• Title/Summary/Keyword: Wind farm

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The Study of Onshore Wind Farm Suitability Analysis Process (육상풍력 적지분석 프로세스에 대한 연구)

  • Ko, Jung-Woo;Lee, Byung-Gul
    • Journal of Environmental Science International
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    • v.25 no.3
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    • pp.457-464
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    • 2016
  • The most wind farm development process in Korea still have not been defined since the history of the wind farm development experiences are very short compared to EU and other developed countries. Therefore, most wind farm development company and researchers have a lot of trouble to implement the wind farm development and need a guideline for the process. Establishing the wind farm needs a complex processes such as transportation system, construction conditions, natural environment and wind conditions etc. Specially, for the restricted development area, the social negotiation and legal minds are necessary. In the case, the decision making process of suitable wind farm area using GIS tool is very useful. However, before using GIS technique, we should understand the development processes and the items for surveying tools. Recently, suitability analysis of selecting Onshore Wind Farm has been studied to consider exclusion analysis to solve the limited develop condition problem. This paper proposed the onshore wind farm development process which can suitable to Korea wind farm environment based on European guideline with GIS tool. To estimate the processes, the processes are divided into two parts, the basic design and wind farm planning. Next, the planning stages are classified into five stages in which the factors for each step were considered.

Hardware-in-the-loop Simulation Method for a Wind Farm Controller Using Real Time Digital Simulator

  • Kim, Gyeong-Hun;Kim, Jong-Yul;Jeon, Jin-Hong;Kim, Seul-Ki;Kim, Eung-Sang;Lee, Ju-Han;Park, Minwon;Yu, In-Keun
    • Journal of Electrical Engineering and Technology
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    • v.9 no.5
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    • pp.1489-1494
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    • 2014
  • A hardware-in-the-loop simulation (HILS) method for a wind farm controller using a real time digital simulator (RTDS) is presented, and performance of the wind farm controller is analyzed. A 100 MW wind farm which includes 5 MW wind power generation systems (WPGS) is modeled and analyzed in RSCAD/RTDS. The wind farm controller is implemented by using a computer, which is connected to the RTDS through transmission control protocol/internet protocol (TCP/IP). The HILS results show the active power and power factor of the wind farm, which are controlled by the wind farm controller. The proposed HILS method in this paper can be effectively utilized to validate and test a wind farm controller under the environment in practice without a real wind farm.

Economic Evaluation of Offshore Wind Farm in Korea (국내 해상풍력발전단지의 경제성 분석)

  • Min, Chang-Gi;Hur, Don;Park, Jong Keun
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.9
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    • pp.1192-1198
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    • 2014
  • With an increase in the penetration of offshore wind farm, the need of an accurate economic evaluation of offshore wind farm has become crucial. This paper presents an economic evaluation method of offshore wind farm in Korea reflecting the cost of offshore wind farm infrastructure (offshore substation, submarine cable and foundation) in its cost model. Each cost of offshore substation, submarine cable, and foundation is represented as a function of installed capacity, distance to shore, and water level, respectively. We have applied the method to the case study of offshore in Jeju Island and analyzed the economics under various conditions. The results show that the distance to shore is of importance in economics of offshore wind farm.

A Study on the STATCOM Application for Efficient Operations of Wind Farm (풍력발전단지의 효율적인 운전을 위한 STATCOM 적용 가능성 연구)

  • 장성일;최정환;박인기;황혜미;최돈만;김광호;유능수
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.52 no.5
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    • pp.250-256
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    • 2003
  • In this papur, the STATCOM (STATic synchronous COMpensator) application for efficient operations of wind farm is described. The wind farm connected with the electric power network is one of good alternative energy sources. However, it would be also highly possible that interconnection of wind farm causes unwanted influences on distribution system operation, protection and control. This paper proposes the STATCOM application for reducing the negative effects from interconnection of wind farm with distribution networks. The simulation results show that STATCOM would be on effective and useful device to resolve the bad influences from wind farm on distribution networks and improve the operational efficiency of wind farm. In the simulation, the radial distribution network of IEEE 13 bus was modeled using PSCAD/EMTDC.

A Study on the Optimal Operation Schemes for Large-scale Wind Farm (대규모 풍력 발전 단지의 최적운영 방안 연구)

  • Jeon, Young-Soo;Choy, Young-Do
    • The Transactions of the Korean Institute of Power Electronics
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    • v.14 no.5
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    • pp.365-371
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    • 2009
  • This paper studies the optimal operation schemes for large scale wind farm. With few operation experiences and fundamental technology for the wind farm, there is a difficult to establish the grid code which is the standard for connecting wind farm to power system. Analysis of the grid code and the operation of other nations for wind farm is used to propose the optimal operation schemes for large-scale wind farm considering the characteristic of our power system, by analyzing the influence of power system by wind farm at Cheju island.

Study of Wind Farm Model Configuration for WFMS simulation (WFMS 모의를 위한 풍력발전단지 모델 구성 연구)

  • Kim, Hyunwook;Jung, Seungmin;Hwang, Pyeong-Ik;Yoo, Yeuntae;Song, Sungyoon;Jang, Gilsoo
    • Proceedings of the KIEE Conference
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    • pp.247-248
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    • 2015
  • Wind turbines causes instabilities on the grid as their penetration increase. To mitigate harmful effects from wind turbines, transmission system operator(TSO) set up some requirements to obligate for wind generation operator for grid connection. So wind farm management system(WFMS) has important role to follow requirement from TSO, WFMS calculates available real power by considering wake effects, and dispatches real power order to each wind turbine in wind farm to optimize for decreasing load fatigue. To verify operation of WFMS, real-time simulator(RTS) is necessary. This paper deals with RTS configuration to verify WFMS operation. RTS includes wind farm model and power flow code. Normally, wind farm equivalent simple model makes wind turbines in wind farm to one wind turbine mode which cannot verify power flow in wind farm and WFMS operation. Thus, this paper makes wind farm model using simple wind turbine model with transfer function. Matlab is used for make power flow code and wind farm model to impose RTS and those model is certified by PSCAD/EMTDC.

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Improvement in Active Power Control Methods for a Wind Farm Based on Modified Wind Turbine Control in Danish Grid Codes

  • Sim, JunBo;Song, Il-Keun;Lee, Yongseung;Lee, Hak-Ju;Choi, Yun-Hyuk
    • Journal of Electrical Engineering and Technology
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    • v.13 no.4
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    • pp.1438-1449
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    • 2018
  • The importance of power system stability has been emphasized with an increase of wind energy penetration in the power system. Accordingly, the guarantee on various control capabilities, including active and reactive power control of wind farms, was regarded as the most important aspect for the connection to the grid. To control the wind farm active power, the wind farm controller was introduced. The wind farm controller decides the power set points for each wind turbine generating unit and each wind turbine generating unit controls its power according to the set points from the wind farm controller. Therefore, co-relationship between wind farm controller and wind turbine controllers are significantly important. This paper proposes some control methods of wind farm active power control based on modified wind turbine control for power system stability and structures to connect wind turbine controllers to wind farm controller. Besides, this paper contributes to development of control algorithm considering not only electrical components but also mechanical components. The proposed contributions were verified by full simulation including power electronics and turbulent wind speed. The scenario refers to the active power control regulations of the Eltra and Elkraft system in Denmark.

Case Study of Wind Farm Design Using OpenWind - Youngdeok Wind Farm (OpenWind를 이용한 풍력단지설계 사례연구 -영덕풍력단지)

  • Kim, Hyun-Goo;Hwang, Hyo-Jeong;Kim, Ju-Hyun;Ko, Soo-Hee;Jung, Woo-Sik
    • Journal of Environmental Science International
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    • v.19 no.9
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    • pp.1169-1175
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    • 2010
  • A case study for the design of a wind farm in complex terrain was carried out using the wind farm site analysis software OpenWind, which has an open-source platform and is free to use. The Youngdeok Wind Farm, constructed on mountainous terrain in Korea, was chosen as a model site; the design process reproduced using OpenWind. A comparison of the positions of the wind turbine derived from the OpenWind optimization process and the current positions were in good agreement. The annual energy production predicted by OpenWind compared with the prediction by the micrositing software, WindSim, were also validated to within 1%. Therefore, it was confirmed that OpenWind can be used for a practical wind farm design project. It is also anticipating that this paper will provide a prototype process for the design of a wind farm site and offer a database for the post-evaluation of a constructed wind farm in Korea.

Determination of the HESS Capacity for Mitigation of Fluctuation of Wind Farm Output under Consideration of Disconnecting Wind Farm (풍력발전단지 탈락 시를 고려한 단지 출력 변동 저감을 위한 HESS의 용량 산정)

  • Kim, SeongHyun;Ko, JiHan;Kim, Eel-Hwan
    • Proceedings of the KIPE Conference
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    • pp.388-389
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    • 2013
  • This paper presents the method for the fluctuation smoothing control by using relaxation time variable control of battery. When the output power of wind farm is changed suddenly, it is necessary to control the output power of wind farm. The smoothing relaxation time is changed within limits of battery output power. Using the hybrid energy storage system (HESS) combined with battery energy storage system and electric double layer capacitor, it is possible to control the output power of wind farm. The capacity of battery is determined by considering the case of the disconnecting wind farm from the grid. To verify the proposed method, simulations are carried out by using PSCAD/EMTDC with actual data of wind farm in the Jeju Island.

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A Protective Scheme for Wind Farm Interconnected to Distribution System (풍력발전단지가 연계된 배전계통에서의 보호방안)

  • Kim, Kyoung-Ho;Lee, Jong-Beom;Seo, Je-Ho
    • Proceedings of the KIEE Conference
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    • pp.478-480
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    • 2002
  • Wind energy can be conversed into electrical power using wind generator. Wind farm is made up of many wind generators, and it is often interconnected into distribution system to supply power for utilities. There are many protection problems on distribution system connected with Wind farm. It can effect on power quality severely when faults are occurred on distribution line or Wind farms. Therefore the correct protective scheme must be set for distribution system which has a Wind farm. In this paper, A wind farm connected into distribution line is simulated with several fault types which can be occurred on distribution line and Wind farm using PSCAD/EMTDC. And this paper proposes necessary relays to protect both sides of distribution system and wind farm.

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