KR20140057746A - Energy management system and smart meter - Google Patents

Energy management system and smart meter Download PDF

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Publication number
KR20140057746A
KR20140057746A KR1020120123841A KR20120123841A KR20140057746A KR 20140057746 A KR20140057746 A KR 20140057746A KR 1020120123841 A KR1020120123841 A KR 1020120123841A KR 20120123841 A KR20120123841 A KR 20120123841A KR 20140057746 A KR20140057746 A KR 20140057746A
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South Korea
Prior art keywords
power
unit
power supply
management system
battery
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KR1020120123841A
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Korean (ko)
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정병홍
이근우
변진성
박세현
김재억
이상준
박수훈
Original Assignee
그린산업 주식회사
중앙대학교 산학협력단
(주) 티아이에스
재단법인 경남테크노파크
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Priority to KR1020120123841A priority Critical patent/KR20140057746A/en
Publication of KR20140057746A publication Critical patent/KR20140057746A/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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/242—Home appliances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/248—UPS systems or standby or emergency generators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Provided is an energy management system capable of differentially supplying or shutting off power. The energy management system includes a monitoring unit which monitors whether the reserve rate drops equal to or lower than a predefined level; a priority management unit which manages priorities for supplying or shutting off power to electric devices; a battery power check unit which checks the remaining power of an uninterruptible power supply (UPS) battery; a control unit which generates a control command for supplying or shutting off power to the electric devices based on the priorities determined by the priority management unit and the remaining power of the UPS battery checked by the battery power check unit; and a differential power supply unit which supplies or shuts off power to the electric devices according to the control command.

Description

차등적 전력 차단 및 공급을 위한 에너지 관리 시스템 및 스마트 미터{ENERGY MANAGEMENT SYSTEM AND SMART METER}[0001] ENERGY MANAGEMENT SYSTEM AND SMART METER [0002] FIELD OF THE INVENTION [0003]

본 발명은 에너지 관리 시스템에 관한 것으로서, 보다 구체적으로는 위급 상황 등 전력 예비율이 낮은 상황에서 차등적으로 전력 차단 및 공급을 할 수 있는 에너지 관리 시스템 및 스마트 미터에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy management system, and more particularly, to an energy management system and a smart meter capable of selectively interrupting power supply and supplying power in a situation where a power reserve ratio is low, such as an emergency situation.

최근 스마트 그리드(Smart Grid) 등 에너지 효율을 최적화하기 위한 시스템이 각광받고 있다. 이는 전력 낭비를 줄이고 에너지 활용 효율을 높이기 위한 것으로, 최근, 전력 사용이 많은 공장, 건물 등은 물론 댁 내의 전력 사용 효율을 높이기 위한 다양한 방법들이 고려되고 있다.
Recently, a system for optimizing energy efficiency such as Smart Grid has been attracting attention. In order to reduce power waste and increase energy utilization efficiency, various methods for increasing the efficiency of power use in the home as well as factories, buildings and the like, which have high power consumption, are being considered recently.

본 발명은 위급 상황 등 전력 예비율이 낮은 상황에서 차등적으로 전력 차단 및 공급을 할 수 있는 에너지 관리 시스템 및 스마트 미터를 제공하기 위한 것이다.
An object of the present invention is to provide an energy management system and a smart meter capable of differentiating power supply and supply in a situation where the power reserve ratio is low, such as an emergency situation.

본 발명의 일 측면에 따르면, 전력 예비율이 미리 지정된 레벨 이하인 상황을 모니터링하는 모니터링부; 전기 디비이스들에 관한 전력 공급 및 차단에 관한 우선순위를 관리하기 위한 우선순위 관리부; UPS(uninterruptible power supply) 배터리의 잔량을 확인하는 배터리 잔량 확인부; 상기 우선순위 관리부에 의해 결정된 우선순위 및 상기 배터리 잔량 확인부를 통해 확인된 UPS 배터리 잔량에 기초하여, 전기 디바이스들에 대한 전력 공급 및 차단에 관한 제어 명령을 생성하는 제어부; 상기 제어 명령에 따라 전기 디바이스들에 대한 전력 공급 및 차단을 수행하는 차등적 전력 공급부를 포함하는 차등적 전력 차단 및 공급이 가능한 에너지 관리 시스템이 제공된다.
According to an aspect of the present invention, there is provided a monitoring apparatus comprising: a monitoring unit monitoring a situation where a power reserve ratio is lower than a predetermined level; A priority management unit for managing priorities regarding power supply and interruption of electric devices; A battery remaining amount checking unit for checking the remaining amount of an uninterruptible power supply (UPS) battery; A control unit for generating a control command related to power supply and shutdown of the electric devices based on the priority determined by the priority managing unit and the UPS battery remaining amount confirmed through the battery remaining amount checking unit; There is provided a differential power cutoff and supplyable energy management system including a differential power supply for performing power supply and cutoff for electric devices in accordance with the control command.

본 발명의 실시예에 의하면, 위급 상황 등 전력 예비율이 낮은 상황에서 차등적으로 전력 차단 및 공급을 할 수 있는 에너지 관리 시스템 및 스마트 미터를 제공할 수 있다.
According to the embodiments of the present invention, it is possible to provide an energy management system and a smart meter capable of differentiating power supply and supply in a situation where the power reserve ratio is low, such as an emergency situation.

도 1은 본 발명의 실시예에 따른 차등적 전력 차단 및 공급이 가능한 에너지 관리 시스템의 블록도.1 is a block diagram of an energy management system capable of differential power cutoff and provision according to an embodiment of the present invention;

본 발명은 다양한 변경을 가할 수 있고 여러 가지 실시예를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 이를 상세한 설명을 통해 상세히 설명하고자 한다. 그러나, 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

본 발명을 설명함에 있어서, 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다. 또한, 본 명세서의 설명 과정에서 이용되는 숫자(예를 들어, 제1, 제2 등)는 하나의 구성요소를 다른 구성요소와 구분하기 위한 식별기호에 불과하다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

또한, 본 명세서에서, 일 구성요소가 다른 구성요소와 "연결된다" 거나 "접속된다" 등으로 언급된 때에는, 상기 일 구성요소가 상기 다른 구성요소와 직접 연결되거나 또는 직접 접속될 수도 있지만, 특별히 반대되는 기재가 존재하지 않는 이상, 중간에 또 다른 구성요소를 매개하여 연결되거나 또는 접속될 수도 있다고 이해되어야 할 것이다.Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

이하, 첨부된 도면들을 참조하여 본 발명의 실시예를 설명한다.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

기존의 스마트 미터의 경우 연결된 기기의 전력 사용량을 측정하여 서버로 송신하거나 원격에서 신호를 보내어 제어하는 기능만 가지고 있다. 따라서 정전과 같은 위급상황 발생 시 특별한 대응을 하지 못하였다. 그러나 제안하는 에너지 관리 시스템 및 스마트 미터는 정전과 같은 위급상황 발생하거나 전력 예비율이 낮은 상황에서 차등적 전력 차단 및 UPS(uninterruptible power supply) 배터리로부터 차등적 전력 공급이 가능하다. 따라서, 본 발명은 위와 같은 전력 위급 상황 등에 있어서 차등적 전력 차단 및 공급이 가능한 에너지 관리 시스템에 관한 것이며, 이는 도 1과 같이 구현될 수 있다.
In the case of a conventional smart meter, it has a function of measuring the power consumption of a connected device and sending it to a server or sending a signal from a remote device. Therefore, no special measures were taken in case of emergency such as power failure. However, the proposed energy management system and smart meter are capable of differential power interruption and differential power supply from uninterruptible power supply (UPS) batteries in the event of an emergency such as a power outage or in a low power reserve. Accordingly, the present invention relates to an energy management system capable of differentiating and interrupting power in a power emergency situation as described above, which can be implemented as shown in FIG.

도 1은 본 발명의 실시예에 따른 차등적 전력 차단 및 공급이 가능한 에너지 관리 시스템의 블록도이다.1 is a block diagram of an energy management system capable of differential power cutoff and supply according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 일 실시예에 따른 차등적 전력 차단 및 공급이 가능한 에너지 관리 시스템(100)은, 전력 예비율이 미리 지정된 레벨 이하인 상황을 모니터링하는 모니터링부(20); 전기 디비이스들에 관한 전력 공급 및 차단에 관한 우선순위를 관리하기 위한 우선순위 관리부(40); UPS(uninterruptible power supply) 배터리의 잔량을 확인하는 배터리 잔량 확인부(70); 상기 우선순위 관리부(40)에 의해 결정된 우선순위 및 상기 배터리 잔량 확인부(70)를 통해 확인된 UPS 배터리 잔량에 기초하여, 전기 디바이스들에 대한 전력 공급 및 차단에 관한 제어 명령을 생성하는 제어부(50); 상기 제어 명령에 따라 전기 디바이스들에 대한 전력 공급 및 차단을 수행하는 차등적 전력 공급부(30)를 포함할 수 있다. 여기서, 상기 우선순위 및 UPS 배터리 잔량 등에 관한 데이터는 메모리(60)에 저장될 수 있다.Referring to FIG. 1, an energy management system 100 capable of differential power cutoff and supply according to an embodiment of the present invention includes a monitoring unit 20 for monitoring a situation where a power reserve ratio is below a predetermined level; A priority management unit (40) for managing priorities regarding power supply and interruption of electric devices; A battery remaining amount checking unit 70 for checking the remaining amount of an uninterruptible power supply (UPS) battery; A control unit for generating a control command related to power supply and interruption to the electric devices based on the priority determined by the priority managing unit 40 and the remaining amount of the UPS battery confirmed through the remaining battery charge checking unit 70 50); And a differential power supply unit 30 for performing power supply and shutdown of the electric devices according to the control command. Here, the data on the priority, the remaining capacity of the UPS, and the like may be stored in the memory 60.

본 발명의 실시예에 따른 에너지 관리 시스템(100)에 의하면, 먼저 전기 디바이스들을 우선순위 및 중요도에 따라 몇 가지 그룹으로 분류한다. 분류된 그룹은 공장, 사무실, 가정, 연구실 등 공간의 사용 목적에 따라 다르게 분류될 수 있다. 연구실로 예를 들면, A그룹은 가장 중요도가 높은 기기이며 PC, 시뮬레이터, 실험장비 등과 같이 갑작스런 전력 차단 시 경제적인 손실이 큰 기기를 의미한다. B그룹은 그 다음 중요도를 갖는 기기이며, C그룹은 전력 차단 시 사용자의 불편은 야기 되나 경제적인 손실은 없는 기기를 의미한다.According to the energy management system 100 according to the embodiment of the present invention, the electric devices are first classified into several groups according to priority and importance. Classified groups can be classified differently according to the purpose of use of space such as factories, offices, homes, laboratories. For example, the A group is the most important equipment in the laboratory, and means a device that is economically disadvantageous in sudden power cuts such as PCs, simulators, and experimental equipment. Group B is the next important device, and Group C means a device that causes inconvenience to the user when the power is shut down but does not have any economic loss.

본 발명의 실시예에 따른 차등적 전력 차단 및 공급 방법을 시나리오를 들어 설명하면, 정전 발생하여 UPS 배터리로부터 전력을 공급 받아야 할 시, UPS의 배터리 잔량을 에너지 관리 시스템에서 모니터링하고 이에 따라 전체 그룹에 전력을 공급할지, 아니면 중요도가 높은 그룹에 우선적으로 전력을 공급할지 결정한다. 전력 예비율이 낮은 상황에서도 마찬가지로 에너지 관리 시스템에서는 전력 예비율 정보를 지속적으로 모니터링하고 있고, 전력 예비율이 낮아져 위급 상황 발생이 우려가 되면, 우선적으로 중요도가 낮은 그룹의 전력을 먼저 차단시킬 수 있다.
The following describes a scenario of a differential power cutoff and supply method according to an embodiment of the present invention. When a power failure occurs and power is to be supplied from the UPS battery, the remaining battery level of the UPS is monitored by the energy management system, Decide whether to supply power or preferentially supply power to groups of high importance. Similarly, the energy management system continuously monitors the power reserve ratio information even when the power reserve ratio is low, and if the power reserve ratio is low and the occurrence of an emergency occurs, the power of the group with low priority can be firstly cut off.

이상에서는 본 발명의 실시예를 참조하여 설명하였지만, 해당 기술 분야에서 통상의 지식을 가진 자라면 하기의 특허 청구의 범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 쉽게 이해할 수 있을 것이다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims And changes may be made without departing from the spirit and scope of the invention.

Claims (1)

전력 예비율이 미리 지정된 레벨 이하인 상황을 모니터링하는 모니터링부;
전기 디비이스들에 관한 전력 공급 및 차단에 관한 우선순위를 관리하기 위한 우선순위 관리부;
UPS(uninterruptible power supply) 배터리의 잔량을 확인하는 배터리 잔량 확인부;
상기 우선순위 관리부에 의해 결정된 우선순위 및 상기 배터리 잔량 확인부를 통해 확인된 UPS 배터리 잔량에 기초하여, 전기 디바이스들에 대한 전력 공급 및 차단에 관한 제어 명령을 생성하는 제어부;
상기 제어 명령에 따라 전기 디바이스들에 대한 전력 공급 및 차단을 수행하는 차등적 전력 공급부
를 포함하는 차등적 전력 차단 및 공급이 가능한 에너지 관리 시스템.

A monitoring unit monitoring a situation where a power reserve ratio is lower than a predetermined level;
A priority management unit for managing priorities regarding power supply and interruption of electric devices;
A battery remaining amount checking unit for checking the remaining amount of an uninterruptible power supply (UPS) battery;
A control unit for generating a control command regarding power supply to and shut-off of the electric devices based on the priority determined by the priority managing unit and the UPS battery remaining amount confirmed through the battery remaining amount checking unit;
A differential power supply for performing power supply and cut-off for the electric devices according to the control command;
And an energy management system capable of differential power cut-off and supply.

KR1020120123841A 2012-11-02 2012-11-02 Energy management system and smart meter KR20140057746A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160069080A (en) * 2014-12-05 2016-06-16 중앙대학교 산학협력단 Power control appratus and method for supplying power using thereof
KR102048528B1 (en) * 2019-02-27 2019-11-25 엘아이지넥스원 주식회사 Apparatus and method for controlling electric power of wearable device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160069080A (en) * 2014-12-05 2016-06-16 중앙대학교 산학협력단 Power control appratus and method for supplying power using thereof
KR102048528B1 (en) * 2019-02-27 2019-11-25 엘아이지넥스원 주식회사 Apparatus and method for controlling electric power of wearable device

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