voltage management Articles

  • Protection Relay for Shaft Current and Voltage

    Introduction The paper deals with the specific protection relay for all types of generators. The instrument, called Shaft Current and Voltage Protection Relay (SCVP) was developed at KONCAR – Electric Engineering Institute Inc. This instrument is a part of Institute's product line used for monitoring and diagnosis of rotating electrical machines. The most important parts ...

  • The CBR-PNN approach to real-time voltage security assessment of power systems

    This paper presents the Case-based Reasoning (CBR) technique, a novel approach to voltage security assessment of power system in a real-time environment. The Probabilistic Neural Network (PNN) is used for determining the solution to a new case, using the old cases from the case base of the CBR system. A feature selection technique based on the information gained has been employed to identify the ...


    By Inderscience Publishers

  • Voltage Optimisation can improve schools energy efficiency by up to 25%

    Voltage Optimisation is a key component in any energy efficiency programme and could deliver up to 25% savings on electricity bills. In April the registration period for the Carbon Reduction Commitment (CRC) Energy Efficiency Scheme will start again. Local authorities and companies with a portfolio of private schools will face sizeable fines unless they account for their energy use ...


    By Vital Efficienci Ltd.

  • Realizing energy savings in water processing applications using medium voltage adjustable frequency drives

    Why uptime and energy efficiency matter in water processing Making sure that systems and processes are up and running while improving energy efficiency (and cost) is crucial in water processing applications. During the recent recession, federal and municipal budgets tightened, limiting access to capital across the United States. At the same time, increased awareness of the ...


    By Eaton Corporation

  • Energy Management Contract

    1. Introduction Energy management contract (EMC) is a new market-oriented energy saving mechanism. It is not to market a product or a technology, but a financial management method to reduce the energy costs. EMC companies provide the customers with a complete set of energy saving services, including energy auditing, project design & financing, engineering construction, ...

  • Energy management system for a PV assisted conventional vehicle

    In this paper, a novel algorithm is proposed, for effective energy management of a conventional internal combustion engine vehicle, consisting of a photovoltaic (PV) source and battery also to power its electrical load. It offers a more practical and eco friendly solution of fossil fuel consumption reduction as compared to presently available alternatives such as electric/hybrid electric ...


    By Inderscience Publishers

  • Gas Monitoring for Ventilation Control and Energy Management

    The growing demand for underground and enclosed parking and maintenance garages (resulting from limitations on land availability) has increased the awareness and need for proper ventilation and control systems. In addition, increased health and safety programs have only added to the concerns of toxic and combustible gases in confined or enclosed spaces. Historically, ventilation and make-up air ...


    By Arjay Engineering Ltd.

  • New topology for management of bi-directional power flow between vehicle and grid with reduced ripple current at unity power factor

    In this paper, a new topology of single-phase pulse width modulated (PWM) AC-DC converter is proposed for bidirectional power flow between plug-in hybrid electric vehicle (PHEV) and the grid. This converter consists of a PWM voltage source converter (VSC) and a ripple reduction circuit. The ripple reduction circuit consists of a switching leg and an inductor. The inductor is connected between ...


    By Inderscience Publishers

  • Control and small-signal analysis of battery and supercapacitor hybrid energy storage systems

    This paper is devoted to control strategies for an active battery and supercapacitor hybrid energy storage system using the master-slave control scheme, where the charging and discharging currents of the supercapacitor are dependent on that of battery and the current sharing ratio depends upon the load conditions. A small-signal model is proposed, which considers the variations in the currents of ...


    By Inderscience Publishers

  • Why the fossil-fuelled reactor fleet in France will not be affected by an evolution of the wind power capacity

    Today's power electronics can confer high-performance adjustment capabilities on any technological object, including the frequency-power and voltage tuning of modern, synchronous-type wind turbines. However, this will not enable such devices to steadily produce electric power from an uncontrolled mechanical energy. Thus they cannot be considered independent generation units: the need to ...


    By Inderscience Publishers

  • Environment Agency offices - Phoenix House, Cambria House And Lutra House

    About the Environment Agency The Environment Agency (EA) is a non-departmental Public Body which reports to the Secretary of State for Environment, Food and Rural Affairs. It is also an Assembly Sponsored Public Body of the National Assembly for Wales. The Environment Agency describes its purpose as "to protect or enhance the environment, taken as a whole" and to promote "the objective of ...


    By powerPerfector

  • Coping with power scarcity in an emerging megacity: a consumers' perspective from Hyderabad

    Facing rapid urbanisation in developing countries, public utilities' electricity management is challenged by an ever-growing demand and collapsing infrastructures. Economic growth and consumers' related behaviours add to the technical and governance problems. We analyse the ways in which consumers currently deal with power shortages in Hyderabad, India, finding consumers trapped in a typical ...


    By Inderscience Publishers

  • Electrokinetic delivery of permanganate into low-permeability soils

    A bench-scale study was conducted to investigate the feasibility of using electrokinetics as a method of delivering an oxidant into kaolin, a low-permeability soil. Potassium permanganate (KMnO4) was chosen as the oxidant, and in separate tests, KMnO4 was introduced at the anode, the cathode and both electrodes to investigate (1) the extent of oxidant transport via ...


    By Inderscience Publishers

  • Effect of various micro-porous layer preparation methods on the performance of a proton exchange membrane fuel cell

    Proton exchange membrane fuel cells (PEMFCs) have been widely studied and discussed in the field of energy owing to their high energy efficiency and low waste emissions. A PEMFC uses hydrogen gas as a fuel, and works by causing hydrogen ions to link up with oxygen, producing liquid water as its sole by-product. The design of a PEMFC's micro-porous layer (MPL) can not only enhance cell ...


    By Inderscience Publishers

  • Comparative performance of BESS and SMES in distribution network to improve power quality

    The FACTS devices, like STATCOM, are becoming a part of the modern power system to improve the power system operation and power quality problems. Integrating the battery energy storage system (BESS)/superconducting magnetic energy storage (SMES) across the dc bus of the STATCOM can provide effective modulation of the real and reactive power. The dynamics of each of these differ because of their ...


    By Inderscience Publishers

  • Electricity Alliance case study

    Enabling incident management and audit The Electricity Alliance carries out construction works to connect new electricity generation, such as wind farms and power stations, to the National Grid network. It also enhances and replaces existing National Grid assets, including substations, overhead lines and underground cables, to ensure the continued safe and reliable operation of the ...


    By Rivo Software Ltd.

  • The Association of Greater Manchester Authorities (AGMA) case study

    The implementation of cost saving green technology has reduced energy spend across Greater Manchester’s public sector bodies by over £500,000 every year. Using Official Journal of the European Union (OJEU) approved procurement and by implementing cross organisational communication, AGMA has been able to adopt Voltage Power Optimisaton across 90 sites. By becoming early adopters of VPO ...


    By powerPerfector

  • Black Box for Electrical Machines

    Abstract This article describes a specific monitoring system for electrical machines, called black box for electrical machines (Electrical Machines Black Box, EMBB).  Detailed analysis about problems of harmful working conditions that can occur on all electrical machines has been made. Based on these data and on measurement and control ...

  • ClorTec® Case Study - New Brighton Merseyside

    United Utilities PLC was created from the merger of North West Water and Norweb in November 1995. Its principal activities are managing and operating the regulated electricity distribution, water and wastewater networks in North West England, a region with a population of around 7 million.  After evaluating treatment options, United Utilities decided to install an on-site sodium hypochlorite ...


    By De Nora Water Technologies

  • My Energy Efficiency - SMZ 133 - Universal Panel Meter

    SMZ 133 - advanced power monitor and datalogger with 512 Mb internal memory, rich selection of programmable inputs and outputs and with advanced communication options. This panel meter is intended for wide area distribution network monitoring as well as for industrial and building energy efficicency applications. It includes precise electric energy meter - active energy class 0.5, reactive in ...


    By KMB Systems, s.r.o.

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