Optimal steady-state operation of a MTDC system based on DC-Independent System Operator Multi-objective

This paper introduces the new concept of DC Independent System Operator, DC-ISO. The DC-ISO will be responsible for ensuring the reliability and security of the MTDC system in real-time and co-ordinate the supply of and demand for electricity, in a manner that avoids violations of technical and economic standards. A methodology for an optimal steadystate operation of a MTDC system based on DC-ISO objectives has been presented in this paper. This paper proposes the use of a type linear equality constraints based on nodal analysis to include DC-ISO operational mode to the OPF. Proposed methodology has been demonstrated and tested with a 7-node HVDC system, and results show the compromise in solutions to cope with OPF.