The Next Generation Network (NGN) is an organisation for students and young professional engineers in the power industry to engage with CIGRE’s activities and develop their knowledge, skills and contacts within the industry.
in the South East European Region several National Comittees are complemented by NGNs.
The following countries host NGNs:
Lightning Phenomena & Transmission Network Transients
A joint technical Webinar organised by the Cigre NGN Sections of the United Kingdom and Austria
The Next Generation Network (NGN) seeks to facilitate a successful transition into the power systems industry for early-career professionals and students by providing technical resources and networking opportunities for personal and technical development. Two subject matter experts will present current research activities in the fields of lightning research and voltage transients in transmission networks.
Date: November 12th 2020, 14:00pm (UK time)
Lightning Phenomena in the Alpine Region of Austria – Lukas Schwalt
In the first part of this presentation, an introduction about thunderstorm formation and lightning physics will be given and secondly the key findings of Dr. Schwalt’s PhD thesis “Lightning Phenomena in the Alpine Region of Austria” will be presented. The motivation for the PhD thesis was to gather lightning ground truth data for Austria out of on-site measurements, because this area shows high lightning activity. For this purpose, real processes of cloud-to-ground flashes were recorded with a high-speed video camera and an electric field measurement system. Analyses of this exclusive data set provide insights about lightning characteristics in general and for the alpine region in particular.
Effect of Network Parameters on the Transient Over-Voltage Phenomenon During System Restoration – Diptargha Chakravorty
System restoration is currently a transmission-led approach of starting large conventional generators with self-start capability and energising a skeleton network. Increasingly, transmission connected fossil-fuelled generators are decommissioned around the world to meet the emissions targets. This makes it imperative to explore the possibility of using distribution connected DERs to support the whole system restoration. However, energisation of network elements such as circuits and transformers pose significant challenges such as switching transients, Temporary Over Voltage (TOV) etc which can reduce the available options to restore a network and lead to a higher number of circuit breaker switching to avoid damaging equipment. This presentation will discuss the impact of different network parameters such as the strength of the system, saturation characteristic of transformers etc on the TOV and ways to manage it during restoration.
International NGN Gettogether
On September 1st, 2020 the Austrian NGN organized its first online Gettogether. Numerous young and motivated NGNs worldwide presented their structure, activities and gained knowledges. This event was used to further establish and strengthen international contacts. The successful exchange motivated us to organize more events of this kind in the future, both on- and offline. These activities are intended to strengthen and promote worldwide cooperation and international exchange in the spirit of CIGRE.
- South Africa
- United Kingdom