Rey Arnaiz
Toledo City
Summary
Electrical Engineer with over 20 years of experience in demand forecasting, Gas-insulated Switchgear (GIS) installation, and electric distribution utility maintenance and operations. Proven expertise in optimizing system performance and managing complex operations within the electrical industry. Strong problem-solving skills and a commitment to continuous improvement and innovation.
Overview
20
20
years of professional experience
1
1
Certification
Work History
Demand Forecast Sr. Engineer
Magayeece Consulting House for Engineering
06.2016 - Current
- Develop a 25-year Peak Demand & Energy Global Forecast for the Saudi Electricity Company covering the kingdom, operating areas, and cities.
- Maintain and update the database information on actual data ( hourly demand, econometric, demographic, etc.) from internal and external entities.
- Analyze historical data on load and energy consumption and thoroughly document the findings.
- Conduct load studies to analyze factors influencing demand growth, such as bulk loads, GDP, population, weather (temperature, CDD&HDD, humidity), events, electricity tariffs, and government policies.
- Use regression analysis and time series models to create appropriate forecasting models for each required system and sub-systems.
- Utilize SAS Energy Forecast Software for input data management and as a tool for developing forecasts.
- Integrate Distribution and HV Substation Forecasts in creating the Bottom-up forecast for cities.
- Develop a DSM Scenario that strategically addresses peak demand reduction through various demand response and efficiency programs.
- Develop a KSA Peak demand & Energy forecast to be submitted to GCCIA annually for its Installed Capacity Obligation study.
- Prepare the demand forecast sections of the Transmission Capacity Statement of Saudi Electricity Company.
- Review studies from consultants that involve demand and energy forecasts of KSA, its operating areas, and sub-systems.
Gas Insulated Switchgear Service Engineer
Dar Al Riyadh
02.2014 - 03.2016
- Supervises the Erection, Installation, Maintenance, and Operation of HYUNDAI Gas Insulated Switchgears (380kV, 132kV,115kV) on various substations of Saudi Electricity Company.
- Vacuuming of GIS Compartments, SF6 Gas Recovery, and Gas Filling of HYUNDAI380kV/132kV/115kV GIS compartments using DILO Service Cart.
- Assembly and Installation of HYUNDAI 115kV, 132kV and 145kV GIS Equipment which includes Circuit Breakers, Earthing Switch/Disconnect Switches, CT’s, VT’s, GIB’s, Lightning Arresters, Cable Heads, CTPU’s, LCP’s, Partial Discharge Monitoring System, DataAcquisition System Panel, other related accessories.
- Conducts necessary Tests and Measurement such as Gas Purity and Dew point Analysis, Gas Leakage Test, Contact Resistance Measurement and High Voltage Test on GIS equipment.
Assistant Engineering Manager
Cebu III Electric Cooperative, Inc.
03.2009 - 01.2014
- Oversees the Design, Budget, Scheduling, and construction of various electrical projects (Sub-transmission, Substation and Distribution),
- Directs Supervision of the Economic Purchase of Power by trading through the Wholesale Electricity Spot Market or sourcing from an Independent Power Producer.
- Manage the Optimum demand loading of On-grid substations for Economic Purchase of Power Supply
- Oversees the operation and maintenance of the Automated Mapping Facilities of the Utility.
- Manage and approve the appropriate settings of the protective devices such as circuit breakers, reclosers & relays.
- Manage and approve the program and parameter settings of GEkV2c and EDMI KWh Meters
Technical Staff Engineer
Cebu III Electric Cooperative, Inc.
08.2006 - 02.2009
- Developed Forecasting Models to predict the Future Growth Demand of the different types
of electric consumers. - Analyze the capacity requirement of substations, lines, and distribution transformers and determine the year in which the loading criteria are violated.
- Asses the short circuit duties of the protective devices against maximum faults and their adequacy to sense minimum faults.
- Perform load flow to assess the feeders' power quality, voltage profile, under/over voltage, and voltage imbalance.
- Calculate the reliability of the sub-transmission and distribution system.
- Calculate and analyze the segregated system losses for the base year and forecasted years of the distribution system.
- Develop and propose Capital Expenditure Projects to address problems and deficiencies of the distribution system.
Area Engineer
Cebu III Electric Cooperative, Inc.
01.2005 - 07.2006
- Supervises the Installation, maintenance, and Operation of power circuit breakers and reclosers from 13.2kV to 69 kV
- Supervises the Installation, maintenance and Operation of distribution transformers
- Conducts Testing and Commissioning on various Substation and Distribution Electrical Equipment (Insulation Resistance Test, Transformer Turns Ratio, Winding/Contact Resistance, Hi-Pot Testing, Insulation Power Factor test, Earth Resistance Test, CT and PT test using Omicron CT Analyzer
- Perform Transformer Banking and Metering (Single Phase, V phase, Three Phase)
- Supervises the Distribution Line Maintenance and Operation, ensuring Reliability and Quality of Power to
electric consumers,
Education
Master of Engineering - Electrical Engineering
Mapua University
Manila, Philippines10.2024
Bachelor of Science - Electrical Engineering
Cebu Institute of Technology
Cebu City, Philippines03.2004
Skills
- Load Forecasting
- Power System Modelling and Analysis
Certification
Industry Expert in Power System Modelling & Analysis
Timeline
Demand Forecast Sr. Engineer
Magayeece Consulting House for Engineering
06.2016 - Current
Gas Insulated Switchgear Service Engineer
Dar Al Riyadh
02.2014 - 03.2016
Assistant Engineering Manager
Cebu III Electric Cooperative, Inc.
03.2009 - 01.2014
Technical Staff Engineer
Cebu III Electric Cooperative, Inc.
08.2006 - 02.2009
Area Engineer
Cebu III Electric Cooperative, Inc.
01.2005 - 07.2006
Master of Engineering - Electrical Engineering
Mapua University
Bachelor of Science - Electrical Engineering
Cebu Institute of Technology
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