HYB25-9
Multifunctional HIL Testbench for Hybrid Energy Storage Systems Analysis
04 HYB25-9
Presented by: Gustavo Navarro
CIEMAT, Spain
Energy storage systems (ESSs) have become crucial in various energy sectors and activities, enhancing the flexibility of electric power systems, boosting the integration of non-dispatchable renewable generation, and fostering the electrification of transportation, among others. ESSs differ in their main features, from specific power and energy to cyclability and time response. This diversity means that certain applications may struggle to meet technical requirements with a single storage technology. For instance, an ESS might be oversized in terms of energy capacity to satisfy power demands, or a suitable ESS in terms of energy and power may be unsuitable due to slow response times. In such cases, hybridizing ESSs to form hybrid ESSs (HESSs) is a practical solution. Besides, HESSs can also extend the lifespan of individual ESSs, reducing replacement costs over a project's duration.
This paper is framed within three distinct projects concerning HESS integration: the HYBRIDHYDRO project, which involves hybridizing a hydroelectric power plant with lithium-ion batteries (LiBs) and supercapacitors (SCs) to mitigate wear on hydro-mechanical components during primary and secondary frequency regulation; the StoRIES project, providing access to world-class research infrastructures to advance the techno-economic development of HESS; and the POSEIDON project, integrating a combination of flywheels (FWs) and SCs into maritime vessels to address the technical limitations of LiBs in marine transportation.
In these projects, the Unidad de Accionamientos Eléctricos at CIEMAT utilizes a multifunctional hardware-in-the-loop (HIL) test bench in their laboratory to accomplish the technical tasks. This facility comprises, in general terms, a HIL platform, a 70kWh–736V LiB system, a 125kW–768Wh SCs system, a 25kW–6MJ FW system, a 50kW controllable load, a 4kW electrolyzer, an AC/AC grid emulator converter, and the remaining power converters associated with the different ESSs. The HIL platform is capable of emulating diverse generation and consumption scenarios, AC grid dynamics, and any other ESS that may be integrated with the real equipment available in the laboratory.
This paper outlines the multifunctional HIL test bench, the specific configuration employed in each project to analyze the hybrid energy storage system, and the preliminary results of the tests conducted within the test bench, where the different HESSs combinations offer a versatile approach to meeting the projects' technical requirements while optimizing performance and cost.
This paper is framed within three distinct projects concerning HESS integration: the HYBRIDHYDRO project, which involves hybridizing a hydroelectric power plant with lithium-ion batteries (LiBs) and supercapacitors (SCs) to mitigate wear on hydro-mechanical components during primary and secondary frequency regulation; the StoRIES project, providing access to world-class research infrastructures to advance the techno-economic development of HESS; and the POSEIDON project, integrating a combination of flywheels (FWs) and SCs into maritime vessels to address the technical limitations of LiBs in marine transportation.
In these projects, the Unidad de Accionamientos Eléctricos at CIEMAT utilizes a multifunctional hardware-in-the-loop (HIL) test bench in their laboratory to accomplish the technical tasks. This facility comprises, in general terms, a HIL platform, a 70kWh–736V LiB system, a 125kW–768Wh SCs system, a 25kW–6MJ FW system, a 50kW controllable load, a 4kW electrolyzer, an AC/AC grid emulator converter, and the remaining power converters associated with the different ESSs. The HIL platform is capable of emulating diverse generation and consumption scenarios, AC grid dynamics, and any other ESS that may be integrated with the real equipment available in the laboratory.
This paper outlines the multifunctional HIL test bench, the specific configuration employed in each project to analyze the hybrid energy storage system, and the preliminary results of the tests conducted within the test bench, where the different HESSs combinations offer a versatile approach to meeting the projects' technical requirements while optimizing performance and cost.