CN108306270A - Photo-voltaic power supply power distribution network short circuit current control method, intelligent terminal and storage medium - Google Patents
Photo-voltaic power supply power distribution network short circuit current control method, intelligent terminal and storage medium Download PDFInfo
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- CN108306270A CN108306270A CN201810164161.2A CN201810164161A CN108306270A CN 108306270 A CN108306270 A CN 108306270A CN 201810164161 A CN201810164161 A CN 201810164161A CN 108306270 A CN108306270 A CN 108306270A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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Abstract
The present invention discloses a kind of photo-voltaic power supply power distribution network short circuit current control method, intelligent terminal and storage medium, wherein the control method includes：When short trouble occurs for power distribution network, the voltage of each photo-voltaic power supply in the position that short trouble occurs and the power distribution network is obtained；When the voltage of each photo-voltaic power supply is respectively less than or is equal to 0.5pu, the electrical distance between each photo-voltaic power supply and the position is calculated；The size for comparing each electrical distance obtains the minimum corresponding photo-voltaic power supply of the electrical distance；Disconnect the breaker for being set to the minimum corresponding photo-voltaic power supply of the electrical distance.The present invention acts on maximum distributed photovoltaic power by excision to short circuit trouble point, effectively to reduce the injection of short circuit current, the utilization of distributed photovoltaic power will not be impacted again simultaneously, achieve the effect that short circuit current that is dynamic, being generated in real time to the short trouble of power grid different time different location inhibits.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of photo-voltaic power supply power distribution network short circuit current controlling party
Method, intelligent terminal and storage medium.
Background technology
Global energy-saving and emission-reduction, the exhaustion of fossil energy day huge challenge under, greatly develop regenerative resource become development
Low-carbon economy, the important means for realizing sustainable development.Parallel network power generation is as a kind of green energy resource with bright prospects
Have become the hot spot of state, inside and outside academia and industrial quarters research.Parallel network power generation has centralized and distributed two kinds of forms.Point
Cloth photovoltaic generation advocate " nearby power generation, nearby it is grid-connected, use nearby " principle, be mainly used for solving the electricity consumption of user nearby
Problem, by it is grid-connected realize power difference compensation with send outside.It can cause short-circuit electricity in distributed photovoltaic power access power distribution network
Stream rises.
Existing short circuit current inhibits strategy to be adopted primarily directed to the topological structure of electric optimization of traditional power grid and in equipment
Take braking measure, both measures be all taken in the case where short circuit current level is i.e. exceeded by exceeded or part one kind it is quiet
The short circuit current braking measure of state.This braking measure cannot it is dynamic, in real time to the short of power grid different time different location
The short circuit current that road failure generates is inhibited.
Invention content
The main object of the present invention is to provide a kind of photo-voltaic power supply power distribution network short circuit current control method, intelligent terminal and deposits
Storage media, it is intended to solve existing short circuit current braking measure cannot it is dynamic, in real time to power grid different time different location
The problem of short circuit current that short trouble generates is inhibited.
To achieve the above object, a kind of power distribution network short circuit current controlling party containing distributed photovoltaic power proposed by the present invention
Method comprising following steps：
When short trouble occurs for power distribution network, each light in the position that short trouble occurs and the power distribution network is obtained
Lie prostrate the voltage of power supply；
When the voltage of each photo-voltaic power supply is respectively less than or is equal to 0.5pu, each photo-voltaic power supply and institute's rheme are calculated
Electrical distance between setting；
The size for comparing each electrical distance obtains the minimum corresponding photo-voltaic power supply of the electrical distance；
Disconnect the breaker for being set to the minimum corresponding photo-voltaic power supply of the electrical distance.
Preferably, the disconnection is set to the breaker step of the minimum corresponding photo-voltaic power supply of the electrical distance
Include later：
Obtain the short circuit current of circuit where short trouble occurs；
If the short circuit current is more than default safety value, it is each less than or equal to preset critical to obtain the electrical distance
The corresponding photo-voltaic power supply of the electrical distance；
It is corresponding less than or equal to each electrical distance of preset critical described that disconnection is set to the electrical distance
The breaker of photo-voltaic power supply.
Preferably, the disconnection is set to the step of the breaker of the minimum corresponding photo-voltaic power supply of the electrical distance
Include after rapid：
After preset time, what be will be switched off is set to the open circuit of the minimum corresponding photo-voltaic power supply of the electrical distance
Device closes.
Preferably, described after preset time, what be will be switched off is set to the minimum corresponding light of the electrical distance
Include after the step of breaker of volt power supply closes：
The no longer Automatic-closing if the breaker is again off.
Preferably, the electrical distance between each photo-voltaic power supply and the position is calculated by 2 π fl/v and is obtained, wherein
L is distance of the position to each photo-voltaic power supply, and f is the system frequency of the power distribution network, and v is the biography of electromagnetic wave on circuit
Broadcast speed.
To achieve the above object, a kind of intelligent terminal provided by the invention, including memory, processor and it is stored in storage
On device and the computer program that can run on a processor, which is characterized in that when the processor executes the computer program
The step of realizing power distribution network short circuit current control method as described in any one of the above embodiments containing distributed photovoltaic power.
To achieve the above object, a kind of computer readable storage medium provided by the invention, is stored thereon with computer journey
Sequence, which is characterized in that the computer program is realized as described in any one of the above embodiments containing distributed photovoltaic electricity when being executed by processor
The step of power distribution network short circuit current control method in source.
In technical scheme of the present invention, by calculate short trouble position and each photo-voltaic power supply between it is electrical away from
From, the position of acquisition breaker corresponding with the photo-voltaic power supply that the position electrical distance of short trouble is nearest, and it is disconnected to control power supply
Road device disconnects, and excision acts on maximum distributed photovoltaic power to short circuit trouble point, effectively to reduce the injection of short circuit current, together
When the utilization of distributed photovoltaic power will not be impacted again, reach it is dynamic, in real time to power grid different time differently
The effect that the short circuit current that the short trouble of point generates is inhibited.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is that the flow of the power distribution network short circuit current control method first embodiment of the invention containing distributed photovoltaic power is shown
It is intended to；
Fig. 2 is that the flow of the power distribution network short circuit current control method second embodiment of the invention containing distributed photovoltaic power is shown
It is intended to；
Fig. 3 is that the flow of the power distribution network short circuit current control method 3rd embodiment of the invention containing distributed photovoltaic power is shown
It is intended to；
Fig. 4 is that the flow of the power distribution network short circuit current control method fourth embodiment of the invention containing distributed photovoltaic power is shown
It is intended to；
Fig. 5 is the modular structure schematic diagram of intelligent terminal of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
It should be appreciated that described herein, specific examples are only used to explain the present invention, is not intended to limit the present invention.
The present invention proposes a kind of power distribution network short circuit current control method, intelligent terminal and the storage medium of photo-voltaic power supply.
Fig. 1 is please referred to, Fig. 1 is the power distribution network short circuit current containing distributed photovoltaic power that first embodiment of the invention proposes
Control method.In this embodiment, the power distribution network short circuit current control method containing distributed photovoltaic power includes following step
Suddenly：
Step S100 obtains the position that short trouble occurs and the power distribution network when short trouble occurs for power distribution network
In each photo-voltaic power supply voltage.
Specifically, distributed photovoltaic power generation advocate " nearby power generation, nearby it is grid-connected, use nearby " principle, be mainly used for
Nearby solve user electrical problem, by it is grid-connected realize power difference compensation with send outside.Distributed photovoltaic power access is matched
Short circuit current can be caused to rise in power grid.When short trouble occurs for the power distribution network, fault detector obtains fault message, and
Fault message is sent to failure location unit.Wherein, several fault detectors are set to each position in power distribution network,
It is connected by wired or unlimited mode with failure location unit, fault detector includes short trouble sensor and readout instrument
Table etc., and each fault detector is numbered differentiation.Failure location unit according to fault message, in conjunction with the failure in database
Indicator data and the data in geographical location determine position of failure point.And the position of fault point is sent to and is attached thereto
Processor.The position of fault point is sent to the display being attached thereto by failure location unit, and display shows distribution network system
And the dot of the place flicker to match with this abort situation in distribution network system marks；It simultaneously will be with fault point
Nearest photo-voltaic power supply is highlighted out, and each photo-voltaic power supply is distinguished by numbering, after photo-voltaic power supply is cut off, this light
Volt power supply appears dimmed, and data information current in power distribution network is also shown on display screen, such as voltage, the electricity of each photo-voltaic power supply
Stream etc..
Step S200 calculates each photo-voltaic power supply when the voltage of each photo-voltaic power supply is respectively less than or is equal to 0.5pu
With the electrical distance between the position.
Specifically, when photo-voltaic power supply voltage is less than or equal to 0.5pu, circuit where short trouble occurs in power distribution network
Short circuit current is larger, and power distribution network is made to be in high-risk status, and short circuit current at this time can be inhibited by reducing the injection of electric current；And
When photo-voltaic power supply voltage is more than 0.5pu, power distribution network is had an impact smaller.Electrical distance is two on research power supply power supply path
The physical quantity of electrical relation between a node, characterizes the tightness degree being electrically connected between node to a certain extent.Electrically
Show that the electrical connection between two nodes is closer apart from smaller, influencing each other between two nodes is also bigger.
Step S300, the size of more each electrical distance obtain the minimum corresponding light of the electrical distance
Lie prostrate power supply.
Specifically, the computational methods of existing electrical distance mainly have Sensitivity Method, impedance method and phase horn cupping.Sensitivity Method is suitable
For linear system, i.e., the sensitivity analysis to electric current, voltage parameter in power grid, it is impossible to be used in the network of power (energy) point
Cloth is analyzed, and is chiefly used in the differentiation to power grid, common sensitivity computing method has：Voltage magnitude changes sensitive with reactive power
DegreeThe sensitivity that voltage phase angle changes with active powerSensitivity is bigger, and electrical distance is smaller between showing two nodes,
Node coupled relation is stronger.Impedance method has clearly physical significance but cannot react electrical distance comprehensively, is calculated in impedance method
When electrical distance, the off-diagonal element Z in electrical distance nodal impedance matrixijIt indicates, physical significance is node j injection
Unitary current, when other nodes are not injected into electric current, the voltage of node i.Phase horn cupping has clearly physical significance simultaneously, and can be accurate
The power transfer distance between node is really held, while considering influence of the watt level to electrical distance, thus can be improved electrical
The accuracy of distance.It is 2 π fl/v by practical electrical distance, calculation formula between phase angle theta two nodes of characterization, wherein l is institute
Rheme sets the distance of each photo-voltaic power supply, and f is the system frequency of the power distribution network, and v is electromagnetic wave propagation speed on circuit
Degree.
By calculating electrical distance, and the influence between each photo-voltaic power supply and short trouble is analyzed, each light can be obtained
The electrical connection tightness degree of power supply and short circuit trouble point is lied prostrate, obtains and contacts most close photovoltaic electric with the position of short trouble
Source, the i.e. photo-voltaic power supply with the position electrical distance minimum of short trouble.
Step S400 disconnects the breaker for being set to the minimum corresponding photo-voltaic power supply of the electrical distance.
Specifically, the electrical connection of the corresponding photo-voltaic power supply of minimum electrical distance and short circuit trouble point is most close, to short
The influence of road fault point is also maximum, thus cuts off the breaker of the corresponding photo-voltaic power supply of minimum electrical distance, minimum electrical distance
Corresponding photo-voltaic power supply disconnects, and reaches the injection for reducing short circuit current, inhibits short circuit current from source.
In technical scheme of the present invention, by calculate short trouble position and each photo-voltaic power supply between it is electrical away from
From, the position of acquisition breaker corresponding with the photo-voltaic power supply that the position electrical distance of short trouble is nearest, and it is disconnected to control power supply
Road device disconnects, and excision acts on maximum distributed photovoltaic power to short circuit trouble point, effectively to reduce the injection of short circuit current, together
When the utilization of distributed photovoltaic power will not be impacted again, reach it is dynamic, in real time to power grid different time differently
The effect that the short circuit current that the short trouble of point generates is inhibited, and additional large scale equipment need not be used, do not need yet
Change distribution net work structure, greatly reduces cost, improve economic benefit.
Fig. 2 is please referred to, Fig. 2 is the second of the control method of the power distribution network short circuit current of the invention containing distributed photovoltaic power
Embodiment, based on the present invention, the first embodiment of the control method of the power distribution network short circuit current containing distributed photovoltaic power, described
It disconnects after being set to the breaker step of the minimum corresponding photo-voltaic power supply of the electrical distance and includes：
Step S500 obtains the short circuit current of circuit where short trouble occurs；
Step S600 obtains the electrical distance less than or equal to default if the short circuit current is more than default safety value
The corresponding photo-voltaic power supply of each electrical distance of critical value；Short circuit current by acquisition and preset safety value phase
Than if short circuit current at this time is still higher than default safety value, obtaining all electrical distances in power distribution network and being less than or equal in advance
If the corresponding photo-voltaic power supply of the electrical distance of critical value.
Specifically, after having cut off the corresponding photo-voltaic power supply of minimum electrical distance, the short circuit current of guilty culprit circuit can obtain
To inhibition, fault detector obtains cut off the corresponding photo-voltaic power supply of minimum electrical distance after obtain short circuit in power distribution network again
Electric current, to confirm the inhibition of this short circuit current.Default safety value is the maximum value that electric current allows in power distribution network, with
Power distribution network will be caused dangerous if electric current is more than default safety value in power grid, must take immediate steps the electricity reduced in power distribution network
Stream.It is current that there are mapping relations between short circuit current and the difference and preset critical of default safety value.Electrical distance is set to be less than
This preset critical can make the short circuit current of circuit where short trouble occurs in power distribution network drop quickly to safe range
It is interior.
Step S700 is disconnected and is set to each electrical distance pair that the electrical distance is less than or equal to preset critical
The breaker for the photo-voltaic power supply answered.
Specifically, after the minimum corresponding photo-voltaic power supply of electrical distance of cut-out, the short circuit current in power distribution network remains unchanged high
When default safety value, power distribution network is in high-risk status, and disconnection is set to the electrical distance and is less than or equal to preset critical
The corresponding photo-voltaic power supply of each electrical distance breaker, the injection of electric current is greatly decreased, inhibits short circuit current, makes
Power distribution network is in a safe condition.
It obtains cut-out and is set to the corresponding each photovoltaic electric of each electrical distance that electrical distance is less than or equal to preset critical
The short circuit current of circuit where short trouble disconnects all photovoltaic electrics if short circuit current is still higher than default safety value behind source
Source concurrently send alarm signal, notice work about electric power personnel to repair.
In the present embodiment, the electric current after the minimum corresponding photo-voltaic power supply of electrical distance of cut-out in power distribution network is still higher than
Default safety value, shows that power distribution network is in high-risk status at this time, then electrical distance is less than or equal to all of preset critical
Photo-voltaic power supply is cut off, and reaches and electric current injection is greatly decreased, inhibit the purpose of short circuit current, reaching makes power distribution network be in safe shape
The effect of state.
Fig. 3 is please referred to, Fig. 3 is the third of the control method of the power distribution network short circuit current of the invention containing distributed photovoltaic power
Embodiment, the first embodiment or second of the control method of the power distribution network short circuit current containing distributed photovoltaic power based on the present invention
Embodiment, the disconnection are wrapped after being set to the breaker step of the minimum corresponding photo-voltaic power supply of the electrical distance
It includes：
Step S800, after preset time, what be will be switched off is set to the minimum corresponding photovoltaic of the electrical distance
The breaker of power supply closes.
In the present embodiment, after the peak point current disappearance of short circuit current, distribution network restoration is normal, after preset time, then
Again the photo-voltaic power supply of cut-out is accessed in power distribution network, so that photo-voltaic power supply is rationally effectively utilized, increases economic efficiency.When default
Between preferably 2.5S, in power distribution network can be in tolerance range, it is contemplated that when the mechanical action time of breaker and arc extinction
Between, after so that the peak point current in short circuit current is disappeared, breaker Automatic-closing.
Fig. 4 is please referred to, Fig. 4 is the 4 of the control method of the power distribution network short circuit current of the invention containing distributed photovoltaic power
Embodiment, the first embodiment of the control method of the power distribution network short circuit current containing distributed photovoltaic power, second based on the present invention
Embodiment or 3rd embodiment, described after preset time, what be will be switched off is set to the minimum corresponding institute of the electrical distance
Include after stating the step of the breaker of photo-voltaic power supply closes：
Step S900, the no longer Automatic-closing if the breaker is again off.
In the present embodiment, breaker will carry out an Automatic-closing after primary disconnect after preset time, if from
It is dynamic to close failure, show that the short circuit current in power distribution network is still excessive, and can not eliminate, it need to be corresponding by minimum electrical distance
Photo-voltaic power supply is cut off to reduce the injection of electric current, achievees the purpose that inhibit short circuit current, while sending failure to work about electric power human hair
Information, work about electric power personnel reach short circuit trouble point and enter repair and maintenance, and maintenance will be switched off after completing by work about electric power personnel
Photo-voltaic power supply access in power distribution network again, so that the photo-voltaic power supply of disconnection is put back into.Keep photo-voltaic power supply rationally effective
It utilizes, increases economic efficiency.
The present invention also provides a kind of intelligent terminals, please refer to Fig. 5, and in one embodiment, which includes memory
100, processor 200 and the computer program that can be run on memory 100 and on processor 200, the processor are stored in
The power distribution network short circuit current containing distributed photovoltaic power in any of the above-described embodiment is realized when the 200 execution computer program
The step of control method.It is appreciated that the intelligent terminal can be TV, IPAD, PC, mobile phone etc..
Specifically, for realizing following steps when the processor 200 executes the computer program：
Step S100 obtains the position that short trouble occurs and the power distribution network when short trouble occurs for power distribution network
In each photo-voltaic power supply voltage；
Step S200 calculates each photo-voltaic power supply when the voltage of each photo-voltaic power supply is respectively less than or is equal to 0.5pu
With the electrical distance between the position；
Step S300, the size of more each electrical distance obtain the minimum corresponding light of the electrical distance
Lie prostrate power supply；
Step S400 disconnects the breaker for being set to the minimum corresponding photo-voltaic power supply of the electrical distance.
Intelligent terminal in the present invention according to the electrical distance between the position and each photo-voltaic power supply for calculating short trouble,
The position of breaker corresponding with the photo-voltaic power supply that the position electrical distance of short trouble is nearest is obtained, and controls power circuit breaker
It disconnects, excision acts on maximum distributed photovoltaic power to short circuit trouble point, effectively to reduce the injection of short circuit current, while again
The utilization of distributed photovoltaic power will not be impacted, reach dynamic, in real time to power grid different time different location
The effect that the short circuit current that short trouble generates is inhibited, and additional large scale equipment need not be used, also have no need to change
Distribution net work structure greatly reduces cost, increases economic efficiency.
Preferably, the disconnection is set to the breaker step of the minimum corresponding photo-voltaic power supply of the electrical distance
Include later：
Step S500 obtains the short circuit current of circuit where short trouble occurs；
Step S600 obtains the electrical distance less than or equal to default if the short circuit current is more than default safety value
The corresponding photo-voltaic power supply of each electrical distance of critical value；
Step S700 is disconnected and is set to each electrical distance pair that the electrical distance is less than or equal to preset critical
The breaker for the photo-voltaic power supply answered.
Preferably, the disconnection is set to the step of the breaker of the minimum corresponding photo-voltaic power supply of the electrical distance
Include after rapid：
Step S800, after preset time, what be will be switched off is set to the minimum corresponding photovoltaic of the electrical distance
The breaker of power supply closes.
Preferably, described after preset time, what be will be switched off is set to the minimum corresponding light of the electrical distance
Include after the step of breaker of volt power supply closes：
Step S900, the no longer Automatic-closing if the breaker is again off.
Preferably, the electrical distance between each photo-voltaic power supply and the position is calculated by 2 π fl/v and is obtained, wherein
L is distance of the position to each photo-voltaic power supply, and f is the system frequency of the power distribution network, and v is the biography of electromagnetic wave on circuit
Broadcast speed.
Intelligent terminal further includes fault location detecting system, if fault location detecting system includes being set in power distribution network
Dry fault detector, the failure location unit being connected by wired or wireless way with fault detector, failure location unit
Also it is connected with processor 200, fault detector includes short trouble sensor and readout instrument etc..When the power distribution network occurs
When short trouble, fault detector obtains fault message, and fault message is sent to failure location unit.Failure location unit
Position of failure point is determined according to fault message, in conjunction with the data of fault detector data and geographical location in database.
And the position of fault point is sent to the processor 200 being attached thereto.
Meanwhile intelligent terminal further includes display, display is connected with failure location unit, and obtains failure and determined unit
The short fault location of positioning, display show distribution network system and match with this abort situation in distribution network system
The dot of place flicker marks；Simultaneously the photo-voltaic power supply nearest with fault point is highlighted out, each photovoltaic electric
Source is distinguished by numbering, and after photo-voltaic power supply is cut off, this photo-voltaic power supply appears dimmed, and power distribution network is also shown on display screen
In current data information, such as the voltage of each photo-voltaic power supply, electric current.
The present invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the computer program
The power distribution network short circuit current controlling party containing distributed photovoltaic power in any of the above-described embodiment is realized when being executed by processor 200
The step of method.
In the description of this specification, reference term " embodiment ", " another embodiment ", " other embodiment " or "
The description of one embodiment~X embodiment " etc. mean specific features described in conjunction with this embodiment or example, structure, material or
Person's feature is included at least one embodiment or example of the invention.In the present specification, to the schematic table of above-mentioned term
It states and may not refer to the same embodiment or example.Moreover, specific features, structure, material, method and step or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements include not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
There is also other identical elements in the process of element, method, article or device.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical scheme of the present invention substantially in other words does the prior art
Going out the part of contribution can be expressed in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (7)
1. a kind of power distribution network short circuit current control method containing distributed photovoltaic power, which is characterized in that include the following steps：
When short trouble occurs for power distribution network, each photovoltaic electric in the position that short trouble occurs and the power distribution network is obtained
The voltage in source；
When the voltage of each photo-voltaic power supply is respectively less than or when equal to 0.5pu, calculate each photo-voltaic power supply and the position it
Between electrical distance；
The size for comparing each electrical distance obtains the minimum corresponding photo-voltaic power supply of the electrical distance；
Disconnect the breaker for being set to the minimum corresponding photo-voltaic power supply of the electrical distance.
2. the power distribution network short circuit current control method containing distributed photovoltaic power as described in claim 1, which is characterized in that institute
It states after disconnection is set to the breaker step of the minimum corresponding photo-voltaic power supply of the electrical distance and includes：
Obtain the short circuit current of circuit where short trouble occurs；
If the short circuit current is more than default safety value, it is each described less than or equal to preset critical to obtain the electrical distance
The corresponding photo-voltaic power supply of electrical distance；
Disconnect the corresponding photovoltaic of each electrical distance for being set to the electrical distance less than or equal to preset critical
The breaker of power supply.
3. the power distribution network short circuit current control method containing distributed photovoltaic power, feature exist as claimed in claim 1 or 2
In including after the step of disconnection is set to the breaker of the minimum corresponding photo-voltaic power supply of the electrical distance：
After preset time, what be will be switched off is set to the breaker pass of the minimum corresponding photo-voltaic power supply of the electrical distance
It closes.
4. the power distribution network short circuit current control method containing distributed photovoltaic power as claimed in claim 3, which is characterized in that institute
It states after preset time, the breaker that be will be switched off be set to the minimum corresponding photo-voltaic power supply of the electrical distance closes
The step of after include：
The no longer Automatic-closing if the breaker is again off.
5. the power distribution network short circuit current control method containing distributed photovoltaic power as described in claim 1, which is characterized in that each
Electrical distance between the photo-voltaic power supply and the position is calculated by 2 π fl/v to be obtained, wherein l is the position to each institute
The distance of photo-voltaic power supply is stated, f is the system frequency of the power distribution network, and v is the spread speed of electromagnetic wave on circuit.
6. a kind of intelligent terminal, including memory, processor and storage are on a memory and the calculating that can run on a processor
Machine program, which is characterized in that the processor is realized when executing the computer program such as any one of claim 1 to 5 institute
The step of power distribution network short circuit current control method containing distributed photovoltaic power stated.
7. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program is located
Manage the power distribution network short circuit current control containing distributed photovoltaic power realized when device executes as described in any one of claim 1 to 5
The step of method processed.
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Address after: 413002 Yiyang City, Hunan province Heshan District Long Ridge Industrial Park, West Road, No. 1 Patentee after: Huaxiang XiangNeng Technology Co.,Ltd. Address before: 413002 Yiyang City, Hunan province Heshan District Long Ridge Industrial Park, West Road, No. 1 Patentee before: HXXN ELECTRICITY Co.,Ltd. |
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Denomination of invention: Short circuit current control method, intelligent terminal and storage medium for photovoltaic power distribution network Effective date of registration: 20231106 Granted publication date: 20190806 Pledgee: China Co. truction Bank Corp Yiyang branch Pledgor: Huaxiang XiangNeng Technology Co.,Ltd. Registration number: Y2023980063452 |