Analysis of the Technical Feasibility of Network Parallelism for Load Transfers in Contingency Situations

Abstract

Electricity suppliers have increasingly invested in technology solutions, especially in the automation area, to improve the electricity supply to their consumers. In contingency situations, the process of restoring the electric energy consists of identifying and isolating the fault, quickly restoring the power supply to unaffected areas, according to the reconfiguration of the network through the opening or closing of the maneuver equipment. After fault correction, new maneuvers are performed to return to the normal state of the networks. Hence, the reactive characteristics of network elements such as line inductances and the loads of capacitor banks, can originate undesirable electromagnetic transients during the switching maneuvers. Therefore, this paper aims to present the development of a methodology for the analysis of the technical viability of parallelism in the distribution networks with capacitor banks for the reestablishment of electric energy, considering the cascade of loads between the network feeders. The proposed study is, therefore, a particularity of the distribution systems and the validation of the operational feasibility of the maneuvers will be verified from computational simulations performed with the ATPDraw software.