-
公开(公告)号：KR101778774B1
公开(公告)日：2017-09-27
申请号：KR1020140130780
申请日：2014-09-30
Applicant: 한국전기연구원
CPC classification number: Y02P80/14
Abstract: 아일랜딩검지시스템에의한마이크로그리드내의아일랜딩현상검지방법에있어서, 분산전원에서의전압에관한단위시간당주파수정보를수집하는단계; 수집한주파수정보를통해주파수변화율을계산하는단계; 주파수변화율이문턱값을초과하는경우, 초과시간을산정하는단계; 및산정한초과시간이일정시간이상인경우아일랜딩현상으로판정하는단계를포함하는것을특징으로하는마이크로그리드아일랜딩검지방법이개시된다.
Abstract translation: 1。一种岛屿降落检测系统检测微电网中岛屿着陆现象的方法，其特征在于，包括：收集与分布式电源电压有关的单位时间频率信息; 通过收集的频率信息计算频率变化率; 如果频率变化率超过阈值则计算加班时间; 并且当估计的加班时间等于或大于分配的时间时判断孤岛现象的发生。
-
公开(公告)号：KR1020150061067A
公开(公告)日：2015-06-04
申请号：KR1020130143581
申请日：2013-11-25
Applicant: 한국전기연구원
Abstract: 본발명은하나의장치를이용하여직류출력인태양전지나연료전지의시뮬레이터혹은단순직류전원으로동작할수 있으며, 또한교류출력인전력계통시뮬레이터등으로도동작하여, 각종시험기기의전원혹은부하등의시험이나인증을위한다기능시뮬레이터에관한것이다.
Abstract translation: 本发明是通过使用作为交替输出的装置或电力系统模拟器来操作诸如太阳能电池或燃料电池的直接输出的模拟器或简单的直接电源的多功能模拟器。 本发明是用于每个测试显示器的电源或负载的测试或认证。
-
公开(公告)号：KR1020140075063A
公开(公告)日：2014-06-19
申请号：KR1020120142545
申请日：2012-12-10
Applicant: 한국전기연구원
IPC: H02P9/10
CPC classification number: H02P9/10 , F03D7/0284 , F03D7/048
Abstract: The present invention relates to a method and a system for compensating for a wind power generating output. More specifically, the method and the system are capable of providing an optimum output compensation to minimize output changes in wind power generation in which output changes frequently occur due to intermittent output characteristics. The method for compensating for a wind power generating output includes the steps of: (a) collecting output values to a power grid by a wind power generating facility connected to the power grid; (b) generating a first compensation signal for low frequency compensation and a second compensation signal for high frequency compensation from the output values; and (c) controlling charging/discharging operations of a first energy storing device between the first energy storing device and a second energy storing device which are electrically connected to the wind power generating facility according to the first compensation signal and have different output characteristics from each other, and controlling operations of the second energy storing device according to the second compensation signal. According to the present invention, the method and the system allows the low frequency compensation and the high frequency compensation for an output compensation component by a cooperative control of the multiple energy storing devices having different output characteristics after the output compensation component which is calculated according to the output values collected, in real time, from the wind power generating facility is separated into the component for low frequency compensation and the component for high frequency compensation. Therefore, the method and the system of the present invention can provide an optimum output compensation which is capable of effectively responding to the output changes in the wind generation and the power grid frequency changes due to load changes.
Abstract translation: 本发明涉及一种用于补偿风力发电输出的方法和系统。 更具体地，该方法和系统能够提供最佳的输出补偿，以最小化由于间歇输出特性而频繁发生输出变化的风力发电的输出变化。 用于补偿风力发电输出的方法包括以下步骤：（a）通过连接到所述电网的风力发电设备将输出值收集到电力网; （b）从所述输出值产生用于低频补偿的第一补偿信号和用于高频补偿的第二补偿信号; 以及（c）控制第一能量存储装置与第一能量存储装置之间的充电/放电操作，所述第一能量存储装置和第二能量存储装置根据第一补偿信号与风力发电设备电连接，并具有与每个能量存储装置不同的输出特性 根据第二补偿信号控制第二能量存储装置的操作。 根据本发明，该方法和系统通过在输出补偿分量之后具有不同输出特性的多个能量存储装置的协调控制，允许低频补偿和高频补偿用于输出补偿分量，该输出补偿分量根据 从风力发电设备实时收集的输出值被分为用于低频补偿的部件和用于高频补偿的部件。 因此，本发明的方法和系统可以提供最佳的输出补偿，其能够有效地响应于风力发电的输出变化和由于负载变化引起的电网频率变化。
-
公开(公告)号：KR101097458B1
公开(公告)日：2011-12-23
申请号：KR1020090107411
申请日：2009-11-09
Applicant: 한국전기연구원
Abstract: 마이크로그리드시스템및 정지형스위치의부하제어방법이개시된다. 본발명의일 실시예에따른마이크로그리드시스템은복수의분산전원, 에너지저장장치및 복수의부하를포함하는마이크로그리드시스템에있어서, 통신망과연계하여, 상기복수의부하각각에대한전력수요정보, 상기복수의분산전원각각에대한발전량을포함하는상태정보및 상기에너지저장장치에대한용량을포함하는상태정보를수집하고, 전력공급망과연계하여상기마이크로그리드시스템을통합관리하는에너지관리시스템; 및상기전력공급망과상기마이크로그리드시스템간전력조류를검출하고, 검출된상기전력조류와상기에너지관리시스템으로부터수신된정보를이용하여상기마이크로그리드시스템자체만의독립운전으로전환시 상기복수의부하각각을직접제어하는정지형스위치를포함할수 있다.
-
公开(公告)号：KR1020110050858A
公开(公告)日：2011-05-17
申请号：KR1020090107411
申请日：2009-11-09
Applicant: 한국전기연구원
Abstract: PURPOSE: A micro-grid system and a method for controlling load in a static transfer switch are provided to protect main components of a micro-grid system by monitoring power quality. CONSTITUTION: A micro-grid system comprises plural loads, an energy storage device, an energy management system(23) and a static switch. The static switch comprises a blocking unit, a current detector, a voltage detector and a control unit, and receives the information on the micro-grid system from the energy management system. In addition, the static switch calculates the load blocking amount based on the information received from the energy management system when being switched into an independent operation.
Abstract translation: 目的：提供微电网系统和控制静态转换开关负载的方法，通过监控电力质量来保护微电网系统的主要部件。 构成：微电网系统包括多个负载，能量存储装置，能量管理系统（23）和静态开关。 静态开关包括阻断单元，电流检测器，电压检测器和控制单元，并且从能量管理系统接收微电网系统上的信息。 此外，静态开关根据从能量管理系统接收到的信息切换到独立操作时，计算负载阻塞量。
-
Patent Agency Ranking
公开(公告)号：KR100932502B1
公开(公告)日：2009-12-17
申请号：KR1020070123118
申请日：2007-11-30
Applicant: 한국전기연구원
CPC classification number: H02J3/38 , H02J2003/388
Abstract: A method for detecting an islanding operation of an inverter based distributed power source actively is provided to minimize an output disturbance without distorting an output current. A frequency variation is induced by using a reactive power. If the frequency exceeds the detection condition of an islanding operation, the islanding operation is detected. A reactive power output controller of the distributed power source outputs a reactive power component reference current command value. A frequency variation acceleration control loop(610) is added to the reactive power component reference current command value. The frequency variation is accelerated by the reactive power output or the change of the power factor.
Abstract translation: 提供一种主动检测基于逆变器的分布式电源的孤岛操作的方法，以使输出扰动最小化而不会使输出电流失真。 频率变化是通过使用无功功率引起的。 如果频率超过孤岛操作的检测条件，则检测到孤岛操作。 分布式电源的无功功率输出控制器输出无功功率分量参考电流命令值。 频率变化加速度控制环路（610）被添加到无功功率分量参考电流命令值。 频率变化通过无功功率输出或功率因数的变化而加速。
-
公开(公告)号：KR1020090056115A
公开(公告)日：2009-06-03
申请号：KR1020070123118
申请日：2007-11-30
Applicant: 한국전기연구원
CPC classification number: H02J3/38 , H02J2003/388
Abstract: A method for detecting an islanding operation of an inverter based distributed power source actively is provided to minimize an output disturbance without distorting an output current. A frequency variation is induced by using a reactive power. If the frequency exceeds the detection condition of an islanding operation, the islanding operation is detected. A reactive power output controller of the distributed power source outputs a reactive power component reference current command value. A frequency variation acceleration control loop(610) is added to the reactive power component reference current command value. The frequency variation is accelerated by the reactive power output or the change of the power factor.
Abstract translation: 提供一种用于主动检测基于逆变器的分布式电源的孤岛作用的方法，以使输出干扰最小化，而不会使输出电流失真。 通过使用无功功率来引起频率变化。 如果频率超过孤岛作业的检测条件，则检测孤岛作业。 分布式电源的无功功率输出控制器输出无功功率分量参考电流指令值。 频率变化加速度控制回路（610）被添加到无功功率分量参考电流指令值。 频率变化由无功功率输出或功率因数的变化加速。
-
公开(公告)号：KR1020080109515A
公开(公告)日：2008-12-17
申请号：KR1020070057925
申请日：2007-06-13
Applicant: 한국전기연구원
Abstract: A system for calculating the installation area of a middle or large solar power plant is provided to produce the analysis index between investment costs and economical efficiency. A system for calculating the installation area of a solar power plant comprises the followings: a plane distance calculating module(10) which calculates the optimal distance capable of making the end part of a front array not cover the surface of a rear array from an angle at which solar beams are outputted in case the capacity and type of the solar power plant are decided; an area calculating module(20) which produces the occupied area of a solar cell array unit group from the plane distance calculated from the plane distance calculating module; and an interface module(30) for displaying the calculated area.
Abstract translation: 提供了一个计算中大型太阳能发电厂安装面积的系统，以提供投资成本与经济效益之间的分析指标。 一种用于计算太阳能发电厂的安装面积的系统包括：平面距离计算模块（10），其计算能够使前阵列的端部不覆盖后排阵列的表面的最佳距离， 在决定太阳能发电厂的容量和类型的情况下输出太阳能光束; 区域计算模块（20），根据从平面距离计算模块计算的平面距离，生成太阳能电池阵列单元组的占用面积; 以及用于显示所计算的区域的接口模块（30）。
-
公开(公告)号：KR1020080034530A
公开(公告)日：2008-04-22
申请号：KR1020060100559
申请日：2006-10-17
Applicant: 한국전기연구원
IPC: H02J3/38
Abstract: A method and a device of independently detecting an individual operation for a microgrid are provided to continuously supply power to a major load in the microgrid in connection with a microgrid operation system. A device for independently detecting an individual operation for a microgrid includes a current detector, voltage detectors(30,31), a filter(33), a buffer(34), an A/D(Analog to Digital) conversion circuit(35), a display and operation unit(36), a signal processor(37), a memory(38), and a communication port(40). The current detector detects a current flowing on a breaker(7) and supplies the detected current to the A/D conversion circuit through the filter. The voltage detectors detect voltages on both terminals of the breaker and supplies the detected voltages to the A/D conversion circuit through the filter. The A/D conversion circuit converts a current detection signal and a voltage detection signal received from the current and voltage detectors, and supplies converted digital signals to the signal processor.
Abstract translation: 提供了一种独立地检测微电网的单独操作的方法和装置，以连续地向微电网中的主要负载供电，该微电网与微电网操作系统相连。 用于独立地检测微电网的单独操作的装置包括电流检测器，电压检测器（30,31），滤波器（33），缓冲器（34），A / D（模拟到数字）转换电路（35） ，显示和操作单元（36），信号处理器（37），存储器（38）和通信端口（40）。 电流检测器检测流过断路器（7）的电流，并通过滤波器将检测到的电流提供给A / D转换电路。 电压检测器检测断路器两端的电压，并通过滤波器将检测到的电压提供给A / D转换电路。 A / D转换电路对从电流和电压检测器接收的电流检测信号和电压检测信号进行转换，并将转换的数字信号提供给信号处理器。
-
公开(公告)号：KR100794197B1
公开(公告)日：2008-01-11
申请号：KR1020060060198
申请日：2006-06-30
Applicant: 한국전기연구원
IPC: H02J3/38
CPC classification number: Y02E10/563
Abstract: 본 발명은 하이브리드 분산발전 시스템을 이용한 운전 제어방법에 관한 것으로서, (f) 통합감시 제어부가 직류 공통모선(A1)의 전압(Vdc)값과, 직류단 최고전압(Vdc_max) 및 최저전압(Vdc_min)을 바탕으로 제 1 분산전원부가 승압 또는 충전모드로 설정되었는지 판단하는 단계; (g) 상기 (f) 단계의 판단결과, 승압 또는 충전모드가 설정되었을 경우, 통합감시 제어부가 계수기(Cnt)를 증가시키고, 증가된 계수기의 값을 설정치와 비교하여 설정치 이상인지 여부를 판단하는 단계; (h) 상기 (g) 단계의 판단결과, 설정치 이상인 경우 즉, 일정시간이 경과한 경우, 통합감시 제어부가 계수기를 0 으로 설정하고, 승압 또는 충전모드를 실행하는 단계; (i) 상기 통합감시 제어부가 실행되는 운전이 승압모드인지 여부를 판단하는 단계; (j) 상기 (i) 단계의 판단결과, 승압모드일 경우, 통합감시 제어부가 전압기준치를 최고전압(Vdc_max) 및 최저전압(Vdc-min)의 중간 값으로 설정하는 단계; 및 (k) 상기 통합감시 제어부가 축전지의 충전상태를 검사하고 승압운전을 실행하는 단계; 로 구성된다.
하이브리드, 분산전원, 출력평준화
-
-
-
-
-
-
-
-
-
Search Results
106
records
(took 0.055 seconds)
