Hybrid power systems have been designed to consist of wind and diesel power plants, as these types of power systems can reduce the harmful effects of conventional diesel-only power plants. Wind power is more commonly used in this set up and preserves the generating margin of doubly fed induction generators (DFIG) under varying wind speeds and changing load conditions, which plays a significant ...

Introduction: Optimal power flow (OPF) is an enhanced form of the economic dispatch (ED) optimisation problem where both active and reactive powers are treated as control variables and adjusted to minimise generation cost while observing associated power flow constraints. The constraints include but are not limited to thresholds on bus voltages, reactive power generation and the thermal ratings...

The installed capacity for wind power is increasing substantially in response to the worldwide interest in low-emissions power sources and a desire to decrease the dependence on petroleum. The European Union directive 2009/28/EC enforces the mandatory target of a 20 % share of energy from renewable sources in overall Community energy consumption by 2020 and a mandatory 10 % minimum target to be...

Under the framework of intelligent management of power grids by leveragingadvanced information, communication and control technologies, a primary objectiveof this study is to develop novel data mining and data processing schemes for severalcritical applications that can enhance the reliability of power systems. Specifically,this study is broadly organized into the following ...

1.0 Overview In 2009, the electricity consumption in Portugal was 49.9 TWh, which represents a reduction of 1.4% in demand, the first decrease since 1981. By the end of December 2009, Portugal had a renewable energy capacity of 9,093 MW, which represents 51% of the total installed capacity (1). The energy generation by the renewable power plants during this year corresponded to 33% of the gener...

Wind energy offers a significant advantage such as no fuel costs and no emissions from generation. However, wind energy sources are variable and non-dispatchable. The utility grid is able to accommodate the variability of wind in smaller proportion along with the daily load. However, at high penetration levels, the variability can severely impact the utility reserve requirements and the cost as...

Due to development of the demand increasing of energy around the world and the decline of traditional energy sources in electricity generation the development orientation of power generation has been toward renewable energies. The use of these unfailing and renewable resources requires study substrates and new infrastructure in the transmission and distribution networks. Due to the power instab...

This paper investigates the integration of Superconducting Magnetic Energy Storage (SMES) System into the standalone Permanent Magnet Synchronous Generator (PMSG) based on Variable Speed Wind turbine (VSWT) in DC Microgrid system. The primary aim of SMES system is to retain power balance by drawing power during high wind generation and to extricate it during low power generation. An effective c...