© May 2020 | IJIRT | Volume 6 Issue 12 | ISSN: 2349-6002 IJIRT 149384 INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH IN TECHNOLOGY 173 ADMS: The Substratum of Modern Age Power Distribution Swapnil A. Namekar 1 , Aditya T. Singh 2 1 Assistant Professor, Department of Electrical Engineering, Bharati Vidyapeeth Deemed University, College of Engineering, Pune, India 2 Student, Department of Electrical Engineering, Bharati Vidyapeeth Deemed University, College of Engineering, Pune, India Abstract- High perforation of distributed energy resources and the progressively dynamic nature of distribution systems brings up many new challenges for the distribution system operators today. To handle and manage these remarkably huge changes, they need to take an active role in managing their systems and adapt to varying conditions in real time. Only a all-inclusive set of dedicated software tools combined into a robust solution can handle these challenges and guarantee a smooth transition from conventional, paper-driven processes to a digital and adaptive way of managing grids in real-time. These abilities are now offered by an Advanced Distribution Management System (ADMS). INTRODUCTION From a conventional electric distribution system to renewables and electric vehicles, the conventional way of generating electricity and supplying it to end- customers was straightforward. The electricity was produced in bulk in large power plants, transmitted through HV lines to the supply stations, and then through distribution lines, distributed to consumers. Power-flow at the distribution system level was in a top-down, one-way direction with voltage dropping along the feeders as a result of natural energy losses. Old-style voltage regulating devices (voltage regulators, capacitor banks, etc.) were advantageously located at predefined positions and helped maintain voltage inside regulatory limits. Protection equipment was conventionally located at predefined critical locations and set to react on unidirectional fault currents (from the supply station to the fault location). Distribution protection, control, and metering were controlled by electromechanical devices, and almost zero automation existed at the conventional distribution system level. Subsequently, Distribution Network Operators (DNOs) at that time could control their grids manually, applying conventional paper-driven processes. PRESENT SCENARIO Nowadays, a massive paradigm shift is shaking conventional distribution systems operations: rapidly escalating utilization of Distributed Energy Resources (DER). The proliferation of DER use is being propelled by low-carbon initiatives announced around the world, greenhouse gas emissions from coal power plants & gas-fueled vehicles, the plummeting cost of DER such as solar photovoltaic (PV), wind energy storage (WES) and electric vehicles (EV). As the output from renewable DER are variable by nature, and time & location of electric vehicle charging is challenging to predict, these new resources present a high level of uncertainty and variability into the operation of distribution networks. Optimal coordination of these novel resources ensuring dependable grid integration and operation is still in its early stages. But the modern initiatives in grid automation and modernization applied by the combination of remotely controlled regulation, protection and metering devices, provide better situational awareness with the capability to monitor and control an increasing number of interconnected distribution grid assets. However, to defer the cost of retrofitting distribution circuits, they are being loaded more severely, nearer to their limits. This additionally complicates conventional switching procedures, as operators can no longer rely on having unused capacity on adjacent circuits for carrying out load transfers that help satisfy various operating objectives. Finally, outages triggered by some of the