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Waddell 230kV Switchyard: Principles of Performance for Repair
Fault Location
Transformer
Bus
230,000 volts
Switches
Agenda Number 6.
2
Electrical Fault
Transformer 7A experienced an electrical fault that caused it to shut down.
The fault was originated with the C-Phase bus.
Electrical Fault
•Extremely dangerous failure •Additional damage may occur
3
Electrical Fault
Normal Operation
Transformer 7B
Transformer 7A
Two pumps on each
transformer
4
After Fault Condition
Transformer 7B
Transformer 7A
Four pumps on one
transformer
Principles of Performance in Project
Manage Assets to ensure system reliability
Build relationships among work groups: Internal Leadership
Involve all departments upfront: Improved Project Development
Achieve environmental excellence
5
Multiple Groups Involved in Repair
Project Management
Waddell
Maintenance Engineering
Mechanical Maintenance
Purchasing
Safety
Environmental
Machine Shop
Engineering Resources
Warehouse
Planning
CAP and Global companies:MEPPI and CGIT
CAP
MEPPI
CGIT
6
Sole Sources: MEPPI and CGIT
CGIT Compressed Gas
Insulated Transmission
MEPPI Mitsubishi Electric
Power Products Inc
Existing Conditions
Transformer
BusSwitches
Surge Arrestors
7
Schedule
Team PlanningJanuary
2011
Award Contracts May 2011
Phase 1 June 2011
Phase 2March 2012
World Events during Planning
Team PlanningJan 2011
Major Earthquake,
Tsunami, and Nuclear Crisis in
Japan March 2011
Award Contracts May 2011
Phase 1 June 2011
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Phase 1: Repair of Surge Arrestors
Repair
Phase 2:Refurbished Surge Arrestors
9
Phase 2: C Phase Bus
Phase 2: Install
10
Phase 2: Working among the new switches
Phase 2: Flange Cleaning and Desiccant Replacement
11
Phase 2:Preparing the Transformer for Test Conditions
Hi Pot Test Equipment
12
Test Equipment connected to Substation
Teamwork for CAP’s Improved Reliability
Recommended