Control technique for the operation of grid-tied converters with high penetration of renewable energy resources

Mehrasa, Majid, Pouresmaeil, Edris, Sepehr, Amir, Pournazarian, Bahram, Marzband, Mousa and Catalão, João P.S. (2019) Control technique for the operation of grid-tied converters with high penetration of renewable energy resources. Electric Power Systems Research, 166. pp. 18-28. ISSN 0378-7796

[img] Text (Full text)
Mehrasa et al - Control Technique for the Operation of Grid-Tied Converters with High Penetration of Renewable Energy Resources AAM.docx - Accepted Version
Restricted to Repository staff only until 1 October 2019.

Download (2MB)
Official URL: http://dx.doi.org/10.1016/j.epsr.2018.09.015

Abstract

This paper deals with a control technique based on inherent characteristics of synchronous generators (SG) for control of interfaced converters with high penetration of renewable energy resources (RERs) into the power grid, as a new contribution to earlier studies. To present an appropriate assessment of the proposed control technique, under dynamic operating condition, a P–Q curve is extracted and analysed based on the different components and characteristics of the interfaced converter as well as the conventional relationship between the active and reactive power. By combining the swing equation of SG and the power-based dynamic model, a Pm–Q curve is achieved and the effects of the variations of embedded virtual inertia on virtual mechanical power are assessed. Moreover, by using small-signal linearization, the grid frequency stability is investigated based on both virtual inertia and mechanical power variations. In order to assess the power sharing ability of the proposed control technique, two transfer functions are obtained and then, the impacts of variations of virtual mechanical power on the active and reactive power of interfaced converter are evaluated through Nyquist and Root Locus diagrams. Simulation results confirm that the proposed control technique can guarantee the operation of interfaced converters, based on inherent characteristics of SG, to deal with the power grid stability with high penetration of RERs.

Item Type: Article
Uncontrolled Keywords: Renewable energy resources; Synchronous generator; Power grid stability; Virtual inertia; Virtual mechanical power error
Subjects: H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Paul Burns
Date Deposited: 22 Oct 2018 10:06
Last Modified: 22 Oct 2018 10:06
URI: http://nrl.northumbria.ac.uk/id/eprint/36378

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence