Automatic Overcurrent Protection Coordination after Distribution Network Reconfiguration Based on Peer-To-Peer Communication

Abstract

Electrical power systems represent a fundamental part of society, and their efficient operations are of vital importance for social and economic development. Power systems have been designed to withstand interruptions under already provided safety and quality principles; however, there are some extreme and not so frequent events that could represent inconveniences for the correct operation of the entire system. For this reason, in recent years the term resilience, which serves to describe the capacity of a system to recover from an unwanted event, has been analyzed on planning, operation and remedial actions. This work is focused on the implementation of a topological reconfiguration tool, which is oriented to change the structure of primary feeders based on changing the status of switchgears. Once the distribution network has been reconfigured, an algorithm of protection coordination is executed based on communication peer-to-peer between Matlab and PowerFactory, which develops an adaptive calculation to determine the current setting and the time multiplier setting. The reconfiguration and coordination protection algorithms could be implemented and evaluated on different distribution networks, areas and locations.

Development of IoT-Based Portable Power Quality Monitoring on Microgrids by Enhancing Protection Features

“…The relay can function as an overload and short circuit. This relay has a working principle: overcurrent relays can be inverse, definite, and instantaneous time overcurrent relays [33], [34], [35], as shown in Fig. 3.…”

“…The processing speed is 0.1 s. Generally, it can be less than 0.08 s. The relay works with consideration of short circuit faults in a short time. Table 1 shows the constant parameters used in the settings [33], [34], [35]. The following equation describes the mathematical model for inverse-time curves,…”

Distribution Network Reconfiguration Applied to Multiple Faulty Branches Based on Spanning Tree and Genetic Algorithms

“…In addition, to secure the properly operation of the distribution system, the optimization algorithm must respect the operational constraints. The constraint in Equation ( 6) is the voltage limit at the system buses, the constraint in Equation ( 7) is the limit of current that flows through the lines, the constraint in Equation ( 8) limits the total load to be lower than the feeder capacity and the constraint in Equation ( 9) indicates that the topology of the system remains radial [11,31,32].…”

Impacts of Length Scale Parameter on Material Dependent Thermoelastic Damping in Micro/nanoplates Applying Modified Coupled Stress Theory

“…In recent times, small structural components like micro/nanoplates are extensively used in microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) attributable to its distinct and finest characteristics [1]. Micro/nano type rectangular plate based resonators are universally used for far-ranging applications such as in fields like energy harvesting [2,3], robotics [4,5], mass sensing [6,7], electronic filtering [8,9], communication systems [10,11], autonomous distribution systems [12,13], aerospace industry [14,15], navigation systems [16,17] etc.…”