CN113555871A - Intelligent main-distribution integrated load transfer method based on pruning algorithm - Google Patents
Intelligent main-distribution integrated load transfer method based on pruning algorithm Download PDFInfo
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- 238000012546 transfer Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000013138 pruning Methods 0.000 title claims abstract description 30
- 230000003993 interaction Effects 0.000 claims description 9
- 230000011664 signaling Effects 0.000 claims description 6
- 238000012163 sequencing technique Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
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- 210000001503 joint Anatomy 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
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- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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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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- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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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
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to an intelligent main distribution integrated load transfer method based on a pruning algorithm, which aims at the problems of quick power restoration in dispatching accident processing and planned power failure mode adjustment, and is characterized in that a load transfer scheme is obtained by calculating based on the pruning algorithm after main distribution splicing, section butt joint and important user splicing are carried out by regulating and controlling a cloud substation 10kV outgoing switch to be matched with a substation 10kV outgoing switch in a d5000 system, the load transfer scheme is obtained, the scheme sorting is carried out according to the fact that the load rate of a new power supply after transfer is minimum, remote control operation is more, whether the important user has power failure risk or not, the load transfer scheme is sorted, and meanwhile, surface display is carried out on a man-machine interface.
Description
Technical Field
The invention belongs to the technical field of power grid dispatching, and particularly relates to an intelligent main-distribution integrated load transfer method based on a pruning algorithm.
Background
The construction of the power distribution automation system has strong practical engineering application significance and value, and the primary significance is the realization of visual scheduling and automatic FA (fault location, fault isolation and power supply recovery). Secondly, the distribution automation system has the function of distribution network automatic voltage control, can realize the distribution network reactive compensation and the automatic optimization control of voltage, and on the premise of ensuring the voltage quality, the distribution automation system reduces the network loss as much as possible, improves the economical efficiency of the operation of the power network, and simultaneously reduces the operation times of the equipment to the maximum extent, reduces the control cost, reduces the accident probability and ensures the safety of the operation of the power network. Finally, the distribution automation system has the function of network reconstruction, when the feeder is overloaded, the load of the overloaded feeder is transferred to other feeders by changing the operation mode of the power grid, so that the load distribution of the power grid is more balanced, the heavy load of the feeder is eliminated, and the load rate and the change of the load rate of each feeder before and after the network reconstruction are counted
At present, when a substation is completely stopped due to incoming line or bus faults in the operation process of a power distribution network, the power distribution network generates large-area power failure, and how to quickly recover loads in a power supply area becomes the primary problem of power distribution network scheduling. The method is characterized in that after faults are quickly isolated by a power distribution automation system, power failure loads are transferred out through a network, the loads are transferred to the opposite side in a conventional method, if the main transformer or line is overloaded after the transfer, the load transfer amount is reduced, and the overload constraint is met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an intelligent main-distribution integrated load transfer method based on a pruning algorithm, can maintain the stable operation of a power grid, can quickly and accurately provide an optimal load transfer scheme, greatly improves the working efficiency of a dispatcher, and ensures the safe and stable operation of the power grid.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
an intelligent main distribution integrated load transfer method based on a pruning algorithm comprises the following steps:
step 1, matching a regulation and control cloud substation 10kV outgoing switch with a d5000 system substation 10kV outgoing switch, and performing main matching and splicing;
step 2, butting the remote measuring and remote signaling sections of the cloud substation;
step 3, splicing the d5000 system with important users;
step 4, calculating load transfer through a pruning algorithm, and obtaining a load transfer scheme;
step 5, sorting the load transfer schemes;
and 6, displaying the sequenced load transfer scheme on a human-computer interaction interface.
Moreover, the specific implementation method of the step 1 is as follows: fuzzy matching and automatic splicing are carried out through the cloud transformer substation, the feeder line name and the switch number, and meanwhile, splicing modification and manual splicing are carried out in cooperation with a human-computer interaction interface.
Moreover, the specific implementation method of the step 2 is as follows: storing the remote measurement and remote signaling sections of the cloud substation in an E file format, sending the sections at regular time through sftp, and setting to receive the information sent once at intervals.
Moreover, the specific implementation method of step 3 is as follows: and setting an Excel table of the important user derived at each interval of time, and matching the scheduling number of the important user with the d5000 system.
Further, the step 4 includes the steps of:
step 4.1, setting power grid operation equipment which is out of operation or has overhigh load and can not be used for recovering the load;
step 4.2, judging whether the power grid operation equipment can carry out load adjustment by reducing output, if so, carrying out step 5, otherwise, carrying out step 4.3;
4.3, searching downstream equipment, judging whether equipment which is out of operation or has an excessively high load exists on the power supply side, if so, performing the step 4.4, otherwise, returning to the step 4.3;
step 4.4, judging whether the pruning condition is met, if the pruning condition is met, carrying out load transfer and step 4.5, otherwise, returning to the step 4.3;
and 4.6, if not, judging whether the load is transferred completely, if so, performing the step 5, otherwise, returning to the step 4.3.
Moreover, the specific implementation method of the step 4.2 is as follows: and searching a downstream bus of the power grid operation equipment, searching a standby power supply according to the downstream bus, recording the operation quantity and the load condition of the new power supply after the new power supply and the standby power supply are turned to, performing load flow calculation and performing step 5 if the new power supply cannot be loaded or cannot be found, and performing step 4.3.
Moreover, the pruning conditions in the step 4.4 comprise:
the method comprises the steps that power failure equipment is not contained in power grid operation equipment which is quitted from operation or downstream equipment of equipment with overhigh load;
and secondly, after each load is supplied, the load rate of the new power supply is recorded, and the load rate does not exceed the first ten.
The single power supply risk and even the power failure risk of important users are not caused in the process of transferring the load and the power supply;
fourthly, recording the number of the operation steps, wherein the number of the operation steps is not more than ten.
Moreover, the sorting method of the step 5 is as follows: and according to the scheme optimal sequencing condition that the load rate of the new power supply is minimum after the power supply is transferred, the number of remote control operations is large, and the power failure risk of important users is small.
Moreover, the specific implementation method of step 6 is as follows: and displaying the old power supply point, the new power supply point, the previous load and the after-conversion load of the load on the man-machine interaction page.
The invention has the advantages and positive effects that:
aiming at the problems of rapid power restoration in dispatching accident processing and adjustment of a planned power failure mode, the load transfer is obtained through the calculation of a pruning algorithm after the adjustment of a cloud substation 10kV outgoing switch is matched with a d5000 system substation 10kV outgoing switch, main distribution splicing, section butt joint and important user splicing are carried out, a load transfer scheme is obtained, the load transfer scheme is sequenced according to regulations, and meanwhile, surface display is carried out on a man-machine interface.
Drawings
FIG. 1 is a flow chart of calculating load forwarding through a pruning algorithm and obtaining the load forwarding according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
An intelligent main distribution integrated load transfer method based on a pruning algorithm comprises the following steps:
step 1, matching a regulation and control cloud substation 10kV outgoing switch with a d5000 system substation 10kV outgoing switch, and performing main matching and splicing. Fuzzy matching and automatic splicing are carried out through the cloud transformer substation, the feeder line name and the switch number, and meanwhile, splicing modification and manual splicing are carried out in cooperation with a human-computer interaction interface.
And 2, butting the remote measuring and remote signaling sections of the cloud substation. Storing the remote measurement and remote signaling sections of the cloud substation in an E file format, sending the sections at regular time through sftp, and setting to receive the sent information once every 5 minutes.
And 3, splicing the d5000 system with important users. And setting an Excel table of the important user derived at each interval of time, and matching the scheduling number of the important user with the d5000 system.
And 4, calculating load transfer through a pruning algorithm and obtaining a load transfer scheme as shown in the figure 1.
And 4.1, setting the grid operation equipment which is out of operation or has too high load and cannot be used for recovering the load.
And 4.2, judging whether the power grid operation equipment can carry out load adjustment by reducing the output power, if so, carrying out the step 5, otherwise, carrying out the step 4.3.
The specific implementation method of the step is as follows: and searching a downstream bus of the power grid operation equipment, searching a standby power supply according to the downstream bus, recording the operation quantity and the load condition of the new power supply after the new power supply and the standby power supply are turned to, performing load flow calculation and performing step 5 if the new power supply cannot be loaded or cannot be found, and performing step 4.3.
And 4.3, searching for downstream equipment, judging whether equipment which is out of operation or has an excessively high load exists on the power supply side, if so, performing the step 4.4, otherwise, returning to the step 4.3.
And meanwhile, if the downstream equipment cannot be found until the last time, finding a contact switch of the 10kV outgoing line, and finding another power supply of the contact switch after finding the contact switch. The load is diverted to a new power source. And recording the number of operations and the load condition of the new power supply after the new power supply is turned. Recording whether important users are in the system to cause the risk of power failure or single power supply.
And 4.4, judging whether the pruning condition is met, if so, carrying out load transfer and the step 4.5, otherwise, returning to the step 4.3.
The pruning conditions include:
the method comprises the steps that power failure equipment is not contained in power grid operation equipment which is quitted from operation or downstream equipment of equipment with overhigh load;
and secondly, after each load is supplied, the load rate of the new power supply is recorded, and the load rate does not exceed the first ten.
The single power supply risk and even the power failure risk of important users are not caused in the process of transferring the load and the power supply;
fourthly, recording the number of the operation steps, wherein the number of the operation steps is not more than ten.
And 4.6, if not, judging whether the load is transferred completely, if so, performing the step 5, otherwise, returning to the step 4.3.
And 5, sequencing the load transfer schemes. The sequencing method comprises the following steps: and according to the scheme optimal sequencing condition that the load rate of the new power supply is minimum after the power supply is transferred, the number of remote control operations is large, and the power failure risk of important users is small.
And 6, displaying the sequenced load transfer scheme on a human-computer interaction interface. And displaying the old power supply point, the new power supply point, the previous load and the after-conversion load of the load on the man-machine interaction page. Meanwhile, the operation order is generated by one key, so that the operation order is very convenient.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (9)
1. An intelligent main-matching integrated load transfer method based on a pruning algorithm is characterized in that: the method comprises the following steps:
step 1, matching a regulation and control cloud substation 10kV outgoing switch with a d5000 system substation 10kV outgoing switch, and performing main matching and splicing;
step 2, butting the remote measuring and remote signaling sections of the cloud substation;
step 3, splicing the d5000 system with important users;
step 4, calculating load transfer through a pruning algorithm, and obtaining a load transfer scheme;
step 5, sorting the load transfer schemes;
and 6, displaying the sequenced load transfer scheme on a human-computer interaction interface.
2. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 1, wherein the load transfer method comprises the following steps: the specific implementation method of the step 1 comprises the following steps: fuzzy matching and automatic splicing are carried out through the cloud transformer substation, the feeder line name and the switch number, and meanwhile, splicing modification and manual splicing are carried out in cooperation with a human-computer interaction interface.
3. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 1, wherein the load transfer method comprises the following steps: the specific implementation method of the step 2 comprises the following steps: storing the remote measurement and remote signaling sections of the cloud substation in an E file format, sending the sections at regular time through sftp, and setting to receive the information sent once at intervals.
4. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 1, wherein the load transfer method comprises the following steps: the specific implementation method of the step 3 is as follows: and setting an Excel table of the important user derived at each interval of time, and matching the scheduling number of the important user with the d5000 system.
5. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 1, wherein the load transfer method comprises the following steps: the step 4 comprises the following steps:
step 4.1, setting power grid operation equipment which is out of operation or has overhigh load and can not be used for recovering the load;
step 4.2, judging whether the power grid operation equipment can carry out load adjustment by reducing output, if so, carrying out step 5, otherwise, carrying out step 4.3;
4.3, searching downstream equipment, judging whether equipment which is out of operation or has an excessively high load exists on the power supply side, if so, performing the step 4.4, otherwise, returning to the step 4.3;
step 4.4, judging whether the pruning condition is met, if the pruning condition is met, carrying out load transfer and step 4.5, otherwise, returning to the step 4.3;
and 4.6, if not, judging whether the load is transferred completely, if so, performing the step 5, otherwise, returning to the step 4.3.
6. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 5, wherein the load transfer method comprises the following steps: the specific implementation method of the step 4.2 is as follows: and searching a downstream bus of the power grid operation equipment, searching a standby power supply according to the downstream bus, recording the operation quantity and the load condition of the new power supply after the new power supply and the standby power supply are turned to, performing load flow calculation and performing step 5 if the new power supply cannot be loaded or cannot be found, and performing step 4.3.
7. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 5, wherein the load transfer method comprises the following steps: the pruning conditions in the step 4.4 comprise:
the method comprises the steps that power failure equipment is not contained in power grid operation equipment which is quitted from operation or downstream equipment of equipment with overhigh load;
and secondly, after each load is supplied, the load rate of the new power supply is recorded, and the load rate does not exceed the first ten.
The single power supply risk and even the power failure risk of important users are not caused in the process of transferring the load and the power supply;
fourthly, recording the number of the operation steps, wherein the number of the operation steps is not more than ten.
8. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 1, wherein the load transfer method comprises the following steps: the sorting method of the step 5 comprises the following steps: and according to the scheme optimal sequencing condition that the load rate of the new power supply is minimum after the power supply is transferred, the number of remote control operations is large, and the power failure risk of important users is small.
9. The intelligent main-matching-body load transfer method based on the pruning algorithm according to claim 1, wherein the load transfer method comprises the following steps: the specific implementation method of the step 6 comprises the following steps: and displaying the old power supply point, the new power supply point, the previous load and the after-conversion load of the load on the man-machine interaction page.
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