Enhanced performance controller for high power wind converters connected to weak grids

Shahparasti, Mahdi; Catalán, Pedro; Garcia, J. Ignacio; Candela, José Ignacio; Tarrasó, Andrés; Luna, Álvaro

doi:10.1049/iet-rpg.2019.1021

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…1). The nominal current of semiconductors of 2L-VSI will be selected slightly larger than the maximum load current because semiconductors do not have the overload current carrying capability, and converters will trip if the current exceeds this value [21].…”

Section: A System Configurationmentioning

confidence: 99%

Inrush Current Management During Medium Voltage Microgrid Black Start With Battery Energy Storage System

et al. 2022

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This paper addresses the black start of medium voltage distribution networks (MV-DNs) by a battery energy storage system (BESS). The BESS consists of a two-level voltage source inverter interfacing MV-DN which has limited overcurrent capability. On the other hand, MV-DN normally includes several step-up and step-down transformers that are drawing sympathetic inrush current in energizing stage. Therefore, the major difficulty to perform black start by BESS during MV-DN island operation lies in the fact that the inverter has to simultaneous control the network voltage and its output current. This paper presents two control approaches for a BESS in order to control the inrush current during MV-DN black start. The proposed control schemes consist of droop, voltage and current loops in the stationary reference frame. The droop loop is used to generate the voltage reference. An intermediate voltage and inner current loops are designed for output voltage regulation, current reference generation as well as current tracking, respectively. New reference modifiers are included into droop and voltage loops to limit inrush current. The proposed control schemes are experimentally tested for energizing Ingå MV-DN in Finland by 1 MVA BESS, and their performance is compared in terms of inrush current value and voltage quality. The obtained results prove that both methods are able to feed the load with a fixed voltage in the steady-state as well as to limit the transformer inrush current considering the inverter overcurrent limit.

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Section: A System Configurationmentioning

confidence: 99%

Inrush Current Management During Medium Voltage Microgrid Black Start With Battery Energy Storage System

et al. 2022

Self Cite

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“…The overall control scheme for a WFMS is described in Figure 1. A modern WF, which mostly consists of type 3 and type 4 turbines, can offer reactive power to the connected grid to stabilize the voltage [24]. These features have been integrated into the centralized control structure of a WF and are managed according to a particular objective function.…”

Section: System Descriptionmentioning

confidence: 99%

Development of practical allocation method for reactive power reference for wind farms through inner‐voltage restriction

Yoo

Jung

Song

et al. 2022

IET Generation Trans & Dist

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This study considers the optimal reactive power dispatch strategy that minimizes electrical loss while working within the constraints of the internal layout voltage. Wind turbines (WTs) with a power converter system can promptly generate reactive power, and when a reactive power order arrives from the connected grid, an operator can assign a reactive power reference to each wind turbine. Recently, multiple objective functions in use have been based on centralized control, but their flexibility has been determined as inadequate for situations in which the voltage range of the wind turbine is also a factor. The designated constraints of the voltage fluctuation for each section have thus been considered by designing and applying an adaptive method. The main purpose of such a method is to use general dispatch optimization while maintaining the voltage of each connection point within operating range. The included case studies are designed using an electromagnetic transients program that checks both the voltage and loss of the entire wind farm. We tried to identify voltage violations and confirmed the effectiveness of the proposed method. This work thus attempts to confirm whether an objective function can be implemented while also adhering to a certain grid code.

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A multi-output AC/DC energy conversion system for grid integration of bioelectrochemical power-to-gas storage

Shahparasti

Rajaei

Tarrassó

et al. 2022

Energy

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Enhanced performance controller for high power wind converters connected to weak grids

Cited by 4 publications

References 35 publications

Inrush Current Management During Medium Voltage Microgrid Black Start With Battery Energy Storage System

Inrush Current Management During Medium Voltage Microgrid Black Start With Battery Energy Storage System

Development of practical allocation method for reactive power reference for wind farms through inner‐voltage restriction

A multi-output AC/DC energy conversion system for grid integration of bioelectrochemical power-to-gas storage

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