Power Quality Monitoring Articles

  • Hybrid machine intelligence–based improved classifiers for multiple power signal disturbances

    This work presents a new technique for the identification of multiple power quality disturbances in industrial power systems. This new technique is developed based on change detection filter (CDF) and machine intelligence techniques like the local linear radial basis function neural network (LLRBFNN) and decision tree (DT). The proposed change detection filter has been designed in one cycle back ...


    By Inderscience Publishers

  • An improved power quality boost–flyback SSIPP fed BLDC motor drive

    This paper presents a single–stage isolated power factor corrected power supply (SSIPP) fed permanent magnet brushless DC (BLDC) motor drive. An advantage of fast voltage regulation with single voltage control loop of SSIPP is utilised to develop a power factor correction (PFC) based BLDC motor drive. The speed of BLDC motor is controlled by varying the DC link voltage of the voltage source ...


    By Inderscience Publishers

  • 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.

  • Wavelet feature–based modular neural network for detection and classification of power quality disturbances

    Disturbances such as voltage sag, swell, interruption and harmonics are very typical in a power system. Power quality monitoring should be capable of identifying these disturbances to initiate mitigation action and protect sensitive loads. This paper presents wavelet–neural network–based detection and classification of power quality disturbances. Wavelet transform has the ability to analyse ...


    By Inderscience Publishers

  • Civil Society Groups help make electricity affordable and sustainable

    Worldwide, one out of every five people lacks access to modern electricity. Affordability, quality of service, and social and environmental impacts pose great challenges in providing people with the power they need for lighting, cooking, and other activities. Good governance involving open and inclusive practices is essential to ...

  • A comparative study on the grid integrated wind energy conversion systems (WECS) using different generator models

    A huge number of wind generators are going to be connected with the existing network in the near future. Therefore, it is necessary to analyse various models of wind energy conversion systems (WECS) for the purpose of studying the impacts upon grid. This paper presents comparative study on grid connected WECS having two different wind turbine generator systems (WTGS): model 1 [WTGS having doubly ...


    By Inderscience Publishers

  • UPS basics

    Everything you ever wanted to know about uninterruptible power systems but were afraid to ask. By Chris Loeffler, Product Manager, BladeUPS and Data Center Solutions, Distributed Power Quality, and Ed Spears, Product Manager, Eaton Power Quality Solutions Operation Eaton Corporation Executive summary Budgeting for electricity, securing adequate supplies of it and ...


    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, ...

  • Power quality improvements employing multipulse full-wave AC-DC converters

    In this paper, a set of full-wave AC-DC converters are investigated for power quality improvement in AC mains and DC output. A detailed classification of these full-wave AC-DC converter configurations is made in different transformer connections and several new configurations of isolated and non-isolated full-wave AC-DC converters are developed to meet specific application requirements. The ...


    By Inderscience Publishers

  • Implementation of ADALINE on a DSP for real-time measurement of current harmonics

    The objective of this paper is to implement an ADAptive LINear Element (ADALINE) for real-time measurement of harmonics in load current waveform using a digital signal processor (DSP). Harmonics cause many ill effects and reduce power quality. Harmonics are being measured by fast fourier transform (FFT) algorithm executed on a microprocessor or DSP system. The FFT algorithm implemented as per ...


    By Inderscience Publishers

  • Integration of embedded generation in local grid using STATCOM

    The renewable sources of energy are being connected to the local distribution system/local grid leading to embedded generation. As these sources are intermittent in nature, they impose technical challenges in the power system operation which include power quality related problems of local grid. The performance of the system has to be evaluated while connecting these sources to the local ...


    By Inderscience Publishers

  • A practical approach for beginning the process of technology roadmapping

    The study addresses the need for a robust yet practical technology roadmapping method that considers four major factors: input from consumers who use the technology; input from engineers who develop the technology; the technological gap between the roadmapped technology and competing technologies; and future changes in consumer preferences. The proposed method begins by using conjoint analysis of ...


    By Inderscience Publishers

  • Power quality indices measurement using the S-transform

    The paper presents the S-transform (ST) technique as a new tool for power quality indices measurement. A key feature of the ST is its accurate time-frequency (amplitude and phase) domain. With this feature, it is possible to redefine the calculation of the power quality indices in the ST domain based on the harmonic content of the signals. In addition, using the time information provided by this ...


    By Inderscience Publishers

  • Performance evaluation of CSI-based unified power quality conditioner using artificial neural network

    In recent years unified power quality conditioner (UPQC) is being used as a universal active power conditioning device to mitigate both current as well as voltage harmonics at a distribution end of power system network. The performance of UPQC mainly depends upon how quickly and accurately compensation signals are derived. The artificial neural network (ANN) trained with conventional compensator ...


    By Inderscience Publishers

  • Security, trust, and QoS in next-generation control and communication for large power systems

    The present communication architecture supporting control of the electric power grid makes it difficult to use the wealth of data collected at high rates in substations, retarding their use in new applications for controlling the grid. A flexible, real-time data network would make it possible to use these data for many more control and protection applications, potentially increasing the grid's ...


    By Inderscience Publishers

  • Power quality evaluation in deregulated power system using matrix method

    Power quality has emerged as a challenging area in the context of deregulation, wherein electricity distribution buyers and sellers carry out mutually agreed-upon exchanges. A market for active power and reactive power is installed in many places as a result of a deregulation process. However, the power-quality-related market is in the developing stage. For a given site, the power quality ...


    By Inderscience Publishers

  • Long Tan Hydroelectric Dam

    Black & Veatch is the design and construction consultant for the world's largest roller-compacted concrete dam, which will be the world's fourth largest hydropower station and protect 12 million people from flooding. China must create urban infrastructure for the equivalent of the city of Houston, Texas, every month for the next 30 years to accommodate the relocation of 280 million rural ...


    By Black & Veatch Corporation

  • Harmonic and interharmonic distortion analysis in the grid-connected wind electric generator

    The operation of wind turbines has an impact on the power quality at the connected electric network. The integration of wind electric generators with the power grid becomes a headache for power engineers in several aspects. Harmonic distortion is one of the most important phenomena which affect the grid performance. This paper provides an in-depth discussion on harmonic and interharmonic ...


    By Inderscience Publishers

  • Power quality issues and power electronics

    Harmonics in the distribution network have become an area of keen interest for utilities, power consumers and academic researchers due to its potentially disruptive impact on economy. This interest has lead to the development of a large number of standards that contain the problems as well as technological solutions to meet the specifications of the standards. In this paper, we discuss the ...


    By Inderscience Publishers

  • Harmonics impacts evaluation for single-phase traction load

    A planned electric utility substation supplying the single-phase traction load at New Haven, CT, USA was evaluated with regard to several important aspects of power quality. Harmonics: the trains are non-linear and time-varying loads. Harmonic current levels were measured at a nearby single-phase traction substation, which serves the same line as the future New Haven substation. These results ...


    By Inderscience Publishers

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