EPE Association: EPE 2007 - Workshop: Industrial session of the joint EPE and IEEE Wind day (EPE Chapter on Wind Energy and joint IAS/PELS/IES Danish and German Chapters)

EPE 2007 - Workshop: Industrial session of the joint EPE and IEEE Wind day (EPE Chapter on Wind Energy and joint IAS/PELS/IES Danish and German Chapters)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Workshop: Industrial session of the joint EPE and IEEE Wind day (EPE Chapter on Wind Energy and joint IAS/PELS/IES Danish and German Chapters)

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   Utility-Connected Power Electronic Compensators in Wind Power Applications
By KEHRLI Bud; ROSS Michael [View]
[Download]

Abstract: Wind farm installations can often generate unique challenges and problems for developers, owners and wind turbine manufacturers, particularly as they consider issues relating to transmission access. Major concerns and challenges that they face are typically associated with voltage regulation, low voltage ride through, system stability and aspects of potential turbine damage and maintenance. Furthermore, in many countries the performance requirements are becoming stricter for wind turbines that are interconnected to the greater power grid. Early on, when with turbine installations made up far less than 1\% of a regions power generating capability, wind farms were often viewed as science experiments with unknown operating and performance characteristics. Because of the small size of these early installations, their impact on the greater power grid was considered insignificant. From the point of view of the system operators, wind farms were viewed as negative load with a magnitude and characteristic that were unpredictable. Their existence was tolerable during normal day-to-day operation, but if anything went wrong on the system such as a major fault or loss of a significant power circuit, it was expected that the wind farms would trip off line. With the unpredictable and poorly understood wind turbines out of the way, the operators could address emergency situations without the uncertainty surrounding the new equipment. Today, wind generation makes up significant portions of many power grids and it is no longer possible or practical to view wind power as trivial or expendable. Tripping a wind farm in response to a nearby fault is now considered a double contingency, not an acceptable first step in correcting the problem. Power system operators perception of wind farms has dramatically shifted to the point where wind farms are expected to have similar characteristics and capabilities as more conventional generation sources. Wind farms are expected to provide reactive power support, regulate system voltage, ride through transient events, and improve (or at least avoid degrading) the stability of the greater power grid.

   Grid Compliance Conditioning of Renewable Power Sources by Means of Modern Power Electronics
By ZINGEL Reinhard [View]
[Download]

Abstract: Grid code compliance conditioning of renewable power sources can effectively be countered by modern power electronics. Conventional power electronics have their merits, e.g. lower losses, but fall short when it comes to active grid support during voltage dips due to power system faults. Focus is attended to self-commutated, modular IGBT-inverters which have been applied for control ranges up to 40 Mvar (20 Mvar). If these 4-quadrant IGBT-inverters are equipped with batteries in the DC-link, they also can be applied to counter effects caused by real power.

   Wind Farm Flexible AC Transmission Systems
By DE PREVILLE Guillaume; ASKAR Jean-Sayed [View]
[Download]

Abstract: Industrial Session: Wind Farm Flexible AC Transmission Systems

   STATCOM Utility-Connected Power Electronic Compensator
By WERNLI Jonas; MAIBACH Philippe [View]
[Download]

Abstract: Industrial Session: STATCOM: Utility-Connected Power Electronic Compensator

EPE 2007 - Workshop: Industrial session of the joint EPE and IEEE Wind day (EPE Chapter on Wind Energy and joint IAS/PELS/IES Danish and German Chapters)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Workshop: Industrial session of the joint EPE and IEEE Wind day (EPE Chapter on Wind Energy and joint IAS/PELS/IES Danish and German Chapters)
	[return to parent folder]

	Utility-Connected Power Electronic Compensators in Wind Power Applications By KEHRLI Bud; ROSS Michael	[View] [Download]
Abstract: Wind farm installations can often generate unique challenges and problems for developers, owners and wind turbine manufacturers, particularly as they consider issues relating to transmission access. Major concerns and challenges that they face are typically associated with voltage regulation, low voltage ride through, system stability and aspects of potential turbine damage and maintenance. Furthermore, in many countries the performance requirements are becoming stricter for wind turbines that are interconnected to the greater power grid. Early on, when with turbine installations made up far less than 1\% of a regions power generating capability, wind farms were often viewed as science experiments with unknown operating and performance characteristics. Because of the small size of these early installations, their impact on the greater power grid was considered insignificant. From the point of view of the system operators, wind farms were viewed as negative load with a magnitude and characteristic that were unpredictable. Their existence was tolerable during normal day-to-day operation, but if anything went wrong on the system such as a major fault or loss of a significant power circuit, it was expected that the wind farms would trip off line. With the unpredictable and poorly understood wind turbines out of the way, the operators could address emergency situations without the uncertainty surrounding the new equipment. Today, wind generation makes up significant portions of many power grids and it is no longer possible or practical to view wind power as trivial or expendable. Tripping a wind farm in response to a nearby fault is now considered a double contingency, not an acceptable first step in correcting the problem. Power system operators perception of wind farms has dramatically shifted to the point where wind farms are expected to have similar characteristics and capabilities as more conventional generation sources. Wind farms are expected to provide reactive power support, regulate system voltage, ride through transient events, and improve (or at least avoid degrading) the stability of the greater power grid.

	Grid Compliance Conditioning of Renewable Power Sources by Means of Modern Power Electronics By ZINGEL Reinhard	[View] [Download]
Abstract: Grid code compliance conditioning of renewable power sources can effectively be countered by modern power electronics. Conventional power electronics have their merits, e.g. lower losses, but fall short when it comes to active grid support during voltage dips due to power system faults. Focus is attended to self-commutated, modular IGBT-inverters which have been applied for control ranges up to 40 Mvar (20 Mvar). If these 4-quadrant IGBT-inverters are equipped with batteries in the DC-link, they also can be applied to counter effects caused by real power.

	Wind Farm Flexible AC Transmission Systems By DE PREVILLE Guillaume; ASKAR Jean-Sayed	[View] [Download]
Abstract: Industrial Session: Wind Farm Flexible AC Transmission Systems

	STATCOM Utility-Connected Power Electronic Compensator By WERNLI Jonas; MAIBACH Philippe	[View] [Download]
Abstract: Industrial Session: STATCOM: Utility-Connected Power Electronic Compensator