Journal ArticleDOI
CPFLOW: a practical tool for tracing power system steady-state stationary behavior due to load and generation variations
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TLDR
The main advantages of CPFLOW over repetitive power flow calculations are its computational speed and reliability as well as its wide applicability.Abstract:
In this paper, a computer package called CPFLOW, which is a comprehensive tool for tracing power system steady-state stationary behavior due to parameter variations, is presented. The variations include general bus real and/or reactive loads, area real and/or reactive loads, or system-wide real and/or reactive loads, and real generation at P-V buses (e.g. determined by economic dispatch or participation factor). The main advantages of CPFLOW over repetitive power flow calculations are its computational speed and reliability as well as its wide applicability. A detailed description of the implementation regarding the predictor, corrector, step-size control and parameterizations employed in CPFLOW is presented. CPFLOW has comprehensive modeling capability and can handle power systems up to 12000 buses. For an illustrative purpose, CPFLOW is applied to a 3500-bus power system with a comprehensive set of operational limits and controls. >read more
Citations
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A particle swarm optimization for reactive power and voltage control considering voltage security assessment
TL;DR: In this article, a particle swarm optimization (PSO) for reactive power and voltage control (volt/VAr control: VVC) considering voltage security assessment (VSA) is presented.
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A Method for Placement of DG Units in Distribution Networks
TL;DR: In this paper, a method for placement of distributed generation (DG) units in distribution networks has been presented based on the analysis of power flow continuation and determination of most sensitive buses to voltage collapse.
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Sensitivity of the loading margin to voltage collapse with respect to arbitrary parameters
TL;DR: In this article, linear and quadratic estimates to the variation of the loading margin with respect to any power system parameter or control are derived, and tests with a 118-bus system indicate that the estimates accurately predict the quantitative effect of altering the system loading, reactive power support, wheeling, load model parameters, line susceptance and generator dispatch.
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Available transfer capability calculations
TL;DR: In this article, a program for available (transmission) transfer capability (ATC) calculations based on full AC power flow solution to incorporate the effects of reactive power flows, voltage limits and voltage collapse as well as the traditional line flow (thermal loading) effects is presented.
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Voltage instability: phenomena, countermeasures, and analysis methods
TL;DR: In this paper, the authors describe voltage instability phenomena, enumerate preventive and curative countermeasures, and present in a unified and coherent way various computer analysis methods used or proposed.
References
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Journal ArticleDOI
The continuation power flow: a tool for steady state voltage stability analysis
TL;DR: In this paper, the authors present a method of finding a continuum of power flow solutions starting at some base load and leading to the steady-state voltage stability limit (critical point) of the system.
Journal ArticleDOI
Point of collapse and continuation methods for large AC/DC systems
TL;DR: In this article, the implementation of both point of collapse (PoC) and continuation methods for the computation of voltage collapse points (saddle-node bifurcations) in large AC/DC power systems is described.
Journal ArticleDOI
Calculation of critical loading condition with nose curve using homotopy continuation method
TL;DR: In this paper, a new method is presented for calculating the nose curves and critical loading conditions of power systems, which is based on the conventional Newton-Raphson load flow calculation, but overcomes the numerical difficulties associated with the singularity of the Jacobian matrix.
Journal ArticleDOI
Voltage collapse precipitated by the immediate change in stability when generator reactive power limits are encountered
Ian Dobson,L. Lu +1 more
TL;DR: In this paper, the authors studied the mechanism for voltage collapse and showed that load power margin calculations can be misleading if the immediate instability phenomenon is neglected, leading to a dynamic voltage collapse leading to blackout.
Journal ArticleDOI
An investigation of the solution to the optimal power flow problem incorporating continuation methods
M. Huneault,Francisco D. Galiana +1 more
TL;DR: In this article, a solution methodology based on the continuation method, a parametric technique, is proposed for the optimal power flow (OPF) problem in a nonlinear nonlinear programming problem.