CN106972485B - A kind of service area's main transformer capacity demand determination method based on substation's load level - Google Patents
A kind of service area's main transformer capacity demand determination method based on substation's load level Download PDFInfo
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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
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- G—PHYSICS
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The invention discloses a kind of service area's main transformer capacity demand determination method based on substation's load level, this method first investigates the operating status of each substation, the substation for including in power supply area, the main transformer quantity for specially including according to the substation, substation's load and separate unit main transformer capacity obtain substation operation state, in conjunction with substation year load growth rate function in power supply area, it obtains the power supply area for capacity-load ratio in value range jointly and whether needs to extend substation or be included in the judgement of planned project warehouse giving quantitative judgement method.
Description
Technical field
The present invention relates to a kind of service area's main transformer capacity demand determination method based on substation's load level.
Background technique
New, enlarging main transformer capacity whether is needed generally to be determined according to the size of capacity-load ratio in power supply area.Capacity-load ratio
Is defined as: it is a certain power supply area, the ratio of transformer equipment total capacity and corresponding total load.According to economic growth and society
The different phase of development, corresponding capacity-load ratio also have certain value range, and it is as shown in the table for range:
Each voltage class becomes capacity-load ratio range of choice
| Load growth situation | It is relatively slow to increase | Medium growth | It is very fast to increase |
| Year load average growth rate | Less than 7% | 7%~12% | Greater than 12% |
| 500kV or more | 1.5~1.8 | 1.6~1.9 | 1.7~2.0 |
| 220kV~330kV | 1.6~1.9 | 1.7~2.0 | 1.8~2.1 |
| 35kV~110kV | 1.8~2.0 | 1.9~2.1 | 2.0~2.2 |
In general, capacity-load ratio is new less than the needs of value range minimum value, extends substation, and it is maximum to be greater than value range
It is worth not needing.But capacity-load ratio is within value range, if needs are new, extend substation or be included in planned project deposit
Library lacks the decision-making foundation according to order of importance and emergency sequence.
Summary of the invention
The object of the present invention is to provide a kind of service area's main transformer capacity demand determination method based on substation's load level,
Whether this method needs to extend substation or be included in planned project deposit for power supply area of the capacity-load ratio in value range
The judgement in library gives quantitative judgement method.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of service area's main transformer capacity demand determination method based on substation's load level, comprising the following steps:
(1), substation's load m is obtainedk, substation is in fortune main transformer configuration quantity nk, separate unit main transformer capacity s in substationi,
Obtain the operating status g (m of substation in service areak,nk),g(mk,nk)=0, the operating status of substation are zero load power transformation
It stands；g(mk,nk)=1, substation operation state are the lighter substation of load；g(mk,nk)=2, substation operation state are load
Moderate substation；g(mk,nk)=3, substation operation state are the heavier substation of load；g(mk,nk)=4, substation operation shape
State is overload substation；
(2), the operating status according to substation in service area, it is following nine that power supply area substation operation state y, which is divided,
Kind situation: overload substation is only contained in y=1, service area；Y=2, service area contain only that whether there is or not Load Substations；Y=3, power supply
Only contain the heavier substation of load in area；The heavier substation of load and the moderate substation of load are only contained in y=4, service area；Y=5,
Service area only contains that load is heavier and the lighter substation of load；Y=6, it is lighter that the heavier substation of load, load are only contained in service area
Substation and the moderate substation of load；The moderate substation of load and the lighter substation of load are only contained in y=7, service area；Y=8,
The moderate substation of load is only contained in service area；The lighter substation of load is only contained in y=9, service area；
(3), power supply area year load growth rate t, year load growth rate function x=f (t), t < 7%, x=1 are obtained；7%
≤ x≤12%, x=2；T > 12%, x=3；
F (x, y)=1, considers enlarging power transmission and transformation project, and F (x, y)=0 does not consider to extend power transmission and transformation project.
Further, substation operation state determine the following steps are included:
1) substation's load m, is obtainedk, substation is in fortune main transformer configuration quantity nk, separate unit main transformer capacity s in substationiIf
Main transformer quantity nk=1, jump to step 2)；If main transformer quantity nk=2, then jump to step 3)；If main transformer quantity nk=3, then it jumps
Go to step 4)；If main transformer quantity nk=4, then jump to step 5), k=1 ..., N1,N1For substation, service area quantity；
If 2), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
In 50%, then determine that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to 50% less than 70%,
Determine the substation for the moderate station of load, g (mk,nk)=2；If load factor is more than or equal to 70% less than 100%, the change is determined
Power station is the heavier station of load, g (mk,nk)=3；If load factor be more than or equal to 100%, determine the substation for traffic overload station,
g(mk,nk)=4；
If 3), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
In the 40% of separate unit minimum main transformer capacity, then determine that the substation gentlier stands for load, g (mk,nk)=1；If load factor be greater than etc.
40% in separate unit minimum main transformer capacity is less than the 100% of separate unit minimum main transformer capacity, then determines that the substation is moderate for load
It stands, g (mk,nk)=2；If load be greater than separate unit main transformer capacity and less than two main transformer capacities and, determine the substation for load
Compared with master station, g (mk,nk)=3；If load factor be greater than two main transformer capacities and, determine the substation for traffic overload station, g (mk,
nk)=4；
If 4), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
In the 40% of two main transformer capacity sums, then determine that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to
100% of the 40% of two main transformer capacity sums less than two main transformer capacity sums then determines the substation for the moderate station of load, g
(mk,nk)=2；If load be greater than two main transformer capacities and and less than three main transformer capacities and, determine the substation for load compared with
Master station, g (mk,nk)=3；If load factor be greater than three main transformer capacities and, determine the substation for traffic overload station, g (mk,
nk)=4；
If 5), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
The 40% of Yu Santai main transformer capacity sum then determines that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to
100% of the 40% of three main transformer capacity sums less than three main transformer capacity sums then determines the substation for the moderate station of load, g
(mk,nk)=2；If load be greater than three main transformer capacities and and less than four main transformer capacities and, determine the substation for load compared with
Master station, g (mk,nk)=3；If load factor be greater than four main transformer capacities and, determine the substation for traffic overload station, g (mk,
nk)=4.
The invention has the advantages that
Whether the present invention needs to extend substation for power supply area of the capacity-load ratio in value range or is included in planning
The judgement of project warehouse gives quantitative judgement method.Avoid previous capacity-load ratio be in value range whether enlarging is pure
Essence the drawbacks of being judged by experience, according to this determination method, can according to the functional value accurate judgement of mathematical function whether need
It is extended.
Specific embodiment
A kind of service area's main transformer capacity demand determination method based on substation's load level, comprising the following steps:
(1), substation's load m is obtainedk, substation is in fortune main transformer configuration quantity nk, separate unit main transformer capacity s in substationi,
Obtain the operating status g (m of substation in service areak,nk),g(mk,nk)=0, the operating status of substation are zero load power transformation
It stands；g(mk,nk)=1, substation operation state are the lighter substation of load；g(mk,nk)=2, substation operation state are load
Moderate substation；g(mk,nk)=3, substation operation state are the heavier substation of load；g(mk,nk)=4, substation operation shape
State is overload substation；
(2), the operating status according to substation in service area, it is following nine that power supply area substation operation state y, which is divided,
Kind situation: overload substation is only contained in y=1, service area；Y=2, service area contain only that whether there is or not Load Substations；Y=3, power supply
Only contain the heavier substation of load in area；The heavier substation of load and the moderate substation of load are only contained in y=4, service area；Y=5,
Service area only contains that load is heavier and the lighter substation of load；Y=6, it is lighter that the heavier substation of load, load are only contained in service area
Substation and the moderate substation of load；The moderate substation of load and the lighter substation of load are only contained in y=7, service area；Y=8,
The moderate substation of load is only contained in service area；The lighter substation of load is only contained in y=9, service area；
(3), power supply area year load growth rate t, year load growth rate function x=f (t), t < 7%, x=1 are obtained；7%
≤ x≤12%, x=2；T > 12%, x=3；
F (x, y)=1, considers enlarging power transmission and transformation project, and F (x, y)=0 does not consider to extend power transmission and transformation project.
Substation operation state determine the following steps are included:
1) substation's load m, is obtainedk, substation is in fortune main transformer configuration quantity nk, separate unit main transformer capacity s in substationiIf
Main transformer quantity nk=1, jump to step 2)；If main transformer quantity nk=2, then jump to step 3)；If main transformer quantity nk=3, then it jumps
Go to step 4)；If main transformer quantity nk=4, then jump to step 5), k=1 ..., N1,N1For substation, service area quantity；
If 2), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
In 50%, then determine that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to 50% less than 70%,
Determine the substation for the moderate station of load, g (mk,nk)=2；If load factor is more than or equal to 70% less than 100%, the change is determined
Power station is the heavier station of load, g (mk,nk)=3；If load factor be more than or equal to 100%, determine the substation for traffic overload station,
g(mk,nk)=4；
If 3), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
In the 40% of separate unit minimum main transformer capacity, then determine that the substation gentlier stands for load, g (mk,nk)=1；If load factor be greater than etc.
40% in separate unit minimum main transformer capacity is less than the 100% of separate unit minimum main transformer capacity, then determines that the substation is moderate for load
It stands, g (mk,nk)=2；If load be greater than separate unit main transformer capacity and less than two main transformer capacities and, determine the substation for load
Compared with master station, g (mk,nk)=3；If load factor be greater than two main transformer capacities and, determine the substation for traffic overload station, g (mk,
nk)=4；
If 4), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
In the 40% of two main transformer capacity sums, then determine that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to
100% of the 40% of two main transformer capacity sums less than two main transformer capacity sums then determines the substation for the moderate station of load, g
(mk,nk)=2；If load be greater than two main transformer capacities and and less than three main transformer capacities and, determine the substation for load compared with
Master station, g (mk,nk)=3；If load factor be greater than three main transformer capacities and, determine the substation for traffic overload station, g (mk,
nk)=4；
If 5), load factor is equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If it is small that load factor is greater than 0
The 40% of Yu Santai main transformer capacity sum then determines that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to
100% of the 40% of three main transformer capacity sums less than three main transformer capacity sums then determines the substation for the moderate station of load, g
(mk,nk)=2；If load be greater than three main transformer capacities and and less than four main transformer capacities and, determine the substation for load compared with
Master station, g (mk,nk)=3；If load factor be greater than four main transformer capacities and, determine the substation for traffic overload station, g (mk,
nk)=4.
Above-mentioned, although specific embodiments of the present invention have been described, not to the limit of the scope of the present invention
System, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art do not need to pay
The various modifications or changes that creative work can be made out are still within protection scope of the present invention.
Claims (1)
1. a kind of service area's main transformer capacity demand determination method based on substation's load level, which is characterized in that including following
Step:
S1, substation's load m is obtainedk, substation is in fortune main transformer configuration quantity nk, separate unit main transformer capacity s in substationi, supplied
Operating status g (the m of substation in electric areak,nk), substation operation state determine the following steps are included:
S11, substation's load m is obtainedk, substation is in fortune main transformer configuration quantity nk, separate unit main transformer capacity s in substationiIf main
Parameter amount nk=1, jump to step S12；If main transformer quantity nk=2, then jump to step S13；If main transformer quantity nk=3, then it jumps
Go to step S14；If main transformer quantity nk=4, then jump to step S15, k=1 ..., N1,N1For substation, service area quantity；
If S12, load factor are equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If load factor is greater than 0 and is less than
50%, then determine that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to 50% less than 70%, sentence
The fixed substation is the moderate station of load, g (mk,nk)=2；If load factor is more than or equal to 70% less than 100%, the power transformation is determined
It stands as the heavier station of load, g (mk,nk)=3；If load factor is more than or equal to 100%, determine the substation for traffic overload station, g
(mk,nk)=4；
If S13, load factor are equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If load factor is greater than 0 and is less than list
The 40% of platform minimum main transformer capacity then determines that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to single
The 40% of platform minimum main transformer capacity is less than the 100% of separate unit minimum main transformer capacity, then determines the substation for the moderate station of load, g
(mk,nk)=2；If load be greater than separate unit main transformer capacity and less than two main transformer capacities and, determine that the substation is heavier for load
It stands, g (mk,nk)=3；If load factor be greater than two main transformer capacities and, determine the substation for traffic overload station, g (mk,nk)
=4；
If S14, load factor are equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If load factor is greater than 0 less than two
The 40% of platform main transformer capacity sum then determines that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to two
100% of the 40% of main transformer capacity sum less than two main transformer capacity sums then determines the substation for the moderate station of load, g (mk,nk)
=2；If load be greater than two main transformer capacities and and less than three main transformer capacities and, determine the substation for the heavier station of load, g
(mk,nk)=3；If load factor be greater than three main transformer capacities and, determine the substation for traffic overload station, g (mk,nk)=4；
If S15, load factor are equal to 0, determine that the substation is zero load station, g (mk,nk)=0；If load factor is greater than 0 less than three
The 40% of platform main transformer capacity sum then determines that the substation gentlier stands for load, g (mk,nk)=1；If load factor is more than or equal to three
100% of the 40% of main transformer capacity sum less than three main transformer capacity sums then determines the substation for the moderate station of load, g (mk,nk)
=2；If load be greater than three main transformer capacities and and less than four main transformer capacities and, determine the substation for the heavier station of load, g
(mk,nk)=3；If load factor be greater than four main transformer capacities and, determine the substation for traffic overload station, g (mk,nk)=4；g
(mk,nk)=0, the operating status of substation are zero load substation；g(mk,nk)=1, substation operation state are that load is lighter
Substation；g(mk,nk)=2, substation operation state are the moderate substation of load；
g(mk,nk)=3, substation operation state are the heavier substation of load；g(mk,nk)=4, substation operation state are overload
Substation；
The operating status of substation, power supply area substation operation state y is divided for following nine kinds of feelings in S2, foundation service area
Shape: overload substation is only contained in y=1, service area；Y=2, service area contain only that whether there is or not Load Substations；Y=3, service area is only
Contain the heavier substation of load；The heavier substation of load and the moderate substation of load are only contained in y=4, service area；Y=5, power supply
Area only contains that load is heavier and the lighter substation of load；The heavier substation of load, the lighter power transformation of load are only contained in y=6, service area
It stands and the moderate substation of load；The moderate substation of load and the lighter substation of load are only contained in y=7, service area；Y=8, power supply
Only contain the moderate substation of load in area；The lighter substation of load is only contained in y=9, service area；
S3, power supply area year load growth rate t, year load growth rate function x=f (t), t < 7%, x=1 are obtained；7%≤x≤
12%, x=2；T > 12%, x=3；
F (x, y)=1, considers enlarging power transmission and transformation project, and F (x, y)=0 does not consider to extend power transmission and transformation project.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622711A (en) * | 2012-03-31 | 2012-08-01 | 天津大学 | Power distribution network planning method based on maximum power supply capacity |
| CN104485662A (en) * | 2014-11-24 | 2015-04-01 | 国家电网公司 | Method of calculating maximum power supply capability of power distribution network during parallel operation of substation |
| CN105046368A (en) * | 2015-08-11 | 2015-11-11 | 国家电网公司 | Method for selecting main substation capacity and optimal station address of transformer substation |
| CN105224993A (en) * | 2014-05-29 | 2016-01-06 | 国家电网公司 | A kind of substation planning method optimized power distribution network and run |
-
2017
- 2017-04-21 CN CN201710264560.1A patent/CN106972485B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622711A (en) * | 2012-03-31 | 2012-08-01 | 天津大学 | Power distribution network planning method based on maximum power supply capacity |
| CN105224993A (en) * | 2014-05-29 | 2016-01-06 | 国家电网公司 | A kind of substation planning method optimized power distribution network and run |
| CN104485662A (en) * | 2014-11-24 | 2015-04-01 | 国家电网公司 | Method of calculating maximum power supply capability of power distribution network during parallel operation of substation |
| CN105046368A (en) * | 2015-08-11 | 2015-11-11 | 国家电网公司 | Method for selecting main substation capacity and optimal station address of transformer substation |
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