Operational characteristics of non-firm wind generation in distribution networks

Džamarija, Mario; Bakhtvar, Mostafa; Keane, Andrew

doi:10.1109/pesgm.2012.6345055

Cited by 9 publications

(10 citation statements)

References 9 publications

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“…Both methodologies draw on the ac optimal power flow tool first described in [17], in addition to previous enhancements given in [13] and [18]; taken together, these references elucidate the detailed model whose treatment here is somewhat abbreviated for brevity. Central to the tool are the power flow equations for π-equivalent medium length lines, supplemented by the essential bounding constraints on such variables as node voltages.…”

Section: Optimization Methodologiesmentioning

confidence: 99%

Voltage responsive distribution networks: Comparing autonomous and centralized solutions

Cuffe¹,

Keane²

2015

2015 IEEE Power &Amp; Energy Society General Meeting

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Section: Optimization Methodologiesmentioning

confidence: 99%

Voltage responsive distribution networks: Comparing autonomous and centralized solutions

Cuffe¹,

Keane²

2015

2015 IEEE Power &Amp; Energy Society General Meeting

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“…Constraint equations governing active and reactive power flow in the AC OPF tool, derived from the PI equivalent circuit for medium length transmission lines, are used in this research and can be accessed in [11]. In the present work, active synchronous generation dispatch, P CG , is predetermined externally, prior to the AC OPF and constrained through (2).…”

Section: B Constraintsmentioning

confidence: 99%

Optimisation of wind farm reactive power for congestion management

Murphy

Keane

2013

2013 IEEE Grenoble Conference

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Variable speed wind turbines are fast becoming the most adopted form of turbine in the harvesting of wind energy. Global awareness of a carbon free mode of electricity generation is driving the interest in the installation of this technology. With increasing wind farm connections on power systems, effective congestion management is vital for maintaining a secure and stable system. Power electronics enable the control of reactive power from modern wind turbines. In this paper the control of this resource has been incorporated into an AC Optimal Power Flow (OPF) tool. This work investigates the ability of wind farms in altering system flows with the aim of easing congestion. This paper shows that minimising the power flow through a selection of congested lines is possible with the coordinated response of reactive power dispatch from wind farms.

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“…This work draws on the custom AC OPF tool more fully described in [22]: at the heart of the model are the archetypal power flow equations for π-equivalent medium length lines. This formulation gives explicit representation to voltage magnitudes and angles, and is thus appropriate for modelling distribution systems, where line resistances are non-negligible.…”

Section: B Optimal Power Flow Frameworkmentioning

confidence: 99%

Capability chart for distributed reactive power resources

Cuffe

Smith

Keane

2013

2013 IEEE Power &Amp; Energy Society General Meeting

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Abstract-The ubiquity of synchronous generation should not be assumed in highly renewable power systems. Various problems may consequently arise: not least, the difficulties entailed in maintaining regional reactive power balance. Offering a potential solution to such problems, modern renewable generator technologies offer controllable reactive power resources. As many of these generators will be embedded in distribution networks, their incorporation into transmission system operational and planning activities appears challenging. An extension of the capability chart concept offers insight here: for a given active power exchange between the transmission system and a distribution network section, the range of controllable reactive power typically available is of interest. This aggregate capability depends on the innate machine capabilities of the distributed generators and on the prevailing conditions within the distribution network. Novel optimisation techniques are useful in addressing the latter point, offering a means to identify the combination of power flow profiles within the distribution system most restrictive to reactive power provision. The capability chart thus derived gives the dependable range of reactive power available, under the assumption that each generator is operated to locally maximise its own reactive power contribution. Such a description can be applied in transmission system planning, or to quantify the effects of modifications to the distribution system.

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Operational characteristics of non-firm wind generation in distribution networks

Cited by 9 publications

References 9 publications

Voltage responsive distribution networks: Comparing autonomous and centralized solutions

Voltage responsive distribution networks: Comparing autonomous and centralized solutions

Optimisation of wind farm reactive power for congestion management

Capability chart for distributed reactive power resources

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