• Title/Summary/Keyword: PSS 모델링

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Design Factors Identification for a Product-Service Systems Through Utilization Analysis of Smart Devices (스마트기기 이용실태 분석을 통한 제품 - 서비스 시스템의 설계요인 분석)

  • Oh, Hyung-Sool;Park, Roh-Gook
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.7 no.2
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    • pp.55-61
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    • 2012
  • Due to customers' constantly increasing demand for personalized products and services, manufacturing enterprises integrate tangible physical products and intangible services to provide more diverse physical products and services. Many researchers are concerned with Product-Service Systems (PSS) modeling, but we have wondered on the interactions between the product and the service in a PSS. To find relationships between the two in a PSS, the survey results on utilization of smart phone are analysed and compared based on the PSS design framework to identify design factors for PSS.

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A Modelling and Analysis of SSSC and UPFC in Static Analysis of Power Systems (IPLAN을 사용한 SSSC와 UPFC의 모델링과 정태해석에 미치는 영향 분석)

  • 김덕영;조언중;이군재;이지열
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.15 no.6
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    • pp.15-19
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    • 2001
  • This paper presents an modelling and analysis of SSSC and UPFC in static analysis of power systems. SSSC is used to control active power flow in transmission lines by controlling the phase angle of the injected voltage source which is in rectangular to the line current. UPEC is used to control the magnitude and phase of the injected voltage sources which are connected both in series and in parallel with the transmission line to control power flow and bus voltage. To compare the effect of SSSC and UPFC in power system static analysis, the PSS/E simulation program is used. As the FACTS device model such as SSSC and UPFC is not provided in PSS/E yet, an equivalent load model is used. This procedure is implemented by IPLAN which is an external macro program of PSS/E. The simulation results show that UPFC is more effective to improve bus voltage than SSSC in power system static analysis.

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A Study of PSs Modeling of Ulchin N/P #1 by AVR Step Test (AVR 스템시험에 의한 울진 N/P 1호기 PSS 모델링 연구)

  • 김동준;문영환;전동훈;김태균
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.50 no.8
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    • pp.351-358
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    • 2001
  • This paper deals with the PSS modeling of Ulchin N/P #1 as well as the generator and excitation system modeling by utilizing the recorded data from AVR step test, which has been performed by entering small voltage signal into the AVR summing point. In addition to it. two recorded results obtained from the AVR step test with PSS sunning and without PSS running have not only been compared each other on the time domain, but also they heve been analyzed with FFT analysis on the frequency domain; thus, the desirable effects of running PSS in Ulchin N/P #1 on power system have been explicitly confirmed. Finally, the derived PSS model parameters lead to good matches between simulation results and recorded data.

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A Study of PSS Modelling of Ulchin Nuclear Plant Unit #1 by AVR Step Test (측정에 의한 울진 원자력 1호기 PSS 모델링 연구)

  • Kim, D.J.;Moon, Y.H.;Chun, D.H.;Kim, T.K.
    • Proceedings of the KIEE Conference
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    • 2000.11a
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    • pp.152-155
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    • 2000
  • This paper deals with the PSS modelling of Ulchin N/P Unit #1 by utilizing the recorded data from AVR step test. In addition to it, the recorded results obtained from the AVR step test with PSS running and without PSS running are not only compared each other on the time domain but they are also analyzed with FFT on the frequency domain; the desirable effect of running PSS in Ulchin N/P Unit #1 is examined. Finally, the derived PSS model parameters lead to good matches between simulation results and recorded data.

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A Study on Power System Reduction using PSS/E (PSS/E를 이용한 전력계통 축약에 관한 연구)

  • Kim, Jin-Yi;Moon, Seung-Il
    • Proceedings of the KIEE Conference
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    • 2001.11b
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    • pp.299-301
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    • 2001
  • 전력계통 과도현상을 모의해석 하는 실시간 시뮬레이터의 경우 계통 요소들을 자세히 모델링하여 과도 현상을 모의해석 하는 것은 아주 높은 정도의 계산 부담을 치루어야 한다. 특히 이러한 시뮬레이터는 계통 크기의 제한을 가지므로 대규모 계통에 대한 과도현상 해석이 현실적으로 불가능하다. 이러한 이유로 시스템 해석시 중요하다고 여겨지는 부분만을 자세히 모델링하고 나머지 부분은 상대적으로 간단하게 표현하는 축약 계통의 가용이 요구되어진다. 본 논문에서는 국내에서 가장 널리 사용되는 PSS/E를 이용해 얻은 다이나믹 데이터를 축약계통 구성에 그대로 이용할 수 있는 지수를 개발하고 이를 K-Means 알고리즘에 적용시켜 coherent한 발전기 그룹을 식별하였다. 마지막으로 제안하는 방법의 타당성을 검토하기 위하여 IEEE New England 10기 39모선에 대한 계통 축약이 수행되었다.

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PSS Modeling and Cerification for #6 Generator of Boryong T/P (보령 T/P 6호기 PSS 모델링과 검증)

  • Choi, H.K.;Kim, D.J.;Moon, Y.H.;Kim, Y.H.;Yoon, Y.B.
    • Proceedings of the KIEE Conference
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    • 2002.07a
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    • pp.31-34
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    • 2002
  • It studied modelling about employing analog PSS in domestic 500MW grade standard thermoelectric power plant in this paper. Modeling and parameters were verified by simulation of PSS response characteristics measured in AVR step examination and using power plant system model parameters decided by generator characteristics test. Through this PSS modelling research, contributed in domestic electrical power system small signal stability as that do modelling to be possible exact analysis of power system.

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Dynamic Combination of Land Use Planning and Water Planning using GIS, VE and LCC (GIS, 가치공학, 그리고 생애주기비용에 의한 토지이용계획과 상수도계획의 동적인 연계)

  • Kim, Hyeong-Bok
    • 한국공간정보시스템학회:학술대회논문집
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    • 2000.06a
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    • pp.93-105
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    • 2000
  • GIS is a powerful toolbox in managing spatial data associated with attribute data. However GIS is short of spatial analysis function and graphic user interface(GUI) function in dealing with dynamic planning problems. Decision Support Systems(DSS) make up for the shortage of GIS by providing GUI function, modeling function and database function. Spatial Decision Support Systems(SDSS), a new kind of DSS, incorporate display function, basic spatial analysis function and manipulation function of spatial data and attribute data of GIS and GUI function, modeling function and database function of DSS in dealing with spatial planning problems. Planning Support Systems(PSS) add more advanced spatial analysis function and intertemporal function to the functions of SDSS. This study focuses on the modeling of a PSS for capacity expansion of water-distribution network depending upon land use planning by using GIS, value engineering(VE) and life cycle costing(LCC). The PSS shows a guideline about the investment of water-distribution networks related to urban growth management through generating certain numbers of dynamic alternatives to supply the amount of water caused by land use planning.

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Modeling of Hanlim's gas turbine generator & qualitative analysis of PSS operation (한림가스터빈 발전기/제어계의 모델링 및 PSS 동작의 정성적 분석)

  • Choi, K.S.;Moon, Y.H.;Kim, D.J.;Choo, J.B.;Lyu, S.H.
    • Proceedings of the KIEE Conference
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    • 1996.11a
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    • pp.95-98
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    • 1996
  • Response speed of generator/control system kas increased with the aid of the development of power electronics. Even though it is desirable to enhance response speed for the control system(AVR/Gov) of generator itself, in case a certain generator/control system with high response excitation system is connected with bulk power system, terminal voltage and active power of some generators can oscillate with adjoining generators or near area when even a little of disturbance take place. PSS(Power System Stabilizer) is used to damp rotor swing by adding the supplementary signal in phase with speed. As the stable AVR response is very important before PSS is installed, modeling and analysis of generator/control system was performed. Next we have analysed PSS response of Hanlim's gas turbine by transmission line open/close test.

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Characteristic Tests on the Gas Turbine Generator System for Determination and Verification of Model Parameters in a Combined Cycle Power Plant (복합화력발전소 가스터빈 발전기계통 모델정수 도출 및 검증을 위한 특성시험)

  • Kim, Jong Goo;Yoo, Hoseon
    • Plant Journal
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    • v.17 no.4
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    • pp.35-40
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    • 2021
  • In this study, a technical characteristic test was conducted on the gas turbine generator system of Seoincheon Combined cycle no.6 to derive and verify the model constants. As a result of the generator maximum/minimum reactive power limit test, the maximum reactive power limit is 80 MVar and the minimum is -30 MVar. The generator uses the GENROU model, the field time constant (T'do) is 4.077 s, and the inertial constant (H) is 5.461 P.U. Excitation system used ESST4B model to derive and verify model constants by simulating no-load 2% AVR step test, PSS modeling derived from PSS2A model constants, and simulated and compared measurement data measured when PSS off/on Did. The GGOV1 model was used for the governor-turbine, and the numerical stability of the determined governor-turbine model constant was verified by simulating a 10% governor step test through the PSS/E simulation program

Parameter Selection Method for Power System Stabilizer of a Power Plant based on Hybrid System Modeling (하이브리드시스템 모델링 기반 발전기 전력시스템 안정화장치 정수선정 기법)

  • Baek, Seung-Mook
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.7
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    • pp.883-888
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    • 2014
  • The paper describes the parameter tuning of power system stabilizer (PSS) for a power plant based on hybrid system modeling. The existing tuning method based on bode plot and root locus is well applied to keep power system stable. However, due to linearization of power system and an assumption that the parameter ratio of the lead-lag compensator in PSS is fixed, the results cannot guarantee the optimal performances to damp out low-frequency oscillation. Therefore, in this paper, hybrid system modeling, which has a DAIS (differential-algebraic-impusive-switched) structure, is applied to conduct nonlinear modeling for power system and find optimal parameter set of the PSS. The performances of the proposed method are carried out by time domain simulation with a single machine connected to infinite bus (SMIB) system.