This document summarizes completed and ongoing projects for an electrical engineering intern. It describes a cable life study project that found a relay failure caused cable overloading. It lists learnings around safety, teamwork, and engineering skills. Ongoing projects include mapping substation risks, analyzing a combined heat and power system schedule and costs, and updating an energy flow model. Brief profiles of the intern and their supervisor are also provided.

1. Completed Projects
 Cable Life Study
Relay does not provide enough protection for the
transformer and cause terminal cables to overload
Cable’s life drops to 2.7 years from 40 years because of
overloading
Safety tip: TRACK card and be aware of hazards
Solutions: Shift devices to other line
Keep temperature traced till find long-term solution
Learnings from work:
Situational safety awareness
Team collaborations reinforced
Interpersonal and communication skills
Real-world experience with transformer and
breaker testing
One-line Diagrams for power transmission
and substations
SKMTools (Arc Flash)
AutoCAD
Thermodynamics (Energy)
On-going Project:
Develop visual risk ID of inspected substations
onTopographical map
CHP operation schedule and economic
analysis
Plant energy flow and cost model update
Identify and label overhead transmission lines
More research on cable overloading
Substation Score
UPP Substation 8.43776
North Main Switchyard 8.41877
Smelter Substation 8.40989
Copperton Substation 8.36902
Magna/PacifiCorp 8.31334
Refinery Substation 8.07266
6190 Switchyard 6.87315
Arthur Switchrack 5.39835
No.2 Substation 4.94158
South Main Substation 6.67596
About Me
 Master Student in Electrical Engineering at Case
Western Reserve University , Cleveland Ohio
 Graduate in May 2016
 Interested in Energy Optimization, Control
Systems and Automation
Utility Air
Ambient Air
Drain Water
Natural Gas
(from Questar)
Pulsing Timer Pulsing Timer
Air Filter
Evaprorative
Cooler
Gas Turbine & Generator Diverter Valve
Gas
Compressor
Oil Cooler
ATM
Combustion
Air Blower
Boiler
Steam
Feed Water
ATM
Condensate
Blowdown
Power
Gas Compressor
Silencer
Ambient Air
Duct
Burner
Feed Water
Xuan Wang—Electrical Engineer Intern
Energy System Optimization
Supervisor: DavidVan Hees
Optimization of Combined Heat
and Power (CHP) Operation
 Substation Inspections
Inspected Arthur Switchrack, No.2 Substation, and South
Main Substation, scheduled for Arthur Substation
Visual inspections on transformers, breakers, and control
buildings
SafetyTip: TRACK every inspection
Watch for warnings and signage
Keep accompanied
Wear PPE
Step 1
Compare the operational cost of CHP
with old Boilers
When generating the same amount of steam,
the CHP costs half as much as running the old
boiler
Break-even point:
When natural gas price is $ 13.4/mmBTU, Boiler
and CHP will have same operation cost.
Step 3
Create an energy flow model that
determines the energy input and output
of the Combined Heat and Process
system
PI data:
 Natural gas flow rate in SCFM and
temperature in °F
 Water flow rate in GPM and temperature in °
F
 Steam flow rate in LB/H, pressure in PSIG and
temperature in °F
Properties:
 Heat values of natural gas
 Water quality and properties
 Power generation
Work out the economic value of
running CHP and determine its
operational schedule
Step 2
Find out the most cost efficient way to
operate the CHP
Under the condition of fixed electricity and nat-
ural gas price , we can operate CHP for our en-
tire steam or power demand
Red — 44KV Transmission Lines
Purple — RMP Transmission Lines
Yellow — Lower Voltage Transmission Lines
Assumptions
 CHP and Boiler generation (power and
steam) meet plant demands
 Steam is a saturated
 Electricity import costs and natural gas price
are at $46/MWH and 2.18/mmBTU
Combine Heat Power Process Flow Diagram
CHP Generation
CHP & Boiler Steam Generation
Team members:
Hana Baesmat, BlakeWilde,
PerWenstad, Luke Kooyman,
Becca Novy