Technical brochure
TB 836 WG C4.45

Measuring techniques and characteristics of fast and very fast transient overvoltages in substations and converter stations

In recent decades, the application of new power equipment and transmission technologies in power systems has made power girds much more complex than before. As a consequence, power equipment insulation systems are exposed to transient voltages with increasingly shorter rise-times and thus higher frequency components.

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System technical performance

This Technical Brochure has been created by a Working Group from the CIGRE System technical performance Study Committee which is one of CIGRE's 16 domains of work.
The scope of SC C4 covers system technical performance phenomena that range from nanoseconds to many hours. SC C4 has been engaged in the following topics: Power Quality, EMC/EMI, Electromagnetic Transients and Insulation Coordination, Lightning, Power Systems Dynamics Performance, and Numerical Analysis. Study Committee C4 deals with methods and tools for analysis related to the technical performance of power systems, with particular reference to dynamic and transient conditions and to the interaction between the power system and its apparatus/sub-systems, between the power system and external causes of stress and between the power system and other installations.

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