Errors in the Model Formulation of 'Impact of a Large Penetration of Wind Generation on the GB Gas Network', Energy Policy 38 (2010) 5684–5695, DOI: 10.1016/j.enpol.2010.05.016

Abstract

This manuscript addresses the scientific errors of the gas model of the paper by Qadrdan et al. entitled “Impact of a large penetration of wind generation on the GB gas network” on Energy Policy 38 (2010) 5684–5695. The gas network model formulation of the original paper does not obey the mass and momentum equations for the (successive) steady-state or unsteady-state conditions. To illustrate the scientific flaws of the gas model of the original paper, a gas pipe with a time-varying demand profile and a fixed inlet pressure was used to find the outlet pressure, gas intake, change of linepack, and flow imbalance by three methods: 1) the proposed model of the original paper for successive steady-state conditions (Method 1), 2) PipelineStudio successive steady-state (Method 2), and 3) PipelineStudio unsteady-state (Method 3). There are large deviations between the results obtained from the original paper (Method 1) and the ones from the PipelineStudio gas simulator (Method 2 and 3).