CN105929223A - Measurement system enabling centralized acquisition and distributed display and measurement method - Google Patents
Measurement system enabling centralized acquisition and distributed display and measurement method Download PDFInfo
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- CN105929223A CN105929223A CN201610217644.5A CN201610217644A CN105929223A CN 105929223 A CN105929223 A CN 105929223A CN 201610217644 A CN201610217644 A CN 201610217644A CN 105929223 A CN105929223 A CN 105929223A
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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
Abstract
The present invention relates to a measurement system enabling centralized acquisition and distributed display and a measurement method enabling centralized acquisition and distributed display. Measurement systems and measurement methods which are reasonable in structure design, convenient to use and high in measurement efficiency do not exist. The measurement system of the invention is characterized in that the measurement system includes single-board main processor units and a plurality of display units; an MCU module, an acquisition channel module, an RJ45 communication module and a CANBUS communication module are built in the monolithic circuit board of each single-board main processor unit; at least three display units are adopted; and the display units are connected with the single-board main processor units through data communication lines. The measurement method is characterized by including the following work flows: an alternating current sampling-based electrical quantity calculation work flow; a binding flow between the display units and the acquisition channel modules of the single-board main processor units; and an RJ45 network communication module-supported network direct access and push work flow. The measurement system and the measurement method of the invention have the advantages of reasonable design, convenient use and high measuring efficiency.
Description
Technical field
The present invention relates to the applied technical fields such as the collection of electric parameters and Centralized Monitoring management, be specifically related to a kind of concentration and adopt
The measurement system of collection distribution display and method for measurement.
Background technology
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.In today that electric automobile and photovoltaic generation are increasingly popularized, low containing distributed power source and all kinds of charging pile
It is press-fitted electrical network and becomes main flow distribution net work structure.To measure power distribution network be distribution network planning comprehensively, design, run, safeguard,
The basic technology means recovered and measure.
380V low-voltage distribution is divided into total input-wire, common feeder line, capacitor and grid-connected loop charge circuit.Low-voltage distribution is only
Only total input-wire loop is independently to take a low-tension switch cabinet, and other is then that a low tension switch cashier's office in a shop lays multiloop, at most
Time there will be low-voltage cabinet and lay 9 layers and amount to loops, 18 intervals.
Inlet wire, feeder line, capacitor loops, grid-connected loop, charge circuit etc. all on same bus, the three-phase in these loops
Voltage is common, and interval, each loop mainly size of current is different and can independently close a floodgate or separating brake in interval.As it is shown in figure 1, should
Power distribution cabinet has laid loop, eight intervals.
Multiaspect low pressure has often been laid a school, government departments and institutions, a workshop low-voltage power distribution room (room)
Cabinet, the most hundreds of interval of its feeding circuit.As an electric bus charging station by a transformator, incoming line cabinet, 3
6 charging interval, loop cabinets and capacitor panel composition, this electric bus charging station has 18 quick charge stakes.
Low-voltage distribution loop measurement technology means mainly include network instrument technology, digital displaying meter technology, multiloop at present
Observation and control technology etc..
Network instrument technology: with single-chip microcomputer as core component, has laid 3 road electric current 3 road voltage acquisition circuits, 4 way switch
Parts, network instrument and the measurements such as amount input 4 way switch amount output loops, RS485 order circuit, man machine interface, casing structure
Interval one_to_one corresponding, has how many intervals to be necessary for how many network instruments of layout.
Digital displaying meter technology: with 8 single-chip microcomputers as core component, lays 3 current loops, numeral method parts, little machine
The parts such as shell structure；Digital displaying meter starting point is to substitute mechanical indicating pointer table, installs in each distribution interval layout, it is simple to patrol and examine people
Member's viewing.
Multiloop observation and control technology: with the upper (lower) portion of whole power distribution cabinet or power distribution cabinet as object, with embedded controller as core
Heart parts, have laid three-phase voltage loop and multichannel current loop, On-off signal output loop, RS485 order circuit, man-machine
The parts such as interface, casing structure, multiloop measure and control device is and power distribution cabinet one_to_one corresponding, and a power distribution cabinet is only equipped with more than one
Loop measure and control device.
" unattended, concentration operation maintenance " is distribution system Main Patterns, and staff patrols and examines or robot patrols and examines and is
Important daily measure.Low-voltage distribution measurement technology must take into account the support to remote centralized control, it is also necessary to conveniently patrols and examines on the spot
Check.Digital displaying meter itself does not has communication interface, digital displaying meter to watch the most on the spot.Multifunctional measurement and control device is in loop, each interval
There is no display interface, give to patrol and examine on the spot and bring very big inconvenience.Network instrument is because for distribution interval layout designs, more
Because it is contemplated that cost and select low specification device component so that long distance control system needs the network instrument quantity of link maintenance non-
Chang Duo, the fault rate of network instrument own is high, thus causes complex system.
The hardware resource that main equipment (such as main transformer) main electrical network (110KV voltage) measurement technology is ripe is joined with high standard
Put device component and apply at power distribution network, with low pressure cabinet for necessary to liking, adopt " measurement is concentrated, is respectively spaced display " measure
It is one of the technical measures that measure of power distribution network.
If publication date is on October 08th, 2014, in the Chinese patent of Publication No. CN104090187A, disclose one
Ring main unit electric parameters gathers and failure recording device, and this ring main unit electric parameters collection and failure recording device are provided simultaneously with electric parameters
Gather and fault logging function, it can be difficult to realize the function of concentrated collection.Publication date is on 06 08th, 2011, Publication No.
In the Chinese patent of CN102087308A, disclose a kind of power system electric parameters acquisition testing & analysis instrument and method, this electric power
System electrical amount acquisition testing & analysis instrument is difficult to the function of concentrated collection.
Currently there are no a kind of reasonable in design, easy to use, measure the amount of the high concentrated collection distribution display of efficiency
Examining system and method for measurement.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency present in prior art, and a kind of reasonable in design be provided,
Easy to use, measure measurement system and the method for measurement of the high concentrated collection distribution display of efficiency.
The present invention solves the spy that the problems referred to above be the technical scheme is that the measurement system of this concentrated collection distribution display
Point is: include veneer main processor unit and multi-disc display unit, the monolithic integrated circuit plate in described veneer main processor unit
Inside it is provided with MCU module, acquisition channel module, RJ45 communication module and CANBUS communication module, the quantity of described display unit
Being more than three, each display unit is connected by data communication line between veneer main processor unit.
As preferably, the present invention measures object and is made up of multiple measurement intervals, and described veneer main processor unit is installed on
In measurement object, described display unit is installed on the panel of measurement interval；Measure the collection of object only by veneer primary processor list
Unit realizes, and the display measuring object collection result is only realized by display unit.
As preferably, MCU module of the present invention is the embedded controller that complete function performance is powerful, to alternating voltage
Alternating current first-harmonic generates active power, reactive power, power factor and peak valley ordinary telegram tolerance through calculation；Described embedded Control
Device is supported http network communications protocol and generates self-described page, with Sudden Changing Rate Starting mode to remote monitoring and administration with sheet format
Person pushes the abnormality measuring object.
As preferably, acquisition channel module of the present invention is three-phase alternating voltage binding post, and remaining is all alternating current
Stream binding post.
As preferably, RJ45 communication module of the present invention is network communication interface, one end of RJ45 communication module and MCU
Primary processor is electrically connected, and the other end of RJ45 communication module is associated with long distance control system through the network switch.
As preferably, four terminals for power supply Yu CANBUS communication module only laid by display unit of the present invention
Son.
A kind of method for measurement based on described measurement system, its feature is: described method for measurement includes based on exchange
The electric parameters calculation workflow of sampling, the binding stream between the acquisition channel module of display unit and veneer main processor unit
Journey, and RJ45 communication module support network directly access and push workflow.
As preferably, the binding between the acquisition channel module of display unit of the present invention and veneer main processor unit
Flow process is:
Display unit runs 8 single-chip microcomputers, and veneer main processor unit runs flush bonding processor；
Veneer main processor unit, for current loop, only lays the physical sequential of 1 to n, other relevant parameter when initial
It is all blank；
Display unit sets four buttons, and veneer main processor unit is then not provided with button；
The each relevant parameter of veneer main processor unit current loop is all treated to determine in display unit communication interaction；
One group of double bond is pressed simultaneously, display unit display current loop number, presses the browsable each current loop number of " up and down " key, presses
The current loop chosen is bound to this display unit by " OK " key；
1 current loop at least bound by one display unit；
3 current loops at most bound by one display unit；
When bound when being masked as 1, show correspondence current loop be bound to display unit；
When bound when being masked as 0, show correspondence current loop be not the most bound to display unit；
Veneer main processor unit is just by the most bound current loop and display unit interactive correspondence；Attempt binding for first
The browsable most current loops of display unit；The browsable current loop of display unit bound the most rearward is the fewest；
Another set double bond is pressed simultaneously, and display unit only shows the current loop bound；
Press " up and down " key and show concrete current loop；
Press the display release of " left and right " key, specify separate and no-load voltage ratio these three function bar is set.
As preferably, electric parameters based on AC sampling of the present invention calculation workflow is:
The voltage x current loop of physical order, through " tying up between display unit and veneer main processor unit acquisition channel module
Constant current journey " after, the electric current formed measurement of three-phase voltage and three tunnels is spaced application packet；
(1) second circulation process: synchronous acquisition per second measures interval set of applications, keeps according to 128 synchronized samplings of every cycle,
Obtain instantaneous sampling value, calculate the electric parameters measuring interval according to correlation formula；
(2) next second, calculating another set measures interval set of applications, after all calculating, then is restored between first group of measurement
Every set of applications, so circulate；The electric parameters every time obtaining measuring interval after cycle calculations is measured for interactive correspondence, integral point
The electric parameters at interval enters memory space and retains；
(3) between per second and per second, in the time slice after completing second circulation process task, according to every cycle 12 point sampling electricity
12 moment numerical value of current voltage first-harmonic, calculate effective value, when voltage is higher on the low side and electric current is bigger than normal, judge,
And form " time, loop, sudden change numerical value " record.
As preferably, the network of RJ45 block supports of the present invention directly accesses and pushes workflow and be: veneer master
Processor unit TCP IP network 8080 port run http protocol, with self-described mode express the collection of this unit calculation electricity
Tolerance, the client accessing veneer main processor unit directly obtains self-described text results, it is not necessary to examines period and also need not look into
Ask protocol manual；Described parameter includes Time of Day integral point, measures compartment name, electric parameters；And Time of Day hour
Every minute and second millisecond, measurement compartment name, sudden change more limit value.
The present invention compared with prior art, has the following advantages and effect: high standard configuration hardware device parts, preferentially examines
Consider the support to telecommunication Yu automatic detecting, retain tradition display.Stand in centralized monitoring system angle and see a distribution system,
The only device of units, simple in construction.Can access, push and WE.Reasonable in design, easy to use, measure efficiency high.
The present invention can lay a plurality of feeding circuit in a power distribution cabinet, and the collection of power distribution cabinet electric amount is main by veneer
Reason device unit realizes, and supply cell installs display unit.The binding parameter of current loop (interval name, no-load voltage ratio, separate) is by showing
Unit button presses flow setting, forms three-phase voltage and three-phase current set of applications.Voltage x current set of applications is calculated by MCU module
To active power, reactive power, power factor, peak valley ordinary telegram tolerance；Generate self-described page with sheet format, start with Sudden Changing Rate
Push abnormality.Veneer main processor unit works alone and long distance control system communication, and display unit is at key activation
Rear work.The hardware device parts of main for main equipment power grid measurement are applied to power distribution network by the present invention, and the technical products of the present invention is
The infrastructure that intelligent distribution network, the power distribution cabinet of energy the Internet measure comprehensively.
Accompanying drawing explanation
Fig. 1 is that distribution system low-voltage cabinet forms schematic diagram.
Fig. 2 is veneer main processor unit acquisition circuit schematic layout pattern of the present invention.
Fig. 3 is that veneer main processor unit of the present invention forms schematic diagram with display unit.
Fig. 4 is display unit front schematic view of the present invention.
Fig. 5 is that veneer main processor unit of the present invention forms schematic diagram with long distance control system.
Fig. 6 is that synchronized sampling of the present invention judges record circulation process schematic diagram with Sudden Changing Rate.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are to this
Bright explanation and the invention is not limited in following example.
Embodiment.
In order to present disclosure is discussed in detail, below the concept measuring object, measurement interval and AC sampling is carried out
Definition.
Measure object: the technology of the present invention and range of application 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.This cabinet case is structurally an entirety, but laid inside cabinet case can be more than independent deciliter
Bar feeder assembly.This is the most different with high-tension switch cabinet, and high-voltage board is an overall trip only feedback in structure
Line loop.
Measure interval: refer in particular to the feeder clearance of independent deciliter within object of measurement.This feeder clearance has independent
The instruction of deciliter position, independent deciliter functional unit and this feeder assembly current/voltage electric parameters.
AC sampling: sample relative to the transmitter direct current of AC sampling.The sampling of transmitter direct current is to be measured needing
Parameter (such as current/voltage humiture, pressure etc.) is converted to standard DC voltage 1-5V.Between measured parameter and DC voltage
There is the quantitative relation determined.But AC current voltage is waveform, AC sampling refers at a cycle (namely 20 milli
Second) in direct collection current-voltage waveform 32 times, obtain 32 sampled point moment numerical value.Respective counts is utilized based on these sampled values
Learn formula and be calculated the process and method abbreviation AC sampling of current/voltage value.
Low-voltage distribution is divided into total input-wire, common feeder line, capacitor and grid-connected loop charge circuit.As it is shown in figure 1, this is low
Compress switch 8 distribution intervals of cabinet.Generally speaking in low voltage feeder cabinet, supply cell is the amount doesn't matter, less can 3 intervals, how up to 18
Individual interval.Each feeder clearance has independent deciliter position instruction, independent deciliter functional unit.
What is more important: the electric parameters such as voltage x current that must measure loop (includes active power, reactive power, merit
Rate factor, electricity etc.).The all measurements measured in object are spaced all on a bus, and three-phase voltage is identical, respectively measures
Survey to be spaced to have and belong to the three-phase current controlled oneself.
The measurement system of the concentrated collection distribution display in the present embodiment includes veneer main processor unit and display unit.
As in figure 2 it is shown, on the basis of the acquisition channel module of veneer main processor unit is built upon AC Data,
The voltage wiring terminal only 3 (three-phase voltage) for this layout, current wiring terminal then layout is a lot, can be 12 electricity
Stream binding post, 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, with applicable measure interval A, B, C three-phase current entirely gather.Also
Can 1 binding post independent the most in groups, only select a phase be acquired with the applicable interval that measures.One is only gathered when measuring interval
Phase time, voltage wiring terminal 12 road, veneer main processor unit acquisition channel layout 3 road current wiring terminal.
When measuring interval A, B, C three-phase current and entirely gathering, veneer main processor modules acquisition channel layout 3 road voltage connects
Corresponding 4 of line terminals 12 road current wiring terminal measures interval；Veneer main processor modules acquisition channel layout 3 road voltage link
Corresponding 5 of terminal 15 road current wiring terminal measures interval；Veneer main processor modules acquisition channel layout 3 road voltage terminal
Corresponding 6 of son 18 road current wiring terminal measures interval；Veneer main processor modules acquisition channel layout 3 road voltage wiring terminal
Corresponding 7 of 21 road current wiring terminals measure interval；Veneer main processor modules acquisition channel layout 3 road voltage wiring terminal 24
Corresponding 8 of road current wiring terminal measures interval；Voltage wiring terminal 27 tunnel, veneer main processor modules acquisition channel layout 3 road
Corresponding 9 of current wiring terminal measures interval.
When measuring object part measurement interval collection monophase current and another part measures interval collection three-phase current,
Veneer main processor unit acquisition channel layout 3 road voltage wiring terminal and appropriate number of current wiring terminal.
MCU module, acquisition channel module, RJ45 communication module it is provided with in the monolithic integrated circuit plate of veneer main processor unit
With CANBUS communication module, wherein, CANBUS communication module is for being connected with display unit.
Veneer main processor unit is single plate structure, namely in a circuit board (such as long 35cm, wide 15cm) interior layout
Each functional part and module, do not have data/address bus without bus slot yet；On veneer main processor unit casing structure only
Power supply and run indicator interface, do not have button not have display unit yet.Veneer main processor unit is electricity to external wiring terminal
Compression bonded line terminal, current wiring terminal, power supply terminal, CANBUS communication terminal, 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 single with the multiple displays measured in object by CANBUS communication module
Unit links together.Display unit is arranged on the panel measuring interval.
As shown in Figure 4: display unit with the single-chip microcomputer (such as Atmel) of band CANBUS interface as core, also include liquid crystal or
Charactron parts, run indicator and power supply indicator, 4 buttons etc..Display unit laid for power supply (as+24V,
GND) with four binding posts of CANBUS communication (A+, B-).
The length of display unit installation dimension is within 10cm, wide within 4cm, and deeply within 4cm, display unit is suitable for
The different intervals that measure are installed.
As shown in Figure 5: unit (such as a school, government departments and institutions, an a workshop) distribution system low pressure
Power distribution room has laid multiaspect low-voltage cabinet, every corresponding one piece of veneer main processor unit of low-voltage cabinet, has many in a distribution system
Block veneer main processor unit, is respectively designated as veneer main processor unit 1, veneer main processor unit 2 ..., veneer master
Processor unit m, m are the integer more than 2；Each veneer main processor unit is connected with the network switch by netting twine；Remotely prison
Ore-controlling Role and patrol and examine tour equipment and be may have access to the data message of each veneer main processor unit by the network switch.
As shown in Figure 6: the binding flow process between the acquisition channel module of display unit and veneer main processor unit is as follows.
Display unit runs 8 single-chip microcomputers, and veneer main processor unit runs flush bonding processor.
Application software is the core of two unit.Between the acquisition channel module of display unit and veneer main processor unit
Binding flow process refer exclusively to running software flow process.
Veneer main processor unit, for current loop, only lays physical sequential (1 arrives n) as shown in Figure 2 when initial,
Other relevant parameter (such as whether bound mark, the unit name of binding, the display unit digital number code of binding,
No-load voltage ratio, separate) it is all blank.
Display unit sets four buttons, and veneer Main Processor Unit is then not provided with button.
The each relevant parameter of veneer main processor unit current loop is all treated to determine in display unit communication interaction.
One group of double bond is pressed simultaneously: display unit display current loop number, presses the browsable each current loop number of " up and down " key,
Press " OK " button and the current loop chosen is bound to this display unit.
1 current loop at least bound by one display unit；3 current loops at most bound by one display unit.Whether
Bind and be masked as 1, shown that the current loop of correspondence has been bound to display unit.Bind and be masked as 0,
Show that the current loop of correspondence is not the most bound to any display unit.
Veneer main processor unit is just by the most bound current loop and display unit interactive correspondence.First trial is tied up
Fixed display unit, browses most current loop；The browsable current loop of display unit bound rearward is fewer and feweri.
Another set double bond is pressed display unit simultaneously and is only shown the current loop bound；Press " up and down " key to show
Concrete current loop；Press " left and right " key show three function bar (discharge, specify separate, no-load voltage ratio is set)；Press " OK " button and browse respectively
Current loop number, it is intended that separate, arrange 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) is set.
As it is shown on figure 3, a veneer main processor unit forms a system with multiple display units, this system is common
Complete to measure object as shown in Figure 1 and respectively measure the measurement at interval.
The current loop that physical sequential (1 to n) as shown in Figure 2 arranges, just imparts application characteristic, and i.e. three tunnels are one
Group, separate, the display unit digital number code etc. that no-load voltage ratio, this group are corresponding of three road electric currents.Digital number is according to " top to bottm, a left side is arrived
Right " mode give numeral.
Electric parameters based on AC sampling calculation workflow is as follows.
The voltage x current loop of physical order as shown in Figure 2, through " display unit and veneer main processor unit acquisition channel
Binding flow process between module " after, the electric current formed measurement of three-phase voltage and three tunnels is spaced application packet；Such set of applications meeting
There are a lot of groups, are exactly 8 groups as shown in Figure 1.
(1) second circulation process: synchronous acquisition per second measures interval set of applications, according to 128 synchronized samplings of every cycle
Keep, obtain instantaneous sampling value, calculate the electric parameters measuring interval according to correlation formula.Between calculating used in the present invention measures
Every the computing formula of electric parameters be prior art, be common knowledge to those skilled in the art.
(2) next second calculates another set and measures interval set of applications, after all calculating, then is restored to first group of measurement
Interval set of applications, so circulates.The electric parameters (U, I, P, Q, COS@, kWH etc.) every time obtaining measuring interval after cycle calculations supplies
Interactive correspondence is used.Integral point obtains measuring the electric parameters at interval and enters memory space reservation.
(3) between per second and per second, in the time slice after completing second circulation process task, according to every cycle 12 point
12 moment numerical value of (every 1.66ms) sampled voltage current first harmonics, calculate effective value, and voltage is higher on the low side and electric
When flowing bigger than normal, judge, and form " time, loop, sudden change numerical value " record.
The network of RJ45 block supports directly accesses with to push workflow as follows.
Veneer main processor unit by between the network switch and long distance control system TCP under IP framework according to joining
Electricity industry byte protocol such as CDT or IEC60870-5-101 etc. carries out data communication.Distribution industry agreement is by synchronization character, Add, merit
Can code, period, data volume, CRC check code.Sender's (veneer main processor unit) of byte type agreement is with reciever (remotely
Monitoring system) between must consult period by protocol manual and examine period and can explain data volume implication, this consults period
Examine period process the most time-consuming.
And veneer main processor unit TCP IP network 8080 port run http protocol, express this by self-described mode
The electric parameters of unit collection calculation.The client accessing veneer main processor unit directly obtains self-described text results, it is not necessary to
Examine period also need not vlan query protocol VLAN handbook, 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) Time of Day little Hour Minute Second millisecond, measurement compartment name, sudden change more limit value.
Such as 01:00.0555 millisecond on June 15th, 2016, No. 2 laboratory buildings, AB phase current 321A.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components, it is named
Titles etc. can be different, and the above content described in this specification is only to present configuration example explanation.All depend on
The equivalence change done according to structure, feature and the principle described in inventional idea of the present invention or simple change, be all included in this
In the protection domain of bright patent.Described specific embodiment can be done various by those skilled in the art
The amendment of various kinds or supplement or use similar mode to substitute, without departing from the structure of the present invention or surmount present claims
Scope defined in book, all should belong to protection scope of the present invention.
Claims (10)
1. the measurement system of a concentrated collection distribution display, it is characterised in that: include that veneer main processor unit and multi-disc show
Show unit, be provided with in the monolithic integrated circuit plate in described veneer main processor unit MCU module, acquisition channel module, RJ45 lead to
News module and CANBUS communication module, the quantity of described display unit is more than three, each display unit and the main process of veneer
Connected by data communication line between device unit.
The measurement system of concentrated collection the most according to claim 1 distribution display, it is characterised in that: measure object by multiple
Measuring interval composition, described veneer main processor unit is installed in measurement object, and described display unit is installed on measurement interval
On panel；The collection measuring object is only realized by veneer main processor unit, measures the display of object collection result only by showing
Show that unit realizes.
The measurement system of concentrated collection the most according to claim 1 distribution display, it is characterised in that: described MCU module is
The embedded controller that complete function performance is powerful, generates active power, idle to alternating voltage alternating current first-harmonic through calculation
Power, power factor and peak valley ordinary telegram tolerance；Described embedded controller supports http network communications protocol and with sheet format
Generate self-described page, push the abnormality of measurement object with Sudden Changing Rate Starting mode to remote monitoring and administration person.
The measurement system of concentrated collection the most according to claim 1 distribution display, it is characterised in that: described acquisition channel mould
Block is three-phase alternating voltage binding post, and remaining is all alternating current binding post.
The measurement system of concentrated collection the most according to claim 1 distribution display, it is characterised in that: described RJ45 communication mould
Block is network communication interface, and one end of RJ45 communication module is electrically connected with MCU primary processor, the other end of RJ45 communication module
It is associated with long distance control system through the network switch.
The measurement system of concentrated collection the most according to claim 1 distribution display, it is characterised in that: described display unit is only
Lay four binding posts for power supply with CANBUS communication module.
7. a method for measurement based on the measurement system as described in claim 1～6 any claim, it is characterised in that:
Described method for measurement includes that electric parameters based on AC sampling calculates workflow, display unit and veneer main processor unit
Binding flow process between acquisition channel module, and RJ45 communication module support network directly access and push workflow.
Concentrated collection the most according to claim 7 distribution display method for measurement, it is characterised in that: described display unit with
Binding flow process between the acquisition channel module of veneer main processor unit is:
Display unit runs 8 single-chip microcomputers, and veneer main processor unit runs flush bonding processor；
Veneer main processor unit, for current loop, only lays the physical sequential of 1 to n, other relevant parameter when initial
It is all blank；
Display unit sets four buttons, and veneer main processor unit is then not provided with button；
The each relevant parameter of veneer main processor unit current loop is all treated to determine in display unit communication interaction；
One group of double bond is pressed simultaneously, display unit display current loop number, presses the browsable each current loop number of " up and down " key, presses
The current loop chosen is bound to this display unit by " OK " key；
1 current loop at least bound by one display unit；
3 current loops at most bound by one display unit；
When bound when being masked as 1, show correspondence current loop be bound to display unit；
When bound when being masked as 0, show correspondence current loop be not the most bound to display unit；
Veneer main processor unit is just by the most bound current loop and display unit interactive correspondence；Attempt binding for first
The browsable most current loops of display unit；The browsable current loop of display unit bound the most rearward is the fewest；
Another set double bond is pressed simultaneously, and display unit only shows the current loop bound；
Press " up and down " key and show concrete current loop；
Press the display release of " left and right " key, specify separate and no-load voltage ratio these three function bar is set.
The method for measurement of concentrated collection the most according to claim 7 distribution display, it is characterised in that: described adopt based on exchange
The electric parameters calculation workflow of sample is:
The voltage x current loop of physical order, through " tying up between display unit and veneer main processor unit acquisition channel module
Constant current journey " after, the electric current formed measurement of three-phase voltage and three tunnels is spaced application packet；
(1) second circulation process: synchronous acquisition per second measures interval set of applications, keeps according to 128 synchronized samplings of every cycle,
Obtain instantaneous sampling value, calculate the electric parameters measuring interval according to correlation formula；
(2) next second, calculating another set measures interval set of applications, after all calculating, then is restored between first group of measurement
Every set of applications, so circulate；The electric parameters every time obtaining measuring interval after cycle calculations is measured for interactive correspondence, integral point
The electric parameters at interval enters memory space and retains；
(3) between per second and per second, in the time slice after completing second circulation process task, according to every cycle 12 point sampling electricity
12 moment numerical value of current voltage first-harmonic, calculate effective value, when voltage is higher on the low side and electric current is bigger than normal, judge,
And form " time, loop, sudden change numerical value " record.
The method for measurement of concentrated collection the most according to claim 7 distribution display, it is characterised in that: described RJ45 module
The network supported directly accesses and pushes workflow and be: veneer main processor unit TCP IP network 8080 port run
Http protocol, expresses the electric parameters of this unit collection calculation by self-described mode, accesses the client of veneer main processor unit
Directly obtain self-described text results, it is not necessary to examining period also need not vlan query protocol VLAN handbook；Every other day when described parameter includes
Phase integral point, measurement compartment name, electric parameters；And Time of Day little Hour Minute Second millisecond, measurement compartment name, sudden change more limit value.
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