WO2013128986A1 - 蓄電制御装置、蓄電制御装置の制御方法、プログラム、および蓄電システム - Google Patents
蓄電制御装置、蓄電制御装置の制御方法、プログラム、および蓄電システム Download PDFInfo
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- WO2013128986A1 WO2013128986A1 PCT/JP2013/051377 JP2013051377W WO2013128986A1 WO 2013128986 A1 WO2013128986 A1 WO 2013128986A1 JP 2013051377 W JP2013051377 W JP 2013051377W WO 2013128986 A1 WO2013128986 A1 WO 2013128986A1
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- Prior art keywords
- power
- storage battery
- control unit
- conversion unit
- output
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
Definitions
- the present disclosure relates to a storage control device, a control method for the storage control device, a program, and a storage system, and in particular, a storage control device capable of further improving reliability, a control method for the storage control device, a program, and storage. About the system.
- the operation of the storage system stops because the control device can not be driven when a power failure occurs. There is something to do.
- the storage system may not be able to be activated in an initial state in which power is not stored in the storage battery.
- the control device obtains power from a plurality of power supplies.
- the control device acquires power from, for example, the storage battery of the storage system and the auxiliary secondary battery, maintenance is necessary because the auxiliary secondary battery is deteriorated.
- Patent Document 1 discloses a fuel cell power generation system capable of switching a power supply path to a control circuit between a commercial power source and a fuel cell according to the situation.
- a control power supply circuit is set such that the DC power supply voltage supplied from the storage battery is output lower than the DC power supply voltage from the AC input supplied from the power system via the rectifier. Is disclosed.
- switching means for switching the power supply path to the control circuit is used, and for example, a power failure occurs because it is difficult to predict the occurrence of the power failure.
- the power supply path can not be switched in advance. Therefore, when a power failure occurs while the control circuit acquires power from the commercial power supply, the switching means can not switch the power supply path, and the control circuit is stopped.
- the power storage system can be kept operating by configuring the configuration in which power is supplied to the control circuit without switching the power supply path, which is more reliable. It is required to provide a high energy storage system. Furthermore, conventionally, when the operation of the storage system is stopped by consuming the power stored in the storage battery after the occurrence of the blackout, it is difficult to reactivate the storage system before the restoration of the power outage. .
- the present disclosure has been made in view of such a situation, and aims to be able to further enhance the reliability.
- a storage control device includes: a first power conversion unit that converts power supplied from a power system; and a second power conversion unit that converts power output from a storage battery that stores power.
- a control unit that is driven by the power output from the first power conversion unit and the power output from the second power conversion unit to control charging and discharging of the storage battery, and generates power using natural energy
- a third power conversion unit that converts the power output from the power generation apparatus to output the power to the control unit, and the voltage value of the power output from the first power conversion unit is the second power conversion unit. It is set higher than the voltage value of the power output from the power conversion unit.
- a voltage value of power output from the first power conversion unit is set higher than a voltage value of power output from the second power conversion unit. If it is determined that the power supply is started by the power output from the power generation apparatus via the third power conversion unit, the power generation apparatus outputs the power when the supply of power continues for a predetermined time or more after the start. Controlling to supply the stored power to the storage battery.
- a storage system includes a storage battery that stores power, a first power conversion unit that converts power supplied from a power system, and a second power conversion that converts power output from the storage battery.
- a controller that controls the charge and discharge of the storage battery by driving the power output from the first power converter and the power output from the second power converter; and using natural energy
- a third power conversion unit that converts the power output from the power generation apparatus to generate power to the control unit, and the voltage value of the power output from the first power conversion unit is It is set higher than the voltage value of the power output from the second power conversion unit.
- the voltage value of the power output from the first power conversion unit is set higher than the voltage value of the power output from the second power conversion unit.
- the reliability can be further enhanced.
- FIG. 1 is a block diagram showing a configuration example of a first embodiment of a storage control device to which the present technology is applied.
- a power system 12 for supplying power from a commercial power source is connected to the storage control device 11 via a distribution board 13, and a solar panel 14 is a power conditioner for PV (Photovoltaic). Connected via 15 Further, the distribution board 13 and the PV power conditioner 15 are connected to each other.
- PV Photovoltaic
- the distribution board 13 includes a circuit breaker (MCB: Molded Case Circuit Breaker) 21, an earth leakage circuit (ELB: Earth Leakage Circuit Breaker) 22 and 23, and a plurality of breakers 24. Connected to each other.
- the power system 12 is connected to the wiring breaker 21, the PV power conditioner 15 is connected to the leak breaker 22, the storage control device 11 is connected to the leak breaker 23, and the plurality of breakers 24 are not shown.
- the loads are connected to each other. For example, the power supplied from the power system 12 and the PV power conditioner 15 is distributed to the storage control device 11, the loads connected to the plurality of breakers 24, and the like through the distribution board 13. Further, the electric power stored in the storage control device 11 is distributed to the loads connected to the plurality of breakers 24 via the distribution board 13.
- the solar panel 14 is a panel configured by connecting a plurality of solar cell modules, and generates electric power in accordance with the irradiation amount of solar light.
- the PV power conditioner 15 adjusts, for example, the voltage of the power generated by the solar panel 14 so that the maximum power can be obtained from the solar panel 14. Then, the PV power conditioner 15 converts the power generated by the solar panel 14 into DC / AC (Direct Current / Alternating Current) and outputs the converted power to the distribution board 13.
- the PV power conditioner 15 also includes, for example, a stand-alone output terminal that outputs power when a power failure occurs, and the stand-alone output terminal is connected to the storage control device 11.
- the storage control device 11 includes a storage battery 31, a battery management system (BMS: Battery Management System) 32, a storage battery power conditioner 33, an AC / DC converter 34, a DC / DC (Direct Current / Direct Current) converter 35, and A control unit 36 is provided. Further, relays 37 to 39 for controlling a power supply path and backflow prevention means 40 and 41 are connected to the wiring inside the storage control device 11. Furthermore, connection terminals 42 to 44 are disposed in the housing of the storage control device 11, the distribution board 13 is connected to the connection terminal 42, and the PV power conditioner 15 is supported on the connection terminal 43. An output terminal is connected, and a load (not shown) is connected to the connection terminal 44.
- BMS Battery Management System
- the storage battery 31 and the storage battery power conditioner 33 are connected via the relay 37, and the storage battery power conditioner 33 and the connection terminal 42 are connected via the relay 38. Further, the wiring between the storage battery power conditioner 33 and the relay 38 and the connection terminal 43 are connected via the relay 39, and the storage battery power conditioner 33 and the connection terminal 44 are directly connected. Furthermore, the input terminal of the AC / DC converter 34 is connected to the wiring between the connection terminal 42 and the relay 38, and the output terminal of the AC / DC converter 34 is connected to the control unit 36 via the backflow prevention means 40.
- the input terminal of the DC / DC converter 35 is connected to the wiring between the storage battery power conditioner 33 and the relay 37, and the output terminal of the DC / DC converter 35 is connected via the backflow prevention means 41. Is connected to the control unit 36.
- Storage battery 31 stores the power supplied from storage battery power conditioner 33. Further, the power stored in the storage battery 31 is supplied to the storage battery power conditioner 33, and is also supplied to the control unit 36 via the DC / DC converter 35.
- the battery management system 32 communicates with the control unit 36 to manage the storage battery 31. For example, the battery management system 32 measures the voltage value of the power stored in the storage battery 31, the current value of the power input to and output from the storage battery 31, the temperature of the storage battery 31, etc. Send.
- the storage battery power conditioner 33 communicates with the control unit 36, and adjusts the power input / output to / from the storage battery 31 according to the charging state of the storage battery 31.
- the storage battery power conditioner 33 may use the power supplied from the power system 12 through the distribution board 13 or the power generated by the solar panel 14 and supplied through the PV power conditioner 15.
- AC / DC conversion is performed according to the storage capacity of the storage battery 31 and the storage battery 31 is supplied.
- the storage battery power conditioner 33 performs DC / AC conversion on the power stored in the storage battery 31 and supplies the power to a load connected to the distribution board 13.
- the storage battery power conditioner 33 performs DC / AC conversion of the power stored in the battery 31 and outputs power from the connection terminal 44 (self-sustaining output), and is connected to the connection terminal 44 Supply the load.
- the storage battery power conditioner 33 is configured to be able to convert power in both directions (AC / DC conversion and DC / AC conversion), and the DC side (the side to which the storage battery 31 is connected) ) Has a relatively large smoothing capacitor 45 built-in.
- the smoothing capacitor 45 stores the power corresponding to the capacity.
- the AC / DC converter 34 AC / DC converts the power supplied from the distribution board 13 or the storage battery power conditioner 33, and supplies the power to the control unit 36 via the backflow prevention means 40.
- the DC / DC converter 35 DC / DC converts the power supplied from the storage battery 31 or the storage battery power conditioner 33 and supplies the power to the control unit 36 via the backflow prevention means 41.
- the control unit 36 includes, for example, a central processing unit (CPU), a memory, and an input / output interface, and the CPU executes a program stored in the memory to store the storage control device via the input / output interface. Control 11 parts.
- the control unit 36 controls the storage battery power conditioner 33 so that the storage battery 31 is appropriately charged based on the measurement value acquired by communicating with the battery management system 32.
- the control unit 36 also controls the opening and closing of the relays 37 to 39 as necessary.
- the relays 37 to 39 switch on / off (closed state / opened state) of the respective wires according to the control of the control unit 36. Also, relays 38 and 39 are configured to turn on the wiring exclusively to each other, and when relay 38 is on, relay 39 is turned off, and when relay 39 is on, relay 38 is turned off. Ru. That is, the relays 38 and 39 are configured to connect either the distribution board 13 or the PV power conditioner 15 to the storage battery power conditioner 33.
- the backflow prevention means 40 and 41 have a current direction such that the power output from the AC / DC converter 34 and the power output from the DC / DC converter 35 are input only to the control unit 36. regulate.
- the storage control device 11 is configured, and the power supplied from the power system 12 is supplied to the control unit 36 via the AC / DC converter 34, and the power stored in the storage battery 31 is stored. Are supplied via the DC / DC converter 35. Therefore, in the storage control device 11, for example, when a power failure occurs, the control unit 36 can continue to be driven by the power stored in the storage battery 31. Thereby, the reliability of the storage control device 11 can be improved.
- the power path to the control unit 36 at the normal time when a power failure has not occurred is indicated by an open arrow. That is, at normal times, in the AC / DC converter 34, the power supplied from the power system 12 to the storage control device 11 through the distribution board 13 along the power supply path indicated by the thick open arrow is It is AC / DC converted and supplied to the control unit 36. Similarly, the power output from the storage battery 31 is DC / DC converted in the DC / DC converter 35 and supplied to the control unit 36 along the power supply path shown by the thin open arrow. .
- the voltage value of the output voltage of the AC / DC converter 34 is higher than the voltage value of the output voltage of the DC / DC converter 35 within the operable voltage range of the control unit 36. It is set. Specifically, when the operable voltage of the control unit 36 is set in the range of 24 V to 2 V each, the output voltage of the DC / DC converter 35 is set to about 22 V, and the AC / DC converter 34 is The output voltage of is set to about 26V.
- the power supplied to the control unit 36 is given priority over the power supplied from the power system 12 over the power supplied from the storage battery 31.
- the control unit 36 by preferentially supplying power from other than the storage battery 31 to the control unit 36, consumption of valuable power stored in the storage battery 31 can be suppressed.
- charging loss occurs when the storage battery 31 is charged, suppressing the consumption of the power stored in the storage battery 31 can improve the power efficiency as a whole.
- the storage control device 11 is configured to always supply power from the storage battery 31 to the control unit 36 via the DC / DC converter 35 even during normal times, a power failure occurs, for example. Even when the supply of power from the grid 12 is stopped, the storage control device 11 can continue to operate.
- FIG. 3 shows the path of the power supplied to the control unit 36 at the time of a power failure.
- the control unit 36 acquires power from both the power system 12 and the storage battery 31, and even when a power failure occurs, control from the storage battery 31 is not required. Unit 36 can be powered.
- the storage control device 11 the stop of the control unit 36 due to the power failure can be avoided, and the storage control device 11 can be kept operating. Therefore, the storage control device 11 can be effectively used in a storage system for disaster countermeasures at the time of a power failure.
- the relay 37 connected to the storage battery 31 is an important component for securing safety. Therefore, in the storage control device 11, in order to detect an abnormality of the relay 37 (for example, welding of contacts), it is desirable to operate so as to periodically check the operation of the relay 37. For example, the control unit 36 periodically performs control to turn on / off the relay 37 and confirms whether the relay 37 is operating normally.
- an abnormality of the relay 37 for example, welding of contacts
- the relay 37 is turned off (contact is opened).
- the control unit 36 can operate by obtaining the power supplied from the power system 12 via the AC / DC converter 34, as indicated by the thick open arrow.
- FIG. 5 shows the path of the power supplied to the control unit 36 when a power failure occurs during the confirmation of the operation of the relay 37.
- the power path to the storage control device 11 when a power failure occurs during the operation check of the relay 37 is indicated by a white arrow. That is, when a power failure occurs while confirming the operation of the relay 37, the electric power stored in the smoothing capacitor 45 of the storage battery power conditioner 33 is DC / DC converted by the DC / DC converter 35 and is transmitted to the control unit 36. Supplied.
- storage battery power conditioner 33 includes smoothing capacitor 45 having a relatively large capacity on the DC side, and power is accumulated in smoothing capacitor 45 during operation of storage battery power conditioner 33. ing.
- the storage battery power conditioner The power stored in the smoothing capacitor 45 of 33 can be utilized to supply power to the control unit 36.
- control unit 36 detects that a power failure has occurred during operation confirmation of the relay 37, the control unit 36 turns on the relay 37 (connects the contacts) while it can be driven by the power stored in the smoothing capacitor 45. Give priority to control. Since turning on the relay 37 causes the power stored in the storage battery 31 to be supplied to the control unit 36, the control unit 36 can continue to operate.
- control unit 36 when a power failure occurs during the operation check of the relay 37 will be described with reference to the flowchart of FIG. 6.
- control unit 36 when the control unit 36 is activated at normal times when no power failure occurs, the process is started, and at step S11, the control unit 36 executes the process of the normal mode.
- the storage battery power conditioner 33 is configured to charge the storage battery 31 with the power from the electric power system 12 or to supply the power stored in the storage battery 31 to a load (not shown) via the distribution board 13. Execute processing to control.
- the operation check of the relay 37 is periodically performed, and when the operation check of the relay 37 comes, the process proceeds to step S12.
- step S12 the control unit 36 turns off the relay 37 to confirm the operation, and confirms the operation of the relay 37.
- step S13 the control unit 36 determines whether or not the operation check of the relay 37 is completed, and if it is determined that the operation check of the relay 37 is completed, the process returns to step S11, and the same process is repeated. Is repeated.
- step S13 determines whether or not a power failure has occurred.
- step S14 when the control unit 36 determines that a power failure has not occurred, the process returns to step S13, and the same process is repeated thereafter.
- the control unit 36 determines in step S14 that a power failure has occurred, that is, if a power failure has occurred while checking the operation of the relay 37, the process proceeds to step S15.
- the control unit 36 is supplied with the power stored in the smoothing capacitor 45 of the storage battery power conditioner 33.
- step S15 the control unit 36 interrupts all the processing being executed and executes an interrupt processing to turn on the relay 37.
- the relay 37 which was turned off during the operation check is turned on, and the power stored in the storage battery 31 is supplied to the control unit 36 through the relay 37.
- step S16 the control unit 36 executes the process of the power failure mode, and the storage control device 11 continues operation.
- step S17 the control unit 36 determines whether or not the power failure has been recovered. If it is determined that the power failure has not been recovered, the process returns to step S16, and the processing in the power failure mode is continuously executed.
- step S17 determines whether the power failure has been recovered. If it is determined in step S17 that the power failure has been recovered, the process returns to step S11, is switched to the process of the normal mode, and the same process is repeated thereafter.
- the control unit 36 driven by the power supplied from the smoothing capacitor 45 gives priority to the process of turning on the relay 37. Since the power stored in the storage battery 31 is supplied to the control unit 36 via the relay 37, the storage control device 11 can continue operation.
- storage control device 11 is configured to use smoothing capacitor 45 incorporated in storage battery power conditioner 33, operation check of relay 37 without newly providing an auxiliary power supply etc. It is possible to cope with the blackout in the middle. Therefore, the storage control device 11 can eliminate the maintenance required when such an auxiliary power supply is provided.
- the smoothing capacitor 45 is normally operated when no power failure occurs. It will be in the state holding the electric power as much as it can accumulate. As a result, when a power failure occurs, the smoothing capacitor 45 can store the power necessary for the control unit 36 to perform the minimum operation.
- the storage control device 11 uses the smoothing capacitor 45 built in the storage battery power conditioner 33 to generate the operation check of the relay 37 without providing a new auxiliary power supply or the like outside. It is possible to cope with the blackout. Thereby, the reliability of the storage control device 11 can be improved.
- FIG. 7 is a block diagram illustrating a configuration example of a second embodiment of a storage control device to which the present technology is applied.
- the same components as those of the storage control device 11 in FIG. 1 will be assigned the same reference numerals and detailed descriptions thereof will be omitted.
- the storage control device 11 ′ includes a storage battery 31, a battery management system 32, a storage battery power conditioner 33, an AC / DC converter 34, a DC / DC converter 35, a control unit 36, and a relay.
- the components 37 and 39, the backflow prevention means 40 and 41, and the connection terminals 42 to 44 are common to the storage control device 11 of FIG.
- the storage control device 11 ′ is different from the storage control device 11 of FIG. 1 in that the storage control device 11 ′ includes an AC / DC converter 51, backflow prevention means 52 and 53, a connection terminal 54 and a relay 55.
- the electric power system 12 is connected to the storage control device 11 ′ via the distribution board 13, the solar panel 14 is connected via the PV power conditioner 15, and the display 16 is connected.
- the display 16 includes, for example, a display configured of a liquid crystal panel or the like, communicates with the control unit 36 to transmit and receive control signals, and displays an image according to an image signal supplied from the control unit 36 on the display. indicate. Further, the power necessary to drive the display 16 is supplied from the control unit 36.
- the input terminal of the AC / DC converter 51 is connected to the wiring between the relay 39 and the connection terminal 43, and the output terminal of the AC / DC converter 51 is connected to the control unit 36 via the backflow prevention means 52.
- the connection terminal 43 is connected to the free standing output terminal of the PV power conditioner 15, and the power output from the free standing output terminal of the PV power conditioner 15 is AC / DC through the connection terminal 43.
- the power is supplied to the converter 51, and the AC / DC converter 51 can AC / DC convert the power and supply it to the control unit.
- the backflow prevention means 52 and 53 together with the backflow prevention means 40 and 41, the power output from the AC / DC converter 34, the power output from the DC / DC converter 35, the output from the AC / DC converter 51
- the direction of the current is regulated such that the power and the power supplied from the outside via the connection terminal 54 are input only to the control unit 36.
- connection terminal 54 is a terminal for connecting an external power source for starting maintenance from the outside, and the connection terminal 54 is connected to the control unit 36 via the backflow prevention means 53.
- the relay 55 is disposed between a connection point of the AC / DC converter 34 and the relay 38 and the connection terminal 42, and turns on / off the wiring according to the control of the control unit 36.
- 36 is a path for obtaining power, a path for obtaining power from the control unit 36 via the AC / DC converter 51 from the free standing output terminal of the PV power conditioner 15, and a start for maintenance connected to the connection terminal 54
- a path is provided for the control unit 36 to obtain power from the power supply of
- the power supplied from the power system 12 is supplied to the control unit 36 via the AC / DC converter 34, and The power stored therein is supplied via the DC / DC converter 35.
- the power conditioner 15 for PV has stopped the output of the electric power from a stand-alone output terminal at this time.
- the power path of the storage control device 11 ′ at the normal time when a power failure does not occur is indicated by a white arrow. That is, at normal times, the power supplied from the power system 12 to the storage control device 11 ′ via the distribution board 13 along the power supply path indicated by the thick open arrow is the AC / DC converter 34. AC / DC conversion is supplied to the control unit 36. Similarly, the power output from the storage battery 31 is DC / DC converted in the DC / DC converter 35 and supplied to the control unit 36 along the power supply path shown by the thin open arrow. .
- the AC / DC converter 34 and the DC / DC conversion are performed such that the power supplied from the power system 12 has priority over the power supplied from the storage battery 31.
- the output voltage of the unit 35 is set.
- the control unit 36 sets the relays 37 and 55 to be turned off to prevent the occurrence of a hazard associated with the storage battery 31 when detecting that an abnormality has occurred in the system. It is done.
- the control unit 36 communicates with the re-battery management system 32, and detects that an abnormality has occurred in the system when the storage battery 31 becomes abnormally high temperature or when the storage battery 31 leaks. Then, as a result of the control unit 36 turning off the relays 37 and 55, the power supply path at the normal time is shut off, and the operation of the storage control apparatus 11 'is stopped.
- the storage control device 11 ′ is configured such that a maintenance person can connect maintenance power to the connection terminal 54 and supply power to the control unit 36 through the connection terminal 54.
- the control unit 36 can be activated by the power from the maintenance power supply 17, and a person who performs maintenance, for example, acquires the data log of the system or the status of each part configuring the storage control device 11 '. It can be confirmed.
- the PV power conditioner 15 when the solar panel 14 is generating power when a power failure occurs, the PV power conditioner 15 tries to output power from the self-sustaining output terminal. Thereby, in the storage control device 11 ′, the control unit 36 can acquire the power output from the self-sustaining output terminal of the PV power conditioner 15 via the AC / DC converter 51, and the storage battery 31. The stored power can be obtained via the DC / DC converter 35.
- the power path of the storage control device 11 'in the case where the solar panel 14 is generating power when a power failure occurs is indicated by a white arrow.
- the power output from the self-sustaining output terminal of the PV power conditioner 15 is supplied to the control unit 36 along the power supply path indicated by the thick open arrow. Be done.
- the power output from the storage battery 31 is supplied to the control unit 36 along the power supply path indicated by the thin white arrow.
- the voltage value of the output voltage of the AC / DC converter 51 is set higher than the voltage value of the output voltage of the DC / DC converter 35.
- the power output from the isolated output terminal of the PV power conditioner 15 is preferentially supplied to the control unit 36 rather than the power of the storage battery 31.
- control unit 36 preferentially acquires the power output from the self-sustaining output terminal of the PV power conditioner 15, whereby the storage control device 11 ′ consumes the power stored in the storage battery 31. It can be suppressed. Furthermore, in the storage control device 11 ′, the output from the stand-alone output terminal of the PV power conditioner 15 is used as a starting power source to reduce the remaining capacity of the storage battery 31 during a power failure, and the relay 37 is disconnected. The system can be restored from its own state.
- control unit 36 can not acquire power from either the power system 12 or the PV power conditioner 15.
- the control unit 36 can be driven by obtaining it from the storage battery 31. That is, even if the power from the power system 12 is interrupted at the moment of the power failure, in the storage control device 11 ′, the control unit 36 acquires power from the storage battery 31 in parallel with the power system 12, Can operate regardless of
- control unit 36 will continue to acquire power from the storage battery 31, so the remaining amount of the storage battery 31 will continue to decrease. Then, when the remaining amount of the storage battery 31 becomes equal to or less than a predetermined value, the control unit 36 can not obtain more power from the storage battery 31 to prevent deterioration of the storage battery 31 due to overdischarge. Control is performed to protect the storage battery 31. When a power failure occurs in a state where the remaining amount of the storage battery 31 is small, control is immediately performed to turn off the relay 37 and protect the storage battery 31.
- control unit 36 turns on the relay 39 to supply the power output from the standing output terminal of the PV power conditioner 15 to the storage battery power conditioner 33 to charge the storage battery 31.
- a power supply path for supplying the power output from the stand-alone output terminal of the PV power conditioner 15 to the control unit 36 via the AC / DC converter 51 is provided. Therefore, when the operation of the storage control device 11 'is stopped, the system can be restarted when the weather is improved even before the power failure is restored.
- the electric power generated by the solar panel 14 is not stable when the storage control device 11 'restarts in response to the improvement of the weather.
- the control unit 36 is started by the power generated by the solar panel 14, and the control unit 36 tries to turn on the relay 37, but the power is insufficient and chattering of the relay 37 occurs. It is assumed.
- control unit 36 performs control to turn on the relay 37 after a predetermined period of time until the power generated by the solar panel 14 is stabilized since the solar panel 14 starts power generation.
- the power generation by the solar panel 14 is not performed during the occurrence of a power failure, and the operation of the control unit 36 is stopped in a state where the remaining amount of the storage battery 31 becomes less than a predetermined value and the relay 37 is turned off.
- the process is started.
- step S21 the control unit 36 is activated by the power whose supply has been started.
- step S22 the control unit 36 determines whether or not the power is out. For example, when the power failure is restored, power is also supplied from the power system 12 to the storage battery power conditioner 33, so the control unit 36 attempts to communicate with the storage battery power conditioner 33. It can be determined whether or not there is a power failure state.
- step S22 determines in step S22 that the power failure state is not established, that is, if the power for starting the control unit 36 is supplied from the power system 12, the process proceeds to step S23.
- step S23 the control unit 36 shifts to the recovery mode in which the storage control device 11 'is recovered by the power from the power system 12.
- step S22 determines in step S22 that the power failure state has occurred
- the process proceeds to step S24, and the control unit 36 determines whether a forced activation signal is supplied. For example, when a maintenance worker connects the maintenance power supply 17 (see FIG. 9) to the connection terminal 54 and supplies power to the control unit 36 through the connection terminal 54, the control unit 36 is forcibly started separately. A signal is provided.
- step S24 when the control unit 36 determines that the forcible start signal is supplied, the process proceeds to step S25, and the control unit 36 restores the power storage control device 11 'by the power from the maintenance power supply 17. Transition to mode
- step S24 determines in step S24 that the forced activation signal is not supplied
- the process proceeds to step S26, and the control unit 36 generates electric power by the solar panel 14 and the PV power conditioner 15 It is determined that the power has been output from the independent output terminal of That is, in this case, power is not supplied from the power system 12 and the maintenance power supply 17, and since the relay 37 is turned off before the control unit 36 is started, the solar panel 14 generates power. It can be judged that it started by the electric power output from the self-supporting output terminal of the power conditioner 15 for PV.
- step S27 the control unit 36 determines, for example, using a timer counter (not shown) whether or not the supply of power has been continued for a predetermined time or more since startup, and determines that the supply of power is continued. Wait for processing.
- a timer counter not shown
- the control unit 36 stands by for a predetermined time
- the operation of the control unit 36 is When stopped and the supply of power is started again, the process is restarted from step S21.
- step S27 when the control unit 36 determines that the supply of power continues for a predetermined time or more after activation, the process proceeds to step S28.
- step S28 the control unit 36 determines that the power generation by the solar panel 14 is stable, and the storage control device is generated by the power generated by the solar panel 14 and output from the standing output terminal of the PV power conditioner 15. Transition to return mode to return 11 '. That is, in this case, in the recovery mode, the relay 37 is turned on and the relay 39 is turned on to supply the power output from the standing output terminal of the PV power conditioner 15 to the storage battery power conditioner 33. It instructs the storage battery power conditioner 33 to charge 31.
- the relay 37 is turned on after a predetermined period of time until the power generated by the solar panel 14 is stabilized since the solar panel 14 starts power generation. As a result, chattering of the relay 37 can be avoided, and the storage battery 31 can be charged reliably.
- control unit 36 can obtain power from a plurality of paths, the storage control device 11 'must start the control unit 36 even if a power failure occurs or the bad weather condition continues. Power can be used effectively even during normal times and power outages.
- the plurality of paths for the control unit 36 to obtain power may be only a part of the above.
- the above-described series of processes may be performed by hardware or software.
- the various functions are executed by installing a computer in which a program constituting the software is incorporated in dedicated hardware or various programs. Can be installed from, for example, a general-purpose personal computer from the program storage medium.
- those programs are stored in advance in the storage unit, and via a communication unit including a network interface or the like, or a magnetic disk (including a flexible disk), an optical disk (CD-ROM (Compact Disc-Read Only) It can be installed in a computer via a drive for driving removable media such as Memory), DVD (Digital Versatile Disc), magneto-optical disc, or semiconductor memory.
- a communication unit including a network interface or the like, or a magnetic disk (including a flexible disk), an optical disk (CD-ROM (Compact Disc-Read Only) It can be installed in a computer via a drive for driving removable media such as Memory), DVD (Digital Versatile Disc), magneto-optical disc, or semiconductor memory.
- the processes described with reference to the above-described flowchart do not necessarily have to be processed in chronological order according to the order described as the flowchart, and processes performed in parallel or individually (for example, parallel processes or objects Processing) is also included.
- the system represents the entire apparatus configured by a plurality of apparatuses.
- 11 storage controller 12 power system, 13 distribution board, 14 solar panel, 15 PV power conditioner, 16 indicator, 17 maintenance power supply, 21 wiring breaker, 22 and 23 leakage breaker, 24 breaker, 31 battery , 32 battery management system, 33 battery power conditioner, 34 AC / DC converter, 35 DC / DC converter, 36 control unit, 37 to 39 relays, 40 and 41 reverse current prevention means, 42 to 44 connection terminal, 43 Smoothing capacitor, 51 AC / DC converter, 52 and 53 reverse current prevention means, 54 connection terminal, 55 relay
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Stand-By Power Supply Arrangements (AREA)
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Abstract
Description
Claims (9)
- 電力系統から供給される電力を変換する第1の電力変換部と、
電力を蓄積する蓄電池から出力される電力を変換する第2の電力変換部と、
前記第1の電力変換部から出力される電力、および、前記第2の電力変換部から出力される電力により駆動し、前記蓄電池の充放電を制御する制御部と、
自然エネルギーを利用して発電する発電装置から出力される電力を変換して、前記制御部に出力する第3の電力変換部と
を備え、
前記第1の電力変換部から出力される電力の電圧値が、前記第2の電力変換部から出力される電力の電圧値よりも高く設定されている
蓄電制御装置。 - 前記制御部は、前記第3の電力変換部を介して前記発電装置から出力される電力により起動したと判断した場合、起動してから一定時間以上、電力の供給が継続したときに、前記発電装置から出力される電力を前記蓄電池に供給するように制御を行う
請求項1に記載の蓄電制御装置。 - 前記第3の電力変換部から出力される電力の電圧値が、前記第2の電力変換部から出力される電力の電圧値よりも高く設定されている
請求項1に記載の蓄電制御装置。 - 外部から前記制御部に電力を供給可能な外部電源を接続可能に構成されている
請求項1乃至3に記載の蓄電制御装置。 - 前記電力系統から供給される電力を前記蓄電池の充電状態に応じて調整し、前記電力系統から供給される電力を前記蓄電池に充電する調整部をさらに備え、
前記調整部および前記蓄電池を接続する配線と前記制御部とが前記第2の電力変換部を介して接続されており、
前記調整部は、前記蓄電池に接続される側に所定の容量の蓄電器を内蔵して構成される
請求項1乃至4のいずれかに記載の蓄電制御装置。 - 前記蓄電池と、前記第2の電力変換部および前記調整部との間の配線に接続される第1の開閉器をさらに備え、
前記第1の開閉器が開放状態ときに停電が発生すると、前記制御部は、前記調整部が内蔵する前記蓄電器から供給される電力により駆動して、前記第1の開閉器を閉鎖状態に切り替える処理を優先的に行う
請求項5に記載の蓄電制御装置。 - 電力系統から供給される電力を変換する第1の電力変換部と、
電力を蓄積する蓄電池から出力される電力を変換する第2の電力変換部と、
前記第1の電力変換部から出力される電力、および、前記第2の電力変換部から出力される電力により駆動し、前記蓄電池の充放電を制御する制御部と、
自然エネルギーを利用して発電する発電装置から出力される電力を変換して、前記制御部に出力する第3の電力変換部と
を備える蓄電制御装置の制御方法であって、
前記第1の電力変換部から出力される電力の電圧値が、前記第2の電力変換部から出力される電力の電圧値よりも高く設定されており、
前記制御部は、前記第3の電力変換部を介して前記発電装置から出力される電力により起動したと判断した場合、起動してから一定時間以上、電力の供給が継続したときに、前記発電装置から出力される電力を前記蓄電池に供給するように制御を行う
ステップを含む蓄電制御装置の制御方法。 - 電力系統から供給される電力を変換する第1の電力変換部と、
電力を蓄積する蓄電池から出力される電力を変換する第2の電力変換部と、
前記第1の電力変換部から出力される電力、および、前記第2の電力変換部から出力される電力により駆動し、前記蓄電池の充放電を制御する制御部と、
自然エネルギーを利用して発電する発電装置から出力される電力を変換して、前記制御部に出力する第3の電力変換部と
を備える蓄電制御装置のコンピュータに実行させるプログラムであって、
前記第1の電力変換部から出力される電力の電圧値が、前記第2の電力変換部から出力される電力の電圧値よりも高く設定されており、
前記制御部は、前記第3の電力変換部を介して前記発電装置から出力される電力により起動したと判断した場合、起動してから一定時間以上、電力の供給が継続したときに、前記発電装置から出力される電力を前記蓄電池に供給するように制御を行う
ステップを含む処理をコンピュータに実行させるプログラム。 - 電力を蓄積する蓄電池と、
電力系統から供給される電力を変換する第1の電力変換部と、
前記蓄電池から出力される電力を変換する第2の電力変換部と、
前記第1の電力変換部から出力される電力、および、前記第2の電力変換部から出力される電力により駆動し、前記蓄電池の充放電を制御する制御部と、
自然エネルギーを利用して発電する発電装置から出力される電力を変換して、前記制御部に出力する第3の電力変換部と
を備え、
前記第1の電力変換部から出力される電力の電圧値が、前記第2の電力変換部から出力される電力の電圧値よりも高く設定されている
蓄電システム。
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DE112013001186.7T DE112013001186T5 (de) | 2012-02-28 | 2013-01-24 | Stromspeichersteuervorrichtung, Verfahren zur Steuerung einer Stromspeichervorrichtung, Programm, sowie Stromspeichersystem |
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- 2013-01-24 WO PCT/JP2013/051377 patent/WO2013128986A1/ja active Application Filing
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US11031807B2 (en) | 2016-07-15 | 2021-06-08 | Sumitomo Electric Industries, Ltd. | Power supply device and power supply system |
Also Published As
Publication number | Publication date |
---|---|
US20140361725A1 (en) | 2014-12-11 |
JP6019614B2 (ja) | 2016-11-02 |
JP2013179767A (ja) | 2013-09-09 |
DE112013001186T5 (de) | 2014-11-13 |
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