– Tuesday Sept. 19, 2017 8:00-11:30:
“State Estimation in Smart Grids”
Antonio Gomez-Exposito, Univ. Seville, Spain
Real-time control and operation of power systems rely on an accurate knowledge of the current system state. For decades, state estimators have been around playing satisfactorily this role, but the all-smart upcoming era is posing new challenges, of which perhaps the most important is the boom of information provided by ubiquitous digital measurement devices, spread across all subsystems, such as synchrophasors, intelligent electronic devices and smart meters. The natural solution to face such challenges is to resort to a hierarchical architecture spanning from distribution feeders to giant interconnected multinational systems. This tutorial will review recent progress in state estimation, from multi-area transmission systems down to medium voltage distribution systems.
- State estimation basics
- Handling measurements
- Parameters and topology errors
- Hierarchical state estimation
- Multiarea, substation and distribution system state estimation.
– Tuesday Sept. 19, 2017 12:00-15:30:
Rodrigo Palma, Univ. Chile, Santiago, and Claudio Canizares, Univ. Waterloo, Canada:
Isolated microgrids have been for decades the prevalent systems supplying electricity to customers in remote and island communities. More recently, these local grids are being considered for and deployed at many grid-connected locations, such as industrial plants, buildings and institutional campuses, and are rapidly becoming an integral part of power networks, since these networks facilitate the integration of distributed generation, particularly renewable resources, and increase system reliability and resiliency. Therefore, there is significant interest in the power and energy community in the development and utilization of these grids.
This tutorial will provide a complete overview of microgrids, from basic definitions, and components, to their design, operation, control and applications. Recognized experts will first discuss the characteristics and main components of various types of microgrids, as well as the motivations and objectives for their deployment. Various aspects of microgrid planning, including location and sizing, will also be presented, followed by detailed discussions of operational and control aspects, in particular energy management systems for active and reactive power dispatch, as well as various aspects of voltage and frequency stability and control. Finally, several actual examples of deployments and applications of isolated and grid connected microgrids will be reviewed, with particular emphasis on grid interactions.
- Microgrids definitions and overview
- Energy management
- Voltage and frequency control
– Tuesday Sept. 19 16:00-19:30:
“Smart Grid Simulations”
Federico Milano, Univ. College Dublin, Ireland, and Jaime Cepeda, CENACE, Ecuador
Traditionally, the stability analysis of power systems has been based on approximated deterministic models whose dynamic behavior is dominated by synchronous machines and their controllers. However, in recent years, the increasing penetration of renewable energy resources, the ubiquitous presence of communication systems and power electronics and, in one word, the transition from traditional power systems to the “smart grid” concept, have encouraged researchers and practitioners to rethink the modeling and simulation of modern electric networks. This tutorial will discuss the key aspects of modeling and computer programming that can enable the analysis of the smart grid. With this aim, a live demonstration of a software tool, called “Dome”, developed by Federico Milano and his research team, will be provided. The demonstration will show how to extend a traditional power system analysis tool to integrate smart grid features. In this same context, some smart grid functionalities can be also implemented in commercial software in order to perform advanced simulations. For instance, PowerFactory allows users to implement specialized smart grid devices (such as FACTS or Wind Turbines or Wind Farms) or to perform advanced smart grid analysis (such as heuristic optimization tasks or hybrid stability assessment methods) via the DSL or DPL languages. Therefore, this tutorial will also address a general description of this advanced functionalities that could help performing smart grid applications.
- Presentation of smart grid modeling and simulation concepts
- Demonstration of the features of the software tool “Dome”
- Presentation of the DSL and DPL environment in PowerFactory
- Heuristic optimization implemented in DPL for solving dynamic optimization problems
- Hybrid transient stability assessment via DPL
- Implementation of FACTS and Wind Farms via DSL