This paper addresses DC microgrid stability by deploying a PV system with integrated energy storage. The integrated energy storage contains battery and supercapacitors for which the battery satisfies the normal load requirement and supercapacitor to fulfill the requirement of a transient load by saving battery life from unwanted charging and discharging cycles. In the conventional design method, a supercapacitor is observed only at the rated voltage. Generally, the supercapacitor voltage decreases because of self-discharge and it is observed that the typical controller design strategy will make microgrid unstable at low supercapacitor voltage. Proposed system is working on a low voltage of supercapacitors and observes the stability of DC microgrid under this condition. Also, this system works in all the designed operating modes. So, the complete performance of microgrids is investigated and adequate system operating conditions with stability are verified. Finally, the structure is verified through simulation and test results.

Innovative Architecture and Stability Assessment of DC microgrid with Integrated Energy Storage

This paper mainly focuses on economic power management of a grid interactive microgrid with BESS. The declining battery price at a rapid rate has laid a milestone for this paper. The colocating solar generation with BESS is a concept garnering much attention lately. This paper highlights how batteries can be cast-off for demand-charge management thereby contributing to savings in electricity bills. In this context, a generalized rule-based EPMA is proposed, which is capable of making decisions considering all the conditions that prevail throughout the year. For instance, at the time of non-conventional load hours like peak load hours, monsoons, power blackouts. Furthermore, the algorithm ensures sustained power supply for the critical industrial load by retaining battery Soc’s within limits. Hence, we can extract maximum advantages from BESS, which in turn helps power customers to reduce their electricity bills and increase their incentives.

Alekhya Muvvala

Papers

Economic Power Management With BESS