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Cable Historical Operating Temperature Estimator

 White Paper
By Francisco de León, Patrick St-Roch and Christian Beauregard, CYME International T&D

Abstract - The Cable Historical Operating Temperature Estimator (CHOTE) is an innovative way to evaluate the temperature at which underground cable systems have operated during their in-service life. Engineers need answers to the following questions:

  • Which cables have exceeded their normal operating temperature and for how long?
  • Which cables have exceeded their emergency temperature and for how long?
  • Given a predicted load growth: when in the future cables will reach their maximum design temperature.

CHOTE analyzes automatically all the thermal section of a system. This may include transmission and the entire distribution system (manhole-to-manhole). The input to the temperature estimator is the archived loading information usually available through the SCADA/PI. As output CHOTE produces a list of cable sections that have exceeded the normal and/or emergency target temperatures.

This paper was presented at the North American Transmission and Distribution Conference, June 13-15, 2006, Montreal, Canada


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