Abstract:
The present invention provides monitoring and diagnosing of transformer health, wherein electrical current sensing elements (110, 130) and a dissolved gas analysis (DGA) apparatus (170) are coupled to the transformer (120) and to a diagnostic apparatus (175). The diagnostic apparatus (175) is configured to detect a through-fault in the transformer by executing an electrical current flow analysis based on electrical current values received from the electrical current sensing elements (110, 130). The diagnostic apparatus also uses DGA data provided by the DGA apparatus (170) to detect an abnormal gas-related condition in the transformer (120). A transformer health related signal and/or a control signal that is based on the transformer health data, is transmitted by the diagnostic apparatus (175).
Abstract:
Eine Vorrichtung (10) zum Vorbereiten einer Analyse von in einem Fluid gelöstem Gas umfasst eine Pumpe (20) mit einem Gehäuse (21) zum Fördern des Fluids, wobei im Inneren des Gehäuses (21) ein Probenraum (22) zum Entgasen des Fluids ausgebildet ist, um in dem Fluid gelöstes Gas in dem Probenraum (22) zu extrahieren, wobei die Pumpe (20) dazu eingerichtet ist, das Entgasen des Fluids in dem Probenraum (22) durchzuführen,und einen Reaktor (30),welcher dazu eingerichtet ist, eine physikalische Wechselwirkung in Abhängigkeit von dem extrahierten Gas herbeizuführen.
Abstract:
The present invention provides a method (100, 200) for obtaining failure prognostic information of electrical power equipment based on degradation of dielectric insulation fluid that is immersed in components of said power equipment that include electrical windings and tap-changers comprising a step (107) of computing a rate of change with respect to time of each of a plurality of sets of tertiary (106a, 106b, 106c) and secondary (105a, 105b, 105c) first order chromatic parameters obtained for a plurality of time instances and which have been grouped according to parameter type of insulation fluid degradation, such as "Dissolved Gas Analysis (DGA)", "Acidity, Water Content, Dielectric Strength (AWD)" and a step (108) of assigning scores to said plurality of sets of tertiary (106a, 106b, 106c) and secondary (105a. 105b, 105c) first order chromatic parameters at said plurality of time instances and the rate of change with respect to time of said sets of tertiary (106a, 106b, 106c) and secondary (105a, 105b, 105c) first order chromatic parameters.
Abstract:
A sensing system for detecting hydrogen in an insulation fluid (8) of an electrical device (10) is provided. The system comprises: a sensing element (15) which comprises an optically transparent substrate (20); a sensing layer (25) coated on the substrate, comprising a metal-comprising thin film which changes its transparency due to hydrogenation when exposed to a defined hydrogen concentration; a catalytic layer (30) adjacent to the sensing layer; and a permanent visual indicator (40) located adjacent to the substrate (20), such that the substrate is positioned in a line of sight between the permanent visual indicator (40) and an observer of the sensing system (1), such that the permanent visual indicator (40) becomes visible to an observer at a defined hydrogen concentration.
Abstract:
A hydrogen sensor (10, 100) for detecting hydrogen in a fluid (12) in physical contact with the sensor comprises a sensing element (21), a first protection layer (25), provided to prevent contact of the sensing element (21) with a sensor poisoning gas in the fluid (12), wherein the 5 first protection layer (25) comprises PMMA. Further, a hydrogen detection system, an electrical device having such a system and a method for producing a sensor are provided.
Abstract:
Eine Vorrichtung (1) zur Detektion von Gas (4) in einem mit einem Isoliermedium (2) gefüllten Hochspannungsgerät (3)umfasst einen Einlass (5) zum Einleiten und einen Auslass (6) zum Abführen eines Trägergases (16); wenigstens einen Gassensor(12) zur Detektion eines Gases (4); eine erste Pumpe (9) zum Befördern des Trägergases (16) in der Vorrichtung (1); eine Membran (13), die zumindest aus wenigstens einem semipermeablen Werkstoff besteht, zumindest teilweise von dem Isoliermedium (2) umgeben ist und zumindest teilweise von dem Trägergas (16) angeströmt wird; eine zweite Pumpe (10) zum Hineinbefördern des Trägergases (16) in die Vorrichtung (1) und zum Herausbefördern des Trägergases (16) aus der Vorrichtung(1); wobei kein Ventil vorhanden ist, durch das das Trägergas (16) in die Vorrichtung (1) hinein oder aus der Vorrichtung (1) heraus befördert werden kann.
Abstract:
The invention provides a housing for a sensor having a semiconductor element for measuring hydrogen concentration in an insulating fluid in electric power generation, transmission, and distribution equipment having a mounting flange on the equipment providing access to the interior of the equipment and provided with a plurality of bolt receiving openings arranged on the mounting flange in a first pattern, which includes a first flange having at least one or more openings for receiving one or more semiconductor hydrogen sensors and an outer periphery, a plurality of bolt receiving apertures arranged in a pattern corresponding to the first pattern within the outer periphery of the first flange, a second flange having a second plurality of bolt receiving apertures arranged in a pattern corresponding to the first pattern within the periphery of the second flange.
Abstract:
A sensor assembly for measuring hydrogen concentration in an insulating fluid via a temperature well that has a tubular portion extending into the equipment and having a movable valve at its end. The tubular portion includes a flange, a tubular housing member attached to the flange having one end adapted to be telescopically received in the temperature well. The tubular portion includes a housing having one end connected to the tubular housing member having a substantially uniform cross section wherein at least one wire receiving opening extends through the housing body. A cover closes an end of the housing body. A seal is disposed between the tubular housing member and the tubular portion of the temperature well. The tubular housing member is long enough so that when fully extended into the temperature well, the tubular housing causes the movable valve to open.