Abstract
A microgrid consists of a cluster of renewable energy sources, energy storage elements, and loads. One of the main objectives of a microgrid is to provide reliable and high-quality power to the loads. Under normal operating conditions, this is achieved through suitable Power Management Strategy (PMS). However, under emergency conditions, such as the failure of any source, overloads, or faults, the PMS may not be able to retain the microgrid in operating conditions. Any emergency condition may demand a significant change in control and coordination between various subsystems of the microgrid to survive and continue the operation. This feature makes a microgrid "a fault resilient" system as visualized in its objectives. This paper proposes a novel Coordinated Power Management (CPM) strategy based on three-layer hierarchical control for an autonomous Low Voltage DC (LVDC) microgrid. The proposed CPM strategy ensures the continuation of the microgrid operation under normal and emergency conditions. An emergency control layer is established to extend the microgrid operation during an emergency condition. The performance of the proposed control scheme is validated through simulation and experimental results.
Highlights
Some of the challenges the conventional power generation faces are the environmental pollution, the reduction in the fossil fuels reservoirs, and the continuous increase in the power demand, which lead to increased penetration of the RES based Distributed Generation (DG)
It is ensured that the Solar Photovoltaic (SPV) and the battery handle the load requirement
This paper presented the implementation of a hierarchically controlled Low Voltage DC (LVDC) MG with SPV, fuel cell source as RES components, and Energy Storage Systems (ESSs) comprised of battery based and ultracapacitor based sources
Summary
Some of the challenges the conventional power generation faces are the environmental pollution, the reduction in the fossil fuels reservoirs, and the continuous increase in the power demand, which lead to increased penetration of the RES based Distributed Generation (DG). Generally power management with droop control is adopted based on the capacity of individual sources This method is simple and easy to implement with locally measured variables, but possesses some operational challenges like optimal Load Sharing (LS), voltage regulation, power regulation, real time source optimization etc. MG integrating different RES combination with suitable energy storage units to meet the electrical energy needs in remote locations It consists of a single voltage source converter and a Bidirectional DC Converter (BDDC) to manage the power flow in self-sustain low voltage MGs. Emergency power and energy management system are essential in ensuring the optimal restoration process and continue the healthy operational amongst available RESs, energy storage system. The proposed strategy makes a LVDC MG a fault-resilient system able survive and perform under all operating conditions
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
