Condition monitoring and dynamic Health Index in electrical grids

Modern asset management needs to be guided through the various techniques and diagnostic tools available to assess condition of electrical apparatus. One way is to made available what is called Health Index, HI, for each electrical apparatus of an asset. If permanent condition monitoring is chosen as the most effective approach to oversight aging and performance of an electrical apparatus, the HI is available as a function of time, so that maintenance can be done at the proper time to match at best cost and reliability needs of the asset. This paper has the aim of discussing such topic, providing the definition of dynamic health index (DHI) and showing examples of application.