Recent Technical Trend of Medium Voltage Switchgear

Dielectric Properties of Gases Suitable for Secondary Medium Voltage Switchgear

SF6 is the dominating technology for gas insulated switchgear due to its excellent dielectric, thermal and arc quenching properties. Unfortunately, SF6 suffers from a very high global warming potential (GWP). Even though medium voltage switchgear is sealed for life with less than 0.1% emissions per year, the EU has specifically targeted SF6 for replacement in medium voltage switchgear for secon...

Partial Discharge Pattern Recognition of Medium-Voltage Switchgear Based on Association Rules Mining

In the paper, a new partial discharge pattern recognition approach based on association rules mining is developed. Some statistical parameters are extracted from the sampled transient earth voltage data and classic Apriori algorithm is employed to mine the association rules between those parameters and the corresponding fault types. Moreover, using other experimental data obtained in the labora...

Development of Medium-voltage Switchgear for Reducing Environmental Impact and Space-saving

Kenji Tsuchiya Koichi Nagano Ayumu Morita Tetsuya Hirao OVERVIEW: To make medium-voltage switchgear (52 kV or less) smaller and more robust, there has been a shift away from AISs and toward GISs that use SF6 gas . However, the high global warming coefficient of SF6 gas means it was designated as a greenhouse gas by the Kyoto Protocol (Kyoto Protocol to the United Nations Framework Convention on...

Ultra-high-voltage switchgear to power China

New Concept of High-voltage Switchgear On-line Monitoring System

A new concept of a high-voltage switchgear on-line monitoring system (BMS Bay Monitoring System) is described. Main features and benefits of BMS are simple ethernet-based communication which means simple LAN connectivity with other systems in a switchgear, reliable data collection, reliable controller operation, reliable power supply, quick access to data and a quick and simple retrieval of sto...