1. High Temperature Superconducting (HTS) Cable Project
DOE PROJECT
Frisbie Station & HTS Information Center

2. Definition of High Temperature Superconducting (HTS)
DECO Refrig. Outlet Temp
65 K

3. Current HTS Development Programs

4. Applications and Opportunities for HTS Cables
High Capacity HTS Cable Systems Could Offer New Solutions to Network Design Requirements and System Constraints
Densely Populated Load Centers
Higher transfer capability through existing infrastructure
Non-traditional Generator Siting Practices
Transmission at generator voltages
Non-traditional Distribution System Configurations
Virtual Substation concept, locating transformers at alternate sites
System Upgrades
Transmission Constraint Relief and Circuit Reinforcement
Potential system loss improvement

5. Applications and Opportunities for HTS Cables
HTS Cable Project offers a unique opportunity for Detroit Edison to have an “alpha” test of this emerging technology
Collaborative research with DOE & EPRI results in a reasonable R&D cost for DECo
Project will demonstrate an HTS Cable System on an existing utility network
Frisbie Station mirrors an aged underground distribution infrastructure, so this is an ideal test bed for the demonstration
Determine reliability and performance of the cable system. Development of expertise in installation and maintenance methods for HTS Cable Systems
Joint Pirelli / Detroit Edison System Application Study to define other areas for HTS cables on the DECo system
Strategic R&D opportunity for Detroit Edison

6. copper conductor cables
HTS Project Scope
Replace nine existing cables between a 120/24-kV transformer and the station 24-kV switchgear with three HTS cables rated at 100 MVA
Operate the HTS cable connected to the Detroit Edison system for 2 years.
Three 24-kV HTS cables
KCMIL CABLES
EXPOSE HTS CABLE TO:
SWITCHING SURGES AFFECTS ON CABLE, JOINTS, TERMINATIONS
MAGNETIC FIELDS & HEAT FROM ADJACENT CABLES
ENVIRONMENTAL CONDITIONS (ABOVE & BELOW GRADE)
LONG TERM OPERATION - REFRIGERATION SYSTEM
nine - 24-kV 2250 kmil
copper conductor cables

7. Frisbie Substation Duct Layout
FRISBIE IS A MODEL OF THE DETROIT DOWNTOWN CABLE SYSTEM: SMALL, CROWDED DUCTS AND MANHOLES WITH MANY BENDS IN THE DUCT RUN.
THE ENTIRE PROJECT IS WITHIN THE SUBSTATION FENCE.
THE TRANSFORMER WAS IN ECONOMIC RESERVE. THE CIRCUIT CAN BE DISCONNECTED AS NEEDED.

8. “Detroit” HTS Cable Design
This part of cable is at ambient temperature
Cryostat:
Thermal
insulation (vacuum )
HTS
conductor
ribbons
WARM DIELECTRIC DESIGN
SMALL OVERALL DIAMETER
EASIER TO INSTALL AND SPLICE
MOST VERSITAL
Support
tube
Electrical
insulation
system
Outer jacket
Metallic shield
Liquid N2 Refrigerant
Operates at -200°C

9. HTS Project Status
Cable manufacture completed (Longest single length of HTS conductor in the world.)
Frisbie Station site preparation complete
Available commercially 2005

10. HTS Project Status In progress: Cable & Splice installation
Available commercially 2005
In progress:
Cable & Splice installation
In service Q3, 2001

11. HTS Project Participants
Pirelli Cables & Systems (PC&S): “Cable System provider” (also Team Leader & Project Manager)
Detroit Edison Co (DTE): “Utility End User”, Test Site provider
American Superconductor Corporation (ASC): “HTS Tape provider”
Lotepro Corporation: “Refrigeration System provider”
EPRI (Electrical Power Research Institute): “Utilities Group expertise, systems studies, & Co-Sponsor with DOE”
US Department of Energy: “Program Sponsor”