Inertial response from offshore wind farms connected through DC grids

Sanz, Inmaculada Martínez; Chaudhuri, Balarko; Štrbac, Goran

doi:10.1109/pesgm.2016.7741969

Cited by 17 publications

(22 citation statements)

References 23 publications

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“…The SI and primary frequency response (PFR) capabilities of different turbine technologies are assessed in [6], and the maximum temporary extra active power supply from a multi-megawatt VSWT is quantified in [7]. In addition, the delivery of frequency response support from HVDC connected offshore WPs is discussed in [8] [9].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Role and Value of Frequency Response Support From Wind Plants

Teng

Štrbac

2016

IEEE Trans. Sustain. Energy

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140

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-High penetration of wind generation causes concerns over frequency stability, as currently wind plants do not provide frequency response support. Extensive research has been conducted to investigate alternative designs of controllers to facilitate the provision of synthetic inertia and primary frequency response from wind plants. However, frequency response support from wind plants differs from that provided by conventional plants and its impact on the system's economic performance is not yet fully understood. In this context, this paper develops a novel methodology to incorporate the frequency response support from wind plants into generation scheduling, thus enabling the benefits of alternative control strategies to be quantified. Studies are carried out on the future Great Britain power system with different wind energy penetration levels and frequency response requirements. The impact of the uncertainty associated with the quantity of wind plants being online and the energy recovery effect are also analysed. The results demonstrate that the benefits of frequency response support from wind plants may be significant, although these are system specific. The proposed model could also inform the development of grid codes, market mechanisms and business cases associated with the frequency response support from wind plants.Index Terms-Wind generation, inertia response, primary frequency response, unit commitment, power system dispatch.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Role and Value of Frequency Response Support From Wind Plants

Teng

Štrbac

2016

IEEE Trans. Sustain. Energy

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140

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“…Dynamic responses of the DC grid are improved in [11,12]. The MMC based HVDC-line protection methods for DC-grid are described in [13,14].…”

Section: Literature Reviewmentioning

confidence: 99%

Design and Line Fault Protection Scheme of a DC Microgrid Based on Battery Energy Storage System

et al. 2018

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Currently, the Direct-Current (DC) microgrid has been gaining popularity because most electronics devices require a DC power input. A DC microgrid can significantly reduce the AC to DC energy conversion loss. However, a power grid may experience a line fault situation that may damage important household devices and cause a blackout in the power system. This work proposes a new line fault protection scheme for a DC microgrid system by using a battery energy storage system (BESS). Nowadays, the BESS is one of the most cost effective energy storage technologies for power system applications. The proposed system is designed from a distributed wind farm smart grid. A total of three off-shore wind farms provide power to the grid through a high voltage DC (HVDC) transmission line. The DC microgrid was modeled by a BESS with a bi-directional DC-DC converter, various DC-loads with step down DC-DC converters, a voltage source converter, and a voltage source inverter. Details of the control strategies of the DC microgrid are described. During the line fault situation, a transient voltage was controlled by a BESS. From the simulation analyses, it is confirmed that the proposed method can supply stable power to the DC grid, which can also ensure protection of several loads of the DC microgrid. The effectiveness of the proposed system is verified by in a MATLAB/SIMULINK ® environment.

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“…In AC systems, frequency support is provided by releasing the energy stored in the rotating mass of the electrical machines connected to the system [14], [15]. These machines decrease their rotational speed so that power is transferred to the grid to prevent frequency from declining.…”

Section: Fast Frequency Support Control Schemementioning

confidence: 99%

Fast frequency support control in the GB power system using VSC-HVDC technology

Orellana

Matilla

Wang

et al. 2017

2017 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)

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A fast frequency support control scheme for voltage source converter based high-voltage direct-current (HVDC) links has been designed, simulated and experimentally implemented and validated. The effectiveness of the proposed scheme has been tested on simplified GB power system models with both averaged and switched converter models. System performance has been initially assessed using different software simulation platforms (PSCAD and MATLAB/Simulink). System validation has been carried out using an experimental test-rig. It is shown that simulation and experimental results agree on well when the fast frequency support provision is enabled. For completeness, the effectiveness of the control scheme has been tested for two contingency scenarios: (i) when a high-voltage alternating-current interlink in parallel with the HVDC link is disconnected, and (ii) for a substantial increase in system load.

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Inertial response from offshore wind farms connected through DC grids

Cited by 17 publications

References 23 publications

Assessment of the Role and Value of Frequency Response Support From Wind Plants

Assessment of the Role and Value of Frequency Response Support From Wind Plants

Design and Line Fault Protection Scheme of a DC Microgrid Based on Battery Energy Storage System

Fast frequency support control in the GB power system using VSC-HVDC technology

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