Consistent solution for electric power system simulations with inconsistent initial values

authored by

Hauke Hendrik Huisinga, Lutz Hofmann

Abstract

Consistent initial values, which fulfil the algebraic constraints, are necessary for the simulation of differential-algebraic equations. Inconsistent initial values can lead to permanently false solutions. The calculation of consistent initial values can be more expensive than the simulation itself. In this paper, the options to deal with inconsistent initial values as well as a new approach for electric power system simulations are presented. To show the influence of inconsistent initial values for an electromagnetic transient simulation of an electric power system, formulated with the extended nodal approach, the algebraic constraints are derived and systematically violated. Deduced from this, a circuit theoretical interpretation for the inconsistent values for a linear time-invariant differential-algebraic equation is presented. The discussed solution approaches are carried out by different adaptions of the differential-algebraic equation, which have the consequence that the approximated solution returns to a consistent solution after a transient. Finally, the effects of the interventions on the differential-algebraic equation system are presented and evaluated.

Organisation(s)

Electric Power Engineering Section

Type

Conference contribution

No. of pages

6

Publication date

2020

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Control and Optimization, Artificial Intelligence, Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment, Electrical and Electronic Engineering, Industrial and Manufacturing Engineering, Environmental Engineering

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1109/EEEIC/ICPSEurope49358.2020.9160814 (Access: Closed)