Dissolved Gas Analysis (DGA), initially developed for the monitoring of transformers, was recently introduced for in-service diagnostics of power cables. Criteria successfully developed for transformers are not readily applicable to cables because of significant differences in the design and operating characteristics of both systems. The diagnostic of a given cable circuit is based on the voltage rating, the individual gas concentration levels, the key gas ratios, the gas formation trends, the years in service, and the load. A new graphical representation of the IEC 599 method for the interpretation of gas ratios was developed in view of its application to power cable diagnostics. This new method, also applicable to transformers, solves most of the undetermined diagnostics given by the IEC method. The whole DGA diagnostic procedure logic is coded in an expert system shell automating the final diagnostic on the condition of the cable insulation.
EuroMaTech’s Dissolved Gas Analysis online training course is intended to familiarize the participants with the components of the distribution and transformer systems, and the way in which the system delivers power to customers. Included in the course are descriptions of key system components including single and three phase lines as well as wye and delta lines. The course also addresses the state-of-the-art dissolve gas analysis for transformers available today, and it also includes the non-mineral oil filled transformers. All tests related to Dissolved Gas Analysis (DGA) of Transformers and Oil-Filled Cables will be covered in this training course.
Delegates attending EuroMaTech’s online Dissolved Gas Analysis training course will develop the following competencies:
- Understand the importance of oil filled power transformers
- Awareness of the characteristics of mineral oil in transformers
- Comprehend dissolved gas analysis for transformer
- Exposed to the construction of oil filled cables
- Determine dissolve gas analysis for the oil filled cables