• Title, Summary, Keyword: Power 모델

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Instruction-level Power Model for Asynchronous Processor, A8051 (비동기식 프로세서 A8051의 명령어 레벨 소비 전력 모델)

  • Lee, Je-Hoon
    • The Journal of the Korea Contents Association
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    • v.12 no.7
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    • pp.11-20
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    • 2012
  • This paper presents new instruction-level power model for an asynchronous processor, A8051. Even though the proposed model estimates power consumption as instruction level, this model reflects the behavioral features of asynchronous pipeline during the program is executed. Thus, it can effectively enhance the accuracy of power model for an asynchronous embedded processor without significant complexity of power model as well as the increase of simulation time. The proposed power model is based on the implementation of A8051 to reflect the characteristics of power consumption in A8051. The simulation results of the proposed model is compared with that of gate-level synthesized A8051. The proposed power model shows the accuracy of 94% and the simulation time for estimation the power consumption was reduced to 1,600 times.

Improved Side Channel Analysis Using Power Consumption Table (소비 전력 테이블 생성을 통한 부채널 분석의 성능 향상)

  • Ko, Gayeong;Jin, Sunghyun;Kim, Hanbit;Kim, HeeSeok;Hong, Seokhie
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.27 no.4
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    • pp.961-970
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    • 2017
  • The differential power analysis calculates the intermediate value related to sensitive information and substitute into the power model to obtain (hypothesized) power consumption. After analyzing the calculated power consumption and measuring power consumption, the secret information value can be obtained. Hamming weight and hamming distance models are most commonly used power consumption model, and the power consumption model is obtained through the modeling technique. If the power consumption model assumed by the actual equipment differs from the power consumption of the actual equipment, the side channel analysis performance is declined. In this paper, we propose a method that records measured power consumption and exploits as power consumption model. The proposed method uses the power consumption at the time when the information (plain text, cipher text, etc.) available in the encryption process. The proposed method does not need template in advance and uses the power consumption measured by the actual equipment, so it accurately reflects the power consumption model of the equipment.. Simulation and experiments show that by using our proposed method, side channel analysis is improved on the existing power modeling method.

Design of short-term forecasting model of distributed generation power for wind power (풍력 발전을 위한 분산형 전원전력의 단기예측 모델 설계)

  • Song, Jae-Ju;Jeong, Yoon-Su;Lee, Sang-Ho
    • Journal of Digital Convergence
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    • v.12 no.3
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    • pp.211-218
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    • 2014
  • Recently, wind energy is expanding to combination of computing to forecast of wind power generation as well as intelligent of wind powerturbine. Wind power is rise and fall depending on weather conditions and difficult to predict the output for efficient power production. Wind power is need to reliably linked technology in order to efficient power generation. In this paper, distributed power generation forecasts to enhance the predicted and actual power generation in order to minimize the difference between the power of distributed power short-term prediction model is designed. The proposed model for prediction of short-term combining the physical models and statistical models were produced in a physical model of the predicted value predicted by the lattice points within the branch prediction to extract the value of a physical model by applying the estimated value of a statistical model for estimating power generation final gas phase produces a predicted value. Also, the proposed model in real-time National Weather Service forecast for medium-term and real-time observations used as input data to perform the short-term prediction models.

Impact of Dynamic Load Model on Short-Term Voltage Stability of Korea Power System and Estimation of Dynamic Load Model Parameters (국내 계통의 단기 전압 안정도에 대한 부하 모델의 영향성 검토 및 부하 모델 파라미터 선정)

  • Moon, Jaemin;Kim, Jae-Kyeong;Hur, Kyeon;Nam, Suchul;Kim, YongHak
    • KEPCO Journal on Electric Power and Energy
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    • v.5 no.1
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    • pp.17-24
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    • 2019
  • In this paper, we analyzed the effect of power system load model on the short-term voltage stability analysis results. First, we introduced common load models. We also confirmed that some load models can not represent actual system phenomena even if the model parameters are optimized. Also, we studied about the influences of load parameters and regional characteristics of load model on the sort-term voltage stability of KEPCO power system considering the contingency. The results showed that the importance of selecting a load model was confirmed again. And we recognized about it can be understood that it should reflect the load characteristics of the area near the assumed contingency more accurately.

A Study of the AC/DC Interconnected system Using the Cheju-Haenam HVDC PSCAD/EMTDC Model (PSCAD/EMTDC 제주-해남 HVDC(High-Voltage Direct Current)시스템 해석모델을 이용한 교직연계계통 분석)

  • Oh, Kwan-Il;Yoon, Jong-Su;Jeon, Young-Soo;Chang, Byung-Hoon;Lim, Sung-Joo;Choo, Jin-Boo
    • Proceedings of the KIEE Conference
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    • pp.158-160
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    • 2001
  • 본 논문은 PSCAD/EMTDC프로그램을 이용한 제주-해남 HVDC시스템의 해석모델 개발과 해석모델을 이용한 제주-해남 HVDC시스템의 운전특성에 대한 분석 내용을 기술하였다. 제주-해남 HVDC의 안정적인 운용을 위해서는 HVDC시스템의 이해와 함께 제주교류계통의 계통특성도 같이 고려되어야 한다. 이를 위해서는 제주-해남 HVDC와 제주교류계통을 포함하는 시뮬레이션 모델을 개발하여 다양한 상황에서의 시뮬레이션을 수행하여야 한다. 본 논문에서는 AC계통과 DC 계통의 상호작용에 의한 영향 분석과 교직연계계통의 계통운용 특성에 대해서 EMTDC 제주-해남 HVDC모델과 제주 AC계통 등가축약 모델을 이용하여 분석한 결과를 설명하였다. PSCAD/EMTDC는 EMTP와 더불어 전력시스템의 과도현상 해석을 위한 신뢰성 있는 프로그램이다.

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Impedance Calculation of the Rectangular Power Plane by the Waveguide Model (구형 도파관 모델에 의한 직사각형 전원평면의 임피던스 계산)

  • Park Myun-Joo;Lee Byungje
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.15 no.12
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    • pp.1147-1151
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    • 2004
  • A novel impedance model is proposed fur the rectangular power plane along with the analytic impedance expression derived from it. The power plane is modeled as a section of a rectangular waveguide with appropriate boundary conditions around its periphery. As a result, the derived impedance expression based on the proposed model has the one-dimensional series form, which is simpler and computationally more efficient than the existing formula based on cavity model of the power plane.

An Improved Estimation Model of Server Power Consumption for Saving Energy in a Server Cluster Environment (서버 클러스터 환경에서 에너지 절약을 위한 향상된 서버 전력 소비 추정 모델)

  • Kim, Dong-Jun;Kwak, Hu-Keun;Kwon, Hui-Ung;Kim, Young-Jong;Chung, Kyu-Sik
    • The KIPS Transactions:PartA
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    • v.19A no.3
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    • pp.139-146
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    • 2012
  • In the server cluster environment, one of the ways saving energy is to control server's power according to traffic conditions. This is to determine the ON/OFF state of servers according to energy usage of data center and each server. To do this, we need a way to estimate each server's energy. In this paper, we use a software-based power consumption estimation model because it is more efficient than the hardware model using power meter in terms of energy and cost. The traditional software-based power consumption estimation model has a drawback in that it doesn't know well the computing status of servers because it uses only the idle status field of CPU. Therefore it doesn't estimate consumption power effectively. In this paper, we present a CPU field based power consumption estimation model to estimate more accurate than the two traditional models (CPU/Disk/Memory utilization based power consumption estimation model and CPU idle utilization based power consumption estimation model) by using the various status fields of CPU to get the CPU status of servers and the overall status of system. We performed experiments using 2 PCs and compared the power consumption estimated by the power consumption model (software) with that measured by the power meter (hardware). The experimental results show that the traditional model has about 8-15% average error rate but our proposed model has about 2% average error rate.

A Cache Hit Ratio based Power Consumption Model for Wireless Mesh Networks (무선 메쉬 네트워크를 위한 캐시 적중률 기반 파워 소모 모델)

  • Jeon, Seung Hyun;Seo, Yong-jun
    • Journal of Industrial Convergence
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    • v.18 no.2
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    • pp.69-75
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    • 2020
  • Industrial IoT has much interested in wireless mesh networks (WMNs) due to cost effectiveness and coverage. According to the advance in caching technology, WMNs have been researched to overcome the throughput degradation of multihop environment. However, there is few researches of cache power consumption models for WMNs. In particular, a wired line based cache power consumption model in content-centric networks is not still proper to WMNs. In this paper, we split the amount of cache power from the idle power consumption of CPU, and then the cache hit ratio proportional power consumption model (CHR-model) is proposed. The proposed CHR-model provides more accurate power consumption in WMNs, compared with the conventional cache power efficiency based consumption model (CPE-model). The proposed CHR-model can provide a reference model to improve energy-efficient cache operation for Industrial IoT.

Extension of MARTE Profile for Model-based Power Consumption Analysis of Embedded Software with UML 2.0 (UML 2.0을 사용한 모델 기반의 임베디드 소프트웨어 소모 전력 분석을 위한 MARTE Profile의 확장)

  • Pyeon, Ho-Rim;Kim, Jong-Phil;Hong, Jang-Eui
    • Journal of KIISE:Software and Applications
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    • v.37 no.4
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    • pp.252-263
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    • 2010
  • The needs of low-power embedded software are being increased. Along with the needs, the studies to predict the power consumption of embedded software are also being increased. Although existing studies for power analysis have been performed in source code-based, these code-based analysis have some shortages of long analysis time and much feedback efforts. Recently some studies of power analysis based on software models are prompted. This paper describes on the model-based approach using UML diagrams in embedded software development process. Specially we focus on the extension of OMG's MARTE Profile to support model-based analysis. The MARTE extension gives the possibility of power analysis using just UML diagrams without any other analysis model in embedded software development.

A Design of CIM based Network Modeler (CIM 기반 Network Modeler 설계)

  • Jung, Nam-Joon;Yang, Il-Kwon;Ko, Jong-Min;Oh, Do-Eun
    • Proceedings of the KIEE Conference
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    • pp.1875-1876
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    • 2008
  • 네트웍 모델러(Network Modeler)는 EMS 시스템에서 전력 네크워크 토폴로지(Network Topology)를 입력하기 위한 도구이다. 네트워크 모델러는 토폴로지 정보를 입력하여 모델을 생성하고 변경하는 일과 네트워크 다이어그램을 생성하는 일 등을 처리한다. 모델을 생성하기 위해 계통요소를 나타내는 심벌을 마우스로 움직여 화면에 배치하고 각 요소의 파라미터를 설정하며 작성된 전력계통 구성이 올바른지 검사하는 기능도 수행한다. 네트워크 모델러는 주로 EMS에서 사용되었고 SCADA 시스템에서는 사용되지 않았으나, 최근 개발되고 있는 SCADA 시스템은 네트워크 모델러를 함께 포함하여 시스템의 기능을 향상시키고 있다. 그러나 기존의 Network Modeler가 EMS 시스템 개발 벤더에 따라 다른 데이터 구조를 가지고 있어서 데이터의 상호 운용성이 떨어지고, 입력방법에 있어서도 자동화 및 자료 연계가 미흡하여 관리에 많은 시간이 소요되는 단점을 가지고 있다. 본 논문에서는 CIM 기반으로 정의된 데이터 모델을 사용자가 그래픽 다이어그램을 이용하여 쉽게 네트워크 토폴로지를 정의하도록 하고, 입력정보의 상호 운영성이 향상된 CIM 기반 Network Modeler를 설계한 내용을 설명하도록 한다.

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