Micro Gas Turbine Power Generation System based on Superconducting Magnetic Energy Storage to Cope with Pulsed Power Load

Abstract

Micro gas turbine (MGT), due to its own combustion chamber delay, exhaust delay, and the existence of several other inertial links, leads to its slow load response, and shows a relatively strong delay as well as a relatively strong inertia when dealing with pulsed power load. In other words, it can not respond quickly to changes in load. When the load impact is extremely strong, it may lead to the collapse of the system. This makes it an important issue to make the MGT power generation system quickly balance the instantaneous power difference under the pulsed power load condition. In this paper, to cope with this possible situation, superconducting magnetic energy storage(SMES) with fast response is considered as the power-fast compensation method. When the pulsed power load is detected, the SMES is given priority to provide power for it, and to ensure the smoothness of the superconducting output power, the instantaneous power output of the SMES is considered as its power exponential change law with time. The simulation results show that when the MGT generates power independently, it shows strong oscillation characteristics in response to the shock load. And may even cause the DC side voltage to cross the limit because the power cannot be regulated in time, so that the system is shut down. In contrast, the SMES as the power generation compensation of the MGT power generation system shows excellent shock load resistance when dealing with pulsed power load.