NDLI: Frequency-constrained unit-commitment using analytical solutions for system frequency responses considering generator contingencies

Content Provider	IET Digital Library
Author	Rabbanifar, Payam Amjady, Nima
Abstract	The frequency responses of a power system following a generator outage are closely related to the commitment states of generators, which describe the droop and inertial characteristics and system pre-contingency power dispatch. This study presents a new model to estimate the transient and steady state frequency responses of two-area power systems at any moment following the loss of an online generator. In the proposed model, the deviations of tie-flow, area frequencies and rate of change of area frequencies as well as the extreme values of these functions and their associated time of occurrence following the outage of a generation unit are derived as modified analytical functions. A new approach is also proposed to linearise the modified extreme deviations based on pseudo-Boolean function theorem. In addition, a frequency-constrained unit commitment model with modified frequency-dependent constraints incorporating primary frequency regulation reserve is presented as a mixed-integer linear programming problem. The results indicate that the proposed method gives acceptable approximations for post-contingency responses and can ensure power system security from frequency viewpoint.
Starting Page	3548
Ending Page	3560
Page Count	13
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 17, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.0097
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-06-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Analytical Solutions Area Frequencies Boolean Function Control Engineering Computing Control of Electric Power System Control System Analysis Droop Formal Logic Frequency Control Frequency Response Frequency Viewpoint Frequency-constrained Unit Commitment Model Frequency-constrained Unit-commitment Generation Unit Generator Contingency Generator Outage Inertial Characteristic Integer Programming Linear Programming Modified Analytical Function Modified Extreme Deviations Modified Frequency-dependent Constraint Online Generator Optimisation Technique Post-contingency Responses Power Engineering Computing Power Generation Dispatch Power Generation Scheduling Power System Control Power System Economics Power System Managemen Power System Operation Power System Security Primary Frequency Regulation Reserve PseudoBoolean Function Theorem Steady State Frequency Responses Synthesis Method System Frequency Responses System Pre-contingency Power Dispatch Two-area Power System
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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