EDS - Expert Diagnostic System - is an Overall Condition Monitoring System designed to monitor the main substation assets: current transformer, voltage transformer, power transformers, circuit breakers, surge arresters and GIS switchgear, which integrates all the real time conditions from all relevant substation assets in a single system.
EDS provides in one solution the monitoring of several assets, according to the requirements of each distribution, transmission or generation application: Circuit Breakers (both AIS or GIS), Current Transformers, Voltage Transformers, Power Transformers (Bushing, Tap Changers, Tanks, Cooling System, DGA, alarms, etc), Surge Arresters, Batteries and other auxiliary assets, etc.
The EDS is easy to install and, once configured, operates continuously. EDS units are designed to operate reliably under extreme weather conditions and electrical interference found in normal substation operations. In particular:
EDS Condition Monitoring System is composed by several units; each one has dedicated electronic boards and sensors to perform the requested measurements. The units are connected together through a bidirectional fiber optical loop. The HV loop is normally separated from the MV ones.
A central unit collects all the data processed by the other Condition Monitor Units through the optical fiber. In many cases, one of the remote unit could also be parameterized as central unit, in this case it has a dual function: remote and central unit.
The configuration of the system could also be adapted by using slave units connected with remote units.
The system is usually composed by: