Solution of ac/dc power flow on a multiterminal HVDC system: Illustrative case supergrid phase I

2015 International Conference on Energy Economics and Environment (ICEEE)

Carmona-Delgado

Santos

et al. 2015

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Abstract-The use of multi-terminal HVDC to integrate wind power coming from the North Sea opens de door for a new transmission system model, the DC-Independent System Operator (DC-ISO). DC-ISO will face highly stressed and varying conditions that requires new risk assessment tools to ensure security of supply. This paper proposes a novel risk-based static security assessment methodology named risk-based DC security assessment (RB-DCSA). It combines a probabilistic approach to include uncertainties and a fuzzy inference system to quantify the systemic and individual component risk associated with operational scenarios considering uncertainties. The proposed methodology is illustrated using a multi-terminal HVDC system where the variability of wind speed at the offshore wind is included.

“…A sequential AC/DC power flow is used in this paper; it includes the main features of operation and control associated to converter stations [14].…”

Section: Methodology Of Rb-dcsamentioning

confidence: 99%

Risk-based DC security assessment for future DC-independent system operator

2015 International Conference on Energy Economics and Environment (ICEEE)

Carmona-Delgado

Santos

et al. 2015

Self Cite

“…The current injected (Ii) is written into a matrix form [14] using the conductance matrix (G) of the DC grid can be used:    P = U GU (3) where the symbol  is entry-wise (point-to-point) matrix multiplication operator. Equation (3) is known as the power balance equation and it can be solved in order to obtain the classical power flow solution of the MTDC system.…”

Section: ) Monopole Configuration: Ideal Ground Returnmentioning

confidence: 99%

Effects of grounding configurations on post-contingency performance of MTDC system: A 3-Terminal example

2015 50th International Universities Power Engineering Conference (UPEC)

Rueda

Meijden

2015

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Abstract-The grounding system is extremely important, as it affects the performance of the MTDC system virtually in any possible mode: normal (asymmetrical operation) and abnormal operation (faults), steady-state and dynamic. The objective of this paper is to introduce a simple approach to assess the steadystate post-contingency of multi-Terminal HVDC System and uses it order to illustrate the effects of grounding configurations on steady-state post-contingency performance. A 3-terminal HVDC system is used to formulate the main theoretical framework for performance prediction on post-contingency steady-state of MTDC system as well as for demonstrative purposes.

“…Also, a pan-European transmission network is required in order to balancing and transportation of electricity in order to reach the objective of the one single European market [1], [2]. MTDC offers higher reliability, redundant and flexible technology to enable the massive integration of offshore wind power in future power systems.…”

Section: Introductionmentioning

confidence: 99%

“…Several publications [7][8][9][10][11][12] present solutions to the problem of optimal steady-state operation of the MTDC systems considering voltage droop controller [2]and others. However, the main focus of those papers is on minimizing the power losses in MTDC for large offshore wind power plants or a transnational Supergrid.…”

Section: Introductionmentioning

confidence: 99%

Optimal power flow in MTDC systems based on a DC-independent system operator objective

2015 IEEE Eindhoven PowerTech

2015

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Abstract-DC Independent System Operator (DC-ISO) is a single coordinate, to control and monitor the operation of the DC transmission system. It will be responsible for ensuring the reliability and security of the multi-terminal HVDC (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. This paper proposes a simple methodology for optimal power flow (OPF) allowing the DC-ISO objectives to be included in the solution. One of the contribution of this paper is include new operator objectives as in the OPF problem as a type linear equality constraints, it is based on nodal analysis. Proposed methodology has been thoroughly illustrated and tested with a simple 3-node MTDC system, and results show the validity of the proposed approach.