WO2017141350A1 - Dispositif de stockage d'énergie de type à alimentation en énergie semi-indépendante - Google Patents

Dispositif de stockage d'énergie de type à alimentation en énergie semi-indépendante Download PDF

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Publication number
WO2017141350A1
WO2017141350A1 PCT/JP2016/054460 JP2016054460W WO2017141350A1 WO 2017141350 A1 WO2017141350 A1 WO 2017141350A1 JP 2016054460 W JP2016054460 W JP 2016054460W WO 2017141350 A1 WO2017141350 A1 WO 2017141350A1
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WO
WIPO (PCT)
Prior art keywords
power
load
secondary battery
switching device
detection device
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PCT/JP2016/054460
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English (en)
Japanese (ja)
Inventor
壽 塚本
Original Assignee
Ｃｏｎｎｅｘｘ Ｓｙｓｔｅｍｓ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｃｏｎｎｅｘｘ Ｓｙｓｔｅｍｓ株式会社 filed Critical Ｃｏｎｎｅｘｘ Ｓｙｓｔｅｍｓ株式会社
Priority to PCT/JP2016/054460 priority Critical patent/WO2017141350A1/fr
Publication of WO2017141350A1 publication Critical patent/WO2017141350A1/fr

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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

Definitions

  • the present invention relates to a semi-independent power storage device capable of connecting a commercial power source while using as much renewable energy as possible to supply electric power to various household electric appliances.
  • the switch is configured by a semiconductor switch circuit capable of switching operation for a very short time, and the control unit determines that a power failure has occurred in the commercial power source and the AC side of the inverter.
  • a power supply system is described that can continue to supply AC power output from an inverter to a power load device without causing an instantaneous power failure if the connection between the two is immediately interrupted by a switch. Yes.
  • the commercial power supply, the solar battery device, and the power storage device are all connected to the server device and the air conditioner at the same time except during a power failure, the power supplied from the renewable energy power generation device and the secondary battery is as effective as possible.
  • complicated control must be executed to increase the ratio of power supplied from the renewable energy power generation device and the secondary battery and to decrease the ratio of power supplied from the commercial power source. there were.
  • a load detection device for measuring the power consumption of the load is not provided, there is a problem that easy-to-understand control based on real-time power consumption cannot be performed.
  • the power storage device cannot be completely shut off and power cannot be supplied only from a commercial power source, there is a problem that it cannot be used safely.
  • the present invention has been made in view of such conventional problems, and an object of the present invention is to implement a renewable energy power generator by executing simple and easy-to-understand control based on real-time power consumption. Another object of the present invention is to provide a semi-independent power storage device capable of effectively using power supplied from a secondary battery as much as possible. In addition to the above object, another object of the present invention is to provide a semi-independent power storage device that can be used safely.
  • the present inventor first stopped the electrical products such as TVs and lamps when the power supply source was switched between the secondary battery and the commercial power source. However, if it is reset to the initial state and the switching time at that time is one cycle or less of the AC wave of the commercial power supply, the electrical product will not stop or reset, and the switching time at that time will be 3 milliseconds. In the case of the above, it has been found that since no spark is generated, it can be used safely.
  • the inventor includes a load detection device and a switching device for each of the essential load corresponding to the server device of Patent Document 1 and the general load corresponding to the air conditioner, and the real time measured by the load detection device. It has been found that the power supplied from the renewable energy power generation device and the secondary battery can be used as effectively as possible by executing simple and easy-to-understand control that switches the power supply source based on the power consumption. Invented.
  • the present invention is connected to a commercial power source, detects a power failure of the commercial power source, and is connected to a renewable energy power generation device, and charges the generated power of the renewable energy power generation device.
  • a secondary battery that discharges, a first load detection device that detects power consumption of a first load, a second load detection device that detects power consumption of a second load different from the first load, a power failure detection device, and a first
  • a first switching device that switches or holds a supply source of power supplied to the first load to one of a commercial power source and a secondary battery based on detection results of the load detection device and the second load detection device; Based on the detection results of the device and the first load detection device and the second load detection device, the power supply source to be supplied to the second load is switched to or maintained at either the commercial power source or the secondary battery
  • the second switching device and the renewable energy power generation device convert the power generated and output to the secondary battery, and also convert the power discharged from the secondary battery and output to the first switching device and the second switching device.
  • the first load detection device is connected between the first switching device and the first load
  • the second load detection device is provided between the second switching device and the second load.
  • the first switching device and the second switching device are connected to provide a semi-independent power storage device that switches a power supply source in a time of 3 milliseconds or more and one cycle or less of an AC wave of a commercial power supply.
  • the first switching device and the second switching device are the sum of the power consumption of the first load detected by the first load detection device and the power consumption of the second load detected by the second load detection device.
  • the condition exceeds a preset condition based on the output capability of the power converter, the power supply source is switched from the secondary battery to the commercial power source or held as it is, and the first switching device detects the power failure.
  • the power supply source is switched from the commercial power source to the secondary battery, or the secondary battery remains as it is, and the second switching device, when the power failure detection device detects a power failure, It is preferable to switch the power supply source from the secondary battery to the commercial power source or to keep the commercial power source.
  • the first switching device and the second switching device provide a supply source of power to be supplied to the first load and the second load when the voltage of the secondary battery reaches the end-of-discharge voltage or when the secondary battery fails. It is preferable to switch from the secondary battery to the commercial power source or keep the commercial power source as it is. Furthermore, it is preferable to have an AC / DC converter that converts the power of the commercial power source and outputs it to the secondary battery.
  • the semi-independent power storage device is preferably configured such that the supply source of power supplied to a third load different from both the first load and the second load is always a commercial power source.
  • the power supplied from the renewable energy power generation device and the secondary battery can be utilized as effectively as possible. Moreover, according to this invention, in addition to the said effect, it can be used safely.
  • FIG. 1 is a circuit block diagram showing a semi-independent power storage device of the present invention.
  • FIG. 1 is a circuit block diagram showing a semi-independent power storage device of the present invention.
  • the semi-independent power storage device 10 of the present invention includes a power failure detection device 12, a secondary battery 14, a first load detection device 16a, a second load detection device 16b, a first switching device 18a, a second switching device 18b, and power conversion.
  • Device 20 The power failure detection device 12 is connected to the commercial power source 32 and detects a power failure of the commercial power source 32.
  • a main breaker 34 is connected between the power failure detection device 12 and the commercial power supply 32.
  • the secondary battery 14 is connected to the renewable energy power generation device 36, charges the power generated by the renewable energy power generation device 36, and discharges the charged power.
  • the first load detection device 16a measures the power consumption of the first load 40a.
  • the second load detection device 16b measures the power consumption of the second load 40b different from the first load 40a.
  • the first switching device 18a supplies the commercial power supply 32 and the secondary power supply source to the first load 40a. Switching to or holding one of the batteries 14 is performed.
  • the second switching device 18b uses the commercial power supply 32 and the secondary power supply source to supply the second load 40b. Switching to or holding one of the batteries 14 is performed.
  • the power conversion device 20 includes a DC / DC conversion device 20a and a DC / AC conversion device 20b.
  • the DC / DC conversion device 20a converts the power generated by the renewable energy power generation device 36 and outputs it to the secondary battery 14.
  • the DC / AC converter 20b further converts the discharge power from the secondary battery 14 converted by the DC / DC converter 20a to convert the power discharged from the secondary battery 14.
  • the data is output to the first switching device 18a and the second switching device 18b.
  • the first load detection device 16a is connected between the first switching device 18a and the first load 40a
  • the second load detection device 16b is connected between the second switching device 18b and the second load 40b. .
  • the first switching device 18a and the second switching device 18b switch the power supply source in a time of 3 milliseconds or more and one cycle or less of the AC wave of the commercial power supply 32. If this switching time is less than 3 milliseconds, sparks may occur and cannot be used safely. In addition, when this switching time exceeds one cycle of the AC wave of the commercial power supply 32, that is, when it exceeds 20 milliseconds at 50 Hz, or when it exceeds 16.7 milliseconds at 60 Hz, the rate at which the electrical product is stopped or reset Is significantly higher. With such a configuration, the semi-independent power storage device 10 of the present invention can make effective use of the power supplied from the renewable energy power generation device and the secondary battery as much as possible, and can be used safely. Can do.
  • the first switching device 18a and the second switching device 18b of the semi-independent power storage device 10 of the present invention can be used when the voltage of the secondary battery 14 reaches the end-of-discharge voltage or when the secondary battery 14 fails.
  • the supply source of power supplied to the first load 40a and the second load 40b may be switched from the secondary battery 14 to the commercial power source 32, or may be held as it is.
  • the first load 40a and the second switch 18b are operated by operating the first switching device 18a and the second switching device 18b.
  • the two loads 40b can be disconnected from the secondary battery 14. In that case, the failure of the secondary battery 14 is detected by monitoring the voltage, current, and temperature of the secondary battery 14.
  • the semi-independent power storage device 10 of the present invention may further include a third switching device 22.
  • the third switching device 22 switches the supply source of power supplied to the first load 40a and the second load 40b from the secondary battery 14 to the commercial power source 32 or the commercial power source 32. It keeps it as it is. That is, when the secondary battery 14 fails and needs to be replaced, the first load 40a is manually operated by operating the third switching device 22 instead of operating the first switching device 18a and the second switching device 18b. In addition, the second load 40 b can be disconnected from the secondary battery 14. In addition, when the failure of the secondary battery 14 can be detected by monitoring the voltage, current, and temperature of the secondary battery 14, the third switching device 22 can be automatically operated. With such a configuration, the semi-independent power storage device 10 of the present invention can be used safely.
  • the semi-independent power storage device 10 of the present invention may further include an AC / DC conversion device 24.
  • the AC / DC converter 24 converts the power of the commercial power supply 32 and outputs it to the secondary battery 14. That is, the secondary battery 14 can charge the power of the commercial power source 32 converted by the AC / DC converter 24.
  • the semi-independent power storage device 10 of the present invention can utilize the power supplied from the renewable energy power generation device and the secondary battery as effectively as possible.
  • the semi-independent power storage device 10 of the present invention may be configured such that the supply source of power supplied to the third load 40c is always the commercial power supply 32.
  • the third load 40c is different from both the first load 40a and the second load 40b. That is, it can be configured such that the discharge power from the secondary battery 14 is not supplied to the third load 40c.
  • the semi-independent power storage device 10 of the present invention can utilize the power supplied from the renewable energy power generation device and the secondary battery as effectively as possible.
  • the first load 40a of the semi-independent power storage device 10 includes at least one electricity in a refrigerator, a natural refrigerant heat pump water heater, a communication device, a minimum lighting, a minimum air conditioner, and a minimum television.
  • a product is preferred. That is, power is supplied mainly from the secondary battery 14 to the first load 40a, and power is also supplied from the commercial power source 32 as necessary, and power supply from the secondary battery 14 continues even during a power failure. Therefore, the electric products to be used are classified even until the power failure is restored.
  • the first load 40a further includes a leakage breaker 42a and a safety breaker 44a in the distribution board.
  • the leakage breaker 42a is connected to the first load detector 16a, and the safety breaker 44a is electrically connected to the leakage breaker 42a. Connected between products.
  • the second load 40b is at least one electric product in a washing machine, a dishwasher, a vacuum cleaner, a light other than a minimum light, an air conditioner other than a minimum air conditioner, and a TV other than a minimum TV.
  • the second load 40b is mainly supplied with power from the secondary battery 14, and is also supplied from the commercial power source 32 as necessary, and the supply of power from the secondary battery 14 is stopped during a power failure. Therefore, electric products that are not used until the power failure is recovered are classified.
  • the second load 40b further includes an earth leakage breaker 42b and a safety breaker 44b in the distribution board.
  • the earth leakage breaker 42b is connected to the second load detection device 16b, and the safety breaker 44b is electrically connected to the earth leakage breaker 42b. Connected between products.
  • the third load 40c is at least one electric product among an electromagnetic cooker and a radiant heater. That is, since the electric power is always supplied from the commercial power supply 32 to the third load 40c and the electric power from the secondary battery 14 cannot be supplied even during a power failure, the electric products that cannot be used until the power failure is recovered are classified.
  • the third load 40c further includes a leakage breaker 42c and a safety breaker 44c in the distribution board.
  • the leakage breaker 42c is connected to the power failure detection device 12, and the safety breaker 44c is connected to the leakage breaker 42c, the electrical product, and the like. Connected between.
  • the first switching device 18a and the second switching device 18b of the semi-independent power storage device 10 of the present invention detect the power consumption of the first load 40a detected by the first load detection device 16a and the second load detection device 16b.
  • the power supply source is switched from the secondary battery 14 to the commercial power source 32 or the commercial power source. You may hold
  • the first switching device 18a and the second switching device performs switching or holding so that the power supply source is the commercial power source 32.
  • the output capability of the power converter 20 refers to the smaller of the output capability of the DC / DC converter 20a and the output capability of the DC / AC converter 20b.
  • the first switching device 18a may switch the power supply source from the commercial power supply 32 to the secondary battery 14 or hold the secondary battery 14 as it is. That is, the first switching device 18a performs switching or holding so as to continue the supply of power from the secondary battery 14 even during a power failure.
  • the second switching device 18b may switch the power supply source from the secondary battery 14 to the commercial power source 32 or keep the commercial power source 32 as it is. That is, the second switching device 18b performs switching or holding so as to stop the supply of power from the secondary battery 14 at the time of a power failure.
  • the semi-independent power storage device 10 of the present invention can make effective use of the power supplied from the renewable energy power generation device and the secondary battery as much as possible, and can be used safely. Can do.
  • the above-described preset condition is that when the continuous rated output power of the power converter 20 is 2 kW, the sum of the power consumption of the first load 40a and the power consumption of the second load 40b is 2 kW or more and less than 3 kW, and the continuous time The time may be 10 minutes, or 3 kW or more and a continuous time of 2 seconds. That is, when the condition is exceeded, the specification of the power conversion device 20 is exceeded, so the first switching device 18a and the second switching device 18b switch or hold so that the power supply source is the commercial power source 32. With such a configuration, the semi-independent power storage device 10 of the present invention can be used safely.
  • the first switching device 18a and the second switching device 18b use the secondary battery 14 as the power supply source. May be switched from the commercial power source 32 to the commercial power source 32 or may be held as it is. That is, in such a case, since the specifications of the power conversion device 20 are exceeded, the first switching device 18a and the second switching device 18b are switched or held so that the power supply source is the commercial power source 32. With such a configuration, the semi-independent power storage device 10 of the present invention can be used safely.
  • the temperature of the power converter 20 refers to the higher one of the temperature of the DC / DC converter 20a and the temperature of the DC / AC converter 20b.
  • the sum of the power consumption of the first load 40a and the power consumption of the second load 40b of the semi-independent power storage device 10 of the present invention is less than a preset condition, and the temperature of the power conversion device 20 is 40 ° C. or less.
  • the first switching device 18a and the second switching device 18b change the power supply source from the commercial power source 32 to the secondary battery 14. You may switch. That is, when the following three conditions are satisfied, the first switching device 18 a and the second switching device 18 b switch so that the power supply source is the secondary battery 14.
  • the first condition is, for example, when the continuous rated output power of the power converter 20 is 2 kW, when the sum of the power consumption of the first load 40a and the power consumption of the second load 40b is less than 2 kW, or 2 kW
  • the second condition is when the temperature of the power conversion device 20 becomes 40 ° C. or lower, that is, when it falls within the specifications of the power conversion device 20.
  • the third condition is when 20 minutes or more have elapsed after switching the power supply source to the commercial power supply 32.
  • the semi-independent power storage device 10 of the present invention can make effective use of the power supplied from the renewable energy power generation device and the secondary battery as much as possible, and can be used safely. Can do.
  • the semi-independent power storage device of the present invention is basically configured as described above.
  • the semi-independent power storage device of the present invention makes effective use of the power supplied from the renewable energy power generation device and the secondary battery as much as possible by executing simple and easy-to-understand control based on real-time power consumption. In addition to the effect of being able to be used, there is an effect that it can be used safely, which is industrially useful.

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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)

Abstract

L'invention concerne un dispositif de stockage d'énergie de type à alimentation en énergie semi-indépendante, permettant d'utiliser l'énergie fournie par un générateur d'énergie renouvelable et une batterie secondaire aussi efficacement que possible. Le dispositif de stockage d'énergie de type à alimentation en énergie semi-indépendante (10) comprend un dispositif de détection de panne de courant (12), une batterie secondaire (14), un premier dispositif de détection de charge (16a), un second dispositif de détection de charge (16b), un premier dispositif de commutation (18a), un second dispositif de commutation (18b) et un dispositif de conversion d'énergie (20). Le premier dispositif de commutation (18a) et le second dispositif de commutation (18b) maintiennent la fourniture de la source d'alimentation en énergie à une première charge (40a) et à une seconde charge (40b) ou commutent ladite source d'alimentation vers une alimentation en énergie commerciale (32) ou la batterie secondaire (14) sur la base des résultats de détection du dispositif de détection de panne de courant (12), du premier dispositif de détection de charge (16a) et du second dispositif de détection de charge (16b). Le premier dispositif de commutation (18a) et le second dispositif de commutation (18b) commutent la source d'alimentation en énergie au sein d'une durée qui est de trois millisecondes ou plus et égale ou inférieure à un cycle de l'onde c.a. de l'alimentation en énergie commerciale (32).
PCT/JP2016/054460 2016-02-16 2016-02-16 Dispositif de stockage d'énergie de type à alimentation en énergie semi-indépendante WO2017141350A1 (fr)

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PCT/JP2016/054460 WO2017141350A1 (fr) 2016-02-16 2016-02-16 Dispositif de stockage d'énergie de type à alimentation en énergie semi-indépendante

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PCT/JP2016/054460 WO2017141350A1 (fr) 2016-02-16 2016-02-16 Dispositif de stockage d'énergie de type à alimentation en énergie semi-indépendante

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022045338A (ja) * 2020-09-08 2022-03-18 株式会社エステック 電力制御装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08223816A (ja) * 1995-02-14 1996-08-30 Nippon Electric Ind Co Ltd 太陽光発電インバータシステムの商用系統電源との切り換え方法
JP2001204138A (ja) * 2000-01-18 2001-07-27 Sekisui Chem Co Ltd 電力供給装置
WO2013046638A1 (fr) * 2011-09-28 2013-04-04 京セラ株式会社 Système de conditionnement de puissance et conditionneur de puissance de batterie de stockage
JP2013116033A (ja) * 2011-11-30 2013-06-10 Toshiba It & Control Systems Corp 電力供給装置
JP2013183612A (ja) * 2012-03-05 2013-09-12 Sanyo Electric Co Ltd 制御装置および配電システム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08223816A (ja) * 1995-02-14 1996-08-30 Nippon Electric Ind Co Ltd 太陽光発電インバータシステムの商用系統電源との切り換え方法
JP2001204138A (ja) * 2000-01-18 2001-07-27 Sekisui Chem Co Ltd 電力供給装置
WO2013046638A1 (fr) * 2011-09-28 2013-04-04 京セラ株式会社 Système de conditionnement de puissance et conditionneur de puissance de batterie de stockage
JP2013116033A (ja) * 2011-11-30 2013-06-10 Toshiba It & Control Systems Corp 電力供給装置
JP2013183612A (ja) * 2012-03-05 2013-09-12 Sanyo Electric Co Ltd 制御装置および配電システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022045338A (ja) * 2020-09-08 2022-03-18 株式会社エステック 電力制御装置

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