MN
Mario Ndreko
22 records found
1
Authored
The radial topology of the Multi-terminal High Voltage Direct Current (MTDC) power system is a preferred connection for the gigawatt- renewable power due to its scalability and reliability. However, a radial topology with a metallic return bipolar converter configuration MTDC ...
Offshore wind power plants with VSC-HVDC transmission
Grid code compliance optimization and the effect on high voltage ac transmission system
The development of large offshore wind power generation in the North Sea has been significantly accelerated in the last years. The large distance from shore in combination with the need for large transmission capacity has raised the interest for the voltage source converter high
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This paper introduces a new approach for the optimal management of reactive power, with emphasis on offshore wind power plants. The approach follows a predictive optimization scheme (i.e. day-ahead, intraday application).
Predictive optimization is based on the principle of m ...
Predictive optimization is based on the principle of m ...
This paper presents a novel iterative procedure augmented by electromagnetic transient type simulations and the state of the art mean variance mapping optimization algorithm. The aforementioned procedure enables the optimal tuning of coordinated fault ride through compliance stra
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In this paper three new control modules are introduced for offshore wind power plants with VSC-HVDC transmission. The goal is to enhance the Fault Ride Thought (FRT) capability of the HVDC system and the connected offshore wind power plant during balanced and unbalanced AC faults
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Mean-variance mapping optimization (MVMO) is an emerging metaheuristic optimization algorithm, whose evolutionary mechanism performs within a normalized search space. The most remarkable aspect of this mechanism resides in the application of a special mapping function to generate
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Offshore Wind Plants with VSC-HVDC Connection and their Impact on the Power System Stability:
Modeling and Grid Code Compliance
This report is built within the content of the MS.c course EE4545 at TU Delft. It aims to provide an introduction to typical grid codes for DC connected wind plant. In addition, the report discusses the modeling approach used for wind plants and VSC-HVDC systems and provides insi
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This paper presents the effect of the negative sequence current control strategy of an MMC-HVDC system on the single-line-to-ground (SLG) fault response of the high AC transmission lines. Four different methods reported in the literature are compared. The paper shows that the neg
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This paper studies the effect of the negative sequence current control scheme of a VSC-HVDC system on the positive, the negative and the zero sequence voltage and current components of a 380kV onshore AC transmission line during
sustained unbalanced AC faults. It is assumed for t
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This paper proposes a new knowledge-based control philosophy for the direct voltage and power control of a multi-terminal voltage source converter based offshore HVDC grid. The limitations of the classical direct voltage droop control
strategy are discussed and mainly the difficu
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This paper proposes a new methodology for the optimal compliance of type-4 wind power plants in VSC-HVDC grid connection with the typical Fault-Ride-Through (FRT) requirements. Unlike the traditional chopper based solution, an improved offshore AC voltage droop FRT strategy, whic
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