Checking date: 08/09/2020

Course: 2020/2021

Integration of renewables into the grid
Study: Máster in Renewable Energy in Electrical Systems (266)

Coordinating teacher: RODRIGUEZ AMENEDO, JOSE LUIS

Department assigned to the subject: Department of Electrical Engineering

Type: Compulsory
ECTS Credits: 6.0 ECTS


Students are expected to have completed
Students who study this subject must have previous knowledge of electrical systems, electrical machines and control theory
Competences and skills that will be acquired and learning results.
Students who pass the course will be able to: -Students who pass the subject will be able to: - Acquire adequate knowledge of Electrical Engineering and areas that have application here. - To know the technical requirements and the international regulation of connection of the plants of renewable generation in the electrical systems. - Evaluate the impact of renewable generation on the technical operation of the electrical system and know its real contribution to voltage and frequency control. - To assimilate the operating principle and the state-of-the-art technology of wind turbines, photovoltaic solar panels and thermoelectric solar plants in relation to their associated electrical systems. - Know the electronic devices used in flexible AC systems (FACTS) used in the joint operation with renewable sources. - Analyze the behavior of renewable generation plants in the electrical system in the event of severe disturbances (short circuits, voltage gaps) and their contribution to the stability of the system. - To know the general criteria of protection of the plants of renewable energy. - Know the state of the art and modern control techniques to incorporate renewable generation into weak and isolated electrical systems. - To know the peculiarities of the electrical systems associated to the marine wind farms. - Knowledge of the requirements for the integration of renewable energies in the electricity grid and in the electricity markets. (CE10) - Ability to design the integration of renewable energies in electricity networks and markets. (CE11)
Description of contents: programme
1.- Introduction to the integration of renewable energies in electrical systems Grid-connected Voltage Source Converters. Operation and control - Description of the subject - Topologies - Modulation techniques - Operating principles - Phase-locked loop - Vector control - Operating limits 2.- Electrical installations of renewable energy plants - Low-voltage electrical installations - Grounding and protection against indirect contacts - Protection against overloads and over-voltages - Transformation centre - Medium voltage network - Electric substation 3.- Control of variable speed electrical generators - Vector control of asynchronous generators. Doubly fed asynchronous generators - Vector control of synchronous generators. Permanent magnets synchronous generators 4.- Grid Codes. International guidelines and requiremets - Requiremets for generators. ENTSO-E - REE Operational procedure P.O.12.2 5.- Voltage control - Fundamentals - Methods and devices - Compensation of transmission lines - Passive compensation elements - Active compensation elements. SVS - STATCOM 6.- Fault ride trough capability - Voltage dips. Definition and classification - Test devices. Voltage dips generators - Procedure for verification, validation and testing of voltage dips - Response of synchronous generators - Response of fixed speed wind turbines - Response of variable speed wind turbines - Solar inverter response - Voltage dips compensation devices 7.- Frequency control - Speed regulation of synchronous generators - Frequency-power regulation - Participation of renewable generation in frequency stability 8.- Virtual Synchronous Machines - Inertia emulation - Grid-forming operation and control of VSC - Energy managment systems 9.- Grid integration studies I. - Load flow calculations - Accessibility of the renewable generation - Short circuit power - Case study with PSS/E program 10. Grid Integration studies II. - Stability in electrical power systems - Studies of transitory stability. Eligibility criteria - Case study with PSS/E program 11.- Grid integration studies III. - Small signal studies - Models of renewable power plants for grid integration - Case study with PSS/E program 12. Electrical protections - Introduction and basic concepts - Short circuit currents - Behavior of wind turbine technology in short circuits - Protection systems - Impact produced by the penetration of power electronic equipments 13. HVDC transmission systems - Comparison of HVAC and HVDC transmission systems. Pros and cons - HVDC-LCC - HVDC-VSC - HVDC connection links in the Spanish power system. 14. Offshore wind farms - AC and DC topologies - Components and systems
Learning activities and methodology
The teaching method will be lectures and presentation of papers by students classes. The master classes will be taught by professors from the Carlos III University and renowned specialists in the topics covered. The presentation of work by students consists of a public exhibition proposed by the tutor at the beginning of the subject matter.
Assessment System
  • % end-of-term-examination 35
  • % of continuous assessment (assigments, laboratory, practicals...) 65
Basic Bibliography
  • N. Jenkins, R. Allan, P. Crossley, D. Kirschen, G. Strbac. Embedded Generation. The Institution of Electrical Engineering. 2000
  • T. Ackermann (Ed.). Wind Power in Power Systems. Wiley. 2005
Additional Bibliography
  • A.J. Wood, B.F. Wollenberg, G.B. Sheblé. Power Generation, Operation and Control. Wiley. 2014
  • D.S. Kirschen, G. Strbac. Fundamentals of Power System Economics. Wiley. 2004
  • D.S. kirschen, G. Strbac. Fundamentals of Power System Economics. Wiley. 2004
  • I.J. Pérez-Arriaga (Ed.). Regulation of the Power Sector. Springer. 2013
  • S. Stoft. Power System Economics. Designing markets for Electricity. Wiley. 2002

The course syllabus and the academic weekly planning may change due academic events or other reasons.