Li, Peng, Ji, Haoran, Wang, Chengshan, Zhao, Jinli, Song, Guanyu, Ding, Fei and Wu, Jianzhong  ORCID: https://orcid.org/0000-0001-7928-3602
2019.
Optimal operation of soft open points in active distribution networks under three-phase unbalanced conditions.
IEEE Transactions on Smart Grid
10
(1)
, pp. 380-391.
10.1109/TSG.2017.2739999
|
Abstract
The asymmetric integration of distributed generators (DGs) exacerbates the three-phase unbalanced condition in distribution systems. The serious unbalanced operation causes inefficient utilization of network assets and security risks in the system. Soft open point (SOP) is a flexible power electronic device which can achieve accurate active and reactive power flow control to balance the power flow among phases. This paper proposes an SOPs-based operation strategy for unbalanced active distribution networks. By regulating the operation of SOPs, the strategy can reduce power losses and simultaneously mitigate the three-phase unbalance of the upper-level grid. Semidefinite programming (SDP) relaxation is advocated to convert the original non-convex, nonlinear optimization model into an SDP formulation, which can be efficiently solved to meet the requirement of rapid adjustment. Case studies are conducted on the modified IEEE 33-node and IEEE 123-node distribution system to verify the effectiveness and efficiency of the proposed strategy.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Publisher: | Institute of Electrical and Electronics Engineers |
| ISSN: | 1949-3053 |
| Date of Acceptance: | 9 August 2017 |
| Last Modified: | 03 Nov 2022 09:46 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/105943 |
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