Sergio Feitoza is the owner of COGNITOR CONSULTING, TECHNOLOGICAL RESEARCH AND TRAINING created in 1996. He applies training and consulting on design, specification and testing of equipment for substations (switchgear, switchboards, busbar systems, busways and others).
He is also expert in the specification, design, construction, operation, management and implantation of testing laboratories of the types: high-power, high voltage, temperature rise, electromagnetic compatibility and equipment for explosive atmospheres Ex.
Sergio Feitoza is an electrical engineer, M.Sc. in Power Systems and Director of Cognitor. He has 40+ years of experience in high power and high voltage testing laboratories (design, construction, operation as test engineer and management), substations equipment design, testing and preparation of IEC standards participating actively in IEC and Cigrè working groups.
All training and consultancy work can be applied in English, Portuguese and Spanish, all over the World.
In the 25 years worked in CEPEL he participated in all the phases of the design, construction, hiring and training of the technical teams, maintenance and operation of the biggest South American testing laboratories in Brazil. He was the manager of CEPEL´s (14) laboratories including high voltage, high power, equipment for explosive atmospheres, materials and calibration.
In 2010 he developed the conceptual project for the implementation of a new set of Brazilian testing laboratories including installations for high power testing (2500 MVA), temperature rise tests (25.000A), high voltage testing, equipment for explosive atmospheres and others. These laboratories, currently in construction, are in Itajubá – MG. From 2012 Sergio is contracted by the owners as consultant for the project ISI-Electrical Systems (SENAI)
ENERGY GENERATION PLANNING
At CEPEL, he also chaired groups in the area of generation and cogeneration with renewable and nonrenewable sources. In these activities he helped, between others in the planning and implantation of national program like PROINFA (wind, biomass, small hydro), PNCE (small hydro), cleaner uses of coal and implantation of the Brazil-Bolivia Gas Duct project. The software DECIDIX for technical economical assessment of energy plants was developed by Sergio.
TESTING SIMULATIONS, DEVELOPMENT OF EQUIPMENT FOR SUBSTATIONS & R&D
In the last 20 years, after leaving CEPEL´s testing laboratories, he acquired a considerable experience in the simulation of high-power tests developing the software SwitchgearDesign and providing consulting services to manufacturers for developing successful products for substations, specially switchgear, controlgear and switchboards.
In the downloads area (below) there are articles explaining SwitchgearDesign methods and validation. Sergio apply trainings for the implantation of the software as a company design tool.
AN IDEA FOR WORLDWIDE USE WHICH WAS POSSIBLE DUE TO THE USE OF SIMULATIONS with SwitchgearDesign
Sergio recently disclosed an idea for worldwide use for the design of a TRIAXIAL high current AIS – GIS. This idea for alternative design to be used in “air insulated switchgear” (AIS) and “gas insulated switchgear” (GIS). Click the button to read about this
I E C – INTERNATIONAL ELECTROTECHNICAL COMMISSION & C I G R È
IEC: At IEC – International Electrotechnical Committee, Sergio was member of IEC working group SC 17 C / WG31: Guidelines for extending the validity of such tests in metal-enclosed switchgear which prepared IEC 62271-307 (2015) - Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV. This is a document applicable to switchgear, switchboards, busbar systems, busways and others.
From 1990 to 1994 he was the Chairman of the Technical Committee 32 (Fuses for High Voltage, Low Voltage and Miniature) of IEC - International Electrotechnical Commission. He coordinated the equivalent committees in the Brazilian Association of Standardization and coordinated the CE-24: 301.04 - Fire Protection Facilities Generation and Transmission of Electricity.
C I G R È activities
CIGRÈ: Sergio was member of CIGRE WG A3.24 on simulation and calculations in substation equipment. Sergio is co-author of the brochure CIGRE 602 / 2014 Tools for the Simulation of The Effects of the Internal Arc in T&D Switchgear. He is the author of the document " Proposal for IEC Guidelines for the use of simulations and calculations to replace some tests specified in international standards" referred in this Brochure.
He is also member of Cigrè Working group WG B3-43 - Contemporary Solutions for Low Cost Substations. Sergio is member of the WG A3.36 Simulations for Temperature Rise Calculation, being the co-author of the Brochure Cigrè 740 (August 2018) - Contemporary Design of Low-Cost Substations In Developing Countries).
He is currently member of the WG A3.36 International -. Application and Benchmark of Multi Physic Simulations and Engineering Tools for Temperature Rise Calculation. A new brochure will be published in 2019.
Workspot - Foz do Iguaçu - Nov. 2018 by WG B3-43
Presentation in Manilla - Philipines - April 2018 - WG B3-43
Training for designers & other teams: more than 200 courses and seminars, open and "in company" all over the World (in English, Spanish, Portuguese).
Some free material for download may be found in this YouTube link:
PUBLICATIONS AND ARTICLES
Read the list and download articles clicking this button:
There are posts in LinkedIn. There is also the forum LINKEDIN entitled "High Power labs & Testing Simulations (internal arc, temperature rise, electrodynamic forces)"
LANGUAGES: English, Spanish, Portuguese and French
MUSIC PRODUCTION ACTIVITIES:
Sergio Feitoza is also a composer, singer and guitar player (classic and popular music). He has 35+ registered songs.