CN105929223B - A kind of measurement system and method for measurement of concentrated collection distribution display - Google Patents
A kind of measurement system and method for measurement of concentrated collection distribution display Download PDFInfo
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- CN105929223B CN105929223B CN201610217644.5A CN201610217644A CN105929223B CN 105929223 B CN105929223 B CN 105929223B CN 201610217644 A CN201610217644 A CN 201610217644A CN 105929223 B CN105929223 B CN 105929223B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
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Abstract
The present invention relates to the measurement systems and method for measurement of a kind of distribution display of concentrated collection.It is a kind of reasonable in design currently not yet, easy to use, the measurement system and method for measurement of the high concentrated collection distribution display of measurement efficiency.The characteristics of measurement system of the invention, is: including veneer main processor unit and multi-disc display unit, MCU module, acquisition channel module, RJ45 communication module and CANBUS communication module are provided in monolithic integrated circuit plate in veneer main processor unit, the quantity of display unit is three pieces or more, is connected between each display unit and veneer main processor unit by data communication line.The characteristics of method for measurement of the invention, is: calculating workflow including the electrical quantity based on AC sampling, the network of binding process and the support of RJ45 communication module between display unit and the acquisition channel module of veneer main processor unit directly accesses and push workflow.The present invention has rational design, easy to use, and measurement efficiency is high.
Description
Technical field
The present invention relates to the applied technical fields such as the acquisition of electrical quantity and Centralized Monitoring management, and in particular to a kind of concentration is adopted
The measurement system and method for measurement of collection distribution display.
Background technique
The use of electric energy is throughout everywhere, including the power and lighting electricity consumption of government departments and institutions of enterprise, also includes that home dwelling is empty
Adjust household electrical appliances electricity consumption.It is low containing distributed generation resource and all kinds of charging piles in electric car and photovoltaic power generation more more and more universal today
Press-fitting power grid becomes mainstream distribution net work structure.To power distribution network carry out comprehensively measure be distribution network planning, design, operation, maintenance,
The basic technical means and measure of recovery.
380V low-voltage distribution is divided into total input-wire, common feeder line, capacitor and grid-connected circuit charge circuit.Low-voltage distribution is only
Only total input-wire circuit is one face low-tension switch cabinet of independent occupancy, other, is to lay multiloop on a face low-tension switch cabinet, at most
When will appear a face low-voltage cabinet and lay 9 layers of total 18 intervals circuit.
Inlet wire, feeder line, capacitor loops, grid-connected circuit, charge circuit etc. are all on same bus, the three-phase in these circuits
Voltage be it is common, each circuit interval is mainly that size of current is different and interval can independently close a floodgate or separating brake.As shown in Figure 1, should
Power distribution cabinet has laid eight intervals circuit.
Multi-panel low pressure has often been laid in a school, a government departments and institutions, a workshop low-voltage power distribution room (room)
Cabinet, feeding circuit up to several hundred intervals.If an electric bus charging station is by a transformer, an incoming line cabinet, 3 faces
6 circuit charging interval cabinets and capacitor panel composition, the electric bus charging station have 18 quick charge stakes.
Measurement technology means in low-voltage distribution circuit mainly include network instrument technology, digital displaying meter technology, multiloop at present
Observation and control technology etc..
Network instrument technology: using single-chip microcontroller as core component, 3 road electric current, 3 road voltage acquisition circuit, 4 way switch have been laid
Components, network instrument and the measurements such as 4 way switch amount output loops of amount input, RS485 order circuit, man-machine interface, casing structure
Interval corresponds, how many interval must just be laid out how many network instruments.
Digital displaying meter technology: using 8 single-chip microcontrollers as core component, 3 current loops, numeral method component, small machine are laid
The components such as shell structure；Digital displaying meter starting point is substitution mechanical indicating pointer table, is laid out and installs in each distribution interval, is convenient for inspection people
Member's viewing.
Multiloop observation and control technology: using entire power distribution cabinet or the upper (lower) portion of power distribution cabinet as object, using embedded controller as core
Center portion part has laid three-phase voltage circuit and multichannel current loop, On-off signal output loop, RS485 order circuit, man-machine
The components such as interface, casing structure, multiloop measure and control device are corresponded with power distribution cabinet, and a face power distribution cabinet is only equipped with more than one
Circuit measure and control device.
" unattended, concentration operation and maintenance " are distribution system Main Patterns, and staff's inspection or robot inspection are
Important daily measure.Low-voltage distribution measurement technology must take into account the support to remote centralized control, it is also necessary to convenient inspection on the spot
It checks.Digital displaying meter itself is only watched on the spot without communication interface, digital displaying meter.Multifunctional measurement and control device is in each interval circuit
There is no display interface, brings very big inconvenience to inspection on the spot.Network instrument is because be for distribution interval layout designs, more
Because it is contemplated that cost and select low specification device component so that remote monitoring system needs the network instrument quantity of link maintenance non-
Chang Duo, network instrument itself high failure rate, so as to cause complex system.
The hardware resource of main equipment (such as main transformer) main power grid (110KV voltage) measurement technology maturation is matched with high standard
Device component is set to apply in power distribution network, be using low pressure cabinet body as object it is necessary, adopt " measure concentrate, each interval display " measure
It is one of the technical measures that power distribution network measures.
If publication date is on October 08th, 2014, in the Chinese patent of Publication No. CN104090187A, one kind is disclosed
The acquisition of ring network cabinet electrical quantity and failure recording device, ring network cabinet electrical quantity acquisition and failure recording device are provided simultaneously with electrical quantity
Acquisition and fault logging function, it can be difficult to realizing the function of concentrated collection.Publication date is on 06 08th, 2011, Publication No.
In the Chinese patent of CN102087308A, a kind of electric system electrical quantity acquisition testing & analysis instrument and method, the electric power are disclosed
System electrical amount acquisition testing & analysis instrument is difficult to realize the function of concentrated collection.
It is a kind of reasonable in design currently not yet, easy to use, the amount of the high concentrated collection distribution display of measurement efficiency
Examining system and method for measurement.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide it is a kind of reasonable in design,
It is easy to use, the measurement system and method for measurement of the high concentrated collection distribution display of measurement efficiency.
Technical solution used by the present invention solves the above problems is: the spy of the measurement system of concentrated collection distribution display
Point is: the monolithic integrated circuit plate including veneer main processor unit and multi-disc display unit, in the veneer main processor unit
Inside it is provided with MCU module, acquisition channel module, RJ45 communication module and CANBUS communication module, the quantity of the display unit
More than three pieces, connected between each display unit and veneer main processor unit by data communication line.
It is made of preferably, the present invention measures object multiple measurements interval, the veneer main processor unit is installed on
It measures in object, the display unit is installed on the panel of measurement interval；The acquisition of object is measured only by veneer primary processor list
Member realizes that the display for measuring object collection result is only realized by display unit.
Preferably, MCU module of the present invention is the powerful embedded controller of complete function performance, to alternating voltage
Alternating current fundamental wave generates active power, reactive power, power factor and peak valley ordinary telegram through calculation and measures；The embedded Control
Device supports http network communications protocol simultaneously to generate self-described page with sheet format, with Sudden Changing Rate Starting mode to remote monitoring and administration
Person pushes the abnormality for measuring object.
Preferably, acquisition channel module of the present invention is three-phase alternating voltage connecting terminal, remaining is all alternating current
Flow connecting terminal.
Preferably, RJ45 communication module of the present invention is network communication interface, one end of RJ45 communication module and MCU
Primary processor electrical connection, the other end of RJ45 communication module are associated through the network switch with remote monitoring system.
Preferably, display unit of the present invention only lays four terminals for power supply and CANBUS communication module
Son.
A kind of method for measurement based on the measurement system, it is characterized in that: the method for measurement includes based on exchange
The electrical quantity of sampling calculates workflow, the binding stream between display unit and the acquisition channel module of veneer main processor unit
Journey and the network of RJ45 communication module support directly access and push workflow.
Preferably, the binding between display unit of the present invention and the acquisition channel module of veneer main processor unit
Process are as follows:
Display unit runs 8 single-chip microcontrollers, and veneer main processor unit runs embeded processor；
Veneer main processor unit is directed to current loop, only lays 1 physical sequential for arriving n at the beginning, other related
Parameter is all blank；
Display unit sets four keys, and veneer main processor unit is then not provided with key；
Each relevant parameter of veneer main processor unit current loop is all determined to communicate in interactive process with display unit；
One group of double bond is pressed simultaneously, and display unit shows current loop number, presses the browsable each current loop number of " upper and lower " key,
The current loop that will be chosen is pressed " OK " button to bind to this display unit；
One display unit at least binds 1 current loop；
One display unit at most binds 3 current loops；
When the mark whether bound is 1, show that corresponding current loop has been bound to display unit；
When the mark whether bound is 0, show that corresponding current loop is bound to display unit not yet；
Veneer main processor unit is just by not bound current loop and display unit interactive correspondence；An attempt is tied up
The browsable most current loops of fixed display unit；The browsable current loop of the display unit bound more rearward is fewer；
Another set double bond is pressed simultaneously, and display unit only shows the current loop bound；
It presses " upper and lower " key and shows specific current loop；
It presses " left and right " key display release, specify separate and setting these three function bars of no-load voltage ratio.
Preferably, the electrical quantity of the present invention based on AC sampling calculates workflow are as follows:
The voltage and current circuit of physical order, through " between display unit and veneer main processor unit acquisition channel module
Binding process " after, the electric current formed measurement of three-phase voltage and three tunnels is spaced application packet；
(1) second circulation process: group is applied at one measurement interval of synchronous acquisition per second, according to 128 synchronized samplings of every cycle
It keeps, obtains instantaneous sampling value, the electrical quantity for measuring interval is calculated according to correlation formula；
(2) next second calculates another set and measures interval using group, after all calculating, then is restored to first group of amount
It surveys interval and applies group, so recycle；Obtain measuring the electrical quantity at interval after each cycle calculations for interactive correspondence, integral point obtains
The electrical quantity for measuring interval enters memory space reservation；
(3) it is per second with it is per second between, complete to adopt for 12 points in the time slice after second circulation process task according to every cycle
12 moment numerical value of sample voltage and current fundamental wave calculate effective value and are sentenced when voltage is higher relatively low and electric current is bigger than normal
It is disconnected, and form " time, circuit, mutation numerical value " record.
Preferably, the network of RJ45 block supports of the present invention directly accesses and push workflow are as follows: veneer master
Processor unit TCP 8080 port of IP network run http protocol, with self-described mode express this unit acquisition calculation electricity
The client of tolerance, access veneer main processor unit directly obtains self-described text results, it is not necessary to which verifying point number need not also look into
Ask protocol manual；Documented parameter includes Time of Day integral point, measures compartment name, electrical quantity；And Time of Day hour
Every minute and second millisecond measures compartment name, mutation more limit value.
Compared with prior art, the present invention having the following advantages that and effect: high standard configures hardware device component, preferentially examines
Consider the support to telecommunication and automatic detecting, retains tradition display.From a distribution system in terms of centralized monitoring system angle,
Only the device of units, structure are simple.Accessible, push and WE.Reasonable in design, easy to use, measurement efficiency is high.
The present invention can lay a plurality of feeding circuit in a face power distribution cabinet, and the acquisition of power distribution cabinet electric amount is main by veneer
It manages device unit to realize, supply cell installs display unit.The binding parameter (interval name, no-load voltage ratio, separate) of current loop is by showing
Unit key presses flow setting, forms three-phase voltage and three-phase current application group.MCU module calculates voltage and current application group
To active power, reactive power, power factor, peak valley ordinary telegram measurement；Self-described page is generated with sheet format, is started with Sudden Changing Rate
Push abnormality.Veneer main processor unit works independently to be communicated with remote monitoring system, and display unit is in key activation
After work.The hardware device component of the main power grid measurement of main equipment is applied to power distribution network by the present invention, and technical products of the invention are
The infrastructure that measures comprehensively of power distribution cabinet of intelligent distribution network, energy internet.
Detailed description of the invention
Fig. 1 is distribution system low-voltage cabinet composition schematic diagram.
Fig. 2 is veneer main processor unit acquisition circuit schematic layout pattern of the present invention.
Fig. 3 is veneer main processor unit of the present invention and display unit composition schematic diagram.
Fig. 4 is that the invention shows unit front schematic views.
Fig. 5 is veneer main processor unit of the present invention and remote monitoring system composition schematic diagram.
Fig. 6 is synchronized sampling of the present invention and Sudden Changing Rate judgement record circulation process schematic diagram.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
In order to which the contents of the present invention are discussed in detail, the concept for measuring object, measurement interval and AC sampling is carried out below
Definition.
Measure object: the technology of the present invention and application range are low-voltage distribution field, measure object and refer in particular to low-voltage distribution cabinet, low
It is press-fitted electronic box, low-voltage-powered case.The cabinet case is an entirety in structure, however laid inside cabinet case can independent division it is more
Feeder assembly.This with high-tension switch cabinet be it is completely different, high-voltage board is a whole trip only feedback in structure
Line loop.
It measures interval: refering in particular to measure the feeder clearance of an independent division inside object.The feeder clearance has independent
Division position instruction, independent division operating member and the feeder assembly Current Voltage electrical quantity.
AC sampling: the transmitter direct current relative to AC sampling samples.The sampling of transmitter direct current is will to need to be measured
Parameter (such as Current Voltage temperature and humidity, pressure) is converted to standard DC voltage 1-5V.It is measured between parameter and DC voltage
There are determining quantitative relations.However AC current voltage is waveform, AC sampling refers in a cycle (namely 20 millis
Second) in directly acquire current-voltage waveform 32 times, obtain 32 sampled point moment numerical value.Respective counts are utilized based on these sampled values
Learn the process and method abbreviation AC sampling that Current Voltage value is calculated in formula.
Low-voltage distribution is divided into total input-wire, common feeder line, capacitor and grid-connected circuit charge circuit.As shown in Figure 1, this is low
Compress switch 8 distribution intervals of cabinet.In general supply cell is the amount doesn't matter in low voltage feeder cabinet, less can 3 interval, mostly up to 18
A interval.Each feeder clearance has independent division position instruction, independent division operating member.
More importantly: the electrical quantity such as the voltage and current in circuit (including active power, reactive power, function must be measured
Rate factor, electricity etc.).All measurement intervals in object are measured all on a bus, three-phase voltage is identical, each amount
Surveying interval has the three-phase current belonged to self.
The measurement system of concentrated collection distribution display in the present embodiment includes veneer main processor unit and display unit.
As shown in Fig. 2, the acquisition channel module of veneer main processor unit is built upon on the basis of AC Data,
It has been laid out voltage wiring terminal only 3 (three-phase voltage) thus, and current wiring terminal has then been laid out very much, can be 12 electricity
Flow connecting terminal, 15 current wiring terminals, 18 current wiring terminals, 21 current wiring terminals, 24 current terminals
Son, 27 current wiring terminals.
Current wiring terminal can 3 one group be grouped, be suitble to measure interval A, B, C three-phase current acquire entirely.?
Can 1 connecting terminal it is independent in groups, select a phase only to be suitble to measure interval and be acquired.One is only acquired when measuring interval
Xiang Shi, veneer main processor unit acquisition channel are laid out 3 road voltage wiring terminal, 12 road current wiring terminal.
When measurement interval, A, B, C three-phase current acquire entirely, veneer main processor modules acquisition channel is laid out 3 road voltages and connects
The corresponding 4 measurements interval of 12 road current wiring terminal of line terminals；Veneer main processor modules acquisition channel is laid out 3 road voltage links
The corresponding 5 measurements interval of 15 road current wiring terminal of terminal；Veneer main processor modules acquisition channel is laid out 3 road voltage terminals
The sub corresponding 6 measurements interval of 18 road current wiring terminals；Veneer main processor modules acquisition channel is laid out 3 road voltage wiring terminals
The corresponding 7 measurements interval of 21 road current wiring terminals；Veneer main processor modules acquisition channel is laid out 3 road voltage wiring terminals 24
The corresponding 8 measurements interval of road current wiring terminal；Veneer main processor modules acquisition channel is laid out 3 road voltage wiring terminal, 27 tunnel
The corresponding 9 measurements interval of current wiring terminal.
When measurement object a part measures interval acquisition monophase current and another part measurement is spaced acquisition three-phase current,
Veneer main processor unit acquisition channel is laid out 3 road voltage wiring terminals and appropriate number of current wiring terminal.
MCU module, acquisition channel module, RJ45 communication module are provided in the monolithic integrated circuit plate of veneer main processor unit
With CANBUS communication module, wherein CANBUS communication module with display unit for connecting.
Veneer main processor unit is single plate structure, that is, the layout in a circuit board (such as long 35cm, wide 15cm)
Each functional component and module, without bus slot also without data/address bus；On veneer main processor unit casing structure only
Power supply and run indicator interface, without key also without display unit.Veneer main processor unit is electricity to external wiring terminal
Line terminals, current wiring terminal, power supply terminal, CANBUS communication terminal are crimped, and RJ45 network interface is directly drawn by MCU module
To veneer main processor unit cabinet.
MCU module can be Rabbit3000.
As shown in Figure 3: veneer main processor unit is by CANBUS communication module and measures multiple display lists in object
Member links together.Display unit is mounted on the panel for measuring interval.
It is as shown in Figure 4: display unit with the single-chip microcontroller (such as Atmel) with CANBUS interface be core, further include liquid crystal or
Charactron component, run indicator and power supply indicator, 4 keys etc..Display unit laid for power supply (as+24V,
GND four connecting terminals of (A+, B-)) are communicated with CANBUS.
Display unit installation dimension is grown within 10cm, wide within 4cm, and deep within 4cm, display unit is suitble to
Difference measures interval installation.
It is as shown in Figure 5: unit (a such as school, a government departments and institutions, a workshop) distribution system low pressure
Power distribution room has laid multi-panel low-voltage cabinet, and every face low-voltage cabinet corresponds to one piece of veneer main processor unit, has in a distribution system more
Block veneer main processor unit, be respectively designated as veneer main processor unit 1, veneer main processor unit 2 ..., veneer master
Processor unit m, m are the integer greater than 2；Each veneer main processor unit is connect by cable with the network switch；Long-range prison
Equipment is maked an inspection tour in control system and inspection may have access to the data information of each veneer main processor unit by the network switch.
As shown in Figure 6: the binding process between display unit and the acquisition channel module of veneer main processor unit is as follows.
Display unit runs 8 single-chip microcontrollers, and veneer main processor unit runs embeded processor.
Application software is the core of two units.Between display unit and the acquisition channel module of veneer main processor unit
Binding process refer exclusively to software operational process.
Veneer main processor unit is directed to current loop, only lays physical sequential as shown in Figure 2 (1 arrives n) at the beginning,
Other relevant parameters (such as whether bound mark, the unit name of binding, binding display unit digital number code,
It is no-load voltage ratio, separate) it is all blank.
Display unit sets four keys, and veneer Main Processor Unit is then not provided with key.
Each relevant parameter of veneer main processor unit current loop is all determined to communicate in interactive process with display unit.
One group of double bond is pressed simultaneously: display unit shows current loop number, presses the browsable each current loop number of " upper and lower " key,
The current loop that will be chosen is pressed " OK " button to bind to this display unit.
One display unit at least binds 1 current loop；One display unit at most binds 3 current loops.Whether
Having bound mark is 1, shows that corresponding current loop has been bound to display unit.Whether having bound mark is 0,
Show that corresponding current loop is bound to any display unit not yet.
Veneer main processor unit is just by not bound current loop and display unit interactive correspondence.An attempt is tied up
Fixed display unit browses most current loops；The browsable current loop of the display unit bound rearward is fewer and fewer.
Press display unit only shows the current loop bound to another set double bond simultaneously；" upper and lower " key is pressed to show
Specific current loop；It presses " left and right " key and shows three function bars (discharge, specify separate, setting no-load voltage ratio)；It is each to press " OK " button browsing
Current loop number, specify it is separate, setting no-load voltage ratio (100A 5A, 150A 50,330A 5A ...).1) release binding；2) A is specified
B C is separate；3) no-load voltage ratio numerical value (20,30,66) are set.
As shown in figure 3, a veneer main processor unit and multiple display units form a system, this system is common
It completes to measure the measurement that object respectively measures interval as shown in Figure 1.
The current loop of physical sequential (1 arrives n) arrangement as shown in Figure 2, just imparts application characteristic, i.e. three tunnels are one
Group, the separate of three road electric currents, no-load voltage ratio, the corresponding display unit digital number code of the group etc..Digital number is according to " top to bottm, a left side are arrived
The mode on the right side " assigns number.
Electrical quantity calculation workflow based on AC sampling is as follows.
The voltage and current circuit of physical order as shown in Figure 2, through " display unit and veneer main processor unit acquisition channel
After binding process between module ", the electric current formed measurement of three-phase voltage and three tunnels is spaced application packet；Such application group meeting
There are many groups, is exactly as shown in Figure 18 groups.
(1) second circulation process: group is applied at one measurement interval of synchronous acquisition per second, according to 128 synchronized samplings of every cycle
It keeps, obtains instantaneous sampling value, the electrical quantity for measuring interval is calculated according to correlation formula.Between calculating used in the present invention measures
Every the calculation formula of electrical quantity be the prior art, be to those skilled in the art common knowledge.
(2) next second calculating another set measures interval and applies group, after all calculating, then is restored to first group of measurement
Group is applied at interval, is so recycled.The electrical quantity (U, I, P, Q, COS@, kWH etc.) for obtaining measuring interval after each cycle calculations supplies
Interactive correspondence is used.The electrical quantity that integral point obtains measuring interval enters memory space reservation.
(3) it is per second with it is per second between, complete in the time slice after second circulation process task, according to 12 points of every cycle
12 moment numerical value of (every 1.66ms) sampled voltage current first harmonics, calculate effective value, and voltage is higher relatively low and electric
When flowing bigger than normal, judged, and forms " time, circuit, mutation numerical value " record.
The network of RJ45 block supports directly accesses as follows with push workflow.
Veneer main processor unit pass through between the network switch and remote monitoring system TCP under IP frame according to matching
Electric industry byte protocol such as CDT or IEC60870-5-101 etc. carry out data communication.Distribution industry agreement is by synchronization character, Add, function
It can code, point number, data volume, cyclic redundancy check.Sender's (veneer main processor unit) of byte type agreement and reciever are (long-range
Monitoring system) between must by protocol manual consult point number verify point number can explain data volume meaning, this consult point number
It is very laborious time-consuming to verify point number process.
And veneer main processor unit TCP 8080 port of IP network run http protocol, express this with self-described mode
The electrical quantity of unit acquisition calculation.The client of access veneer main processor unit directly obtains self-described text results, it is not necessary to
Verify point number also need not vlan query protocol VLAN handbook, it is convenient, fast.
(1) Time of Day integral point, measurement compartment name, A phase current, B phase current, C phase current.
Such as 00:00,2 laboratory building on March 5th, 2016,3A, 2.9A, 3.1A.
On March 5th, 2016 01:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 02:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 03:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 04:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 05:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 06:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 07:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 08:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 09:00,2 laboratory building, 53A, 52.9A, 53.1A.
On March 5th, 2016 10:00,2 laboratory building, 63A, 62.9A, 63.1A.
On March 5th, 2016 11:00,2 laboratory building, 73A, 72.9A, 73.1A.
On March 5th, 2016 12:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 13:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 14:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 15:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 16:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 17:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 18:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 19:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 20:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 21:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 22:00,2 laboratory building, 3A, 2.9A, 3.1A.
On March 5th, 2016 23:00,2 laboratory building, 3A, 2.9A, 3.1A.
(2) limit value is got in the small Hour Minute Second millisecond of Time of Day, measurement compartment name, mutation.
Such as 01:00.0555 milliseconds of June 15 in 2016, No. 2 laboratory buildings, AB phase current 321A.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to structure of the invention example explanation described in this specification.It is all according to
According to equivalence changes or simple change that the invention patent design structure, feature and principle is done, it is included in this hair
In the protection scope of bright patent.Those skilled in the art can do described specific embodiment various
The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (6)
1. a kind of method for measurement based on measurement system, the measurement system includes that veneer main processor unit and multi-disc display are single
Member is provided with MCU module, acquisition channel module, RJ45 communication mould in the monolithic integrated circuit plate in the veneer main processor unit
Block and CANBUS communication module, the quantity of the display unit are three pieces or more, each display unit and veneer primary processor list
It is connected between member by data communication line, it is characterised in that: the method for measurement includes the electrical quantity calculation based on AC sampling
Binding process and RJ45 communication between the acquisition channel module of workflow, display unit and veneer main processor unit
The network of block supports directly accesses and push workflow；
Binding process between the display unit and the acquisition channel module of veneer main processor unit are as follows:
Display unit runs 8 single-chip microcontrollers, and veneer main processor unit runs embeded processor；
Veneer main processor unit is directed to current loop, only lays 1 physical sequential for arriving n, other relevant parameters at the beginning
It is all blank；
Display unit sets four keys, and veneer main processor unit is then not provided with key；
Each relevant parameter of veneer main processor unit current loop is all determined to communicate in interactive process with display unit；
One group of double bond is pressed simultaneously, and display unit shows current loop number, is pressed the browsable each current loop number of " upper and lower " key, is pressed
" OK " key binds the current loop chosen to this display unit；
One display unit at least binds 1 current loop；
One display unit at most binds 3 current loops；
When the mark whether bound is 1, show that corresponding current loop has been bound to display unit；
When the mark whether bound is 0, show that corresponding current loop is bound to display unit not yet；
Veneer main processor unit is just by not bound current loop and display unit interactive correspondence；An attempt binding
The browsable most current loops of display unit；The browsable current loop of the display unit bound more rearward is fewer；
Another set double bond is pressed simultaneously, and display unit only shows the current loop bound；
It presses " upper and lower " key and shows specific current loop；
It presses " left and right " key display release, specify separate and setting these three function bars of no-load voltage ratio；
The electrical quantity based on AC sampling calculates workflow are as follows:
The voltage and current circuit of physical order, through " tying up between display unit and veneer main processor unit acquisition channel module
After constant current journey ", the electric current formed measurement of three-phase voltage and three tunnels is spaced application packet；
(1) second circulation process: group is applied at one measurement interval of synchronous acquisition per second, is kept according to 128 synchronized samplings of every cycle,
Instantaneous sampling value is obtained, the electrical quantity for measuring interval is calculated according to correlation formula；
(2) next second calculates another set and measures interval using group, after all calculating, then is restored between first group of measurement
Every applying group, so recycle；Obtain measuring the electrical quantity at interval after each cycle calculations for interactive correspondence, integral point is measured
The electrical quantity at interval enters memory space reservation；
(3) it is per second with it is per second between, complete in the time slice after second circulation process task, according to every 12 point sampling of cycle electricity
12 moment numerical value of current voltage fundamental wave calculate effective value and are judged when voltage is higher relatively low and electric current is bigger than normal,
And form " time, circuit, mutation numerical value " record；
The network of the RJ45 block supports directly access with push workflow are as follows: veneer main processor unit TCP IP network
8080 port of network runs http protocol, and the electrical quantity of this unit acquisition calculation is expressed with self-described mode, accesses veneer main process task
The client of device unit directly obtains self-described text results, it is not necessary to which verifying point number also need not vlan query protocol VLAN handbook；It is documented
Parameter includes Time of Day integral point, measures compartment name, electrical quantity；And the small Hour Minute Second millisecond of Time of Day, measurement interval name
Claim, limit value is got in mutation.
2. the method for measurement according to claim 1 based on measurement system, it is characterised in that: measure object by multiple measurements
Interval composition, the veneer main processor unit, which is installed on, to be measured in object, and the display unit is installed on measurement interval panel
On；The acquisition for measuring object is only realized that the display for measuring object collection result is only single by display by veneer main processor unit
Member is realized.
3. the method for measurement according to claim 1 based on measurement system, it is characterised in that: the MCU module is function
The embedded controller of complete powerful, to alternating voltage alternating current fundamental wave through calculation generate active power, reactive power,
Power factor and peak valley ordinary telegram measurement；The embedded controller is supported http network communications protocol and is generated certainly with sheet format
Page is described, pushes the abnormality for measuring object to remote monitoring and administration person with Sudden Changing Rate Starting mode.
4. the method for measurement according to claim 1 based on measurement system, it is characterised in that: the acquisition channel module is
Three-phase alternating voltage connecting terminal, remaining is all alternating current connecting terminal.
5. the method for measurement according to claim 1 based on measurement system, it is characterised in that: the RJ45 communication module is
Network communication interface, one end of RJ45 communication module and MCU primary processor are electrically connected, and the other end of RJ45 communication module is through net
Network interchanger is associated with remote monitoring system.
6. the method for measurement according to claim 1 based on measurement system, it is characterised in that: the display unit is only laid
Four connecting terminals for power supply and CANBUS communication module.
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