CN109858672A - Consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied - Google Patents
Consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied Download PDFInfo
- Publication number
- CN109858672A CN109858672A CN201811605248.5A CN201811605248A CN109858672A CN 109858672 A CN109858672 A CN 109858672A CN 201811605248 A CN201811605248 A CN 201811605248A CN 109858672 A CN109858672 A CN 109858672A
- Authority
- CN
- China
- Prior art keywords
- load
- region
- turn
- regional area
- capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of main adapted integration scope of power outage appraisal procedures that consideration regional internet turns to supply, and constitute scope of power outage assessment system based on scope of power outage evaluation module.This method is first according to existing power system network topological connection relation, and to the electric system subregion, being formed simultaneously cyberrelationship matrix and load can turn for region.When certain region is broken down or overhauled, defining load can turn to realize the rationally turn confession of failure load according to the magnitude for region capacity-load ratio, assess fault outage range.On this basis, during sharing of load, it is contemplated that the constraint condition of interconnection circuit realizes the optimization based on a load transfer method and turns to further reduce fault outage range for strategy.By emulating and network analysis shows to can effectively improve the service efficiency of equipment, realize that fault zone load rationally turns for consumption, to reduce failure or maintenance bring loss of outage.
Description
Technical field
The invention belongs to power system loads to turn for field, more particularly to consider network system network topology structure and function
Rate constraint condition realizes load transfer to fault zone.
Background technique
In recent years, with the constant growth of Chinese national economy, demand of all trades and professions to electric power is increased rapidly, but
Since Construction of Intercity Network comparatively lags, lead to the unreasonable than more prominent of electric network composition, this, which is difficult to meet, uses
Requirement of the family to power quality, power supply reliability etc..Especially because the rise of the tertiary industry, the structure of electric load also occurs
Variation, medium and small user includes that residential electricity consumption ratio rises year by year, and causes the route in city electric distribution system increasingly longer, node
More and more, structure becomes increasingly complex, thus the probability to break down also increases accordingly.When power distribution network breaks down, need to the greatest extent
Fast excision faulty equipment, then should restore the power supply to customer charge as soon as possible, reduce the range for having a power failure and influencing as far as possible, thus
Greatly reduce as power failure and caused by social influence and economic loss etc., meanwhile, should also be reduced as far as possible after troubleshooting
The loss of supply network after failure improves the performances such as power supply reliability and equilibrium assignment load.
Power distribution network can cut off route after breaking down by adjusting the folding condition of interconnection switches and block switch
Failure shifts failure zone of influence internal loading, changes the method for operation etc. of power grid, the as far as possible range of reduction failure influence, thus
The economy and safety of operation of power networks are improved, guarantees the power supply quality to customer charge.Load transfer can obviously be dropped because of it
Low failure bring loss, improves system power supply reliability, and becomes one of the important core function in Automation System of Power Network.
The widely used method of Utilities Electric Co. is substantially based on empirical approach and provides corresponding operation scheme at present, because
This, can not carry out the selection of operation scheme optimality and most loads are shifted, i.e., scope of power outage is minimum；It is multiple when having
When overload and fault outage occurs in place, it can not realize that load shifts in phase；Enough scheme realizations again can not be rationally provided to set
The equilibrium of standby load.
The scheme that current empirical approach provides simultaneously often requires that traffic control personnel have good experience, to being
System equipment has very deep understanding and grasp, so that traffic control personnel are increased with very big operating pressure.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention is based on interconnecting relation, propose that a kind of distribution network failure region is negative
Lotus turns for strategy, which, according to existing distribution network topology connection relationship, forms under power distribution network normal operation
Cyberrelationship matrix and load transfer region.When power distribution network main transformer breaks down or overhauls, load transfer is defined first
Cell capacity-load ratio realizes the reasonable distribution of failure load.On this basis, during sharing of load, it is contemplated that interconnection line
The constraint condition of road and main transformer capacity realizes the optimization based on a load transfer and turns for strategy.The emulation and analysis side
Method can effectively improve the service efficiency of equipment, realize that distribution network load turns to supply, and stop to reduce failure or overhaul bring
Electric loss.
To achieve the above object, the present invention specifically uses following technical scheme:
A kind of main adapted integration scope of power outage appraisal procedure for considering regional internet and turning to supply, which is characterized in that the side
Method the following steps are included:
Step 1: acquire the connection number of each node of distribution in main adapted integral system accordingly and interconnection circuit capacity about
Beam data simultaneously initializes；
Step 2: according to the connection data of each node of distribution, establishing cyberrelationship matrix；
Step 3: dividing load can turn for region；
Step 4: first order calculation load turns to turn for amount；
Step 5: whether the load transfer amount calculated of judgment step 4 meets interconnection circuit capacity constraints, if meeting
Constraint, enters step 6, otherwise enters step 7；
Step 6: turning to carry out turning for strategy supplying according to first order load, subsequently into step 8；
Step 7: then carrying out turning to supply by optimization load transfer strategy, subsequently into step 8；
Step 8: finally assessing scope of power outage.
The present invention further comprises following preferred embodiment:
It in step 2, is n main region, every 1 substation by the Topology partition in distribution using substation as core
Coverage area is a main region, and it is 1,2 that n main region is numbered respectively ..., n；
Partial-block is carried out inside each main region, and part point is divided as core using each main transformer of each substation administration
There is N in area in one substationnA main transformer, then be divided into NnA regional area, respectively N1, N2,…,Nn。
The cyberrelationship matrix A for defining the region is the network for the partial-block that each main transformer in each main region divides
Relationship
In formula, if there are interconnecting relation, a between regional area i and regional area ji,j=1；If regional area i drawn game
Interconnecting relation is not present between the j of portion region, then ai,j=0, this is represented in the main transformer failure or maintenance of regional area i, partial zones
The main transformer of domain j can not directly turn the load for regional area i main transformer.
In step 3, if regional area i is because of failure or maintenance out of service, regional area i is known as fault zone,
Definition is that load can turn for region by all junior's interconnection regions of core of this fault zone；
The load can turn to include level-1 area and level-2 area, the regional area being directly connected to fault zone for region
For level-1 area, there are the regional areas of communication relationship to be known as level-2 area with level-1 area.
In step 4, first order calculation load can turn for amount when, except directly mount load in addition to, other feeder loads by than
Example distribution can turn for load, and regional area j is calculated according to the following formula and turns to turn for power for load:
Pj,T1Representing the region j load can turn for amount
piFor the load of fault zone i, pbiFor the direct mounting load of fault zone i,To indicate all areas
The sum of capacity-load ratio, rjIndicate the capacity-load ratio in the region j.
In step 4, when fault zone is i, if regional area j is in load and can turn for calculating part in region
The capacity-load ratio r of region jj；If the region regional area j, which is not located at load, can turn in region, capacity-load ratio rj=0, fault zone
The capacity-load ratio r of oneself of iiIt is 0, specific formula for calculation is as follows:
Wherein, wk、pkThe rated capacity of expression fault zone k and contained load；pbiFor all direct extensions of fault zone i
Load is connect, j ∈ x indicates that fault zone j belongs to No. x substation, wherein the direct mounting load refers in each main region,
By turning to supply in the main region substation, not by turning to supply between substation station；ajkFor characterizing regional area j and regional area
The interconnecting relation of k is 1 if there is the interconnecting relation value, and interconnecting relation is not present, which is 0；wiIndicate i pairs of fault zone
Answer the rated capacity of main transformer, piIndicate that fault zone i corresponds to the contained load of main transformer, N indicates the total number of units of main transformer in main region.
In steps of 5, can turn whether meet interconnection for amount according to the first order load that following criterion judgment step 4 is calculated
Line power constraint condition；
G=MAX { PT1-Ti,0}
Wherein, PT1=[P1,T1,…,Pj,T1,…,PN,T1]
PT1It indicates primary to turn to turn for the load of regional area each in strategy for measuring sequence, wherein Pj,T1Partial zones are worked as in expression
When the i failure of domain, the load of regional area j can turn for amount；TiIndicate the i-th row of interconnection circuit capacity matrix T, i.e. regional area i
The maximum capacity that interconnection circuit between other regional areas can carry；
G is a matrix-vector, and wherein jth is classified as Gj, when indicating regional area i failure, regional area j and regional area
Interconnection circuit power constraints between i；
Work as GjWhen=0, show that the interconnection circuit capacity between regional area i and regional area j meets load transfer requirement,
It is i.e. no out-of-limit, work as GjWhen > 0, represents the interconnection circuit capacity between regional area i and regional area j and be unsatisfactory for a load
Turn for requiring.
In step 6, a load transfer vector P being calculated according to step 4T1It carries out turning to supply.
In step 7, it carries out turning to supply according to optimization load transfer strategy, when regional area i failure, if regional area j
Turn for regional area i interconnection circuit it is out-of-limit, then the load transfer amount of this route oepration at full load, other regional areas is pressed
Formula optimizes:
In formula, Pg,T1The region g load after representing optimized can turn for amount, piFor the load of fault zone i, pbiFor faulty section
The direct mounting load of domain i, rgIndicate the capacity-load ratio of regional area g,Indicate the sum of all areas capacity-load ratio,It represents
The sum of the capacity-load ratio of each out-of-limit route, p are the numbers of out-of-limit route, i.e. G=MAX { PT1-Ti, 0 } in non-zero element number, N
Indicate the total number of units of main transformer of main region；Indicate: will directly mount load with(all out-of-limit routes can be held
Load limit load total amount) subtract after, reasonable distribution to other non-out-of-limit routes.In step 8, whether be calculate by the following formula needs
Load is cut off, to assess scope of power outage:
When region, i breaks down or overhauls, the required load got rid of is Δ Pi:
ΔPi=pi-pbi-sum(PT)
Wherein, sum is represented can turn to sum for amount to the load of each regional area, as Δ PiWhen=0, representing fault region i
Load can all turn to supply, representative break down but do not generate scope of power outage；As Δ PiWhen > 0, represent due to the interconnection line appearance of a street
The load of amount constraint, fault zone i also can not all turn to supply by optimization amendment, need to carry out excision load by operator
Operation, assesses final scope of power outage.
Compared with the existing technology, the invention has the following beneficial technical effects:
1. the definition that proposing load can turn for region is capable of providing primary negative based on interregional interconnecting relation
Lotus turns for strategy.
2. consider the power constraints of route, can more reasonable arrangement load transfer strategy, pass through practical calculating
Load transfer strategy after providing optimization, can effectively dissolve load according to the strategy.
Detailed description of the invention
Fig. 1 is the process that consideration regional internet disclosed by the invention turns the main adapted integration scope of power outage appraisal procedure supplied
Schematic diagram；
Fig. 2 is that main transformer of the present invention interconnects power distribution network example embodiment topology schematic diagram.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings of the specification.
As shown in Fig. 1, consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied for the present invention
Flow diagram.The present invention specifically includes the following steps:
Step 1: acquire the connection number of each node of distribution in main adapted integral system accordingly and interconnection circuit capacity about
Beam data simultaneously initializes；
Step 2: according to the connection data of each node of distribution, establishing cyberrelationship matrix；
If certain electric system, using substation as core subregion, shared n main region, which is defined as dividing in system, n power transformation
It stands, 1 substation's coverage area is a region, and number is 1,2 respectively ..., n, corresponding to administer model in substation
It encloses and carries out partial-block inside interior each region, partial-block represents inside and carries out subregion using each substation administration main transformer as core,
There is N in one substationnA main transformer can then be planned to be divided into NnA region, respectively N1, N2,…,Nn, define the net in the region
Network relational matrix A is
In formula, if there are interconnecting relation, a between regional area i and ji,j=1, if regional area i and regional area j it
Between interconnecting relation, then a is not presenti,j=0 represents the communication relationship between region, exists and is directly connected to i.e. 1, and being not present then is 0,
During representing main transformer i internal fault or maintenance, main transformer j can not directly turn for the load in main transformer i.
Step 3: dividing load can turn for region；
The present invention divides load transfer region on the basis of defining cyberrelationship matrix.
Load can turn to define for region: in certain electric system, due to being that regional internet turns to supply, if major network substation is
For fault zone, the region directly connected is defined as level-1 area.Two are defined as with the region that level-1 area directly interconnects
Grade region needs to reduce as far as possible the range that failure influences, so needing to failure when power grid area fault or maintenance
Region load carries out turning to supply.The region that load can turn to supply, which is known as load, can turn for region, and load, which can turn donor site domain representation, event
It is all mutually that the region that the barrier all level-1 areas in region and level-2 area are constituted can regard the junior that its region is fault zone as
Join region.
If Grid i is because of failure or maintenance out of service, define mutual as all juniors of core using this fault zone
Connection region is that load can turn for region.
Bi={ b1,…,bj,…bN} (2)
Wherein, bjIndicate that the jth load of fault zone junior can turn for region.If region j is not belonging to the level-one of region i
Region (level-1 area indicates the region for being directly connected to fault zone i, i.e. level-1 area indicates directly to interconnect), i.e. ai,j=0 bj
=0, which represents the region, cannot provide load support to fault zone, and simultaneous faults region itself cannot form load transfer region,
That is bi=0.
Step 4: forming first order load can turn for amount；
The direct mounting load all for fault zone i is divided in original in the i of fault zone and carries all loads, can
Only by turning in station for (having n substation in system, having N in each substation's coverage areanA main transformer, in substation with
Main transformer is that core is divided into NnA region, Zhan Neizhige substation station in), do not need interconnection turn supply.Donor site can be turned by defining load
The capacity-load ratio in domain are as follows:
Wherein, wk、pkThe rated capacity of expression fault zone k and contained load；pbiFor all direct extensions of fault zone i
Load is connect, j ∈ x indicates that fault zone j belongs to No. x substation, wherein the direct mounting load refers in each main region,
By turning to supply in the main region substation, not by turning to supply between substation station；ajkFor characterizing regional area j and regional area
The interconnecting relation of k is 1 if there is the interconnecting relation value, and interconnecting relation is not present, which is 0；wiIndicate i pairs of fault zone
Answer the rated capacity of main transformer, piIndicate that fault zone i corresponds to the contained load of main transformer, N indicates the total number of units of main transformer in main region.
According to the capacity-load ratio for acquiring fault zone, in addition to directly mounting load, other feeder loads reasonable distribution in proportion,
Keep distribution region load more balanced.So obtain load can turn for region j turn for load be
Wherein, piIndicate the load of region i；pbiThe direct mounting load carried by region i；rjIndicate load transfer
The capacity-load ratio of cell j,For the sum of the capacity-load ratio for indicating all areas, rjIndicate the capacity-load ratio in the region j.So a load
Turn for vector PT1=[P1,T1,…,Pj,T1,…,PN,T1]。
Step 5: whether the load transfer vector calculated of judgment step 4 meets interconnection circuit capacity constraints:
Definition interconnection capacity matrix T
Wherein, ti,jIndicate the maximum capacity that the interconnection circuit between region i and region j can carry；If two partial zones
Interconnecting relation is not present between domain, then ti,j=0, meanwhile, the interconnection circuit capacity t of itselfi,i=0.So the meaning of the i-th row is just
It is Ti=[ti,1…ti,j…ti,N], it is and PT1With a vector of dimension.If PT1Load can turn negative for certain region in vector
Lotus can turn (to be assumed to be m, i.e. P for amountm,T1) more than interconnection circuit capacity, that is, t of itself and fault zone ii,m, then difference is centainly greater than
0, just illustrate that the interconnection circuit capacity between the region i and m area is out-of-limit, that is, is unsatisfactory for power constraint.PT1It is by each region
(indicate to be exactly P with the region jj,T1) load can turn for amount constitute vector.
G=MAX { PT1-Ti,0}
Wherein, PT1=[P1,T1,…,Pj,T1,…,PN,T1]
PT1It indicates primary to turn to turn for the load of regional area each in strategy for measuring sequence, wherein Pj,T1Partial zones are worked as in expression
When the i failure of domain, the load of regional area j can turn for amount；TiIndicate the i-th row of interconnection circuit capacity matrix T, i.e. regional area i
The maximum capacity that interconnection circuit between other regional areas can carry；
G is a matrix-vector, and wherein jth is classified as Gj, when indicating regional area i failure, regional area j and regional area
Interconnection circuit power constraints between i；
Work as GjWhen=0, show that the interconnection circuit capacity between regional area i and regional area j meets load transfer requirement,
It is i.e. no out-of-limit, work as GjWhen > 0, represents the interconnection circuit capacity between regional area i and regional area j and be unsatisfactory for a load
Turn for requiring.
Step 6: turn to carry out turning for strategy supplying according to first order load:
According to the capacity-load ratio for acquiring fault zone, in addition to directly mounting load, other feeder loads reasonable distribution in proportion,
Keep distribution region load more balanced.So obtain load can turn for region j turn for load be
Wherein, piIndicate the load of region i；pbiThe direct mounting load carried by region i；rjIndicate load transfer
The capacity-load ratio of cell j.So a load transfer vector is
PT1=[P1,T1,…,Pj,T1,…,PN,T1]
Load transfer vector indicates a load transfer strategy.
Step 7: turn to supply according to optimization load transfer vector:
In step 7, it carries out turning to supply according to optimization load transfer strategy, when regional area i failure, if regional area j
Turn for regional area i interconnection circuit it is out-of-limit, then the load transfer amount of this route oepration at full load, other regional areas is pressed
Formula optimizes:
In formula, Pg,T1The region g load after representing optimized can turn for amount, piFor the load of fault zone i, pbiFor faulty section
The direct mounting load of domain i, rgIndicate the capacity-load ratio of regional area g,Indicate the sum of all areas capacity-load ratio,It represents
The sum of the capacity-load ratio of each out-of-limit route, N indicate main region the total number of units of main transformer (Expression will directly mount negative
Lotus with
After considering interconnection circuit capacity constraints, it is first determined out-of-limit interconnection circuit eventually forms optimization load
Turn for vector:
PT2=[P1,T1,…,ti.j,…Pg,T2,…,PN,T2]
PT2Representing optimized load transfer vector, ti.jRepresent the capacity of trunk in the region i Yu the region j.Since the region j is out-of-limit, only
Energy full power turns for so ti.j。
Step 8: assessment scope of power outage.
When region, i breaks down or overhauls, if the required load got rid of is Δ Pi, calculation formula is following formula:
ΔPi=pi-pbi-sum(PT2) (8)
Wherein, sum, which is represented, all sums to vector internal numeric, as Δ PiWhen being 0, the load of representing fault region i can
All to turn to supply, representative breaks down but does not generate scope of power outage；As Δ PiWhen greater than 0, represent due to interconnection circuit capacity about
The load of beam, fault zone i also can not all turn to supply by optimization amendment, need to carry out to cut off load behaviour by operator
Make, assesses final scope of power outage.
According to vector PT(be calculated no out-of-limit, then final PT=PT1, if there is out-of-limit phenomenon, then PT=PT2。)
The load transfer strategy of expression turns to supply, Δ PiIt indicates to turn the load that can not be dissolved after supplying, Δ P according to the strategyi=0 represents entirely
Portion's consumption does not need excision load, Δ Pi> 0, which represents faulty region i, has sub-load that can not be dissolved by remaining region, can be with
The load that the region i needs to cut off the amount is calculated.)
1. after main transformer failure, regional area has a power failure comprising load.
2. carrying out " distribution according to need " to failure main transformer load based on load transfer cell capacity-load ratio.During distribution,
For interconnection circuit capacity constraints, optimization load transfer strategy is executed, failure main transformer load is dissolved, thus to mistake
Electricity is restored, and load is shifted.
Scope of power outage assessment strategy:
1. excluding directly mounting load, remaining load is divided into two classes according to importance in advance: important load with it is insignificant
Load, when carrying out load excision, the excision of important load influences to influence much larger than the excision of the insignificant load of equivalent.
2. establishing load excision search strategy, the smallest load of load in two type loads is searched for, is cut off, if the portion
Dividing load is Pi 1, while removing the load in insignificant load.
3. setting excision load total amount as sumPiIf sumPi>ΔPiIt then stops search and cuts off, enter step 5, if
sumPi<ΔPiIt then continues searching, cuts off the load minimum load in remaining load, if not after important load excision, it is also less than
Foot excision total amount condition, then enter step 4.
4. Operation switch provides moving emergency power supply power supply to important load, enters step 5.
5. power failure equipments are according to the loaded portion of the excision after step 4 and step 5 operation, which is in power loss
State realizes the assessment to the scope of power outage of fault zone i.
The main transformer interconnection power distribution network topology in 2 is used as embodiment with reference to the accompanying drawing, to technical solution of the present invention progress
It introduces.
Step 1: acquire the connection number of each node of distribution in main adapted integral system accordingly and interconnection circuit capacity about
Beam data simultaneously initializes.
In the present embodiment, the connection number of each node of distribution is accordingly and interconnection circuit capacity-constrained data are as shown in table 1:
Table 1 gets in touch with branch data
Step 2: according to the connection data of each node of distribution, establishing cyberrelationship matrix
Step 3: dividing load can turn for region
Analog simulation is carried out by taking 5 failure of region as an example, verifying load specializes in the validity of strategy.First according to Topology connection
Relationship calculating can be turned for the load of core for region B with region 55For
B5=[0 b2 0 b4 0 b6 0 0 0 0] (9)
Step 4: calculated load can turn the capacity-load ratio for region, form first order load and turn to turn for vector；
Following table is to calculate each load to turn capacity-load ratio for region
1 load of table can turn the capacity-load ratio for region
| Load can turn for region | b2 | b4 | b6 |
| Zone number | 1、2、3、9 | 3、4 | 6、9、10 |
| It can turn for region capacity-load ratio | 1.4841 | 1.5909 | 1.5305 |
Load transfer vector PT1For
PT1=[0 7.8 0 8.36 0 8.04 000 0] (10)
Step 5: judge that first order load turns whether to meet interconnection circuit capacity constraints for strategy, if meeting constraint, into
Enter step 6, otherwise enters step 7
Turn in the main adapted integral system scope of power outage appraisal procedure supplied in consideration regional internet proposed by the present invention, often
Interconnection circuit has capacity limit, therefore the load of each main region can turn for measuring the capacity limit by interconnection circuit, must not
More than load maximum capacity.
Interconnection circuit capacity matrix are as follows:
Interconnection circuit capacity-constrained judges that vector G is
G=[0 00 4.2 00000 0] (11)
The result shows that line power capacity overload between the 4-5 of region, is unsatisfactory for constraint condition.
Step 7: then carrying out turning to supply by optimization load transfer strategy, subsequently into step 8；
Capacity overload 4.2MW, so fault zone needs to cut off the load of 4.2MW under a load transfer scheme, it should
Sub-load is power supply interrupted district.So judging vector calculation optimization load transfer vector P according to constraintT2, result is
PT1=[0 10.23 0 4.12 0 9.85 000 0] (12)
The vector illustrates the optimisation strategy of load transfer.
Step 8: finally assessing scope of power outage.
By (8) formula, the load that the needs of fault zone 5 are got rid of is
ΔPi=0MW (13)
By IEEE interconnected network system example carry out specific emulation and analysis shows, it can be seen that the optimization mentioned is negative
Lotus turns effectively provide load transfer strategy for method, this strategy can be by interconnection region to the whole in region 5 of breaking down
Load is effectively carried, and is used load that can turn to be allocated fault zone load for index for region capacity-load ratio, can be made
Load consumption more balances, while improving the load transfer ability and equipment efficiency of usage of this system, effectively reduces power failure
Range.
Present invention applicant combines Figure of description to be described in detail and describe implementation example of the invention, still
It should be appreciated by those skilled in the art that implementing example above is only the preferred embodiments of the invention, explanation is only in detail
Help reader more fully understands spirit of that invention, and it is not intended to limit the protection scope of the present invention, on the contrary, any be based on this hair
Any improvement or modification made by bright spirit should all be fallen within the scope and spirit of the invention.
Claims (10)
1. a kind of main adapted integration scope of power outage appraisal procedure for considering regional internet and turning to supply, which is characterized in that the method
The following steps are included:
Step 1: acquiring the connection number of each node of distribution in main adapted integral system accordingly and interconnection circuit capacity-constrained number
According to and initialize；
Step 2: according to the connection data of each node of distribution, establishing cyberrelationship matrix；
Step 3: dividing load can turn for region；
Step 4: first order calculation load turns to turn for amount；
Step 5: whether the load transfer amount calculated of judgment step 4 meets interconnection circuit capacity constraints, if meeting constraint,
6 are entered step, otherwise enters step 7；
Step 6: turning to carry out turning for strategy supplying according to first order load, subsequently into step 8；
Step 7: then carrying out turning to supply by optimization load transfer strategy, subsequently into step 8；
Step 8: finally assessing scope of power outage.
2. according to claim 1 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied, special
Sign is:
It in step 2, is n main region by the Topology partition in distribution using substation as core, every 1 substation covering
Range is a main region, and it is 1,2 that n main region is numbered respectively ..., n；
Partial-block is carried out inside each main region, using each main transformer of each substation administration as core division partial-block, one
There is N in a substationnA main transformer, then be divided into NnA regional area, respectively N1, N2,…,Nn。
3. according to claim 2 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied, special
Sign is:
The cyberrelationship matrix A for defining the region is the cyberrelationship for the partial-block that each main transformer in each main region divides
In formula, if there are interconnecting relation, a between regional area i and regional area ji,j=1；If regional area i and partial zones
Interconnecting relation is not present between the j of domain, then ai,j=0, this is represented in the main transformer failure or maintenance of regional area i, regional area j
Main transformer can not directly turn the load for regional area i main transformer.
4. according to claim 1 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied, special
Sign is:
In step 3, if regional area i is because of failure or maintenance out of service, regional area i is known as fault zone, definition
It is that load can turn for region by all junior's interconnection regions of core of this fault zone；
The load can turn to include level-1 area and level-2 area for region, and the regional area being directly connected to fault zone is one
Grade region, there are the regional areas of communication relationship to be known as level-2 area with level-1 area.
5. according to claim 1 or 4 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied,
It is characterized in that:
In step 4, when first order calculation load can turn for amount, in addition to directly mounting load, other feeder loads are divided in proportion
With can turn for load, regional area j is calculated according to the following formula and turns to turn for power for load:
Pj,T1Representing the region j load can turn for amount
piFor the load of fault zone i, pbiFor the direct mounting load of fault zone i,For the capacity-load ratio for indicating all areas
The sum of, rjIndicate the capacity-load ratio in the region j.
6. according to claim 5 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied, special
Sign is:
In step 4, when fault zone is i, if regional area j is in load and can turn in region, calculating regional area j
Capacity-load ratio rj；If the region regional area j, which is not located at load, can turn in region, capacity-load ratio rj=0, fault zone i from
Oneself capacity-load ratio riIt is 0, specific formula for calculation is as follows:
Wherein, wk、pkThe rated capacity of expression fault zone k and contained load；pbiIt is negative for all directly mountings of fault zone i
Lotus, j ∈ x indicates that fault zone j belongs to No. x substation, wherein the direct mounting load refers in each main region, by this
Turn to supply in main region substation, not by turning to supply between substation station；ajkFor characterizing regional area j's and regional area k
Interconnecting relation is 1 if there is the interconnecting relation value, and interconnecting relation is not present, which is 0；wiIndicate the corresponding master of fault zone i
The rated capacity of change, piIndicate that fault zone i corresponds to the contained load of main transformer, N indicates the total number of units of main transformer in main region.
7. according to claim 5 or 6 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied,
It is characterized in that:
In steps of 5, interconnection circuit capacity matrix T is initially set up
Wherein, ti,jIndicate the maximum capacity that the interconnection circuit between region i and region j can carry；If two regional areas it
Between interconnecting relation, then t is not presenti,j=0, meanwhile, the interconnection circuit capacity t of itselfi,i=0；Interconnection circuit capacity matrix T i-th
Behavior Ti=[ti,1 … ti,j … ti,N], it is and PT1With a vector of dimension；If PT1Load can turn for certain in vector
Region load can turn (to be assumed to be m, i.e. P for amountm,T1) more than interconnection circuit capacity, that is, t of itself and fault zone ii,m, then difference one
Surely it is greater than 0, just illustrates that the interconnection circuit capacity between the region i and m area is out-of-limit, that is, be unsatisfactory for power constraint；PT1It is by each
The load in a region can turn the vector constituted for amount；
Then can turn whether meet interconnection circuit power about for amount according to the first order load that following criterion judgment step 4 is calculated
Beam condition；
G=MAX { PT1-Ti,0}
Wherein, PT1=[P1,T1,…,Pj,T1,…,PN,T1]
PT1It indicates primary to turn to turn for the load of regional area each in strategy for measuring sequence, wherein Pj,T1It indicates to work as regional area i
When failure, the load of regional area j can turn for amount；TiIndicate interconnection circuit capacity matrix T the i-th row, i.e. regional area i and its
The maximum capacity that interconnection circuit between its regional area can carry；
G is a matrix-vector, and wherein jth is classified as Gj, when indicating regional area i failure, between regional area j and regional area i
Interconnection circuit power constraints；
Work as GjWhen=0, shows that the interconnection circuit capacity between regional area i and regional area j meets load transfer requirement, that is, do not have
Have out-of-limit, works as GjWhen > 0, represents the interconnection circuit capacity between regional area i and regional area j and be unsatisfactory for a load transfer
It is required that.
8. according to claim 7 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied, special
Sign is:
In step 6, a load transfer vector P being calculated according to step 4T1It carries out turning to supply.
9. according to claim 7 consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied, special
Sign is:
In step 7, it carries out turning to supply according to optimization load transfer strategy, when regional area i failure, if regional area j turns to supply
The interconnection circuit of regional area i is out-of-limit, then the oepration at full load of this route, the load transfer amount of other regional areas as the following formula into
Row optimization:
In formula, Pg,T1The region g load after representing optimized can turn for amount, piFor the load of fault zone i, pbiFor fault zone i's
Directly mount load, rgIndicate the capacity-load ratio of regional area g,Indicate the sum of all areas capacity-load ratio,It represents each
The sum of the capacity-load ratio of out-of-limit route, p are the numbers of out-of-limit route, and N indicates the total number of units of main transformer of main region,Indicate out-of-limit
Line load can undertake limit total amount.
10. according to claim 8 or claim 9 the considerations of regional internet turns the main adapted integration scope of power outage appraisal procedure supplied,
It is characterized by:
In step 8, it is calculate by the following formula and whether needs to cut off load, to assess scope of power outage:
When region, i breaks down or overhauls, the required load got rid of is Δ Pi:
ΔPi=pi-pbi-sum(PT)
Wherein, sum is represented can turn to sum for amount to the load of each regional area, as Δ PiWhen=0, the load of representing fault region i
It can all turn to supply, representative breaks down but do not generate scope of power outage；As Δ PiWhen > 0, represent due to interconnection circuit capacity about
The load of beam, fault zone i also can not all turn to supply by optimization amendment, need to carry out to cut off load behaviour by operator
Make, assesses final scope of power outage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605248.5A CN109858672B (en) | 2018-12-26 | 2018-12-26 | Main distribution integrated power failure range assessment method considering regional interconnection and supply transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605248.5A CN109858672B (en) | 2018-12-26 | 2018-12-26 | Main distribution integrated power failure range assessment method considering regional interconnection and supply transfer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109858672A true CN109858672A (en) | 2019-06-07 |
| CN109858672B CN109858672B (en) | 2022-07-01 |
Family
ID=66892630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811605248.5A Active CN109858672B (en) | 2018-12-26 | 2018-12-26 | Main distribution integrated power failure range assessment method considering regional interconnection and supply transfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109858672B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460049A (en) * | 2019-08-27 | 2019-11-15 | 国网江苏省电力有限公司无锡供电分公司 | Integrated multilayer grade turns the load transfer method for strategy |
| CN110874689A (en) * | 2019-09-24 | 2020-03-10 | 国网天津静海供电有限公司 | Cloud platform-based power failure plan management and control method |
| CN111104770A (en) * | 2019-12-20 | 2020-05-05 | 云南电网有限责任公司信息中心 | Method for rapidly calculating power outage area based on single line diagram topological relation |
| CN111917115A (en) * | 2020-09-11 | 2020-11-10 | 国网江苏省电力有限公司 | Automatic supply transfer scheme compiling method for distribution network self-service power failure plan balance |
| CN112132354A (en) * | 2020-09-28 | 2020-12-25 | 国网江苏省电力有限公司苏州供电分公司 | Urban power grid load advanced transfer method considering network toughness and system thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105205740A (en) * | 2015-10-23 | 2015-12-30 | 国家电网公司 | Power distribution network power supply capacity evaluation method considering effective extension of interconnections of main transformers |
| CN107143968A (en) * | 2017-04-14 | 2017-09-08 | 东南大学 | Peak regulation control method based on air-conditioning polymerization model |
-
2018
- 2018-12-26 CN CN201811605248.5A patent/CN109858672B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105205740A (en) * | 2015-10-23 | 2015-12-30 | 国家电网公司 | Power distribution network power supply capacity evaluation method considering effective extension of interconnections of main transformers |
| CN107143968A (en) * | 2017-04-14 | 2017-09-08 | 东南大学 | Peak regulation control method based on air-conditioning polymerization model |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460049A (en) * | 2019-08-27 | 2019-11-15 | 国网江苏省电力有限公司无锡供电分公司 | Integrated multilayer grade turns the load transfer method for strategy |
| CN110460049B (en) * | 2019-08-27 | 2022-07-22 | 国网江苏省电力有限公司无锡供电分公司 | Load transfer method integrating multi-level transfer strategy |
| CN110874689A (en) * | 2019-09-24 | 2020-03-10 | 国网天津静海供电有限公司 | Cloud platform-based power failure plan management and control method |
| CN111104770A (en) * | 2019-12-20 | 2020-05-05 | 云南电网有限责任公司信息中心 | Method for rapidly calculating power outage area based on single line diagram topological relation |
| CN111104770B (en) * | 2019-12-20 | 2022-06-21 | 云南电网有限责任公司信息中心 | Method for rapidly calculating power outage area based on single line diagram topological relation |
| CN111917115A (en) * | 2020-09-11 | 2020-11-10 | 国网江苏省电力有限公司 | Automatic supply transfer scheme compiling method for distribution network self-service power failure plan balance |
| CN112132354A (en) * | 2020-09-28 | 2020-12-25 | 国网江苏省电力有限公司苏州供电分公司 | Urban power grid load advanced transfer method considering network toughness and system thereof |
| CN112132354B (en) * | 2020-09-28 | 2022-06-28 | 国网江苏省电力有限公司苏州供电分公司 | Urban power grid load advanced transfer method considering network toughness and system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109858672B (en) | 2022-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109858672A (en) | Consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied | |
| Shen et al. | Review of service restoration for distribution networks | |
| CN107730093B (en) | System and method for power grid accident re-routing path | |
| CN102255307B (en) | Layering equivalence method for reliability estimation of distribution network | |
| Liu et al. | The control and analysis of self-healing urban power grid | |
| CN101431238B (en) | Power distribution network power supply capacity evaluation method considering N-1 criterion | |
| CN104931857B (en) | A kind of electrical power distribution network fault location method based on D-S evidence theory | |
| CN102522747B (en) | Calculation method of power supply capability of power distribution system | |
| CN105427039A (en) | Efficient processing method of distribution network repair work orders based on responsibility areas | |
| CN103812131A (en) | Multi-agent-based urban power grid isolated island black-start system and method | |
| CN103020713A (en) | Intelligent substation fault diagnosis method combining topology and relay protection logic | |
| CN112491050A (en) | Main and distribution network accident recovery processing method based on index set weight | |
| CN102570450B (en) | Static reliability assessment method for complex power grid | |
| CN102495850A (en) | Method for splicing multi-stage multi-region interconnected power grid relay protection model | |
| CN102982230A (en) | Short circuit current exceeding auxiliary decision method based on node impedance sensitivity | |
| CN106130189B (en) | Construction site temporary power condition monitoring system and method | |
| CN107069801B (en) | A kind of power distribution network isolated island division methods based on minimum Custom interruption cost | |
| Bian et al. | Service restoration for resilient distribution systems coordinated with damage assessment | |
| CN102749492A (en) | Short-circuit current computing method for ring-shaped ship power grid | |
| CN105205740A (en) | Power distribution network power supply capacity evaluation method considering effective extension of interconnections of main transformers | |
| CN113627766A (en) | Risk identification method for topology identification power failure maintenance plan | |
| CN102280875A (en) | Island division of power network | |
| CN105656036A (en) | Probability static safety analysis method considering flow-and-sensitivity consistency equivalence | |
| CN107134774A (en) | Method and system for analyzing reliability of power distribution network with distributed power supply | |
| Zhang et al. | Outage management of hybrid AC/DC distribution systems: Co-optimize service restoration with repair crew and mobile energy storage system dispatch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |