• Title, Summary, Keyword: Wind Energy System

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Smooth Wind Power Fluctuation Based on Battery Energy Storage System for Wind Farm

  • Wei, Zhang;Moon, Byung Young;Joo, Young Hoon
    • Journal of Electrical Engineering and Technology
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    • v.9 no.6
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    • pp.2134-2141
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    • 2014
  • This paper addresses on a wind power system with BESS(Battery Energy Storage System). The concerned system consists of four parts: the wind speed production model, the wind turbine model, configure capacity of the battery energy storage, battery model and control of the BESS. First of all, we produce wind speed by 4-component composite wind speed model. Secondly, the maximum available wind power is determined by analyzing the produced wind speed and the characteristic curve of wind power. Thirdly, we configure capacity of the BESS according to wind speed and characteristic curve of wind speed-power. Then, we propose a control strategy to track the power reference. Finally, some simulations have been demonstrated to visualize the feasibility of the proposed methodology.

The Development of the Monitoring System for Wind resource measurement in onshore wind energy experimental research complex (육상풍력실증연구단지 풍황계측 모니터링 시스템 개발)

  • Ko, Seok-Whan;Jang, Moon-Seok;Lee, Youn-Seop
    • 한국태양에너지학회:학술대회논문집
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    • pp.277-280
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    • 2009
  • Wind monitoring system is an absolutely-required system for assessing a performance and fatigue load of the wind energy generator in an on-shore wind energy experimental research complex. It was implemented for the purpose of monitoring the wind information measured from a meteorological tower at the monitoring house and of utilizing the measured data for the performance assessment, by using the LabVIEW program. Then, by adding the performance assessment-related data acquired from the wind energy generator during the performance assessment and the data recorder for synchronizing the data of meteorological tower, the system was implemented. Because it transmitted the data by converting the output 'RS-232' of data logger which measures the wind condition into CAN protocol, the data error rate was minimized, This paper is intended to explain the developed wind data monitoring system.

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The Power Quality about Wind/Diesel combined power generation in isolated area (고립지역의 풍력/디젤 복합발전 전력품질 특성)

  • Ko, Seok-Whan;Kim, Seok-Woo;Lee, Youn-Seop
    • 한국태양에너지학회:학술대회논문집
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    • pp.245-249
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    • 2009
  • Antarctic King Sejong Station was established in King George Island, the South Pole in 1988, and has been executing the monitoring studies on the change of antarctic natural environment. As an available power, the wind energy generator has been used in the form of hybrid with mainly diesel generator. Because the wind generation power sharply changes by wind energy, it must be careful during the system operation. When the power system becomes stable, the output performance of wind energy generator becomes stable. But, in case of unstable system, the errors frequently occur on the wind energy generator and it badly impacts the power system by output of wind energy generator. The purpose of this paper is to analyze suitability while operating the system of 10kW wind energy generator at Antarctic King Sejong Station, an isolated area, and to analyze the problem and improvements by power quality.

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A Study on Development of Wind Power 400W Generation System with Vertical axis Type (400W 수직형 풍력발전시스템의 개발에 관한 연구)

  • Yoon, Jeong-Phil;Choi, Jang-Kyun;Cha, In-Su
    • New & Renewable Energy
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    • v.2 no.3
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    • pp.23-30
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    • 2006
  • Need developments of substitute energy to solve problem of global warming by excess use of fossil energy, excess discharge of carbon dioxide. wind power generation system is all-important energy in next generation as clean energy. Environmental pollution of wind power generation system is not exhausted entirely. And, electric-power generation system cost is cheap than other energy. Wind Generation system that is supplied much present is most horizontality style blade structure. But, Horizontal style structure is serious noise and there is problem in stability of blade. We designed special blade solve to this problem. And, manufactured vertical axis wind power generation system because using blade. Also, developed assistance power generator to increase driving efficiency ago wind power generation. We expect this devices that is such cover shortcoming of wind power generation system.

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Operational Characteristics of Wind Turbine Generator Systems in Hangwon Wind Farm (행원 풍력발전단지에서 풍력발전시스템의 운전특성)

  • Ko, Kyung-Nam;Kang, Mun-Jong;Huh, Jong-Chul
    • Journal of the Korean Solar Energy Society
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    • v.27 no.1
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    • pp.1-9
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    • 2007
  • This paper reveals both the operational situation and the cause of the error occurred in wind turbine generator system of Hangwon wind farm in Jeju island. The four wind turbines were selected for this work, and the monitored period was for six months. Wind resource in the wind farm was analyzed, and the estimated energy production was compared with the actual energy production. As a result, with a decrease of system error, the estimated energy production was in good agreement with the actual energy production. The errors occurring in components such as gearbox and hydraulic motor affected the Availability of the wind turbine. Also, poor external conditions such as a strong wind, lightning and gust caused a standstill of wind turbines.

A study on the maximum penetration limit of wind power considering output limit of WTGs (풍력발전기 출력제한을 고려한 풍력한계용량 산정에 관한 연구)

  • Kim, Hyeong-Taek;Myeong, Ho-San;Kim, Se-Ho
    • Journal of the Korean Solar Energy Society
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    • v.31 no.6
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    • pp.23-31
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    • 2011
  • The wind energy is one of the most prospective resources in renewable energy. However, the WTGS shouldn't be installed indiscriminately because the power system can be negatively influenced by a variable and uncertain nature of the wind energy. It is the reason why it has to be limited to install the WTGS thoughtlessly mentioned above that support the importance of the maximum penetration limit of wind power. It may required that power system operators suggests a new way of power system operation as percentage of the WTGS increase in the existing power system. The wind power is fixed in a limited area, so using rate of the wind power will be increased by installing additional WTGS. In this paper, we have studied on economic evaluation of the wind capacity increased by restricting the output of the WTGS as the way to increase the wind capacity.

Evaluation of the Wind Power Penetration Limit and Wind Energy Penetration in the Mongolian Central Power System

  • Ulam-Orgil, Ch.;Lee, Hye-Won;Kang, Yong-Cheol
    • Journal of Electrical Engineering and Technology
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    • v.7 no.6
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    • pp.852-858
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    • 2012
  • This paper describes evaluation results of the wind power penetration limit (WPPL) and the wind energy penetration (WEP) in the Mongolian central power system (MCPS). A wind power plant (WPP) in a power system possesses an output power limit because the power system must maintain a balance between the generation and consumption of electricity at all times in order to achieve an adequate level of quality. The instantaneous penetration limit (IPL) of wind generation at a load is determined as the minimum of the three technical constraints: the minimum output, the ramp rate capability, and the spinning reserve of the conventional generating units. In this paper, a WPPL is defined as the maximum IPL divided by the peak load. A maximal variation rate (VR) of wind power is a major factor in determining the IPL, WPPL, and WEP. This paper analyzes the effects of the maximal VR of wind power on the WPPL, WEP, and capacity factor (CF) in the MCPS. The results indicate that a small VR can facilitate a large amount of wind energy while maintaining a high CF with increased wind power penetration.

Assessment of Wind Power Resources for Rural Green-village Planning (농촌 그린빌리지 계획을 위한 풍력에너지 자원분석)

  • Nam, Sang-Woon;Kim, Dae-Sik
    • Journal of Korean Society of Rural Planning
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    • v.14 no.2
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    • pp.25-32
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    • 2008
  • Wind energy, which is one of renewable energy, would be useful resources that can be applied to making energy recycling villages without using fossil fuels. This study analyzed energy potential on wind power considering weather condition in three rural villages and compared with energy consumption surveyed. A wind turbine system in the 5kW class can generate 26.1%, 73.9% and 39.5% of the yearly mean consumption of electric power per house in Makhyun, Boojang and Soso respectively. A 750kW wind turbine system can generate 1.7%, 30.3% and 22.1% of the total amount of electric power consumption in three study villages respectively. Wind power energy density was too low in Makhyun and Soso, so it is determined that the application of wind turbine system is almost impossible. Wind energy potential was generally low in Boojang either, but it is evaluated that there is a little possibility of wind power generation relatively. For practical application of renewable energy to rural green-village planning, assessment of energy potential for the local area should be preceded.

A Study on the Estimation Model of Cost of Energy for Wind Turbines (풍력발전기의 에너지 비용 산출에 대한 고찰)

  • Chung, Taeyoung;Moon, Seokjun;Rim, Chaewhan
    • New & Renewable Energy
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    • v.8 no.4
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    • pp.3-12
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    • 2012
  • Large offshore wind farms have actively been developed in order to meet the needs for wind energy since the land-based wind farms have almost been fully developed especially in Europe. The key problem for the construction of offshore wind farms may be on the high cost of energy compared to land-based ones. NREL (National Renewable Energy Laboratory) has developed a spreadsheet-based tool to estimate the cost of wind-generated electricity from both land-based and offshore wind turbines. Component formulas for various kinds and scales of wind turbines were made using available field data. In this paper, this NREL estimation model is introduced and applied to the offshore wind turbines now under designing or in production in Korea, and the result is discussed.

The Development of the Monitoring System for Power performance using the Lab View (LabView를 이용한 풍력발전 성능평가용 모니터링 시스템 개발)

  • Ko, Seok-Whan;Jang, Moon-Seok;Ju, Young-Chul;Lee, Yoon-Sub
    • Journal of the Korean Solar Energy Society
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    • v.29 no.6
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    • pp.69-74
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    • 2009
  • Monitoring system is an absolutely-required system for assessing a performance and fatigue load of the wind turbine in an on-shore wind energy experimental research complex. It was implemented for the purpose of monitoring the wind information measured from a meteorological tower at the monitoring house, and of utilizing the measured data(fatigue data and electric analyzing data of wind turbine)for the performance assessment, by using the LabVIEW program. Then, by adding the performance assessment-related data acquired from the wind turbine during the performance assessment and the data recorder for synchronizing the data of meteorological tower, the system(BusDAQ) was implemented. Because it transmitted the data by converting the output 'RS-232' of data logger which measures the wind condition into CAN protocol, the data error rate was minimized. Also, This paper is introduced to make the best use of the developed monitoring system and to explain about construct of the system and detailed data communication of its system.