KEPCO Journal on electric power and energy最新文献_第3页

Application of Dynamic Model for Steam Turbine and its Parameter Estimation in a Fossil Fired Power Plant 汽轮机动态模型及其参数估计在某火电厂的应用

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.409

I. Choi, J. Woo, Byoung-Wook Kim, G. Son

引用次数: 0

Development of Supply Capability Calculation and Prediction Technology for Generator 发电机供电能力计算与预测技术的发展

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.425

Euihwan Kim, Youngmo An, E. Hong

引用次数: 0

Greedy Technique for Smart Grid Demand Response Systems 智能电网需求响应系统的贪心技术

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.391

Laihyuk Park, Jaehyeon Eom, Joongheon Kim, Sungrae Cho

引用次数: 0

Performance Analysis of Gas Turbine for Large-Scale IGCC Power Plant 大型IGCC电厂燃气轮机性能分析

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.415

Y. Joo, Mi-Yeong Kim, Seik Park, D. Seo

{"title":"Performance Analysis of Gas Turbine for Large-Scale IGCC Power Plant","authors":"Y. Joo, Mi-Yeong Kim, Seik Park, D. Seo","doi":"10.18770/KEPCO.2016.02.03.415","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.03.415","url":null,"abstract":"As the need for clean coal technology has grown, so has the global research and development efforts into integrated gasification combined cycle (IGCC) plants. An IGCC plant couples a gas turbine to a gasification block. Various technical and economic problems exist in designing such a system. One such problem is the difficulty in realizing economies of scale because the single-train flow capacity of commercial IGCC synthetic gas turbine plants is limited; the capacity does not exceed a net power rating of 300 MW. To address this problem, this study modeled and simulated a synthetic gas turbine with the goal of evaluating the feasibility of a 500 MW or larger IGCC plant. First, a gas turbine with the best output and efficiency was chosen for use with natural gas. The turbine was modeled using GateCycle (a simulation tool), and the integrity of the model validated by comparing the result to the design value. Next, off-design modeling was carried out for a gas turbine with synthetic gas based on its on-design model, and the result was compared with the study result of the gas turbine manufacturer. The simulation confirmed that it is possible to create a large capacity IGCC plant by undertaking the remodeling of a gas turbine designed to use natural gas into one suitable for synthetic gas.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"85 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116470472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Allocation of Energy Storage Capacity for Large Wind Farms in Korea using Discrete Fourier Transform 离散傅里叶变换在韩国大型风电场储能容量分配中的应用

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.377

S. Moon, R. Labios, B. Chang, Soo-yeol Kim, Yong-Beum Yoon

{"title":"Allocation of Energy Storage Capacity for Large Wind Farms in Korea using Discrete Fourier Transform","authors":"S. Moon, R. Labios, B. Chang, Soo-yeol Kim, Yong-Beum Yoon","doi":"10.18770/KEPCO.2016.02.03.377","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.03.377","url":null,"abstract":"In 2013, a total capacity of 591.3 MW of installed wind power generation was achieved in Korea, with a total of 1,139 MWh of wind energy generated that year. More wind power plants will be installed in the coming years, and it is important to develop methods to reduce the output variability of these resources so as to provide stable power to the power grid of Korea. In this regard, this paper proposes the use of energy storage system (ESS) as a means to stabilize the output variability of wind power plants. Presented in this paper is a method that uses Discrete Fourier Transform (DFT) to determine the ESS capacity needed to provide a stable power output for ancillary services such as frequency regulation, economic dispatch, and emergency reserves. In the first step of the proposed method, four regions (namely, Samdal, Yeongdeok, Yeongyang, and Gangwon) in Korea that had the most wind power generation capacity were selected for analysis. In the second step, the individual and aggregated wind power outputs of the selected regions in 2013 were obtained This information was then used in the third step, where DFT analysis of the power outputs was used to drive the magnitudes of the output variation. And finally, the ESS capacity requirements needed to provide different ancillary services were determined based on the magnitudes of the output variation.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123313846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Release of Ammonia Odor from AAFA (Ammonia Adsorbed Fly Ash) by Installation of NOx Reduction System 安装氮氧化物还原系统对氨吸附飞灰中氨气味的释放

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.437

Jaekwon Kim, Seok-Un Park, Hyun-dong Lee, Junjie Chi

{"title":"Release of Ammonia Odor from AAFA (Ammonia Adsorbed Fly Ash) by Installation of NOx Reduction System","authors":"Jaekwon Kim, Seok-Un Park, Hyun-dong Lee, Junjie Chi","doi":"10.18770/KEPCO.2016.02.03.437","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.03.437","url":null,"abstract":"This paper discussed the effect of ammonia concentration adsorbed on fly ash for the ammonia emission as AAFA (Ammonia Adsorbed Fly Ash) produced from coal fired plants due to operation of NOx reduction technologies was landfilled with distilled or sea water at closed and open systems, respectively. Ammonia bisulfate and sulfates adsorbed on fly ash is highly water soluble. The pH of ammonium bisulfate and sulfate solution had significant effect on ammonia odor emission. The effect of temperature on ammonia odor emission from mixture was less than pH, the rate of ammonia emission increased with increased temperature when the pH conditions were kept at constant. Since AAFA increases the pH of solution substantially, NH3 in the ash can release the ammonia order unless it is present at low concentration. NH4 ion is unstable in fly ash and water mixtures of high pH at open system, which is changed to nitrite or nitrate and then released as ammonia gas. The proper conditions for < 20 ppm of ammonia concentration released from the AAFAs landfilled in ash pond were explored using an open system with sea water. It was therefore proposed that optimal operation to collect AAFA of less than 168 ppm ammonia at the electrostatic precipitator were controlled to ammonia slip with less than 5 ppm at SCR/SNCR installations, and, ammonia odor released from mixture of fly ash of 168 ppm ammonia with sea water under open system has about 20 ppm.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124994481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Load and Structural Analysis of an Offshore Wind-Turbine Foundation with Weight Control Functionality 具有自重控制功能的海上风力机基础荷载与结构分析

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.453

M. Oh, Dong-Hyun Kim, Ki-Ha Kim, Seoksoo Kim

引用次数: 1

A Planning study on the VR/AR Common Platform in Electric Power Industry 电力行业VR/AR通用平台规划研究

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.397

Changhun Chae, Minhee Choi, Eungeun Yoo, Chanuk Lim, Jinwoo Park, Nam-Joon Jung

引用次数: 0

A Feasibility Study on Adopting Sliding Pressure Operation for Drum Type Boiler 滚筒式锅炉采用滑压运行的可行性研究

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.403

S. Baek, Hyunhee Kim, Sangbin Park, Young Joo Kim, H. Park

{"title":"A Feasibility Study on Adopting Sliding Pressure Operation for Drum Type Boiler","authors":"S. Baek, Hyunhee Kim, Sangbin Park, Young Joo Kim, H. Park","doi":"10.18770/KEPCO.2016.02.03.403","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.03.403","url":null,"abstract":"In general, drum-type boilers are designed for base load duty and applied under constant pressure operation mode. Recently, however conditions often occur that even drum-type boilers have to operate at partial load conditions. A feasibility study on adopting the sliding pressure operation for drum-type boiler was conducted, and corresponding performance changes and effects on the equipment were analyzed by utilizing a process simulation model. As a result, the conclusion was reached that drum type boilers are able to adopt the sliding pressure operation and can improve of net efficiency at part load operation in spite of the Rankine cycle efficiency reduction due to the decreases in main steam pressure. Because of thank to improvement of high pressure turbine stage-1 internal efficiency and power savings of boiler feed water pump. The sliding pressure operation is advantageous in terms of stress level relief for boiler tube as well as maintaining the rating steam temperature at part load condition. However, cautions are required because the drum boilers have poor dynamic response characteristics which may get worse during the sliding pressure operation.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115347977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kissing of Sub-conductors due to Magnetic Forces in a 154 kV Bundled Overhead Transmission Line 154千伏捆扎架空输电线路中由于磁力引起的子导体接吻

KEPCO Journal on electric power and energy Pub Date : 2016-09-30 DOI: 10.18770/KEPCO.2016.02.03.383

Sang-Beom Kim, Hee-Won Noh, Young-Hong Kim, Kwang-Man Ko, Jong-Hyuk Park, Sang-Soo Kim

引用次数: 0