WO2011077221A2 - 電力供給システム - Google Patents
電力供給システム Download PDFInfo
- Publication number
- WO2011077221A2 WO2011077221A2 PCT/IB2010/003305 IB2010003305W WO2011077221A2 WO 2011077221 A2 WO2011077221 A2 WO 2011077221A2 IB 2010003305 W IB2010003305 W IB 2010003305W WO 2011077221 A2 WO2011077221 A2 WO 2011077221A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- amount
- electric power
- building
- power supply
- Prior art date
Links
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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Definitions
- the present invention relates to a power supply system that distributes power in a specified area including a plurality of buildings.
- Patent Document 1 an electric power supply control device is installed between all the customers who make up the group and the electric power system to which the electric utility supplies power when allocating the electric power supplied from the electric utility.
- the technology that the power supply control device adjusts the power supply / demand and lance by monitoring the amount of power demand at the customer is disclosed.
- Patent Document 1 The technology described in Patent Document 1 is that at least a part of the customers in the group is provided with a distributed power source such as a micro gas turbine generator, a solar generator, a wind generator, or a fuel cell.
- a distributed power source such as a micro gas turbine generator, a solar generator, a wind generator, or a fuel cell.
- the power supply control device has a function of collectively selling surplus power generated by the distributed power source to an electric power company and a function of purchasing electric power consumers' shortage of electric power collectively from the electric power company.
- the power supply control device collects the power shortage and distributes it to each electric power consumer when the power to be supplied to the entire group is insufficient. .
- Patent Document 2 provides a plurality of power generation load units including a solar cell, an orthogonal transformation unit, and an AC load, and a single control center including a common storage battery and a power storage control unit and connecting a plurality of power generation load units.
- a grid-connected photovoltaic power supply system that connects a power system provided by an electric power company and a control center has been proposed.
- the orthogonal transform unit has a function of converting DC power generated by the solar battery into AC power and supplying the AC power to the AC load and the power storage control unit.
- Patent Document 2 Since the technology described in Patent Document 2 is equivalent to a distributed power source, if the power generation load unit is regarded as an electric power consumer, a group of electric power consumers connected to the control center is formed. Will be. That is, the configuration described in Patent Document 2 is similar to the configuration described in Patent Document 1, and includes a distributed power source in a group including a plurality of power consumers, and power from an electric power system provided by an electric power company. And the reverse power flow to the power system are controlled by the center device.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2 0 0 2-1 0 4 9 9
- Patent Document 2 Japanese Unexamined Patent Publication No. 2 0 0 2-2 3 3 0 7 7
- the power generated by the distributed power source can be accommodated by each power consumer in the group, and the power system provided by the electric power company There is one connection point for connection.
- the amount of power supplied to the power supply control device or the control center and the power supply control device can be obtained for the electric power company without providing a power meter for each power consumer.
- Another advantage is that it is possible to collect electricity charges if the amount of power that has been subjected to reverse power flow from the control center is known.
- the present invention has been made in view of the above reasons, and it is possible to measure the amount of power received by each power consumer from the commercial power supply while suppressing the power received from the commercial power supply. Provide a system.
- a regional power network provided with a storage battery and laid in a prescribed region including a plurality of buildings
- a shared power source that stores and supplies power to and from each building via a power source
- a distributed power source that is installed in at least some of the buildings in the region and supplies surplus power to the shared power source
- each building A first wattmeter that measures the amount of power supplied from a commercial power source in the building, and a second wattmeter that bidirectionally measures the amount of power sent to and from the common power source via the regional power network in each building
- a distribution control device that distributes the power of the shared power source to the region based on the amount of power measured by the first power meter and the second power meter.
- the power supply system is connected to the power system, and the shared power supply has a function to store the storage battery with the power received from each building through the regional power network and to supply the storage battery power to each building through the local power network.
- Distribution control The equipment manages the amount of power so that the amount of power stored in the shared power source measured by the second power meter for each building is offset from the amount of power supplied from the shared power source, and When the electric energy per unit period measured by the first wattmeter reaches the specified value, power is supplied from the shared power source, and the electric energy per unit period measured by the first wattmeter in the building
- a power supply system is provided that returns power to the shared power supply when the value falls below the return value, which is lower than the specified value.
- a shared power supply is shared by multiple buildings in the area, and power is subsidized from the common power supply for buildings where the amount of power purchased from the commercial power supply has increased. It becomes possible to suppress electric power. For example, if contract power is set in each building, it is possible to prevent the demand power in each building from exceeding the contract power by leveling the power demand with a shared power source.
- some buildings in the region have a distributed power source, so if you use the power generated by the distributed power source in the building and store the surplus power in the storage battery installed in the shared power source, It becomes possible to share the power stored in the shared power source with buildings in the area. Moreover, by returning the amount of power that is subsidized by the shared power source using a distributed power source or a commercial power source, the electricity stored in the shared power source and the power received from the shared power source are offset for each building. Therefore, the amount of power purchased from commercial power sources in each building is almost the same as when no common power source is provided.
- control device controls the storage and discharge of the storage battery based on the unit price of the electricity bill. It is desirable.
- FIG. 1 is a block diagram illustrating an embodiment.
- FIG. 2 is a block diagram when the building in the above is a collective housing.
- a power conditioner 1 that converts the output of the photovoltaic power generator PV into AC power and enables grid connection with the commercial power grid P n 1 is provided.
- distribution board 12 is installed to supply power to each load.
- grid connection between power system Pn and power conditioner 11 is performed. Is called.
- distributed power sources include solar power generation devices PV, but power generation devices that use natural energy such as wind power generation devices, micro gas turbine power generation devices, and cogeneration systems that generate power and heat, such as fuel cells. Any type of distributed power source can be used as long as it can be used as a power generator.
- a storage battery SC 1 is installed, and the PV generator PV and the storage battery SC 1 are installed in the apartment house. It is desirable to share with each dwelling unit H of a building B4.
- the storage battery S C 1 is provided to store surplus power generated when power is supplied from the photovoltaic power generation device P V to the dwelling unit H.
- the electric power stored in the storage battery S C 1 can also be supplied to the dwelling unit H. For this reason, a charge / discharge circuit 13 for storing power in the storage battery S C 1 and discharging the storage battery S C 1 is provided.
- the building B4 which is a collective house, is equipped with a PV generator PV, so a power conditioner 1 1 is installed.
- the power conditioner 11 is used not only for direct current from the photovoltaic power generator PV but also for direct current power conversion from the storage battery SC1.
- Building B 4 has a distribution board 14 for distributing power to each dwelling unit H. If building B 4 is a collective housing, the contract power for the demand power may be set by the collective contract for the entire building B 4, and in this case, the inverter 1 1 Power is supplied to dwelling unit H from the PV power generator PV and storage battery SC 1 so that the demand power does not exceed the contracted power.
- the power conditioner 11 supplies the power of the solar power generation device PV to the dwelling unit H while the solar power generation device PV is generating power, and stores the storage battery SC 1 when there is surplus power.
- the power conditioner 11 monitors the power demand of the entire building B 4, and when the power demand reaches the specified value set based on the contract power, it uses the power of the storage battery SC 1 to Power is supplied.
- any building B 3 in the area is provided with a shared power source 2 that is shared in the area.
- the shared power source 2 includes a storage battery SC and a charge / discharge circuit 21 that stores and discharges the storage battery SC.
- the distribution controller 2 2 receives power from the common power source 2 and feeds power from the common power source 2.
- building B 3 is provided with shared power supply 2.
- building B 3 is assumed to be a building such as a local meetinghouse or local government hall, but shared power supply 2 is not necessarily provided in the building.
- the common power source 2 may be installed separately.
- the regional power grid P d is connected to each of the buildings B 1 to B 4 in the region separately from the commercial power grid P n.
- the regional power network Pd is laid between the distribution control device 22 and each of the buildings B1 to B4. Therefore, the distribution control device 2 2 has a function of distributing power individually between the buildings B 1 to B 4 and the common power source 2.
- an electric circuit equivalent to the local power network P d is provided between the power meter M 2 and the distribution control device 22 inside the building B 3.
- Each building B1 to B4 is provided with two types of wattmeters (power meters) M1 and M2.
- One wattmeter M1 measures the amount of power received from the power system Pn of the commercial power supply, and the other wattmeter M2 measures the amount of power sent to and from the common power supply 2 through the regional power grid Pd.
- the wattmeter M 2 has a function of measuring the amount of power received from the shared power source 2 in the buildings B 1 to B 4 and measuring the amount of power stored in the shared power source 2.
- the electricity meters M 2 of the buildings B 1 and B 4 provided with the photovoltaic power generators P V also have a function of measuring the amount of power stored in the shared power source 2. That is, the wattmeters M 2 of the buildings B 1 and B 4 have a function of measuring power bidirectionally.
- the electric power measured by these power meters M 1 and M 2 is notified to the distribution control device 2 2.
- the distribution control device 22 acquires the amount of electric power by communicating with the wattmeters M 1 and M 2.
- a local power network P d that can use power line carrier communication technology can be used as the communication path, or a wireless communication path may be used.
- the reverse power flow to the power system Pn of the commercial power supply is not assumed. Also commercial When a power failure occurs at the power source, it is possible to perform autonomous operation within the range of the regional power grid P d by separating it from the power grid P n.
- the amount of power used in each building B1 to B4 must be equivalent to the case where the storage battery SC is not shared. Therefore, the amount of power stored in the storage battery SC and the amount of power used from the storage battery SC are measured by the power meter M2, and the measured power amount is notified from the power meter M2 to the distribution control device 2 2. .
- the distribution control device 2 2 manages the use of the storage battery S C by using the electric energy measured by the wattmeter M 2 of each building B 1 to B 4.
- the distribution control device 2 2 includes a regional power meter that measures the amount of power stored in the storage battery SC and the amount of power used from the storage battery SC for each of the buildings B1 to B4 that use the shared power supply 2.
- M 3 is provided.
- the amount of power measured by the local power meter M3 is provided to determine the amount of power lost due to power transmission and power conversion.
- the total amount of power measured by the wattmeter M2 of each building B1 to B4 is equal to the amount of power measured by the regional wattmeter M3, but in practice the amount of power Differences occur depending on the loss. By calculating this difference, it is possible to take into account the amount of power lost when using the shared power supply 2, and it is possible to distribute the power of the shared power supply 2 fairly to each building B1 to B4. become.
- the unit price of the electricity charge for commercial power is set to the contract power based on the maximum value of the demand power in one month, with the average value of the power consumption every 30 minutes as the demand power. Based on this, the unit price of electricity charges is set. Therefore, in each building B1-B4, it is desirable to suppress the maximum value of demand power measured by the wattmeter M1.
- the distribution control device 2 2 calculates the power demand in each building B 1 to B 4 by obtaining the power consumption in each building B 1 to B 4 measured by the power meter M 1. (If the amount of power used every 30 minutes is acquired, the amount of power used can be used as a value proportional to the demand power).
- the distribution controller 2 2 Supporting power from shared power supply 2 This prevents the demand power from exceeding the contract power.
- Buildings B 1 and B 4 equipped with solar power generation devices P V can be used freely as long as they have a track record of storage in storage battery SC and the amount of stored power remains. Further, even when there is no remaining amount of stored power, the power can be supplied from the shared power source 2 if the storage battery SC has surplus power. On the other hand, even in the buildings B 2 and B 3 that are not equipped with the solar power generation device P V, power can be supplied from the common power source 2 if the storage battery SC has surplus power. Therefore, it becomes possible to prevent the demand power from exceeding the contract power by receiving power subsidy from the shared power source 2 when the demand power reaches the specified value in any of the buildings B1 to B4. .
- the solar power generation device PV when more power is used than the amount of power stored in the storage battery SC, the solar power generation device PV is used in the buildings B 1 and B 4.
- the amount of power subsidized by the shared power source 2 can be returned to the shared power source 2 when there is a surplus in the amount of power.
- it is desirable to set a deadline so that the amount of power received and the amount of power returned will be offset within an appropriate period. Such deadlines can be set in units of 1 day, 1 week, 1 month, 1 year, etc. If it cannot be returned in such a time limit, it is desirable to return the subsidized power by applying the power purchased from the power grid P n to the storage of the storage battery SC.
- buildings B 2 and B 3 that do not have PV generators use shared power supply 2
- the power demand drops to the return value set lower than the specified value
- Charging is performed using the power purchased from the power grid Pn.
- buildings B 2 and B 3 it is possible to prevent the demand power from exceeding the contract power by using the common power source 2, and when the demand power decreases, the storage battery SC is powered by the power purchased from the commercial power source. Will be charged.
- the amount of power measured by the power meter M 1 is the same as when the common power source 2 is not used. Therefore, in buildings B2 and B3, the demand for electricity does not exceed the contracted power, so the increase in electricity charges is suppressed, and moreover, the electricity companies pay the electricity charges that match the amount of electricity used.
- the time period when the unit price of electricity is low is a time period when the demand for power is low for the electric utility, so increasing the power consumption during this time period will lead to the leveling of power supply. It will be.
- each building B 1 to B 4 can store electricity in the shared power source 2 as necessary. It is possible to use the generated power. In particular, in buildings B 2 and B 3 that do not have photovoltaic power generation equipment PV, it is possible to prevent the demand power from exceeding the contract power by using the power stored in the storage battery SC. It becomes possible to control electricity charges in the entire area where it is used. In addition, the amount of electricity stored in the shared power source 2 and the amount of electricity used from the shared power source 2 are measured by the power meter M 2 for each building B 1 to B 4 and are collectively managed by the distribution controller 2 2.
- the shared power supply 2 can be used as if the storage battery SC is installed in each building B1 to B4.
- the amount of power that is commensurate with the amount of power assisted by the shared power source 2 is purchased from the commercial power source and returned to the shared power source 2.
- the total amount of power purchased from the commercial power source measured by the total M 1 is almost the same as when the common power source 2 is not used.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10838771.3A EP2518854B1 (en) | 2009-12-22 | 2010-12-20 | Electric power supply system |
US13/516,766 US9246333B2 (en) | 2009-12-22 | 2010-12-20 | Electric power supply system |
CN201080058872.3A CN102687363B (zh) | 2009-12-22 | 2010-12-20 | 电力供给系统 |
US15/002,575 US9640996B2 (en) | 2009-12-22 | 2016-01-21 | Electric power supply system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009291326A JP2011135651A (ja) | 2009-12-22 | 2009-12-22 | 電力供給システム |
JP2009-291326 | 2009-12-22 |
Publications (2)
Publication Number | Publication Date |
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WO2011077221A2 true WO2011077221A2 (ja) | 2011-06-30 |
WO2011077221A3 WO2011077221A3 (ja) | 2011-09-29 |
Family
ID=44196194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2010/003305 WO2011077221A2 (ja) | 2009-12-22 | 2010-12-20 | 電力供給システム |
Country Status (5)
Country | Link |
---|---|
US (2) | US9246333B2 (ja) |
EP (1) | EP2518854B1 (ja) |
JP (1) | JP2011135651A (ja) |
CN (1) | CN102687363B (ja) |
WO (1) | WO2011077221A2 (ja) |
Cited By (2)
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CN106779309A (zh) * | 2016-11-24 | 2017-05-31 | 华北电力大学(保定) | 关键线路多角度多层次的辨识方法 |
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JP2011135651A (ja) | 2009-12-22 | 2011-07-07 | Panasonic Electric Works Co Ltd | 電力供給システム |
JP2012249476A (ja) * | 2011-05-30 | 2012-12-13 | Panasonic Corp | 電力供給システム |
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JP2013143816A (ja) * | 2012-01-10 | 2013-07-22 | Ntt Facilities Inc | 電力供給システム、電力供給制御装置、電力供給方法及びプログラム |
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- 2010-12-20 EP EP10838771.3A patent/EP2518854B1/en active Active
- 2010-12-20 WO PCT/IB2010/003305 patent/WO2011077221A2/ja active Application Filing
- 2010-12-20 US US13/516,766 patent/US9246333B2/en active Active
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2016
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CN103168404A (zh) * | 2011-07-15 | 2013-06-19 | 日本电气株式会社 | 电池系统及其控制方法 |
CN106779309A (zh) * | 2016-11-24 | 2017-05-31 | 华北电力大学(保定) | 关键线路多角度多层次的辨识方法 |
CN106779309B (zh) * | 2016-11-24 | 2021-03-02 | 华北电力大学(保定) | 关键线路多角度多层次的辨识方法 |
Also Published As
Publication number | Publication date |
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WO2011077221A3 (ja) | 2011-09-29 |
JP2011135651A (ja) | 2011-07-07 |
EP2518854B1 (en) | 2017-02-08 |
US9246333B2 (en) | 2016-01-26 |
US9640996B2 (en) | 2017-05-02 |
EP2518854A4 (en) | 2013-05-29 |
CN102687363A (zh) | 2012-09-19 |
EP2518854A2 (en) | 2012-10-31 |
CN102687363B (zh) | 2015-07-29 |
US20120274133A1 (en) | 2012-11-01 |
US20160141880A1 (en) | 2016-05-19 |
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