Company Affiliation
John is the Editor-in-Chief of Opus Publishing
Domain Knowledge
John Tengdin has had a long-term involvement with
substation and distribution automation. In 1975, as Manager of Product Planning for GE
protective relays, he began the pioneering PROBE project at Commonwealth Edison. In this
project, the first minicomputer in a substation gathered analog waveform and status data
at one-millisecond intervals, then used this digital data for all applications. In 1980,
he was a founder of GE’s Digital System Operation – dedicated to R&D for
digital substation protection, control, and monitoring. With leading utilities, he
conducted automation leadership groups to define requirements – STAR for
transmission, and FASAR for distribution. By 1983, these groups had established
fundamental functional requirements for substation and feeder automation. He was product
line manager for GE’s VHF radio load control business and the AMRAC III distribution
carrier products.
He has been an independent consultant since 1986, working in load
management, substation and distribution automation, and protective relaying. He was the
author of the protective relaying requirements in Electric Power Research Institute
Project RP3599 "Requirements Specification for Substation Integrated Protection,
Control, and Monitoring" and has worked on numerous substation automation projects.
Participation in International Standards Making
Organizations
John is very active in several international
standards-making organizations, study committees and trade groups.
 | John is a Life Senior Member of IEEE, a member of the Distribution Subcommittee of the
Power Engineering Society Transmission & Distribution Committee, a member of the
Substations Committee and the Power System Relaying Committee. He is an author/co-author
of many IEEE papers, tutorials, and public affairs documents, and five standards. He was
Vice Chairman of the Substations Committee Task Force C2TF1 that produced IEEE Standard
1379 for RTU – IED communications (DNP 3.0 and IEC 870-5-101). |
| John is a delegate from the Substations Committee to SCC36, a member of CIGRÉ TF34.01,
Chairman of Substations WG C3, Vice Chairman of PSRC WG H4, and a US delegate to
International Electrotechnical Commission Technical Committee 57 Working Group 12 which is
developing international standards for data communications in substations. |
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WiseOwl™
John T. Tengdin
