WO2017141350A1 - Semi-independent power supply-type power storage device - Google Patents

Semi-independent power supply-type power storage device 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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Prior art keywords
power
load
secondary battery
switching device
detection device
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PCT/JP2016/054460
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French (fr)
Japanese (ja)
Inventor
壽 塚本
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Ｃｏｎｎｅｘｘ Ｓｙｓｔｅｍｓ株式会社
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Priority to PCT/JP2016/054460 priority Critical patent/WO2017141350A1/en
Publication of WO2017141350A1 publication Critical patent/WO2017141350A1/en

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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.

Abstract

Provided is a semi-independent power supply-type power storage device that makes it possible to use power supplied from a renewable energy generator and a secondary battery as efficiently as possible. The semi-independent power supply-type power storage device 10 comprises a power outage 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 a power conversion device 20. The first switching device 18a and the second switching device 18b maintain the supply source of power supplied to each of a first load 40a and a second load 40b or switch said supply source to either a commercial power supply 32 or the secondary battery 14 on the basis of the detection results of the power outage detection device 12, the first load detection device 16a, and the second load detection device 16b. The first switching device 18a and the second switching device 18b switch the supply source of power within an amount of time that is three milliseconds or more and equal to or less than one cycle of the AC wave of the commercial power supply 32.

Description

半独立電源型蓄電装置Semi-independent power storage device
　本発明は、種々の家庭用電気製品に電力を供給するために、再生可能エネルギをできるだけ使用しつつ商用電源も接続できる半独立電源型蓄電装置に関する。 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.
　商用電源から電力の供給を受けると共に、再生可能エネルギ発電システムを設置して発電し、自家消費すると共に売電している企業や家庭が増加している。このような発電システムに二次電池を追加して、例えば昼間太陽光で発電した電力を夜間にも利用したいという要望も増加している。このような電力供給システムが特許文献１に開示されている。 There are an increasing number of companies and households that receive power from commercial power sources, install renewable energy power generation systems, generate electricity, and consume and sell electricity. There is an increasing demand to add a secondary battery to such a power generation system and to use, for example, power generated by daylight sunlight at night. Such a power supply system is disclosed in Patent Document 1.
　特許文献１には、開閉器を非常に短時間の開閉動作が可能な半導体スイッチ回路で構成し、制御部が、商用電源で停電が発生したと判定したタイミングで商用電源とインバータの交流側との間の接続を開閉器で即座に遮断すれば、電力負荷装置に対して、瞬停を発生させること無しにインバータから出力される交流電力を供給し続けることができる電力供給システムが記載されている。 In Patent Document 1, 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.
特許第５７１７１７２号Patent No. 5717172
　特許文献１の電力供給システムは、停電時に開閉器を動作させると、サーバ装置は、商用電源から遮断されて蓄電装置から電力が供給されるようになり、空調装置は、蓄電装置から遮断されて停電が復旧するまで電力が供給されないようになる。 In the power supply system of Patent Document 1, when the switch is operated during a power failure, the server device is disconnected from the commercial power source and supplied with power from the power storage device, and the air conditioner is disconnected from the power storage device. Power will not be supplied until the power is restored.
　しかしながら、停電時以外は、サーバ装置および空調装置に対して商用電源、太陽電池装置および蓄電装置が全て同時に接続されているので、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用するためには、再生可能エネルギ発電装置および二次電池から供給される電力の比率を上げると共に商用電源から供給される電力の比率を下げるような複雑な制御を実行しなければならないという問題があった。また、負荷の消費電力を計測する負荷検出装置を備えていないので、実時間の消費電力に基づいた分かりやすい制御が実行できないという問題があった。さらに、蓄電装置を完全に遮断して商用電源だけから電力を供給することができないので、安全に使用することができないという問題があった。 However, since 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. In order to utilize this, there is a problem that 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. In addition, since 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. Furthermore, since 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.
　本発明は、従来のこのような問題点に鑑みてなされたものであり、本発明の目的は、実時間の消費電力に基づいたシンプルで分かりやすい制御を実行することによって、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することが可能な半独立電源型蓄電装置を提供することにある。
　また、本発明の他の目的は、上記目的に加え、安全に使用することが可能な半独立電源型蓄電装置を提供することにある。 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.
　本発明者は、上記目的を達成するために、鋭意研究を重ねた結果、まず、電力の供給元を二次電池と商用電源との間で切り替えると、テレビ、電灯などの電気製品が一瞬停止し、初期状態にリセットされてしまうこと、その時の切り替え時間が商用電源の交流波の１周期以下である場合には、電気製品の停止やリセットが起こらないこと、その時の切り替え時間が３ミリ秒以上である場合には、スパークが発生することがないので安全に使用することができることを見出した。 As a result of intensive studies to achieve the above object, 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.
　また、本発明者は、特許文献１のサーバ装置に対応する必須負荷および空調装置に対応する一般負荷のそれぞれに負荷検出装置と切替装置とを備え、その負荷検出装置によって計測される実時間の消費電力に基づいて電力の供給元を切り替えるようなシンプルで分かりやすい制御を実行することによって、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができることを見出し、本発明に至ったものである。 Further, 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.
　即ち、本発明は、商用電源に接続され、商用電源の停電を検出する停電検出装置と、再生可能エネルギ発電装置に接続され、再生可能エネルギ発電装置の発電電力を充電し、充電された電力を放電する二次電池と、第１負荷の消費電力を検出する第１負荷検出装置と、第１負荷と異なる第２負荷の消費電力を検出する第２負荷検出装置と、停電検出装置ならびに第１負荷検出装置および第２負荷検出装置の検出結果に基づいて、第１負荷に供給する電力の供給元を商用電源および二次電池のいずれか一方に切り替えるまたは保持する第１切替装置と、停電検出装置ならびに第１負荷検出装置および第２負荷検出装置の検出結果に基づいて、第２負荷に供給する電力の供給元を商用電源および二次電池のいずれか一方に切り替えるまたは保持する第２切替装置と、再生可能エネルギ発電装置の発電電力を変換して二次電池に出力すると共に二次電池から放電された電力を変換して第１切替装置および第２切替装置に出力する電力変換装置と、を有し、第１負荷検出装置は、第１切替装置と第１負荷との間に接続され、第２負荷検出装置は、第２切替装置と第２負荷との間に接続され、第１切替装置および第２切替装置は、３ミリ秒以上かつ商用電源の交流波の１周期以下の時間で電力の供給元を切り替える半独立電源型蓄電装置を提供するものである。 That is, 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, and 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.
　ここで、上記においては、第１切替装置および第２切替装置は、第１負荷検出装置が検出した第１負荷の消費電力と第２負荷検出装置が検出した第２負荷の消費電力との和が電力変換装置の出力能力に基づいて予め設定した条件を上回った場合には、電力の供給元を二次電池から商用電源に切り替えまたは商用電源のまま保持し、第１切替装置は、停電検出装置が停電を検出した場合には、電力の供給元を商用電源から二次電池に切り替えまたは二次電池のまま保持し、第２切替装置は、停電検出装置が停電を検出した場合には、電力の供給元を二次電池から商用電源に切り替えるまたは商用電源のまま保持するのが好ましい。
　第１切替装置および第２切替装置は、二次電池の電圧が放電終止電圧に到達した場合または二次電池が故障した場合には、第１負荷および第２負荷に供給する電力の供給元を二次電池から商用電源に切り替えるまたは商用電源のまま保持するのが好ましい。
　さらに、商用電源の電力を変換して二次電池に出力するＡＣ／ＤＣ変換装置を有するのが好ましい。
　半独立電源型蓄電装置は、第１負荷および第２負荷のいずれとも異なる第３負荷に供給する電力の供給元が常時商用電源になるように構成されるのが好ましい。 Here, in the above, 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. When 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. When the device detects a 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.
　本発明によれば、実時間の消費電力に基づいたシンプルで分かりやすい制御を実行することによって、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができる。
　また、本発明によれば、上記効果に加え、安全に使用することができる。 According to the present invention, by executing simple and easy-to-understand control based on real-time power consumption, 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.
図１は、本発明の半独立電源型蓄電装置を示す回路ブロック図である。FIG. 1 is a circuit block diagram showing a semi-independent power storage device of the present invention.
　以下に、本発明の半独立電源型蓄電装置を添付の図面に示す好適実施形態に基づいて詳細に説明する。図１は、本発明の半独立電源型蓄電装置を示す回路ブロック図である。 Hereinafter, the semi-independent power storage device of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings. FIG. 1 is a circuit block diagram showing a semi-independent power storage device of the present invention.
　本発明の半独立電源型蓄電装置１０は、停電検出装置１２と二次電池１４と第１負荷検出装置１６ａと第２負荷検出装置１６ｂと第１切替装置１８ａと第２切替装置１８ｂと電力変換装置２０とを有する。停電検出装置１２は、商用電源３２に接続され、商用電源３２の停電を検出するものである。停電検出装置１２と商用電源３２との間には、メインブレーカ３４が接続される。二次電池１４は、再生可能エネルギ発電装置３６に接続され、再生可能エネルギ発電装置３６の発電電力を充電し、充電された電力を放電するものである。 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.
　第１負荷検出装置１６ａは、第１負荷４０ａの消費電力を計測するものである。第２負荷検出装置１６ｂは、第１負荷４０ａと異なる第２負荷４０ｂの消費電力を計測するものである。第１切替装置１８ａは、停電検出装置１２ならびに第１負荷検出装置１６ａおよび第２負荷検出装置１６ｂの検出結果に基づいて、第１負荷４０ａに供給する電力の供給元を商用電源３２および二次電池１４のいずれか一方に切り替えるまたは保持するものである。第２切替装置１８ｂは、停電検出装置１２ならびに第１負荷検出装置１６ａおよび第２負荷検出装置１６ｂの検出結果に基づいて、第２負荷４０ｂに供給する電力の供給元を商用電源３２および二次電池１４のいずれか一方に切り替えるまたは保持するものである。 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. Based on the detection results of the power failure detection device 12, the first load detection device 16a, and the second load detection device 16b, 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. Based on the detection results of the power failure detection device 12, the first load detection device 16a, and the second load detection device 16b, 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.
　電力変換装置２０は、ＤＣ／ＤＣ変換装置２０ａとＤＣ／ＡＣ変換装置２０ｂとから成り、ＤＣ／ＤＣ変換装置２０ａは、再生可能エネルギ発電装置３６の発電電力を変換して二次電池１４に出力すると共に二次電池１４から放電された電力を変換するものであり、ＤＣ／ＡＣ変換装置２０ｂは、ＤＣ／ＤＣ変換装置２０ａによって変換された二次電池１４からの放電電力をさらに変換して第１切替装置１８ａおよび第２切替装置１８ｂに出力するものである。第１負荷検出装置１６ａは、第１切替装置１８ａと第１負荷４０ａとの間に接続され、第２負荷検出装置１６ｂは、第２切替装置１８ｂと第２負荷４０ｂとの間に接続される。 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, and the second load detection device 16b is connected between the second switching device 18b and the second load 40b. .
　第１切替装置１８ａおよび第２切替装置１８ｂは、３ミリ秒以上かつ商用電源３２の交流波の１周期以下の時間で電力の供給元を切り替える。この切り替え時間が３ミリ秒未満の場合には、スパークが発生することがあるので安全に使用することができない。また、この切り替え時間が商用電源３２の交流波の１周期超、即ち、５０Ｈｚ時には２０ミリ秒超の場合、６０Ｈｚ時には１６．７ミリ秒超の場合には、電気製品の停止やリセットが起こる割合が著しく高くなる。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができ、しかも安全に使用することができる。 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.
　本発明の半独立電源型蓄電装置１０の第１切替装置１８ａおよび第２切替装置１８ｂは、二次電池１４の電圧が放電終止電圧に到達した場合または二次電池１４が故障した場合には、第１負荷４０ａおよび第２負荷４０ｂに供給する電力の供給元を二次電池１４から商用電源３２に切り替えるまたは商用電源３２のまま保持しても良い。即ち、二次電池１４の充電を要する場合または二次電池１４が故障して交換を要する場合には、第１切替装置１８ａおよび第２切替装置１８ｂを操作することによって、第１負荷４０ａおよび第２負荷４０ｂを二次電池１４から切り離すことができる。その場合には、二次電池１４の電圧、電流、温度を監視することによってこの二次電池１４の故障を検出する。 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. In other words, when the secondary battery 14 needs to be charged or when the secondary battery 14 fails and needs to be replaced, 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.
　本発明の半独立電源型蓄電装置１０は、さらに、第３切替装置２２を有しても良い。第３切替装置２２は、二次電池１４が故障した場合には、第１負荷４０ａおよび第２負荷４０ｂに供給する電力の供給元を二次電池１４から商用電源３２に切り替えるまたは商用電源３２のまま保持するものである。即ち、二次電池１４が故障して交換を要する場合には、第１切替装置１８ａおよび第２切替装置１８ｂを操作する代わりに第３切替装置２２を手動で操作することによって、第１負荷４０ａおよび第２負荷４０ｂを二次電池１４から切り離すことができる。また、二次電池１４の電圧、電流、温度を監視することによってこの二次電池１４の故障を検出できる場合には、第３切替装置２２を自動で操作することもできる。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、安全に使用することができる。 The semi-independent power storage device 10 of the present invention may further include a third switching device 22. When the secondary battery 14 fails, 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.
　本発明の半独立電源型蓄電装置１０は、さらに、ＡＣ／ＤＣ変換装置２４を有しても良い。ＡＣ／ＤＣ変換装置２４は、商用電源３２の電力を変換して二次電池１４に出力するものである。即ち、二次電池１４は、ＡＣ／ＤＣ変換装置２４によって変換された商用電源３２の電力を充電することができる。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができる。 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. By adopting such a configuration, 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.
　本発明の半独立電源型蓄電装置１０は、第３負荷４０ｃに供給する電力の供給元が常時商用電源３２になるように構成されても良い。第３負荷４０ｃは、第１負荷４０ａおよび第２負荷４０ｂのいずれとも異なるものである。即ち、二次電池１４からの放電電力が第３負荷４０ｃに供給されないように構成することができる。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができる。 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. By adopting such a configuration, 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.
　本発明の半独立電源型蓄電装置１０の第１負荷４０ａは、冷蔵庫、自然冷媒ヒートポンプ給湯機、通信機器、最小限の照明、最小限の空調機、最小限のテレビの内の少なくとも１つの電気製品であるのが好ましい。即ち、第１負荷４０ａには、主として二次電池１４から電力が供給されると共に、必要に応じて商用電源３２からも電力が供給され、停電時でも二次電池１４からの電力の供給が継続されるので、停電が復旧するまでの間であっても使用する電気製品が分類される。第１負荷４０ａは、さらに、分電盤の中の漏電ブレーカ４２ａと安全ブレーカ４４ａとを含み、漏電ブレーカ４２ａは、第１負荷検出装置１６ａに接続され、安全ブレーカ４４ａは、漏電ブレーカ４２ａと電気製品との間に接続される。 The first load 40a of the semi-independent power storage device 10 according to the present invention 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.
　また、第２負荷４０ｂは、洗濯機、食器洗い機、掃除機、最小限の照明以外の照明、最小限の空調機以外の空調機、最小限のテレビ以外のテレビの内の少なくとも１つの電気製品であるのが好ましい。即ち、第２負荷４０ｂには、主として二次電池１４から電力が供給されると共に、必要に応じて商用電源３２からも電力が供給され、停電時には二次電池１４からの電力の供給が停止されるので、停電が復旧するまでの間は使用しないで済む電気製品が分類される。第２負荷４０ｂは、さらに、分電盤の中の漏電ブレーカ４２ｂと安全ブレーカ４４ｂとを含み、漏電ブレーカ４２ｂは、第２負荷検出装置１６ｂに接続され、安全ブレーカ４４ｂは、漏電ブレーカ４２ｂと電気製品との間に接続される。 Further, 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. Is preferred. That is, 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.
　さらに、第３負荷４０ｃは、電磁調理器、輻射式暖房機の内の少なくとも１つの電気製品であるのが好ましい。即ち、第３負荷４０ｃには、常時商用電源３２から電力が供給され、停電時でも二次電池１４からの電力の供給ができないので、停電が復旧するまでの間は使用できない電気製品が分類される。第３負荷４０ｃは、さらに、分電盤の中の漏電ブレーカ４２ｃと安全ブレーカ４４ｃとを含み、漏電ブレーカ４２ｃは、停電検出装置１２に接続され、安全ブレーカ４４ｃは、漏電ブレーカ４２ｃと電気製品との間に接続される。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができる。 Furthermore, it is preferable that 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 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. By adopting such a configuration, 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.
　次に、本発明の半独立電源型蓄電装置の切替装置の動作について説明する。
　本発明の半独立電源型蓄電装置１０の第１切替装置１８ａおよび第２切替装置１８ｂは、第１負荷検出装置１６ａが検出した第１負荷４０ａの消費電力と第２負荷検出装置１６ｂが検出した第２負荷４０ｂの消費電力との和が電力変換装置２０の出力能力に基づいて予め設定した条件を上回った場合には、電力の供給元を二次電池１４から商用電源３２に切り替えまたは商用電源３２のまま保持しても良い。例えば、第１負荷４０ａと第２負荷４０ｂの内の１つの電気製品が動作し、その消費電力が予め設定した条件を上回った場合、または第１負荷４０ａと第２負荷４０ｂの内の複数の電気製品が同時に動作し、それらの消費電力の和が予め設定した条件を上回った場合には、二次電池１４からの電力の供給を継続することが困難なので、第１切替装置１８ａおよび第２切替装置１８ｂは、電力の供給元が商用電源３２になるように切り替えるまたは保持する。ここで、電力変換装置２０の出力能力とは、ＤＣ／ＤＣ変換装置２０ａの出力能力およびＤＣ／ＡＣ変換装置２０ｂの出力能力の内の小さい方を指す。 Next, the operation of the switching device for the semi-independent power storage device of the present invention will be described.
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. When the sum of the power consumption of the second load 40b exceeds a preset condition based on the output capability of the power converter 20, 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 | maintain 32. For example, when one electrical product in the first load 40a and the second load 40b operates and its power consumption exceeds a preset condition, or a plurality of the first load 40a and the second load 40b When the electric products operate simultaneously and the sum of their power consumption exceeds a preset condition, it is difficult to continue the supply of power from the secondary battery 14, so the first switching device 18a and the second switching device The switching device 18b performs switching or holding so that the power supply source is the commercial power source 32. Here, 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.
　また、第１切替装置１８ａは、停電検出装置１２が停電を検出した場合には、電力の供給元を商用電源３２から二次電池１４に切り替えまたは二次電池１４のまま保持しても良い。即ち、第１切替装置１８ａは、停電時でも二次電池１４からの電力の供給を継続するように切り替えるまたは保持する。さらに、第２切替装置１８ｂは、停電検出装置１２が停電を検出した場合には、電力の供給元を二次電池１４から商用電源３２に切り替えまたは商用電源３２のまま保持しても良い。即ち、第２切替装置１８ｂは、停電時には二次電池１４からの電力の供給を停止するように切り替えるまたは保持する。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができ、しかも安全に使用することができる。 In addition, when the power failure detection device 12 detects a power failure, 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. Furthermore, when the power failure detection device 12 detects 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. 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.
　上述の予め設定した条件は、電力変換装置２０の連続定格出力電力が２ｋＷである場合、第１負荷４０ａの消費電力と第２負荷４０ｂの消費電力との和が２ｋＷ以上３ｋＷ未満で連続時間が１０分間の時、または３ｋＷ以上で連続時間が２秒間の時であっても良い。即ち、その条件を上回った時には、電力変換装置２０の仕様を超えるので、第１切替装置１８ａおよび第２切替装置１８ｂは、電力の供給元が商用電源３２になるように切り替えるまたは保持する。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、安全に使用することができる。 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.
　本発明の半独立電源型蓄電装置１０の電力変換装置２０の温度が８０℃以上になった場合には、第１切替装置１８ａおよび第２切替装置１８ｂは、電力の供給元を二次電池１４から商用電源３２に切り替えまたは商用電源３２のまま保持しても良い。即ち、そのような時には、電力変換装置２０の仕様を超えるので、第１切替装置１８ａおよび第２切替装置１８ｂは、電力の供給元が商用電源３２になるように切り替えるまたは保持する。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、安全に使用することができる。ここで、電力変換装置２０の温度とは、ＤＣ／ＤＣ変換装置２０ａの温度およびＤＣ／ＡＣ変換装置２０ｂの温度の内の高い方を指す。 When the temperature of the power conversion device 20 of the semi-independent power storage device 10 according to the present invention is 80 ° C. or higher, 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. Here, 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.
　本発明の半独立電源型蓄電装置１０の第１負荷４０ａの消費電力と第２負荷４０ｂの消費電力との和が予め設定した条件以下になり、かつ電力変換装置２０の温度が４０℃以下になり、かつ二次電池１４から商用電源３２に切り替え後２０分以上経過した場合には、第１切替装置１８ａおよび第２切替装置１８ｂは、電力の供給元を商用電源３２から二次電池１４に切り替えても良い。即ち、以下の３条件を満たす場合には、第１切替装置１８ａおよび第２切替装置１８ｂは、電力の供給元が二次電池１４になるように切り替える。 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. And when 20 minutes or more have elapsed after switching from the secondary battery 14 to the commercial power source 32, 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.
　第１条件は、例えば、電力変換装置２０の連続定格出力電力が２ｋＷである場合、第１負荷４０ａの消費電力と第２負荷４０ｂの消費電力との和が２ｋＷ未満になった時、または２ｋＷ以上３ｋＷ未満で連続時間が１０分間未満になった時、または３ｋＷ以上で連続時間が２秒間未満になった時、即ち、電力変換装置２０の仕様以内になった時である。第２条件は、電力変換装置２０の温度が４０℃以下になった時、即ち、電力変換装置２０の仕様以内になった時である。第３条件は、電力の供給元が商用電源３２になるように切り替えた後２０分以上経過した時である。このような構成とすることで、本発明の半独立電源型蓄電装置１０は、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができ、しかも安全に使用することができる。
　本発明の半独立電源型蓄電装置は、基本的に以上のように構成される。 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 When the continuous time is less than 10 minutes at 3 kW or less, or when the continuous time is less than 2 seconds at 3 kW or more, that is, within the specifications of the power converter 20. 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. 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 semi-independent power storage device of the present invention is basically configured as described above.
　以上、本発明の半独立電源型蓄電装置について詳細に説明したが、本発明は上記記載に限定されず、本発明の主旨を逸脱しない範囲において、種々の改良や変更をしても良いのはもちろんである。 Although the semi-independent power storage device of the present invention has been described in detail above, the present invention is not limited to the above description, and various improvements and modifications may be made without departing from the spirit of the present invention. Of course.
　本発明の半独立電源型蓄電装置は、実時間の消費電力に基づいたシンプルで分かりやすい制御を実行することによって、再生可能エネルギ発電装置および二次電池から供給される電力をできるだけ有効活用することができるという効果に加え、安全に使用することができるという効果もあるので、産業上有用である。 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.
　１０　半独立電源型蓄電装置
　１２　停電検出装置
　１４　二次電池
　１６ａ、１６ｂ　負荷検出装置
　１８ａ、１８ｂ、２２　切替装置
　２０　電力変換装置
　２０ａ　ＤＣ／ＤＣ変換装置
　２０ｂ　ＤＣ／ＡＣ変換装置
　２４　ＡＣ／ＤＣ変換装置
　３２　商用電源
　３４　メインブレーカ
　３６　再生可能エネルギ発電装置
　４０ａ、４０ｂ、４０ｃ　負荷
　４２ａ、４２ｂ、４２ｃ　漏電ブレーカ
　４４ａ、４４ｂ、４４ｃ　安全ブレーカ DESCRIPTION OF SYMBOLS 10 Semi-independent power storage device 12 Power failure detection device 14 Secondary battery 16a, 16b Load detection device 18a, 18b, 22 Switching device 20 Power conversion device 20a DC / DC conversion device 20b DC / AC conversion device 24 AC / DC conversion device 32 Commercial power supply 34 Main breaker 36 Renewable energy power generator 40a, 40b, 40c Load 42a, 42b, 42c Earth leakage breaker 44a, 44b, 44c Safety breaker

Claims (5)

  1. 　商用電源に接続され、前記商用電源の停電を検出する停電検出装置と、
    　再生可能エネルギ発電装置に接続され、前記再生可能エネルギ発電装置の発電電力を充電し、充電された電力を放電する二次電池と、
    　第１負荷の消費電力を検出する第１負荷検出装置と、
    　前記第１負荷と異なる第２負荷の消費電力を検出する第２負荷検出装置と、
    　前記停電検出装置ならびに前記第１負荷検出装置および前記第２負荷検出装置の検出結果に基づいて、前記第１負荷に供給する電力の供給元を前記商用電源および前記二次電池のいずれか一方に切り替えるまたは保持する第１切替装置と、
    　前記停電検出装置ならびに前記第１負荷検出装置および前記第２負荷検出装置の検出結果に基づいて、前記第２負荷に供給する電力の供給元を前記商用電源および前記二次電池のいずれか一方に切り替えるまたは保持する第２切替装置と、
    　前記再生可能エネルギ発電装置の発電電力を変換して前記二次電池に出力すると共に前記二次電池から放電された電力を変換して前記第１切替装置および前記第２切替装置に出力する電力変換装置と、を有し、
    　前記第１負荷検出装置は、前記第１切替装置と前記第１負荷との間に接続され、
    　前記第２負荷検出装置は、前記第２切替装置と前記第２負荷との間に接続され、
    　前記第１切替装置および前記第２切替装置は、３ミリ秒以上かつ前記商用電源の交流波の１周期以下の時間で電力の供給元を切り替える半独立電源型蓄電装置。     A power failure detection device that is connected to a commercial power source and detects a power failure of the commercial power source;
    A secondary battery connected to a renewable energy power generator, charging the generated power of the renewable energy power generator, and discharging the charged power;
    A first load detection device for detecting power consumption of the first load;
    A second load detection device for detecting power consumption of a second load different from the first load;
    Based on the detection results of the power failure detection device, the first load detection device, and the second load detection device, the supply source of the power supplied to the first load is either the commercial power source or the secondary battery. A first switching device for switching or holding;
    Based on the detection results of the power failure detection device, the first load detection device, and the second load detection device, the supply source of the power supplied to the second load is either the commercial power source or the secondary battery. A second switching device for switching or holding;
    Power conversion for converting the power generated by the renewable energy power generation device and outputting it to the secondary battery, and for converting the power discharged from the secondary battery to output to the first switching device and the second switching device An apparatus,
    The first load detection device is connected between the first switching device and the first load,
    The second load detection device is connected between the second switching device and the second load,
    The first switching device and the second switching device are semi-independent power storage devices that switch a power supply source in a time of 3 milliseconds or more and one cycle or less of an AC wave of the commercial power supply.
  2. 　前記第１切替装置および前記第２切替装置は、前記第１負荷検出装置が検出した前記第１負荷の消費電力と前記第２負荷検出装置が検出した前記第２負荷の消費電力との和が前記電力変換装置の出力能力に基づいて予め設定した条件を上回った場合には、電力の供給元を前記二次電池から前記商用電源に切り替えまたは前記商用電源のまま保持し、
    　前記第１切替装置は、前記停電検出装置が停電を検出した場合には、電力の供給元を前記商用電源から前記二次電池に切り替えまたは前記二次電池のまま保持し、
    　前記第２切替装置は、前記停電検出装置が停電を検出した場合には、電力の供給元を前記二次電池から前記商用電源に切り替えるまたは前記商用電源のまま保持する請求項１に記載の半独立電源型蓄電装置。     The first switching device and the second switching device have a sum of power consumption of the first load detected by the first load detection device and power consumption of the second load detected by the second load detection device. When the preset condition based on the output capability of the power converter exceeds the condition, the power source is switched from the secondary battery to the commercial power source or held as the commercial power source,
    When the power failure detection device detects a power failure, the first switching device switches the power supply source from the commercial power source to the secondary battery or holds the secondary battery as it is.
    2. The second switching device according to claim 1, wherein when the power failure detection device detects a power failure, the second switching device switches a power supply source from the secondary battery to the commercial power source or holds the commercial power source as it is. Independent power storage device.
  3. 　前記第１切替装置および前記第２切替装置は、前記二次電池の電圧が放電終止電圧に到達した場合または前記二次電池が故障した場合には、前記第１負荷および前記第２負荷に供給する電力の供給元を前記二次電池から前記商用電源に切り替えるまたは前記商用電源のまま保持する請求項１または２に記載の半独立電源型蓄電装置。 The first switching device and the second switching device supply the first load and the second load when the voltage of the secondary battery reaches a discharge end voltage or when the secondary battery fails. 3. The semi-independent power storage device according to claim 1, wherein a power supply source to be switched is switched from the secondary battery to the commercial power source or is maintained as the commercial power source.
  4. 　さらに、前記商用電源の電力を変換して前記二次電池に出力するＡＣ／ＤＣ変換装置を有する請求項１～３のいずれか１項に記載の半独立電源型蓄電装置。 The semi-independent power storage device according to any one of claims 1 to 3, further comprising an AC / DC converter that converts electric power of the commercial power source and outputs the converted power to the secondary battery.
  5. 　前記半独立電源型蓄電装置は、前記第１負荷および前記第２負荷のいずれとも異なる第３負荷に供給する電力の供給元が常時前記商用電源になるように構成される請求項１～４のいずれか１項に記載の半独立電源型蓄電装置。 5. The semi-independent power storage device is configured such that a source of power supplied to a third load different from both the first load and the second load is always the commercial power source. The semi-independent power storage device according to any one of the above.
PCT/JP2016/054460 2016-02-16 2016-02-16 Semi-independent power supply-type power storage device WO2017141350A1 (en)

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