CN105470934B - A kind of power distribution network automatic reclosing control method suitable for distributed generation resource access - Google Patents
A kind of power distribution network automatic reclosing control method suitable for distributed generation resource access Download PDFInfo
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- CN105470934B CN105470934B CN201510970829.9A CN201510970829A CN105470934B CN 105470934 B CN105470934 B CN 105470934B CN 201510970829 A CN201510970829 A CN 201510970829A CN 105470934 B CN105470934 B CN 105470934B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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Abstract
The invention discloses a kind of power distribution network automatic reclosing control methods suitable for distributed generation resource access.The fault detection information that this method is uploaded by collecting the intelligent protection terminal (Intelligent Electronic Device, IED) of each dispersion, forms fault message matrix, and combine power distribution network network topology structure matrix, determines faulty line section.According to the reclosing mode of fault section position, distributed power access point position and use, the Tripping matrix of distributed generation resource is formed, keeps correlation distribution formula power supply out of service.On this basis, it is further formed reclosing matrix, and realizes the shutting-brake control of relative breaker accordingly.The invention can be effectively prevented from the dash current generated by non-Switching Synchronization after distributed generation resource access power distribution network, raising distributed electrical source utilization rate and power grid power supply reliability.
Description
Technical field
Power system automation technology field belonging to the present invention, more particularly to a kind of matching suitable for distributed generation resource access
Power grid automatic reclosing control method.
Background technology
Short trouble in actual electric network is mostly line fault, and based on " transient fault ".For instantaneity event
Barrier, after faulty line is disconnected rapidly by relay protection, arc extinction, fault point dielectric strength is restored, at this time on automatic reclosing
Breaker just can restore normal power supply.Therefore, when transient fault occurs for circuit, automatic reclosing can greatly improve confession
The reliability and continuity of electricity, to have been widely used in the power system.
As distributed generation resource (Distributed Generation, DG) largely accesses power distribution network, original single supply
Radioactivity network is changed into multiple feed network, if still using original reclosing mode suitable for single ended power supply, will give
Power distribution network automatic reclosing brings problems with：On the one hand, due to the radiativity network of traditional single ended power supply be all made of it is aperiodic
Reclosing mode, after distributed generation resource access, if breaking down on circuit between system power supply and distributed power access point,
At this point, non-synchronous reclosing will generate prodigious dash current, this will cause sternly the safe operation of power grid and distributed generation resource
The influence of weight；On the other hand, even if using synchronous recloser mode, distributed generation resource belongs to weak mains system, is transported in isolated island
Between the departure date, voltage and frequency may change, it is difficult to meet inspection same period condition, lead to unsuccessful reclosing, will seriously affect
The power supply reliability of power grid.
Currently, having carried out various aspects for the power distribution network automatic reclosing control method for being suitable for distributed generation resource access
Research work, as 1547 standards of IEEE Standard require (IEEE Std 1547.4-2011, Guide for
Design,Operation,and Integration of Distributed Resource Island Systems with
Electric Power Systems[S])：If failure is happened at feeder line where DG, acted in the automatic reclosing of feeder line
Before, all DG on the feeder line must be jumped out of, with grid disconnection.The main problem that this processing mode is brought is, in power distribution network
It will cause a large amount of distributed generation resource unnecessary out of service during failure, and reduce the utilization ratio of distributed generation resource, and
Thus load electricity shortage may be caused, scope of power outage is caused further to expand；It is non-caused by avoid distributed generation resource from accessing
Asynchronous switch-on problem, it is proposed that install power directional element additional in system power supply enter line side, to distinguish fault feeder, selectively
(see Zhao Yueling, Li Huazhong, Sun Ming distributed generation resources are accessed to substation's distance the method for excision the connected DG units of fault feeder
Influence [J] electric power system protection and controls of protection and reclosing, 2010,38 (20):217-224) etc., the research is main
It is to inquire into how to realize before automatic reclosing action, the method for effectively cutting off all DG on the feeder line, there are still distributions
Power utilization efficiency is low, may cause electricity shortage, leads to the drawbacks such as scope of power outage expansion.
Invention content
In view of the drawbacks of the prior art, the present invention propose it is a kind of suitable for distributed generation resource access power distribution network weigh automatically
Shutting-brake control method, by the intelligent protection terminal (Intelligent Electronic Device, IED) for collecting each dispersion
The fault detection information of upload determines fault wire section, and according to fault section position, distributed power access point position and adopts
Reclosing mode forms the automatic reclosing control method of the power distribution network suitable for distributed generation resource；Its object is to energy
It is enough effectively prevented from the dash current generated by non-Switching Synchronization after distributed generation resource access power distribution network, improves distributed generation resource
The power supply reliability of utilization rate of electrical and power grid.
The present invention provides a kind of power distribution network automatic reclosing control methods suitable for distributed generation resource access, including under
State step：
S1：Digital number is carried out to breaker all in power distribution network；
S2：It is formed in each feeder line exit breaker number the first matrix E and each feeder line and is divided according to the breaker after number
Cloth tie feeder exit the second matrix D of breaker number g；
S3：The network topology structure third matrix T of power distribution network is formed according to the breaker after number；
S4：According to reclosing mode used by power distribution network, setting reclosing mode control word W；
S5：The fault initiating information that IED equipment uploads at each breaker is obtained by communication mode, forms fault message square
Battle array F；
S6：According to the reclosing mode control word W, reclosing mode is judged, if reclosing mode control word is preceding adds
Fast mode is then transferred to step S9；If reclosing mode control word is rear accelerated mode, it is transferred to step S7；
S7：Distributed generation resource Tripping matrix Q under accelerated mode after formationa, and cut off the institute that faulted line segment downstream is accessed
It is distributed formula power supply；
S8：Reclosing matrix R after formation under accelerated modea, and weight is carried out to relative breaker according to reclosing matrix
Shutting-brake control；
S9：Form distributed generation resource Tripping matrix Q under preacceleration modeb, and cut off faulted line segment place feeder line and accessed
All distributed generation resources；
S10：Form the reclosing matrix R under preacceleration modeb, and weight is carried out to relative breaker according to reclosing matrix
Shutting-brake control.
Further, step S7 is specially：
S71：Post reclosing acceleration side is built according to feeder line outlet breaker number the first matrix E and fault message matrix F
The correction matrix H of fault message matrix under formula；
Wherein, H is n × n rank square formations, and n is the number of breaker in power distribution network；Hi1For m × m rank square formations, m is the i-th 1 feedbacks
The breaker number of line, as the fault-signal F of the i-th 1 feeder line exit IEDE i1When=1, Hi1For unit matrix, otherwise Hi1For
Null matrix；
S72：Revised failure letter under post reclosing acceleration mode is formed according to correction matrix H and fault message matrix F
Cease matrix Fa'=F × H；
S73：According to power distribution network network topology structure third matrix T and revised fault message matrix Fa' form coincidence
Fault element recognition matrix P under accelerated mode after locka=Fa′×TT；.
S74：According to fault element recognition matrix P under post reclosing acceleration modeaWith distributed generation resource interconnection exit
The second matrix D of breaker number g forms the Tripping matrix of distributed generation resource under rear accelerated mode
Wherein, QaFor the array of 1 × n, Qa,i6=1 indicates, as (Pa,i6=1) ∩ (i6 ∈ Dgj2) when, i.e. fault identification
Matrix PaIn the i-th 6 elements be 1, and i6 is the jth 2 in the breaker number matrix D g of distributed generation resource interconnection exit
When element, control centre sends trip signal to the breaker i6 in corresponding distributed generation resource interconnection exit；Remaining situation
Lower QaIn element be defaulted as 0, indicate that control centre does not send trip signal to corresponding breaker.
Further, the reclosing matrix in step S8 under rear accelerated mode
Wherein, RaFor the array of 1 × n, Ra,i7=1 indicates, whenWhen, i.e. trip breaker
When i7 is not distributed generation resource interconnection exit breaker, control centre postpones tsetIt sends and overlaps to corresponding breaker i7
Lock allows order, and after IED receives reclosing order, and Reclosing Instant arrives, then breaker is automatically performed closing operation；Remaining
In the case of RaMiddle element is defaulted as 0, indicates that control centre does not send reclosing to corresponding breaker and allows order.
Further, step S9 is specially：
S91：According to feeder line outlet breaker number the first matrix E and fault message matrix F structure reclosing preacceleration side
The correction matrix H' of fault message matrix under formula；
Wherein, H' is n × n rank square formations, H 'i1For m × m rank square formations, m is the breaker number of the i-th 1 feeder lines, when the i-th 1
The fault-signal F of feeder line exit IEDE i1When=1, H 'i1Diagonal line on it is opposite with the i-th 1 feeder line exit breakers
The element answered is 1, i.e. H 'i1(1,1)=1；In addition, the breaker number matrix D L=[E of the i-th 1 feeder lines of structurei1,Ei1+1,…
Ei1+1- 1], and according to distributed generation resource interconnection exit breaker number matrix D g judged, if Dgj4=DLi8, that is, divide
When the number of cloth tie feeder exit 4 breakers of jth is in the breaker number matrix of the i-th 1 feeder lines, then record
Number Dgj4, enable Hi1(Dgj4-Ei1+1,Dgj4-Ei1+ 1)=1；Remaining element is 0；Break in distributed generation resource interconnection exit
Device corresponding element in road is 1, remaining element is 0；When the fault-signal of i-th feeder line exit IED is 0, H 'i1It is zero
Matrix；
S92：Revised failure letter under reclosing preacceleration mode is formed according to correction matrix H ' and fault message matrix F
Cease matrix Fb'=F × H '；
S93：According to power distribution network network topology structure third matrix T and revised fault message matrix Fb' form coincidence
Fault element recognition matrix P under lock preacceleration modeb=Fb′×TT；
S94：According to fault element recognition matrix P under post reclosing acceleration modebWith distributed generation resource interconnection exit
The second matrix D of breaker number g forms the Tripping matrix of distributed generation resource under preacceleration mode
Wherein, QbFor the array of 1 × n, Qb,i6=1 indicates, as (Pb,i6=1) ∩ (i6 ∈ Dgj2) when, i.e. fault identification
Matrix PbIn the i-th 6 elements be 1, and i6 is the jth 2 in the breaker number matrix D g of distributed generation resource interconnection exit
When element, control centre sends trip signal to the breaker i6 in corresponding distributed generation resource interconnection exit；Remaining situation
Lower QbIn element be defaulted as 0, indicate that control centre does not send trip signal to corresponding breaker.
Further, the reclosing matrix in step S10 under preacceleration mode
Wherein, RbFor the array of 1 × n, Rb,i7=1 indicates, whenWhen, i.e. trip breaker
When i7 is not distributed generation resource interconnection exit breaker, control centre postpones tsetIt sends and overlaps to corresponding breaker i7
Lock allows order, and after IED receives reclosing order, and Reclosing Instant arrives, then breaker is automatically performed closing operation；Remaining
In the case of RbMiddle element is defaulted as 0, indicates that control centre does not send reclosing to corresponding breaker and allows order.
Further, tsetIt is adjusted by breaker time, representative value 200ms.
The fault detection information that the present invention is uploaded by IED, the power distribution network automatic reclosing after structure distributed generation resource access
The control algolithm of lock, the algorithm is simple, and the fault message of transmission is amount of logic, greatly alleviates communication system burden.It is used
Power distribution network preacceleration suitable for distributed generation resource and rear accelerated mode under automatic reclosing control method, there is versatility
By force, the features such as being easily achieved can be effectively prevented from after distributed generation resource access power distribution network because non-Switching Synchronization generates impact electricity
Stream improves distributed electrical source utilization rate and power grid power supply reliability.
Description of the drawings
Fig. 1 is the power distribution network automatic reclosing control method provided in an embodiment of the present invention suitable for distributed generation resource access
Implementation flow chart.
Fig. 2 is the typical distribution web frame figure containing distributed generation resource in the present invention.
Fig. 3 is the power distribution network network structure that preacceleration mode is used in the present invention.
Fig. 4 is the power distribution network network structure that preacceleration mode is used in the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention provides a kind of power distribution network automatic reclosing control methods suitable for distributed generation resource access.Such as Fig. 1
It is shown, specifically include following steps：
Step 1：Digital number is carried out to breaker.
Each breaker in region is handled as a node, using the integer from 1 to n to all in network
Breaker carries out digital number, and n is the number of network interruption road device.Numbering principle is：For containing k feeder line, h distribution
The power distribution network of power supply is one by one numbered the breaker of each feeder line, and each feed line breaker is numbered from feeder line primary power outlet
The breaker (abbreviation outlet breaker) at place starts, and from the near to the distant, continuously carries out serial number to breaker successively.
Step 2：According to the digital number of each breaker, each feeder line exit breaker number matrix E and each feeder line are formed
Middle distributed generation resource interconnection exit breaker number matrix D g.
(1) each feeder line outlet breaker number value is uniformly stored in feeder line outlet breaker number matrix E.Matrix E be 1 ×
The matrix of k, matrix E each elements are defined as：
Ei1The number (01) of=the i-th 1 feeder line exit breaker
(2) distributed generation resource interconnection exit breaker number value in each feeder line is uniformly stored in each feeder line distributed
Tie feeder exit breaker number matrix D g.Matrix D g is the matrix of 1 × h, and matrix D g each elements are defined as：
Dgi2The number (02) of=the i-th 2 DG interconnections exit breaker
Step 3：Build the power distribution network network topology structure matrix T in region.Digital volume is carried out to breaker in step 1
On the basis of number, the network topology structure matrix T of power distribution network is formed, for having the distribution web area of n breaker, T matrixes
For the square formation of n × n, T matrix elements generate principle and are：
Step 4：According to reclosing mode used by power distribution network, reclosing mode control word W is set, and provides：
Step 5：The fault initiating information that IED equipment uploads at each breaker is obtained by communication mode, forms failure letter
Matrix F is ceased, F is the row sequence of 1 × n, element Fi4Generation principle be：
Step 6：According to reclosing mode control word, reclosing mode is judged, if reclosing mode control word is preacceleration
Mode then redirects and executes step 9；If reclosing mode control word is rear accelerated mode, it is transferred to step 7；
Step 7：Form distributed generation resource Tripping matrix Q under post reclosing acceleration modea.When using post reclosing acceleration side
When formula, reclosing device is each equipped at all breakers on feeder line.Distributed generation resource under post reclosing acceleration mode is formed to jump
Lock matrix QaInclude the following steps：
1. according under feeder line outlet breaker number matrix E and fault message matrix F structure post reclosing acceleration mode
The correction matrix H of fault message matrix.H-matrix is mainly used for being modified processing to F matrix, for containing n breaker, k
The fault zone of feeder line, H-matrix create-rule are：
Wherein, H is n × n rank square formations, Hi1For m × m rank square formations, m is the breaker number of the i-th 1 feeder lines, when the i-th 1
The fault-signal F of feeder line exit IEDE i1When=1, Hi1For unit matrix, otherwise Hi1For null matrix.
2. forming revised fault message under post reclosing acceleration mode according to correction matrix H and fault message matrix F
Matrix Fa′.Adjacent lines is made with the fault message of retention fault feeder line according to fault message matrix F and its correction matrix H
The fault detection signal that breaker IED is uploaded is in revised FaCorresponding element is 0 in ' matrix, obtains revised failure letter
Cease matrix Fa′：Fa'=F × H (07)
3. according to power distribution network network topology structure matrix T and revised fault message matrix FaAdd after ' formation reclosing
Fault element recognition matrix P under fast modea.Determining fault zone network topology structure matrix T and fault message matrix Fa'
Under the conditions of, by Fa' the transposition for being multiplied by T can arrive fault element recognition matrix Pa：Pa=Fa′×TT (08)
Wherein, Pa,i5When=0, indicate that circuit where the i-th 5 breakers does not have failure；Pa,i5When=1, indicate the i-th 5 it is disconnected
Line failure where the device of road.
4. according to fault element recognition matrix P under post reclosing acceleration modeaIt is disconnected with distributed generation resource interconnection exit
Road device number matrix D g forms the Tripping matrix Q of distributed generation resource under rear accelerated modea.By the post reclosing acceleration side 3. obtained
Fault element recognition matrix P under formulaa, and each distributed generation resource interconnection exit breaker obtained in step 1 is combined to compile
Number matrix D g can obtain the Tripping matrix Q of distributed generation resource under rear accelerated modeaFor：
Wherein, QaFor the array of 1 × n, Qa,i6=1 indicates, as (Pa,i6=1) ∩ (i6 ∈ Dgj2) when, i.e. fault identification
Matrix PaIn the i-th 6 elements be 1, and i6 is the jth 2 in the breaker number matrix D g of distributed generation resource interconnection exit
When element, control centre sends trip signal to the breaker i6 in corresponding distributed generation resource interconnection exit；Remaining situation
Lower QaIn element be defaulted as 0, indicate that control centre does not send trip signal to corresponding breaker.
Step 8：According to fault element recognition matrix P under post reclosing acceleration modeaIt is exported with distributed generation resource interconnection
Place breaker number matrix D g forms the reclosing matrix R under rear accelerated modea.By under the post reclosing acceleration mode that 3. obtains
Fault element recognition matrix Pa, and combine each distributed generation resource interconnection exit breaker number square obtained in step 1
Battle array Dg can obtain reclosing matrix R under rear accelerated modeaFor：
RaFor the array of 1 × n, wherein Ra,i7=1 indicates, whenWhen, i.e. trip breaker
When i7 is not distributed generation resource interconnection exit breaker, control centre postpones tsetIt sends and overlaps to corresponding breaker i7
Lock allows order, wherein tsetIt is adjusted by breaker time, representative value 200ms, after IED receives reclosing order,
And Reclosing Instant arrives, then breaker is automatically performed closing operation；R in the case of remainingaMiddle element is defaulted as 0, indicates control
Center does not send reclosing to corresponding breaker allows order.
Step 9：Form distributed generation resource Tripping matrix Q under reclosing preacceleration modeb.When using reclosing preacceleration side
When formula, only a set of reclosing device is configured in each feed line exit.Distributed generation resource under reclosing preacceleration mode is formed to jump
Lock matrix includes the following steps：
1. according to event under feeder line outlet breaker number matrix E and fault message matrix F structure reclosing preacceleration mode
Hinder the correction matrix H' of information matrix.Under reclosing preacceleration mode, when detecting failure before reclosing action, in region
Power distribution network network topology structure matrix T and the construction method of fault message matrix F remain unchanged, and need to only be done to correction matrix H
It is appropriately modified, correction matrix is indicated with H' at this time.When using reclosing preacceleration mode, for containing n open circuit
The fault zone of device, k feeder line, H' matrix create-rules are：
Wherein, H' is n × n rank square formations, H 'i1For m × m rank square formations, m is the breaker number of the i-th 1 feeder lines, when the i-th 1
The fault-signal F of feeder line exit IEDE i1When=1, H 'i1Diagonal line on it is opposite with the i-th 1 feeder line exit breakers
The element answered is 1, i.e. H 'i1(1,1)=1；In addition, the breaker number matrix D L=[E of the i-th 1 feeder lines of structurei1,Ei1+1,…
Ei1+1- 1], and according to distributed generation resource interconnection exit breaker number matrix D g judged, if Dgj4=DLi8, that is, divide
When the number of cloth tie feeder exit 4 breakers of jth is in the breaker number matrix of the i-th 1 feeder lines, then record
Number Dgj4, enable Hi1(Dgj4-Ei1+1,Dgj4-Ei1+ 1)=1；Remaining element is 0；Break in distributed generation resource interconnection exit
Device corresponding element in road is 1, remaining element is 0；When the fault-signal of i-th feeder line exit IED is 0, H 'i1It is zero
Matrix.
2. forming revised fault message under reclosing preacceleration mode according to correction matrix H ' and fault message matrix F
Matrix Fb′.According to fault message matrix F and its correction matrix H ', revised fault message under former acceleration reclosure brake mode is obtained
Matrix Fb′：
Fb'=F × H ' (12)
3. according to power distribution network network topology structure matrix T and revised fault message matrix FbAdd before ' formation reclosing
Fault element recognition matrix P under fast modeb.Equally, fault zone network topology structure matrix T and fault message matrix are being determined
Fb' under conditions of, by Fb' the transposition for being multiplied by T can obtain fault element recognition matrix P under reclosing preacceleration modeb：
Pb=Fb′×TT (13)
4. according to fault element recognition matrix P under post reclosing acceleration modebIt is disconnected with distributed generation resource interconnection exit
Road device number matrix D g forms the Tripping matrix Q of distributed generation resource under preacceleration modeb.By the reclosing preacceleration side 3. obtained
Fault element recognition matrix P under formulab, and each distributed generation resource interconnection exit breaker obtained in step 1 is combined to compile
Number matrix D g can obtain the Tripping matrix Q of distributed generation resource under preacceleration modebFor：
Wherein, QbFor the array of 1 × n, Qb,i6=1 indicates, as (Pb,i6=1) ∩ (i6 ∈ Dgj2) when, i.e. fault identification
Matrix PbIn the i-th 6 elements be 1, and i6 is the jth 2 in the breaker number matrix D g of distributed generation resource interconnection exit
When element, control centre sends trip signal to the breaker i6 in corresponding distributed generation resource interconnection exit；Remaining situation
Lower QbIn element be defaulted as 0, indicate that control centre does not send trip signal to corresponding breaker.
Step 10：According to fault element recognition matrix P under post reclosing acceleration modebIt is exported with distributed generation resource interconnection
Locate the reclosing matrix R that breaker number matrix D g is formed under preacceleration modeb.By under the reclosing preacceleration mode that 3. obtains
Fault element recognition matrix Pb, and combine each distributed generation resource interconnection exit breaker number square obtained in step 1
Battle array Dg can obtain reclosing matrix R under preacceleration modebFor：
RbFor the array of 1 × n, wherein Rb,i7=1 indicates, whenWhen, i.e. trip breaker
When i7 is not distributed generation resource interconnection exit breaker, control centre postpones tsetIt sends and overlaps to corresponding breaker i7
Lock allows order, wherein tsetIt is adjusted by breaker time, representative value 200ms, after IED receives reclosing order,
And Reclosing Instant arrives, then breaker is automatically performed closing operation；R in the case of remainingbMiddle element is defaulted as 0, indicates control
Center does not send reclosing to corresponding breaker allows order.
Next the power distribution network of structure typical DG accesses as shown in Figure 2, and come to being suitable for point by taking the fault points F3 as an example
The power distribution network automatic reclosing control method of cloth plant-grid connection is described in detail.
(1) according to the numbering principle in step 1, digital number is carried out to breaker all in region, as shown in Figure 2.
(2) forming each feeder line exit breaker number matrix E is：E=[1 4 9]
Further, forming distributed generation resource interconnection exit breaker number matrix D g in each feeder line is：Dg=[8
13]
(3) power distribution network topological structure matrix T in region is built according to established rule：
(4) control word W is set, and is provided：
(5) the fault initiating information that IED equipment uploads at each breaker is obtained.When breaking down at F3, K4, K5, K6,
K8, K13 will upload fault initiating signal, and therefore, can form fault message matrix F is：F=[0 0011101000
0 1]
(6) as W=1, it is specified that power distribution network uses post reclosing acceleration mode, and on this basis, post reclosing acceleration
Distributed generation resource Tripping matrix Q under modeaWith reclosing matrix R under accelerated mode after formationa；Otherwise, it as W=0, redirects and holds
Row (9).
(7) distributed generation resource Tripping matrix Q under post reclosing acceleration mode is formeda.Power distribution network in Fig. 2 is arranged typical
Fault point as shown in figure 3, and being illustrated so that F3 points break down as an example.
1. building the correction matrix H of fault message matrix.When F3 points break down, due to the 2nd article of feeder line L2 exit IED
Fault-signal FE2=1, H can be obtained2、H1、H3For：
Therefore the correction matrix H that can obtain fault message matrix is：
2. obtaining revised fault message matrix Fa'=F × H is：
Fa'=[0 00111010000 0]
3. by Fa' the transposition for being multiplied by T can arrive fault element recognition matrix Pa=Fa′×TTFor：Pa=[0 00321
0 3 0 0 0 0 0]
Wherein, RA, 6=1 when showing that F3 points break down, and breaker K6 instantaneous trippings cut off failure, at this point, control centre
Delay 200ms only sends reclosing to breaker K6 allows order, and IED, which receives reclosing, at K6 allows order, and when reclosing
After being carved into, it is automatically performed reclosing operation.
(9) the Tripping matrix Q of distributed generation resource under reclosing preacceleration mode is formedb.Allusion quotation is arranged to the power distribution network in Fig. 2
The fault point of type by taking F3 points break down as an example as shown in figure 4, equally illustrate.
1. building the correction matrix H' of fault message matrix.When F3 points break down, due to the 2nd article of exit feeder line L2
The fault-signal F of IEDE2=1, therefore H2Breaker corresponding element in this feeder line exit is 1 on ' diagonal line, i.e. H2' (1,1)=
1；In addition, the number matrix D L=[4 567 8] of the 2nd article of feeder breaker of structure, and Dg1=DL5, at this point, record number
Dg1=8, H can be obtained2(5,5)=1；Remaining element is 0.Therefore, H can be obtained2′、H1′、H3' be：
Therefore the correction matrix H ' that can obtain fault message matrix is：
2. obtaining revised fault message matrix Fb'=F × H ' is：
Fb'=[0 00100010000 0]
3. by Fb' the transposition for being multiplied by T can arrive fault element recognition matrix Pb=Fb′×TTFor：
Pb=[0 00100010000 0]
4. forming the Tripping matrix Q of distributed generation resource under preacceleration modeb.Due to Pb,4=1, Pb,8=1, and 8 ∈ [8
13], the Tripping matrix Q of distributed generation resource under preacceleration mode can be obtainedbFor：
Qb=[0 00000010000 0]
Wherein, Qb,8=1, Qb,13=0 when showing that F3 points break down, breaker K4 immediate trips, and control centre to
The breaker K8 in distributed generation resource interconnection exit sends trip signal, and shunt tripping breaker K8 cuts off distributed generation resource, but controls
Center processed does not send trip signal to breaker K13.
Wherein, Rb,4=1 when showing that F3 points break down, breaker K4 instantaneous trippings, the K8 excision distributions of shunt tripping breaker
Formula power supply, after breaker K8 tripping, control centre delay 200ms only sends reclosing to breaker K4 allows order, not to
Breaker K8, which sends reclosing, allows order.Therefore after IED receives reclosing and allows order at K4, and Reclosing Instant arrives, automatically
Complete reclosing operation.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of power distribution network automatic reclosing control method suitable for distributed generation resource access, which is characterized in that including following
Step：
S1：Digital number is carried out to breaker all in power distribution network；
S2：It is formed according to the breaker after number distributed in each feeder line exit breaker number the first matrix E and each feeder line
Tie feeder exit the second matrix D of breaker number g；
S3：The network topology structure third matrix T of power distribution network is formed according to the breaker after number；
S4：According to reclosing mode used by power distribution network, setting reclosing mode control word W；
S5：The fault initiating information that IED equipment uploads at each breaker is obtained by communication mode, forms fault message matrix F；
S6：According to the reclosing mode control word W, reclosing mode is judged, if reclosing mode control word is preacceleration side
Formula is then transferred to step S9；If reclosing mode control word is rear accelerated mode, it is transferred to step S7；
S7：Distributed generation resource Tripping matrix Q under accelerated mode after formationa, and cut off that faulted line segment downstream accessed is distributed
Formula power supply；
S8：Reclosing matrix R after formation under accelerated modea, and reclosing control is carried out to relative breaker according to reclosing matrix
System；
S9：Form distributed generation resource Tripping matrix Q under preacceleration modeb, and cut off feeder line where faulted line segment accessed it is all
Distributed generation resource；
S10：Form the reclosing matrix R under preacceleration modeb, and reclosing is carried out to relative breaker according to reclosing matrix
Control；
Step S7 is specially：
S71：According under feeder line outlet breaker number the first matrix E and fault message matrix F structure post reclosing acceleration mode
Fault message matrix correction matrix H；
Wherein, H is n × n rank square formations, and n is the number of breaker in power distribution network；Hi1For m × m rank square formations, m is the i-th 1 feeder lines
Breaker number, as the fault-signal F of the i-th 1 feeder line exit IEDE i1When=1, Hi1For unit matrix, otherwise Hi1For zero moment
Battle array；
S72：Revised fault message square under post reclosing acceleration mode is formed according to correction matrix H and fault message matrix F
Battle array F 'a=F × H；
S73：According to power distribution network network topology structure third matrix T and revised fault message matrix F 'aAdd after forming reclosing
Fault element recognition matrix P under fast modea=F 'a×TT；
S74：According to fault element recognition matrix P under post reclosing acceleration modeaWith distributed generation resource interconnection exit breaker
The second matrix D of number g forms the Tripping matrix of distributed generation resource under rear accelerated mode
Wherein, QaFor the array of 1 × n, Qa,i6=1 indicates, as (Pa,i6=1) ∩ (i6 ∈ Dgj2) when, i.e. fault identification matrix
PaIn the i-th 6 elements be 1, and i6 is 2 members of jth in the breaker number matrix D g of distributed generation resource interconnection exit
When plain, control centre sends trip signal to the breaker i6 in corresponding distributed generation resource interconnection exit；In the case of remaining
QaIn element be defaulted as 0, indicate that control centre does not send trip signal to corresponding breaker.
2. power distribution network automatic reclosing control method as described in claim 1, which is characterized in that accelerated mode after in step S8
Under reclosing matrix
Wherein, RaFor the array of 1 × n, Ra,i7=1 indicates, whenWhen, i.e. trip breaker i7 is not
When being distributed generation resource interconnection exit breaker, control centre postpones tsetReclosing is sent to corresponding breaker i7 to permit
Perhaps it orders, after IED receives reclosing order, and Reclosing Instant arrives, then breaker is automatically performed closing operation；Remaining situation
Lower RaMiddle element is defaulted as 0, indicates that control centre does not send reclosing to corresponding breaker and allows order.
3. power distribution network automatic reclosing control method as described in claim 1, which is characterized in that step S9 is specially：
S91：According under feeder line outlet breaker number the first matrix E and fault message matrix F structure reclosing preacceleration mode
The correction matrix H' of fault message matrix；
Wherein, H' is n × n rank square formations, and n is the number of breaker in power distribution network；H′i1For m × m rank square formations, m is the i-th 1 feeder lines
Breaker number, as the fault-signal F of the i-th 1 feeder line exit IEDE i1When=1, H 'i1Diagonal line on the i-th 1 feedbacks
Breaker corresponding element in line exit is 1, i.e. H 'i1(1,1)=1；In addition, the breaker number square of the i-th 1 feeder lines of structure
Battle array DL=[Ei1,Ei1+1,…Ei1+1- 1], and according to distributed generation resource interconnection exit breaker number matrix D g sentenced
It is disconnected, if Dgj4=DLi8, i.e. breaker of the number of 4 breakers of distributed generation resource interconnection exit jth in the i-th 1 feeder lines
When in number matrix, then record number Dgj4, enable Hi1(Dgj4-Ei1+1,Dgj4-Ei1+ 1)=1；Remaining element is 0；It is distributed
The corresponding element of breaker in tie feeder exit is 1, remaining element is 0；When i-th feeder line exit IED's
When fault-signal is 0, H 'i1For null matrix；
S92：Revised fault message square under reclosing preacceleration mode is formed according to correction matrix H ' and fault message matrix F
Battle array F 'b=F × H '；
S93：According to power distribution network network topology structure third matrix T and revised fault message matrix F 'bAdd before forming reclosing
Fault element recognition matrix P under fast modeb=F 'b×TT；
S94：According to fault element recognition matrix P under post reclosing acceleration modebWith distributed generation resource interconnection exit breaker
The second matrix D of number g forms the Tripping matrix of distributed generation resource under preacceleration mode
Wherein, QbFor the array of 1 × n, Qb,i6=1 indicates, as (Pb,i6=1) ∩ (i6 ∈ Dgj2) when, i.e. fault identification matrix
PbIn the i-th 6 elements be 1, and i6 is 2 elements of jth in the breaker number matrix D g of distributed generation resource interconnection exit
When, control centre sends trip signal to the breaker i6 in corresponding distributed generation resource interconnection exit；Q in the case of remainingb
In element be defaulted as 0, indicate that control centre does not send trip signal to corresponding breaker.
4. power distribution network automatic reclosing control method as claimed in claim 3, which is characterized in that preacceleration side in step S10
Reclosing matrix under formula
Wherein, RbFor the array of 1 × n, Rb,i7=1 indicates, whenWhen, i.e. trip breaker i7 is not
When being distributed generation resource interconnection exit breaker, control centre postpones tsetReclosing is sent to corresponding breaker i7 to permit
Perhaps it orders, after IED receives reclosing order, and Reclosing Instant arrives, then breaker is automatically performed closing operation；Remaining situation
Lower RbMiddle element is defaulted as 0, indicates that control centre does not send reclosing to corresponding breaker and allows order.
5. the power distribution network automatic reclosing control method as described in claim 2 or 4, which is characterized in that tsetBy circuit breaker trip
Time setting, representative value 200ms.
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| CN103259265A (en) * | 2013-06-06 | 2013-08-21 | 山东大学 | Power network partitioning and detached island identification method of intelligent power distribution network based on reachability matrix |
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