer apparatus for evaluating can also do the voltage of the collection point of critical point table side accurate measurement, and background system is according between 2 measurement points
Data can monitor the situation of secondary circuit voltage drop.PT secondary circuit voltage drops are tested, it is necessary to which the voltage for fetching road two ends enters
Row contrast, obtains the percentage that pressure drop accounts for signal.Traditional way is that PT sides signal is guided into instrument side with long wire, uses pressure drop
Amplitude error and phase error that instrument is tested between PT sides and the signal of instrument side two.The present invention uses for the convenience of installation
Wireless mode.The virtual value of voltage is measured by PT harvesters in PT sides, by the Source of Gateway Meter for being wirelessly transmitted to ammeter side
The ammeter side voltage effective value that apparatus for evaluating is collected with it is contrasted, and draws the amplitude error of PT secondary circuit voltage drops.More
Further, the present invention is also carried out by the GPS module of Source of Gateway Meter apparatus for evaluating to PT harvesters and Source of Gateway Meter apparatus for evaluating
Time synchronized, while the phase measurement enabling signal of generation PT harvesters and Source of Gateway Meter apparatus for evaluating realizes the same pacing of phase
Amount, to draw the phase error of PT secondary circuit voltage drops.Because phase test needs to be accurate to point, corresponding time delay exists
1uS or so, therefore the system adds GPS module to carry out time synchronized（Time service precision 1uS）, GPS is obtained by GPS module
Synchronous pps pulse per second signal is as phase measurement enabling signal, so that the phase error to ensure to measure secondary circuit voltage drop.
CT harvesters are installed in power network CT cabinets, with Current Transmit（Not shown in figure）Assess and fill with Source of Gateway Meter
Put connected, the voltage of secondary circuit PT sides and the current signal of this circuit are measured by PT harvesters, passes through CT harvesters
The electric current and the voltage signal of this circuit of the CT sides of secondary circuit are measured, Source of Gateway Meter apparatus for evaluating obtains above-mentioned data and passes through processing
PT loads, the CT loads of secondary circuit are obtained, so as to realize the on-line monitoring of the PT loads to secondary circuit, CT loads.
As shown in Fig. 2 Source of Gateway Meter apparatus for evaluating includes analogue collection module, Source of Gateway Meter communication module, pulsed quantity collection
Module, switching value acquisition module, PT/CT communication modules, main website communication module, clock module, on-site maintenance module, it is locally stored
Module, LED display module.One table apparatus supports multigroup monitoring function, and 12 measurement loop monitoring are could support up per table apparatus.Dress
Put the internal voltage point using three current transformers with the linear characteristic compensated and three precision resistances per road monitoring signal
Depressor.Device using at a high speed 32 Cotex-M3 kernels, performance reach 70Mips there is provided abundant circuit monitoring, data storage,
The functions such as communication, man-machine interface, remote management.System possesses massive store, supports international IEC standard related to state net electric power
Ammeter communication protocol：DL/T614, DL/T645 stipulations.
Analogue collection module is responsible for the ac analog collection in 12 loops, wherein per the electric current of 3 voltage of loop 3, wiring side
Formula is 3P4L or 3P3L.Data processing obtains each loop voltage, electric current, active power, reactive power, apparent energy, active electricity
The parameters of electric power such as energy, reactive energy, frequency, phase angle.
Source of Gateway Meter communication module is responsible for the data acquisition of 12 pieces of Source of Gateway Meter, obtains the voltage of every piece of Source of Gateway Meter, electric current, active
The parameters of electric power such as power, reactive power, apparent energy, active energy, reactive energy, frequency, phase angle are logical by RS485 buses
News obtain data.
Pulsed quantity acquisition module, switching value acquisition module realize 12 road pulsed quantities or switch acquisition, are mainly used in electric energy
The measurement of pulse, or line switching signal sampling.
PT/CT communication modules are realized carries out wireless networking with 12 CT equipment and 4 PT equipment, realizes that wireless data is passed
Defeated, communication wireless telecommunications are realized using Zigbee.
Main website communication module is realized carries out data interaction with main website, main website by this module equipment is carried out parameter setting,
Status monitoring, sampled data and assessment initial data are obtained.Communication modes are power communication wired ethernet mode or operation
Business's 2G, 3G, 4G wireless network.
Clock module realizes the operation of equipment clock time, the reservation of power down time, including real-time clock module
And GPS module.32.768KHz crystal units built in real-time clock module, with moment, calendar, various detection functions, interruption etc.
Function.GPS module is a complete satellite fix receiving device, possesses comprehensive function, and positioning time cold start-up is less than
27s, time service precision 1us, output information include UTC time, longitude and latitude, pulse per second (PPS).
On-site maintenance module and LED display module are mainly responsible for completing presence states instruction by the live indicator lamps of LED, lead to
Cross serial ports and realize that PC on-site maintenance is operated, including arrange parameter, read data etc..
The preservation that module is mainly used in device configuration parameter, the preservation of sampling correcting data is locally stored, history freezes number
According to preservation, event occur preserve etc..
The main website server operation remote back-office system software of power network measurement centre, obtains Source of Gateway Meter and Source of Gateway Meter is assessed
The various data that device is uploaded can reflect the relevant rudimentary of metering device there is provided the function being managed to Back ground Information
Information and operation maintenance information.Back ground Information includes substation information, power plant or customer information, electric energy meter information, transformer letter
Breath, secondary loop information, line information, bus information, end message, transformer information etc..Operational factor to Source of Gateway Meter is adopted
Collect and store, form the historical record of the operation conditions of electric energy meter.System according to condition can go out field apparatus by express statistic（Electric energy
Table, voltage transformer, current transformer）Machine account information, amr message（Voltage, electric current, power, power factor (PF), phase angle, electricity
Can list event, maximum demand, freeze rate and period that electricity, electric energy meter date-time, cell voltage, electric energy meter have been set）,
And EXCEL form statistical forms can be exported, and form can be printed out（Print ammeter error curve, PT secondary voltage drops curve, CT and
Its secondary circuit alien frequencies mechanical admittance curves figure）.System provides various exceptions and overproof, overload alarm（Alarm threshold can be carried out to set
Put）, alarm includes：Electric energy meter decompression, defluidization, disconnected phase, the alarm of ammeter battery undervoltage, electric energy meter error are transfinited, secondary circuit pressure
Drop transfinites, secondary load is abnormal, system itself is abnormal（PT/CT harvesters are abnormal, and Source of Gateway Meter apparatus for evaluating is abnormal）.And prop up
Hold the every alarm content of preservation, display and printing.Print content of the content comprising alert data and time of origin etc..System is to production
Raw alerts carry out sound, the function of light prompting, and alarm graphics mode is shown（Including Real time graph, data list, histogram, cake
Figure）；Automatic spring prompting function is had to the alarm newly produced.System is supported to press different alarm levels, sets and alert display
Color.System has the default value of an alarm level color, while supporting User Defined.When system receives new alarm,
According to different alarm levels, different sound are produced, point out user to have new alarm to produce, solution in time is noted.System has
Default alarm sound, while supporting User Defined such as Source of Gateway Meter running status abnormal or bad border abnormal parameters, can be reported immediately
Alert, administrative staff are checked Source of Gateway Meter in the very first time.
Main website server also supports long-range real-time operation Source of Gateway Meter apparatus for evaluating, collection monitoring, alarm, display, analytic statistics,
Communication, management configuration function are in one, and system can both realize the data comparison at real-time sampling moment, can also do one section of event
The analysis of interior statistical value.
The problems such as metering device on-line monitoring and the status assessing system of the present invention is for gate energy meter inspection, detection
The system researched and developed so that it is big to solve manual inspection, detection workload, workflow is cumbersome, it is complicated the problems such as.System is based on new
The CPU technologies of a generation, using large scale integrated circuit, using digital sample treatment technology and SMT techniques, and equipped with complete advanced
Network management system, what is manufactured according to designed by user's request has the gate energy meter monitoring of the complete set of modern advanced level
System.
Claims (6)
1. the on-line checking and status assessing system of metering device, it is characterised in that including Source of Gateway Meter, Source of Gateway Meter apparatus for evaluating,
Data concentrator and main website server；Source of Gateway Meter and the Source of Gateway Meter apparatus for evaluating is connected with power network, the Source of Gateway Meter with
Data concentrator, main website server are sequentially connected, and the Source of Gateway Meter apparatus for evaluating is connected with Source of Gateway Meter, main website server；Its
In, the Source of Gateway Meter apparatus for evaluating is connected by impulse line and RS485 lines with Source of Gateway Meter, and wherein impulse line connects Source of Gateway Meter pulse
Port, RS485 lines connect Source of Gateway Meter PORT COM；The inside of the Source of Gateway Meter is gathered electric quantity data collection by the data concentrator
It is middle to obtain and be uploaded to main website server；The Source of Gateway Meter apparatus for evaluating gathers the electric quantity data of power network critical point node simultaneously in real time
The inside collection electric quantity data of the Source of Gateway Meter is read, data statistics and comparative analysis is carried out, the Source of Gateway Meter is carried out online
Detection and state estimation, alarm is provided for abnormal conditions system, and statistics and comparative analysis result are uploaded into main website clothes
Business device；The main website server gathers electric quantity data and the Source of Gateway Meter apparatus for evaluating according to the inside of the Source of Gateway Meter of acquisition
Statistics and comparative analysis result remote monitoring and state estimation are carried out to the Source of Gateway Meter；
The Source of Gateway Meter apparatus for evaluating includes analogue collection module, Source of Gateway Meter communication module, pulsed quantity acquisition module, switching value
Acquisition module, PT/CT communication modules, main website communication module, clock module, on-site maintenance module, be locally stored module, LED show
Show module；
Also include PT harvesters, the PT harvesters are connected with voltage transformer pt and Source of Gateway Meter apparatus for evaluating, the PT
Harvester gathers PT voltage datas and returns to Source of Gateway Meter apparatus for evaluating, and Source of Gateway Meter apparatus for evaluating is according to the PT voltage datas
Secondary circuit voltage drop is monitored with the critical point table side voltage data of collection；
Pulsed quantity acquisition module, switching value acquisition module realize 12 road pulsed quantities or switch acquisition；
The clock module includes real-time clock module and GPS module；
The Source of Gateway Meter apparatus for evaluating is monitored to secondary circuit voltage drop including passing through the GPS module of Source of Gateway Meter apparatus for evaluating
Time synchronized is carried out to PT harvesters and Source of Gateway Meter apparatus for evaluating, while producing PT harvesters and Source of Gateway Meter apparatus for evaluating
Phase measurement enabling signal realizes the synchro measure of phase, to draw the phase error of PT secondary circuit voltage drops.
2. the on-line checking and status assessing system of metering device according to claim 1, it is characterised in that also including CT
Harvester, the CT harvesters are connected with Current Transmit and Source of Gateway Meter apparatus for evaluating, the Source of Gateway Meter apparatus for evaluating
The voltage x current data gathered according to the PT harvesters and CT harvesters are carried out to PT loads, the CT loads of secondary circuit
Monitoring.
3. the on-line checking and status assessing system of metering device according to claim 1, it is characterised in that the critical point
Table apparatus for evaluating is monitored bag to secondary circuit voltage drop according to the critical point table side voltage data of the PT voltage datas and collection
Include, PT harvesters measure the virtual value of PT voltages by being wirelessly transmitted to Source of Gateway Meter apparatus for evaluating, with Source of Gateway Meter apparatus for evaluating
The critical point table side voltage effective value of collection is contrasted, and draws the amplitude error of PT secondary circuit voltage drops.
4. the on-line checking and status assessing system of metering device according to claim 1, it is characterised in that described to pass through
The GPS module of Source of Gateway Meter apparatus for evaluating carries out time synchronized to PT harvesters and Source of Gateway Meter apparatus for evaluating to be included, the GPS moulds
Block obtains the synchronous pps pulse per second signals of GPS and is used as phase measurement enabling signal.
5. the on-line checking and status assessing system of metering device according to claim 2, it is characterised in that the main website
The communication of server and Source of Gateway Meter apparatus for evaluating uses wired ethernet or wireless network.
6. the on-line checking and status assessing system of metering device according to claim 1, it is characterised in that the critical point
Table communication module and the communication of the Source of Gateway Meter use RS485 buses, and the PT/CT communication modules are adopted with PT harvesters and CT
The communication of acquisition means uses Zigbee wireless telecommunications.
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| CN201410557288.2A CN104267374B (en) | 2014-10-17 | 2014-10-17 | Metering device on-line checking and status assessing system |
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| CN201410557288.2A CN104267374B (en) | 2014-10-17 | 2014-10-17 | Metering device on-line checking and status assessing system |
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| CN104267374B true CN104267374B (en) | 2017-09-26 |
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