Voltage control in transmission grids considering uncertainties of renewable energy sources

authored by

Markus Knittel, Neelotpal Majumdar, Maximilian Schneider, Nicolas Thie, Albert Moser

Abstract

Power traders and system operators need to balance the uncertain generation of renewable energy sources by adapting the dispatch of conventional power plants. This poses a challenge to voltage control in power system operation. Accordingly, this paper presents a method to determine voltage magnitude probability densities which are integrated into an optimal reactive power flow to consider an uncertain active power generation. First, the probability densities are determined by Monte Carlo simulations including a unit commitment problem to derive the dispatch of conventional power plants. Second, uncertainty restrictions are used to create soft constraints for the optimal reactive power flow, which mitigates the risk of voltage limit violations. By adapting the soft constraints slack costs, the consideration of uncertainties can be prioritized in relation to other objectives, such as the reduction of active power losses, or reactive power costs.

External Organisation(s)

RWTH Aachen University

Type

Conference contribution

Pages

580-585

No. of pages

6

Publication date

28.09.2020

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Electrical and Electronic Engineering, Mechanical Engineering, Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1109/energycon48941.2020.9236597 (Access: Closed)