CN108732447A - A kind of low voltage distribution monitoring equipment and system - Google Patents
A kind of low voltage distribution monitoring equipment and system Download PDFInfo
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- CN108732447A CN108732447A CN201810996411.9A CN201810996411A CN108732447A CN 108732447 A CN108732447 A CN 108732447A CN 201810996411 A CN201810996411 A CN 201810996411A CN 108732447 A CN108732447 A CN 108732447A
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- monitoring device
- voltage distribution
- low voltage
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- detecting means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
In one aspect, a kind of low voltage distribution monitoring equipment of optimization is provided, the low voltage distribution monitoring equipment is set to by distribution between power supply end and power load, including at least one secondary monitoring device for accessing the main monitoring device of power supply end side transmission line of alternation current and being coupled with the main monitoring device, the pair monitoring device further couples each power load.Main monitoring device includes the first detecting means and couples the signal control part of first detecting means.Secondary monitoring device includes the second detecting means, uniaxially carries out one way signal transmission to above-mentioned signal control part.Signal control part is additionally operable to that the distributed network in the corresponding secondary monitoring device of the power load of the AC power line road is calculated according to several magnetic strength dependent variables and magnetic induction vector；Actual current characteristic value is calculated according to the distributed network.On the other hand, a kind of low-voltage distribution service system is provided, including the low voltage distribution monitoring equipment being distributed in multiple distribution regions and the cloud server between multiple low voltage distribution monitoring battery limits.
Description
Technical field
The general general survey of the disclosure is about the monitoring device and its data collecting system for electric power Allocation transformer Web vector graphic.
Background technology
Currently, with the diversification of production and living electrical equipment and power mode, supply of electric power day is becoming tight.Therefore it solves this
Nervous mode is to add monitoring device between defeated supply line and power load (such as factory, resident's electric appliance load)
The realizations such as such as line status, power load requirement can effectively be acquired while distribution with meeting.
The function of Allocation transformer monitoring device is relatively simple in the prior art, and circuit event can be detected to real-time variable by still not having
The acquisition of the data informations such as barrier, power load and operational capability, the function of usually realizing have such as reactive-load compensation, long-range switching,
Electric-power metering monitoring etc..And in radio area, needing to monitor and grasp user power utilization behavior and information on load in real time, and lead to
Rational arithmetic logic is crossed to realize the more reasonable distribution to the power of centrally connected power supply network in some regions.
Invention content
In view of this, providing a kind of low voltage distribution monitoring equipment of optimization, the low pressure in one aspect to solve drawbacks described above
Monitoring power distribution equipment is set to by distribution between power supply end and power load, including access power supply end side ac transmission
The main monitoring device of circuit and at least one secondary monitoring device coupled with the main monitoring device, the further coupling of the pair monitoring device
Connect each power load.
Wherein, the main monitoring device includes：First detecting means, the transient state magnetic induction for sensing the AC power line road
Variable and the total current variable quantity for obtaining the AC power line road；With the signal control part for coupling first detecting means, use
Requirement generates magnetic induction vector when default according to one, and the wherein magnetic induction vector is strained using multiple transient state magnetic strengths
Change gauge to calculate.It is described pair monitoring device include：Second detecting means, the transient state magnetic strength for sensing and calculating several power loads
Dependent variable, and uniaxially one way signal transmission is carried out to above-mentioned signal control part；The wherein described signal control part is additionally operable to：According to
Several magnetic strength dependent variables and magnetic induction vector that second detecting means are obtained are calculated in AC power line road
The corresponding secondary monitoring device of power load distributed network；And each secondary prison is calculated according to the distributed network obtained
The actual current characteristic value of power load at measurement equipment.
As a preferred embodiment of the low voltage distribution monitoring equipment, the second detecting means arranged in the alternating current line of force
Quantity at least equal to these alternating current line of forces branch quantity, wherein second detecting means are can be from each secondary monitoring device
Middle separation.
As the variant of above-mentioned low voltage distribution monitoring equipment, the main monitoring device further includes switch portion, for selectively closing
Power path disconnected and that the alternating current line of force branch residing for the secondary monitoring device of at least part is connected again.
Further, the signal control part is additionally operable under the power path of conducting at least part alternating current line of force branch,
Determine that one of secondary monitoring device as primary path node, has on the alternating current line of force branch wherein residing for the primary path node
There is electric current and does not have curent change.
As another variant, the signal control part be additionally operable to according to alternating current line of force branch described in each ON/OFF come
Recalculate the distributed network.
On the other hand, a kind of low-voltage distribution service system is provided comprising：It is distributed on several in multiple distribution regions
Low voltage distribution monitoring equipment, and the cloud server between multiple low voltage distribution monitoring battery limits are stated, described in reception
The interface data of low voltage distribution monitoring equipment.
As a kind of variant, gateway is set among the cloud server and low voltage distribution monitoring equipment, it should with respective access
The switch of cloud server and low voltage distribution monitoring equipment, wherein only when main monitoring device determines a secondary monitoring device
When as primary path node, local signal connection is directly established between two or more secondary monitoring devices.
The advantage of the equipment or system realized using disclosed technique scheme is apparent：
Due to using distributed design, the multiple secondary monitoring devices mounted under main monitoring device can be formed distributed monitoring net
Network is more effectively to acquire acquisition electrical characteristic parameter, in certain realizations, with electrical characteristic parameter can by electric current, voltage or
Changes of magnetic field amount (rate) characterizes.In some preferred embodiments, such pair monitoring device can pass through the use to such as resident
Pyroelectric monitor equipment directly improved and well networking arrange；
In view of for power circuit, the monitoring of the especially alternating current circuits AC is to use a plurality of types of terminals in the prior art
Son/terminal block usually needs mechanically to disconnect defeated supply access when circuit is transformed, and it is unfavorable that this causes practical electricity consumption.At this
It selects magnetic coupling mode to incude the changes of magnetic field on the alternating current circuits AC in disclosed embodiment, passes through magnetic induction vector side
Formula indicates the use electrical characteristics on the alternating current circuit, to effectively avoid the increased unnecessary cost of track remodelling；
By the way that rational distributed network is arranged, activate the electricity consumption of one or more secondary monitoring devices local acquisition surrounding devices special
Property, in some realizations, this local acquisition can be realized by way of LAN, such as the fieldbus for passing through power line
(PLC) mode carries the signal of transmission.In order to preferably manage these secondary monitoring devices, signal transfer mode can be set as from
Secondary monitoring device is uniaxially transmitted to main monitoring device, is only being determined using at least one secondary monitoring device as a transmission node
When remove this one way signal and transmit；
Comprehensive analysis is carried out by transmitting data to cloud server or similar cloud service platform, effectively to determine for each
The sharing of load of alternating current line of force branch and control.
Description of the drawings
Fig. 1 schematically shows the principle assumption diagram of disclosure system.
Specific implementation mode
As is shown in fig. 1, the low voltage distribution monitoring equipment of optimization is set to power supply end 1 and multiple power loads 2 (in figure
Indicated with simplification) between, such as such low voltage distribution monitoring equipment can be arranged in distribution box cabinet.Including accessing the electric power
The main monitoring device of the transmission line of alternation current of feeder ear and at least one secondary monitoring device coupled with the main monitoring device, the pair
Monitoring device further couples each power load.For example, power load includes household electrical appliance.For the ease of being said in conjunction with attached drawing
It is bright, two secondary monitoring devices are only shown, it should be appreciated that the arrangement of more pair monitoring devices is similar with application in figure
's.Similar component is simply distinguished in a manner of alphanumeric codes in Fig. 1.
In one aspect, main monitoring device may include：First detecting means 31, for sensing the wink on the transmission line of alternation current 1
The state magnetic strength dependent variable M and total current variable quantity I for obtaining the AC power line roadtotal.For example, first detecting means 31 can
The curent change of transmission line of alternation current is acquired using manganese copper diverter part, or suitable electromagnetic induction element conversion can also be used
For current value；Couple the signal control part 33 of first detecting means 31, for according to a preset time requirement (when abbreviation need,
TOU the period)Generate magnetic induction vector M (tou), wherein when requirement tou meet：
Wherein s is to indicate the positive integer of AC sine wave number of cycles and be not zero, and θ is its SIN function variable.The magnetic induction
Vector M (tou) is obtained or is linearly calculated in combination with multiple transient state magnetic induction variable quantity M.In an example, magnetic
Induction vector M (tou), which can meet, is divided into j × k ranks element：
M(tou)∈Mj×k, j, k={ 1,2,3 ... }
In the embodiment show in figure 1, the secondary monitoring device may include：Second detecting means 32A, 32B, for sensing and calculating
The transient state magnetic strength dependent variable m of the power load 2 of coupling is corresponded to by each power path, and uniaxially to above-mentioned signal control part
33 carry out signal transmission.
In one embodiment, the signal control part 33 is additionally operable to：
It is calculated according to the second detecting means 32A several magnetic strength dependent variable m obtained and magnetic induction vector M (tou)
Source is in the distributed network K of corresponding secondary the monitoring device 32A, 32B of the power load 2 on the transmission line of alternation current 4.Namely
It says, obtaining transient state magnetic strength dependent variable M by electromagnetic induction method on transmission line of alternation current 4 may include removing the direct current wherein generated
Component ignores the interference in the other magnetic fields in outside for a certain alternating current line of force branch 41.Therefore it can meet relational expression：
M (tou)=Km (relational expression 1)
The wherein described distributed network K meets j element：
K∈Kj, j={ 1,2,3 ... }
That is, should meet
K=(mTm)-1mTM (tou) (relational expression 2)
The actual current characteristic value i of power load 2 at each secondary monitoring device is calculated according to the distributed network K obtained
(tou).In some realizations, total current variable quantity ItotalIt can meet with actual current characteristic value i (tou)：
Itotal=Ki (tou) (relational expression 3)
As an example, it is in the alternating current line of force that the secondary monitoring device is arranged in the low voltage distribution monitoring equipment
The bus mode of carrier wave (PLC) carries out the one way signal transmission, the setting wherein each pair monitoring device is isolated from each other.
In the embodiment above, it is understood in advance that be：The each second detecting means sensing arranged in multiple alternating current line of forces
Transient state magnetic strength dependent variable m summations be not equal to transient state magnetic strength dependent variable M, the transient state magnetic induction variable m usually sensed is this
Alternating magnetic field outside a little alternating current line of forces changes the summation in inducted magnetic field with the alternating current for flowing through the alternating current line of force,
When these second detecting means are designed by distribution, the magnetic induction vector M (tou) of generation is to contain each second sensor sheet
Characterisitic parameter of body, such as device parameters, duty ratio etc..Especially, such characterisitic parameter may also include each secondary monitoring device
Device code, in this way, passing through such characterisitic parameter preferably determines distributed network K.In addition, being arranged in a distribution box cabinet
AC distribution line on the electric current that flows through be sometimes single alternating current line of force branch or the electric current of the corresponding power load of supply,
It is likely to be the electric current summation of multiple or whole alternating current line of force branches, but if not by the way of above-described embodiment, is incited somebody to action
It can not carry out the reasonable distribution of current demand.
In some realizations, the influence that the characterisitic parameter of first, second sensor itself is brought should also be considered.For example, second
The magnetic strength dependent variable m that sensor 32A is sensed may and theoretical value there are deviation, this needs is mended by practical measuring and calculating mode
It repays.For this point, distributed network K also may include the weighted value of magnetic strength dependent variable m sensed to each second sensor.
As a preferred embodiment of above-mentioned low voltage distribution monitoring equipment, arranged in the alternating current line of force 4 second sensing
The quantity in portion at least equal to these alternating current line of forces 41 quantity of branch, wherein second detecting means are can be from each secondary monitoring
It is detached in equipment.In one embodiment, secondary monitoring device can be used as the ammeter of electricity consumption acquisition terminal equipment, so as to
One or more second sensors are added on ammeter to obtain above-mentioned magnetic strength dependent variable m respectively.Meanwhile not influencing ammeter itself
Electrical energy measurement.In another embodiment, second sensor 32A, 32B are also each equipped with electric power connection part 38A, 38B, for fitting
Electric power/electromechanical interface assigned in different monitoring devices.
As an improvement, further including logical unit 34A, 34B in the pair monitoring device.Logical unit 34A can pass through
Operation is digitized to obtain magnetic strength dependent variable after carrying out A/D conversions to the analog signals that second sensor 32A is sensed
m.In an example, which can pass through current rectifying and wave filtering circuit filtering clutter.In another example, the logic
Arithmetic element 34A can be integrated in the metering circuit of an ammeter or use completely circuit part therein.
In any of the above embodiment, logical unit 34A, 34B can include respectively also signal transmission portion 36A, 36B, be used for
By local net mode to neighbouring secondary monitoring device transmission equipment command signal.
As the variant of above-mentioned low voltage distribution monitoring equipment, the main monitoring device further includes switch portion 39, for selectively
Shutdown and the power path that the alternating current line of force branch residing for the secondary monitoring device of at least part is connected again.For example, switch portion 39
The magnetic latching relay element of long-range switching on formula can be selected.
Further, the signal control part 33 is additionally operable to the power path in conducting at least part alternating current line of force branch
Under, determining one of secondary monitoring device is as primary path node, the alternating current line of force branch wherein residing for the primary path node
It is upper that there is electric current and do not have curent change (such as constant current value).In some realizations, certain alternating current line of force branch connections
Power load be off or Low-power-consumptiodormancy dormancy state, this can for example, by logical unit 34A periodically (such as
A period in daily) detect the current value of the branch line road and record analysis obtains.
For accordingly, which can be configured as choosing above-mentioned distributed network K sequences according to this record analysis action
Corresponding a certain element in row is determined as primary path node to collect the electro magnetic monitoring signals of neighbouring other secondary monitoring devices.Such as
This, the efficiency that signal transmits is higher and more stable.
Further, a secondary monitoring device is being determined as under primary path node, other at least one secondary monitoring devices are according to institute
One way signal is stated to transmit to the primary path node upload electro magnetic monitoring signals.For example, logical unit 34A can lead to
The mode for crossing open electrical bus obtains the device directive signal that the secondary monitoring device of neighbouring one or more uploads, and passes through identification
The device directive (such as device address code) by electrical bus 42 to these neighbouring secondary monitoring devices send connection requests with
Establish locality connection.In an example, signal transmission portion 36B can be also wirelessly connected by signal transmission portion 36A to establish
Such locality connection.
In the aforementioned embodiment, the signal control part 33 is additionally operable to according to alternating current line of force branch described in each ON/OFF
To recalculate the distributed network K.
On the other hand, a kind of low-voltage distribution service system is provided comprising：Several above-mentioned low voltage distribution monitoring equipment, with
And the cloud server 6 between the region residing for multiple low voltage distribution monitoring equipment, it receives the low voltage distribution monitoring and sets
The monitoring power distribution data that standby interface transmits.
As a kind of variant, several gateways 5 are set among the cloud server 6 and low voltage distribution monitoring equipment, with each
From the switch for accessing the cloud server 6 and low voltage distribution monitoring equipment, wherein only when main monitoring device determines one
When secondary monitoring device is as primary path node, local signal connection is directly established between two or more secondary monitoring devices.Such as
This, realizes that local signal transmits by bus 42, then passes through (or the timing when needed of the coffret 35 of main monitoring device
Ground) it is sent to gateway 5, wherein the conversion for carrying out communications protocol by gateway 5 passes to cloud server 6 again or user holds
Terminal device.
A kind of method of monitoring power distribution can be provided based on above example, this method may include step：
S100, according to the period of a preset time requirement (being needed when abbreviation, TOU)
Generate magnetic induction vector M (tou), wherein when requirement tou meet：
Wherein s is to indicate the positive integer of AC sine wave number of cycles and be not zero, and θ is its SIN function variable.The magnetic induction
Vector M (tou) is obtained or is linearly calculated in combination with multiple transient state magnetic induction variable quantity M.In an example, magnetic
Induction vector M (tou), which can meet, is divided into j × k ranks element：
M(tou)∈Mj×k, j, k={ 1,2,3 ... }
S200, sensing and the transient state magnetic strength dependent variable m for calculating the power load 2 that coupling is corresponded to by each power path, and it is single
Signal transmission is carried out to ground to above-mentioned signal control part 33.
S300, it is calculated according to the second detecting means 32A several magnetic strength dependent variable m obtained and magnetic induction vector M (tou)
Source is in the distributed network K of corresponding secondary the monitoring device 32A, 32B of the power load 2 on the transmission line of alternation current 4.Namely
It says, obtaining transient state magnetic strength dependent variable M by electromagnetic induction method on transmission line of alternation current 4 may include removing the direct current wherein generated
Component ignores the interference in the other magnetic fields in outside for a certain alternating current line of force branch 41.Therefore it can meet relational expression：
M (tou)=Km (relational expression 1)
The wherein described distributed network K meets j element：
K∈Kj, j={ 1,2,3 ... }
That is, should meet
K=(mTm)-1mTM (tou) (relational expression 2)
The actual current characteristic of power load 2 at each secondary monitoring device is calculated according to the distributed network K obtained by S400
Value i (tou).In some realizations, total current variable quantity ItotalIt can meet with actual current characteristic value i (tou)：
Itotal=Ki (tou) (relational expression 3)
As a kind of variant, above-mentioned steps S300 further includes：S310, in the electric power of conducting at least part alternating current line of force branch
Under access, determining one of secondary monitoring device is as primary path node, the alternating current line of force wherein residing for the primary path node
Branch road has electric current and does not have curent change (such as constant current value).
In some realizations, the power load of certain alternating current line of force branch connections is off or Low-power-consumptiodormancy dormancy state, this
It can periodically (such as daily in a period) detects the branch line road for example, by logical unit 34B
Current value and record and analyze obtain.
Further, it in above-mentioned steps S310, is chosen according to this record analysis action corresponding in above-mentioned distributed network K sequences
A certain element is determined as primary path node to collect the electro magnetic monitoring signals of neighbouring other secondary monitoring devices.In this way, signal passes
The efficiency passed is higher and more stable.
Further, a secondary monitoring device is being determined as under primary path node, other at least one secondary monitoring devices are according to institute
One way signal is stated to transmit to the primary path node upload electro magnetic monitoring signals.For example, logical unit 34A can lead to
The mode for crossing open electrical bus obtains the device directive signal that the secondary monitoring device of neighbouring one or more uploads, and passes through identification
The device directive (such as device address code) by electrical bus 42 to these neighbouring secondary monitoring devices send connection requests with
Establish locality connection.In an example, signal transmission portion 36B can be also wirelessly connected by signal transmission portion 36A to establish
Such locality connection.
Further include in above-mentioned steps S300：According to the quantity difference of alternating current line of force branch described in each ON/OFF come weight
It is new to calculate the distributed network K.For example, according to foregoing relationships it is found that the magnetic strength when known each power line branch strains
After measuring m, relational expression 2 can be simplified, for example, requirement when signal control part 33 or logical unit 34B can be set in two
Between period in, corresponding primary path node can pass through：
It determines.
In one embodiment, logical unit 34A can also be used for acquiring a certain alternating current according to above-mentioned relation formula 2 and 4
The current characteristics value of line of force branch road.Arithmetic logic between signal control part 33 and logical unit 34A, 34B can not phase
Together.
Claims (9)
1. a kind of low voltage distribution monitoring equipment is set between power supply end and power load, it is characterised in that including accessing institute
At least one secondary monitoring device stated the main monitoring device of the transmission line of alternation current at power supply end and coupled with the main monitoring device,
The pair monitoring device further couples each power load, wherein
The main monitoring device includes：
First detecting means, transient state magnetic strength dependent variable for sensing the AC power line road and obtain the AC power line
The total current variable quantity of road；With
Couple the signal control part of first detecting means, for according to one it is default when requirement generate magnetic induction vector, the wherein magnetic
Incuding vector is calculated using multiple transient state magnetic induction variable quantities；
It is described pair monitoring device include：
Second detecting means, the transient state magnetic strength dependent variable for sensing and calculating several power loads, and uniaxially to above-mentioned signal
Control unit carries out signal transmission；Wherein
The signal control part is additionally operable to：
Several magnetic strength dependent variables obtained according to second detecting means and magnetic induction vector be calculated in this exchange it is defeated
The distributed network of the corresponding secondary monitoring device of power load in electric line；And
The actual current characteristic value of power load at each secondary monitoring device is calculated according to the distributed network obtained.
2. low voltage distribution monitoring equipment according to claim 1, it is characterised in that：It is to hand over that the secondary monitoring device, which is arranged,
Bus mode in the galvanic electricity line of force carries out the one way signal transmission, wherein
Each pair monitoring device is isolated from each other setting.
3. low voltage distribution monitoring equipment according to claim 2, it is characterised in that：It is arranged in the alternating current line of force
The quantity of second detecting means at least equal to these alternating current line of forces branch quantity, wherein second detecting means are can be from each
It is detached in secondary monitoring device.
4. according to any one of them low voltage distribution monitoring equipment of preceding claims, it is characterised in that：The main monitoring is set
Standby further includes switch portion, for selectively turning off and being connected again the alternating current line of force branch residing for the secondary monitoring device of at least part
The power path on road.
5. low voltage distribution monitoring equipment according to claim 4, it is characterised in that：The signal control part is additionally operable to leading
Under the power path of logical at least part alternating current line of force branch, one of secondary monitoring device is determined as primary path node,
There is electric current on alternating current line of force branch wherein residing for the primary path node and do not have curent change.
6. low voltage distribution monitoring equipment according to claim 5, it is characterised in that：Determining a secondary monitoring device as master
Under path node, other at least one secondary monitoring devices are transmitted according to the one way signal to the primary path node up-delivering signal.
7. low voltage distribution monitoring equipment according to claim 4 or 5, it is characterised in that：The signal control part is additionally operable to
The distributed network is recalculated according to alternating current line of force branch described in each ON/OFF.
8. a kind of low-voltage distribution service system, it is characterised in that including：
Several low voltage distribution monitoring equipment described in claim 1, and
Cloud server between multiple low voltage distribution monitoring battery limits, receives connecing for the low voltage distribution monitoring equipment
Mouth data.
9. low-voltage distribution service system according to claim 8, it is characterised in that：Match in the cloud server and low pressure
Gateway is set among pyroelectric monitor equipment, and the data exchange respectively to access the cloud server and low voltage distribution monitoring equipment is set
It is standby, wherein only when main monitoring device determines a secondary monitoring device as primary path node, in two or more secondary monitoring devices
Between directly establish local signal connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810996411.9A CN108732447A (en) | 2018-08-29 | 2018-08-29 | A kind of low voltage distribution monitoring equipment and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810996411.9A CN108732447A (en) | 2018-08-29 | 2018-08-29 | A kind of low voltage distribution monitoring equipment and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108732447A true CN108732447A (en) | 2018-11-02 |
Family
ID=63943251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810996411.9A Withdrawn CN108732447A (en) | 2018-08-29 | 2018-08-29 | A kind of low voltage distribution monitoring equipment and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108732447A (en) |
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2018
- 2018-08-29 CN CN201810996411.9A patent/CN108732447A/en not_active Withdrawn
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