EPE Association: WECS 2010 - 03d - Dialogue Session: Power System Operation and Control

WECS 2010 - 03d - Dialogue Session: Power System Operation and Control
You are here: EPE Documents > 03 - EPE Seminar Papers > 004 - EPE Wind Energy Chapter Seminar (2010) > WECS 2010 - 03d - Dialogue Session: Power System Operation and Control

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   Multilevel cascaded H-bridge inverter with integrated battery management for alternative energy applications (Poster)
By K. Wilkie; D. Stone; M. Foster; C. Bingham [View]
[Download]

Abstract: A multilevel energy storage and utility supply interface is proposed using cascaded H-bridges with isolated sources to provide superior output voltage waveforms and reduced current ripple in the utility supply, whilst incorporating SoC estimation. Energy management, based on SoC, is integrated to improve battery performance, reduce variation between batteries and to control discharge profiles of the storage batteries.

   Strategies for Reactive Power Control in Wind Farms with STATCOM (Paper)
By Francisco Diaz-Gonzalez; Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt; Lluis Trilla [View]
[Download]

Abstract: This paper presents three strategies for reactive power control in wind farms with STATCOM. First, the STATCOM system and its applications in electric power systems and wind farms are shown. Second, the modeling done of the wind farm, the STATCOM and the network are presented. Finally, control strategies for reactive power delivered by the park to the network when required are shown. The result of the implementation of each control strategy is shown by simulation.

   Strategies for Reactive Power Control in Wind Farms with STATCOM (Poster)
By Francisco Diaz-Gonzalez; Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt; Lluis Trilla [View]
[Download]

Abstract: Technological development in the wind power field is an important challenge for its evolution. Therefore, the development of systems to improve voltage stability, frequency stability and power quality is an important line of research in the wind power field. In order to promote the integration of wind farms into the electrical network, Flexible AC Transmission Systems, FACTS, are widely used. The FACTS STATCOM system is one of them. Numerous studies have shown that transient and steady state stability can be improved by controlling the voltage of the connection point of the wind farm to the network. The STATCOM system stimulates voltage stability by reactive power regulation. STATCOM provides or absorbs reactive power to or from the grid to compensate voltage variations in the connection point of the wind farm with the grid. In this paper we show various control strategies for reactive power delivered by a wind farm, which has a STATCOM system. This is considered a 9-bus model network, a wind farm model consists of DFIG generators and a model of STATCOM. Numerous dynamic simulations are showed.

   Reactive power management in Wind Farms using PSO technique (Paper)
By Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt [View]
[Download]

Abstract: This paper presents a particle swarm optimization (PSO) technique for a reactive power wind farm (WF) dispatch function, in order to calculate the reactive power reference for each wind turbine (WT). The dispatch can be formulated as the problem of minimize the dierence in power interchange at interconnection point (PCC). Incorporation of PSO as a optimization technique for the WF dispatch make possible consider dierent parameters to improve it performance and give it more capabilities.

   Reactive power management in Wind Farms using PSO technique (Poster)
By Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt [View]
[Download]

Abstract: This paper presents a paerticle swarm optimization (PSO) technique for a reactive power wind farm (WF) dispatch function, in order to calculate the reactive power reference for each wind turbine (WT). The dispatch can be formulated as the problem of mionimize the difference in power interchange at interconnection point (PCC). Incorporation of PSO as a optimization technique for the WF dispatch make possible consider different parameters to improve it performance and give it more capabilities. The utility of the proposed technique is demonstrated by means of different methods, considering the minimisation of power losses.

   Wind Farm Output Smoothing Through Coordinated Control (Paper)
By Philip Clemow; Timothy C. Green; Carlos A. Hernandez [View]
[Download]

Abstract: This paper presents a new method of using coordinated control and short term wind speed prediction to smooth the output of an array of wind turbines. The proposed controller uses knowledge of the kinetic energy storage potential in the rotor disc to allow production of pre-determined power profiles for periods of around 60s from variable wind inputs. Previous studies have shown that there are large peaks in wind power variability in the minutes timescale which is within the ability of a control system to reduce. This variation will cause issues with balancing systems within the local grid, as such it is beneficial to remove it. Results of tests to the system are presented which show a significant reduction in wind farm output power variability without a significant drop in output power. Comparisons with the natural smoothing effect are also presented and show that despite the significant smoothing found in large and distributed wind farms, there is still a possibility to improve the output.

   Wind Farm Output Smoothing Through Coordinated Control (Presentation)
By Philip Clemow; Timothy C. Green; Carlos A. Hernandez [View]
[Download]

Abstract: The presentation of: Wind Farm Output Smoothing Through Coordinated Control

WECS 2010 - 03d - Dialogue Session: Power System Operation and Control
You are here: EPE Documents > 03 - EPE Seminar Papers > 004 - EPE Wind Energy Chapter Seminar (2010) > WECS 2010 - 03d - Dialogue Session: Power System Operation and Control
	[return to parent folder]

	Multilevel cascaded H-bridge inverter with integrated battery management for alternative energy applications (Poster) By K. Wilkie; D. Stone; M. Foster; C. Bingham	[View] [Download]
Abstract: A multilevel energy storage and utility supply interface is proposed using cascaded H-bridges with isolated sources to provide superior output voltage waveforms and reduced current ripple in the utility supply, whilst incorporating SoC estimation. Energy management, based on SoC, is integrated to improve battery performance, reduce variation between batteries and to control discharge profiles of the storage batteries.

	Strategies for Reactive Power Control in Wind Farms with STATCOM (Paper) By Francisco Diaz-Gonzalez; Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt; Lluis Trilla	[View] [Download]
Abstract: This paper presents three strategies for reactive power control in wind farms with STATCOM. First, the STATCOM system and its applications in electric power systems and wind farms are shown. Second, the modeling done of the wind farm, the STATCOM and the network are presented. Finally, control strategies for reactive power delivered by the park to the network when required are shown. The result of the implementation of each control strategy is shown by simulation.

	Strategies for Reactive Power Control in Wind Farms with STATCOM (Poster) By Francisco Diaz-Gonzalez; Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt; Lluis Trilla	[View] [Download]
Abstract: Technological development in the wind power field is an important challenge for its evolution. Therefore, the development of systems to improve voltage stability, frequency stability and power quality is an important line of research in the wind power field. In order to promote the integration of wind farms into the electrical network, Flexible AC Transmission Systems, FACTS, are widely used. The FACTS STATCOM system is one of them. Numerous studies have shown that transient and steady state stability can be improved by controlling the voltage of the connection point of the wind farm to the network. The STATCOM system stimulates voltage stability by reactive power regulation. STATCOM provides or absorbs reactive power to or from the grid to compensate voltage variations in the connection point of the wind farm with the grid. In this paper we show various control strategies for reactive power delivered by a wind farm, which has a STATCOM system. This is considered a 9-bus model network, a wind farm model consists of DFIG generators and a model of STATCOM. Numerous dynamic simulations are showed.

	Reactive power management in Wind Farms using PSO technique (Paper) By Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt	[View] [Download]
Abstract: This paper presents a particle swarm optimization (PSO) technique for a reactive power wind farm (WF) dispatch function, in order to calculate the reactive power reference for each wind turbine (WT). The dispatch can be formulated as the problem of minimize the dierence in power interchange at interconnection point (PCC). Incorporation of PSO as a optimization technique for the WF dispatch make possible consider dierent parameters to improve it performance and give it more capabilities.

	Reactive power management in Wind Farms using PSO technique (Poster) By Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt	[View] [Download]
Abstract: This paper presents a paerticle swarm optimization (PSO) technique for a reactive power wind farm (WF) dispatch function, in order to calculate the reactive power reference for each wind turbine (WT). The dispatch can be formulated as the problem of mionimize the difference in power interchange at interconnection point (PCC). Incorporation of PSO as a optimization technique for the WF dispatch make possible consider different parameters to improve it performance and give it more capabilities. The utility of the proposed technique is demonstrated by means of different methods, considering the minimisation of power losses.

	Wind Farm Output Smoothing Through Coordinated Control (Paper) By Philip Clemow; Timothy C. Green; Carlos A. Hernandez	[View] [Download]
Abstract: This paper presents a new method of using coordinated control and short term wind speed prediction to smooth the output of an array of wind turbines. The proposed controller uses knowledge of the kinetic energy storage potential in the rotor disc to allow production of pre-determined power profiles for periods of around 60s from variable wind inputs. Previous studies have shown that there are large peaks in wind power variability in the minutes timescale which is within the ability of a control system to reduce. This variation will cause issues with balancing systems within the local grid, as such it is beneficial to remove it. Results of tests to the system are presented which show a significant reduction in wind farm output power variability without a significant drop in output power. Comparisons with the natural smoothing effect are also presented and show that despite the significant smoothing found in large and distributed wind farms, there is still a possibility to improve the output.

	Wind Farm Output Smoothing Through Coordinated Control (Presentation) By Philip Clemow; Timothy C. Green; Carlos A. Hernandez	[View] [Download]
Abstract: The presentation of: Wind Farm Output Smoothing Through Coordinated Control