Optimized allocation method of the VSC-MTDC system for frequency regulation reserves considering the cost

Journal Article · Fri Apr 30 00:00:00 EDT 2021 · CSEE Journal of Power and Energy Systems

DOI:https://doi.org/10.17775/cseejpes.2020.05800· OSTI ID:1820711

Sun, Kaiqi ^[1]; Xiao, Huangqing ^[2]; Liu, Yilu ^[2]

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1. Univ. of Tennessee, Knoxville, TN (United States)
2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In recent years, the interconnection of asynchronous power grids through the VSC-MTDC system has been proposed and extensively studied in light of the potential benefits of economical bulk power exchanges and frequency regulation reserves sharing. This paper proposed an optimized allocation method for sharing frequency regulation reserves among the interconnected power systems and the corresponding frequency regulation control of the VSC-MTDC system under emergency frequency deviation events. Firstly, the frequency regulation reserve classification is proposed. In the classification, the available frequency response capacity reserves of each interconnection are divided into commercial reserves and regular reserves. While the commercial reserves are procured through long-term contracts, the regular reserves are purchased based on market prices of frequency regulation services. Secondly, based on the proposed frequency regulation reserve classification, a novel frequency regulation control is then introduced for the VSC-MTDC system. This control method could minimize the costs of the disturbed power grid for the needed frequency response supports from the other power grids. Simulation verifications are performed on a modified IEEE 39 bus system and a highly reduced power system model representing the North American grids. The simulation verification indicates that the developed frequency regulation control significantly reduced ancillary service costs of the disturbed power grid.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1820711
• Journal Information: CSEE Journal of Power and Energy Systems, Journal Name: CSEE Journal of Power and Energy Systems Journal Issue: 1 Vol. 8; ISSN 2096-0042
• Publisher: Chinese Society for Electrical Engineering (CSEE)
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
VSC-MTDC
frequency regulation control
optimized reserve allocation
response reserve classification