September – DER Grid Integration, Part 2

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Written by Subir Majumder and Anurag K. Srivastava

Despite the push from local and federal governmental organizations toward the adoption of clean-energy technological solutions, electric utilities are still slow to integrate DERs. Challenges are mainly driven by the need to quantify all the potential DER values, invisible DER behind the meters, identifying incentive streams, and near-zero marginal cost of renewables.

Written by Alok Kumar Bharati and Venkataramana Ajjarapu

The electric power grid started out as a small independent system that had a single generator supplying a fixed amount of load restricted to a geographic area [1]. Eventually, this system grew and continues to grow even today often referred to as the largest man-made machine that spans large geographic regions often spanning continents.

Written by Mohamed Izdin Hlal, Vigna  K. Ramachandaramurthya, and Ahmed Altaher

In light of the volatile nature of the most prominent of the renewable energy resources, hybrid energy systems have been considered as a paradigm to resolve such concerns. Hybrid energy systems have been deployed in several places across the world mainly as the source of energy for remote communities. In this sense, there exist some limited applications of hybrid energy systems, but a standardized manner to plan and operate such portfolios of resources is still the focus of much research.

Written by Tripti Gangwar, Narayana Prasad Padhy, and Premalata Jena

The key objective of the smart grids is to develop affordable and reliable future grids powered by decentralized renewable electricity systems, thereby reducing fossil fuel consumption in the near future. The two key renewable sources in India are wind and solar, contributing 54% and 26% to the overall renewable generation. India, the second most populated country in the world and with a high solar insolation, is an ideal combination for rooftop solar installations. The solar installations are predicted to increase exponentially in the upcoming years to achieve the renewable target of 175GW set by the Government of India by the end of 2022, which includes 100GW of solar power. Currently, 114 GW installation is complete, including 57 GW of solar energy. However, the increased solar installations of low or medium power capacity are associated with prominent issues in the distribution network, such as voltage fluctuations, an unintended trip of solar inverters, and limited utilization of renewable energy during power outages. Additional problems might occur during large-scale renewable integration, such as peak energy deficit, reverse power flow, system instability, etc. To overcome the mentioned objectives, the article describes the integration of battery energy storage system (BESS) in a distributed manner at different locations of the distribution system.

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