- Title
- Frequency-constrained unit-commitment using analytical solutions for system frequency responses considering generator contingencies
- Creator
- Rabbanifar, Payam; Amjady, Nima
- Date
- 2020
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/191711
- Identifier
- vital:17882
- Identifier
-
https://doi.org/10.1049/iet-gtd.2020.0097
- Identifier
- ISSN:1751-8687 1751-8695
- 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.
- Publisher
- The Institution of Engineering and Technology
- Relation
- IET generation, transmission & distribution Vol. 14, no. 17 (2020), p. 3548-3560
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright IET
- Subject
- Analytical solutions; Area frequencies; Boolean functions; Control engineering computing; Droop; Frequency control; Frequency response; Frequency viewpoint; Frequency‐constrained unit commitment model; Frequency‐constrained unit‐commitment; Generation unit; Generator contingencies; Generator outage; Inertial characteristics; Integer programming; Linear programming; Modified analytical functions; Modified extreme deviations; Modified frequency‐dependent constraints; Online generator; Post‐contingency responses; Power engineering computing; Power generation dispatch; Power generation scheduling; Power system control; Power system security; Primary frequency regulation reserve; PseudoBoolean function theorem; Research Article; Steady state frequency responses; System frequency responses; System pre‐contingency power dispatch; Two‐area power systems; 4006 Communications engineering
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