CN105071395B - High voltage distribution network load transfer method based on supply path Boolean Search - Google Patents
High voltage distribution network load transfer method based on supply path Boolean Search Download PDFInfo
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- CN105071395B CN105071395B CN201510451186.7A CN201510451186A CN105071395B CN 105071395 B CN105071395 B CN 105071395B CN 201510451186 A CN201510451186 A CN 201510451186A CN 105071395 B CN105071395 B CN 105071395B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
Abstract
The invention discloses the high voltage distribution network load transfer method based on supply path Boolean Search, which comprises the following steps：Obtain the topological diagram of current power distribution network；Judge that the power supply point in current power distribution network whether there is traffic overload：The direction constraint set, mutual exclusion constraint set and the sequence constraint collection that are formed by all power supply point closed loop paths are obtained by deep search；Need to be while meeting the direction constraint set on the closed loop path, mutual exclusion constraint set and sequence constraint collection during load transfer operation to turning to carry out for the power supply point of traffic overload on path；Judging, the power supply point of traffic overload is turning whether load transfer to be completed in for number of operations in advance：If not completing load transfer target, load off-load operation is carried out to the power supply point of traffic overload.Load transfer can be carried out automatically using this method, it is not necessary to which dispatcher continually carries out load transfer by rule of thumb.
Description
Technical field
The present invention relates to the scheduling controlling of field of distribution network, and in particular to a kind of high pressure based on supply path Boolean Search
Distribution network load turns to supply method.
Background technology
As Urbanization in China is accelerated, with resident, financial industry and commerce, service trade, the high-end cities and towns for being fabricated to representative
Load developed recently is swift and violent.However, due to passage restriction, many reasons, the high pressure such as drop point is not enough, the duration is delayed, construction is obstructed
Distribution network construction is difficult to ensure the appropriate advance to city load growth in each local.Meet peak or visual plant maintenance,
During technological transformation, the operation risk that off-capacity or load inequality are caused progressively manifests.
In addition power transmission network section temporarily surely with hot steady limit caused by 220kV network congestions, the higher city of power density exists
Peak period has to take frequently, and even large area turns for operation, to extend electrical network actual support ability.This is to scheduling
Personnel bring huge workload, due to lacking the calculation analysis tools for high voltage distribution network feature, dispatcher at present
The strategy that accumulative operating experience or examination gather that is all based on working when being scheduled all the year round is scheduled, and is difficult to when causing scheduling
The more complete set of feasible solution of search and prioritization scheme, in some instances it may even be possible to bring potential risk because trend significantly changes.
Content of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of can automatically and accurately by the overload of power supply point
The high voltage distribution network load transfer method based on supply path Boolean Search that load is reprinted away.
For above-mentioned deficiency of the prior art, the technical solution used in the present invention is：
A kind of high voltage distribution network load transfer method based on supply path Boolean Search is provided, which comprises the following steps：
Obtain topological structure and the trip information of current power distribution network；
Judge that the power supply point in current power distribution network whether there is traffic overload：
If existing, the direction constraint set formed by all power supply point closed loop paths, mutual exclusion constraint are obtained by deep search
Collection and sequence constraint collection；
Using electricity of the closed loop path to traffic overload for meeting direction constraint set, mutual exclusion constraint set and sequence constraint collection simultaneously
Source point carries out load transfer operation；
Judging, the power supply point of traffic overload is turning whether load transfer to be completed in for number of operations in advance：
If not completing load transfer, load off-load operation is carried out to the power supply point of traffic overload.
Beneficial effects of the present invention are：By topology and the trip information of Real-time Collection power distribution network, when there is power supply
During the situation of point load overload, the closed loop path for meeting requirement by searching for each power supply point carries out turning to supply, and makes each power supply point
Load be less than its specified loading load, using this method can automatically, eliminate exactly by load transfer negative in power distribution network
The situation of lotus overload, it is not necessary to which dispatcher continually carries out load transfer operation by rule of thumb.
After the overload load of power distribution network is reprinted away, the load loaded on some power supply points is too high, some loadings
Again than relatively low, if being adjusted to loading the higher power supply point of load not in time, at the next moment, the higher electricity of load is loaded
Transshipping very likely occurs in source point, and then the power supply point of overload carries out turning for after, and this method is also by the whole distribution of adjustment
The load of network source point, makes the load balancing of each power supply point.
During load transfer and load balancing, the method is able to record that the number of times of this scheduling operation（Adjust when turning to supply
The number of times of whole power supply point）With the sequencing of each power supply point scheduling operation, turned with facilitating dispatcher to get information about load
For concrete operations situation.
Description of the drawings
Fig. 1 is the flow chart of the high voltage distribution network load transfer method based on supply path Boolean Search.
Fig. 2 is the topological diagram structural representation of the high pressure with power distribution network of one embodiment of the invention.
Fig. 3 illustrates for the high voltage distribution network Basic Topological of another embodiment of the present invention.
Specific embodiment
Below the specific embodiment of the present invention is described, and this is understood in order to those skilled in the art
Bright, it should be apparent that the invention is not restricted to the scope of specific embodiment, for those skilled in the art,
As long as in appended claim restriction and the spirit and scope of the present invention for determining, these changes are aobvious and easy to various change
See, all utilize the innovation and creation of present inventive concept in the row of protection.
With reference to Fig. 1, Fig. 1 shows the flow process of the high voltage distribution network load transfer method based on supply path Boolean Search
Figure, as shown in figure 1, the method is comprised the following steps：
Obtain the topological structure of current power distribution network（May be referred to Fig. 2）And trip information；Due to being carried in power distribution network
In load on each power supply point each moment can there is certain change, break down to evade power supply point, it is ensured that electricity
The normal operation of source point, needs the topological diagram for paying close attention to high voltage distribution network at any time, once find that the power supply point of traffic overload is accomplished by
Timely load transfer is gone out；And topological structure and the trip information of power distribution network is had to rely on when load reprints
The loading condition of power supply point is grasped in real time could.
Judge that the power supply point in current power distribution network whether there is traffic overload：
If existing, the direction constraint set formed by all power supply point closed loop paths, mutual exclusion constraint are obtained by deep search
Collection and sequence constraint collection；Power supply point when load transfer is carried out, can be gone out by not every supply path by load transfer,
Then needed to search out the closed loop path that smoothly load transfer can be gone out before load transfer is carried out.
In one embodiment of the invention, the concrete acquisition methods of said sequence constraint set are：
Power supply point in current power distribution network carries out deep search, obtains the distribution capacity unit of the main confession of power supply point；With reference to
Fig. 3, illustrates the transformer station that the A stations that comes, B stations, C stations and D stand as 220KV in figure, these transformer stations are exactly the electricity that this method is mentioned
Source point,（S1,1）、（S1,2）、（S2,1）、（S2,2）, (S3,1),（S3,2）, (S4,1) and（S4,2）It is matching somebody with somebody in power distribution network
Capacitance unit（Distribution capacity unit is the combination of transformator and its institute's on-load in 110 kV transformer stations）, and S1 is A station owners
For 110kV transformer stations, S4 be B station owners supply 110kV transformer stations, S3 be C station owners supply 110kV transformer stations.
The confession circuit of distribution capacity unit all power supply points in power distribution network of the main confession of power supply point is obtained by deep search
Footpath；Fig. 3 is referred again to, with the distribution capacity unit that A station owners supply（S2,2）As a example by its supply path is illustrated, wherein,
（S2,2）→（S2,1）→（S1,2）→（S1,1）→A、（S2,2）→（S2,1）→（S1,2）→B、（S2,2）→（S4,1）→
（S4,3）→（S4,1）→B、（S2,2）→（S3,1）→C、（S2,2）→（S2,1）→（S1,2）→（S1,1）→C 、（S2,2）
→（S3,1）→（S3,2）→ D supplies distribution capacity unit with regard to based on（S2,2）To all power supply points supply path, 6 altogether.
Merge distribution capacity unit to the supply path of any two power supply point, form closed loop path；Still with main confession in Fig. 3
Distribution capacity unit（S2,2）As a example by closed loop path is illustrated, to distribution capacity unit（S2,2）Arrive any two power supply
Point A, B station supply path merge after formed closed loop path be：A stations → (S1,1) → (S1,2) → (S2,1) →TS2,2) → B stations, A stations →（S1,1）→ (S1,2) → (S2,1) → (S2,2) → (S4,1) → (S4,3) → B stations.
Order constrained condition principle is based on, the closed loop path for meeting order constrained condition is stored and is concentrated to sequence constraint；
Wherein, order constrained condition is：Be located at same closed loop path on distribution capacity unit to power supply point carry out load transfer when, neighbouring
The distribution capacity unit of target power point load transfer operation should prior to its rear end away from target power point distribution capacity list
Unit.
Right by taking the closed loop path C station → S3 of the distribution capacitance cell S 3 of the main confession of the power supply point in Fig. 3 → D stations as an example below
Order constrained condition is further illustrated, when in S3（S3,1）Need to D stations carry out load transfer when, it is necessary in S3（S3,2）
While turning to supply to D stations in S3（S3,1）Load transfer could be carried out to D stations.
In another embodiment of the present invention, the concrete acquisition methods of above-mentioned direction constraint set are：
Direction constraints principle is based on, during the closed loop path for meeting direction constraint is stored to direction constraint set；Wherein,
Direction constraints is：When having two and above load transfer direction is available, which is only capable of same distribution capacity unit
One is selected to turn to supply path.In particular：Distribution capacity unit can not turn to supply to two or more power supply points simultaneously.
The acquisition methods of mutual exclusion constraint set are：According to the closed loop path of power supply point, each power supply in current power distribution network is obtained
Put and have the power supply point of communication relationship with which；With reference to Fig. 2, by taking B stations as an example, the power supply point that has communication relationship with which have A stations, C stations,
D stations and E stand.
Whether the power supply point for judging power supply point and having communication relationship with which has identical distribution capacity unit, specifically
Stand with A station → a5 → a6 → b4 → b3 → B for, B station → b3 → b4 → a6 → a5 → A stations, this two closed loop paths all have by
The distribution capacity unit of b3, b4, a6, a5 composition, and a6 and b4 are the most two neighboring distribution capacities connected by available path
Unit.
If having, based on mutual exclusion constraints, by with identical closed loop path by available path connect most adjacent
Two distribution capacity units store to mutual exclusion constraint set.
Wherein, mutual exclusion constraints is：There are most adjacent two connected by available path on identical closed loop path
When distribution capacity unit carries out load transfer, it is impossible to while carrying out turning to supply to the both direction of the closed loop path；Namely when negative
Lotus turn for be from B station → b4 → A stand when, must not occur load transfer stand for A station → a6 → B or load transfer be stand from A →
When a6 → B stands, must not there is load transfer for B station → b4 → A stations.
Main confession path mentioned above is that distribution capacity unit obtains electric energy from power supply point or other distribution capacity units
Two solid-line paths of A stations → a5 in supply path, such as Fig. 2, a5 → a6.
Backup path is that distribution capacity unit is possible to obtain electric energy from other power supply points or other distribution capacity units
Supply path, but current and do not obtain electric energy through which, A stations → a5 in such as Fig. 2, two dashed paths of a5 → a6.
Using electricity of the closed loop path to traffic overload for meeting direction constraint set, mutual exclusion constraint set and sequence constraint collection simultaneously
Source point carries out load transfer operation；Turning for being adopted when load transfer is carried out must be while be present in direction about for path
The closed loop path that constriction, mutual exclusion constraint set and sequence constraint are concentrated.
Judge that the power supply point of traffic overload turns to supply number of operations in advance（Turning in advance can be according to scheduling people for number of operations
Member is set in the number of times that scheduling process before often carries out turning to supply）Whether inside load transfer is completed：
When power supply point completes load transfer, or power supply point does not complete load transfer（Repeatedly turned by the method
For operation, the load loaded on the power supply point still overloads）, load off-load operation is carried out to the power supply point of traffic overload（Protecting
In the case that card power supply point runs well, then the load by force to loading thereon is needed to close）Afterwards, distribution is just completed
The power supply point load transfer of net.
After the completion of the power supply point load transfer operation of power distribution network, although the load of each power supply point may not have overload
Situation, but the load loaded on some power supply points may very high have then very low, for the very high power supply of load of loading
Point easily may occur as soon as the phenomenon of overload in loading load somewhat change conditions thereon, in order to evade this phenomenon,
After carrying out load transfer and completing, in addition it is also necessary to carry out equilibrium to the load loaded on power supply point.
This method also includes judging the load of all power supply points in current power distribution network whether equalization step：
If unbalanced, using while meeting the closed loop path of direction constraint set, mutual exclusion constraint set and sequence constraint collection to negative
The unbalanced power supply point of lotus carries out load transfer operation, the load balancing of all power supply points up in current power distribution network.
In one embodiment of the invention, during load transfer and load balancing, directly perceived for convenience of dispatcher
Understanding load transfer concrete operations situation, after the load balancing of all power supply points in current power distribution network, in addition it is also necessary to record
Power supply point is from the load transfer number of operations existed during traffic overload to all power supply point load balancings in power distribution network and negative
Lotus transfers the operation order of power supply point when turning to supply.
In sum, load transfer can be carried out to the power supply point of traffic overload automatically using this method, it is not necessary to dispatch
Personnel continually carry out load transfer by rule of thumb.
Claims (7)
1. the high voltage distribution network load transfer method based on supply path Boolean Search, it is characterised in that comprise the following steps：
Obtain topological structure and the trip information of current power distribution network；
Judge that the power supply point in current power distribution network whether there is traffic overload：
If exist, by deep search obtain formed by all power supply point closed loop paths direction constraint set, mutual exclusion constraint set and
Sequence constraint collection；
Using power supply point of the closed loop path to traffic overload for meeting direction constraint set, mutual exclusion constraint set and sequence constraint collection simultaneously
Carry out load transfer operation；
Judging, the power supply point of traffic overload is turning whether load transfer to be completed in for number of operations in advance：
If not completing load transfer, load off-load operation is carried out to the power supply point of traffic overload.
2. high voltage distribution network load transfer method according to claim 1, it is characterised in that also include：When load is completed
Turn for or the power supply point of traffic overload carried out all power supplys judged in current power distribution network are entered after load off-load operation
Whether the load of point is balanced；
If unbalanced, using meeting the closed loop path of direction constraint set, mutual exclusion constraint set and sequence constraint collection to load not simultaneously
Power supply point carries out load transfer operation in a balanced way, the load balancing of all power supply points up in current power distribution network.
3. high voltage distribution network load transfer method according to claim 2, it is characterised in that also include：
After the load balancing of all power supply points in current power distribution network, recording power point from traffic overload to power distribution network in all electricity
The operation order of power supply point is transferred during load transfer number of operations and load transfer during source point load balancing.
4. according to the arbitrary described high voltage distribution network load transfer method of claim 1-3, it is characterised in that the sequence constraint
The acquisition methods of collection are：
Power supply point in current power distribution network carries out deep search, obtains the distribution capacity unit of the main confession of power supply point；
The supply path of distribution capacity unit all power supply points in power distribution network of the main confession of power supply point is obtained by deep search；
Merge distribution capacity unit to the supply path of any two power supply point, form closed loop path；
Order constrained condition principle is based on, the closed loop path for meeting order constrained condition is stored and is concentrated to sequence constraint；
Wherein, order constrained condition is：The distribution capacity unit being located on same closed loop path carries out load transfer to power supply point
When, the distribution capacity unit of adjacent objects power supply point load transfer operation should prior to its rear end away from target power point distribution
Capacity cell.
5. high voltage distribution network load transfer method according to claim 4, it is characterised in that the direction constraint set is obtained
The method of taking is：
Direction constraints principle is based on, during the closed loop path for meeting direction constraint is stored to direction constraint set；Wherein, direction
Constraints is：When having two and above load transfer direction is available, which is only capable of selecting same distribution capacity unit
One turns to supply path.
6. high voltage distribution network load transfer method according to claim 4, it is characterised in that the mutual exclusion constraint set is obtained
The method of taking is：
According to the closed loop path of power supply point, obtain in current power distribution network each power supply point and have the power supply point of communication relationship with which；
Whether the power supply point for judging power supply point and having communication relationship with which has identical distribution capacity unit：
If having, by with the most adjacent two distribution capacity unit storage connected by available path on identical closed loop path
Into mutual exclusion constraint set；
Wherein, mutual exclusion constraints is：There is most adjacent two distribution connected by available path on identical closed loop path
When capacity cell carries out load transfer, it is impossible to while carrying out turning to supply to the both direction of the closed loop path.
7. the high voltage distribution network load transfer method according to claim 5 or 6, it is characterised in that the power supply point is
220kV transformer stations, distribution capacity unit are the combination of transformator and its institute's on-load in 110 kV transformer stations.
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| CN106684898B (en) * | 2016-10-31 | 2019-07-05 | 国电南瑞科技股份有限公司 | A kind of energy-storage system method for optimizing scheduling based on value network |
| CN106505564B (en) * | 2016-12-02 | 2018-12-14 | 中国农业大学 | A kind of medium voltage distribution network based on the anti-band of bus turns for method |
| CN106505576B (en) * | 2016-12-09 | 2019-03-12 | 西南石油大学 | It is a kind of based on Link-path urban high voltage distribution network load turn for method |
| CN112491090B (en) * | 2020-10-19 | 2023-05-26 | 内蒙古电力（集团）有限责任公司内蒙古电力经济技术研究院分公司 | Power electronic transformer port configuration optimization method considering transfer path optimization |
| CN113162101B (en) * | 2021-04-02 | 2022-10-28 | 华中科技大学 | Alternating current-direct current receiving end power grid optimization planning method and system containing mutual exclusion constraint |
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| CN102270853B (en) * | 2011-07-29 | 2013-06-19 | 中国船舶重工集团公司第七一一研究所 | Control method for transferring load by power transformer in ship power system and control device thereof |
| CN102290811B (en) * | 2011-08-10 | 2014-06-25 | 上海市电力公司 | Method for evaluating accident prearranged plan and running way |
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| CN103401233B (en) * | 2013-07-17 | 2015-09-30 | 天津大学 | A kind of contact of the power distribution network based on net capability sort order optimization method |
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