Journal ArticleDOI
A Method to Analyze Voltage Resonance in Power Systems
L. A. Kraft,Gerald T. Heydt +1 more
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TLDR
In this paper, the authors proposed a method to readily evaluate a system configuration so that an evaluation of possible problems due to harmonic voltage resonance can be made, which will produce results with enough accuracy to reduce the need to run multiple modified Newton-Raphson power flow studies.Abstract:
While the appearance of nonlinear devices as loads in electric power systems is not a new phenomenon, this sector of the total demand is significantly increasing and has reached substantial levels in many areas. Experience has shown that the configuration of the power system to which these devices are attached can be such as to cause a resonance condition to develop [1], [2]. This paper proposes a method to readily evaluate a system configuration so that an evaluation of possible problems due to harmonic voltage resonance can be made. This method will produce results with enough accuracy to reduce the need to run multiple modified Newton-Raphson power flow studies [3], [4].read more
Citations
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Journal ArticleDOI
Effects of nonlinear loads on optimal capacitor placement in radial feeders
TL;DR: In this article, a voltage-dependent current injection load model is presented to determine voltage waveform characteristics and additional losses at harmonic frequencies, and the optimal capacitor sizes and locations depend heavily on the load model used at fundamental frequency and on harmonic signals, especially when limits are imposed on voltage waveforms.
Journal ArticleDOI
Harmonic propagation on an electric distribution system: field measurements compared with computer simulation
TL;DR: In this paper, the authors compared the results of field tests on a distribution system with results of HARMFLO simulations to determine if this analysis tool can provide useful results despite the lack of exact information for load modeling and other system parameters.
Journal ArticleDOI
Modified current injection technique
M. Taleb,Thomas H. Ortmeyer +1 more
TL;DR: In this paper, an alternate method of determining the harmonic currents of a six-pulse AC-DC converter is described, which uses the harmonic voltages to predict the firing angles and the resulting injected harmonic currents.
Journal ArticleDOI
Non-divergent numerical method for the harmonic load-flow resolution
TL;DR: In this article, a non-divergent harmonic load-flow calculation method is developed, called h-Newton, which is a modification of the Newton method and its aim is based on differential equations theory.
References
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Journal ArticleDOI
Harmonic Power Flow Studies Part I - Formulation and Solution
Daozhi Xia,Gerald T. Heydt +1 more
TL;DR: In this paper, the conventional Newton-Raphson power flow study has been reformulated to permit the inclusion of nonlinear loads, which give rise to harmonic signals which propagate throughout the power system.
Journal ArticleDOI
Harmonic Power Flow Studies - Part II Implementation and Practical Application
Daozhi Xia,Gerald T. Heydt +1 more
TL;DR: In this paper, the eLectric power flow problem is reformulated to account for harmonic signals which arise from nonLinear loads, and the problem of initialization of bus voltages (including harmonics) is considered and convergence of the algorithm is assessed from the theoretical viewpoint and from the results of actual studies.
Journal ArticleDOI
Harmonic Pollution on Power Systems - A Change in Philosophy
TL;DR: In this paper, the authors discuss the potential for possibly uncontrolled harmonic resonances on industrial power systems, and some practices are recommended, in line with a new IEEE standard, that will minimize the chance of harmful resonant conditions.
Journal ArticleDOI
A Method for Analyzing Harmonic Distribution in A.C. Power Systems
Aly A. Mahmoud,Richard D. Shultz +1 more
TL;DR: In this article, the authors present a method for a analyzing actoristic harmonic current propagation into an AC system, which is applied to two different systems and the responses of individual elements and the system as a whole were observed.
Journal ArticleDOI
Load Forecasting Bibliography Phase II
TL;DR: In this article, the authors present the phase II of the load forecasting bibliography, which is focused primarily on engineering economics, issues and parameters, and the papers selected are typical and thus are representative of studies dealing with engineering economics in load forecasting.
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