NDLI: Linear daily UC model to improve the transient stability of power system

Content Provider	IET Digital Library
Author	Naghdalian, Salar Amraee, Turaj Kamali, Sadegh
Abstract	As coherency of generators decreases, the risk of rotor angle instability increases, especially under severe contingencies. The slow coherency as a network characteristic may be controlled by the locations of committed generators. Unit commitment (UC) problem is conventionally carried out regarding operational and network constraints. In this study, a two-step strategy is developed to promote the slow coherency via the network constrained UC (NCUC) model on a daily horizon. First, conventional NCUC is executed. The most important generators with both economic and coherency merits are then determined as representative generators. In the second step, the Slow Coherency Based Unit Commitment (SCBUC) is re-optimisedaccording to the results obtained from the first step, using a multi-objective function. The first part of the multi-objective function is devoted to the cost of generation, start-up, and shutdown of generators. The goal of the second part of the multi-objective function is to maximise the coherency between the committed generators to reach a transient stability margin. The proposed model is converted to a mixed integer linear programming model. The performance of the proposed method of promoting transient stability is investigated using the dynamic IEEE 118-bus test system.
Starting Page	2877
Ending Page	2888
Page Count	12
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 13, Jul (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5102
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-04-23
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Committed Generators Conventional NCUC Daily Horizon Generator Decreases IEEE Standards Important Generator Integer Programming Linear Daily UC Model Linear Programming Load Flow Mixed Integer Linear Programming Model Multiobjective Function Network Characteristic Optimisation Technique Power Generation Dispatch Power Generation Economics Power Generation Scheduling Power System Power System Control Power System Economics Power System Managemen Power System Operation Power System Security Power System Transient Stability Representative Generator Rotor Angle Instability Increases Severe Contingency Slow Coherency Transient Stability Margin Two-step Strategy Unit Commitment Problem
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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