Method and system for breather health assessment for a transformer breather
AssigneeHitachi Energy Ltd
InventorsStephane Isler, Christophe Benz
Life of this patent
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Abstract
Techniques for assessing a health of a transformer breather are provided. The transformer breather contains a desiccant and is in fluid communication with an expansion tank of a fluid-insulated transformer. A weight measurement that is dependent on a weight of the transformer breather or of a component or sub-assembly thereof is processed 7 assess the health of the transformer breather.
Claims20
A method of performing a breather health assessment for a transformer breather, wherein the transformer breather contains a desiccant and is in fluid communication with an expansion tank of a fluid-insulated transformer, in particular of an oil-insulated transformer, the method comprising:
- receiving a weight measurement, the weight measurement being dependent on a weight of the transformer breather or of a component or sub-assembly of the transformer breather comprising at least part of the desiccant;
- and
- processing the weight measurement to assess the breather health of the transformer breather,
- wherein the method further comprises determining whether the transformer is moving and/or the transformer breather is experiencing vibrations, and one of:
- causing actuation of a mechanical lock for a weight sensor when the transformer is moving or the transformer breather is experiencing vibrations;
- discarding the weight measurement captured while the transformer is moving or the transformer breather is experiencing vibrations;
- obtaining the weight measurement selectively only when the transformer is not moving or the transformer breather is not experiencing vibrations.
A system for performing a breather health assessment for a transformer breather, wherein the transformer breather contains a desiccant and is in fluid communication with an expansion tank of a fluid-insulated transformer, in particular an oil-insulated transformer, the system comprising:
- an interface adapted to receive a weight measurement, the weight measurement being dependent on a weight of the transformer breather or of a component or sub-assembly of the transformer breather comprising at least part of the desiccant;
- and
- at least one integrated circuit adapted to process the weight measurement to assess the breather health of the transformer breather;
- wherein the system is adapted to determine whether the transformer is moving and/or the transformer breather is experiencing vibrations, and at least one of:
- cause actuation of a mechanical lock for a weight sensor when the transformer is moving or the transformer breather is experiencing vibrations;
- discard the weight measurement captured while the transformer is moving or the transformer breather is experiencing vibrations;
- obtain the weight measurement selectively only when the transformer is not moving or the transformer breather is not experiencing vibrations.
Dependencies are inferred from the claim text.