Short summary of methodology for calculation of Technical Capacity

24.2.1.3 Methodology for determination of maximum technical capacity

Maximum technical transmission capacity is the capacity, which is physically available for transmission of natural gas at analyzed entry or exit point. The definition of maximum technical capacity shall take into account the technical capacities of all components of the gas pipeline network involved in the transmission, the configuration and operational characteristics of the gas pipeline network as a whole and its operational boundary conditions.

Analyses of transmission capacities of the gas pipeline network among components of the gas pipeline network, in addition to transmission gas pipelines and accessories, also specifically examine the measurement-control stations and compressor stations.

The technical capacities of the measurement-control stations are defined on the basis of characteristics of used flow-pressure controllers, measuring equipment, accessories, pipelines, heat exchangers, filters, separators and installed heating power of heating devices.

Technical capacities of compressor station depend particularly on the flow-pressure characteristics of gas compressors and operational characteristics of power gas turbines.

For analyses of transmission capacities GASTRANS d.o.o. uses software package Simone (within the “SCADA” system). With the aid of these tools, we also carry out recalculations for preparation of works on gas pipelines and analyses of operational states and transients in the transmission of natural gas.

The model of a gas pipeline network is used also for dynamic simulation of gas pipeline network in real time with software package Simone, which is continually operating in the Dispatch centre connected to the data from the ”SCADA’’ system. In addition to useable results of the simulation in real time, the ”SCADA’’ system may, based on the current state of the gas pipeline network, also predict its future behaviour depending on the forecasted load and nominated natural gas transmissions, and alarm the operators in case of detection of irregular operational states.

Gastrans d.o.o Novi Sad