Condition Assessment for Power Transformer Using Health Index

Condition assessment of power transformer using gas detection methods

This article deals with the gases dissolved in oil generated during the power transformer operation. The attention is paid to the production of gases typical for particular failures. The most powerful and widely used diagnostic tool for investigation faults and their root causes is dissolved gas-in-oil analysis DGA. Hydran sensor is one of the most used sensors applied for on-line monitoring of...

Assessment and Measurement of Fiscal Condition Index for Iran

This paper presents a framework for assessing the fiscal condition index (FCI) and develops a concept to assess fiscal condition of governments and implements it into Iran government as an oil exporting country. The concept consists of four dimensions ­-revenue, expenditure, budget balance, and debt structure-and each dimension has its own indicators. There are seven indicators examined namely ...

Estimating the Transformer Health Index Using Artificial Intelligence Techniques

Condition and risk assessment of power transformers: a general approach to calculate a Health Index

Power transformers are the most important assets in substations and play an important role in the reliability of electrical systems and in the quality of the energy delivered. As the population of transformers in service is getting old, much attention must be focused on transformers availability and reliability. So the condition and risk assessment of the transformers are more and more importan...

Flexible Power Electronic Transformer for Power Flow Control Applications

This paper proposes a Flexible Power Electronic Transformer (FPET) for the application in the micro-grids. The low frequency transformer is usually used at the Point of Common Coupling (PCC) to connect the low voltage grid and utility network to each other. The conventional 50Hz transformer results in enhanced low voltage-grid power management system during grid-connected operation. In this pap...