Optimal transmission network reconfiguration is an important means to improve the economy and reliability of power grid. However, traditional optimal switching only considers line strategy some approximate flow models are adopted make it tractable, such as linearisation or convex relaxation ones. In this article, first, a comprehensive model considering both bus splitting inside substations est...

There is an increasing amount of wind farms that need to be connected to the AC transmission network. Offshore wind farms will be connected to the ac system via long submarine cables. Integration of offshore wind farms with HVDC transmission based on Voltage Source Converters (VSC), such as HVDC Light, is an advantage due to regulating properties of HVDC Light. The purpose with the Tjæreborg pr...

This paper presents a shape memory alloy (SMA) ac-tuator aimed to be integrated in the phalanx of a dex-terous micro-gripper. Its original design mechanically decouples motion transmission from force transmission. After a brief discussion on the operating principles of the actuator, the kinematics of the mechanism and its general features are speciied. A thermo-mechanical model of the SMA bers ...

For about a hundred years following the war of currents (between Edison and Tesla), settled at end 19th century in favor ac, transmission distribution (T&D) systems have followed well-established architecture still use today. The bulk power is generated using large synchronous machines (driven by steam water turbines) that are connected to step-up transformers operating 50 or 60 Hz. Then, extra...

Deregulation and privatization are posing new challenges to high voltage transmission and distributions systems. System components are loaded up to their thermal limits, and power trading with fast varying load patterns is leading to an increasing congestion. In addition to this, the dramatic global climate developments call for changes in the way electricity is supplied [1, 2]. Innovative solu...

A video data sampling and transmission system is designed for video monitoring based on wireless mesh network. Discussion is made on the use of standards, working frequency, network infrastructure, coverage solutions, link budget, frequency planning, power supply, supporting transmission and AC design. Overall solution on wireless Mesh network digital video system is proposed and it is applied ...

Abstracb This paper presents the estimation of the transmission gain for an AC power line data network in an intelligent home. The estimated gain ensures the transmission reliability and efficiency. A neural-fuzzy network with rule switches is proposed to perform the estimation. An improved genetic algorithm is proposed to tune the parameters and the rules of the proposed neural-fuzzy network. ...

Unlike perfect competitive markets, in oligopoly electricity markets due to strategic producers and transmission constraints GenCos may increase their own profit through strategic biddings. This paper investigates the problem of developing optimal bidding strategies of GenCos considering participants’ market power and transmission constraints. The problem is modeled as a bi-level optimizati...

In recent years, supercapacitors have been developed rapidly as a rechargeable energy storage device. And the performance of is depending on electrode materials, preparation method and materials become primary goal scientific development. This study synthesizes Co3O4@MnO2@PPy cathode material with porous pattern core-shell structure by hydrothermal electrodeposition. The result samples are char...

Supercapacitors are energy storage devices that can cleanly and efficiently meet the growing demand. The presentwork describes synthesis of nanoparticles cobalt ferrite (CoFe2O4) by combustion method their use with activated carbon (AC) to manufacture supercapacitors. In order study influence composition on electrochemical properties, supercapacitors three different compositions were produced: ...