Supplementary control based on current source coupling for improving dynamic characteristics of active distribution network

Supplementary control based on current source coupling for improving dynamic characteristics of active distribution network

Hou, Jue (Huazhong University of Science and Technology)
Liu, Zhou (Aalborg University)
Wang, Shaorong (Huazhong University of Science and Technology)
Chen, Zhe (Aalborg University)
Xie, Wei (The State Grid Shanghai Municipal Electric Power Company)
Fang, Cheng (The State Grid Shanghai Municipal Electric Power Company)
Wei, Xinchi (The State Grid Shanghai Municipal Electric Power Company)
Popov, M. (TU Delft Intelligent Electrical Power Grids)

2022

Supplementary control (SC) technology is widely leveraged by power supply companies in active distribution networks (ADNs) to improve their stability and dynamic characteristics. Yet, the existed SCs are generally implemented from inside the converter controllers of distributed generators (DGs) or active loads, so there is a need to redesign the internal physical structure of the existing controller, resulting in the increasing work amount of assembling and workability. This paper studies the specific R & D process of a novel external coupling type SC (ECSC), which is based upon current source injection (CSI-ECSC) for improving the dynamic characteristics of ADN. The SC current signals are coupled to the current sampling loop from outside the converter controller. And the employment of the existing current sample makes it unnecessary to redesign the internal physical structure of the existing controller. As a result, the SC assembling is simplified and its workability is improved. In this paper, a detailed exemplary ADN with direct-drive permanent magnet synchronous generator (PMSG) is firstly set up in math for full eigenvalue analysis. Then, the CSI-ECSC is designed with its control loop, interface circuit, and parameter setting. Furthermore, by using PSCAD/EMTDC, groups of case studies are conducted in ADNs where photovoltaics (PVs) and energy storage (ES) are included. Finally, the real-time hardware-in-the-loop (HIL) testing validates the functionality of the realized CSI-ECSC in RTDS.

Active distribution network
Converter controller
Eigenvalue analysis
Hardware in the loop
RTDS
Supplementary control

http://resolver.tudelft.nl/uuid:7a9849c6-522c-4922-a0ba-f5ca7214f69c

https://doi.org/10.1016/j.ijepes.2021.107525

2022-03-03

0142-0615

International Journal of Electrical Power & Energy Systems, 135, 1-14

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2022 Jue Hou, Zhou Liu, Shaorong Wang, Zhe Chen, Wei Xie, Cheng Fang, Xinchi Wei, M. Popov