File(s) under permanent embargo

Reason: This item is currently closed access.

Optimal power flow in multi-terminal HVDC networks for DC-System operator: constant current operation

conference contribution
posted on 09.03.2016, 15:21 by Francisco Gonzalez-Longatt
© 2015 IEEE. DC System Operator (DCSO) is a radical concept. This single entity is designed to coordinate, to control and monitor the operation of the DC transmission system. DCSO is accountable for safeguarding the reliability and security of the DC meshed grid in real-time and co-ordinate the supply of and demand for electricity, in a manner that avoids violations of technical and economic standards. This paper proposes a very simple methodology for optimal power flow (OPF) for DC grids which allows constant current operation in a series branch in order to handle one the possible DCSO objectives. The main contribution of this paper is a simple methodology that permits including new DC operator objectives as in the OPF problem as a type linear equality constraints, it is based on nodal analysis. This paper explores one operator objectives: constant current operation. Proposed methodology has been thoroughly illustrated and tested using a 3-node, 5-node and 7-node DC grids, and results show the validity of the proposed approach.



  • Mechanical, Electrical and Manufacturing Engineering

Published in

Proceedings of the Universities Power Engineering Conference




GONZALEZ-LONGATT, F.M., 2015. Optimal power flow in multi-terminal HVDC networks for DC-System operator: constant current operation. Proceedings, 2015 50th International Universities Power Engineering Conference (UPEC), 1‐4 September 2015, Stoke‐on‐Trent, United Kingdom


VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at:

Publication date



This paper is closed access.





Usage metrics