Incorporating hydraulic transients into short-term operation evaluation of an integrated electricity–water system

Abstract

Hydraulic transients occur frequently due to flow control operations in a hydraulic system, which may lead to adverse impacts on the system equipment. However, the existing researches on the power–water flow problem of the integrated electricity–water system (IEWS) are mainly based on steady-state hydraulic models, and few efforts have been spent investigating the effect of hydraulic transients on the IEWS. This paper incorporates the hydraulic transients of water distribution systems (WDSs) into the power–water flow analysis of the IEWS and proposes an extended-period quasi-steady-state IEWS model to evaluate the short-term operation of the system. The proposed model is theoretically analyzed and numerically validated based on a single-pipe WDS and a test IEWS composed of the IEEE-13 power distribution system and a 5-node WDS.

Keywords

• Integrated electricity–water system (IEWS)
• Quasi-steady-state model
• Method of characteristics (MOC)
• Hydraulic transients
• Power flow