EPE Association: EPE 2019 - LS5b: Wind Power

EPE 2019 - LS5b: Wind Power
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2019 ECCE Europe - Conference > EPE 2019 - Topic 05: Renewable Energy Power Systems > EPE 2019 - LS5b: Wind Power

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   Failure Modes, Effects and Criticality Analysis (FMECA) in Power Electronic based Power Systems
By Saeed PEYGHAMI [View]
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Abstract: Power electronics is becoming an underpinning technology for modern power systems. Power converters are increasingly used in various applications implying different levels of importance in power systems. Hence, optimal decision-making for manufacturing, control, operation and maintenance of them requires understanding of their importance in the power systems. Furthermore, identifying the converters importance may be beneficial for simplifying the system-level reliability modeling in a large Power Electronic based Power Systems (PEPSs). Thereby, a Failure Mode, Effects and Criticality Analysis (FMECA) approach is proposed in this paper in order to figure out the importance of converters in PEPSs. The failure modes are classified by contingency analysis and their effects are predicted by a power system risk measure. Afterwards, the critical modes and critical components are identified. The FMECA is exemplified by a wind farm connected to the grid through an HVDC transmission system. The obtained results imply the criticality of the HVDC control system, its DC filters followed by its converters.

   Hybrid HVDC System for Offshore Wind Farms Connection Using Series-connected Diode Rectifier Units
By Ashkan NAMI [View]
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Abstract: This paper presents a hybrid high voltage direct current (HVDC) system for offshore wind farms (OWFs) connection using a series-connection of diode rectifier units (DRUs). The proposed approach overcomes all the drawbacks of the DRU in such applications using a low-power voltage source converter (VSC) connected in parallel with all the DRUs. The distributed version of the proposal is presented as well in which a number of VSCs are connected in parallel with individual DRUs. A comparison in terms of relative losses, cost and volume is carried out between the proposed approach and the traditional VSC-HVDC connection for OWFs. The performance of the proposal is validated through a detailed switching model of the system using the operation of a modular multilevel converter with half-bridge cells.

   On the Black Start of Offshore Wind Power Plants with Diode Rectifier based HVDC Transmission
By Ragavendran RAMACHANDRAN [View]
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Abstract: This paper attempts a detailed comparison of some of the solutions for the black start of the Offshore Wind Power Plants with Diode Rectifier based HVDC transmission. The major challenges and control requirements to ensure the black start operation are explained following a brief review of the existing capabilities of wind generators. The various solutions surveyed as part of the study are presented along with a detailed comparison. Moreover, a case study is simulated, supported by calculations to highlight the power requirements of the offshore grid during black start, enabling further assessment of the black start solutions discussed.

   STATCOM Operation and Control for Offshore Wind Farms with Diode Rectifier-based HVDC Connection
By Ashkan NAMI [View]
[Download]

Abstract: This paper presents a comparison between two variants of STATCOM topologies for offshore wind farms (OWFs) connected to the diode rectifier-based high voltage direct current links: The two-level STATCOM and the cascaded H-bridge STATCOM. These converter topologies are compared during three functions: the OWF frequency control, active power filtering and negative-sequence voltage compensation. The comparison includes the system operation and control during both normal and fault conditions. The dynamic behavior, fault-ride-through capability, power losses and relative cost of both approaches are evaluated through simulation model of the system during a specific study case.

EPE 2019 - LS5b: Wind Power
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2019 ECCE Europe - Conference > EPE 2019 - Topic 05: Renewable Energy Power Systems > EPE 2019 - LS5b: Wind Power
	[return to parent folder]

	Failure Modes, Effects and Criticality Analysis (FMECA) in Power Electronic based Power Systems By Saeed PEYGHAMI	[View] [Download]
Abstract: Power electronics is becoming an underpinning technology for modern power systems. Power converters are increasingly used in various applications implying different levels of importance in power systems. Hence, optimal decision-making for manufacturing, control, operation and maintenance of them requires understanding of their importance in the power systems. Furthermore, identifying the converters importance may be beneficial for simplifying the system-level reliability modeling in a large Power Electronic based Power Systems (PEPSs). Thereby, a Failure Mode, Effects and Criticality Analysis (FMECA) approach is proposed in this paper in order to figure out the importance of converters in PEPSs. The failure modes are classified by contingency analysis and their effects are predicted by a power system risk measure. Afterwards, the critical modes and critical components are identified. The FMECA is exemplified by a wind farm connected to the grid through an HVDC transmission system. The obtained results imply the criticality of the HVDC control system, its DC filters followed by its converters.

	Hybrid HVDC System for Offshore Wind Farms Connection Using Series-connected Diode Rectifier Units By Ashkan NAMI	[View] [Download]
Abstract: This paper presents a hybrid high voltage direct current (HVDC) system for offshore wind farms (OWFs) connection using a series-connection of diode rectifier units (DRUs). The proposed approach overcomes all the drawbacks of the DRU in such applications using a low-power voltage source converter (VSC) connected in parallel with all the DRUs. The distributed version of the proposal is presented as well in which a number of VSCs are connected in parallel with individual DRUs. A comparison in terms of relative losses, cost and volume is carried out between the proposed approach and the traditional VSC-HVDC connection for OWFs. The performance of the proposal is validated through a detailed switching model of the system using the operation of a modular multilevel converter with half-bridge cells.

	On the Black Start of Offshore Wind Power Plants with Diode Rectifier based HVDC Transmission By Ragavendran RAMACHANDRAN	[View] [Download]
Abstract: This paper attempts a detailed comparison of some of the solutions for the black start of the Offshore Wind Power Plants with Diode Rectifier based HVDC transmission. The major challenges and control requirements to ensure the black start operation are explained following a brief review of the existing capabilities of wind generators. The various solutions surveyed as part of the study are presented along with a detailed comparison. Moreover, a case study is simulated, supported by calculations to highlight the power requirements of the offshore grid during black start, enabling further assessment of the black start solutions discussed.

	STATCOM Operation and Control for Offshore Wind Farms with Diode Rectifier-based HVDC Connection By Ashkan NAMI	[View] [Download]
Abstract: This paper presents a comparison between two variants of STATCOM topologies for offshore wind farms (OWFs) connected to the diode rectifier-based high voltage direct current links: The two-level STATCOM and the cascaded H-bridge STATCOM. These converter topologies are compared during three functions: the OWF frequency control, active power filtering and negative-sequence voltage compensation. The comparison includes the system operation and control during both normal and fault conditions. The dynamic behavior, fault-ride-through capability, power losses and relative cost of both approaches are evaluated through simulation model of the system during a specific study case.