WO2013157729A1 - Grid-connected energy storage system for preventing power from becoming backfed - Google Patents

Grid-connected energy storage system for preventing power from becoming backfed Download PDF

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Publication number
WO2013157729A1
WO2013157729A1 PCT/KR2013/000797 KR2013000797W WO2013157729A1 WO 2013157729 A1 WO2013157729 A1 WO 2013157729A1 KR 2013000797 W KR2013000797 W KR 2013000797W WO 2013157729 A1 WO2013157729 A1 WO 2013157729A1
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power
power storage
load
grid
control
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PCT/KR2013/000797
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French (fr)
Korean (ko)
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구승엽
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주식회사 차후
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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
    • 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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  • the present invention relates to a grid-linked power storage system, and more particularly, to monitor the operating state of a load device, and to control the supply of the generated power provided by the power storage system (ESS) in the system so that the reverse transmission of the system does not occur.
  • the present invention relates to a grid-connected power storage system that prevents grid reverse transmission.
  • the existing independent energy storage system (ESS; Energy Storage System) is a method of storing the electricity of the low-cost late-night electricity is stored in the peak time period.
  • a small capacity power storage type inverter system which is easier to install than the existing independent power storage method and has a great advantage in capacity expansion, etc., is configured as a grid-type power storage system.
  • a shielding shield for preventing leakage of the power generated by the body generator to the system during a power failure may be used.
  • Figure 1 shows a reverse transmission prevention system using a conventional shield.
  • the method of using a shielding shield required installation of the shielding and wiring work for controlling the shielding.
  • the present invention monitors the state of the load in the system and predicts the amount of load power to predict the generation condition of surplus power in advance to control the power supplied from the power storage system to the load in the system, thereby preventing excess power from occurring. It is an object of the present invention to provide a grid-connected power storage system that prevents grid reverse transmission of power to prevent reverse transmission.
  • a grid-linked power storage system including a power storage device consisting of power load devices, which are energy utilization facilities, and a power storage means for supplying power in the system to electricity generated or stored in electricity in connection with a commercial power source (system).
  • Load power monitoring means selectively installed for the high power consumption load device to monitor the operation state, and determine the power storage state of the power storage means, and controls the power storage / power generation operation of the power storage unit according to the set peak time information and the load power
  • a control means for setting an operation condition of the power generation operation of the power storage means according to the operation state information of the load device sensed by the monitoring means so that the power generation control process of the power storage means is performed under the condition that no surplus power is generated. It is characterized by.
  • Load power monitoring means for monitoring the operation state of the load device portion consisting of the load devices, and determine the power storage state of the power storage means, and controls the power storage / power generation operation of the power storage unit according to the set peak time information, and the load power monitoring means Control means for predicting whether or not surplus power is generated according to the detected operation state information of the load device to set an operation condition of the power generation operation of the power storage means so that the power generation control process of the power storage means is performed under the condition that no surplus power is generated. Characterized in that configured to include.
  • FIG. 1 is a view showing a reverse transmission prevention system using a conventional shield.
  • Figure 2 is a block diagram showing the configuration of a grid-tied power storage system for preventing the system reverse transmission of power of the present invention.
  • FIG. 3 is a flowchart showing a power storage control process in the power storage system of the present invention.
  • FIG. 4 is a flowchart for determining the occurrence of surplus power which is an operating condition of a power inverter of a power storage unit in the power storage system of the present invention.
  • FIG. 5 is a flowchart illustrating a process of setting a power inverter operating condition of a power storage unit in the power storage system of the present invention.
  • the load device unit 200 consisting of the power load devices that are the energy utilization facilities of the home and the commercial power (system),
  • Determination of the power storage state of the power storage unit 130 by receiving the power storage state information from the load power monitoring unit 110 and the power storage unit 130 for monitoring the operation state of the load device unit 200 consisting of the load devices And control the power storage / generation operation of the power storage unit 130 according to the set peak time information, and predict the occurrence of surplus power according to the operation state information of the load device unit 200 detected by the load power monitoring unit 110.
  • ESS control unit 120 for controlling the power generation operation of the power storage unit 130, and operates under the control of the ESS control unit 120 to generate power to the system power and stored in the load unit connected in the system Is configured to include a power storage unit 130 provided to 200,
  • the power storage unit 130 is a charging unit 131 for charging the system power to the battery 132, the battery 132 which is a power storage means, and the electric power charged in the battery 132 to generate a load device unit in the system (
  • the power inverter 133 to be supplied to the 200 and the state of charge of the battery 132 are monitored to provide power storage state information to the ESS controller 120, and under the control of the ESS controller 120, It includes a power storage control unit 134 for controlling the power inverter 133 to charge the system power supply and supply the power stored in the battery 132 to the system.
  • the system-linked power storage system for preventing the system reverse transmission of the power of the present invention is characterized by controlling the power storage unit so that surplus power does not occur, that is, do not supply the stored power under surplus power conditions.
  • the grid-connected power storage system 100 is installed in connection with the grid, such as a load device 200 connected to a commercial power source (system).
  • the load device unit 200 is composed of a basic load device 210 is made of the power consumption is configured in the house, and will be described including an air conditioner (air conditioner) 220, a lot of power consumption.
  • air conditioner air conditioner
  • the grid-connected power storage system 100 includes a power storage unit 130 connected to the grid for power generation or supplying power to the grid, or a power storage unit 130, and control means for controlling the power storage unit 130.
  • the control means includes a load power monitoring unit 110 for monitoring the operating state of the load device unit 200, ESS control unit 120 for controlling the power storage / power generation of the power storage unit 130.
  • the load power monitoring unit 110 is a means for monitoring the operation state of the load device 210 and the air conditioner 220 of the load device unit 200, the amount of current supplied to the load device, or power on / off information Various sensors to monitor can be configured to monitor the operation of the load device.
  • the load power monitoring unit 110 is installed in each load monitoring device 210 and the air conditioner 220, the ESS control unit 120 may be configured through a wired or wireless network communication means.
  • the ESS controller 120 receives an operation state of the load device unit 200 and power storage information provided from the power storage unit 130 according to the load monitoring information provided through the load power monitoring unit 110. Predicting the surplus power generation according to the state determination process means for determining the operation, the operating state of the load device unit 200, the power storage unit 130 according to the power storage state of the power storage unit 130, the registered peak time information It includes a power storage control process means for controlling the power storage / power generation.
  • the prediction of surplus power generation includes: calculating a predicted instantaneous power of the load; comparing the predicted instantaneous power of the load with the set instantaneous power of the power storage unit 130; As a result, when the instantaneous power of the power storage unit 130 is larger than the predicted instantaneous power of the load, it is determined that surplus power is generated. When the instantaneous power of the power storage unit 130 is smaller than the predicted instantaneous power of the load, the surplus power does not occur. And a determination step of predicting that the prediction is made.
  • the power generation control process means, when it is predicted that surplus power is generated as a result of the determination in the determination step, sets the power generation impossible condition to control generation of power under no conditions, and does not generate surplus power as a result of the determination in the determination step. If it is predicted, the power generation control process is provided, including the step of setting power generation conditions to control power generation of the power storage means at a predetermined level or at a peak time.
  • the instantaneous power of the power storage unit 130 is information registered as information indicating the maximum amount of power that can be supplied to the system from the power storage unit 130 by the capacity of the power inverter 133 of the power storage unit 130.
  • the power storage unit 130 includes a charging unit 131, a battery 132, a power inverter 133, and a power storage control unit 134.
  • the charging unit 131 is a means for charging the system power to the battery 132.
  • the battery 132 is a power storage means.
  • the power inverter 133 is a means for converting the electric power stored in the battery 132 to supply to the system.
  • the power storage control unit 134 controls power storage / power generation by controlling the charging unit 131 and the power inverter 133 according to the control information of the ESS control unit 120, and the power storage information of the battery 132 is stored in the ESS control unit 120. ) Means to provide.
  • the power storage unit 130 connected to the system is to supply the system power to the power storage or the charged power of the battery 132 to the system under the control of the ESS control unit 120.
  • the load power monitoring unit 110 provides the operation state of the load device unit 200 to the ESS control unit 120, the ESS control unit 120 receives the operation information of the load device unit 200, the load device unit ( The power storage control information is provided to the power storage control unit 134 using the operation state of the 200 and the peak time information information and the late night power time information.
  • the power storage control unit 134 controls the charging unit 131 according to the power storage control information provided to charge the system power to the battery 132.
  • Figure 3 is a flow chart showing a power storage control process in the power storage system of the present invention.
  • the system power is stored in a state in which the load device unit 200 does not operate (idle state) or a midnight power time on the time zone except for the peak time.
  • the ESS control unit 120 calculates the estimated instantaneous power of the load according to the operating state of the load device unit 200 provided to the load power monitoring unit 110.
  • the estimated instantaneous power of the load is the estimated power amount for the load device 210 and the air conditioner 220 of the load device unit 200.
  • the estimated power amount is the basic power amount and power for the basic load devices such as the load device 210. It can be obtained by adding the load power amount of the air conditioner 220 that consumes a lot.
  • load devices without power consumption change and load devices with high power consumption are distinguished, and power consumption information of load devices with high power consumption is set and registered, and the estimated power amount can be calculated according to the operation of these load devices. I would have to.
  • the ESS control unit 120 information about the basic power amount and the load power amount of the air conditioner 220 is pre-registered.
  • the ESS controller 120 may calculate the predicted instantaneous power of the load according to the operation state information of the load device 200.
  • FIG. 4 is a flowchart for determining the generation of surplus power which is an operating condition of the inverter in the present invention.
  • the ESS controller 120 calculates the predicted instantaneous power of the load, and predicts whether or not surplus power is generated in comparison with the instantaneous power of the pre-registered power storage unit 130, that is, the capacity of the power inverter 133. .
  • the power storage control unit may not operate the power inverter 133 regardless of the remaining charge of the battery 132 and the peak time time. 134) provides power generation control information.
  • the power storage control unit 134 does not operate the power inverter 134.
  • the ESS controller 120 may provide a battery provided from the power storage unit 130 as shown in FIG. 4.
  • the amount of charge of the battery 132 is determined to be higher than or equal to a predetermined level, power generation control information is generated and provided to the power storage control unit 134 so that the power inverter 133 can be operated only during peak times.
  • the power storage unit 130 and the ESS control unit 120 or the load power monitoring unit 110 may be integrally formed, and may be configured as a separate device.
  • the predicted load power or load consumption of the load device is predicted whether the excess power generation according to the operation of the load device with a large load target, and the power inverter 133 operates only under the condition that the excess power does not occur By making it possible, reverse transmission of power to the commercial power source (system) can be prevented.
  • the control means for controlling the operating conditions of the power inverter 133 of the power storage unit 130 by determining whether the surplus power is generated according to the operation.
  • the amount of surplus power may be calculated by actually monitoring the amount of power of the load to control the operating conditions of the power inverter.
  • FIG. 6 illustrates another embodiment in which the power inverter is controlled by monitoring the amount of load power according to the present invention.
  • the load device unit 200 consisting of the power load devices that are the energy utilization facilities of the home and the commercial power (system),
  • a power meter 300 for measuring the power consumption of the load device 200 configured as the load devices is installed, and receives the measured power information from the power meter 300 to convert the power consumption into real-time power consumption to the ESS.
  • the load power monitoring unit 110 ′ provided to the control unit 120 and the power storage state information are received from the power storage unit 130 to determine the power storage state of the power storage unit 130, and according to the set peak time information.
  • ESS control unit 120 for controlling the power generation operation of the power storage unit 130 and predicted to operate under the control of the ESS control unit 120 to generate power to the system power and stored in the system connected to Load device part 200 It is configured to include a power storage unit 130 is provided.
  • the electricity meter 300 is installed to actually measure the power consumption of the load device 200, and by using the measured information to determine whether the surplus power generation to control the power generation conditions It can be seen that.
  • a means for estimating real-time load power should be configured.
  • 110 ' is configured as a real-time load power calculation process means for calculating the power consumption measured from the electricity meter 300 in real time load power.
  • the computational prediction of the real-time load power may predict the real-time load power by calculating the average of the power consumption measured for the set time.
  • the load device when the power storage unit 130 is lowered to a predetermined power or lower, if the load device continuously consumes power, the load device is forced to limit its operation (pause). It can be configured to be.
  • the ESS control unit 120 further comprises a load device operation control means for controlling the operation of each load device 210, the air conditioner 220.
  • the load device operation control means receives the power storage power information from the power storage unit 130 and compares with the reference power information preset to control the load device with respect to the power storage power, and determines the power storage energy shortage state, and the load device unit ( 200 means for limiting the operation of the apparatus.

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Abstract

The present invention relates to a grid-connected energy storage system and, more particularly, to a grid-connected energy storage system that monitors the operating state of a load device, controls a general output supply to the inside of a grid in an energy storage system (ESS) so as not to cause backfeed, and prevents the backfeed of power.

Description

전력의 계통 역전송을 방지하는 계통 연계형 축전시스템Grid-connected power storage system that prevents grid reverse transmission
본 발명은 계통 연계형 축전 시스템에 관한 것으로, 더 상세하게는 부하장치의 동작상태를 감시하여 계통 역전송이 발생하지 않도록 축전시스템(ESS)에서 계통 내 제공하는 발전전력을 공급을 제어하기 위한 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템에 관한 것이다. The present invention relates to a grid-linked power storage system, and more particularly, to monitor the operating state of a load device, and to control the supply of the generated power provided by the power storage system (ESS) in the system so that the reverse transmission of the system does not occur. The present invention relates to a grid-connected power storage system that prevents grid reverse transmission.
일반적으로 기존의 독립형 축전시스템(ESS ; Energy Storage System)은 비교적 요금이 저렴한 심야전력의 전기를 저장하여 두었다가 피크시간대에 활용하는 방식이다.In general, the existing independent energy storage system (ESS; Energy Storage System) is a method of storing the electricity of the low-cost late-night electricity is stored in the peak time period.
근래에는 기존 독립형 축전방식에 비해 설치가 용이하고 용량 증설 등에서 매우 큰 장점을 갖는 소용량 축전방식의 인버터시스템을 계통 연계형 축전시스템으로 구성한다.Recently, a small capacity power storage type inverter system, which is easier to install than the existing independent power storage method and has a great advantage in capacity expansion, etc., is configured as a grid-type power storage system.
그러나 이와 같은 계통 연계형 축전시스템은 요금이 저렴한 심야의 전력을 축전하여 피크시간대에 저렴한 요금의 심야전력을 저장한 후에 피크시간대에 역전송하여 재 판매하게 되는 치명적인 문제점이 발생할 수 있다.However, such a grid-tied power storage system may cause a fatal problem of accumulating low-cost late-night power, storing low-priced late-night power at peak hours, and then retransmitting it for resale at peak times.
따라서 계통에 축전방식의 인버터를 접속하는 경우 전력공급업자(한국전력) 전력요금정책에 따라 계통 역전송을 방지할 기술이 반드시 필요하다.Therefore, when connecting a power storage type inverter to the grid, a technology for preventing reverse transmission of the grid is necessary according to the electricity supplier (KEPCO) electricity tariff policy.
계통 역전송을 방지하는 방법으로는 정전시 차체 발전기의 생산전력을 계통으로 누수 되는 것을 방지하는 차단용 차폐기를 이용할 수 있다.As a method to prevent the reverse transmission of the system, a shielding shield for preventing leakage of the power generated by the body generator to the system during a power failure may be used.
도 1은 종래 차폐기를 이용한 역전송 방지시스템을 나타낸다.Figure 1 shows a reverse transmission prevention system using a conventional shield.
도 1에 도시된 바와 같이, 정전상태에서 발전기를 가동시키면 상용전원(계통)으로 전력이 역전송 될 수 있는 바, 이를 차폐기에서 차단하게 된다. As shown in FIG. 1, when the generator is operated in a power failure state, power may be reversely transmitted to a commercial power source (system), thereby blocking the shield.
그러나 차단용 차폐기를 이용하는 방법은 차폐기 설치가 필요하고 차폐기의 제어를 위한 배선 공사가 요구되었다. However, the method of using a shielding shield required installation of the shielding and wiring work for controlling the shielding.
한편, 이러한 종래 기술에 대한 내용은 실용신안공개번호 20-1999-0018026호, 특허출원번호 10-2010-008491호, 한국등록특허 10-1119927호, 한국등록특허 10-0233981호 등에 자세히 개시되어 있으므로 자세한 설명은 생략하도록 한다. On the other hand, the contents of the prior art are disclosed in detail, such as Utility Model Publication No. 20-1999-0018026, Patent Application No. 10-2010-008491, Korean Patent No. 10-1119927, Korean Patent No. 10-0233981 Detailed description will be omitted.
본 발명은 계통 내 부하의 상태를 감시 및 부하전력량을 예측하여 잉여 전력의 발생조건을 미리 예측하여 축전 시스템으로 부터 계통 내 부하에 공급되는 전력을 제어함으로써, 잉여전력이 발생하지 않도록 하여 계통(상용전원)으로 역전송이 이루어지지 않도록 한 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템을 제공하고자 한 것이다. The present invention monitors the state of the load in the system and predicts the amount of load power to predict the generation condition of surplus power in advance to control the power supplied from the power storage system to the load in the system, thereby preventing excess power from occurring. It is an object of the present invention to provide a grid-connected power storage system that prevents grid reverse transmission of power to prevent reverse transmission.
본 발명 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템은,The system-linked power storage system for preventing the system reverse transmission of the present invention,
에너지 활용설비인 전력 부하장치들로 구성되는 부하장치부와 상용전원(계통)에 연계하여 계통 내 전력을 축전 또는 축전된 전력을 발전 시켜 계통 내 공급하는 축전수단을 포함하는 계통 연계 축전시스템에 있어서, In a grid-linked power storage system including a power storage device consisting of power load devices, which are energy utilization facilities, and a power storage means for supplying power in the system to electricity generated or stored in electricity in connection with a commercial power source (system). ,
고 소비전력 부하장치를 대상으로 선택적으로 설치되어 동작상태를 감시하는 부하전력감시수단과, 상기 축전수단의 축전 상태를 판단하고 설정된 피크시간정보에 따라서 축전부의 축전/발전 동작을 제어하며 상기 부하전력감시수단으로 부터 감지된 부하장치의 동작상태 정보에 따라서 상기 축전수단의 발전 동작의 동작조건을 설정하여 잉여전력이 발생하지 않는 조건 상에서 축전수단의 발전 제어과정이 이루어지도록 하는 제어수단을 포함하여 구성된 것을 특징으로 한다.Load power monitoring means selectively installed for the high power consumption load device to monitor the operation state, and determine the power storage state of the power storage means, and controls the power storage / power generation operation of the power storage unit according to the set peak time information and the load power And a control means for setting an operation condition of the power generation operation of the power storage means according to the operation state information of the load device sensed by the monitoring means so that the power generation control process of the power storage means is performed under the condition that no surplus power is generated. It is characterized by.
그리고 본 발명 계통 연계형 축전시스템은, And system grid-type power storage system of the present invention,
부하장치들로 구성되는 부하장치부의 동작상태를 감시하는 부하전력감시수단과, 상기 축전수단의 축전 상태를 판단하고 설정된 피크시간정보에 따라서 축전부의 축전/발전 동작을 제어하며 상기 부하전력감시수단으로 부터 감지된 부하장치부의 동작상태 정보에 따라서 잉여전력 발생여부를 예측하여 상기 축전수단의 발전 동작의 동작조건을 설정하여 잉여전력이 발생하지 않는 조건 상에서 축전수단의 발전 제어과정이 이루어지도록 하는 제어수단을 포함하여 구성된 것을 특징으로 한다. Load power monitoring means for monitoring the operation state of the load device portion consisting of the load devices, and determine the power storage state of the power storage means, and controls the power storage / power generation operation of the power storage unit according to the set peak time information, and the load power monitoring means Control means for predicting whether or not surplus power is generated according to the detected operation state information of the load device to set an operation condition of the power generation operation of the power storage means so that the power generation control process of the power storage means is performed under the condition that no surplus power is generated. Characterized in that configured to include.
이와 같은 본 발명에 따르면 역전송을 차단하기 위한 차단용 차폐기를 설치하지 않아도 되며, 계통 연계형 축전시스템에서 비교적 간단한 프로세스 수단을 추가하여 계통 전력의 역전송을 방지할 수 있다. According to the present invention as described above, it is not necessary to install a shielding shield for blocking the reverse transmission, and the reverse transmission of the system power can be prevented by adding a relatively simple process means in the grid-based power storage system.
도 1은 종래 차폐기를 이용한 역전송 방지시스템을 나타낸 도면.1 is a view showing a reverse transmission prevention system using a conventional shield.
도 2는 본 발명 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템의 구성을 나타낸 블록도.Figure 2 is a block diagram showing the configuration of a grid-tied power storage system for preventing the system reverse transmission of power of the present invention.
도 3은 본 발명 축전시스템에 있어서, 축전제어과정을 나타낸 플로우챠트.3 is a flowchart showing a power storage control process in the power storage system of the present invention.
도 4는 본 발명 축전시스템에 있어서, 축전부의 전력인버터의 가동조건인 잉여전력발생을 판단하기 위한 플로우챠트.4 is a flowchart for determining the occurrence of surplus power which is an operating condition of a power inverter of a power storage unit in the power storage system of the present invention.
도 5는 본 발명 축전시스템에 있어서, 축전부의 전력인버터 가동조건 설정과정을 나타낸 플로우챠트.5 is a flowchart illustrating a process of setting a power inverter operating condition of a power storage unit in the power storage system of the present invention.
본 발명 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템을 첨부된 도면 도 2 내지 도 5에 도시된 실시 예를 참조하여 그 구성 및 작용을 설명하면 다음과 같다.With reference to the embodiment shown in Figures 2 to 5 attached to the grid-based power storage system to prevent the system reverse transmission of power of the present invention will be described as follows.
댁내 에너지 활용설비인 전력 부하장치들로 구성되는 부하장치부(200)와 상용전원(계통)에 연계하여 설계되는 계통 연계 축전시스템(100)에 있어서, In the grid-connected power storage system 100 is designed in connection with the load device unit 200 consisting of the power load devices that are the energy utilization facilities of the home and the commercial power (system),
부하장치들로 구성되는 부하장치부(200)의 동작상태를 감시하는 부하전력감시부(110)와, 축전부(130)로 부터 축전 상태정보를 제공받아 축전부(130)의 축전상태를 판단하고 설정된 피크시간정보에 따라서 축전부(130)의 축전/발전 동작을 제어하며 상기 부하전력감시부(110)로 부터 감지된 부하장치부(200)의 동작상태 정보에 따라서 잉여전력 발생여부를 예측하여 상기 축전부(130)의 발전 동작을 제어하는 ESS제어부(120)와, ESS제어부(120)의 제어에 따라서 동작하여 계통 전원을 축전 및 축전되어 있는 전력을 발전시켜 계통 내 연계된 부하장치부(200)에 제공하는 축전부(130)를 포함하여 구성되며, Determination of the power storage state of the power storage unit 130 by receiving the power storage state information from the load power monitoring unit 110 and the power storage unit 130 for monitoring the operation state of the load device unit 200 consisting of the load devices And control the power storage / generation operation of the power storage unit 130 according to the set peak time information, and predict the occurrence of surplus power according to the operation state information of the load device unit 200 detected by the load power monitoring unit 110. ESS control unit 120 for controlling the power generation operation of the power storage unit 130, and operates under the control of the ESS control unit 120 to generate power to the system power and stored in the load unit connected in the system Is configured to include a power storage unit 130 provided to 200,
상기 축전부(130)는 계통 전원을 배터리(132)에 충전하는 충전부(131)와, 전력저장수단인 배터리(132)와, 배터리(132)에 충전된 전력을 발전시켜 계통 내 부하장치부(200)에 공급하는 전력인버터(133)와, 상기 배터리(132)의 충전 상태를 감시하여 축전상태정보를 ESS제어부(120)로 제공하며 ESS제어부(120)의 제어에 따라서 상기 충전부(131)와 전력인버터(133)를 제어하여 계통 전원을 충전 및 배터리(132)의 축전된 전력을 계통에 공급 제어하는 축전제어부(134)를 포함하여 구성된다. The power storage unit 130 is a charging unit 131 for charging the system power to the battery 132, the battery 132 which is a power storage means, and the electric power charged in the battery 132 to generate a load device unit in the system ( The power inverter 133 to be supplied to the 200 and the state of charge of the battery 132 are monitored to provide power storage state information to the ESS controller 120, and under the control of the ESS controller 120, It includes a power storage control unit 134 for controlling the power inverter 133 to charge the system power supply and supply the power stored in the battery 132 to the system.
이와 같은 본 발명 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템은 잉여전력이 발생하지 않도록 축전부를 제어 즉, 축전된 전력을 잉여전력조건에서는 공급하지 않도록 하는 것을 그 기술적 특징으로 한다.The system-linked power storage system for preventing the system reverse transmission of the power of the present invention is characterized by controlling the power storage unit so that surplus power does not occur, that is, do not supply the stored power under surplus power conditions.
상기 계통 연계 축전시스템(100)은 상용전원(계통)에 연결된 부하장치부(200)와 같이 계통에 연계하여 설치 구성된다. The grid-connected power storage system 100 is installed in connection with the grid, such as a load device 200 connected to a commercial power source (system).
상기 부하장치부(200)는 댁내 구성되는 전력소모가 이루어지는 기본적인 부하장치(210)로 구성되며, 대표적으로 전력소모가 많은 공조기(에어콘)(220)를 포함하여 설명한다. The load device unit 200 is composed of a basic load device 210 is made of the power consumption is configured in the house, and will be described including an air conditioner (air conditioner) 220, a lot of power consumption.
상기 계통 연계 축전시스템(100)은 계통과 연결되어 계통 전력을 축전 또는 축전된 전력을 계통에 발전 공급하는 축전부(130)와, 축전부(130)를 제어하기 위한 제어수단을 포함한다. The grid-connected power storage system 100 includes a power storage unit 130 connected to the grid for power generation or supplying power to the grid, or a power storage unit 130, and control means for controlling the power storage unit 130.
상기 제어수단은 부하장치부(200)의 동작상태를 감시하는 부하전력감시부(110), 축전부(130)의 축전/발전을 제어하는 ESS제어부(120)를 포함한다. The control means includes a load power monitoring unit 110 for monitoring the operating state of the load device unit 200, ESS control unit 120 for controlling the power storage / power generation of the power storage unit 130.
상기 부하전력감시부(110)는 부하장치부(200)의 부하장치(210), 공조기(220)들의 동작 상태를 감시하기 위한 수단으로, 부하장치로 공급되는 전류량, 또는 전원 온/오프 정보를 감시하는 다양한 센서를 구성하여 해당 부하장치의 동작을 감시할 수 있다.The load power monitoring unit 110 is a means for monitoring the operation state of the load device 210 and the air conditioner 220 of the load device unit 200, the amount of current supplied to the load device, or power on / off information Various sensors to monitor can be configured to monitor the operation of the load device.
상기 부하전력감시부(110)는 각 감시대상 부하장치(210), 공조기(220)에 설치되고, ESS제어부(120)는 유무선 네트워크 통신수단을 통하여 구성될 수 있다.The load power monitoring unit 110 is installed in each load monitoring device 210 and the air conditioner 220, the ESS control unit 120 may be configured through a wired or wireless network communication means.
상기 ESS제어부(120)는 상기 부하전력감시부(110)를 통해 제공된 부하감시정보에 따라서 부하장치부(200)의 동작상태 및 상기 축전부(130)로 부터 제공되는 축전정보를 제공받아 축전상태를 판단하는 상태판단프로세스수단과, 상기 부하장치부(200)의 동작상태에 따른 잉여전력발생을 예측하고, 축전부(130)의 축전상태, 등록된 피크타임정보에 따라서 상기 축전부(130)의 축전/발전을 제어하는 축발전 제어프로세스수단을 포함하여 구성된다.The ESS controller 120 receives an operation state of the load device unit 200 and power storage information provided from the power storage unit 130 according to the load monitoring information provided through the load power monitoring unit 110. Predicting the surplus power generation according to the state determination process means for determining the operation, the operating state of the load device unit 200, the power storage unit 130 according to the power storage state of the power storage unit 130, the registered peak time information It includes a power storage control process means for controlling the power storage / power generation.
상기 축발전 제어프로세스수단은 잉여전력발생의 예측은, 부하의 예측 순간전력을 연산하는 단계와, 부하의 예측순간전력을 설정된 축전부(130)의 순간전력과 비교하는 단계와, 상기 단계에서 비교결과 축전부(130)의 순간전력이 부하의 예측순간전력보다 큰 경우 잉여전력이 발생한다고 예측 판단하고, 축전부(130)의 순간전력이 부하의 예측순간전력보다 작은 경우 잉여전력이 발생하지 않는 다고 예측판단하는 판단단계를 포함하여 이루어진다.In the power generation control process means, the prediction of surplus power generation includes: calculating a predicted instantaneous power of the load; comparing the predicted instantaneous power of the load with the set instantaneous power of the power storage unit 130; As a result, when the instantaneous power of the power storage unit 130 is larger than the predicted instantaneous power of the load, it is determined that surplus power is generated. When the instantaneous power of the power storage unit 130 is smaller than the predicted instantaneous power of the load, the surplus power does not occur. And a determination step of predicting that the prediction is made.
또한 축발전 제어프로세스수단은 상기 판단단계의 판단결과 잉여전력이 발생한다고 예측된 경우 발전불가능조건으로 설정하여 어떠한 조건상에서도 발전이 이루어지지 않도록 제어하고, 상기 판단단계의 판단결과 잉여전력이 발생하지 않는다고 예측된 경우에는 발전가능조건으로 설정하여 축전수단의 축전전력량이 정해진 레벨이상 또는 피크시간에 발전 제어하는 단계를 포함하여 발전 제어프로세스를 제공한다.In addition, the power generation control process means, when it is predicted that surplus power is generated as a result of the determination in the determination step, sets the power generation impossible condition to control generation of power under no conditions, and does not generate surplus power as a result of the determination in the determination step. If it is predicted, the power generation control process is provided, including the step of setting power generation conditions to control power generation of the power storage means at a predetermined level or at a peak time.
상기 축전부(130)의 순간전력은 상기 축전부(130)의 전력인버터(133) 용량으로 축전부(130)에서 계통에 공급할 수 있는 최대 전력량을 나타내는 정보로 기 등록된 정보이다. The instantaneous power of the power storage unit 130 is information registered as information indicating the maximum amount of power that can be supplied to the system from the power storage unit 130 by the capacity of the power inverter 133 of the power storage unit 130.
상기 축전부(130)는 충전부(131), 배터리(132), 전력인버터(133), 축전제어부(134)를 포함한다. The power storage unit 130 includes a charging unit 131, a battery 132, a power inverter 133, and a power storage control unit 134.
상기 충전부(131)는 계통 전력을 배터리(132)에 충전시키기 위한 수단이다.The charging unit 131 is a means for charging the system power to the battery 132.
상기 배터리(132)는 전력저장수단이다.The battery 132 is a power storage means.
상기 전력인버터(133)는 배터리(132)에 축전된 전력을 변환하여 계통에 공급하기 위한 수단이다. The power inverter 133 is a means for converting the electric power stored in the battery 132 to supply to the system.
상기 축전제어부(134)는 ESS제어부(120)의 제어정보에 따라서 상기 충전부(131), 전력인버터(133)를 제어하여 축전/발전을 제어하며, 배터리(132)의 축전정보를 ESS제어부(120)로 제공하는 수단이다.The power storage control unit 134 controls power storage / power generation by controlling the charging unit 131 and the power inverter 133 according to the control information of the ESS control unit 120, and the power storage information of the battery 132 is stored in the ESS control unit 120. ) Means to provide.
이와 같은 구성을 갖는 본 발명 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템의 동작 과정을 설명하면 다음과 같다.Referring to the operation of the grid-connected power storage system for preventing the reverse transmission of the power of the present invention having such a configuration as follows.
계통에 연결된 축전부(130)는 ESS제어부(120)의 제어에 따라서 계통 전력을 축전 또는 배터리(132)의 충전된 전력을 계통에 공급하게 된다. The power storage unit 130 connected to the system is to supply the system power to the power storage or the charged power of the battery 132 to the system under the control of the ESS control unit 120.
부하전력감시부(110)에서는 부하장치부(200)의 동작 상태를 ESS제어부(120)로 제공하고, ESS제어부(120)에서는 부하장치부(200)의 동작정보를 제공받고, 부하장치부(200)의 동작상태 및 피크 타임정보 정보, 심야전력시간정보를 이용하여 축전제어정보를 축전제어부(134)로 제공한다. The load power monitoring unit 110 provides the operation state of the load device unit 200 to the ESS control unit 120, the ESS control unit 120 receives the operation information of the load device unit 200, the load device unit ( The power storage control information is provided to the power storage control unit 134 using the operation state of the 200 and the peak time information information and the late night power time information.
상기 축전제어부(134)에서는 제공된 축전제어정보에 따라서 충전부(131)를 제어하여 배터리(132)에 계통 전력을 충전시킨다.The power storage control unit 134 controls the charging unit 131 according to the power storage control information provided to charge the system power to the battery 132.
도 3은 본 발명 축전시스템에 있어서 축전 제어과정을 나타낸 플로우챠트.Figure 3 is a flow chart showing a power storage control process in the power storage system of the present invention.
즉, 피크타임을 제외한 시간대 상에서 부하장치부(200)의 가 동작하지 않는 상태(유휴상태) 또는 심야전력시간에 계통 전력을 축전한다. That is, the system power is stored in a state in which the load device unit 200 does not operate (idle state) or a midnight power time on the time zone except for the peak time.
한편, ESS제어부(120)에서는 상기 부하전력감시부(110)에 제공된 부하장치부(200)의 동작상태에 따라서 부하의 예측순간전력을 연산한다. On the other hand, the ESS control unit 120 calculates the estimated instantaneous power of the load according to the operating state of the load device unit 200 provided to the load power monitoring unit 110.
부하의 예측순간전력은 부하장치부(200)의 부하장치(210)와 공조기(220)에 대한 예측 전력량인 바, 예측 전력량은 부하장치(210)와 같은 기본 부하장치들에 대한 기본전력량과 전력소모가 큰 공조기(220)의 부하전력량을 더하여 구할 수 있다.The estimated instantaneous power of the load is the estimated power amount for the load device 210 and the air conditioner 220 of the load device unit 200. The estimated power amount is the basic power amount and power for the basic load devices such as the load device 210. It can be obtained by adding the load power amount of the air conditioner 220 that consumes a lot.
즉, 전력소모 변화가 없는 부하장치들과 전력소모가 큰 부하장치를 구분하고 전력소모가 큰 부하장치들의 전력소모정보를 설정 등록 해두고, 이들의 부하장치의 동작여부에 따라서 예측 전력량을 산출할 수 있도록 한 것이다. In other words, load devices without power consumption change and load devices with high power consumption are distinguished, and power consumption information of load devices with high power consumption is set and registered, and the estimated power amount can be calculated according to the operation of these load devices. I would have to.
이는 기본전력량은 변화가 없음으로 공조기(220)의 동작여부에 따라서 정해진 공조기(220)의 전력량을 예측할 수 있다.It is possible to predict the amount of power of the air conditioner 220 according to the operation of the air conditioner 220 since the basic power amount is not changed.
즉, ESS제어부(120) 내에는 기본전력량과 공조기(220)의 부하전력량에 대한 정보가 기 설정 등록 되어 있다.That is, in the ESS control unit 120, information about the basic power amount and the load power amount of the air conditioner 220 is pre-registered.
따라서 ESS제어부(120)에서는 부하장치부(200)의 동작상태정보에 따라서 부하의 예측순간전력을 계산할 수 있다. Accordingly, the ESS controller 120 may calculate the predicted instantaneous power of the load according to the operation state information of the load device 200.
도 4는 본 발명에 있어서 인버터의 가동조건인 잉여전력발생을 판단하기 위한 플로우챠트이다. 4 is a flowchart for determining the generation of surplus power which is an operating condition of the inverter in the present invention.
상기와 같이 ESS제어부(120)에서는 부하의 예측순간전력을 연산하게 되고, 기 등록된 축전부(130)의 순간전력 즉, 전력인버터(133)의 용량과 대비하여 잉영전력의 발생여부를 예측한다. As described above, the ESS controller 120 calculates the predicted instantaneous power of the load, and predicts whether or not surplus power is generated in comparison with the instantaneous power of the pre-registered power storage unit 130, that is, the capacity of the power inverter 133. .
상기 축전부(130)의 순간전력이 부하의 예측순간전력보다 크게 되면, 잉여전력이 발생하게 되고, 축전부(130)의 순간전력이 부하의 예측순간전력보다 작으면 잉여전력이 발생하지 않는 것으로 판단하여 전력인버터(133)의 가동조건을 설정하게 된다. When the instantaneous power of the power storage unit 130 is greater than the predicted instantaneous power of the load, surplus power is generated. When the instantaneous power of the power storage unit 130 is smaller than the predicted instantaneous power of the load, surplus power does not occur. By judging, the operating conditions of the power inverter 133 are set.
상기에서 잉여전력이 발생하는 것으로 전력인버터(133)의 가동조건이 가동불가로 설정되어지면, 배터리(132)의 충전잔량 및 피크시간 타임과 상관없이 전력인버터(133)를 가동시키지 않도록 축전제어부(134)로 발전 제어정보를 제공한다.When the operating condition of the power inverter 133 is set to be inoperable due to the occurrence of surplus power, the power storage control unit may not operate the power inverter 133 regardless of the remaining charge of the battery 132 and the peak time time. 134) provides power generation control information.
따라서 축전제어부(134)에서는 전력인버터(134)를 동작시키지 않는다. Therefore, the power storage control unit 134 does not operate the power inverter 134.
그러나 잉여전력이 발생하지 않는 것으로 판단되어 전력인버터(134)의 가동조건이 가동가능으로 설정되면, ESS제어부(120)에서는 도 4에 도시된 바와 같이, 축전부(130)로 부터 제공되는 배터리(132)의 충전전량을 확인하여 배터리(132)의 충전량이 정해진 레벨이상인 경우에 피크 시간대에서만 전력인버터(133)를 동작시킬 수 있도록 발전제어정보를 생성하여 축전제어부(134)로 제공한다. However, when it is determined that the surplus power does not occur and the operating condition of the power inverter 134 is set to be movable, the ESS controller 120 may provide a battery provided from the power storage unit 130 as shown in FIG. 4. When the amount of charge of the battery 132 is determined to be higher than or equal to a predetermined level, power generation control information is generated and provided to the power storage control unit 134 so that the power inverter 133 can be operated only during peak times.
상기 축전부(130)와 ESS제어부(120) 또는 부하전력감시부(110)를 포함하여 일체형으로 구성될 수 있으며 각 분리된 디바이스로 구성될 수 있다. The power storage unit 130 and the ESS control unit 120 or the load power monitoring unit 110 may be integrally formed, and may be configured as a separate device.
이와 같은 본 발명 구성에 따르면 부하장치대한 예측 부하전력 또는 전력소모가 큰 부하대상으로 부하장치의 동작여부에 따라서 잉여전력 발생여부를 예측하고 잉여전력이 발생하지 않는 조건에서만 전력인버터(133)가 동작가능하도록 함으로써, 상용전원(계통)으로의 전력 역전송을 방지할 수 있게 된다.According to the configuration of the present invention as described above, the predicted load power or load consumption of the load device is predicted whether the excess power generation according to the operation of the load device with a large load target, and the power inverter 133 operates only under the condition that the excess power does not occur By making it possible, reverse transmission of power to the commercial power source (system) can be prevented.
이와 같은 본 발명에 따르면 고 소비전력의 공조기(에어콘)의 부하전력량을 예측하여 잉여전력량을 예측 하는 것이니만큼, 고 소비전력 부하장치를 대상으로 부하전력감시부(110)를 구성하여 해당 부하장치의 동작여부에 따라서 잉여전력의 발생여부를 판단하여 축전부(130)의 전력인버터(133)의 동작조건을 제어하는 제어수단을 구성할 수 있다.According to the present invention as described above to predict the amount of surplus power by predicting the load power amount of the air conditioner (air conditioner) of high power consumption, by configuring the load power monitoring unit 110 for the high power load load device of the load device The control means for controlling the operating conditions of the power inverter 133 of the power storage unit 130 by determining whether the surplus power is generated according to the operation.
이는 축전부(130) 즉, 전력인버터(133)의 용량을 감안할 때 고 소비전력을 갖는 부하장치가 동작하는 경우 잉여전력이 발생하지 않는 다는 것을 이용 한 것이다.This is to take advantage of the fact that the surplus power does not occur when the load device having a high power consumption when operating the power storage unit 130, that is, the capacity of the power inverter 133.
이와 같은 본 발명 다른 실시 예에 의하면 부하전력의 예측과정 없이 간단하게 정해진 고 소비전력 부하장치의 동작여부를 감안하여 계통 내 전력의 역전송을 방지할 수 있게 된다. According to another embodiment of the present invention as described above, it is possible to prevent reverse transmission of power in a system in consideration of operation of a high power consumption load device that is simply determined without a process of estimating load power.
또한 본 발명의 또 다른 실시 예로 부하의 전력량을 실제로 감시하여 잉여전력량을 산출하여 전력인버터의 동작조건을 제어할 수 있도록 할 수 있다.In another embodiment of the present invention, the amount of surplus power may be calculated by actually monitoring the amount of power of the load to control the operating conditions of the power inverter.
도 6은 본 발명에 있어서 부하전력량을 감시하여 전력인버터를 제어하는 또 다른 실시 예를 나타낸다.FIG. 6 illustrates another embodiment in which the power inverter is controlled by monitoring the amount of load power according to the present invention.
이에 따른 그 구성은, The configuration according to this,
댁내 에너지 활용설비인 전력 부하장치들로 구성되는 부하장치부(200)와 상용전원(계통)에 연계하여 설계되는 계통 연계 축전시스템(100)에 있어서, In the grid-connected power storage system 100 is designed in connection with the load device unit 200 consisting of the power load devices that are the energy utilization facilities of the home and the commercial power (system),
부하장치들로 구성되는 부하장치부(200)의 소비전력을 계측하기 위한 전력량계(300)가 설치되고, 전력량계(300)로 부터 계측된 전력량정보를 제공받아 소비전력량을 실시간 소비전력으로 변환하여 ESS제어부(120)로 제공하는 부하전력감시부(110')와, 축전부(130)로 부터 축전 상태정보를 제공받아 축전부(130)의 축전상태를 판단하고 설정된 피크시간정보에 따라서 축전부(130)의 축전/발전 동작을 제어하며 상기 부하전력감시부(110')로 부터 제공된 실시간 부하 소비전력량과 축전부(130)의 예측순간전력(전력인버터의 용량정보)과 비교하여 잉여전력 발생여부를 예측하여 상기 축전부(130)의 발전 동작을 제어하는 ESS제어부(120)와, 상기 ESS제어부(120)의 제어에 따라서 동작하여 계통 전원을 축전 및 축전되어 있는 전력을 발전시켜 계통 내 연계된 부하장치부(200)에 제공하는 축전부(130)를 포함하여 구성된다.A power meter 300 for measuring the power consumption of the load device 200 configured as the load devices is installed, and receives the measured power information from the power meter 300 to convert the power consumption into real-time power consumption to the ESS. The load power monitoring unit 110 ′ provided to the control unit 120 and the power storage state information are received from the power storage unit 130 to determine the power storage state of the power storage unit 130, and according to the set peak time information. 130 to control the power storage / power generation operation and generate surplus power by comparing the real-time load power consumption provided from the load power monitoring unit 110 'with the predicted instantaneous power (capacity information of the power inverter) of the power storage unit 130; ESS control unit 120 for controlling the power generation operation of the power storage unit 130 and predicted to operate under the control of the ESS control unit 120 to generate power to the system power and stored in the system connected to Load device part 200 It is configured to include a power storage unit 130 is provided.
이와 같은 본 발명 또 다른 실시 예에 따르면, 전력량계(300)를 설치하여 부하장치부(200)의 소비전력을 실제 계측하고, 그 계측된 정보를 이용하여 잉여전력 발생여부를 판단하여 발전조건을 제어하고자 한 것임을 알 수 있다. According to another embodiment of the present invention, the electricity meter 300 is installed to actually measure the power consumption of the load device 200, and by using the measured information to determine whether the surplus power generation to control the power generation conditions It can be seen that.
전력량계(300)에서 계측된 소비전력은 실제로 부하장치부(300)의 소비된 전력을 의미함으로, 실제 역전송을 방지하기 위해서는 실시간 부하전력을 예측하기 위한 수단을 구성하여야하는 바, 부하전력감시부(110')가 전력량계(300)로 부터 계측된 소비전력을 실시간 부하전력으로 연산하기 위한 실시간 부하전력 연산프로세스 수단으로 구성된다.Since the power consumption measured by the watt-hour meter 300 actually means the power consumed by the load device 300, in order to prevent actual reverse transmission, a means for estimating real-time load power should be configured. 110 'is configured as a real-time load power calculation process means for calculating the power consumption measured from the electricity meter 300 in real time load power.
실시간 부하전력의 연산 예측은 설정된 시간동안 계측된 소비전력의 평균을 연산하여 실시간 부하전력을 예측할 수 있다.The computational prediction of the real-time load power may predict the real-time load power by calculating the average of the power consumption measured for the set time.
한편, 본 발명 축전시스템의 또 다른 실시 예로 축전부(130)의 축전전력이 일정 전력이하로 낮아진 경우에 부하장치가 지속적으로 전력을 소비할 경우 부하장치를 강제로 동작을 제한(일시 정지)시킬 수 있도록 구성할 수 있다.On the other hand, in another embodiment of the power storage system of the present invention, when the power storage unit 130 is lowered to a predetermined power or lower, if the load device continuously consumes power, the load device is forced to limit its operation (pause). It can be configured to be.
본 발명 다른 실시 예에 따르면, ESS제어부(120)는 각 부하장치(210), 공조기(220)에 대한 동작을 제어하는 부하장치동작제어수단을 더 포함하여 구성한다.According to another embodiment of the present invention, the ESS control unit 120 further comprises a load device operation control means for controlling the operation of each load device 210, the air conditioner 220.
상기 부하장치동작제어수단은 상기 축전부(130)로 부터 축전전력정보를 제공받아 축전전력에 대하여 부하장치를 제어하기 기 설정된 기준전력정보와 비교하여 축전에너지 부족상태를 판단하고, 부하장치부(200)의 동작을 제한하는 프로세스수단으로 구성된다. The load device operation control means receives the power storage power information from the power storage unit 130 and compares with the reference power information preset to control the load device with respect to the power storage power, and determines the power storage energy shortage state, and the load device unit ( 200 means for limiting the operation of the apparatus.
이와 같은 본 발명 다른 실시 예에 따르면 비상상황에서 이용될 최소한의 축전전력을 보전할 수 있다.According to another embodiment of the present invention as described above it is possible to conserve the minimum power storage to be used in emergency situations.

Claims (8)

  1. 에너지 활용설비인 전력 부하장치들로 구성되는 부하장치부와 상용전원(계통)에 연계하여 계통 내 전력을 축전 또는 축전된 전력을 발전 시켜 계통 내 공급하는 축전수단을 포함하는 계통 연계 축전시스템에 있어서, In a grid-linked power storage system including a power storage device consisting of power load devices, which are energy utilization facilities, and a power storage means for supplying power in the system to electricity generated or stored in electricity in connection with a commercial power source (system). ,
    부하장치들로 구성되는 부하장치부의 동작상태를 감시하는 부하전력감시수단과, 상기 축전수단의 축전 상태를 판단하고 설정된 피크시간정보에 따라서 축전부의 축전/발전 동작을 제어하며 상기 부하전력감시수단으로 부터 감지된 부하장치부의 동작상태 정보에 따라서 잉여전력 발생여부를 예측하여 상기 축전수단의 발전 동작의 동작조건을 설정하여 잉여전력이 발생하지 않는 조건 상에서 축전수단의 발전 제어과정이 이루어지도록 하는 제어수단을 포함하여 구성된 것을 특징으로 하는 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템. Load power monitoring means for monitoring the operation state of the load device portion consisting of the load devices, and determine the power storage state of the power storage means, and controls the power storage / power generation operation of the power storage unit according to the set peak time information, and the load power monitoring means Control means for predicting whether or not surplus power is generated according to the detected operation state information of the load device to set an operation condition of the power generation operation of the power storage means so that the power generation control process of the power storage means is performed under the condition that no surplus power is generated. Grid-associated power storage system for preventing the reverse transmission of power grid, characterized in that configured to include.
  2. 에너지 활용설비인 전력 부하장치들로 구성되는 부하장치부와 상용전원(계통)에 연계하여 계통내 전력을 축전 또는 축전된 전력을 발전 시켜 계통 내 공급하는 축전수단을 포함하는 계통 연계 축전시스템에 있어서, In a grid-connected power storage system including a power storage device consisting of power load devices, which are energy utilization facilities, and a power storage means for supplying power in the system by generating power or stored power in connection with a commercial power source (system). ,
    고 소비전력 부하장치를 대상으로 선택적으로 설치되어 동작상태를 감시하는 부하전력감시수단과, 상기 축전수단의 축전 상태를 판단하고 설정된 피크시간정보에 따라서 축전부의 축전/발전 동작을 제어하며 상기 부하전력감시수단으로 부터 감지된 부하장치의 동작상태 정보에 따라서 상기 축전수단의 발전 동작의 동작조건을 설정하여 잉여전력이 발생하지 않는 조건 상에서 축전수단의 발전 제어과정이 이루어지도록 하는 제어수단을 포함하여 구성된 것을 특징으로 하는 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템. Load power monitoring means selectively installed for the high power consumption load device to monitor the operation state, and determine the power storage state of the power storage means, and controls the power storage / power generation operation of the power storage unit according to the set peak time information and the load power And a control means for setting an operation condition of the power generation operation of the power storage means according to the operation state information of the load device sensed by the monitoring means so that the power generation control process of the power storage means is performed under the condition that no surplus power is generated. A grid-tied power storage system for preventing reverse transmission of electric power.
  3. 에너지 활용설비인 전력 부하장치들로 구성되는 부하장치부와 상용전원(계통)에 연계하여 계통 내 전력을 축전 또는 축전된 전력을 발전 시켜 계통 내 공급하는 축전수단을 포함하는 계통 연계 축전시스템에 있어서, In a grid-linked power storage system including a power storage device consisting of power load devices, which are energy utilization facilities, and a power storage means for supplying power in the system to electricity generated or stored in electricity in connection with a commercial power source (system). ,
    부하장치들로 구성되는 부하장치부의 소비전력을 계측하기 위한 전력량계(300)가 설치되고, 전력량계(300)로 부터 계측된 전력량정보를 제공받아 소비전력량을 실시간 소비전력으로 변환하여 ESS제어부(120)로 제공하는 부하전력감시수단과, 상기 축전수단의 축전 상태를 판단하고 설정된 피크시간정보에 따라서 축전부의 축전/발전 동작을 제어하며 상기 부하전력감시수단으로 부터 제공된 실시간 부하 소비전력량과 축전부의 예측순간전력을 비교하여 잉여전력 발생여부를 예측하여 상기 축전수단의 발전 동작의 동작조건을 설정하여 잉여전력이 발생하지 않는 조건 상에서 축전수단의 발전 제어과정이 이루어지도록 하는 제어수단을 포함하여 구성된 것을 특징으로 하는 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템.A power meter 300 for measuring the power consumption of the load device unit consisting of the load devices is installed, and receives the measured power information from the power meter 300 to convert the power consumption into real-time power consumption ESS control unit 120 Determine the power storage state of the load power storage means and the power storage means, and control the power storage / generation operation of the power storage unit according to the set peak time information, and estimate the real time load power consumption provided from the load power monitoring means and the power storage unit; Comparing the electric power to predict whether the surplus power is generated, and setting an operating condition of the power generation operation of the power storage means to control the power generation means of the power storage means on the condition that no surplus power is generated. Grid-connected power storage system that prevents grid reverse transmission of power.
  4. 제 3항에 있어서, 상기 부하전력감시수단은 상기 전력량계로 부터 입력된 계측된 소비전력정보에 대하여 정해진 시간동안의 평균정보로서 실시간 부하소비전력으로 예측 연산하는 것을 특징으로 하는 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템.[4] The system of claim 3, wherein the load power monitoring means predicts and calculates power consumption based on real-time load power consumption as average information for a predetermined time with respect to the measured power consumption information input from the electricity meter. Grid-connected power storage system to prevent.
  5. 제 1항 내지 제 3항 중 어느 한 항에 있어서, 상기 제어수단과 축전수단은 별도로 디바이스장치의 연결 구성되고, 상기 제어수단은 제공되는 축전 또는 발전제어정보를 상기 축전수단으로 제공하고, 상기 축전수단은 상기 제어수단에서 제공하는 축전 또는 발전제어정보에 따라서 축전수단 내 충전수단 및 발전수단(전력인버터)의 동작제어 및 배터리의 충전상태정보를 제어수단으로 제공하는 축전제어수단을 포함하여 구성되는 것을 특징으로 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템. The power storage means according to any one of claims 1 to 3, wherein the control means and the power storage means are configured to be connected separately to the device apparatus, and the control means provides the power storage or power generation control information provided to the power storage means. The means comprises power storage control means for controlling the operation of the charging means in the power storage means and the power generation means (power inverter) and the state of charge of the battery to the control means in accordance with the power storage or power generation control information provided by the control means. A grid-connected power storage system that prevents grid reverse transmission of power.
  6. 제 1항 또는 제 2항에 있어서, 상기 제어수단과 부하전력감시수단은 별도의 디바이스로 구성되어 유무선 네트워크 수단에 의해 연결 구성된 것을 특징으로 하는 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템.The system-associated power storage system of claim 1 or 2, wherein the control means and the load power monitoring means are configured as separate devices and connected by wired and wireless network means.
  7. 제 1항에 있어서, 상기 제어수단은 상기 부하전력감시수단을 통해 제공된 부하감시정보에 따라서 부하장치의 동작상태 및 상기 축전수단의 축전정보에 따라서 축전상태를 판단하는 상태판단프로세스수단과, 상기 부하장치의 동작상태에 따른 잉여전력발생을 예측하고, 축전수단의 축전상태, 등록된 피크타임정보에 따라서 상기 축전수단의 축전/발전을 제어하는 축발전 제어프로세스수단을 포함하여 구성되며, 2. The control apparatus according to claim 1, wherein the control means comprises: status determination process means for determining an operation state of a load device according to load monitoring information provided through the load power monitoring means and an power storage state according to power storage information of the power storage means; A power generation control process means for predicting the occurrence of surplus power according to the operation state of the apparatus, and controlling the power storage / power generation of the power storage means according to the power storage state of the power storage means and the registered peak time information,
    상기 축발전 제어프로세스수단은, The power generation control process means,
    부하의 예측 순간전력을 연산하는 단계와, 부하의 예측순간전력을 설정된 축전수단의 순간전력을 비교하는 단계와, 상기 단계에서 비교결과 축전수단의 순간전력이 부하의 예측순간전력보다 큰 경우 잉여전력이 발생한다고 예측 판단하고, 축전수단의 순간전력이 부하의 예측순간전력보다 작은 경우 잉여전력이 발생하지 않는 다고 예측 판단하는 판단단계와, 상기 판단단계의 판단결과 잉여전력이 발생한다고 예측된 경우 발전불가능조건으로 설정하여 어떠한 조건상에서도 발전이 이루어지지 않도록 제어하고, 상기 판단단계의 판단결과 잉여전력이 발생하지 않는다고 예측된 경우에는 발전가능조건으로 설정하여 축전수단의 축전전력량이 정해진 레벨이상 또는 피크시간에 발전 제어하는 단계를 포함하는 발전제어프로세스를 제공하는 것을 특징으로 하는 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템.  Calculating the predicted instantaneous power of the load; comparing the predicted instantaneous power of the load with the set instantaneous power of the set power storage means; and in the step, surplus power when the instantaneous power of the power storage means is greater than the predicted instantaneous power of the load; A determination step of predicting that the occurrence of the power supply means; and when the instantaneous power of the power storage means is smaller than the predicted instantaneous power of the load, a determination step of predicting that the surplus power does not occur; If it is predicted that the surplus power is not generated as a result of the judgment in the judgment step by setting it to the impossible condition, and it is determined that the surplus power does not occur, it is set to the power generation condition so that the amount of power storage of the power storage means is higher than the predetermined level or peak time. To provide a power generation control process comprising the steps of controlling power generation. Grid-connected power storage system that prevents the transfer of power to the grid station.
  8. 제 1항 내지 제 3항 중 어느 한 항에 있어서, 상기 제어수단은 부하장치에 대한 동작을 제어하는 부하장치동작제어수단을 더 포함하여 구성하며, The method according to any one of claims 1 to 3, wherein the control means further comprises a load device operation control means for controlling the operation of the load device,
    상기 부하장치동작제어수단은 상기 축전수단의 축전 전력정보를 부하장치를 제어하기 기 설정된 기준전력정보와 비교하여 축전에너지 부족상태를 판단하고, 부하장치의 동작을 제한하는 프로세스수단을 포함하여 구성된 것을 특징으로 하는 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템.The load device operation control means includes a process means for comparing the power storage power information of the power storage means with a reference power information set to control the load device to determine a low power storage energy status, and to limit the operation of the load device. A grid-connected power storage system that prevents grid reverse transmission of power.
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