WO2013157729A1 - Système de stockage d'énergie connecté au réseau, destiné à éviter une réalimentation de la puissance - Google Patents

Système de stockage d'énergie connecté au réseau, destiné à éviter une réalimentation de la puissance 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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WO
WIPO (PCT)
Prior art keywords
power
power storage
load
grid
control
Prior art date
Application number
PCT/KR2013/000797
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English (en)
Korean (ko)
Inventor
구승엽
Original Assignee
주식회사 차후
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Filing date
Publication date
Application filed by 주식회사 차후 filed Critical 주식회사 차후
Publication of WO2013157729A1 publication Critical patent/WO2013157729A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • 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

Definitions

  • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

La présente invention concerne un système de stockage d'énergie connecté au réseau et, plus particulièrement, un système de stockage d'énergie connecté au réseau qui surveille l'état de fonctionnement d'un dispositif de charge, commande une alimentation de sortie générale vers l'intérieur d'un réseau, dans un système de stockage d'énergie (ESS), de manière à ne pas entraîner de réalimentation et empêche la réalimentation de la puissance.
PCT/KR2013/000797 2012-04-17 2013-01-31 Système de stockage d'énergie connecté au réseau, destiné à éviter une réalimentation de la puissance WO2013157729A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0039891 2012-04-17
KR1020120039891A KR101205459B1 (ko) 2012-04-17 2012-04-17 전력의 계통 역전송을 방지하는 계통 연계형 축전시스템

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WO2013157729A1 true WO2013157729A1 (fr) 2013-10-24

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WO (1) WO2013157729A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104333025A (zh) * 2014-11-15 2015-02-04 国家电网公司 适应脉冲型负荷功率波动平抑的超级电容配置方法
CN105762822A (zh) * 2016-05-17 2016-07-13 国网安徽省电力公司芜湖供电公司 一种压缩空气储能系统的并网结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050012195A (ko) * 2000-03-17 2005-01-31 조통래 축전장치를 구비한 열전병급시스템
JP2006163576A (ja) * 2004-12-03 2006-06-22 Sharp Corp 蓄電設備管理システム
JP2007252085A (ja) * 2006-03-15 2007-09-27 Osaka Gas Co Ltd 発電システム
KR20100013130A (ko) * 2008-07-30 2010-02-09 한국전력공사 주택용 직류전원 공급 및 관리 시스템 및 그 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050012195A (ko) * 2000-03-17 2005-01-31 조통래 축전장치를 구비한 열전병급시스템
JP2006163576A (ja) * 2004-12-03 2006-06-22 Sharp Corp 蓄電設備管理システム
JP2007252085A (ja) * 2006-03-15 2007-09-27 Osaka Gas Co Ltd 発電システム
KR20100013130A (ko) * 2008-07-30 2010-02-09 한국전력공사 주택용 직류전원 공급 및 관리 시스템 및 그 방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104333025A (zh) * 2014-11-15 2015-02-04 国家电网公司 适应脉冲型负荷功率波动平抑的超级电容配置方法
CN104333025B (zh) * 2014-11-15 2016-11-16 国家电网公司 适应脉冲型负荷功率波动平抑的超级电容配置方法
CN105762822A (zh) * 2016-05-17 2016-07-13 国网安徽省电力公司芜湖供电公司 一种压缩空气储能系统的并网结构

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