CN107332236A - A kind of network load based on global search turns supplier's method - Google Patents
A kind of network load based on global search turns supplier's method Download PDFInfo
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- CN107332236A CN107332236A CN201710571196.3A CN201710571196A CN107332236A CN 107332236 A CN107332236 A CN 107332236A CN 201710571196 A CN201710571196 A CN 201710571196A CN 107332236 A CN107332236 A CN 107332236A
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- supply path
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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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Abstract
Turn supplier's method the invention discloses a kind of network load based on global search, comprise the following steps, step 1, obtain grid model data and Data of State Estimation, and it is according to grid model data and Data of State Estimation that power network is equivalent into a undirected authorized graph；Step 2, bus net capability is calculated；Step 3, according to step 1 obtain grid model data and Data of State Estimation, search bus it is feasible turn supply path；Step 4, decompression bus information is obtained, the feasible load transfer path of bus obtained according to step 3 obtains the feasible of decompression bus and turns to supply path, in this, as final load transfer scheme.The present invention can find feasible transmission line of electricity after decompression occurs for substation bus bar and turn to turn to supply path for path and bus connection switch, the load transfer scheme under substation bus bar deperssurization emergency can be fast and effeciently made by this method, management and control ability of the dispatcher to power network is improved, the safe and stable operation of power network is ensured.
Description
Technical field
The present invention relates to electric network intelligent scheduling field.
Background technology
In recent years, with the constant growth of Chinese national economy, all trades and professions increase sharply to the demand of electric power, but
Because Construction of Intercity Network is comparatively delayed, cause electric network composition it is unreasonable the problems such as than more prominent, this is difficult to meet to use
Requirement of the family to the quality of power supply, power supply reliability etc..Especially because the rise of the tertiary industry, the structure of electric load also occurs
Change, medium and small user rises including residential electricity consumption ratio year by year, causes the circuit in city electric distribution system increasingly longer, node
More and more, structure becomes increasingly complex, thus the probability broken down also accordingly increases.
When grid collapses, it is necessary to cut off faulty equipment as early as possible, the power supply to customer charge then should be recovered as soon as possible,
The scope for the influence that has a power failure is reduced as far as possible, so as to greatly reduce the social influence caused due to power failure and economic loss etc., together
When, it should also reduce the loss of supply network after failure as far as possible after troubleshooting, improve power supply reliability, and equilibrium assignment
The performances such as load.
Based on the demand, it is badly in need of finding a kind of method solving when the preceding load caused by apparatus overload and failure subtracts confession
Problem, realizes turn confession of load under failure.
The content of the invention
The technical problems to be solved by the invention are just to provide a kind of network load based on global search and turn supplier's method, solution
Problem certainly is supplied when the preceding load caused by apparatus overload and failure subtracts, turn confession of load under failure is realized.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：A kind of network load based on global search
Turn supplier's method, comprise the following steps,
Step 1, grid model data and Data of State Estimation are obtained, and according to grid model data and Data of State Estimation
Power network is equivalent into a undirected authorized graph,
Wherein, the bus of power network is equivalent to the summit of undirected authorized graph, and feeder line section, the active power of distribution transforming are equivalent to bus
Load, the active power of generator is equivalent to exerting oneself for bus, and the equivalent side into undirected authorized graph of transmission line of electricity of power network is defeated
The reactance of electric line as the side of corresponding undirected authorized graph weight；
Step 2, bus net capability is calculated；
Step 3, the grid model data and Data of State Estimation obtained according to step 1, the feasible Zhuan Gong roads of search bus
Footpath, is specifically included：
Step 31, global search is carried out to grid model data, searches for the transmission line of electricity being connected with certain bus and opposite end is female
Line, the net capability of obtained bus is calculated according to step 2, the net capability of opposite end bus is determined, if met
Transmission line of electricity is not connected and the net capability of opposite end bus is more than the load of bus, then transmission line of electricity and opposite end bus are female
One feasible transmission line of electricity of line turns to supply path；This step is repeated, all feasible power transmission lines of whole buses in power network are obtained
The turning of road and opposite end bus supplies path；
Step 32, global search is carried out to grid model data, searches for the bus connection switch that is connected with step 31 bus and right
Bus is held, the net capability of obtained bus is calculated according to step 2, the net capability of opposite end bus is determined, if
Meet that bus connection switch is not connected and the net capability of opposite end bus is more than the load of bus, then bus connection switch and opposite end bus
Be bus a feasible bus connection switch turn supply path；This step is repeated, obtaining power network median generatrix, all feasible mother is opened
Close and opposite end bus turn supply path；
Step 33, all feasible load transfer paths of all buses in the power network that storing step 31 and 32 is obtained；Step
Rapid 4, decompression bus information is obtained, according to the feasible load transfer path of the bus of step 3 acquisition, the feasible of decompression bus is obtained
Turn supply path, in this, as final load transfer scheme.
Comprise the following steps preferably, calculating bus net capability：
Step 21, bus original negative charge values P is read0；
Step 22, step-length h=0.01 × P is set0, cyclic variable i=1 is set；
Step 23, the load value P of bus is seti=Pi-1+h；
Step 24, Load flow calculation is carried out to undirected authorized graph using direct current method, checking the trend on the side of undirected authorized graph is
No to exceed its limitation, if more than limitation, the net capability of bus is Pi-1；
Step 25, if the trend on the side of undirected authorized graph is no more than limitation, cyclic variable i adds 1, repeat step 23 and step
Rapid 24.
Preferably, directly estimating in step 1 from the EMS acquisition grid model data and state of grid company
Count.
The present invention can find feasible transmission line of electricity after decompression occurs for substation bus bar and turn to supply path and bus connection switch
Turn to supply path, the load transfer scheme under substation bus bar deperssurization emergency can be fast and effeciently made by this method, improve
Dispatcher ensures the safe and stable operation of power network to the management and control ability of power network.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 turns the flow chart of supplier's method for the network load after the substation bus bar decompression of the present invention.
The embodiment schematic diagram that Fig. 2 turns to supply for the Cixi varying duty of the present invention.
Embodiment
As shown in figure 1, a kind of network load based on global search turns supplier's method, comprise the following steps：
Step 1, grid model data and Data of State Estimation are obtained, and according to grid model data and Data of State Estimation
Power network is equivalent into a undirected authorized graph,
Wherein, the bus of power network is equivalent to the summit of undirected authorized graph, and feeder line section, the active power of distribution transforming are equivalent to bus
Load, the active power of generator is equivalent to exerting oneself for bus, and the equivalent side into undirected authorized graph of transmission line of electricity of power network is defeated
The reactance of electric line as the side of corresponding undirected authorized graph weight；
Step 2, bus net capability is calculated；
Step 3, the grid model data and Data of State Estimation obtained according to step 1, the feasible Zhuan Gong roads of search bus
Footpath, is specifically included：
Step 31, global search is carried out to grid model data, searches for the transmission line of electricity being connected with certain bus and opposite end is female
Line, the net capability of obtained bus is calculated according to step 2, the net capability of opposite end bus is determined, if met
Transmission line of electricity is not connected and the net capability of opposite end bus is more than the load of bus, then transmission line of electricity and opposite end bus are female
One feasible transmission line of electricity of line turns to supply path；This step is repeated, all feasible power transmission lines of whole buses in power network are obtained
The turning of road and opposite end bus supplies path；
Step 32, global search is carried out to grid model data, searches for the bus connection switch that is connected with step 31 bus and right
Bus is held, the net capability of obtained bus is calculated according to step 2, the net capability of opposite end bus is determined, if
Meet that bus connection switch is not connected and the net capability of opposite end bus is more than the load of bus, then bus connection switch and opposite end bus
Be bus a feasible bus connection switch turn supply path；This step is repeated, obtaining power network median generatrix, all feasible mother is opened
Close and opposite end bus turn supply path；
Step 33, all feasible load transfer paths of all buses in the power network that storing step 31 and 32 is obtained；Step
Rapid 4, decompression bus information is obtained, according to the feasible load transfer path of the bus of step 3 acquisition, the feasible of decompression bus is obtained
Turn supply path, in this, as final load transfer scheme.
Wherein, step 2 calculates bus net capability and specifically includes following steps：
Step 21, bus original negative charge values P is read0；
Step 22, step-length h=0.01 × P is set0, cyclic variable i=1 is set；
Step 23, the load value P of bus is seti=Pi-1+h；
Step 24, Load flow calculation is carried out to undirected authorized graph using direct current method, checking the trend on the side of undirected authorized graph is
No to exceed its limitation, if more than limitation, the net capability of bus is Pi-1；
Step 25, if the trend on the side of undirected authorized graph is no more than limitation, cyclic variable i adds 1, repeat step 23 and step
Rapid 24.
In addition, directly estimating in step 1 from EMS (EMS) the acquisition grid model data and state of grid company
Count.
Specific embodiment：
Powered as shown in Fig. 2 Cixi becomes 220KV positive bus-bars by river small stream 4P68 lines, it is kind by river that Cixi becomes the secondary buses of 220KV
4P67 lines are powered, when river small stream 4P68 lines break down, and Cixi becomes 220kV positive bus-bar decompressions, cause Cixi to become 220KV positive bus-bars
Load subtracts confession.
Using the load transfer method of the present invention based on global search, load transfer scheme is provided：1. close Pu
Kind 2313 line, 220KV positive bus-bars load transfer is become to river in Jiangsu Province which flows into the Huangpu River of Shanghai Pu change 220KV positive bus-bars by Cixi；2. closing Cixi becomes 220KV mothers
Switch, 220KV positive bus-bars load transfer is become to the secondary buses of Cixi change 220KV by Cixi.
In addition to above preferred embodiment, the present invention also has other embodiments, and those skilled in the art can be according to this
Invention is variously modified and deformed, and without departing from the spirit of the present invention, all should belong in claims of the present invention and determine
The scope of justice.
Claims (3)
1. a kind of network load based on global search turns supplier's method, it is characterised in that comprise the following steps,
Step 1, grid model data and Data of State Estimation are obtained, and according to grid model data and Data of State Estimation by electricity
Net is equivalent into a undirected authorized graph,
Wherein, the bus of power network is equivalent to the summit of undirected authorized graph, and feeder line section, the active power of distribution transforming are equivalent to the negative of bus
Lotus, the active power of generator is equivalent to exerting oneself for bus, the equivalent side into undirected authorized graph of transmission line of electricity of power network, power transmission line
The reactance on road as the side of corresponding undirected authorized graph weight；
Step 2, bus net capability is calculated；
Step 3, according to step 1 obtain grid model data and Data of State Estimation, search bus it is feasible turn supply path, have
Body includes：
Step 31, global search is carried out to grid model data, searches for the transmission line of electricity and opposite end bus being connected with certain bus, root
The net capability of obtained bus is calculated according to step 2, the net capability of opposite end bus is determined, if meeting power transmission line
Road do not connect and opposite end bus net capability be more than bus load, then transmission line of electricity and opposite end bus are the one of bus
The feasible transmission line of electricity of bar turns to supply path；This step is repeated, all feasible transmission lines of electricity and right of whole buses in power network are obtained
End bus turn supply path；
Step 32, global search is carried out to grid model data, searches for the bus connection switch being connected with step 31 bus and opposite end is female
Line, the net capability of obtained bus is calculated according to step 2, the net capability of opposite end bus is determined, if met
Bus connection switch is not connected and the net capability of opposite end bus is more than the load of bus, then bus connection switch and opposite end bus are female
One feasible bus connection switch of line turns to supply path；Repeat this step, obtain power network median generatrix all feasible bus connection switch and
Opposite end bus turn supply path；
Step 33, all feasible load transfer paths of all buses in the power network that storing step 31 and 32 is obtained；
Step 4, decompression bus information is obtained, according to the feasible load transfer path of the bus of step 3 acquisition, decompression bus is obtained
It is feasible turn to supply path, in this, as final load transfer scheme.
2. a kind of network load based on global search according to claim 1 turns supplier's method, it is characterised in that
Bus net capability is calculated to comprise the following steps：
Step 21, bus original negative charge values P is read0；
Step 22, step-length h=0.01 × P is set0, cyclic variable i=1 is set；
Step 23, the load value P of bus is seti=Pi-1+h；
Step 24, Load flow calculation is carried out to undirected authorized graph using direct current method, checks whether the trend on the side of undirected authorized graph surpasses
Its limitation is crossed, if more than limitation, the net capability of bus is Pi-1；
Step 25, if the trend on the side of undirected authorized graph is no more than limitation, cyclic variable i adds 1, repeat step 23 and step
24。
3. a kind of network load based on global search according to claim 1 turns supplier's method, it is characterised in that step 1
In directly obtain grid model data and Data of State Estimation from the EMS of grid company.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808675A (en) * | 2018-07-13 | 2018-11-13 | 广东电网有限责任公司 | A kind of substation power loss distribution turns the automatic generation method of power supply plan |
| CN109066701A (en) * | 2018-08-09 | 2018-12-21 | 国网浙江省电力有限公司温州供电公司 | A kind of balancing the load method and system |
| CN109378815A (en) * | 2018-07-09 | 2019-02-22 | 南方电网科学研究院有限责任公司 | Power distribution network closed loop switching power supply control method, device and equipment |
| CN112165100A (en) * | 2020-09-18 | 2021-01-01 | 国网福建省电力有限公司龙岩供电公司 | Power grid over-supply power online control method and equipment |
| CN112186746A (en) * | 2020-09-18 | 2021-01-05 | 国网山东省电力公司淄博供电公司 | Method suitable for rapid load transfer of distribution network line of transformer substation |
| CN113013871A (en) * | 2021-01-25 | 2021-06-22 | 浙江华云信息科技有限公司 | Load transfer method for power distribution network equipment during fault and maintenance |
| CN114614468A (en) * | 2022-05-11 | 2022-06-10 | 广东电网有限责任公司佛山供电局 | Distribution network area load transfer analysis method, system and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956748A (en) * | 2014-03-31 | 2014-07-30 | 国家电网公司 | Method for generating fault recovery scheme for load transfer when multiple buses are in loss of voltage |
| US20140236513A1 (en) * | 2011-09-22 | 2014-08-21 | Jun Xiao | Region-based security evaluation method for the electric power distribution system |
| CN105226642A (en) * | 2015-09-22 | 2016-01-06 | 浙江大学 | Power distribution network service restoration method under a kind of transformer station shut down accident |
| CN105391053A (en) * | 2015-11-09 | 2016-03-09 | 四川大学 | Urban grid load balancing operation strategy based on high-voltage distribution network capacity topological reconstruction |
| CN106058855A (en) * | 2016-06-16 | 2016-10-26 | 南京工程学院 | Active power distribution network multi-target optimization scheduling method of coordinating stored energy and flexible load |
| CN106651628A (en) * | 2016-09-14 | 2017-05-10 | 国网天津市电力公司 | Regional cool and thermal power comprehensive energy optimizing configuration method and apparatus based on graph theory |
-
2017
- 2017-07-13 CN CN201710571196.3A patent/CN107332236B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140236513A1 (en) * | 2011-09-22 | 2014-08-21 | Jun Xiao | Region-based security evaluation method for the electric power distribution system |
| CN103956748A (en) * | 2014-03-31 | 2014-07-30 | 国家电网公司 | Method for generating fault recovery scheme for load transfer when multiple buses are in loss of voltage |
| CN105226642A (en) * | 2015-09-22 | 2016-01-06 | 浙江大学 | Power distribution network service restoration method under a kind of transformer station shut down accident |
| CN105391053A (en) * | 2015-11-09 | 2016-03-09 | 四川大学 | Urban grid load balancing operation strategy based on high-voltage distribution network capacity topological reconstruction |
| CN106058855A (en) * | 2016-06-16 | 2016-10-26 | 南京工程学院 | Active power distribution network multi-target optimization scheduling method of coordinating stored energy and flexible load |
| CN106651628A (en) * | 2016-09-14 | 2017-05-10 | 国网天津市电力公司 | Regional cool and thermal power comprehensive energy optimizing configuration method and apparatus based on graph theory |
Non-Patent Citations (3)
| Title |
|---|
| 徐爱军 等: "基于分层思想的配电网负荷转供算法", 《科学技术与工程》 * |
| 朱雪飞 等: "基于N_1准则的中压配电线转供能力实用测算分析", 《电力建设》 * |
| 武志刚 等: "基于图论和改进模糊遗传算法的配电网转供方法", 《华南理工大学学报（自然科学版）》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378815A (en) * | 2018-07-09 | 2019-02-22 | 南方电网科学研究院有限责任公司 | Power distribution network closed loop switching power supply control method, device and equipment |
| CN109378815B (en) * | 2018-07-09 | 2022-05-27 | 南方电网科学研究院有限责任公司 | Power distribution network closed loop switching power supply control method, device and equipment |
| CN108808675A (en) * | 2018-07-13 | 2018-11-13 | 广东电网有限责任公司 | A kind of substation power loss distribution turns the automatic generation method of power supply plan |
| CN108808675B (en) * | 2018-07-13 | 2021-04-02 | 广东电网有限责任公司 | Automatic generation method for power supply conversion scheme of voltage-loss distribution network of transformer substation |
| CN109066701A (en) * | 2018-08-09 | 2018-12-21 | 国网浙江省电力有限公司温州供电公司 | A kind of balancing the load method and system |
| CN109066701B (en) * | 2018-08-09 | 2022-02-22 | 国网浙江省电力有限公司温州供电公司 | Load balancing method and system |
| CN112165100A (en) * | 2020-09-18 | 2021-01-01 | 国网福建省电力有限公司龙岩供电公司 | Power grid over-supply power online control method and equipment |
| CN112186746A (en) * | 2020-09-18 | 2021-01-05 | 国网山东省电力公司淄博供电公司 | Method suitable for rapid load transfer of distribution network line of transformer substation |
| CN112165100B (en) * | 2020-09-18 | 2022-04-01 | 国网福建省电力有限公司龙岩供电公司 | Power grid over-supply power online control method and equipment |
| CN113013871A (en) * | 2021-01-25 | 2021-06-22 | 浙江华云信息科技有限公司 | Load transfer method for power distribution network equipment during fault and maintenance |
| CN114614468A (en) * | 2022-05-11 | 2022-06-10 | 广东电网有限责任公司佛山供电局 | Distribution network area load transfer analysis method, system and device |
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