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Results from two practical and fast methods to estimate systems' Maximum Loading Point (MLP) using Phasor Measurement Units (PMUs) are used in this paper as initial values for a robust and very efficient method that takes advantage of the geometric characteristics of the maximum loading hyperplane and uses the load flow with step size optimization (LFSSO) technique to estimate the system's proximity...
In this paper two different methods to estimate the proximity of the system to the Maximum Loading Point (MLP) are proposed. They are compared with a specific method recently published that uses the Cubic Spline Extrapolation (CSE) for estimating the MLP. All three methods are based on tracking the Thévenin Equivalent (TE) of the system as seen from the load buses using data from Phasor Measurement...
This paper shows that the voltage stability margin of a power network can be determined through the application of a transformation that allows the decomposition of the grid into a set of decoupled source-line-load circuits. By monitoring a small number of these circuits one can analyze the behavior of the actual power system. Therefore it is not necessary to monitor the complete network, since by...
In this work, the performances of robust load flow methods are compared, in special when applied to ill-conditioned systems. In such cases, the iterative process may diverge or oscillate when standard Newton Raphson (SNR) based load flow calculation methods are used. Some known approaches to solve these systems are the Load Flow with Step Size Optimization (LFSSO) and Continuation Power Flow (CPF)...
In this paper a fast, practical maximum loading point (MLP) calculation method is presented. The calculation process is based on the properties of the normal vector to the feasibility boundary computed close to MLP, which is calculated through a load flow method with step size optimization (LFSSO). Moreover, a practical procedure is added to the overall calculation process to include the operator's...
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