Distributed Electrical Sensing for Digital Substations

Author: Rannveig Loken, Norway

SC B5 organized the tutorial "Challenges and Solutions for the Maintenance of Fully Digital Substations" on Monday, 27th of August, during the Cigré session in Paris 2018:

  • Introduction - Klaus-Peter Brand (CH)
  • Part 1: Concepts and IEC 61850 modelling, Alexander Apostolov (US)
  • Part 2: Experience Feedback for Maintenance architectures and procedures, Volker Leitloff (FR)

The poster session for SC B5 took place on Tuesday 28th of August and gave an opportunity to authors of papers accepted for the CIGRE Session to discuss them with participants.

The following Preferential Subjects were discussed on Wednesday 29th of August, during the Cigre session in Paris 2018:

  • PS1 - Protection under system emergency conditions, Special reporter Prof. Nirmal-Kumar Nair (NZ)
  • PS2 - User experience and current practice with IEC 61850 process bus, Special reporter Prof. Ray Zhang (UK)

The General report from SC B5 with summary of all the papers for PS1 and PS2, questions related to the papers and summary of the discussions during the session was distributed in October 2018.

The Cigré Technical Council Award was given to Dr. Goda Nudelman (RU) during the opening of the SC B5 session.

SC B5 Distinguished Members Award was given to Massimo PETRINI (IT),  Nirmal NAIR (NZ), Andrei PODSHIVALIN (RU) and Mladen KEZUNOVIC (US).

During the closing of the SC B5 session, the outgoing Chairman Iony Patriota (BR) announced that the new Chair for SC B5 will be Rannveig Loken (NO). The new Secretary for SC B5 will be Richard Adams (UK) and the new Strategic Advisor for TG 53 will be Nirmal Nair.

During the Cigré Study Committee B5 (SC B5) meeting in Paris 2018, 3 new working groups were suggested. They will be sent for approval by the Technical Committee Chairman in November 2018.

The next SC B5 Colloquium will be held in Tromsø, Norway in the last week of June 2019. The following Preferential Subjects will be discussed:

  • PS1 - Leveraging PMU data for better Protection, Automation and Control Systems, Special Reporter: Rafael Fernandes (BR)
  • PS2 - Time in Protection Applications - Time sources and distribution Methods, Special Reporter: Dr. Yubo Yuan (CN)
  • PS3 - Future technologies for inter-substation communication, Migrating Digital, Teleprotection Chan-nels to Packet-Based Networks, Special Reporter: Dr. Fred Steinhauser (AT)

The latest Technical Brochure published as a cooperation between SC B4 and SC B5 is "Protection and local control of HVDC-grids." This Technical Brochure presents the principal design of HVDC meshed grid protection and local control systems. It describes the requirement on HVDC grid protection and control, system earthing schemes, short circuit phenomena, short circuit interruption and short circuit limiting methods, protection philosophies and functions. The guide includes the possible measurement methods and protection functions for HVDC grid protections, including fault location methods to minimize the repair time after a short circuit occurrence.

The brochures can be downloaded free of charge by CIGRE members from the e-Cigre web site and can be purchased by non-members.


Rannveig J. S. Loken received her Bachelor of Science in Micro electronics from Trondheim University College in 1990, and her Master of Science in Electric Power engineering from the Norwegian University of Science and Technology (NTNU) in 1992. She works in Statnett, the TSO of Norway, and has been the Head of Section for the Control and Protection system since 2007. In August 2018, she became the Chair of Cigre SC B5. Her special field of interest is protection and control for the transmission system.
She is currently the project manager in Statnett for a R&D project related to Digital substation. In addition, working in Cigre Working groups is of great interest - she is currently a member of WG B5.53.
Rannveig  is in the Advisory board of PAC world, Committee member of DPSP, and Member of the International Advisory Committee APAP.

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