Energy utilities need on-site AC high-voltage acceptance tests on their cable systems and switchgear, in order to ensure the quality of their transmission systems; such tests need to be performed on site with special equipment as well as remarkable measurement technology and diagnosis at voltages of up to 500 kV. Complete acceptance tests such as […]
The future began in Gotland in 1950. It is here, between this island 90 kilometers off the coast of Sweden and the mainland, that the first direct current connection for the transmission of electricity was made. Though limited in size and power, the project has had enormous resonance. In fact, the prototype developed by ABB […]
Transmission adequacy problems versus electrical growing consumptions, control and protection technological ageing, unpredictable renewable sources penetration, unbundling and market distortion effects, lack of coordination between system operators… are just examples of possible root causes which led to partial or total blackouts in recent years worldwide. USA and European large disturbances on 2003 and 2005, as […]