• Title/Summary/Keyword: Power simulation

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객체지향 모델링에 기반한 발전소 시뮬레이션 툴 개발 (Development of a Power Plant Simulation Tool Based on Object-Oriented Modeling)

  • 전상규;손기헌
    • 한국시뮬레이션학회:학술대회논문집
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    • 한국시뮬레이션학회 2004년도 춘계학술대회 논문집
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    • pp.136-140
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    • 2004
  • A power-plant simulation tool has been developed for training the plant operators and testing a plant control system. The simulation tool is composed of a graphic editor, a component model builder and a system simulation solver. Such new programing techniques as object-oriented modeling and GUI(Graphical User Interface) are employed in developing the simulation tool. The graphic editor is based on the OpenGL library for effective implementation of GUI while the component model builder is based on object-oriented programming for efficient generalization of component models. The developed tool has been verified through the simulation of a real power plant.

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대규모 계통의 디지털 시뮬레이션을 위한 계통분할 기법이 관한 연구 (A Study on Power System Decomposition Technique for Digital Simulation of Large Power System)

  • 이철균;이진;김태균
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 추계학술대회 논문집 전력기술부문
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    • pp.171-173
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    • 2002
  • This paper presents a power system decomposition technique for digital simulation of large power system. To decompose power system, distributed transmission line model is used. But this model can be used only for long transmission lines. In this paper, capacitor compensation method is proposed to use distributed transmission line model for short transmission line. And case study shows proposed method can be used for effective power system decompositon in digital simulation of large power system.

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Wide-area Frequency-based Tripped Generator Locating Method for Interconnected Power Systems

  • Kook, Kyung-Soo;Liu, Yilu
    • Journal of Electrical Engineering and Technology
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    • 제6권6호
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    • pp.776-785
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    • 2011
  • Since the Internet-based real-time Global Positioning System(GPS) synchronized widearea power system frequency monitoring network (FNET) was proposed in 2001, it has been monitoring the power system frequency in interconnected United States power systems and numerous interesting behaviors have been observed, including frequency excursion propagation. We address the consistency of a frequency excursion detection order of frequency disturbance recorders in FNET in relation to the same generation trip, as well as the ability to recreate by power systems dynamic simulation. We also propose a new method, as an application of FNET measurement, to locate a tripped generator using power systems dynamic simulation and wide-area frequency measurement. The simulation database of all the possible trips of generators in the interconnected power systems is created using the off-line power systems dynamic simulation. When FNET detects a sudden drop in the monitoring frequency, which is most likely due to a generation trip in power systems, the proposed algorithm locates a tripped generator by finding the best matching case of the measured frequency excursion in the simulation database in terms of the frequency drop detection order and the time of monitoring points.

EMTP를 이용한 전압 불안정 현상의 동적 시뮬레이션 (A Dynamic Simulation of Voltage Instability Using EMTP)

  • 허정용;김철환
    • 대한전기학회논문지:전력기술부문A
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    • 제52권6호
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    • pp.295-300
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    • 2003
  • Voltage instability has been studied for some decade now. But, There is not generally accepted definition of voltage instability because of the complex phenomenon and the variety of ways in which it can manifest itself. Both IEEE and CIGRE have the respective definitions. The areas of voltage instability research are the analysis, simulation and countermeasure of voltage instability. It needs to model the components of the power system to simulate the voltage instability and voltage collapse. At the beginning, the static simulation was used. This method provides the voltage stability indices and it requires less CPU resource and gives much insight into the voltage and power problem. However, it is less accurate than the dynamic simulation peformed in the time domain simulation. So, when it appears difficult to secure the voltage stability margin in a static stability, it is necessary to perform the dynamic simulation. To perform time-domain simulation, we have to model the dynamic component of the power system like a generator and a load. The dynamic simulation provides the accurate result of the voltage instability. But, it is not able to provide the sensitivity information or the degree of stability and it is time consuming and it needs much CPU resource. In this Paper, we perform a dynamic simulation of voltage instability and voltage collapse using EMTP MODELS. The exponential load model is designed with MODEIS and this load model is connected with test power system. The result shows the process of voltage change in time domain when the voltage instability or voltage collapse occurs.

전기추진선박의 통합전력계통 시뮬레이션 모델에 관한 연구 (A Study Integrated-Power-System Simulation Model of All-Electric-Ship)

  • 구현근;곽기곤;김장목
    • 전력전자학회논문지
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    • 제20권1호
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    • pp.45-50
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    • 2015
  • The simulation model of All-Electric-Ship consists of electrical and mechanical systems. Running the total simulation requires considerable time and causes a lack of computer memory, because the two systems have different dynamic characteristics. Therefore, integrated simulation is practically impossible. This paper proposes the simplified model of electrical system to reduce simulation time significantly, compared to the detailed model. The validity of the proposed simplified model is verified by comparing detailed and simplified simulation results. Thus, the simplified models are applied to the integrated system. As a result, total system simulation can be implemented.

플랜트 동특성 해석용 소프트웨어 개발 및 초임계압 관류형 보일러에의 적용 (Development of Dynamic Simulation Software for Power Plant and its Application to Once-Through Boiler)

  • 이기현;이동수;조창호
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2000년도 추계학술대회논문집B
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    • pp.656-661
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    • 2000
  • In the recent trend of electric power supply market, a variable pressure operation supercritical once-through steam generator is highlighted as a thermal power plant for cycling load because of its superiority in load regulation. Almost all thermal power plants of the future are expected to be variable pressure operation supercritical once-through units. APESS(Advanced Plant Engineering & Simulation System) is a dynamic simulation software for power plant which is under being developed by Korea Heavy Industries & Construction Co., Ltd. This paper present the introduction of APESS and the result of simulation for variable pressure operation supercritical once-through steam generator.

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전력 능동 필터의 설계 및 시뮬레이션 (Design and Simulation of Active Power Filter)

  • 정동열;박종연;방선배
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2003년도 하계종합학술대회 논문집 V
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    • pp.2629-2632
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    • 2003
  • This paper presents the harmonics rejection technique and the simulation of a active power filter using power operational amplifier. The proposed active power filter consists of CT(current transformer), harmonics detector and harmonics amplifier. The harmonics detector is a high pass filter using a GIC(Generalized Impedance Converter). The harmonics amplifier consists of a power operational amplifier and passive filters. The simulation has been implemented by OR-CAD program. It is examined whether the proposed active power filter can be realized or not through simple experiments.

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실험실습을 강화한 학부과정에서의 전력전자공학 교육에 관한 연구 (Study on Education of Power Electronics Engineering in Undergraduate Course focusing Experiments and simulation)

  • 지준근
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2002년도 전력전자학술대회 논문집
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    • pp.639-642
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    • 2002
  • In this paper the method which can intensify effect of education and experiment in the subject of power electronics Is Introduced. Besides theoretical lectures by textbook during 3 hours a week, students can out the simulation and experiment using PSIM, special simulation program for power electronics, and 'Power Electronics Training System', experimental equipments of Lab-Volt Ltd. for power electronics, and 'Data Acquisition & Management System' Thus students can have profound understandings and experiences about various practical situations.

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Measurement and Simulation of Wide-area Frequency in US Eastern Interconnected Power System

  • Kook, Kyung Soo;Liu, Yilu
    • Journal of Electrical Engineering and Technology
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    • 제8권3호
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    • pp.472-477
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    • 2013
  • An internet-based, real-time GPS synchronized wide-area power system frequency monitoring network(FNET) has been monitoring wide-area power system frequency in continuous time in the United States. This paper analyzes the FNET measurement to the verified disturbances in the US eastern interconnected power system and simulates it using the dynamic system model. By comparing the frequency measurements with its simulation results to the same disturbances in detail, this paper finds that the sequence of monitoring points to detect the frequency fluctuation caused by the disturbances is matched well in the measured data and the simulation results. The similarity comparison index is also proposed to quantify the similarity of the compared cases. The dynamic model based simulation result is expected to compensate for the lack of FNET measurement in its applications.

RTDS를 이용한 계통연계형 풍력발전시스템 시뮬레이션에 관한 연구 (Study on the Simulation of Grid Connection Type Wind Power System using RTDS)

  • 김종현;박민원;유인근
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.268-270
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    • 2005
  • A tendency to erect more wind turbines can be observed in order to reduce the environmental consequences of electric power generation. As a result of this, in the near future, wind turbines may start to influence the behavior of electric power systems by interacting with conventional generation and loads. Therefore, wind turbine models that can be integrated into power system simulation software are needed. In this paper, a model that can be used to represent all types of variable speed wind turbines in power system simulations is presented. Wind turbine characteristic equation of a wind turbine is implemented in the RTDS, and the real data of weather conditions are interfaced to the RTDS for the purpose of real time simulation of grid-connection wind power system. The outcomes of the simulation demonstrate the effectiveness of the proposed simulation scheme in this paper. The results show that the cost effective verifying for the efficiency and stability of WPGS.

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