Software Analysis

Product Description

Siemens optionally offers software analysis (simulation) based on Cigr© studies to examine and conduct preliminarytests of customer-specific applications as a way of determining the optimal,cost-effective solution. With this approach, the customer only needs to equipparticular phases or individual line segments with line surge arresters, andcan still ensure sufficient lightning protection of the overhead line.

In thefirst phase of an analysis, all important parameters of the transmission lineunder study are entered into the simulation software, and the installations to beexamined are selected. This approach takes the following factors into consideration:

• Line parameters: operating voltage, number of three-phase circuits, ground wire data, length, span length and sag on line, conductor type, diameter, and clearances
• Tower data: tower surge impedances and footing resistance, tower geometry (position and distances of the individual phases and any existing ground wires)
• Insulator data: arcing distance, connection length, rated lightning impulse withstand voltage
• Lightning activity: keraunic level (lightning strokes per year and km²), network topology (elevation profile)
• Customer priorities: fewer short interruptions, prevention of phase and multisystem short-circuits, elimination of ground wires