Mitchell Robinson, PE

• Lead engineer for substation engineering group.
• Learned AutoCAD Electrical on my own and taught other engineers how to use ACADE to optimize engineering processes and streamline workflow.
• Converted all the P&C drawings of our Orange Park substation to ACADE so it could be used as template for others to use for future projects.
• Implemented the first automation scheme that isolates bus faults at Orange Park substation. This automated isolation will save hours of restoration time by no longer needing to wait for a service tech to drive to the substation to open an LBI. This will now be used at other sites across our service territory.

Responsibilities

• Design the protection and control schemes of electric substations.
• Direct substation projects through effective communication, scheduling and planning with teams, groups or individuals.
• Read and interpret Engineering specifications, technical drawings, schematics, and computer-generated reports.
• Fault Analysis: download and review fault event reports. Determine cause of fault and recommended adjustments to protection scheme.

Transformer Upgrades

• Developed wiring diagrams and schematics to connect new power transformers to existing substation control panel.
• Review and interpret manufacturers drawings for completeness and interconnection of transformer with substation protection scheme.
• Correct any missing manufacturer components as needed.
• Determine correct CT ratio of high and low side transformer CT's for use with differential and overcurrent protection schemes.
• Update AC 3 line and one line diagrams.

RTAC Communications Upgrades

• Update comm drawings for replacement of SEL 2032 devices with SEL- 3530 (RTAC) devices.
• Review and update existing P&C schematics and wiring diagrams to match new RTAC architecture.
• Prepare new SCADA status and control points for use in the RTAC Tag processor so all data can flow through RTAC to existing RTU.

Subdivisions and Large Projects

• Designed feeder extension routes, switchgear locations, transformer and secondary cable sizing, voltage drop and flicker calculations.
• Reviewed full set of construction plans provided by developer to aid in electrical design and avoid conflicts with other site utilities.
• Created detailed cross section, plan and profile drawings for permitting road right-of-way crossings .
• Set up and coordinated Pre-Con meetings with development stakeholders to ensure successful build and completion of underground residential designs.

System Planning and Reliability

Engineering Analysis

• Using Milsoft’s WindMil program I evaluated switching requests, feeder load and phase balancing, primary step-down transformer sizing and placement, power factor correcting capacitor placements, feeder backfeed options for planned substation outages.

Solar Interconnection Applications

• Evaluated one-line diagrams, manual disconnects, power inverters, solar panel photos, warning and safety labels, liability insurance for systems greater than 10 kW, reverse transformer loading for systems larger than 10 kW.
• Proposed improvements to solar dashboard to increase efficiency in review process.

Power Quality

• Experience using PMI ProVision software to evaluate voltage and current waveforms.
• Solved common PQ issues: loose neutral, voltage drop and flicker.
• Requested PQ recordings.
• Reviewed and interpreted PQ recordings.
• Recommended corrective actions.

Standards

• Updated transformer fault current tables by performing fault current calculations using IEEE C57 standard percent impedance tables.
• Evaluated and summarized 18kV Elbow Arrester failure report from manufacturer.
• Evaluated aluma form switch mounting brackets for regulator bank case use.
• Reviewed and ordered sample U-guard adapter boots.
• Researched transformer current limiting fuse options for single phase pad mounted transformers.

Road Projects (FDOT and County)

• Submitted RGB and UWS plans to utility coordinator.
• Designed relocation of overhead and underground distribution lines.
• Thoroughly reviewed 30%, 60% and 90% roadway plans to identify utility conflicts.
• Attended utility coordination meetings to discuss scope of work, critical path, utility conflicts.

FPSC and Voltage Conversion Work

• Inspected each pole location for storm hardening.
• Measured ground resistance at each primary pole.
• Checked voltage rating of primary overhead assemblies, ensure all transformers are dual voltage.

RFI (radio frequency interference) Investigations

• Investigated customer complaints related to power line frequency interference.
• Resolved issues interrupting HAM radio operators, cable TV and internet providers.
• Developed step by step RFI investigation procedure and documentation.
• Attended RFI Workshop to learn best practices for solving RFI complaints.
• Gathered product information and pricing to order new RFI equipment.
• Trained department engineers how to use equipment.