The Course deals with the impact of Renewable generation on the planning, operation and control of large power systems. Renewable Energy Sources, in particular, bring some main issues to be considered from the system point of view: uncertainty, variability, large unpredictability of power flows and voltage profiles. From the dynamic point of view, when RES penetration increases, the main consequences on the system are: suitable assessment of reserves, decreasing of inertia, change in local and interarea electromechanical modes and new requirements for PSS tuning, behavior of voltage control, new conditions for emergency condition controls and defense plans. Some new functions, like Synthetic inertia and frequency controls available at some wind and perhaps PV plants are also to be considered.

The Course is divided into small independent modules, given by instructors coming from Transmission Companies, Manufacturers, Academia, Consulting firms and research institutions.

In order to make use of the DigSilent program, every PoliMI participant is required to bring his/her own laptop because a temporary license will be provided specifically.

Program:

Theoretical backgrounds on Power Systems and Transients, main models for dynamic studies: generators, AVRs, governors, wind turbine models, wind parks, PSS.

Strategies to integrate renewable energy into power systems.

Introduction to DigSilent using examples, Creation and maintenance of subnetworks, Creation and  maintenance of libraries. Main issues for time-domain simulation using DigSilent.

Grid code prescriptions about RES generation. ENTSO-E recommendations.

Protections and controls of RES—based generation: protection systems and interactions with the power system.

Stochastic approach for RES management for operational planning and security assessment. Techniques for generation forecast.

Practical issues: planning and operation taking into account inertia decreasing, setting of protection, large perturbations, LVRT characteristics, defense plans and large perturbations.

Written final test t the end of the course.

The course will take place during two consecutive weeks, for a total number of five working days.