CN105790264A - Electric power grid supplying method - Google Patents
Electric power grid supplying method Download PDFInfo
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- CN105790264A CN105790264A CN201610247178.5A CN201610247178A CN105790264A CN 105790264 A CN105790264 A CN 105790264A CN 201610247178 A CN201610247178 A CN 201610247178A CN 105790264 A CN105790264 A CN 105790264A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004364 calculation method Methods 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 abstract description 50
- 238000012546 transfer Methods 0.000 abstract description 16
- 238000012806 monitoring device Methods 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000739 chaotic effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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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
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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- H02J13/0017—
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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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- 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
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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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)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses an electric power grid supplying method. An electric power grid supplying system comprises a transfer load calculating module, a transfer power supply searching module, an on-line monitoring module, an individual transfer power supply determination module, a load sharing and transferring operation scheme generation module. A transfer load list generating module searches all loads at the all sections at the downstream of power-failure or maintaining switch equipment, calculates transfer load total value according to the searched loads and generates a transfer load list. The transfer power supply searching module traverses each section from the downstream section of the power-failure or maintaining switch, crosses interconnection switches to search power supplies on the other side, if the interconnection switches are in a section, and sequentially search all power supplies. The on-line monitoring module comprises a state monitoring substation and an on-line monitoring device. The method combines heuristic rules with a topoligical tree, and less calculation is required for calculating the number of interconnection switches for large-area power failure and conducting load transfer through sectional switch operation.
Description
Technical field
The present invention relates to Power System and its Automation and intelligent distribution network technical field, particularly to electric power network supply method.
Background technology
System for distribution network of power includes substantial amounts of switch, is broadly divided into interconnection switch and block switch.(ground connection, broken string and equipment overload is included) and during apparatus of load obvious unbalanced after power distribution network breaks down, line fault can be excised by the folding condition of adjustment network switching, isolated fault also shifts fault zone of influence internal loading, to reduce fault incidence, or abatement apparatus overload, and apparatus of load is unbalanced, thus totally improving economy and the safety of operation of power networks.
Supply load transfer after distribution network failure is a multiobject optimization problem, after grid collapses, run operator to be desirable to quickly provide fault isolation schemes and load transfer scheme, the rapidity solved not only is claimed by this, also require gratifying load transfer result, the target of fault afterload transfer is usually recovers dead electricity region internal loading (including important load and insignificant load etc.) with as far as possible more, simultaneously it is contemplated that network loss, switching manipulation number of times, the index such as power-balance.
At present, the widely used method of Utilities Electric Co. is substantially based on empirical approach and provides corresponding operation scheme, therefore, it is impossible to be operated the selection of scheme optimality and make maximum load be shifted, and power failure range is minimum；When there being multiple place that overload occurs, and during fault outage, it is impossible to realize load transfer in phase；Heavily enough schemes that cannot rationally provide realize the equilibrium of apparatus of load.The scheme that simultaneously current empirical approach provides often requires that traffic control personnel have good experience, and system equipment has very deep understanding and grasp, thus traffic control personnel are added very big operating pressure.
Summary of the invention
Goal of the invention: the invention aims to solve deficiency of the prior art, one is provided to utilize heuristic rule and topological tree to combine, need not using substantial amounts of calculating, just can quickly provide large-area power-cuts fault need to by multiple interconnection switches, the electric power network feed system of the problem of block switch transition of operation load and supply method.
Technical scheme: a kind of electric power network feed system of the present invention, including turn for load calculation module, turn power supply source search module, on-line monitoring module, independently turn power supply source judge module, load is shared to turn and is supplied operation scheme generation module；
Turn for load List Generating Module for searching for power failure or the load be with of all sections of inspection switch device downstream, obtain turning for load total value and producing to turn for load list according to the carry calculation searched；
Turn power supply source search module from having a power failure or inspection switch downstream section, traveling through each section successively, if there is interconnection switch in section, striding across interconnection switch and outwards searching for opposite side power supply, sequentially find and all turn power supply source；
On-line monitoring module includes status monitoring substation and on-Line Monitor Device；
Status monitoring substation is used for receiving equipment account information, and after generating, according to described equipment account information, the SCD expansion templates file meeting SCD expansion templates form, sends described SCD expansion templates file to described on-Line Monitor Device；Status monitoring substation is additionally operable to the SCD expansion templates integrating documents after described on-Line Monitor Device is filled intact device relevant information and generates the SCD file at whole station；
On-Line Monitor Device is for the call format according to described SCD expansion templates file, and the configuration according to on-Line Monitor Device describes ICD file, the device relevant information in described SCD expansion templates file is filled complete；
Independently turn power supply source judge module for comparing turning with the residual capacity turning each power supply that power supply source search module finds for load total value for turning of load List Generating Module generation, compare turn for load List Generating Module produce turn for load total value less than the residual capacity of the power supply currently compared time, using the power supply currently compared as can independently turn power supply source, and the information that can independently turn power supply source is supplied to dispatcher；Compare turn for load List Generating Module produce when turning for load total value more than the residual capacity of each power supply, order that what output was preset share is shared to load and is turned for operation scheme generation module；
Load is shared and is turned for operation scheme generation module for and for turning of producing of load List Generating Module turning the residual capacity of the power supply that power supply source search module finds carry out amortization ratio calculating for load total value according to turning, and obtains the amortization ratio value of each power supply；When judging to disclosure satisfy that according to the amortization ratio value of power supply the load value turned in confession load list requires, produce load and share a turn confession operation scheme information, and share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load.
Further, the active load mode turning each section in power supply source search module record searching route is basic tree construction, and section, as the node of tree, has a power failure or inspection switch downstream section is the root node set.
Further, independently turn power supply source judge module compare turn for load List Generating Module produce turn for load total value less than the residual capacity of the power supply currently compared time, the power supply of the residual capacity being not less than the power supply currently compared is obtained from each section turning power supply source search module record, using the power supply of acquisition as independently turning power supply source, and according to descending order, the information that respectively can independently turn power supply source is supplied to dispatcher.
Further, during distribution network failure, load transfer system also includes load shedding execution module, turn power supply source search module and also record the active load of each section in searching route, load shares turn confession operation scheme generation module when judging the requirement that can not meet the load value searched according to the amortization ratio value of power supply, and the load shedding order that output is preset performs module to load shedding；Load shedding performs module and is used for responding load shedding order, the assigned priority of the active load according to record, the active load that each power supply chosen is with is cut down, and finally produces load for an operation scheme generation module and shares so that load is shared to turn and turn for an operation scheme information.
Further, load share turn for operation scheme generation module include power supply select unit, amortization ratio computing unit, share turn for operation scheme generation unit power supply select unit, start to select for the power supply maximum from residual capacity, and be overlapped obtaining superposition value by the residual capacity of the power supply selected, when superposition value is not less than and turns for load total value, stop selecting, and the power supply selected is supplied to amortization ratio computing unit；
Amortization ratio computing unit, for carrying out amortization ratio calculating according to the residual capacity turning the power supply selecting unit to provide for load total value and power supply, and obtains the amortization ratio value of the power supply of greatest residual capacity in each section；
Share and turn for operation scheme generation unit, for when judging the requirement that disclosure satisfy that the load value searched according to the amortization ratio value of power supply, produce load and share and turn for operation scheme information；When judging can not meet the requirement turned for the load value in load list searched according to the amortization ratio value of power supply, the load shedding order that output is preset performs module to load shedding.
Further, described powernet monitoring system also includes: production management system and status monitoring main website；Production management system is for generating equipment account information according to IEC61968 standard, and equipment account model is supplied to described status monitoring main website；Status monitoring main website is for being sent to described status monitoring substation by described equipment account information by ftp；Described status monitoring substation includes:
Signal dispatcher module, for the information between reiving/transmitting state monitoring sub-station and status monitoring main website, on-Line Monitor Device；Including: receive the equipment account information issued by status monitoring main website；Start 61850 clients to be connected with on-Line Monitor Device foundation, and send described SCD expansion templates file by IEC61850 file service；Receive the SCD expansion templates file after the filling intact device relevant information of on-Line Monitor Device feedback；Document processing module, generates, for the equipment account information received according to described signal dispatcher module, the SCD expansion templates file meeting SCD expansion templates form；And the described on-Line Monitor Device that described signal dispatcher module received fill intact device relevant information after SCD expansion templates integrating documents generate the SCD file at whole station.
Further, the call format of described SCD expansion templates file is:
The attribute of the monitoring location LNode node being pointed under Substation class node increases extended attribute ext:DOIDesc for storing the extended description describing the data object extracted ICD from configuration, is used for representing that the monitoring location that this monitoring location is corresponding describes information and business datum；
The unique identity property of extended attribute ext:mRID, the asset identification mRID of this attribute and equipment account information model equipment are increased for all nodes under Substaion node；
Intelligent electronic device IED node increases extended attribute ext:mRID, i.e. the asset identification mRID of equipment in equipment account information model, it is necessary to fills in the Asset ID of secondary device in corresponding assets reduced model, is used for carrying out secondary device association.
The invention also discloses the supply method of a kind of electric power network, comprise the following steps:
The load that search has a power failure or all sections of inspection switch device downstream are with, obtains turning for load total value and producing to turn for load list according to the carry calculation searched；
From having a power failure or inspection switch downstream section, traveling through each section successively, if there is interconnection switch in section, striding across interconnection switch and outwards searching for opposite side power supply, sequentially find and all turn power supply source；
The residual capacity for load total value with each power supply found that turns produced is compared, compare generation turn for load total value less than the residual capacity of the power supply currently compared time, using the power supply currently compared as can independently turn power supply source, and the information that can independently turn power supply source is supplied to dispatcher；
Comparing when turning for load total value more than the residual capacity of each power supply of generation, carry out amortization ratio calculating according to turning of producing for load total value and the residual capacity of power supply that finds, and obtain the amortization ratio value of each power supply；
When judging to disclosure satisfy that according to the amortization ratio value of power supply the load value turned in confession load list requires, produce load and share a turn confession operation scheme information, and share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load.
Further, the step that " comparing when turning for load total value more than the residual capacity of each power supply of generation; carry out amortization ratio calculating according to the residual capacity of the power supply turned in each section for load total value and record produced, and obtains the amortization ratio value of power supply in each section " particularly as follows:
Start to select from the power supply that residual capacity is maximum, and be overlapped the residual capacity of the power supply selected obtaining superposition value, when superposition value is not less than and turns for load total value, stop selecting；
Carry out amortization ratio calculating according to turning for load total value and the residual capacity of power supply that selected, and obtain the amortization ratio value of the power supply of greatest residual capacity in each section.
Further, " judge to disclosure satisfy that according to the amortization ratio value of power supply turn require for the load value in load list time; produce load and share and turn for operation scheme information; and share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load " step particularly as follows:
First load is searched for power-off switch, then again to residue load search from interconnection switch；
When judging to disclosure satisfy that according to the amortization ratio value of power supply that what search turns the requirement for the load value in load list, produce load and share and turn for operation scheme information；
And share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load.
Beneficial effect: the present invention utilizes heuristic rule and topological tree to combine, it is not necessary to use substantial amounts of calculating, just can quickly provide large-area power-cuts fault need to by the problem of multiple interconnection switches, block switch transition of operation load.Add monitoring system, it is possible to solve owing to on-line monitoring modeling procedure is chaotic simultaneously, the model information island caused lack of standardization, decrease the miscellaneous modeling process of traditional scheme, improve accuracy and reliability.On the other hand, owing to powernet monitoring method provided by the invention and system take the modeling scheme of maturation, implement so being easier to modeling.
Accompanying drawing explanation
Fig. 1 is the feed system overall structure schematic diagram of the present invention；
Fig. 2 is the structural representation of the first embodiment of the on-line monitoring module of the present invention；
Fig. 3 is the second example structure signal of the on-line monitoring module of the present invention；
Fig. 4 is the supply method flow chart of the present invention.
Detailed description of the invention
The present invention uses heuritic approach to solve the problem that power distribution network large-area power-cuts need to shift supply load on a large scale, the quickly inspection policies of the topology based on basic tree is have employed in sharing the process turning confession, can quickly provide load supply scheme without carrying out the traversal of complexity, the following specifically describes scheme provided by the invention:
Define about abbreviation and Key Term:
Block switch: block switch is normally closed switch, is kept closed under usual ruuning situation, and its major function is isolated fault etc..
Interconnection switch: interconnection switch is normal open switch, remains off under usual ruuning situation, shifts for emergency use.
Load transfer: under the premise meeting the basic demands such as the radial operation of electrical network, node voltage, line current, by changing the operation such as network breaker in middle state or excision load, fault zone internal loading is transferred to other power supply buses, thus reducing loss that fault brings, improving node voltage skew, eliminating the purposes such as circuit overload.
Load margin: the load margin of interconnection switch refer to this interconnection switch be connected feed line of power supply rated load and actual load at that time between difference.
Tree-data structure: it is by n(n >=1) individual limited node forms a set with hierarchical relationship.It is called " tree " be because it and look like the tree of a reversal of the natural order of things, say, that it be root upward, and leaf is down；It has following feature: each node has zero or more child node；The node not having forerunner is called root node；Each non-root node has and only one of which father node；Except root node, each child node can be divided into m disjoint subtree.
Section: the connected region being border with switch.
Referring to Fig. 1, during distribution network failure load transfer system include turning for load calculation module, turn power supply source search module, on-line monitoring module, independently turn power supply source judge module, load is shared and is turned for operation scheme generation module, load shedding execution module.
Turn for load List Generating Module for searching for power failure or the load be with of all sections of inspection switch device downstream, obtain turning for load total value and producing to turn for load list according to the carry calculation searched.Turn and include the information of load and the load value of load for load list.
Turn power supply source search module from having a power failure or inspection switch downstream section, travel through each section successively, if there is interconnection switch in section, stride across interconnection switch outwards to search for opposite side power supply, sequentially find all power supply sources that turns, and record the active load of each section in searching route.Wherein, the active load mode turning each section in power supply source search module record searching route is basic tree construction, and section, as the node of tree, has a power failure or inspection switch downstream section is the root node set.
Referring to Fig. 2, for the first embodiment structural representation of on-line monitoring film provided by the invention.As in figure 2 it is shown, this powernet monitoring system includes: status monitoring substation 3 and on-Line Monitor Device；
Status monitoring substation is used for receiving equipment account information, and after generating, according to described equipment account information, the SCD expansion templates file meeting SCD expansion templates form, sends described SCD expansion templates file to described on-Line Monitor Device；Status monitoring substation is additionally operable to the SCD expansion templates integrating documents after described on-Line Monitor Device is filled intact device relevant information and generates the SCD file at whole station.
On-Line Monitor Device is for the call format according to described SCD expansion templates file, and the ICD file according to on-Line Monitor Device, the device relevant information in described SCD expansion templates file is filled complete.
The powernet monitoring modular that the embodiment of the present invention provides can solve owing to on-line monitoring modeling procedure is chaotic on the one hand, and the model information island caused lack of standardization decreases the miscellaneous modeling process of traditional scheme, improves accuracy and reliability.
Referring to Fig. 3, for powernet monitoring modular provided by the invention second example structure schematic diagram.In the present embodiment, the function of the structure of this system and modules be will be described in greater detail.As it is shown on figure 3, this powernet monitoring system includes: production management system, status monitoring main website, status monitoring substation and on-Line Monitor Device.
Production management system is for generating equipment account information according to IEC61968 standard, and equipment account model is supplied to described status monitoring main website.
Status monitoring main website is for being sent to described status monitoring substation by described equipment account information by ftp.
Status monitoring substation is used for receiving equipment account information, and after generating, according to described equipment account information, the SCD expansion templates file meeting SCD expansion templates form, sends described SCD expansion templates file to described on-Line Monitor Device；Status monitoring substation is additionally operable to the SCD expansion templates integrating documents after described on-Line Monitor Device is filled intact device relevant information and generates the SCD file at whole station.More specifically, described status monitoring substation also includes:
Signal dispatcher module, for the information between reiving/transmitting state monitoring sub-station and status monitoring main website, on-Line Monitor Device.
Specifically include: receive the equipment account information issued by status monitoring main website；Start 61850 clients to be connected with on-Line Monitor Device foundation, and send described SCD expansion templates file by IEC61850 file service；And receive the SCD expansion templates file after the filling intact device relevant information of on-Line Monitor Device feedback.
Document processing module, generates, for the equipment account information received according to described signal dispatcher module, the SCD expansion templates file meeting SCD expansion templates form；And the described on-Line Monitor Device that described signal dispatcher module received fill intact device relevant information after SCD expansion templates integrating documents generate the SCD file at whole station.More specifically, the content of described SCD expansion templates file includes the account information of substation's once equipment and secondary device, and status monitoring substation is the IED title automatically distributed of on-Line Monitor Device and messaging parameter；Described account information includes asset number and device name.
On-Line Monitor Device is for the call format according to described SCD expansion templates file, and the ICD file according to on-Line Monitor Device, the device relevant information in described SCD expansion templates file is filled complete.More specifically, the call format of described SCD expansion templates file is:
The attribute of the monitoring location LNode node being pointed under Substation class node increases extended attribute ext:DOIDesc for storing the extended description of the data object extracted from ICD, is used for representing that the monitoring location that this monitoring location is corresponding describes information and business datum.
The unique identity property of extended attribute ext:mRID, the asset identification mRID of this attribute and equipment account information model equipment are increased for all nodes under Substaion node.
IED node increases extended attribute ext:mRID, i.e. the asset identification mRID of equipment in equipment account information model, it is necessary to fills in the Asset ID of secondary device in corresponding assets reduced model, is used for carrying out secondary device association.
Independently turn power supply source judge module for comparing turning with the residual capacity turning each power supply that power supply source search module 30 finds for load total value for turning of load List Generating Module generation, compare turn for load List Generating Module produce turn for load total value less than the residual capacity of the power supply currently compared time, using the power supply currently compared as can independently turn power supply source, and the information that can independently turn power supply source is supplied to dispatcher；Compare turn for load List Generating Module produce when turning for load total value more than the residual capacity of each power supply, order that what output was preset share is shared to load and is turned for operation scheme generation module 50.Further, when having the residual capacity of multiple power supply more than when turning for load total value, turn power supply source judge module compare turn for load List Generating Module produce turn for load total value less than the residual capacity of the power supply currently compared time, the power supply of the residual capacity being not less than the power supply currently compared is obtained from each section turning power supply source search module record, using the power supply of acquisition as independently turning power supply source, and according to descending order, the information that respectively can independently turn power supply source is supplied to dispatcher, finally selected one of them power supply to be operated performing as turning solution by dispatcher.
Load is shared and is turned for operation scheme generation module for and for turning of producing of load List Generating Module turning the residual capacity of the power supply that power supply source search module finds carry out amortization ratio calculating for load total value according to turning, and obtains the amortization ratio value of the power supply found；When judging to disclosure satisfy that according to the amortization ratio value of power supply the load value turned in confession load list requires, produce load and share a turn confession operation scheme information, and share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load；Load shares turn confession operation scheme generation module when judging the requirement that can not meet the load value searched according to the amortization ratio value of power supply, and the load shedding order that output is preset performs module to load shedding.Wherein, load is shared to turn and is included power supply for operation scheme generation module and select unit, amortization ratio computing unit, share and turn for operation scheme generation unit；Power supply selects unit for starting to select from the power supply that residual capacity is maximum, and be overlapped obtaining superposition value by the residual capacity of the power supply selected, when superposition value is not less than and turns for load total value, stop selecting, and the power supply selected is supplied to amortization ratio computing unit, wherein in order to ensure that each power supply can Cost Allocation load, power supply selects the unit power supply that first chosen distance power-off switch is nearest, such as search for from power-off switch to each power supply point interconnection switch, and each node in two switch room directapaths is counted, often find a power supply, then the node of process just adds 1；After having searched for, all countings node more than 1 is known as the main line of power-off switch；Then finding the 1st node that each power supply point is connected with main line, the switch between this node and power-off switch is more few, then claim this power supply and power-off switch more near, otherwise more remote；Amortization ratio computing unit is for carrying out amortization ratio calculating according to the residual capacity turning the power supply supplying load total value and power supply to select unit to provide, and obtains the amortization ratio value of the power supply of greatest residual capacity；Share and turn for operation scheme generation unit for when judging to disclosure satisfy that according to the amortization ratio value of power supply that what search turns the requirement for the load value in load list, produce load and share and turn for operation scheme information；When judging can not meet the requirement turned for the load value in load list searched according to the amortization ratio value of power supply, the load shedding order that output is preset performs module to load shedding.
Load shedding performs module and is used for responding load shedding order, the assigned priority of the active load according to record, the active load that each power supply chosen is with is cut down, and finally produces load for an operation scheme generation module and shares so that load is shared to turn and turn for an operation scheme information.Wherein, cut down principle be from priority minimum, but responsible consumer load can not be cut down, if still can not meet requirement after cutting down, then prompting user intervenes.Further, load shedding performs module and is operated as follows: the priority of given load, then in all trees, priority ratio assigned priority is searched low and do not have the tree node of child's node, and this node is deleted from tree, then the node satisfied condition is judged whether, if there being the node satisfied condition, then calculate the total load of all nodes satisfied condition found, then the load sum reaching to need to cut is judged whether, after judging the load sum reaching to need to cut, control corresponding power supply point and cut down corresponding load, perform " in all trees, to search priority ratio assigned priority low and there is no the tree node of child's node after judging the load sum being not reaching to need to cut, and by this node from tree delete " function；Without the node satisfied condition, then assigned priority heightens one-level, then judges whether the assigned priority heightened reaches the highest adjustable preferential level threshold values, if it is points out dispatcher, if not the function then performing " priority of given load ".
Refer to Fig. 4, the supply method of a kind of electric power network, comprise the following steps:
Step S301, the load that search has a power failure or all sections of inspection switch device downstream are with, obtain turning for load total value and producing to turn for load list according to the carry calculation searched.Wherein, turn confession load list and include the information of load and the load value of load.
Step S302, from having a power failure or inspection switch downstream section, traveling through each section successively, if there is interconnection switch in section, striding across interconnection switch and outwards searching for opposite side power supply, sequentially finds and all turns power supply source.Wherein, the also active load of each section in record searching route, the active load mode of each section in record searching route is basic tree construction, and section, as the node of tree, has a power failure or inspection switch downstream section is the root node set.
Step S303, the residual capacity for load total value with each power supply found that turns produced is compared, compare generation turn for load total value less than the residual capacity of the power supply currently compared time, using the power supply currently compared as can independently turn power supply source, and the information that can independently turn power supply source is supplied to dispatcher.
Step S304, comparing when turning for load total value more than the residual capacity of each power supply of generation, carries out amortization ratio calculating according to turning of producing for load total value and the residual capacity of each power supply that finds, and obtains the amortization ratio value of each power supply.Wherein, step S304 is particularly as follows: start to select from the power supply that residual capacity is maximum, and is overlapped the residual capacity of the power supply selected obtaining superposition value, when superposition value is not less than and turns for load total value, stops selecting；Carry out amortization ratio calculating according to turning for load total value and the residual capacity of power supply that selected, and obtain the amortization ratio value of the power supply of greatest residual capacity in each section.
Step S305, when judging to disclosure satisfy that according to the amortization ratio value of power supply the load value turned in confession load list requires, produce load to share and turn for operation scheme information, and share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load.Wherein, first step S305 particularly as follows: search for load to power-off switch from interconnection switch, then again to residue load search；When judging to disclosure satisfy that according to the amortization ratio value of power supply that what search turns the requirement for the load value in load list, produce load and share and turn for operation scheme information；And share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load.
Step S306, when judging can not meet the requirement turned for the load value in load list searched according to the amortization ratio value of power supply, the priority level of the active load according to record, after the active load that each power supply chosen is with is cut down, performs the step of step S303 again.
Claims (3)
1. an electric power network supply method, it is characterised in that: comprise the following steps:
The load that search has a power failure or all sections of inspection switch device downstream are with, obtains turning for load total value and producing to turn for load list according to the carry calculation searched；
From having a power failure or inspection switch downstream section, traveling through each section successively, if there is interconnection switch in section, striding across interconnection switch and outwards searching for opposite side power supply, sequentially find and all turn power supply source；
The residual capacity for load total value with each power supply found that turns produced is compared, compare generation turn for load total value less than the residual capacity of the power supply currently compared time, using the power supply currently compared as can independently turn power supply source, and the information that can independently turn power supply source is supplied to dispatcher；
Comparing when turning for load total value more than the residual capacity of each power supply of generation, carry out amortization ratio calculating according to turning of producing for load total value and the residual capacity of power supply that finds, and obtain the amortization ratio value of each power supply；
When judging to disclosure satisfy that according to the amortization ratio value of power supply the load value turned in confession load list requires, produce load and share a turn confession operation scheme information, and share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load.
2. a kind of electric power network supply method according to claim 1, it is characterized in that: the step of " comparing when turning for load total value more than the residual capacity of each power supply of generation; carry out amortization ratio calculating according to the residual capacity of the power supply turned in each section for load total value and record produced, and obtaining the amortization ratio value of power supply in each section " particularly as follows:
Start to select from the power supply that residual capacity is maximum, and be overlapped the residual capacity of the power supply selected obtaining superposition value, when superposition value is not less than and turns for load total value, stop selecting；
Carry out amortization ratio calculating according to turning for load total value and the residual capacity of power supply that selected, and obtain the amortization ratio value of the power supply of greatest residual capacity in each section.
3. a kind of electric power network supply method according to claim 1, it is characterized in that: " judge to disclosure satisfy that according to the amortization ratio value of power supply turn require for the load value in load list time; produce load and share and turn for operation scheme information; and share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load " step particularly as follows:
First load is searched for power-off switch, then again to residue load search from interconnection switch；
When judging to disclosure satisfy that according to the amortization ratio value of power supply that what search turns the requirement for the load value in load list, produce load and share and turn for operation scheme information；
And share load to turn and be supplied to dispatcher for operation scheme information, turn confession to instruct dispatcher to carry out load.
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