EPE Association: EPE 2023 - LS3e: HVDC, Distribution & Microgrids Control

EPE 2023 - LS3e: HVDC, Distribution & Microgrids Control
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 07: Power Supplies > EPE 2023 - LS3e: HVDC, Distribution & Microgrids Control

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   Comparison between DC Voltage Droop Schemes and Grid-Following & Grid-Forming Control in AC Systems in View of Interoperability of MTDC grids
By Kosei SHINODA, Mohamed ELSODANY, Juan-Carlos GONZALEZ, Jing DAI, Abdelkrim BENCHAIB, Seddik BACHA [View]
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Abstract: This paper explores the fundamental characteristics of two typical DC voltage droop controlschemes, namely the direct droop where the power setpoint is adjusted in proportion to the DC-voltage deviation, and the inverse droop where the DC-voltage setpoint is adjusted in proportion to the power deviation. We draw an analogy between these two droop controls for DC voltage regulation and and the grid-following and grid-forming controls in AC systems. Simulation results show that, forthe security of the DC grid, it is crucial to specify the desired characteristics of droop-controlled stations in both steady state and transient.

   Function and performance of Multi-Terminal Hybrid UHVDC System
By Weihuang HUANG, Guiyuan LI, Hong RAO, Yan LI [View]
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Abstract: This paper conducts research on the functions and performance of multi-terminal hybrid UHVDC systems. According to the operating characteristics of half-bridge and full-bridge mixed VSC, this paper analyzes how to realize the hybrid connection of LCC and VSC through external characteristic matching. The special functions and operating characteristics of multiterminal hybrid UHVDC under core operating conditions such as AC and DC faults ride-though and valve online switching-in-out are studied in detail. Finally, the real-time simulation platform was used to verify the analyzed characteristicsand designed functions in the hardware closedlooptest.

   Investigation of the Stabilizing Impact of Grid-Forming Controls for LCL-connected Converters
By Yahya LAMRANI, Frédéric COLAS, Thierry VAN CUTSEM, Carmen CARDOZO, Thibault PREVOST, Xavier GUILLAUD [View]
[Download]

Abstract: The validity of reported contributions of different grid-forming controls to small-signal stability is investigated for LCL-connected converters. A two-converter test setup is proposed to overcome the limits of the Thévenin equivalent setup. Simulation results confirm that voltage controlled grid-forming control provides a better stabilizing impact than its current controlled counterpart.

EPE 2023 - LS3e: HVDC, Distribution & Microgrids Control
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 07: Power Supplies > EPE 2023 - LS3e: HVDC, Distribution & Microgrids Control
	[return to parent folder]

	Comparison between DC Voltage Droop Schemes and Grid-Following & Grid-Forming Control in AC Systems in View of Interoperability of MTDC grids By Kosei SHINODA, Mohamed ELSODANY, Juan-Carlos GONZALEZ, Jing DAI, Abdelkrim BENCHAIB, Seddik BACHA	[View] [Download]
Abstract: This paper explores the fundamental characteristics of two typical DC voltage droop controlschemes, namely the direct droop where the power setpoint is adjusted in proportion to the DC-voltage deviation, and the inverse droop where the DC-voltage setpoint is adjusted in proportion to the power deviation. We draw an analogy between these two droop controls for DC voltage regulation and and the grid-following and grid-forming controls in AC systems. Simulation results show that, forthe security of the DC grid, it is crucial to specify the desired characteristics of droop-controlled stations in both steady state and transient.

	Function and performance of Multi-Terminal Hybrid UHVDC System By Weihuang HUANG, Guiyuan LI, Hong RAO, Yan LI	[View] [Download]
Abstract: This paper conducts research on the functions and performance of multi-terminal hybrid UHVDC systems. According to the operating characteristics of half-bridge and full-bridge mixed VSC, this paper analyzes how to realize the hybrid connection of LCC and VSC through external characteristic matching. The special functions and operating characteristics of multiterminal hybrid UHVDC under core operating conditions such as AC and DC faults ride-though and valve online switching-in-out are studied in detail. Finally, the real-time simulation platform was used to verify the analyzed characteristicsand designed functions in the hardware closedlooptest.

	Investigation of the Stabilizing Impact of Grid-Forming Controls for LCL-connected Converters By Yahya LAMRANI, Frédéric COLAS, Thierry VAN CUTSEM, Carmen CARDOZO, Thibault PREVOST, Xavier GUILLAUD	[View] [Download]
Abstract: The validity of reported contributions of different grid-forming controls to small-signal stability is investigated for LCL-connected converters. A two-converter test setup is proposed to overcome the limits of the Thévenin equivalent setup. Simulation results confirm that voltage controlled grid-forming control provides a better stabilizing impact than its current controlled counterpart.