GIS systems and LIDAR technology for the operation of HV lines. Sicilian transmission network applications

Methodologies for the Exploitation of Existing Energy Corridors. GIS Analysis and DTR Applications

“…Figure 10 shows an explanatory example [17][18][19][20][21][22][23][24][25]. On a day of December high current values were recorded on the conductor (about 500 A), but the conductor temperature, measured by the two power donuts, was approximately equal to 16 • C, a value far from the annealing temperature of the mantle conductor aluminum.…”

“…This paper reports the results of the analysis conducted on the Sicilian electrical system for three 150 kV power lines [21,22]. The study followed the following steps: -Selection of the lines under investigation; -Calculation of the maximum allowable temperature of the conductors to respect the distances of the power lines imposed by the legislator (DM 449 of 1988) through the 3D DPM software (DPM 3D Inspection, Visimind AB, Södra långgatan, Solna, SWEDEN); -Calculation of the maximum permissible current on the line, based on the temperature referred to point above, through the mathematical model Schurig and Frick.…”

On the roadmap to supergrid in Sicily: LiDAR technology and HTLS conductors for uprating the 150 kV lines

“…LiDAR technology is described in [13][14]. It is based on scanning the territory, overflown by an airplane, through a laser range finder which measures the distance between the point of emission, represented by the range finder, and the point of reflection corresponding to a generic point belonging to the measured surface struck by the laser.…”

“…Therefore, Terna S.p.A. (Italian TSO) takes advantage of existing overhead transmission lines [4][5][6][7][8][9][10][11][12]. In this work, firstly the maximum temperature that the conductor can reach, in order to respect the maximum imposed sag by law, is calculated, and then the current capacity of some HV power lines [13][14] is evaluated by means of the mathematical model proposed by Schurig and Frick. The software that Terna S.p.A. uses for simulating the GIS environment is called DPM (Data Processing Module) 3D.…”

Maximizing energy transfer and RES integration using dynamic thermal rating

“…The Italian TSO, Terna S.p.A., in last years has started an important grid development plan to improve the RES integration building new lines and new substations to gather and transport the big amount of wind production concentrated in specific areas of South Italy and Main Islands. The construction of new assets means taking economic, political and social problems into consideration; therefore, in the meanwhile Terna has for some years been forced to exploit as much as possible the existing energy corridors using specific measures such as heat resistant conductors installation, DTR Systems, etc… [5][6][7][8][9][10][11][12][13][14][15].…”