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2008 International School on Nonsinusoidal Currents and Compensation

10-13 June 2008

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  • [Front cover]

    Publication Year: 2008, Page(s): c1
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  • IX Conference Seminar

    Publication Year: 2008, Page(s): 1
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  • Subject matter

    Publication Year: 2008, Page(s): 1
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  • Committees

    Publication Year: 2008, Page(s): 1
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  • Venue

    Publication Year: 2008, Page(s): 1
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  • Program

    Publication Year: 2008, Page(s): 1
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  • Program ISNCC 2008c

    Publication Year: 2008, Page(s): 1
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  • PRE Program ISNCC

    Publication Year: 2008, Page(s):1 - 20
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  • Tutorial titles

    Publication Year: 2008, Page(s): 1
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  • Instantaneous p-q power Theory for compensating nonsinusoidal systems

    Publication Year: 2008, Page(s):1 - 10
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2209 KB) | HTML iconHTML

    This paper presents a tutorial about compensation of nonsinusoidal systems based on the instantaneous active and reactive power theory or the p-q theory. The history related to this theory is presented and then the definitions of real, imaginary and zero-sequence powers are introduced. The physical meanings of each of these powers are explained and some basic compensation examples are shown consid... View full abstract»

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  • Fryze - Buchholz - Depenbrock: A time-domain power theory

    Publication Year: 2008, Page(s):1 - 12
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (705 KB) | HTML iconHTML

    Several power theories trying to explain the difference between the physically defined active power and the apparent power are known - and under discussion. This paper gives an overview of a universal time-domain power theory mainly developed by Fryze, Buchholz and Depenbrock. It is verified by theoretical considerations and explained by examples. The theory allows the assessment of loads concerni... View full abstract»

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  • Cooperative design and control of distributed harmonic and reactive compensators

    Publication Year: 2008, Page(s):1 - 6
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1074 KB) | HTML iconHTML

    A theoretical background for the design and coordinated control of multiple compensation equipment acting in the same network is presented. It makes use of instantaneous power terms which are conservative in every network and naturally extend the usual power definitions to the case of distorted voltages and currents. Based on the theoretical approach, a system-level and equipment-level control alg... View full abstract»

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  • Currents’ Physical Components (CPC) concept: A fundamental of power theory

    Publication Year: 2008, Page(s):1 - 11
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3809 KB) | HTML iconHTML

    The paper introduces readers to currently the most advanced power theory of electrical systems with non-sinusoidal voltages and currents, along with fundamentals of their compensation, based on the concept of currentspsila physical components (CPC). It includes single-phase systems and unbalanced three-phase systems with linear, time-invariant (LTI) and harmonic generating loads (HGLs). View full abstract»

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  • Switching compensator control strategy based on CPC power theory

    Publication Year: 2008, Page(s):1 - 11
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8004 KB) | HTML iconHTML

    A reference generation technique for shunt switching compensators based on currentspsila physical components (CPC) power theory is presented that utilizes a computationally efficient moving-window DFT along with the CPC orthogonal decomposition of the current instead of the filters typically used to extract the desired components of the current. Each orthogonal component of the current can be adju... View full abstract»

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  • Papers

    Publication Year: 2008, Page(s):1 - 3
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  • A few remarks on the analysis of energy transfer through any periodic current and voltage waveforms

    Publication Year: 2008, Page(s):1 - 5
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB) | HTML iconHTML

    Numerous publications point out that each of the so far presented proposals how to describe power states has some defects, they all lack the physical interpretation or the universal character. Yet, the application of a given power theory to analyze the electric circuit was not preceded by the proof of the rightness of such a procedure in relation to the character of this circuit. The authors of th... View full abstract»

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  • The correlation functions of power as a new proposition to describe power states in circuits with periodical voltage and current waveforms

    Publication Year: 2008, Page(s):1 - 4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB) | HTML iconHTML

    The analysis of energy transfer in the circuits is based on the instantaneous power p(t), which is the product of the two waveforms u(t),i(t) . An interesting thing is the search for mutual relations between these two waveforms. In the paper the authors made an attempt to describe power states in electrical circuits with periodic waveforms with the help of the correlation of the two functions. In ... View full abstract»

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  • Critical analysis of different current decomposition and compensation schemes

    Publication Year: 2008, Page(s):1 - 6
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB) | HTML iconHTML

    This paper discusses the fundamentals of different methods for current decomposition and non-active power compensation in polyphase power systems. The basic concepts and the results of the instantaneous active and reactive power theory on the one side, and of the active/reactive average power theory on the other side, are critically compared. View full abstract»

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  • The effect of earth fault current harmonics on tripping of residual current devices

    Publication Year: 2008, Page(s):1 - 6
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (709 KB) | HTML iconHTML

    The most popular means of protection against indirect contact in low voltage systems is automatic disconnection of supply, since it is a simple and economically attractive way to achieve safety in an electrical installation. As a protective device, residual current devices (RCDs) are commonly used. In certain conditions using the RCDs is obligatory. The widespread application of static converters,... View full abstract»

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  • The geometric algebra as a power theory analysis tool

    Publication Year: 2008, Page(s):1 - 7
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1025 KB) | HTML iconHTML

    In this paper, a multivectorial decomposition of power equation in single-phase circuits for periodic n-sinusoidal /linear and nonlinear conditions is presented. It is based on a frequency-domain Clifford vector space approach. By using a new generalized complex geometric algebra (GCGA), we define the voltage and current complex-vector and apparent power multivector concepts. First, the apparent p... View full abstract»

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  • Discussion on existing methodologies for the Responsibilities Assignment Problem

    Publication Year: 2008, Page(s):1 - 7
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1770 KB) | HTML iconHTML

    This paper introduces the responsibilities assignment problem (RAP) and discusses existing methodologies by theory and examples. The RAP can be understood as the evaluation and determination of the power quality disturbances and of the power quality conditions detriment concerning source and amount. Selected details of this problem are presented in this paper, in order to pro... View full abstract»

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  • Power delivery system nonsinusoidal regime analysis

    Publication Year: 2008, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (727 KB) | HTML iconHTML

    The paper proposes to analyze a real case study from Galati town power delivery system. The study will consider a technical solution to save power losses using an adequate harmonics filter together with a reactive power correction system. The solution conducts calculations with the objective to minimize the total power losses. On this purpose we use an important data base obtained by local power d... View full abstract»

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  • Harmonic digital simulation technique on an industrial environment

    Publication Year: 2008, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1563 KB) | HTML iconHTML

    The paper proposes to study a real industrial power system and to presents the digital harmonic analysis using EDSA technical software. The objectives of the study are to evaluate the potentially negative impact of non-linear loads on the system, and to study possible techniques that will minimize this impact. On this goal, will be presented eight harmonic interesting analysis cases and will be co... View full abstract»

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  • Influence of the nonlinearity of measurement transformers on effectiveness of module error correction

    Publication Year: 2008, Page(s):1 - 5
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1132 KB) | HTML iconHTML

    The article presents the program spectral line method of module error correction in linear input circuits. The method requires the knowledge of the frequency characteristics of the module errors and the phase errors of the input circuit to be corrected. The method was used for frequency error correction of measurement transformers applied in electronic power transducers. Such input circuits are no... View full abstract»

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  • Numerical detection of the current instability phenomena due to the balance of the electric machines

    Publication Year: 2008, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1353 KB) | HTML iconHTML

    The instabilities arising in the power delivery network may cause serious problems for the whole system security. The most difficult detectable event is the energy balance phenomena. This has specific evolution characteristics, which are not so easy to be observed. The paper presents a real type situation, studied on a physically realized model, on a reduced scale. It is based on a permanent magne... View full abstract»

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