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  5. Inertia considerations within unit commitment and economic dispatch for systems with high non-synchronous penetrations
 
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Inertia considerations within unit commitment and economic dispatch for systems with high non-synchronous penetrations

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Author(s)
Daly, Pádraig 
Flynn, Damian 
Cunniffe, Noel 
Uri
http://hdl.handle.net/10197/8090
Date Issued
02 July 2015
Date Available
21T10:20:40Z October 2016
Abstract
The priority dispatch status of non-synchronous renewable generation (wind, wave, solar), and increasing levels of installed high voltage direct current interconnection between synchronous systems, is fundamentally changing unit commitment and economic dispatch (UCED) schedules. Conventional synchronous plant, the traditional provider of services which ensure frequency stability - synchronising torque, synchronous inertia and governor response - are being displaced by marginally zero cost non-synchronous renewables. Such a trend has operational security implications, as systems - particularly synchronously isolated systems - may be subject to higher rates of change of frequency and more extreme frequency nadirs/zeniths following a system disturbance. This paper proposes UCED-based strategies to address potential shortfalls in synchronous inertia associated with high non-synchronous penetrations. The effectiveness of the day-ahead strategies is assessed by weighing the cost of the schedules against the risk level incurred (the initial rate of change of frequency following a generation-load imbalance), and the level of wind curtailment engendered.
Sponsorship
Irish Research Council
Type of Material
Conference Publication
Publisher
IEEE
Copyright (Published Version)
2015 IEEE
Keywords
  • Economic dispatch

  • Inertia

  • Unit commitment

  • Wind generation

DOI
10.1109/ptc.2015.7232567
Language
English
Status of Item
Peer reviewed
Description
2015 IEEE PowerTech, Eindhoven, Netherlands, 29 June - 2 July 2015
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
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Electrical and Electronic Engineering Research Collection
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