# US 2019/0173280 A1 · Inter-island power transmission system and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173280 A1 - Document ID: US20190173280A1 - Status: Published application - Kind: A1 - Application number: 16/268,422 - Filed: 2019-02-05 - Published: 2019-06-06 - Earliest claimed: 2015-08-03 - Assignees: Electronic Power Design, Inc. - Applicants: Electronic Power Design, Inc. - Inventors: JOHN Bradford JANIK - Web page: https://patentgrep.com/patent/US20190173280A1 ## CPC - H02J 3/06: Controlling the transfer of power between connected networks; Controlling load sharing between connected networks - G01R 15/20: using galvano-magnetic devices, e.g. Hall-effect devices {, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices} - G01R 31/40: Testing power supplies (testing photovoltaic devices H02S50/10) - G05B 15/02: electric - H01F 27/24: Magnetic cores - H01F 38/14: Inductive couplings - H02J 3/0012: characterised by the contingency detection means in AC networks, e.g. using phasor measurement units [PMU], synchrophasors or contingency analysis - H02J 3/02: using a single network for simultaneous distribution of AC power at different frequencies - H02J 4/00: Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36) - H02J 13/1331: {using wireless data transmission} - Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation - Y04S 10/52: Outage or fault management, e.g. fault detection or location - Y04S 40/126: using wireless data transmission - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS ## Abstract In a particular illustrative embodiment of the present invention, an inter-island power transmission system is disclosed. An electronic box is placed on each end of a medium voltage three phase power cable running between two islands. The electronic box senses an open cable on the three phase cable and switches to direct current power transmission on the remaining two good cables. The direct current power is converted back to three phase power transmission on the receiving end of the direct current power. ## Claims ### Claim 1 A system for inter-island power transmission comprising: a processor in data communication with a computer readable medium; a sensor in data communication with the computer readable medium and the processor; a set of three phase alternating current power cables in data communication with the sensor, wherein the sensor senses the power from a power transmission module on the processor in a first island, wherein a current leakage in one of the three phase power cables is sensed by sensor and the power from the power transmission module is adjusted on the one phase to reduce the current leakage. ### Claim 2 (depends on 1) The system of claim 1, wherein a frequency of the power on the one phase is lowered to reduce the current leakage. ### Claim 3 (depends on 1) The system of claim 1, wherein a frequency of the power on the one phase is raised to reduce the current leakage. ### Claim 4 (depends on 3) The system of claim 3, wherein the power supplied from power transmission module is analyzed for current leakage and a power origination status report of the power for the power supplied from power transmission module is stored in the computer readable medium. ### Claim 5 (depends on 4) The system of claim 4, wherein the power origination status report indicates current leakage. ### Claim 6 (depends on 5) The system of claim 5, the system further comprising: an antenna that sends the power origination status report to the power reception module. ### Claim 7 (depends on 6) The system of claim 6, wherein a processor in the reception module receives the status report and compares the status report to an analysis performed by a processor on the power sensed by sensors of the power received from the power transmission module. ### Claim 8 (depends on 7) The system of claim 7 further comprising sensors on the power reception module that sense the power supplied from power transmission module wherein the processor on the power reception module analyzes the power received from power transmission module as sensed by the sensors on the power transmission module and a power reception status report of the power received from power transmission module at the power reception module stored in the computer readable medium on the power reception module. ### Claim 9 (depends on 8) The system of claim 8 wherein the power reception status report indicates current leakage, wherein the power reception processor compares the power origination status report to the power reception status. ### Claim 10 (depends on 9) The system of claim 9, wherein the deviation status report is sent from the power reception module to the power transmission module and the processor on the power transmission module adjusts the power sent from the power transmission module to substantially minimize current leakage between the power origination status report and the power reception status report are reported back to the power transmission module as reported in the deviation status report. ### Claim 11 A system for inter-island power transmission comprising: a processor in data communication with a computer readable medium; a sensor in data communication with the computer readable medium and the processor; a set of three phase alternating current power cables in data communication with the sensor, wherein the sensor senses the power from a power transmission module on the processor in a first island, wherein the sensor measures the power supplied from power transmission module and the processor analyzes the power supplied from power transmission module as sensed by the sensor to determine current leakage on one of a plurality of three phase alternating current power cables. ### Claim 12 (depends on 11) The system of claim 11 wherein the power supplied from power transmission module is analyzed for phase variations, amplitude variations and power factor variations and a power origination status report of the power for the power supplied from power transmission module is stored in the computer readable medium and the power origination status report indicates current leakage one of the three phase alternating current power cables. ### Claim 13 (depends on 12) The system of claim 12, wherein a processor in the reception module receives the status report and compares the status report to an analysis performed by a processor on the power sensed by sensors of the power received from the power transmission module, the system further comprising: sensors on the power reception module that sense the power supplied from power transmission module wherein the processor on the power reception module analyzes the power received from power transmission module as sensed by the sensors on the power transmission module and a power reception status report of the power received from power transmission module at the power reception module stored in the computer readable medium on the power reception module and the power reception status report indicates current leakage, wherein the power reception processor compares the power origination status report to the power reception status and deviations between the phase variations, amplitude variations and power factor variations between the power origination status report and the power reception status report are reported back to the power transmission module are stored in the computer readable medium as a deviation status report, the deviation status report is sent from the power reception module to the power transmission module and the processor adjusts the power sent from the power transmission module to substantially minimize current leakage indicated between the power origination status report and the power reception status report are reported back to the power transmission module as reported in the deviation status report and the deviation status report is sent from the power reception module to the power transmission module and the processor on the power transmission module adjusts the power sent from the power transmission module to substantially minimize deviations between current leakage between the power origination status report and the power reception status report are reported back to the power transmission module as reported in the deviation status report. ### Claim 14 A method for inter-island power transmission comprising: sensing a set of three phase alternating current power cables in data communication with the sensor, wherein the sensor senses the power from a power transmission module on the processor in a first island, wherein the sensor measures the power supplied from power transmission module and the processor analyzes the power supplied from power transmission module as sensed by the sensor. ### Claim 15 (depends on 14) The method of claim 14, wherein the power supplied from power transmission module is analyzed for impedance variations and associated current leakage and a power origination status report of the power for the power supplied from power transmission module is stored in the computer readable medium and the power origination status report indicates current leakage variations due to changes in the power transmission frequency of the power over the three-phase power transmission cable. ### Claim 16 (depends on 15) The method of claim 15, the method further comprising: comparing a status report to an analysis performed by a processor on the power sensed by sensors of the power received from the power transmission module, comparing a power origination status report to power reception status and deviations between the current leakage and impedance variations the power origination status report and the power reception status report; sending a deviation status report, from the power reception module to the power transmission module; and adjusting in a power transmission processor, the power sent from the power transmission module to substantially minimize current leakage between the power origination status report and the power reception status report are reported back to the power transmission module as reported in the deviation status report and the deviation status report is sent from the power reception module to the power transmission module and the processor on the power transmission module adjusts the power sent from the power transmission module to substantially minimize deviations between the phase variations, amplitude variations and power factor variations between the power origination status report and the power reception status report are reported back to the power transmission module as reported in the deviation status report. ### Claim 17 (depends on 14) The method of claim 14, the method further comprising: sensing current leakage in one of a three phase alternating current power cable set that sends power from a sending electronic box on a first island to a receiving electronic box on a second island, wherein the current leakage is on one of the three phase cables is sensed by the first electronic box; and removing power from the one of the three phase alternating current cables when the current leakage is not reduce by changing the voltage and changing the frequency of the power transmitted over the one of the three phase alternating current power cable set from the first island from three phase power to direct current power transmission.