Abstract: A semiconductor memory device includes a third insulating pattern and a first insulating pattern on a substrate, the third insulating pattern and the first insulating pattern being spaced apart from each other in a first direction that is perpendicular to the substrate such that a bottom surface of the third insulating pattern and a top surface of the first insulating pattern face each other, a gate electrode between the bottom surface of the third insulating pattern and the top surface of the first insulating pattern, and including a first side extending between the bottom surface of the third insulating pattern and the top surface of the first insulating pattern, and a second insulating pattern that protrudes from the first side of the gate electrode by a second width in a second direction, the second direction being different from the first direction.

Abstract: Proposed is a multi-sensor assembly, and the assembly of the present disclosure includes: a first sensor provided in a sensor coupling unit positioned at a front end of a housing; a second sensor provided in a mounting groove that is open toward a front surface of the first sensor; a first connector member configured to transmit a signal measured by the first sensor and, simultaneously, to firmly fix the first sensor to the sensor coupling unit; and a second connector member screw portion formed on an outer surface of a rear end of the first connector member so as to be coupled to a fixture screw portion of an adjustable fixture provided at a rear end of the housing, thereby moving relatively thereto.

Abstract: A battery fire prevention and diagnosis system in accordance with the present invention comprises: an ultra-high frequency (UHF) sensor for measuring radiated electromagnetic wave installed inside or outside a battery system; a data acquiring unit for receiving the radiated electromagnetic wave signals measured from the UHF sensor; noise/defect cause database including on-site noise data related to a site in operation, and data on causes of defects; and a diagnosis unit for determining abnormality of the battery system, and a cause of a defect based on the radiated electromagnetic wave signal data acquired from the data acquiring unit, and the on-site noise data and the data on causes of defects in the noise/defect cause database.

Abstract: A battery fire prevention and diagnosis system in accordance with the present invention comprises: a high frequency current transformer (HFCT) installed to at least one of a ground wire, a positive wire, or a negative wire of a battery system; a data acquiring unit for receiving high frequency current signals measured from the HFCT; noise/defect cause database including on-site noise data related to a site in operation, and data on causes of defects; and a diagnosis unit for determining abnormality of the battery system, and a cause of a defect based on high frequency signal data acquired from the data acquiring unit, and the on-site noise data and the data on causes of defects in the noise/defect cause database.

Abstract: An asset management method for a substation in accordance with an example embodiment of the present invention comprises steps of: generating integrity of each element of the substation based on state data and real-time monitoring data of the each element of the substation; classifying grade of the each element of the substation depending on the generated integrity thereof, and matching the each element of the substation with one of life models for each classified grade; specifying a candidate element subject to maintenance in a certain order of priority, assessing system reliability index and economic feasibility, and selecting a maintenance scenario for the each candidate element subject to maintenance; and executing maintenance by using the selected maintenance scenario, and updating assessment of the integrity of the each element of the substation as a result of the maintenance executed.

Abstract: An asset management method for a substation in accordance with the present invention generates a unique reliability model for each element of the substation by comparing reliability of a reference reliability model for each substation type with a health index of the each element thereof generated based on state data and real-time monitoring data of the each element of the substation and compensating the reference reliability model for the each element of the substation; assessing system reliability index and economic feasibility for each maintenance scenario based on a reference system reliability model for each candidate element subject to maintenance among the elements of the substation; selecting a maintenance scenario as a result of the health index and the unique reliability model for the each element of the substation, the system reliability index, and the economic feasibility and updating the unique reliability model for the each element of the substation by executing maintenance.

Abstract: A substation asset management method can include the steps of: determining whether to compensate a reliability model by element of the substation by comparing reliability of a reference reliability model by substation type with reliability depending on health index by element thereof generated based on state data and real-time monitoring data by element of the substation; compensating the reference reliability model by substation type and generating a unique reliability model by element of the substation as a result of the determination; evaluating system reliability and economic feasibility by maintenance scenario based on a reference system reliability model for each candidate element subject to maintenance among the elements of the substation; and drawing a maintenance scenario of the elements of the substation by using a fitness function of maintaining the substation based on the result drawn through the evaluation of the system reliability and the economic feasibility.

Abstract: Proposed is a multi-sensor assembly, and the assembly of the present disclosure includes: a first sensor provided in a sensor coupling unit positioned at a front end of a housing; a second sensor provided in a mounting groove that is open toward a front surface of the first sensor; a first connector member configured to transmit a signal measured by the first sensor and, simultaneously, to firmly fix the first sensor to the sensor coupling unit; and a second connector member screw portion formed on an outer surface of a rear end of the first connector member so as to be coupled to a fixture screw portion of an adjustable fixture provided at a rear end of the housing, thereby moving relatively thereto.

Abstract: An asset management method for a substation includes deriving an optimal management plan by each element of the substation depending on integrity of the each element of the substation and deriving an optimal unique reliability model for each element of the substation through a process of compensating a reference reliability model of each substation type and an apparatus executing the method.

Abstract: An apparatus for detecting internal defects in a transformer is provided. The apparatus detecting internal defects that arise in the interior by integrating an electrode for electrically detecting defects and a sensor for detecting internal gas into a single body and inserting same into the interior. The apparatus for detecting internal defects in a transformer according to the present invention comprises: a metal member of a set length; a plurality of electrodes, disposed around the metal member, for detecting electrical signals generated due to internal defects of the transformer; an insulating member formed so as to contain the metal member and plurality of electrodes; and a gas sensor, installed at the end of the metal member, for detecting gas inside the transformer.

Abstract: A substation asset management method can include the steps of: determining whether to compensate a reliability model by element of the substation by comparing reliability of a reference reliability model by substation type with reliability depending on health index by element thereof generated based on state data and real-time monitoring data by element of the substation; compensating the reference reliability model by substation type and generating a unique reliability model by element of the substation as a result of the determination; evaluating system reliability and economic feasibility by maintenance scenario based on a reference system reliability model for each candidate element subject to maintenance among the elements of the substation; and drawing a maintenance scenario of the elements of the substation by using a fitness function of maintaining the substation based on the result drawn through the evaluation of the system reliability and the economic feasibility.

Abstract: A method for asset management of power equipment compensates a reference reliability model by each sub-device of the power equipment and generate a unique reliability model by the each sub-device by comparing reliability of the reference reliability model by the each sub-device and the health index by the each sub-device; assesses priorities based on equipment sensitivity and establishes a maintenance strategy while analyzing reliability by substation system reliability and reliability by economic value; calculates reliability of the power equipment by applying a system relationship model between the power equipment and the each sub-device to which specific weight and failure rate are reflected; selects a maintenance scenario by a predetermined priority; and updates the reliability model for the power equipment and the unique reliability model by the each sub-device as a result of executing maintenance.

Abstract: An apparatus for detecting internal defects in a transformer is provided. The apparatus detecting internal defects that arise in the interior by integrating an electrode for electrically detecting defects and a sensor for detecting internal gas into a single body and inserting same into the interior. The apparatus for detecting internal defects in a transformer according to the present invention comprises: a metal member of a set length; a plurality of electrodes, disposed around the metal member, for detecting electrical signals generated due to internal defects of the transformer; an insulating member formed so as to contain the metal member and plurality of electrodes; and a gas sensor, installed at the end of the metal member, for detecting gas inside the transformer.

Abstract: An asset management method for a substation generates a unique reliability model by each element of the substation by comparing reliability by a reference reliability model by each substation type with health index by the each element thereof generated based on state data and real-time monitoring data by the each element of the substation and compensating the reference reliability model by the each element of the substation; assessing system reliability index and economic feasibility by each maintenance scenario based on a reference system reliability model for each candidate element subject to maintenance among the elements of the substation; selecting a maintenance scenario as a result of the health index and the unique reliability model by the each element of the substation, the system reliability index, and the economic feasibility and updating the unique reliability model by the each element of the substation by executing maintenance.

Abstract: An asset management method for a substation in accordance with an example embodiment of the present invention comprises steps of: determining whether to compensate a reliability model by each element of a substation by comparing reliability by a reference reliability model by each substation type with integrity by the each element thereof generated based on state data and real-time monitoring data by the each element of the substation; compensating the reference reliability model by each substation type and generating a unique reliability model by the each element of the substation by using the integrity by the each element of the substation depending on the result of the determination; assessing system reliability index and economic feasibility by each maintenance scenario based on a pre-generated reference system reliability model for each candidate element subject to maintenance among the elements of the substation; executing maintenance after selecting a maintenance scenario by the each candidate element

Abstract: A method for asset management of a substation includes: generating a unique reliability model by each element of the substation by compensating a reference reliability model by the each element of the substation in comparison of reliability by the reference reliability model by the each substation type with reliability based on health index by the each element thereof generated based on state data and real-time monitoring data by the each element of the substation; assessing system reliability index and economic feasibility by each maintenance scenario based on a reference system reliability model for each candidate element subject to maintenance among the elements of the substation; selecting a maintenance scenario as a result of the health index and the unique reliability model by the each element of the substation, the system reliability index, and the economic feasibility; and updating the unique reliability model by the each element of the substation by executing maintenance.

Abstract: The present invention relates to a device for detecting a partial discharge for a power transformer which detects an electromagnetic signal occurring due to faulty insulation. The device includes an antenna unit receiving electromagnetic waves, an insulator including the antenna unit, a metallic air-tight unit that seals a connector connected to the insulator and connecting a coaxial cable, and the coaxial cable exposed to the outside of the metallic air-tight unit. Thus, it is possible to enhance broadband properties through an internal conductor of a drain valve.

Abstract: Provided is a method of accurately detecting the location of a partial discharge in a power device. For this purpose, the present invention measures sequential positions of arrival of partial discharge signals and the differences in the time of arrival between the partial discharge signals with respect to a plurality of partial discharge sensors installed on the outside surface of a power device, divides the power device into a plurality of spatial sections, determines a spatial section where the location of a partial discharge is present using the sequential positions of arrival of the partial discharge signals, calculates the representative location value of the determined spatial section, and determines compensation values for the differences in the time of arrival to be applied with respect to the respective spatial sections.

Abstract: Provided is a partial discharge detection device for a transformer, and a transformer using the same. An on-load tap changer is provided on one side of the outer casing of a transformer, and is partitioned from the inside of the outer casing by a shielding wall. A drain pipe is formed on one side of the outer surface of the outer casing. A drain valve is installed in the drain pipe. A configuration for detecting a partial discharge signal generated within the transformer is installed in the drain pipe. That is, a detector body is installed within the drain pipe and the drain valve. A connection mounting member is installed in an end portion of the drain valve. The detector body penetrates the connection mounting member. In the meantime, a portion, such as the on-load tap changer, is partitioned from the internal space of the outer casing by the shielding wall.

Abstract: Provided is a partial discharge detection device for a transformer, and a transformer using the same. An on-load tap changer is provided on one side of the outer casing of a transformer, and is partitioned from the inside of the outer casing by a shielding wall. A drain pipe is formed on one side of the outer surface of the outer casing. A drain valve is installed in the drain pipe. A configuration for detecting a partial discharge signal generated within the transformer is installed in the drain pipe. That is, a detector body is installed within the drain pipe and the drain valve. A connection mounting member is installed in an end portion of the drain valve. The detector body penetrates the connection mounting member. In the meantime, a portion, such as the on-load tap changer, is partitioned from the internal space of the outer casing by the shielding wall.