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Load frequency control

Xem 1-13 trên 13 kết quả Load frequency control
  • This paper presents an observer output-feedback load frequency control for power systems with uncertain parameters and time delays in communication networks. First, an observer-based controller is designed dependent on only the observer output. Therefore, the conservatism is reduced and the robustness is enhanced.

    pdf16p vioishi2711 01-07-2019 4 0   Download

  • This study investigates load frequency control based generalized extended state observer (GESO) for interconnected power system subject to multi-kind of the power plant. First, the mathematical model of the interconnected power system is proposed based on the dynamic model of thermal power plant with reheat turbine and hydro power plant.

    pdf18p nguaconbaynhay11 07-04-2021 0 0   Download

  • Currently, in Vietnam electricity market, hydropower plants still account for a large proportion approximately 38%. Thus, study on control problems of the hydropower plants plays an extremely important role. Load – frequency control is one of the most significant control problems. Major objectives of such a control strategy are to focus on maintaining the system frequency at a nominal value (50Hz in Vietnam) and the tie-line power interchange at a scheduled value.

    pdf12p covid19 03-03-2020 24 0   Download

  • This paper introduces such two typical controllers based on artificial neural networks, namely ANN-based NARMA and ANN- based MRAC. Numerical simulation results obtained by such two controllers when solving the LFC of a twocontrol-area interconnected hydropower grid have verified the feasibility and superiority of the proposed control strategies.

    pdf12p covid19 03-03-2020 12 0   Download

  • In this paper, a method for determining the optimal location and control parameters of TCSC in the wholesale electricity market, which consists of price-sensitive loads and ancillary services related to frequency control has been suggested.

    pdf6p visasuke2711 25-04-2019 7 0   Download

  • Integrating statistics and dynamics within a single volume, the book will support the study of engineering mechanics throughout an undergraduate course. The theory of two- and three-dimensional dynamics of particles and rigid bodies, leading to Euler's equations, is developed. The vibration of one- and two-degree-of-freedom systems and an introduction to automatic control, now including frequency response methods, are covered.

    pdf96p kennybibo 14-07-2012 46 4   Download

  • This paper addresses the problem of frequency regulation in an AC microgrid under variable wind speed and multiple random load disturbances and proposes a fuzzy gain scheduled proportional-integralderivative (FGSPID) controller to withstand these uncertainties and disturbances and provide an improved performance.

    pdf5p praishy2 27-02-2019 10 0   Download

  • With the development of power system interconnection, the low-frequency oscillation is becoming more and more prominent which may cause system separation and loss of energy to consumers. This paper presents an innovative robust control for power systems in which the operating conditions are changing continuously due to load changes. However, practical implementation of robust control can be fragile due to controller inaccuracies (tolerance of resistors used with operational amplifiers).

    pdf9p kethamoi1 17-11-2019 10 0   Download

  • Current transformers are commonly used electrical devices to measure the current of electric loads. To assess the quality and accuracy of the current transformer, one of the necessary requirements is to evaluate the accuracy of this object under the condition that the primary current has a large distorted waveform and is composed of harmonics. This has led to the need to create a programmable current source capable of generating current that contains basic harmonic components and high harmonics according to present standards.

    pdf6p nguathienthan7 26-08-2020 8 0   Download

  • This paper reveals and analyzes the frequency bifurcation phenomena in the fractional-order inductive power transfer (FOIPT) system with series-series compensation topology. Using fractional calculus theory and electric circuit theory, the circuit model of the series-series compensated FOIPT system is first proposed, then taking the case of a single variable fractional order as an example, three frequency analytical solutions of frequency bifurcation equation are solved by using Taylor expansion method.

    pdf8p dayhoctainha 10-09-2020 2 0   Download

  • The Scheduler To help simplify management tasks, as well as providing a rich set of functionality for complex scheduling needs, Oracle provides a collection of functions and procedures in the DBMS_SCHEDULER package. Collectively, these functions are called the Scheduler, and they are callable from any PL/SQL program. The Scheduler lets database administrators and application developers control when and where various tasks take place in the database environment.

    pdf486p nhacsihuytuan 13-04-2013 32 3   Download

  • In this paper, an improved fuzzy particle swarm optimization (IFPSO) algorithm is proposed and used to solve the optimization problem for WTRS under frequency and load disturbances conditions.

    pdf17p vivalletta2711 11-01-2020 7 0   Download

  • MULTIDIMENSIONAL PRMA The PRMA protocol extended for operation on a hybrid CDMA/TDMA air interface is defined in the following. This extended version of PRMA is referred to as multidimensional PRMA or MD PRMA. First, the basic protocol suitable for frequency-division duplexing is described. Then, the implications of different approaches to time-division duplexing on the protocol operation will be discussed. Finally, the two investigated approaches to access control, namely load-based access control and backlog-based access control, will be introduced....

    pdf21p huggoo 20-08-2010 83 12   Download

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