{"title":"Simplified negative load-based approach versus full HVDC modeling in assessing the HVDC options for the Cape network","authors":"J. Mathebula, M. Gitau, N. Mbuli","doi":"10.1109/EEEIC-2.2013.6737889","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737889","url":null,"abstract":"When planning HVDC connection into an area, many possible receiving end point could be available. To analyze all of them can be laborious and time-consuming. On the other hand, questions may arise as to why some were not considered, thus threatening the validity of the studies. In this paper, preliminary work on comparing loadflow studies to assess receiving end points is presented. Loadflow studies carried at various load levels are compared for a case of using negative load representations of HVDC with a case where a full HVDC model is implemented. Results show good agreement between the voltages obtained at various load levels, meaning that a simple negative load model representation of HVDC has a potential for use in a justifiable, preliminary screening various possible receiving end points in a transparent way.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128761236","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}
{"title":"Experimental study on storage device with relay protection in microgrid mode switching process","authors":"Z. Xiaobo, Zhang Baohui","doi":"10.1109/EEEIC-2.2013.6737900","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737900","url":null,"abstract":"In the switching process of microgrid from the state of being intergrated in external grid to the state of island operation, many devices such as energy storage devices, after sudden disturbance changes its running state, in some extreme cases, this change will overcome the device's affordability, requires the using of relay protection device to avoid further damage. The platform of the microgrid laboratory of xi 'an jiaotong university is used to verified the phenomenon of the microgrid mode switching in extreme circumstances, and points out the importance of reasonable in microgrid relay protection setting, providing a reference direction for the further theory research of control strategy in mode switching.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"44 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113964028","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}
{"title":"The character of refractory organic matter in domestic furnaces","authors":"J. Kuchařová, K. Raclavský, H. Raclavská","doi":"10.1109/EEEIC-2.2013.6737915","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737915","url":null,"abstract":"An identification of individual compounds contained in resistant organic matter of fly dust can contribute to the determination of pollution origin. Analysis using pyrolytic gas chromatography with mass spectrometric detection can determine markers enabling identification of burned material.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134119020","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}
{"title":"Integration of DFIG based wind turbine and PV plant in order to reduce the number of power converters","authors":"M. E. Zarei, B. Asaei, Masoud Etezadi Nezhad","doi":"10.1109/EEEIC-2.2013.6737926","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737926","url":null,"abstract":"This paper presents an integration of doubly fed induction generator (DFIG) and photovoltaic plant which selected controllers show fast and efficient response against environmental changes. Among different methods for tracking maximum power point of solar array like perturb and observe, incremental conductance and etc., an analytical method is employed which shows a great dynamic response and tracking efficiency in different conditions. For the rotor side converter (RSC) and grid side converter (GSC) of the system, predictive direct power control (PDPC) is applied to have fast response, low switching frequency and small power ripple. Therefore by selecting the mentioned control strategies for converters, the whole system operates fast and perfectly. Since the PV plant is added to DFIG, the GSC rating is also investigated. To show the performance of system a 2 MW DFIG and 350kW PV array is utilized and simulated in Matlab/Simulink.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124079306","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}
F. Blanquez, R. M. Caballero, E. Rebollo, C. Platero
{"title":"Improvements to generator differential protection based on the criterion of signs of the DC-component","authors":"F. Blanquez, R. M. Caballero, E. Rebollo, C. Platero","doi":"10.1109/EEEIC-2.2013.6737917","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737917","url":null,"abstract":"Generator differential protection is one of the most important electrical protections of synchronous generator. Its operation principle is based on the comparison of the input current and output current at each phase winding and it allows the trip when the currents are not similar. In many cases, a false differential current causes unwanted trip commands as a result of the saturation of current transformers (CTs). In this paper, the proposed criterion can identify whether it is an external fault or an internal fault in the protection zone and it allows preventing trip commands which have been caused by the saturation of the CTs.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127912001","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}
{"title":"Modified analytical solution for tracking photovoltaic module maximum power point under partial shading condition","authors":"Masoud Etezadi Nezhad, B. Asaei, S. Farhangi","doi":"10.1109/EEEIC-2.2013.6737904","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737904","url":null,"abstract":"Photovoltaic systems application especially mobile applications are subjected to partial shading conditions due to obstacles in the solar irradiation path. Photovoltaic modules facing partial shading condition exhibit a nonlinear and multi-peak output characteristic. Hence, it is important that the global maximum power point through all local maximum power points be tracked. In this paper, an analytical method for tracking the global maximum power point in partial shading condition has been proposed. The proposed method based on an analytical maximum power point tracking method for uniform irradiation condition. The high tracking accuracy and perfect steady state characteristics of the proposed algorithm has been investigated and demonstrated through partial shading condition test on Kyocera KC200GT solar modules in MATLAB/Simulink environment.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132122160","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}
{"title":"Power active filter system implimentation for photovoltaic generation system (PVGS) used in standing alone zones","authors":"M. Madaci, D. Kerdoun, A. Boumassata, N. Cherfia","doi":"10.1109/EEEIC-2.2013.6737886","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737886","url":null,"abstract":"This paper presents an autonomous power generation system implementation destined for the isolated zones consisting of photovoltaic generators and a regulation electronic power converter, since the most of the grids contain a power converter system based on power electronics components which generate harmonic currents and consume reactive power, this phenomena generate some perturbations going from dysfunction to the destruction of the sensitive connected equipment, in this paper we aim to propose a solution to solve this problem using an active filter based on recent methods in the identification of the perturbation this system was installed to the previous generation system to increase the performances of the power generation in the isolated zones.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127234765","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}
{"title":"Evaluation of the grounding circuit measurements for stator ground-fault location of synchronous generators","authors":"F. Blanquez, E. Rebollo, C. Platero","doi":"10.1109/EEEIC-2.2013.6737913","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737913","url":null,"abstract":"Locating stator-winding ground faults accurately is a very difficult task. In this paper the grounding circuit measurements are evaluated in order to obtain information about the stator ground-fault location in synchronous generators. In power generators grounded through a high impedance, the relation between the neutral voltage and the phase voltage provide a first estimation of the fault location. The location error by using this ratio depends on the fault resistance and the value of the capacitance to ground of the stator winding. However, the error added by ignoring the value of the fault resistance is the most relevant term. This location estimation and the location error have been evaluated through the data of a real synchronous machine.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126433757","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}
{"title":"Analysis of feedback effect of dostribution grid with renewable resources","authors":"Marián Uher, S. Mišák","doi":"10.1109/EEEIC-2.2013.6737887","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737887","url":null,"abstract":"This article describes the quantification of negative feedback effects of renewable energy sources to the distribution system. It's all about power and voltage analysis of artificially created network, which is working under selected operation concepts as well as climatic conditions. Energy storage unit of the energy overproduced by renewable resources is then designed with regard to the incurred feedback effects.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128465906","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}
M. A. J. Delgado, M. Pourakbari‐Kasmaei, M. J. Rider
{"title":"A modified Branch and Bound algorithm to solve the transmission expansion planning problem","authors":"M. A. J. Delgado, M. Pourakbari‐Kasmaei, M. J. Rider","doi":"10.1109/EEEIC-2.2013.6737914","DOIUrl":"https://doi.org/10.1109/EEEIC-2.2013.6737914","url":null,"abstract":"In this paper a novel Branch and Bound (B&B) algorithm to solve the transmission expansion planning which is a non-convex mixed integer nonlinear programming problem (MINLP) is presented. Based on defining the options of the separating variables and makes a search in breadth, we call this algorithm a B&BML algorithm. The proposed algorithm is implemented in AMPL and an open source Ipopt solver is used to solve the nonlinear programming (NLP) problems of all candidates in the B&B tree. Strategies have been developed to address the problem of non-linearity and non-convexity of the search region. The proposed algorithm is applied to the problem of long-term transmission expansion planning modeled as an MINLP problem. The proposed algorithm has carried out on five commonly used test systems such as Garver 6-Bus, IEEE 24-Bus, 46-Bus South Brazilian test systems, Bolivian 57-Bus, and Colombian 93-Bus. Results show that the proposed methodology not only can find the best known solution but it also yields a large reduction between 24% to 77.6% in the number of NLP problems regarding to the size of the systems.","PeriodicalId":445295,"journal":{"name":"2013 13th International Conference on Environment and Electrical Engineering (EEEIC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130415080","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}