Volume 3 nr 1 / 2011 - Academia Oamenilor de Stiinta din Romania

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118 Liviu Muresan, Septimiu Caceu[4] COMMUNICATION FROM THE COMMISSION TO THE COUNCIL AND THEEUROPEAN PARLIAMENT: Critical Infrastructure Protection in the fight against terrorism,Brussels, 20.10.2004, COM(2004) 702 final;[5] GREEN PAPER ON A EUROPEAN PROGRAMME FOR CRITICALINFRASTRUCTURE PROTECTION (presented by the Commission), Brussels, 17.11.2005,COM(2005) 576 final;[6] COUNCIL DIRECTIVE 2008/114/EC of 8 December 2008 on the identification anddesignation of European critical infrastructures and the assessment of the need to improve theirprotection;[7] COUNCIL OF THE EU - PROPOSAL for a COUNCIL DECISION on a CriticalInfrastructure Warning Information Network (CIWIN), 07 January 2009;[8] COUNCIL OF THE EU – PROPOSAL for a DECISION OF THE EUROPEANPARLIAMENT AND OF THE COUNCIL on Community guidelines for the development of thetrans-European transport network;[9] COMMUNICATION FROM THE COMMISSION TO THE EUROPEAN PARLIAMENTon Critical Information Infrastructure Protection, COM(2009) 149 final, Brussels, 30.03.2009;[10] REGULATION (EC) NO 460/2004 OF THE EUROPEAN PARLIAMENT AND OF THECOUNCIL of 10 March 2004 establishing the European Network and Information SecurityAgency;[11] CRITICAL ELECTRICITY INFRASTRUCTURE: Current Experience in Europe, Prof. Dr.Eng. Adrian Gheorghe, Dr. Eng. Dan Vamanu, CNIP06 Special Issue of International Journal ofCritical Infrastructure, 2006;[12] RISK AND VULNERABILITY GAMES. THE ANTI-SATELLITE WEAPONRY(ASAT), Prof. Dr. Eng. Adrian Gheorghe, Dr. Eng. Dan Vamanu, Int. J. Critical Infrastructures,Vol. 3, Nos. 3/4, 2007;[13] CRITICAL INFORMATION INFRASTRUCTURE PROTECTION – organizational andlegal aspects, Myriam Dunn, Isabelle Wigert, Adrian Gheorghe, CNIP06 Special Issue ofInternational Journal of Critical Infrastructure, 2006;[14] LEARNING FROM THE PAST – Electric Power Blackouts and Near Misses in Europe,Markus Schläpfer, Hans Glavitsch, CNIP06 Special Issue of International Journal of CriticalInfrastructure, 2006;[15] NON-BINDING GUIDELINES for application of the Council Directive 2008/114/EC of 8December 2008 on the identification and designation of European critical infrastructures and theassessment of the need to improve their protection, EU Commission, Joint Research Centre, Ispra,Italy, EUR 236665 EN- 2009;[16] CRITICAL INFRASTRUCTURES AT RISK: A EUROPEAN PERSPECTIVE, Prof. Dr.Eng. Adrian Gheorghe, Old Dominion University, VA, US and Dr. Eng. Marcelo Masera, ECJoint Research Centre, Ispra, Italy.Copyright © Editura Academiei Oamenilor de Știință din România, 2011Watermark Protected
Annals of the Academy of Romanian ScientistsSeries on Engineering SciencesISSN 2066-8570 Volume 3, Number 1/2011 119DISTURBANCES IN THE POWER SUPPLY NETWORK OFBUCHAREST SUBWAY SYSTEM (PART 1)Alexandru Ionuț CHIUȚĂ 1 , Liviu Mihai SIMA 2 ,Nicoleta Doriana SECĂREANU 3Rezumat. În prezentul studiu este descrisă problema distorsiunilor apărute în rețeauaprincipală de alimentare a metroului București (sub pământ) cauza și acțiunile, la fel șimăsurile luate pentru limitarea distorsiunilor produse. Toate acestea sunt reflectate înmăsurătorile făcute utilizând osciloscopul Fluke instalat la punctul de dispecer, urmând afi procesate.Abstract. In the present study it is exposed the problem of disturbances in the mainpower supply of Bucharest Subway (underground) system, the cause and their action, aswell as the measures taken to limit the disturbances produced. All this is reflected in themeasurements made using oscilloscope Fluke installed at the dispatch point, following tobe then processed.Keywords: power supply system, electromagnetic compatibility, disturbance, influence, disruptivevoltages1. IntroductionFor the Bucharest Subway, the problems with the disturbances in the main powersupply system exist. These problems were revealed once with the measurementsmade using oscilloscope Fluke installed at the dispatch point.1.1. Subway substations connection to electric power networkSubway substations connection to the electric power network is made by:a) High level short circuit currents due to strong loop network;b) All transformers of 110 kV / MV (medium voltage) of power stations have theneutral connected to earth on 110 kV - so in the City of Bucharest is ahomopolar current circulation with damaging effect on the reinforced concretebuildings;c) On the side of medium voltage in the power network and consumers connectedto the medium voltage (20 kV - for example, Bucharest Subway Line II)capacitive neutral displacement occurs, with the effect on telecommunicationsystems and closed circuit television;1 Ph.D. (ABD), Eng., University ”Politehnica” of Bucharest, (inchiuta@gmail.com).2 Ph.D. (ABD), Eng., Academy of Romanian Scientists, (liviusima@gmail.com).3 Eng., S.C. Metroul S.A., Bucharest, 050027, Romania, (secareanu.nicoleta.doriana@gmail.com).Copyright © Editura Academiei Oamenilor de Știință din România, 2011Watermark Protected
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3FOREWORDBased on a rich scientific
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The remanufacturing of an articulat
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Influence of Vibrations and Dynamic
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Products recovery opportunities at
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Recycling and Remanufacturing -Two
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The Study of Heavy Metal from Envir
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ConclusionsThe Study of Heavy Metal
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Volume 3 nr 1 / 2011 - Academia Oamenilor de Stiinta din Romania

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