Voltage responsive distribution networks: Comparing autonomous and centralized solutions

Cuffe, Paul; Keane, Andrew

doi:10.1109/pesgm.2015.7286459

Cited by 5 publications

(11 citation statements)

References 7 publications

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“…Recently, this approach has been extended incorporating voltage control settings such as voltage set‐point or droop [37]. Hence, the wind farm actively responds to voltage excursion in accordance with its parameters (voltage set‐point or the droop) which are fixed.…”

Section: Dnet and Smgr Reviewmentioning

confidence: 99%

New challenges to wind energy voltage control. Survey of recent practice and literature review

Sáiz-Marín

Lobato

Egido

2017

IET Renewable Power Generation

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Implementing sophisticated voltage controls of wind farms may provide manifold benefits such as reducing losses of the distribution network (DNET) and harvesting network (HNET), increasing the wind hosting capacity of transmission networks (TNETs) and reducing wind curtailments. However, it represents an enormous challenge since wind energy is dispersed increasing the complexity of the required centralised control systems. This study contains a comprehensive state-of-the-art review of the huge research that is available in the literature in order to foster the participation of onshore wind energy in voltage control. The current situation is described by the actual technological developments of control devices and the regulatory framework of a set of European countries with high wind penetration figures. A classification of key wind voltage control concepts will be proposed in order to understand and organise the available literature references. The state-of-the-art review covers the integration of wind energy through DNETs, smart grids and dedicated HNETs into the TNET, covering research from a steady state and also dynamic perspective. The new requirements of theTransmission system operators tend to suggest that wind farms should have a similar performance compared with conventional plants. Thus, in this study, special attention will be given to the literature review of HNETs since it has been the most promising alternative of integrating wind voltage control into the existing transmission grid hierarchical control schemes. A set of relevant field experiences and international projects will be described, showing some effort to implement academic research into practice.

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Section: Dnet and Smgr Reviewmentioning

confidence: 99%

New challenges to wind energy voltage control. Survey of recent practice and literature review

Sáiz-Marín

Lobato

Egido

2017

IET Renewable Power Generation

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“…Reference [16] implements DVC within the OPF framework, for the purpose of firm DG allocation, and compares it versus the centralized control. Reference [27] takes a new approach within the MPOPF framework, in order to optimize DVC settings, such that a voltage responsive reactive power support is provided by the DWG, for the transmission system. The latter also provides a comparison of the DVC versus the centralized approach.…”

Section: E Decentralized Active Power Curtailment Control and Thermamentioning

confidence: 99%

“…The latter also provides a comparison of the DVC versus the centralized approach. Both [16] and [27] use the sigmoid function in order to define a voltage dependent reactive power dispatch at each connection bus, effectively making it decentralized.…”

Section: E Decentralized Active Power Curtailment Control and Thermamentioning

confidence: 99%

See 1 more Smart Citation

Autonomous Curtailment Control in Distributed Generation Planning

Džamarija

Keane

2016

IEEE Trans. Smart Grid

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While enabling prominent growth of renewablebased distributed generation (DG) and matching energy harvesting, nonfirm connection policy requires accompanying active and reactive power dispatch control. Centralized control often implies comprehensive communication infrastructure and notable capital investment. Hence, DG planning models tailored for decentralized management of thermal and voltage constraints are found wanting. This paper presents a DG planning methodology, which successfully incorporates a new decentralized active power curtailment control and also includes decentralized voltage control. It optimizes autonomous control settings for each generator individually, such that the net energy export from the distribution to transmission level, per unit of installed capacity, is maximized. Comparative time series analysis validates the methodology.Index Terms-Distributed generation (DG), network planning, optimal power flow (OPF), power curtailment control.

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“…Hence, many contributions have evaluated how best to evolve the passive DNets into active ones, which is an intermediate step towards the concept of smart distribution grids [8]. For such purposes, both centralised [8–12] and decentralised [13–18] reactive power control schemes have been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Offline tuning of dynamic settings considering an online central controller in a wind energy harvesting network

Sáiz-Marín

Cuffe

Keane

et al. 2015

IET Renewable Power Generation

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This study aims to define an online reactive power control scheme for a wind energy harvesting network such that it regulates the voltage at the transmission level in a manner comparable to a conventional synchronous plant and hence could be integrated in an existing transmission network hierarchical voltage control scheme. For that purpose, all decentralised elements within the network (wind farms and on load tap changing (OLTC) transformers) should be coordinated. In that sense, a central controller needs to be implemented. Unwanted controller interactions may then arise as the various decentralised controllers dynamically respond to the changing set-points received from a central controller. To mitigate these interactions, this study proposes a novel offline optimisation approach for tuning the dynamic settings (i.e. settings that affect the central controller temporal evolution such as time constant, time delays or dead bands). These settings ensure that the centrally determined set-points can actually be achieved in practice, and unlocking such performance is the principle research contribution of the present study.

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Voltage responsive distribution networks: Comparing autonomous and centralized solutions

Cited by 5 publications

References 7 publications

New challenges to wind energy voltage control. Survey of recent practice and literature review

New challenges to wind energy voltage control. Survey of recent practice and literature review

Autonomous Curtailment Control in Distributed Generation Planning

Offline tuning of dynamic settings considering an online central controller in a wind energy harvesting network

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