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Kevin Tomsovic - One of the best experts on this subject based on the ideXlab platform.

  • Application of linear matrix inequalities for load Frequency Control with communication delays
    IEEE Transactions on Power Systems, 2004
    Co-Authors: Kevin Tomsovic
    Abstract:

    Load Frequency Control has been used for decades in power systems. Traditionally, this has been a centralized Control by area with communication over a dedicated and closed network. New regulatory guidelines allow for competitive markets to supply this load Frequency Control. In order to allow an effective market operation, an open communication infrastructure is needed to support an increasing complex system of Controls. While such a system has great advantage in terms of cost and reliability, the possibility of communication signal delays and other problems must be carefully analyzed. This paper presents a load Frequency Control method based on linear matrix inequalities. The primary aim is to find a robust Controller that can ensure good performance despite indeterminate delays and other problems in the communication network.

  • communication models for third party load Frequency Control
    IEEE Transactions on Power Systems, 2004
    Co-Authors: S Bhowmik, Kevin Tomsovic, Anjan Bose
    Abstract:

    With deregulation of the power generation sector, the necessity for an enhanced and open communication infrastructure to support an increasing variety of ancillary services is apparent. A duplex and distributed communication system seems to be the most suitable solution to meet and ensure good quality of these services. Parameters needed and additional limits introduced by this new communication topology must be investigated and defined. This paper focuses on the communication network requirements for a third party load Frequency Control service. Data communication models are proposed based on queuing theory. Simulation is performed to model the effects of certain types of signal delays on this ancillary service.

Per Norrlund - One of the best experts on this subject based on the ideXlab platform.

Weijia Yang - One of the best experts on this subject based on the ideXlab platform.

Oriol Gomisbellmunt - One of the best experts on this subject based on the ideXlab platform.

  • coordinated operation of wind turbines and flywheel storage for primary Frequency Control support
    International Journal of Electrical Power & Energy Systems, 2015
    Co-Authors: Francisco Diazgonzalez, Melanie Hau, Andreas Sumper, Oriol Gomisbellmunt
    Abstract:

    This work assesses the participation of wind power plants in primary Frequency Control support. To participate in Frequency Control-related tasks, the wind power plants have to maintain a certain level of power reserves. In this article, the wind power plant is equipped with a flywheel-based storage system to fulfil the power reserve requirements set by the network operator. The article focuses on two main aspects: the definition of the Control strategy to derate the wind turbines to provide a part of the required power reserves; and the coordinated regulation of the power reserves of the wind turbines and the flywheels while participating in primary Frequency Control. This coordinated regulation enables the wind power plant to maintain the net level of power reserves set by the network operator while alleviating the need of deloading the wind turbines. The performance of the proposed Control schemes are shown by simulation.

Poul Ejnar Sorensen - One of the best experts on this subject based on the ideXlab platform.

  • coordinated fast primary Frequency Control from offshore wind power plants in mtdc system
    IEEE International Energy Conference, 2016
    Co-Authors: Jayachandra N Sakamuri, Anca Daniela Hansen, Nicolaos Antonio Cutululis, Mufit Altin, Poul Ejnar Sorensen
    Abstract:

    In this paper, coordinated fast primary Frequency Control (FPFC) from offshore wind power plants (OWPPs) integrated to surrounding onshore AC power system through a three terminal VSC HVDC system is presented. The onshore AC grid Frequency variations are emulated at offshore AC grid through appropriate Control blocks, based on modulation of the DC grid voltage. The proposed FPFC produces a power reference to the OWPP based on the Frequency deviation and its rate of change measured in the offshore AC grid. Moreover, the impact of wind speed variations on the OWPP active power output and the dynamics of wind turbine are also discussed. The corresponding impact of OWPPs active power output variation at different wind speeds on the power system Frequency Control and DC grid voltage is also presented. The results show that the proposed coordinated fast primary Frequency Control from OWPPs improves the power system Frequency while relieving the stress on the other AC grid participating in Frequency Control.

  • Frequency Control in autonomous power systems with high wind power penetration
    IEEE Transactions on Sustainable Energy, 2012
    Co-Authors: I D Margaris, Stavros A Papathanassiou, Nikos D Hatziargyriou, Anca Daniela Hansen, Poul Ejnar Sorensen
    Abstract:

    This paper presents an investigation on wind turbine (WT) contribution to the Frequency Control of noninterconnected island systems. The capability of WTs to participate in the primary Frequency Control and offer primary reserve is discussed. The investigation includes both transient Frequency support (inertial response) and permanent Frequency response (droop characteristic), as well as the combined application of these concepts. A quantitative analysis is presented for the expected benefits and drawbacks of each method, including the appropriate selection of their parameters. The power system of Rhodes Island has been selected as a study case, which includes different types of conventional generation and the three basic WT types, based on Active-Stall Induction Generator (ASIG), Doubly Fed Induction Generator (DFIG), and Permanent Magnet Synchronous Generator (PMSG).