Multi-energy Supply Microgrids To Enhance the Resilience of the Electric/Gas/Heat Utility Grid Systems Under Natural Disasters

摘要

Under the natural disasters, electric, gas, and heat utility grid infrastructures are often destroyed, which result in the interrupt of the load demands. In order to enhance the resilience of the utility grid supply networks, in this paper, multienergy supply microgrids are installed, which can significantly reduce the electricity/gas/heat load shedding. First, a temporalspatial natural disaster destructive model is built, which includes three parts: temporal-spatial influence assessment of the disasters (A); destructive level evaluation of the electric/gas/heat utility grid networks (B); energy supply ability calculation of the utility grid networks (C). Second, based on the results of model C, an optimal scheduling model of multi-energy supply gridconnected microgrid is developed. At last, the electricity/gas/heat load shedding with installed microgrids and without microgrids are calculated. The simulation results showed that with the installed microgrids, the load shedding of electricity at electric node7, heating at heat node13, and gas at gas nodelO were reduced by 59.41%, 32.92%, and 32.87%, respectively.