Wiley|Wilson has completed many medium voltage power distribution upgrades and new systems for university campuses and industrial facilities. We are continuing to receive additional arc flash studies based on our quick response and ability to meet schedules.
Project Examples Follow:
4.16 kV System: Industrial Power System Expansion
Developed conceptual design for a major expansion to the Griffin Pipe - Lynchburg Plant electrical distribution system, including replacement of the plant’s 4.16 kV service switchgear and the addition of two 3.0/3.75 MVA unit substations. Based on the conceptual design, developed bid specifications for major equipment and advised plant personnel during the selection process. Estimated project costs for the electrical expansion.
12.47 kV System: Campus Power Substation & Utility Grid Connection
Pennsylvania State University needed a 12.47 kV substation for the East Campus Power Plant. A dual-bus arrangement 15-kV switchgear and automatic bus-tie switching were selected with allowance for power plant and campus expansions. System protection included feeder breakers instantaneous/time overcurrent, reverse power flow, phase sequence, over/under voltage and bus differential with breaker synchronization checking. System monitoring/control are done by the campus DCS.
13.2 kV System: Campus Power System Voltage Conversion
American University (DC) has the long-term goal to switch from 4.16 kV to 13.2 kV based on an Electrical Master Plan developed by Wiley|Wilson. During a recent construction phase, ten medium voltage feeders and five distribution transformers were upgraded using two 13.2-kV circuits in a primary-selective arrangement. The transformer installation included 15-kV class SF6-insulated sectionalizing switches and associated cable, ductbank, manholes and service entrances.
13.8 kV System: Campus Power System Rebuild
To reduce campus-wide power outages at Prince George Community College (MD), Wiley|Wilson worked with the local utility to install a second connection and designed a dual bus system for automatic switching to either utility feed. A primary-selective distribution system was selected with automated sectionalizing switches. The new 13.8-kV switchgear was installed with overcurrent protection for utility/campus feeders, reverse power flow protection, phase sequence protection and over/under voltage protection.
Power Systems Studies: Medical Center Power System Studies
Power system studies were performed nationwide for 4MM SF of (US Department of Veterans Affairs) Medical Centers. The studies included equipment condition assessment, NEC compliance, short circuit calculations, load flow and voltage drop analysis, arc flash hazard analysis, and a selective coordination study. Additional power system studies have been requested by the Department based on this successful project performance.
Arc Flash Hazard Analysis: Industrial Power Distribution
Provided an Arc Flash Hazard Analysis for the Tri Tech Labs Lynchburg plant, which included field work to obtain existing system information, construction of electrical system models using SKM Power*Tools software, calculation of the incident energy levels at all electrical equipment locations throughout the plant, recommendations for PPE levels at same locations, and a written report summarizing the results. Arc flash labels were printed and affixed to equipment throughout the plant.