Search - Number 18 - ANALYSIS OF SERVICE EXPERIENCE OF ORC-417000/750 MAIN UNIT TRANSFORMERS OF NPS UNITS OF UKRAINE

ANALYSIS OF SERVICE EXPERIENCE OF ORC-417000/750 MAIN UNIT TRANSFORMERS OF NPS UNITS OF UKRAINE
Cover not present ANALYSIS OF SERVICE EXPERIENCE OF ORC-417000/750  MAIN UNIT TRANSFORMERS OF NPS UNITS OF UKRAINE
Category: Number 18
Publication: 18
Summary

Statistics, design- and technological characteristics of main transformers of NPS units were compiled and analyzed. An algorithm for estimation of the unit transformer state was developed. Reasons of unit trans-former failures resulting in forced outage of the units were found. Sensitive zones and probable factors of degradation of electromagnetic, electric insulation and mechanical systems, as well as areas of extreme heat generation were revealed. Methods of monitoring systems, systems of safety and diagnostics of the assembly units being analyzed are italicized in the paper.

Keywords: transformers, insulation, windings, tank, oil, shunts.

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