All the Rolls-Royce medium speed engines come in numerous configurations and are applicable for different operational modes. This includes baseload, grid balancing and peaking, and thus perfect to support variable renewable energy sources in hybrid systems. Multiple units arranged in modular power plants in the range 20MW-1GW provide the required flexibility whilst ensuring economical operation at any power plant output level.
Designed to run with air excess ratio around 2.0 and above, the engines have excellent capability to meet quick and frequent load changes, which is essential for island-mode operation, such as isolated operation of microgrids. Start times of 3 minutes from start command to rated power output have been committed to, using the B35:40V20AG2 genset.
By utilising the engine’s waste heat, in combined cycle or CHP, total efficiency can reach over 95%. This is currently used extensively in district heating applications or trigeneration applications, where heat is used locally and the electrical power is either consumed locally in a micro grid or exported to the national grid.
A medium speed power plant can be built anywhere, and is tailored to meet the specific requirements in every case due to its versatile building blocks. Rolls-Royce offers modular and flexible power plant arrangements that have been developed over many years based on experience from a vast range of operating conditions from very low to very high ambient temperatures (-50C to +50C), and from very dry to tropical conditions.
Rolls-Royce’s power plant solutions enables the energy transition towards a greener future, with economical and reliable balance and backup power to the grid, or as the back-bone of microgrids.
Date: Dec 3, 2018