Plataforma de proteção, automação e controle de sistemas elétricos com IEDS físicos e virtuais padrão IEC 61850 orientada à aprendizagem baseada em projetos

Abstract

The technological advance of the Electric Power Systems (SE) has featured significant improvements in the reliability of the Protection, Automation and Control (PAC) systems of the Electric Power Systems (SEP). The publication of the IEC 61859 standard and its updates have promoted positive impacts on communication between devices of the hierarchical levels of substations PAC systems and significant benefits such as standardization protocols, interoperability, lower cost of integration, lower cost of installation and maintenance. IEC 61850 opened up the way for the implementation of Digital SEs, which essentially consist of intelligent electronic devices (IEDs) that operate on modern network technologies with digital communication. Virtual IEDs technology can be used in Digital SEs. The virtualized model of logical devices, logical nodes, Abstract Communication Service Interface (ACSI) and Common Data Classes (CDCs) allows the definition of the data, services and behavior of the devices that are defined, in addition to the protocols used to define how the data is transmitted over the network. As these new technologies and the standardization of communication protocols are developed, it is necessary that protection of SEP professionals are trained to keep up with technological evolution. Within this context, this dissertation presents a platform for learning digital electrical protection, automation and control of substations and smart grids. The purpose of the platform is to offer a practical environment that facilitates learning and fosters analytical skills, critical thinking and self-confidence in the field of PAC. The platform basically consists of physical IEDs and virtual IEDs (VIED) interconnected in a communication network. The concept, development, testing and validation of VIEDs are presented and applications are made in situations of logic selectivity, with and without breaker failure, and use of the transformer differential protection function, with a view to training of qualified personnel in the state-of-the-art in the protection of electrical systems. The VIED validation consisted of showing that the virtual device communicates through Manufecturing Message Specification (MMS), Generic Object Oriented Substation Event (GOOSE) and Sampled Values (SV) messages and that it behaves similarly to the physical IED that is part of the platform. In addition, integration tests were performed between the VIED and the physical IED to a Supervisory Control And Data Acquisition (SCADA). Therefore, it was demonstrated the contribution of the virtual IED for application in teaching, research and innovation laboratories and in future substations, and the great value of the PAC platform in the training and retraining of qualified professionals.