power transmission Articles

  • A practical transmission loss allocation methodology for deregulated power systems

    In any power network, the cost of electrical losses constitutes a large component of network operating costs. As a result of introduction of competition under deregulation, it has become much more important to be able to determine a strategy for fair allocation of losses among the stakeholders. This paper suggests a quadratic loss formula with nodal power injections as independent variables. The ...


    By Inderscience Publishers

  • Interregional power transmission: a component in planning for renewable energy technologies

    We discuss the role played by interregional power transmission on the basis of recent scenario work. In a project dealing with long-term planning for energy efficiency and renewable energy in Europe [described thoroughly in 1-4], we modelled a scenario for the present 15 EU countries' energy system in 2050. The basis for the scenario is the concept of "fair pricing" for energy services, meaning ...


    By Inderscience Publishers

  • A perspective overview of topological approaches for vulnerability analysis of power transmission grids

    Vulnerability analysis is a key issue in power systems since power transmission grids play a crucial role as a critical infrastructure. The power grid structure (number of nodes and lines, their connections, and their physical properties and operational constraints) is one of the main factors to assure power system security. Complex network theory as a promising topological approach for the ...


    By Inderscience Publishers

  • The use of the Pareto distribution for fracture transmissivity assessment

    For many applications data on the transmissivity distribution of individual fractures are necessary, i.e., discrete fracture network (DFN) modelling of groundwater flow and transport of solutes in fractured rock and design and performance of rock grouting. Using borehole data from the Äspö Hard Rock Laboratory, Sweden, it is shown that evaluated fracture transmissivities from three boreholes at ...


    By Springer

  • Jefferson-Martin 230 Kilovolt Transmission Line Project

    One of the largest underground transmission projects in the U.S. had a goal of protecting environmental resources while meeting the San Francisco Bay Area's growing demand for reliable electrical power. One of the largest underground transmission projects in the United States has a goal embraced by all working on the Pacific Gas & Electric Company's (PG&E) Jefferson-Martin 230 Kilovolt ...


    By Black & Veatch Corporation

  • Flexible AC Transmission Systems (FACTS) controllers: an overview

    Flexible AC Transmission Systems (FACTS) controllers have been used in power systems since the 1970s with the objective of improving system dynamic performance. Due to the environmental, right-of-way, and cost problems in both bundled and unbundled power systems, many transmission lines have been forced to operate at almost their full capacities worldwide. FACTS controllers enhance the static ...


    By Inderscience Publishers

  • Micro tuning of reactance by split TCSC on transmission line

    The TCSC is a form of FACTS compensator that improves power transfer capability by regulating transmission line reactance. Proper tuning of TCSC results in the variation of inductive/capacitive reactance along with resonance region. A difficulty is observed on tuning the TCSC device; large change in TCSC reactance at critical region (nearby resonance region) prohibits possible fine control of ...


    By Inderscience Publishers

  • USA Transmission Line Construction Market Overview

    The US electricity transmission grid comprises more than 321,869 kilometers (km) (200,000 miles (mi)) of High-Voltage (HV) transmission lines. The country is currently undergoing a major revamp of its aging Transmission and Distribution (T&D) infrastructure due to rising electricity demand and the growth of renewable energy assets, assisted by increased government support. During the ...


  • US Transmission Line Construction Market Overview

    The US electricity transmission grid comprises more than 321,869 kilometers (km) (200,000 miles (mi)) of High-Voltage (HV) transmission lines. The country is currently undergoing a major revamp of its aging Transmission and Distribution (T&D) infrastructure due to rising electricity demand and the growth of renewable energy assets, assisted by increased government support. During the ...


  • Power losses from wind generated electricity in high voltage AC transmission: an analysis through simulation

    In this paper, we have investigated different types of losses from wind generated electricity in high voltage AC (HVAC) transmission. Wind power generation is expensive in nature and it is thus necessary to know how much power is lost in the transmission. We have simulated an HVAC transmission system with a wind power generator in Simulink. We varied different components of the system namely wind ...


    By Inderscience Publishers

  • Integrated flexible parylene–based inductor with magnetic core for wireless power transmission system

    In this paper, flexible parylene–based MEMS inductors were designed, fabricated and analysed. A magnetic core was added in the centre of spiral coil in order to further enhance the performance of the inductor. FeNi alloy was chosen as the magnetic material due to its relatively high permeability. Parylene was used as substrate and insulation material due to its good bio–compatibility and ...


    By Inderscience Publishers

  • Policy transmission: the emerging policy dynamic of water supply infrastructure development in India

    The focus of this paper will be to investigate the nature of policy reform in the water supply infrastructure sector in India. In the formal division of powers, much of the authority to implement policies in this sector rests with state governments and the role of the national government is largely restricted to recommending broad policy directions. Since the late 1990s, with the diffusion of the ...


    By IWA Publishing

  • A new method for accommodating loop flows during transmission loss allocation

    This paper presents a new method for accommodating loop flow in the process of transmission loss allocation including a generalised model for the transmission line. The developed line model is similar to the generalised circuit model based on the famous ABCD parameters. The proposed model enables unbundling the active power loss allocated to a node into two components; the first is the loss due ...


    By Inderscience Publishers

  • Discussing the Impact of the Various Catastrophic Tornadoes on the Transmission & Distribution Systems

    Utility preparations for outage response and restoration are an ongoing, consistent problem. Through the year, storms cause disruption to the delivery of power and ultimately cost the utility industry money through lost revenue and system repair. Much of this preparation is focused on weather damage that may occur from hurricanes, thunderstorms, ice storms and various other natural events. Pam ...


    By Marcus Evans

  • A new fault detection, classification and location scheme for transmission line

    Using the powerful analysing and decomposing features of wavelet transform, a new fault detection scheme is presented. Further, the same technique has been extended for fault classification and accurate fault location from the relaying point to the fault using a radial basis function neural network (RBFNN) which provides a more efficient approach for training and computation. The relaying scheme ...


    By Inderscience Publishers

  • Case study - Woodroffe Avenue Transmission Main - Ottawa, Ontario

    Service: SoundPrint AFO PureRobotics Client: City of Ottawa Project Date: 2011 Location: Ottawa, Ontario, Canada Type of Pipeline: Water Transmission Main Diameter: 48-inch (1200mm) Pipe Material: PCCP The Woodroffe Avenue Transmission Main in Ottawa, Ontario experienced a major failure in January 2011 which opened a large hole across three traffic lanes causing major ...


    By Pure Technologies

  • Software reliability estimation of computer relaying for transmission line protection using user-oriented software reliability model

    Advancement in signal processing techniques and VLSI technology has rapidly substituted conventional electromechanical relays with novel alternatives like digital relays, also termed as computer relays in power system parlance. A computer relay is considered as a digital signal processor which continuously processes the values of line currents and voltages. Hence, the heart of the computer relay ...


    By Inderscience Publishers

  • Exergetic assessment of transmission–concentrated solar energy systems via optical fibres for building applications

    Optical fibres solar energy transmission and concentration provide a flexible way of handling concentrated solar energy. Solar lighting with Fibre Optic Bundles (FOBs) can be considered a promising option for energy–efficient green buildings. This study deals with the exergetic analysis and performance assessment of a system based on the idea of Transmission–Concentrated Solar Energy via Optical ...


    By Inderscience Publishers

  • The Power of the Moon

    The influence the moon has on life on earth is disputed. However, during an assignment in Southeast Asia, vibration experts from Sulzer were able to clearly confirm that the moon can even affect pumps. With its broad expertise, the Sulzer team was able to solve an unusual case of vibration. Southeast Asia is a key exporter of LNG (liquefied natural gas) to global markets, and it is ...


    By Sulzer Management Ltd

  • Anomaly pre-localization in distribution–transmission mains by pump trip: preliminary field tests in the Milan pipe system

    In this paper, the reliability of transients due to pump trip as a powerful tool for the pre-localization of anomalies in real pipe systems is tested. The examined pipe system is part of the one supplying the city of Milan, Italy and is managed by Metropolitana Milanese SpA (MM). The characteristics of such a system can be considered as intermediate between those of classical transmission mains ...


    By IWA Publishing

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