In this paper, a method for sizing the reactive power compensation in non-interconnected island system is presented and applied to determine necessary inductive autonomous of Rhodes Island, Greece. The often confronted with an excess power, as result—inter alia—of underground high-voltage (HV) cable lines distributed generation penetration. Reactive typically local issue systems, usually aiming...

The Korean government has declared the goal of net-zero-carbon emissions with a focus on renewable energy expansion. However, high proportion baseload generators and an increasing variable (VRE) may cause problems in power system operation owing to low cycling capability variability VRE. To maintain reliability, is planning construct pumped-storage hydropower (PSH) plants, which can provide fle...

As the steady-state frequency of an actual power system decreases from its nominal value, composite load generally responds positively to lower consumption, and vice versa. It is believed that this damping (LFD) effect will be artificially enhanced, i.e., sensitivities loads with respect operational increase, in future systems. Thus, for wind-integrated systems, paper proposes a frequency-depen...

We present a perfect formulation for a single generator in the unit commitment problem, inspired by the dynamic programming approach taken by Frangioni and Gentile. This generator can have characteristics such as ramping constraints, time-dependent start-up costs, and start-up/shut-down ramping. To develop this perfect formulation we extend the result of Balas on unions of polyhedra to present ...

In this paper we present a unit commitment model for studying the impact of large-scale wind integration in power systems with transmission constraints and system component failures. The model is formulated as a two-stage stochastic program with uncertain wind production in various locations of the network as well as generator and transmission line failures. We present a scenario selection algo...

This paper presents a solution to Optimal Unit commitment (UC) of thermal units based on a evolutionary algorithm known as Genetic algorithm (GA). In this proposed method of GA for the UC problem, the scheduling variables are coded as integers, so that the minimum up/down time constraints can be handled directly. To verify the performance of the proposed algorithm, it is applied to systems with...