Modelling and analysis of nuclear reactor system coupled with a liquid metal battery

Author:

Shigrekar Amey1,Peng Jiangkai2,Olowu Temitayo O.1ORCID,Gallego Dias Fernando3,Westover Tyler1

Affiliation:

1. Idaho National Laboratory Idaho Falls Idaho USA

2. National Renewable Energy Laboratory Golden Colorado USA

3. Midcontinent Independent System Operator, Inc. Carmel Indiana USA

Abstract

AbstractTraditionally, nuclear power plants in the U.S. provide baseload power to the power grid because they have less flexibility for ramping their output power than natural gas peaking plants. However, achieving climate goals to reduce the consumption of fossil‐based natural gas places pressure on nuclear power plants and other power generators to ramp up their power output to balance grid generation with demand. This paper presents the modelling and performance analysis of a nuclear reactor system (NRS) coupled to a liquid‐metal battery (LMB) to improve its dynamic response and enable its black start capability. The NRS and LMB thermal behaviour are modelled in Dymola, while the electrical dynamics of the LMB and power grid are modelled in RTDS‐RSCAD. Both simulation platforms are coupled and share their thermal and electrical data using a Transmission Control Protocol/Internet Protocol (TCP/IP) communication protocol. The dynamic performance of the NRS‐LMB integration is tested on the IEEE 9 bus, which demonstrates its ability to respond and provide frequency and voltage regulation. The black start capability of the NRS‐LMB is also evaluated by simulating a grid outage and using the LMB to supply the auxiliary loads required to bring the NRS back online as soon as possible. The results show that coupling an NRS to an LMB improves the system dynamic performance and enables it to black start after being disconnected from the grid for several days.

Publisher

Institution of Engineering and Technology (IET)

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