The calculation and optimal allocation of transmission capacity in
natural gas networks with MINLP models
Abstract
The transmission capacity of gas pipeline networks should be calculated
and allocated to deal with the capacity booking with shippers. Technical
capacities, which depend on the gas flow distribution at routes or
interchange points, are calculated with a multiobjective optimization
model and form a Pareto solution set in the entry/exit or point-to-point
regime. Then, the commercial capacities, which can be directly applied
in capacity booking, are calculated with single-objective optimization
models that are transformed from the above multiobjective model based on
three allocation rules and the demand of shippers. Next, peak-shaving
capacities, which are daily oversupply or overdelivery amounts at inlets
or deliveries, are calculated with two-stage transient optimization
models. Considering the hydraulic process of a pipeline network and
operating schemes of compressor stations, all the above models are
mixed-integer nonlinear programming problems (MINLPs). Finally, a case
study is made to demonstrate the ability of the models.