S. Kilyeni, O. Pop, T. Slavici, C. Craciun, P. Andea, D. Mnerie
{"title":"Transmission cost allocation using the distribution factors method","authors":"S. Kilyeni, O. Pop, T. Slavici, C. Craciun, P. Andea, D. Mnerie","doi":"10.1109/MELCON.2010.5476356","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476356","url":null,"abstract":"One of the key problems of energy transmission system in an independent environment refers to necessity to establish a cost for system services on nondiscriminatory bases. The prices must to be simple and transparent. A properly established cost provides economical signals for short-term and long-term recovery current expenses and for a fair cost allocation for participants. This paper presents allocation of transmission costs to consumers and to generator using the distribution factors method. A detailed comparison between regime with active losses and the regime without active losses are presented. A case study based on a 12-node system is provided.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134039929","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":"Evaluating the impact of the signalling delay on the control channel","authors":"M. Velempini, M. Dlodlo","doi":"10.1109/MELCON.2010.5476287","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476287","url":null,"abstract":"Multi-channel wireless communication techniques have positioned wireless access networks as strong candidates for the next generation networks. They promise to offer high capacity and better network performance. Unfortunately, multi-channel schemes come with a number of challenges. They operate under some hardware constraints, such as transmit-receive and channel switching delay. A transceiver can listen on one channel and can switch to other channels incurring a channel switching cost which degrades the performance of the network. The paper investigates the impact of the channel switching penalty on performance and it then discusses briefly our proposed model. The performance of the control channel is analyzed and its impact on performance is evaluated. Simulations and network queuing models are employed. The effect of channel switching delay is evaluated in different network sizes. The results show that the performance of the network can be improved by improving the capacity of the control channel and reducing signalling delays.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130900085","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}
Colin Brown, R. Kee, G. Irwin, S. McLoone, P. Hung
{"title":"On generalisation of dual-thermocouple sensor characterisation to RTDs","authors":"Colin Brown, R. Kee, G. Irwin, S. McLoone, P. Hung","doi":"10.1109/MELCON.2010.5475914","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5475914","url":null,"abstract":"Intrusive temperature sensors such as thermocouples and resistance temperature detectors (RTDs) have become industry standards for simple and cost-effective temperature measurement. However, many situations require the use of physically robust and therefore low bandwidth temperature sensors. Much work has been published on dual-thermocouple thermometry as a means of obtaining increased sensor bandwidth from relatively robust thermocouples, which are assumed to have first-order response. This contribution seeks to determine if RTDs, which are known to have approximately first-order response, can also be characterised using the dual-thermocouple approach. Experimental results show that the response of an RTD cannot be represented by a first-order model with sufficient accuracy to allow successful application of this method. Furthermore, simulation studies demonstrated that if a sensor exhibits even marginally second-order response, highly inaccurate temperature reconstructions follow. It is concluded that a higher-order model that more accurately reflects RTD response would be required for successful dual-RTD characterisation.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131250449","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":"Consensus based overlapping decentralized observer for fault detection and isolation","authors":"Nemanja Ilić, M. Stanković, S. Stankovic","doi":"10.1109/MELCON.2010.5476309","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476309","url":null,"abstract":"In this paper a new fault detection and isolation (FDI) observer is proposed in the form of a multi-agent network based on a combination of local optimal stochastic FDI observers and a dynamic consensus strategy. It is shown that the proposed algorithm can generate residuals which provide, under general conditions concerning local models and the network topology, high efficiency, scalability and robustness of the whole estimation scheme. It is demonstrated that the consensus gains can be obtained by minimizing a suitably defined criterion function. A number of examples illustrate the applicability of the proposed methodology in practice.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"80 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134476838","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":"Novel ultra low voltage semi floating-gate passband transconductance amplifier","authors":"Y. Berg","doi":"10.1109/MELCON.2010.5476281","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476281","url":null,"abstract":"An ultra low voltage differential transconductance amplifier based on clocked binary and analog iverters is presented. Supply voltages down to 250mV can be applied. Clocked semi-floating-gate binary inverters used for ultra low voltage digital logic are exploted to obtain analog inverting gates. The ultra low voltage amplifier perform a passband operation where the passband is dependent on the applied current level. The gates used resemble precharge CMOS logic where the cuirrent level is determined by offset voltages and the precharge level is determined by the supply voltage provided by the clock signals applied. Simulated data presented are valid for a 90nm STM CMOS process.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115912149","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}
S. Grillo, S. Massucco, A. Pitto, Federico Silvestro
{"title":"Indices for fast contingency ranking in large electric power systems","authors":"S. Grillo, S. Massucco, A. Pitto, Federico Silvestro","doi":"10.1109/MELCON.2010.5476004","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476004","url":null,"abstract":"The liberalization of the electricity market induces a large variety of scenarios that may lead power systems close to their operation limits. This supports the need for on-line dynamic security assessment (DSA) of the grids, in order to provide operators with a clear insight of the current network state. The on-line application of DSA to a realistic network needs adequate methods to screen the large amount of contingencies to be examined by DSA tools. This paper proposes some practical heuristic indices for Transient Stability contingency pre-filtering and ranking in an on-line DSA session.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114355714","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":"Effect of sand and dust storms on microwave propagation signals in southern Libya","authors":"Esmaeil Mohamed Abuhdima, I. Saleh","doi":"10.1109/MELCON.2010.5475995","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5475995","url":null,"abstract":"The propagation of Electromagnetic waves in millimeter band is severely affected by rain and dust particles in terms of attenuation and de-polarization. There is a growing interest in the effect of dust particles on the propagation of microwaves. This is brought by the increasing number of terrestrial and satellite links in those regions that encounter dust and/or sand storms. Computations of these effects require knowledge of electrical properties of the scattering particles and climate conditions of the studied region . Libya has a large area and it is counted as a country having desertification climatic. Wireless communication networks and microwaves systems has been installed in the southern part of Libya, where there are dust and sand storms that may affect the microwave signal propagation. When microwaves and millimeter waves pass through a medium containing precipitations like sand and dust particles, the signals get attenuated through absorption and scattering of energy out of beam by the sand and dust particles. The main object of this paper is to study the effect of sand and dust storms on wireless communication, such as microwave links, in the southern region of Libya (Sebha, Ashati, Obari, Morzok, Ghat) by determining the attenuation. The result should that there are some consideration that has to be taken into account in the communication power budget.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116827105","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":"Improving contactless technology by increase of transponder load modulation with serial capacitor","authors":"M. Gebhart, Reinhard Szoncso, M. Münzer","doi":"10.1109/MELCON.2010.5475933","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5475933","url":null,"abstract":"Proven chip technology based on International Standards can be used to implement person-related, secure contactless technology also into objects defining smaller antenna sizes than cards. Provided that sufficient power for chip operation is available, low transponder load modulation is the most limiting factor for the communication distance. A simple capacitance matching network allows to balance between power requirements and load modulation amplitude, so that compliance to the requirements of the Standard and to existing terminal infrastructure can be achieved.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116407957","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":"A model based approach for pipeline monitoring and leak locating","authors":"M. Daneti","doi":"10.1109/MELCON.2010.5476013","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476013","url":null,"abstract":"A fluid flowing through a pipeline is a complex phenomenon, depending on many physical factors. Developing efficient methods for system monitoring and leak locating start with a good understanding of the pipeline. The modeling technique becomes a very useful tool, allowing a separate analysis of the different hypostases describing the process. This paper investigates the problem of using a reduced lumped parameters model for the pipeline system. Both static and dynamic regimes are discussed. The final goal is oriented on testing the acoustic methods on the resulted model, given the fact that the pipeline is a multipath, noise-correlated environment. An equivalent laboratory experimental model is used for comparison.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"32 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123223625","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}
T. Kartalov, Aleksandar Petrov, Z. Ivanovski, L. Panovski
{"title":"A real time algorithm for exposure fusion of digital images","authors":"T. Kartalov, Aleksandar Petrov, Z. Ivanovski, L. Panovski","doi":"10.1109/MELCON.2010.5476006","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476006","url":null,"abstract":"A real time algorithm for fusion of differently exposed images is proposed in this paper. The algorithm blends the details from two images of high dynamic range scene, acquired with different exposure values, into one output image which can be displayed on low dynamic range devices. The blending is performed in the spatial domain, using pixel by pixel approach, thus eliminating the need for expensive block processing or transform domain coding. The proposed scheme works both on grey and color images. The algorithm shows high efficiency, which make it applicable on low processing power platforms, such as mobile devices. The obtained results are visually comparable with previously published algorithms that are computationally much more expensive.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126004171","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}