Recent Trends in the Condition Monitoring of Transformers

This comparative guide to non-invasive methods of monitoring the condition of transformers explains how to choose the best technique for a range of scenarios. It shows how new analytical procedures can reduce the costs incurred by transformer down time.

Recent Trends in the Condition Monitoring of Transformers reflects the current interest in replacing traditional techniques used in power transformer condition monitoring with non-invasive measures such as polarization/depolarization current measurement, recovery voltage measurement, frequency domain spectroscopy and frequency response analysis. The book stresses the importance of scrutinizing the condition of transformer insulation which may fail under present day conditions of intensive use with the resulting degradation of dielectric properties causing functional failure of the transformer.

The text shows the reader how to overcome the key challenges facing today's maintenance policies, namely:

The selection of appropriate techniques for dealing with each type of failure process accounting for the needs of plant owners, plant users and wider society; and

Cost-efficiency and durability of effect.

Many of the failure-management methods presented rely on the fact that most failures give warning when they are imminent. These potential failures give rise to identifiable physical conditions and the novel approaches described detect them so that action can be taken to avoid degeneration into full-blown functional failure. This on-condition maintenance means that equipment can be left in service as long as a specified set of performance standards continue to be met, avoiding the costly downtime imposed by routine and perhaps unnecessary maintenance but without risking equally expensive failure.

Recent Trends in the Condition Monitoring of Transformers will be of considerable interest to both academic researchers in power systems and to engineers working in the power generation and distribution industry showing how new and more efficient methods of fault diagnosis and condition management can increase transformer efficiency and cut costs.

Shows the reader how to foresee and prevent incipient transformer failure Uses non-invasive methods that minimise transformer down-time and therefore cost Comparative approach shows the reader how to choose the most effective method of those described Includes supplementary material: sn.pub/extras

Contenu

Impulse Fault Analysis.- Partial Discharge Measurement and Analysis.- Conventional Diagnostic Techniques.- Time Domain Dielectric Response Measurements.- Frequency Domain Spectroscopy.- Frequency Response Analysis.- Remaining Life Analysis.