power transmission line Articles

  • 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 ...


  • 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

  • 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

  • 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

  • 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

  • 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

  • Development and application of global techno-economic parameters for selection and operation of transmission line conductors

    The financial implications of losses in transmission and distribution line conductors are analysed, with the introduction of two new universal parameters, viz. Financial Burden Constant (FBC) and Critical Operating Hours (COH). Each size of a transmission line conductor has a distinctive value of FBC and COH. Techno-economic issues related to transmission systems can very conveniently be ...


    By Inderscience Publishers

  • 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

  • Brazil transmission: what impact on O&M?

    Brazilian wind developers may increasingly have to factor transmission links into their operations and maintenance (O&M) plans if grid connection delays persist in the market. Bloomberg earlier this year reported that firms such as CPFL Energia, Brazil’s largest private sector utility, with more than 1.3GW of wind farms in operation or under construction, were stepping forward to bid ...

  • Regional electricity price differences due to intermittent wind power in Germany: impact of extended transmission and storage capacities

    A fast growth of installed wind power capacity has been experienced in several European countries. In Germany, notably high wind power capacities are planned in the North. If the existing transmission capacities between individual regions become insufficient, the electricity prices will differ considerably and the system operation can become unstable. It is supposed that the extension of ...


    By Inderscience Publishers

  • 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

  • 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

  • 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

  • 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

  • High wire act: electricity transmission infrastructure and its impact on the renewable energy market

    Renewable energy (RE)—electricity from wind, solar, and other naturally renewing energy sources— has drawn increasing attention in the quest to reduce greenhouse gases on a scale commensurate with the dictates of climate science. Renewables have the potential to substitute for a significant proportion of the conventional fossil fuels prevalent in today’s electricity generation. ...

  • H∞ controller for stability enhancement in VSC HVDC system with parallel AC lines

    In this paper, a state-space model for a voltage source converter based high voltage direct current (VSC HVDC) transmission link in parallel with an AC transmission line is developed using dq-coordinate system. A robust H∞ control design for the converter and inverter of the VSC HVDC system is proposed to maintain the DC voltage and control the active and reactive power at the converter stations. ...


    By Inderscience Publishers

  • The Emerging Power of Microgrids

    Over many decades, the centralized power grid — a one-way flow of electricity, generated by large, remote power plants and distributed over miles of transmission lines to homes and businesses — succeeded in delivering electricity across continents to billions. But in recent years the system’s shortcomings have become increasingly ...


    By GLOBE Foundation

  • Avoiding the Power Grid with Renewable Energy

    For approximately one hundred years, thriving countries have been dependent on only one form of distributing power; electricity sent over large transmission grids from plants generating electricity, to customers in businesses, homes, and factories.  Generators extract energy from rooftop solar panels, garbage, and sewage, which replace or assist coal, nuclear, and natural gas plants. A ...


    By Greenshine New Energy LLC

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