Title :
A cost effective solution for increasing ratings on underground transmission cables-a case study
Author :
Walldorf, Steven P. ; Ernst, A. ; Pancholi, Sunil
Author_Institution :
USi, Armonk, NY, USA
Abstract :
The capacity of four parallel 69 kV pipe type cable circuits was evaluated based on measurement of load and temperature data and thermal modelling. Summer normal and emergency ratings were lower than required. The alternatives considered to achieve the rating increase are discussed. Increasing the usable capacity by implementation of a dynamic real-time rating system was recommended. The dynamic rating system, installed in 1997, has provided improved ratings which so far has deferred or possibly eliminated the need for circulation equipment
Keywords :
computerised monitoring; power cable testing; underground cables; underground transmission systems; 69 kV; case study; dynamic real-time rating system; pipe-type power cable capacity; ratings improvement; summer emergency ratings; summer normal ratings; underground transmission cables; Adders; Circuits; Computer aided software engineering; Conductors; Costs; Fluid dynamics; Strontium; Temperature; Thermal loading; Underground power cables;
Conference_Titel :
Transmission and Distribution Conference, 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5515-6
DOI :
10.1109/TDC.1999.755310
