18 . 02 . 2019
Gerd Heidmann
-
Transparent Fluorescent Silicones
Characterization of Transparent Fluorescent Silicones for Optical Monitoring of High-Voltage Cable AccessoriesThe mechanical and electrical properties of new transparent silicone materials modified with two fluorescent dyes were investigated by measuring stress-strain behaviour, electrical breakdown strength, capacity and dissipation factor, before and after thermal ageing, as well as electrical and optical partial discharges. Mechanical properties of […]
21 . 01 . 2019
Wolfgang Manzke
-
Technical design requirements and test experiences on Composite Hollow Core Insulators regarding pollution performance under AC and DC stress
This paper is a common approach of manufacturers of insulators, electrical equipment, transmission system and test labs to verify the expected behaviour in laboratory and outdoor tests. For the electrical design of composite insulators, different material properties and shed profiles for AC and DC conditions have to be taken into account respectively, considering the recommendations […]
08 . 01 . 2019
Aaron Snyder
-
The Resiliency Continuum
Storm damage can wreak havoc on the electrical distribution system and instantaneously create a major impact on those who continuously depend on unfettered access to electrical energy. “Keeping the lights on” is a bedrock principle of utility operations, but is increasingly being challenged by more frequent and turbulent natural disasters. The quest for greater utility […]
31 . 10 . 2018
Alessandro Bertani
-
Ferroresonance in Inductive Voltage Transformers Or Power Voltage Transformers: analysis, laboratory tests and solutions
A ferroresonance analysis related to HV Inductive Voltage Transformers (IVT) and power Voltage Transformers or Station Service Transformers (PVT/SST) was addressed to develop models based on EMT formulation, enabling detailed ferroresonance risk analyses in specific HV station conditions and helping in the equipment technical specifications (including anti-ferroresonance remedial provisions). The research relied on a comparison […]
16 . 04 . 2015
Uberto Vercellotti
-
Safety issues in case of internal arc on HV cable terminations, bushings
Worldwide demand for new T&D networks will increase in the near future pushing the utilities to install a larger number of high voltage equipment like cable terminations, bushings and surge arresters. Meanwhile the attention to environmental and safety issues is generally increasing . The aim of this paper is to analyze the potential risks associated […]
06 . 02 . 2014
Giacomo Chiarini
-
Certification of recharging stations for electric vehicles
The evaluation of conformity of electric products has for years now been a warranty element in the market. Certifying Bodies work in a consolidated way and are acknowledged by national and international reference organizations. The arrival of new products in the market, in particular those for which wide diffusion and usability by the public is […]