# US 2021/0241971 A1 · Sensformer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0241971 A1 - Document ID: US20210241971A1 - Status: Published application - Kind: A1 - Application number: 17/049,085 - Filed: 2018-04-20 - Published: 2021-08-05 - Earliest claimed: 2018-04-20 - Assignees: Siemens Aktiengesellschaft - Applicants: Siemens Aktiengesellschaft - Inventors: Laszlo Bajai; Tobias Kemper; Bruno Moreno Stuck - Web page: https://patentgrep.com/patent/US20210241971A1 ## CPC - H01F 27/402: {Association of measuring or protective means} - G01R 31/62: Testing of transformers - H01F 27/02: Casings - H01F 27/24: Magnetic cores - H01F 27/28: Coils; Windings; Conductive connections - H01F 27/404: {Protective devices specially adapted for fluid filled transformers} - H01F 27/12: Oil cooling - H01F 27/406: {Temperature sensor or protection} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract A device for reactive power compensation in a high-voltage network. A high-voltage connection is provided for each phase of the high-voltage network. Each high-voltage connection is connected to a first high-voltage winding surrounding a first core portion and to a second high-voltage winding surrounding a second core portion. The core portions are part of a closed magnetic circuit. Low-voltage ends of each high-voltage winding can be connected to at least one saturation switching branch which is configured to saturate the core portions and has actuatable power semiconductor switches, which are actuated by a control unit. Each saturation switching branch has at least one two-pole submodule with a bridge circuit having power semiconductor switches and a DC voltage source. Depending on the actuation of the power semiconductor switches, the DC voltage source can either be connected in series to at least one high- voltage winding or can be bridged. ## Claims ### Claim at position 1 1-15. (canceled). ### Claim 16 An electrical device for connection to a high-voltage supply system, the electrical device comprising: a magnetizable core; at least one winding which is configured for generating a magnetic field in said core; a group of measurement sensors having outputs for providing measurement signals; at least one communication unit having a housing containing a GSM module, a plurality of analog measurement inputs, and a plurality of digital measurement inputs respectively connected to said outputs of some of said measurement sensors; and said at least one communication unit being configured for processing measurement data obtained from the measurement signals received at said measurement inputs. ### Claim 17 (depends on 16) The electrical device according to claim 16, wherein said group of measurement sensors comprises: a winding current sensor configured to detect a winding current flowing through the at least one winding; and a position sensor which is used for determining a spatial position of the electrical device. ### Claim 18 (depends on 16) The electrical device according to claim 16, wherein said at least one communication unit comprises an input for a resistance thermometer. ### Claim 19 (depends on 16) The electrical device according to claim 16, wherein said at least one communication unit comprises a USB receptacle and an Ethernet receptacle. ### Claim 20 (depends on 17) The electrical device according to claim 17, wherein said position sensor is arranged outside the housing of the respective communication unit. ### Claim 21 (depends on 16) The electrical device according to claim 16, wherein said at least one communication unit comprises an internal timer. ### Claim 22 (depends on 16) The electrical device according to claim 16, further comprising a tank filled with insulating fluid, wherein said group of measurement sensors comprises a temperature sensor in an upper area of said tank and a temperature sensor in a lower area of the tank, said temperature sensors being respectively configured for detecting a temperature of the insulating fluid. ### Claim 23 (depends on 16) The electrical device according to claim 16, wherein said at least one winding is embedded in an electrically nonconductive solid and is populated with a winding temperature sensor configured for detecting a temperature of said winding. ### Claim 24 (depends on 16) The electrical device according to claim 16, wherein said at least one communication unit comprises a central processing unit, a coprocessor with an input side connected to said measurement inputs and an output side connected to said central processing unit, and a memory unit connected to said central processing unit. ### Claim 25 (depends on 24) The electrical device according to claim 24, wherein said coprocessor is configured for collecting, sampling the measurement signals to thereby obtain measured values, for digitizing the measured values to thereby obtain measurement data, for averaging the measurement data to thereby obtain averaged measurement data, and for forwarding the averaged measurement data to said central processing unit. ### Claim 26 (depends on 25) The electrical device according to claim 25, wherein said central processing unit is configured for receiving the averaged measurement data, for further processing the measurement data to thereby obtain processed ### Claim 27 (depends on 16) The electrical device according to claim 16, wherein said at least one communication unit comprises a logic unit. measurement data, for storing the processed measurement data in said memory unit, and for transmitting the processed measurement data to said GSM module. ### Claim 28 (depends on 27) The electrical device according to claim 27, wherein said logic unit is actuatable via said GSM module. ### Claim 29 (depends on 16) The electrical device according to claim 16, wherein said at least one communication unit comprises a protective housing equipped with access openings, and said housing is completely encapsulated in said protective housing. ### Claim 30 (depends on 16) The electrical device according to claim 16, wherein said at least one communication unit is arranged inside a switch cabinet.