# US 9,519,014 B2 · Systems and methods for calculating power transmission line capacity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,519,014 B2 - Document ID: US9519014B2 - Status: Granted - Kind: B2 - Application number: 14/099,351 - Filed: 2013-12-06 - Published: 2014-06-26 - Granted: 2016-12-13 - Earliest claimed: 2012-12-06 - Assignees: Dynamic Engineers, Inc. - Applicants: Dynamic Engineers, Inc. - Inventors: Robert Aaserude; Ryan Bliss - Web page: https://patentgrep.com/patent/US9519014B2 ## CPC - G01R 27/02: Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant (by measuring phase angle only G01R25/00) - H02J 3/00: Circuit arrangements for AC mains or AC distribution networks - H02J 2103/30: Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks - Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation - Y04S 40/20: Information technology specific aspects, e.g. CAD, simulation, modelling, system security - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - 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 The present disclosure provides a methodology that incorporates real-time measurement of conductor temperatures and ground clearances using a transmission line monitor, coupled with information technology and data analytics, to allow utility operators to manage their transmission systems using a dynamic line rating process. Dynamic line ratings may incorporate real-time or near-real-time data of transmission line conditions in lieu of conservative assumptions, in order to more accurately assess actual transmission line performance such that more of the power conveying capacity of the existing transmission infrastructure can be accessed with continued compliance with safety requirements applicable to the transmission line system. ## Claims ### Claim 1 An apparatus for determining a current rating for an electrical transmission line, comprising: at least one ground clearance monitor located on a power transmission line; at least one line temperature monitor located on the power transmission line; a central server computer system comprising: a receiver configured to receive actual line clearance measurements and actual line temperature measurements from the monitors located on the power transmission line; and a processor coupled with the receiver and configured to calculate a dynamic ampacity for the transmission line based at least in part on the line clearance, line temperature, and conductor characteristics of one or more conductors of the transmission line; and a user system capable of displaying the dynamic ampacity for the transmission line resulting in an adjusted load-temperature relationship for the power transmission line. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the dynamic ampacity for the transmission line is calculated using a least squares regression analysis of actual conductor temperature and line clearance measurement data pairs. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the actual conductor temperature and line clearance measurement data pairs are received from a transmission line monitor located on the transmission line. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein the processor is further configured to calculate a relationship between actual conductor temperature and line clearance. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the processor is further configured to calculate an effective temperature for a measured value of line clearance, and wherein the dynamic ampacity for the transmission line is based at least in part of the calculated effective temperature. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein said at least one ground clearance monitor comprises a LIDAR. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the receiver is configured to periodically receive line clearance measurements and line temperature measurements from a plurality of transmission line monitors. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the processor is further configured to periodically update the dynamic ampacity based on the received measurements. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the processor is further configured to calculate an amount of additional capacity available for the transmission line. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the processor is further configured to forecast an available ampacity for the transmission line for a future time period based on an expected temperature of the transmission line at the future time period. ### Claim 11 A method for determining a current rating for an electrical transmission line, comprising: providing at least one ground clearance monitor and at least one line temperature monitor on said power transmission line; providing a central server computer system comprising: receiving line clearance measurements and line temperature measurements for a transmission line; and calculating a dynamic ampacity for the transmission line based at least in part on the line clearance, line temperature, and conductor characteristics of one or more conductors of the transmission line; and providing said calculated dynamic ampacity for the transmission line on a user system display; adjusting a load-temperature relationship from said power transmission line; and managing power transmission of said power transmission line. ### Claim 12 (depends on 11) The method of claim 11, wherein the dynamic ampacity for the transmission line is calculated using a least squares regression analysis of actual conductor temperature and line clearance measurement data pairs. ### Claim 13 (depends on 12) The method of claim 12, wherein the actual conductor temperature and line clearance measurement data pairs are received from a transmission line monitor located on the transmission line. ### Claim 14 (depends on 12) The method of claim 12, further comprising calculating a relationship between actual conductor temperature and line clearance. ### Claim 15 (depends on 14) The method of claim 14, further comprising calculating an effective temperature for a measured value of line clearance, and wherein the dynamic ampacity for the transmission line is based at least in part of the calculated effective temperature. ### Claim 16 (depends on 11) The method of claim 11, wherein said at least one ground clearance monitor comprises a LIDAR. ### Claim 17 (depends on 11) The method of claim 11, wherein receiving the receive line clearance measurements and line temperature measurements comprises receiving the measurement periodically from a plurality of transmission line monitors. ### Claim 18 (depends on 17) The method of claim 17, further comprising periodically updating the dynamic ampacity based on the received measurements. ### Claim 19 (depends on 11) The method of claim 11, further comprising calculating an amount of additional capacity available for the transmission line. ### Claim 20 (depends on 11) The method of claim 11, further comprising forecasting an available ampacity for the transmission line for a future time period based on an expected temperature of the transmission line at the future time period.