Abstract: The present invention relates to a method for determining temperature information, or information related to temperature information, related to a static electric induction device assembly. The static electric induction device assembly having a vertical extension in a vertical direction. The method includes performing the following for at least a static electric induction device portion: determining a heat loss value, indicative of a heat loss for the static electric induction device portion, the static electric induction device portion having a vertical static electric induction device portion position in the vertical direction; determining a liquid temperature value, indicative of a temperature of a liquid in the vertical static electric induction device portion position, and determining a temperature, or information related to temperature information, of the static electric induction device portion using the liquid pressure difference, the heat loss value and the liquid temperature value.

Abstract: The disclosure provides a method for altering a digital model, the method including: providing the digital model of an electrical device based on boundary conditions of a setup of the electrical device; providing measurement data from a sensor detecting a physical aspect of the electrical device; and altering the digital model by processing the measurement data by a physics-informed neural network, PINN.

Abstract: A sialic electric induction system is provided. The static electric induction system includes a heat generating electric component; a dielectric cooling fluid; a cooling passage structure along the electric component; and a pump arrangement arranged to alternatingly be controlled in a first mode and in a second mode. In the first mode, the pump arrangement pumps the dielectric cooling fluid to be driven through the cooling passage structure in a forward direction to cool the electric component, and in the second mode, the pump arrangement pumps the dielectric cooling fluid to be driven through the cooling passage structure in a reverse direction, opposite to the forward direction, to cool the electric component. A method of controlling a static electric induction system is also provided.

Abstract: In one example, the static electric induction device includes: a heat-generating component which is subject to electric induction, and a duct system configured to lead a coolant along the heat-generating component, wherein the duct system includes a plurality of cross channels and at least two longitudinal channels, each one of the longitudinal channels is assigned to at least some of the cross channels and the assigned cross channels connect the respective longitudinal channels with each other, and the duct system further includes at least one flow obstruction located in at least one of the longitudinal channels, the flow obstruction is configured to allow flow of the coolant through it and locally narrows a cross-section of the respective longitudinal channel by at least 75%.

Abstract: A method for estimating a physical quantity of a static electric induction device assembly. The static electric induction device assembly comprises an enclosure, a static electric induction device and a fluid whereby the enclosure accommodates the static electric induction device and the fluid such that the static electric induction device is at least partially submerged into the fluid. The method comprising using measured physical property data obtained from a measurement assembly. The measured physical property data comprising information indicative of a physical property in each one of a plurality of different locations of the static electric induction device assembly as a function of time for a reference time range when the static electric induction device assembly is in a condition in which at least a portion of the static electric induction device influences the physical property during at least a portion of the reference time range.

Abstract: A method for obtaining an improved transformer design for a power plant, including the steps of defining one or more critical temperatures (?hwnormal, ?hwcontingency, ?h, ?o) in the operation of the transformer, determining a limit (?hw,maxnormal, ?hw,max contingency, ?h,max, ?o,max) for at least one of the critical temperatures and obtaining an adjusted design of the transformer by using a data set of transformer loading, the data set comprising the amount of time (H) at a specific load level (?) for a specific ambient temperature (?a). The method further includes the step of producing a transformer having the adjusted values of the design parameters (??hr, ??or, R, x, y) and/or using a transformer having the adjusted values of the design parameters (??hr, ??or, R, x, y) in the power plant.

Abstract: In one example, the static electric induction device includes: a heat-generating component which is subject to electric induction, and a duct system configured to lead a coolant along the heat-generating component, wherein the duct system includes a plurality of cross channels and at least two longitudinal channels, each one of the longitudinal channels is assigned to at least some of the cross channels and the assigned cross channels connect the respective longitudinal channels with each other, and the duct system further includes at least one flow obstruction located in at least one of the longitudinal channels, the flow obstruction is configured to allow flow of the coolant through it and locally narrows a cross-section of the respective longitudinal channel by at least 75%.

Abstract: A method for obtaining an improved transformer design for a power plant, including the steps of defining one or more critical temperatures (?hwnormal, ?hwcontingency, ?h, ?o) in the operation of the transformer, determining a limit (?hw,maxnormal, ?hw,maxcontingency, ?h,max?o,max) for at least one of the critical temperatures and obtaining an adjusted design of the transformer by using a data set of transformer loading, the data set comprising the amount of time (H) at a specific load level (?) for a specific ambient temperature (?a). The method further includes the step of producing a transformer having the adjusted values of the design parameters (??hr, ??or, R, x, y) and/or using a transformer having the adjusted values of the design parameters (??hr, ??or, R, x, y) in the power plant.

Abstract: An electric device includes a tank and a cable box connected to the tank, the tank and the cable box being filled with an insulating liquid electric connection system for connecting a power cable through the cable box to the tank and a current measuring device for measuring electric current in the electric connection system, wherein the current measuring device is located adjacent to a housing of the cable box.

Abstract: An electric device includes a tank and a cable box connected to the tank, the tank and the cable box being filled with an insulating liquid electric connection system for connecting a power cable through the cable box to the tank and a current measuring device for measuring electric current in the electric connection system, wherein the current measuring device is located adjacent to a housing of the cable box.

Abstract: Provided is a static electric induction arrangement including: a static electric induction device arranged in a static electric induction device tank; an accessory tank including at least one opening configured to receive an accessory therein; the static electric induction device tank and the accessory tank are intended to be filled with dielectric fluid and are connected via a fluid connection, an upper portion of a cross section of the fluid connection, is located at a first height, the arrangement comprises a heat exchanger connected to the device tank, the device tank includes an outlet that is arranged to lead the dielectric fluid to the heat exchanger and an inlet that is arranged to return the dielectric fluid from the heat exchanger.

Abstract: A subsea power module including: a tank having a tank wall provided with an outwardly protruding corrugation, a power device arranged in the tank, a dielectric liquid which fills the tank, for cooling the power device, a pump configured to circulate the dielectric liquid in the tank, wherein the pump has a pump inlet and a pump outlet, a duct arranged in the corrugation such that a chamber is formed between a tip of the corrugation and the duct, wherein the duct has a duct inlet connected to the pump outlet, and wherein the duct is provided with at least one duct outlet opening into the chamber, and a distancing structure configured to space apart an outer surface of the duct facing the tank wall and the tank wall in the corrugation, whereby gaps are formed between the duct and the tank wall in the corrugation, enabling dielectric liquid that has been discharged through the at least one duct outlet into the chamber to be squeezed out from the chamber and the corrugation, and flow towards the pump inlet.

Abstract: Provided is a static electric induction arrangement including: a static electric induction device arranged in a static electric induction device tank; an accessory tank including at least one opening configured to receive an accessory therein; the static electric induction device tank and the accessory tank are intended to be filled with dielectric fluid and are connected via a fluid connection, an upper portion of a cross section of the fluid connection, is located at a first height, the arrangement comprises a heat exchanger connected to the device tank, the device tank includes an outlet that is arranged to lead the dielectric fluid to the heat exchanger and an inlet that is arranged to return the dielectric fluid from the heat exchanger.

Abstract: A subsea power module including: a tank having a tank wall provided with an outwardly protruding corrugation, a power device arranged in the tank, a dielectric liquid which fills the tank, for cooling the power device, a pump configured to circulate the dielectric liquid in the tank, wherein the pump has a pump inlet and a pump outlet, a duct arranged in the corrugation such that a chamber is formed between a tip of the corrugation and the duct, wherein the duct has a duct inlet connected to the pump outlet, and wherein the duct is provided with at least one duct outlet opening into the chamber, and a distancing structure configured to space apart an outer surface of the duct facing the tank wall and the tank wall in the corrugation, whereby gaps are formed between the duct and the tank wall in the corrugation, enabling dielectric liquid that has been discharged through the at least one duct outlet into the chamber to be squeezed out from the chamber and the corrugation, and flow towards the pump inlet.

Abstract: A heat exchanging arrangement for a subsea electronic system, the heat exchanging arrangement including a wall section; a corrugation formed in the wall section, the corrugation having two generally opposing internal corrugation surfaces; and at least one heat exchanging element forced against at least one of the internal corrugation surfaces. A subsea electronic system including a heat exchanging arrangement is also provided.

Abstract: A sialic electric induction system is provided. The static electric induction system includes a heat generating electric component; a dielectric cooling fluid; a cooling passage structure along the electric component; and a pump arrangement arranged to alternatingly be controlled in a first mode and in a second mode. In the first mode, the pump arrangement pumps the dielectric cooling fluid to be driven through the cooling passage structure in a forward direction to cool the electric component, and in the second mode, the pump arrangement pumps the dielectric cooling fluid to be driven through the cooling passage structure in a reverse direction, opposite to the forward direction, to cool the electric component. A method of controlling a static electric induction system is also provided.

Abstract: A heat exchanging arrangement for a subsea electronic system, the heat exchanging arrangement including: at least one pipe having an external surface; and at least one heat exchanging element arranged inside the at least one pipe and defining at least one internal passage for conducting a dielectric fluid through the at least one pipe; wherein the at least one heat exchanging element is arranged to press laterally outwards against an internal surface of the at least one pipe to establish a heat transfer bond between the at least one heat exchanging element and the at least one pipe. A subsea electronic system including the heat exchanging arrangement is also provided.

Abstract: A high voltage system including: a high voltage bushing having a bushing body configured to be assembled with a tank filled with a dielectric liquid wherein the bushing body has a cavity, and the bushing includes a dielectric liquid level sensor configured to measure a dielectric liquid level in the cavity, and a temperature distribution determining device configured to determine a heat distribution in the bushing based on the dielectric liquid level measured by the dielectric liquid level sensor.

Abstract: A high voltage system including: a high voltage bushing having a bushing body configured to be assembled with a tank filled with a dielectric liquid wherein the bushing body has a cavity, and the bushing includes a dielectric liquid level sensor configured to measure a dielectric liquid level in the cavity, and a temperature distribution determining device configured to determine a heat distribution in the bushing based on the dielectric liquid level measured by the dielectric liquid level sensor.

Abstract: A cooling system for a high voltage electromagnetic induction device, includes: at least one duct filled with a first coolant and surrounded by a second coolant, each being routed along a direction of natural convection; at least one group of fans, each fan of the group being mounted along a respective duct of the at least one duct along the direction of natural convection and being configured to blow for the-second-coolant-forced cooling; at least one group of electric motors, each electric motor being configured to operate a respective fan of the at least one group of fans; at least one group of switches, each switch being configured to control a respective electric motor of the at least one group of electric motors. A method of cooling a high voltage electromagnetic induction device is also provided. By using the option of operating fans with higher cooling rate, because of the less fans are operating, the predetermined cooling capacity can be reached with lower power consumption.