Due to increasing energy demand and introduction of competition in the electricity sectors, Unit Commitment (UC) has become a challenging task power system. In operational planning modern system UC plays an important role saves significant amount cost per year. this paper, optimal loading generating units is obtained using particle swarm optimization along with Holomorphic Embedded Load Flow (HELF) technique, under consideration equality inequality constraints different flow. IEEE 30-bus...

This article presents a multiobjective multiscenario framework for the placement of remote-controlled switches (RCSs) to enhance efficiency and reliability unbalanced distribution systems. Two scenarios are formulated, which include healthy postfault persistent conditions. A condition consists cumulative power loss aggregated RCS installation maintenance costs as objectives. Postfault includes total number restored load set optimal solutions derived by employing nondominated sorting genetic...

This paper presents the assessment methodology for voltage stability using Phasor Measurement Unit (PMU) with complete system observability. For full power observability, PMU placement is considered and without conventional flow as well injection measurement such that minimum number of PMU's used. Data obtained by are used help L-Index. As gives real time current phasors L-index dependent on admittance values, thus so can be indicator. The case study has been carried out IEEE-14 bus system.

This study proposes a synchrophasor measurement‐based approach for online available transfer capability (ATC) evaluation. It utilises an expression which correlates the nodal power injections to line flows. A new set of measurement‐dependent injection distribution factors (MDIDFs) has been computed using this expression. The measurements, obtained from optimally placed phasor measurement units, are used carry out linear state estimation (LSE). voltage phasors all system buses, by LSE,...

At present, the growing interconnected power system networks incorporating renewable energy sources, make operation more challenging. Most of time operates near to its security limits. Hence, even a small disturbance may drag into unstable operating condition. For stable and secure system, online assessment stability is very much required. In this paper, an function based approach proposed for transient stability. The Rate Of Change Energy (ROCOE) value utilized identify system....

A Dynamic Available Transfer Capability (DATC) evaluation method using the synchrophasor measurements, considering system's transient stability, is proposed in this paper. The attempts to reduce computational burden of assessing stability and DATC by reducing time-domain simulations. For this, Rate Of Change Energy (ROCOE) trajectories Measurement Dependent Injection Distribution Factors (MDIDFs) are directly computed measurements obtained from optimally placed Phasor Units (PMUs). assessed...