EPE Association: EPE 2015 - LS3d: Renewables in the grid

EPE 2015 - LS3d: Renewables in the grid
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 05: Renewable Energy Power Systems > EPE 2015 - LS3d: Renewables in the grid

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   Effect evaluation of Li-ion battery for regenerative energy utilization in traction power supply system
By Hitoshi HAYASHIYA [View]
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Abstract: Two Lithium ion battery systems have already installed at practical traction substations, HAIJIMA SS and OKEGAWA SS, to utilize regenerative energy in d.c. 1.5kV traction power supply system of East Japan Railway Company. In this paper, the effect of energy storage system for energy saving by making use of regenerative energy is evaluated in detail. According to our experiences, the annual effects of energy storage systems at HAIJIMA SS and OKEGAWA SS are 400MWh/year and 600 or 700MWh/year, respectively.

   Experience with primary reserve supplied from energy storage system
By Philip KJAER [View]
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Abstract: This paper presents practical experience obtained during the first years of operation of a 1.6MW/0.4MWh Li-ion battery energy storage system used for provision of frequency regulation and participation in the Western Denmark primary reserve market. The paper presents recorded performance during operation, identifies losses in main power conversion and auxiliary power supply, and proposes a battery charging strategy that allows compliance with the technical performance requirements from the TSO.

   Harmonic Current Pollution Source Determination in a Grid Connected Wind Farm
By Juriy PLOTKIN [View]
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Abstract: Wind power plants must comply with current harmonic injection limits, defined in the grid codes. Source of harmonic currents may however be also located within electric grid itself and not inside a wind farm. It may be of a crucial importance to determine the harmonic source location. A novel method for harmonic currents flow direction determination is proposed in this paper, which is based solely on their magnitude measurement. Practical tests on two wind farms confirm the effectiveness of this method.

   Wind Farm Contribution to Primary Frequency Control
By RAHMAT SURYANA [View]
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Abstract: This paper presents the network frequency controlled by wind farm without supporting from other conventional power plants. The wind farm which consists of several wind turbines with doubly fed induction generators are divided into two groups and coordinated by a wind farm control center. The first group of wind turbines implements the kinetic energy control method, which can support fast frequency control. The second group of wind turbines activates the pitch control method, which can support long time frequency control. Therefore, the frequency drop can be stopped immediately by several wind turbines exploiting the kinetic energy, and the long period of frequency recovery can be supported by other wind turbines implementing the pitch control method.

EPE 2015 - LS3d: Renewables in the grid
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 05: Renewable Energy Power Systems > EPE 2015 - LS3d: Renewables in the grid
	[return to parent folder]

	Effect evaluation of Li-ion battery for regenerative energy utilization in traction power supply system By Hitoshi HAYASHIYA	[View] [Download]
Abstract: Two Lithium ion battery systems have already installed at practical traction substations, HAIJIMA SS and OKEGAWA SS, to utilize regenerative energy in d.c. 1.5kV traction power supply system of East Japan Railway Company. In this paper, the effect of energy storage system for energy saving by making use of regenerative energy is evaluated in detail. According to our experiences, the annual effects of energy storage systems at HAIJIMA SS and OKEGAWA SS are 400MWh/year and 600 or 700MWh/year, respectively.

	Experience with primary reserve supplied from energy storage system By Philip KJAER	[View] [Download]
Abstract: This paper presents practical experience obtained during the first years of operation of a 1.6MW/0.4MWh Li-ion battery energy storage system used for provision of frequency regulation and participation in the Western Denmark primary reserve market. The paper presents recorded performance during operation, identifies losses in main power conversion and auxiliary power supply, and proposes a battery charging strategy that allows compliance with the technical performance requirements from the TSO.

	Harmonic Current Pollution Source Determination in a Grid Connected Wind Farm By Juriy PLOTKIN	[View] [Download]
Abstract: Wind power plants must comply with current harmonic injection limits, defined in the grid codes. Source of harmonic currents may however be also located within electric grid itself and not inside a wind farm. It may be of a crucial importance to determine the harmonic source location. A novel method for harmonic currents flow direction determination is proposed in this paper, which is based solely on their magnitude measurement. Practical tests on two wind farms confirm the effectiveness of this method.

	Wind Farm Contribution to Primary Frequency Control By RAHMAT SURYANA	[View] [Download]
Abstract: This paper presents the network frequency controlled by wind farm without supporting from other conventional power plants. The wind farm which consists of several wind turbines with doubly fed induction generators are divided into two groups and coordinated by a wind farm control center. The first group of wind turbines implements the kinetic energy control method, which can support fast frequency control. The second group of wind turbines activates the pitch control method, which can support long time frequency control. Therefore, the frequency drop can be stopped immediately by several wind turbines exploiting the kinetic energy, and the long period of frequency recovery can be supported by other wind turbines implementing the pitch control method.