CN108306270B - 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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- CN108306270B CN108306270B CN201810164161.2A CN201810164161A CN108306270B CN 108306270 B CN108306270 B CN 108306270B CN 201810164161 A CN201810164161 A CN 201810164161A CN 108306270 B CN108306270 B CN 108306270B
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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: to obtain the voltage of each photo-voltaic power supply in the position that short trouble occurs and the power distribution network when short trouble occurs for power distribution network；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；Compare the size of each electrical distance, obtains the corresponding photo-voltaic power supply of the smallest electrical distance；Disconnect the breaker for being set to the corresponding photo-voltaic power supply of the smallest electrical distance.The present invention acts on maximum distributed photovoltaic power to short circuit trouble point by excision, the injection of short circuit current is effectively reduced, the utilization of distributed photovoltaic power will not be impacted again simultaneously, achieve the effect that short circuit current that is dynamic, generating 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 technique
Global energy-saving and emission-reduction, the exhaustion of fossil energy day huge challenge under, greatly develop renewable energy 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 industry research.Parallel network power generation has centralized and distributed two kinds of forms.Point
Cloth photovoltaic power generation advocates the principle of " power generation nearby, grid-connected, nearest use nearby ", is mainly used for solving the electricity consumption of user nearby
Problem, by it is grid-connected realize power supply 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 adopt 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.
Summary of the invention
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；
Compare the size of each electrical distance, obtains the corresponding photo-voltaic power supply of the smallest electrical distance；
Disconnect the breaker for being set to the corresponding photo-voltaic power supply of the smallest electrical distance.
Preferably, described to disconnect the breaker step for being set to the corresponding photo-voltaic power supply of the smallest electrical distance
Include: later
Obtain the short circuit current of route where short trouble occurs；
If the short circuit current is greater 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, described to disconnect the step for being set to the breaker of the corresponding photo-voltaic power supply of the smallest electrical distance
Include: after rapid
After preset time, what be will be switched off is set to the open circuit of the corresponding photo-voltaic power supply of the smallest electrical distance
Device closes.
Preferably, described after preset time, what be will be switched off is set to the corresponding light of the smallest 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 route
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 the 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 solution 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 nearest photo-voltaic power supply of the position electrical distance of short trouble, and it is disconnected to control power supply
Road device disconnects, and excision acts on maximum distributed photovoltaic power to short circuit trouble point, the injection of short circuit current is effectively reduced, together
When again will not to distributed photovoltaic power utilization impact, 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.
Detailed description of the invention
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 technical 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 process 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 process 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 process 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 process 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 embodiment
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 power distribution network short circuit current control method, intelligent terminal and the storage medium of a kind 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
It is rapid:
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 advocates the principle of " power generation nearby, grid-connected, nearest use nearby ", is mainly used for
Nearby solve user electrical problem, by it is grid-connected realize power supply 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 with failure location unit by wired or unlimited mode, fault detector includes short trouble sensor and readout instrument
Table etc., and each fault detector is numbered differentiation.Failure location unit is according to the failure in fault message, combined data library
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 flashing to match in distribution network system with this abort situation 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 number, 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, route 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 greater 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 corresponding light of the smallest electrical distance
Lie prostrate power supply.
Specifically, the calculation method of existing electrical distance mainly has Sensitivity Method, impedance method and phase horn cupping.Sensitivity Method is suitable
Sensitivity analysis for linear system, i.e., to electric current, voltage parameter in power grid, it is impossible to be used in the network of power (energy) point
Cloth analysis, be 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 got between showing two nodes
Small, node coupled relation is stronger.Impedance method has clearly physical significance but cannot react electrical distance comprehensively, in impedance method meter
Off-diagonal element Z when calculating electrical distance, in electrical distance nodal impedance matrixijIt indicates, physical significance is node j note
Enter unitary current, when other nodes are not injected into electric current, the voltage of node i.Phase horn cupping has clearly physical significance, and energy simultaneously
The power transfer distance between node is accurately held, while considering influence of the watt level to electrical distance, thus electricity can be improved
The accuracy of gas distance.Practical electrical distance between two nodes is characterized by phase angle theta, its calculation formula is 2 π fl/v, wherein l is
The position is to 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 on route
Speed.
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, i.e., with the smallest photo-voltaic power supply of position electrical distance of short trouble.
Step S400 disconnects the breaker for being set to the corresponding photo-voltaic power supply of the smallest electrical distance.
Specifically, the electrical connection of the corresponding photo-voltaic power supply of the smallest 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 solution 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 nearest photo-voltaic power supply of the position electrical distance of short trouble, and it is disconnected to control power supply
Road device disconnects, and excision acts on maximum distributed photovoltaic power to short circuit trouble point, the injection of short circuit current is effectively reduced, together
When again will not to distributed photovoltaic power utilization impact, 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 do not need also not needing using additional large scale equipment
Change distribution net work structure, greatly reduces cost, improve economic benefit.
Referring to figure 2., 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, the first embodiment of the control method of the power distribution network short circuit current based on the present invention containing distributed photovoltaic power are described
It disconnects after being set to the breaker step of the corresponding photo-voltaic power supply of the smallest electrical distance and includes:
Step S500 obtains the short circuit current of route where short trouble occurs；
Step S600 obtains the electrical distance less than or equal to default if the short circuit current is greater than default safety value
The corresponding photo-voltaic power supply of each electrical distance of critical value；Short circuit current and preset safety value phase by acquisition
Than obtaining all electrical distances in power distribution network and being less than or equal in advance if short circuit current at this time is still higher than default safety value
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 route can be obtained
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 inhibitory effect of this short circuit current.Default safety value is the maximum value that electric current allows in power distribution network, is being matched
If electric current is more than that default safety value will lead to that power distribution network is dangerous in power grid, must take immediate steps the electricity reduced in power distribution network
Stream.There are mapping relations between current short circuit current and the difference and preset critical of default safety value.It is less than electrical distance
This preset critical can make the short circuit current of route 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 cutting off the corresponding photo-voltaic power supply of the smallest electrical distance, 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 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 cutting 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 route where short trouble disconnects all photovoltaic electrics if short circuit current is still higher than default safety value behind source
Source, and alarm signal is sent, notice work about electric power personnel repair.
In the present embodiment, the electric current after cutting off the corresponding photo-voltaic power supply of the smallest electrical distance 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.
Referring to figure 3., 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 based on the present invention containing distributed photovoltaic power
Embodiment, the packet after disconnecting the breaker step for being set to the corresponding photo-voltaic power supply of the smallest electrical distance
It includes:
Step S800, after preset time, what be will be switched off is set to the corresponding photovoltaic of the smallest electrical distance
The breaker of power supply closes.
In the present embodiment, after the peak point current of short circuit current disappears, distribution network restoration is normal, after preset time, then
Again it by the photo-voltaic power supply access power distribution network of cutting, utilizes photo-voltaic power supply rationally effectively, 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.
Referring to figure 4., 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 based on the present invention containing distributed photovoltaic power, second
Embodiment or 3rd embodiment, described after preset time, what be will be switched off is set to the corresponding institute of the smallest 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 will do it 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 the smallest 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, make disconnect photo-voltaic power supply 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, and referring to figure 5., 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 corresponding light of the smallest electrical distance
Lie prostrate power supply；
Step S400 disconnects the breaker for being set to the corresponding photo-voltaic power supply of the smallest 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 nearest photo-voltaic power supply of the position electrical distance of short trouble is obtained, and controls power circuit breaker
It disconnects, excision acts on maximum distributed photovoltaic power to short circuit trouble point, the injection of short circuit current is effectively reduced, 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 do not need also to have no need to change using additional large scale equipment
Distribution net work structure greatly reduces cost, increases economic efficiency.
Preferably, described to disconnect the breaker step for being set to the corresponding photo-voltaic power supply of the smallest electrical distance
Include: later
Step S500 obtains the short circuit current of route where short trouble occurs；
Step S600 obtains the electrical distance less than or equal to default if the short circuit current is greater 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, described to disconnect the step for being set to the breaker of the corresponding photo-voltaic power supply of the smallest electrical distance
Include: after rapid
Step S800, after preset time, what be will be switched off is set to the corresponding photovoltaic of the smallest electrical distance
The breaker of power supply closes.
Preferably, described after preset time, what be will be switched off is set to the corresponding light of the smallest 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 route
Broadcast speed.
Intelligent terminal further includes fault location detection system, if fault location detection system includes being set in power distribution network
Dry fault detector, the failure location unit being connected with fault detector by wired or wireless way, 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 the data of fault detector data and geographical location in fault message, combined data library.
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 flashing marks；Simultaneously the photo-voltaic power supply nearest with fault point is highlighted out, each photovoltaic electric
Source is distinguished by number, 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 voltage, the electric current of each photo-voltaic power supply.
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 embodiments " 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
Stating 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, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include 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 being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a 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 to 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 comprises 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 is equal to 0.5pu, calculate each photo-voltaic power supply and the position it
Between electrical distance, wherein 0.5pu indicates 0.5 times of voltage rating of photo-voltaic power supply；
Compare the size of each electrical distance, obtains the corresponding photo-voltaic power supply of the smallest electrical distance；
Disconnect the breaker for being set to the corresponding photo-voltaic power supply of the smallest 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 disconnecting the breaker step for being set to the corresponding photo-voltaic power supply of the smallest electrical distance and includes:
Obtain the short circuit current of route where short trouble occurs；
If the short circuit current is greater 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 described disconnection the step of being set to the breaker of the corresponding photo-voltaic power supply of the smallest electrical distance
After preset time, the breaker for being set to the corresponding photo-voltaic power supply of the smallest electrical distance that will be switched off is closed
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 for being set to the corresponding photo-voltaic power supply of the smallest electrical distance that will be switched off 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 route.
6. a kind of intelligent terminal including memory, processor and stores the calculating that can be run on a memory and on a processor
Machine program, which is characterized in that the processor is realized when executing the computer program such as any one of claims 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 as described in any one of claims 1 to 5 when device executes
The step of method processed.
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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 |