Solar & Wind Energy

Georg Erdmann [Chair]

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Professor, Berlin University of Technology

Bo Normark

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Chairman Annex 6 Power T&D; Systems, ISGAN

Abstract:

The electricity system is undergoing a dramatic change with increasing penetration of renewable energy. Many countries are targeting a 100% renewable energy system.
The transmission system has traditionally played a key role for developing renewable energy. The traditional role is to transmit large scale remote hydro power to consumption centers. In the modern electricity system, the role is increasingly to also integrate wind power and solar power.
Advanced smart and strong transmission technologies including HVDC and FACTS are instrumental to enable large scale integration of renewable production. Both HVDC and FACTS technologies has demonstrated a dramatic performance increase in terms of transmission capacity and improved system performance.
The technological development and typical examples will be highlighted.

Johannes Henkel

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Head of Energy Market Development, Energy Economics, 50 Hertz Transmission GmbH

Abstract:

Grid operation with increased renewables and roles of power conversion technologies

50Hertz Transmission is one of the four German TSOs and has the highest share of renewable generation in its grid (49% in 2015). As the majority of RES installations are wind and solar based, the feed-in is not controllable and can only be reliably forecasted few hours before physical delivery. Additionally, this generation does not take place where large electricity demand occurs, but it has to be transported to the load centres. Both have led to increasing congestion in the grid and therefore necessary redispatch measures and so have strong impacts on grid operation. In the WindNODE project, elements of new processes for grid operation will be developed. Core idea is the inclusion of more decentralised generation units as well as flexible consumers for an optimal grid operation. Additionally, new technologies like PSTs and HVDC will be applied in order to better control power flows in the grid.

Yoshiro Owadano

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Director-General, Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology(AIST)

Abstract:

Current situation of renewables integration in Japan and the role of power conversion technologies

To Japanese power gird, 38GW renewables (except large hydro) have been connected, and PV is dominant in the renewables. In order to mitigate intermittency of outputs from renewables, various measures are to be taken. They are increased grid interconnection between power utility areas (large scale DC link, 50-60Hz conversion station), full use of existing pumped hydro stations, output control of PV and wind power (advanced inverter/converter), internal storage and demand control etc. Power conversion is a common key technology in these measures and progressing rapidly in both performance and scale.

Atsushi Nishioka

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Energy Solution Business Unit, Hitachi, Ltd. (Chairman & CEO, Hitachi ABB HVDC Technologies, Ltd.)

Abstract:

In order to integrate more renewable energy in Japan, the power system needs more cross-regional interconnection capacity and more frequency regulation margin to maintain the stable operation of the grid. Among various solutions to this challenge, Hitachi has been involved in the power conversion technologies and its applications. This seminar explains about HVDC system, Battery Energy Storage system and Adjustable Speed Pumped Storage Hydro Power system, which apply power conversion technology, and how they work in the power system to enable large scale renewable energy integration. Hitachi group contributes to build a greener power system, using these power conversion technologies and applications.