International Journal of Electrical Energy最新文献_第4页

Research on Cold Storage Multi-objective Optimal Operation with Photovoltaic Power Generation 光伏发电冷库多目标优化运行研究

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/ijoee.5.2.101-105

Bo Hu, Tao Wang, Penghui Li, Fei Qu, Chao Ji, Liang Kong, Heng Du, Hai-yan Wang

{"title":"Research on Cold Storage Multi-objective Optimal Operation with Photovoltaic Power Generation","authors":"Bo Hu, Tao Wang, Penghui Li, Fei Qu, Chao Ji, Liang Kong, Heng Du, Hai-yan Wang","doi":"10.18178/ijoee.5.2.101-105","DOIUrl":"https://doi.org/10.18178/ijoee.5.2.101-105","url":null,"abstract":"As the total amount of cold storage increasing year by year, the disorderly access of heavy power load will make the power grid peak and valley difference increase. At the same time, the high operating cost will also increase the burden of users, so the optimal operation of the cold storage is crucial. Based on the TOU price policy, the optimal operation model of cold storage is established with the objective function of minimizing the operating cost and the load power variance. The optimal operation strategy of cold storage is solved by membership function and particle swarm algorithm, and the load and start of cold storage are calculated according to the 0-1 knapsack algorithm. The influence of different price on the operation strategy is analyzed. Making a garlic market in Henan as example analysis, shows the results that considering the PV and TOU case, optimal control strategy to reduce operating costs and power grid peak valley difference has obvious advantages, in which the cost saving rate in cold season and boom season are 199.4% and 92.6% respectively. 1","PeriodicalId":13951,"journal":{"name":"International Journal of Electrical Energy","volume":"12 1","pages":"101-105"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78582263","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: 1

Determination of Electromagnetic Radiation Levels at Two Primary Schools near Base Stations 测定基站附近两所小学的电磁辐射水平

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/IJOEE.5.1.49-53

L. Seyfi

{"title":"Determination of Electromagnetic Radiation Levels at Two Primary Schools near Base Stations","authors":"L. Seyfi","doi":"10.18178/IJOEE.5.1.49-53","DOIUrl":"https://doi.org/10.18178/IJOEE.5.1.49-53","url":null,"abstract":"In today’s world, technological devices use for nearly every type of work is so much popular. These devices such as cellular phone, tablet, laptop, etc. facilitate and expedite our daily personal and technical works. Together with their advantages, disadvantages of them are also possible. Cellular phones work together with base stations mounted in residential areas while they are providing communication service to community. Base stations forward a call started from a cellular phone to the radio network controller. Then, the radio network controller forwards the call to another base station giving service to the called cellular phone. Cellular phones can communicate with base stations without a cable connection via radiation of electromagnetic (EM) waves. This type of EM radiation is called as non-ionizing radiation. As a result of researches carried out up to now, adverse health effect of radiation emitted from cellular phones and base stations is not certain. However, long term researches should be completed to show exact health effects of it on human health. In this context, till this topic is obvious and proved, we should be cautious about their radiation. Also, exposure levels of their radiation should be technically monitored periodically. This situation is of great importance for especially vulnerable groups of general public such as older, sick people, and kids. For these reasons, in this study, measured electromagnetic radiation levels at two primary schools near base stations in Konya, Turkey were recorded and analyzed according to the standard values determined by International Commission on Non-Ionizing Radiation Protection (ICNIRP) and Information and Communication Technologies Authority (ICTA) in Turkey.","PeriodicalId":13951,"journal":{"name":"International Journal of Electrical Energy","volume":"79 1","pages":"49-53"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83784884","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: 6

LVRT Capability Assessment of Grid Code Frequency Responsive VSWTG 电网码频响应VSWTG的LVRT能力评估

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/IJOEE.5.1.14-21

A. Aziz, Amanullah Mto, A. Stojcevski

引用次数: 0

An Improvement Approach Based on the Label Correlation for Automatic Image Annotation 一种基于标签相关性的图像自动标注改进方法

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/ijoee.5.1.96-100

C. Jin, Jinan Liu

引用次数: 0

Implementation of Expert System for Power System Voltage Stability Improvement 电力系统电压稳定性改进专家系统的实现

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/IJOEE.5.1.65-70

A. Lomi, F. Limpraptono

{"title":"Implementation of Expert System for Power System Voltage Stability Improvement","authors":"A. Lomi, F. Limpraptono","doi":"10.18178/IJOEE.5.1.65-70","DOIUrl":"https://doi.org/10.18178/IJOEE.5.1.65-70","url":null,"abstract":"This paper presents a concept of an expert system to monitor and improve the voltage stability condition in a power system based on the L-index of load busses. This index uses the load flow analysis information from the steady state voltages condition and is in the range of 0 which is indicated for no load condition to 1 which is indicated for voltage collapse. For improving the voltage stability index the control variable consists of switchable shunt VAR compensators (SVC), OLTC transformers and generator excitation. The control of voltage collapse is based on reducing the magnitude of L-indices of critical bus for a given system operating condition based on heuristic criteria using the sensitivities (change in L-index) of load busses to different reactive power control variables. These sensitivities are stored in the knowledge base of expert system in the form of facts called voltage stability control lists. The expert system identifies the critical load busses whose L-index values are above acceptable limits. The expert system selects the corresponding voltage stability control list and recommends control action at the most effective compensator. The proposed expert system technique has been tested on a standard test system. Results obtained for a modified IEEE-30 bus standard test system are presented for illustration purposes. ","PeriodicalId":13951,"journal":{"name":"International Journal of Electrical Energy","volume":"51 1","pages":"65-70"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86171626","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: 1

Electronically Tunable Current-Mode Square-Root-Domain First Order All-Pass Filters and Their Quadrature Oscillator Applications 电子可调谐电流模式平方根域一阶全通滤波器及其正交振荡器应用

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/IJOEE.5.1.42-48

F. Z. Adalar, A. Kircay, M. S. Keserlioglu

引用次数: 0

Sliding Mode Control with MPPT for DFIG to Improve the Dynamic Performance 基于MPPT的DFIG滑模控制以提高动态性能

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/IJOEE.5.1.34-41

V. Gopala, Y. Obulesu

{"title":"Sliding Mode Control with MPPT for DFIG to Improve the Dynamic Performance","authors":"V. Gopala, Y. Obulesu","doi":"10.18178/IJOEE.5.1.34-41","DOIUrl":"https://doi.org/10.18178/IJOEE.5.1.34-41","url":null,"abstract":"Linearization approach is the common practice used to address the control problem of wind based turbines; generally, it is tedious and not good because of unavoidable uncertainties and vague operating conditions present in the system which leads to indigent system performance with low reliability. Therefore the need of dynamic resilient Sliding Mode Controller (SMC) strategy is required to take into account these control problems. In this paper, control of the power generation in wind generator is investigated. The wind energy systems have two operating regions depending on the wind turbine tip-speed ratio, which are distinguished by minimum phase behavior in one of these regions and a non-minimum phase in the other one. In spite of the model uncertainties, to fortify stability in two operating regions and to apply the best possible feedback control solution, a SMC strategy with Maximum Power Point Tracking is proposed in this paper which is applied to Doubly Fed Induction Generator (DFIG). The dynamic performance and power capture is improved in the case of the SMC strategy based DFIG compared to standard control of the DFIG. The proposed SMC strategy and standard control of DFIG are validated by using Fatigue, Aerodynamics, Structures, and Turbulence code (FAST). ","PeriodicalId":13951,"journal":{"name":"International Journal of Electrical Energy","volume":"71 1","pages":"34-41"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89765235","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

Worldwilde Uses of CHP Systems Identification and an Economic Viability Study of the Installations of CHP Systems in a Brazilian Hospital 世界范围内热电联产系统的使用鉴定和在巴西医院安装热电联产系统的经济可行性研究

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/IJOEE.5.1.54-57

E. Watzko, Fernanda Campos Helmeister, Políbio Ícaro Moro Capo, Evandro Cardozo da Silva, L. Martins, D. Marsh

{"title":"Worldwilde Uses of CHP Systems Identification and an Economic Viability Study of the Installations of CHP Systems in a Brazilian Hospital","authors":"E. Watzko, Fernanda Campos Helmeister, Políbio Ícaro Moro Capo, Evandro Cardozo da Silva, L. Martins, D. Marsh","doi":"10.18178/IJOEE.5.1.54-57","DOIUrl":"https://doi.org/10.18178/IJOEE.5.1.54-57","url":null,"abstract":"This paper aims to identify successful cases where Fuel Cell Combined Heat and Power systems (CHP) are used around the world and verify the economic viability of the installation of fuel cell systems for cogeneration in the hospital Polydoro Ernani de São Tiago, located in Florianopolis, Brazil. It was found that large cogeneration systems are indeed existent besides of the use of polymer electrolyte fuel cells (PEMFC) for domestic applications. Japan is an example where CHP are largely used, however in Brazil, where the hydraulic energy is abundant; FC is yet to be more present in the energy generation scenario even though its efficiency is improved when the generation of heat and electricity are combined. A research to find out the electrical and thermal needs of the hospital unit was carried out. In order to supply the unit's needs, three fuel cell systems were analyzed, and the energy generated by three hypothetical systems were priced considering the capital investment in each of these systems as well as its operating costs, based only on their fuel demand. The cost per kWh obtained from each of the three proposed systems was compared with the kWh currently paid by the hospital to the distributor. From this comparison it was found that fuel cell systems are becoming increasingly competitive mainly due to the increase in the cost of energy supplied by the distributor. ","PeriodicalId":13951,"journal":{"name":"International Journal of Electrical Energy","volume":"9 1","pages":"54-57"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75040971","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

Impulse Characteristics of Different Gas Mixtures 不同气体混合物的脉冲特性

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/ijoee.5.1.92-95

E. Onal, A. Bilgin

引用次数: 0

Critical-Bitstream-Based SEU Injection and Validation for Xilinx SRAM-Based FPGAs 基于临界比特流的SEU注入和基于Xilinx sram的fpga验证

International Journal of Electrical Energy Pub Date : 2017-01-01 DOI: 10.18178/IJOEE.5.1.29-33

Yuan Tingting, Chen Lei, L. Xuewu, Shuo Wang, Zhou Jing

引用次数: 0