| | |
| ||
| | |
|
|
Products At Work: TDM Case Study The following internal analysis was received from a major western utility company. The company has to date installed temperature differential monitoring on 15% of operating LTC's. The analysis covers the 6-month time period from 1/1/97 through 6/30/97. The vast majority of LTC troubles were identified as shown with TDM system technology. Ignoring the worst case scenario where a rewind would be required, the material and labor cost savings are still significant. The customer outage information reflects a 4.5% reduction for the six-month time period. Projecting this percentage to include a TDM installation on all LTC's results in an annual outage reduction of 29.97%. TRANSFORMER SAVES Below is a list of transformers that were removed from service before they failed. Problems were detected by infrared, TDM's, and DGA tests. If left in service, at a minimum, customer outages would have occurred for each failure. Worst case scenario would include a total transformer rewind. On average for a typical 45MVA transformer winding failure, the total costs incurred would be approximately $500K. These costs would include removal and installation of the transformer. 1997: 1. Substation #1 TDM 2. Substation #2 TDM 3. Substation #3 TDM 4. Substation #4 TDM 5. Substation #5 Infrared Inspection 6. Substation #7 TDM 7. Substation #8 TDM 8. Substation #9 TDM/DGA OUTAGE INFORMATION Total Customers = 28,069 customersSystem Average Restoration Time = 105 minutes Estimated Customer Minutes Saved = 2,947,245 Customers in System = 4,756,717 AIDI Saved = 0.62 minutes = 4.5 % 1997 YTD AIDI = 13.11 minutes Potential AIDI W/O AIDI Saved = 13.73 minutes Barrington Consultants, Inc. © 1999-2023 Barrington Consultants, Inc. |
![[ Home Page ]](navhome.gif){kind=small}
![[ Company Background ]](navcompany.gif){kind=small}
![[ Product Directory ]](navproducts.gif){kind=small}
![[ Request Information ]](navreqinfo.gif){kind=small}