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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Sustainable Energy Systems
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1437271
This article is part of the Research Topic Optimal Scheduling of Demand Response Resources In Energy Markets For High Trading Revenue and Low Carbon Emissions View all 12 articles

Security constrained unit commitment considering frequency and voltage stability with multi resource participation

Provisionally accepted
Zidong Zhou Zidong Zhou *
  • School of Electrical Engineering, Shanghai University of Electric Power, Shanghai, China

The final, formatted version of the article will be published soon.

    The rapid increase in the proportion of renewable energy sources has led to a reduction in the relative share of synchronous units, which has resulted in a decline in the inertia of the power system and a decrease in its voltage support capacity. This has given rise to a number of issues related to the frequency and voltage stability of the power system. In order to ensure the system's frequency and voltage stability, it is necessary to maintain a number of synchronous units online in the day-ahead generation schedule. Firstly, the dynamic frequency change process after power system faults is discussed, a linear expression for the frequency stability constraints involving energy storages and wind turbines is derived. Secondly, the bus short-circuit capacity is characterized to describe the strength of voltage support, the minimum short-circuit capacity requirement of the bus is solved based on the transient voltage recovery problem after the clearance of short-circuit faults. The total short-circuit capacity provided by the unit to the bus is calculated through the network reactance matrix, the voltage stability constraint is established. Subsequently, the security-constrained unit commitment model considering frequency and voltage stability(FVS-SCUC) is established. Finally, the effectiveness of the proposed model is demonstrated through numerical simulation of the IEEE-39 system with storage and wind turbines. The model can ensure the frequency and voltage security of the system, and the renewable energy output can be improved after considering energy storage.After considering the frequency regulation effect of energy storage and wind turbine, as well as the voltage regulation effect of energy storage, the overall system cost has been reduced by nearly 30%.

    Keywords: energy storage, Frequency stability, Network reactance matrix, Security Constrained Unit Commitment, Voltage stability, Wind Turbine

    Received: 23 May 2024; Accepted: 24 Jul 2024.

    Copyright: © 2024 Zhou. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Zidong Zhou, School of Electrical Engineering, Shanghai University of Electric Power, Shanghai, China

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