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Annotation
Приведены результаты исследований состояния гирлянд фарфоровых изоляторов по характеристикам частичных разрядов. Разработана методика выявления гирлянд, содержащих дефектный изолятор, без отключения приложенного напряжения. Разработан новый метод оценки состояния фарфоровых изоляторов воздушных линий электропередачи напряжением 6/10 кВ и их гирлянд, основанный на анализе характеристик частичных разрядов.
A new method diagnostic of porcelain insulators of overhead lines with voltage is equal 6/10 kV based on the analysis of the partial discharges characteristics was developed. The value of the breakdown voltage obtained by the partial discharges method with 5% accuracy is in good correlation with the results obtained by traditional methods such as direct resistance measurement and others. Breakdown voltage were calculated for garlands without switching off the applied voltage. Developed technique can be useful from a practical point of view to identify insulators, containing the so-called "zero" insulators, the resistance of which is dozen times less than the resistance of defect-free insulators.
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