Cable System Monitor

The authors describe the Cable System Monitor (CSM) which has been designed to provide grid system managers with real-time computation of the load carrying capacity of selected cable circuits on the system. It was recognised that the increased thermal ratings that could be derived from the use of the CSM would defer capital expenditure, reduce generation restrictions or the need for running security plant and allow greater access to the system for construction and maintenance. Previous monitors provided a limited predictive capability. However, these simple representations needed to be developed into a more user friendly facility in terms of manipulating and shaping loading curves. The significant advantage with the new monitor is the ability to retrieve the archived loading history so that similar days can be compared