Resilient-Economic Coordinated Robust Operation of Integrated Electric-Gas Systems

TL;DR

This paper develops a resilient and economically coordinated robust operation framework for integrated electric-gas systems, considering their physical and economic interactions, to improve system flexibility and reduce operational costs under uncertainties.

Contribution

It introduces a novel robust scheduling framework for integrated electric-gas systems that accounts for bilateral contracts and operational constraints, addressing limitations of previous models.

Findings

Enhanced system resilience under uncertainties.

Improved economic efficiency in integrated operations.

Compatibility with existing industrial practices.

Abstract

Interactions between power and gas systems, which are both large and complex, have been gradually intensified during the last decades, predominantly due to the propagation of large fleet natural gas-fired power units (GPUs) and the technological developments of power-to-gas (P2G) facilities. These interactions not only bring significant economic benefits to society but also provide additional operating flexibilities, which are essential to handle fluctuations of the large-scale renewable power generation (RPG) and power system contingencies. Moreover, neglecting these interactions in power system operation may not only result in infeasible operation status in the gas systems but also increase the decision-making operation costs of both systems. previous studies suffered from two significant drawbacks, namely (1) they assumed the existence of only one utility that has full control authority over the power system and gas system; (2) the economic interactions between power systems and gas systems have been neglected, which goes against the current industrial practice. This research revisits the day-ahead resilient and economic operations of power systems considering the economic and physical interactions with gas systems, which are characterized by the modeling of bilateral energy purchase contracts and operational constraints of gas systems. This thesis provides a novel perspective and solution for the resilient and economically coordinated robust operation of integrated electric-gas systems (IEGSs) under uncertainties. The proposed robust scheduling decision frameworks are practically compatible with the existing industrial operations of the IEGSs.