The objective of this paper is to predict the voltage stability limit a multi-bus power transmission system using Artificial Neural Networks (ANN). When overloaded or change in systems condition, there an uncontrollable drop collapse occurs. weakest, weaker, and weakest bus IEEE - 30 can be identified by Newton Raphson method load flow analysis. simulated MATLAB programming. In Jacobian matrix ...

1  Abstract—The short-term voltage stability (SVS) problem in large-scale receiving-end power systems is serious due to the increasing load demand, the increasing use of electronically controlled loads and so on. Some serious blackouts are considered to be related to short-term voltage instability. In China, the East China Grid (ECG) is especially vulnerable to short-term voltage instability d...

The paper presents a novel Modulated Power Filter and Compensator (MPFC) scheme for voltage stability, energy conservation, loss reduction, power factor correction, and power quality enhancement for electric distribution systems based on Multi-Objective Particle Swarm Optimisation (MOPSO). The MPFC scheme was developed by the first author to vary the shunt power filter equivalent admittance, mo...

This paper introduces an augmented formulation to directly compute instability points in power systems. The formulation is an extension of the direct \Point of Collapse" formulation for the computation of static system instabilities. The paper demonstrates the differences between purely static limits (based on power ow Jacobians) and steady-state dynamic instability points (based on eigenvalue ...

Voltage instability is gaining importance because of unusual growth in power system. Reactive power limit of power system is one of the reasons for voltage instability. Preventing Voltage Collapsesare one of the challenging tasks present worldwide.This paper presents static methods like Modal Analysis, Two Bus Thevenin Equivalent and Continuation Power Flow methods to predict the voltage collap...

This report describes power system component and system modelling for voltage stability studies, as well as a protection system against voltage collapse installed in Sweden. The importance of detailed and accurate models for dynamic loads, tap changer control, generator current limiters and distribution systems is demonstrated in the paper. The necessity to go into details and to do experiments...

This paper discusses a shunt active ûlter intended for installation on a power distribution system. The active ûlter has an additional capability to regulate the distribution line voltage by means of adjusting reactive power. Theoretical analysis investigates the dynamic performance of combined harmonic damping and voltage regulation. As a result, harmonic damping makes it possible to improve t...

This paper presents a new voltage support (VS) strategy for photovoltaic (PV) systems based on sensitivity analysis to enhance the dynamic stability (DVS) of islanded microgrids (MGs). Every network contains different characteristics. In particular, MGs have unique features compared utility grids such as high resistance reactance ratio (R/X). Consequently, injection both active and reactive cur...

To address the static voltage stability issue and suppress the voltage fluctuation caused by the increasing integration of wind farms and solar photovoltaic (PV) power plants, a two-tier reactive power and voltage control strategy based on ARMA power forecasting models for wind and solar plants is proposed in this paper. Firstly, ARMA models are established to forecast the output of wind farms ...