# US 2020/0401740 A1 · Aggregated model of large-scale wind farms for power system simulation software tools > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0401740 A1 - Document ID: US20200401740A1 - Status: Published application - Kind: A1 - Application number: 16/904,959 - Filed: 2020-06-18 - Published: 2020-12-24 - Earliest claimed: 2019-06-18 - Assignees: The Governors of the University of Alberta - Applicants: The Governors of the University of Alberta - Inventors: Sayed Ali Khajehoddin; Ahmadreza Tabesh; Navid Shabanikia - Web page: https://patentgrep.com/patent/US20200401740A1 ## CPC - G06F 30/20: Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) - F03D 9/257: {the wind motor being part of a wind farm} - F05B 2260/84: Modelling or simulation - G06F 2113/06: Wind turbines or wind farms - G06F 2119/06: Power analysis or power optimisation - Y02E 10/72: Wind turbines with rotation axis in wind direction - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - F03D: WIND MOTORS - F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G - 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 A method of modeling an equivalent wind turbine generator (WTG) system for a wind farm having a plurality of WTG units includes determining an impact factor of each WTG unit of the plurality of WTG units, determining an equivalent single WTG unit model parameters of the wind farm based on the impact factor of each WTG unit, and determining an effective wind speed of the wind farm to use as the equivalent WTG input wind speed. The method produces a model of static and/or dynamic wind farm behavior. Additionally, a software configured to execute a method of modeling an equivalent wind turbine generator (WTG) system for a wind farm having a plurality of WTG units. ## Claims ### Claim 1 A method of modeling an equivalent wind turbine generator (WTG) system for a wind farm having a plurality of WTG units, the method comprising: determining an impact factor of each WTG unit of the plurality of WTG units; determining an equivalent single WTG unit model parameters of the wind farm based on the impact factor of each WTG unit; and determining an effective wind speed of the wind farm to use as the equivalent WTG input wind speed. ### Claim 2 (depends on 1) The method of claim 1 wherein the method produces a model of static wind farm behavior. ### Claim 3 (depends on 1) The method of claim 1 wherein the method produces a model of dynamic wind farm behavior. ### Claim 4 (depends on 1) The method of claim 1 wherein the plurality of WTG units are fixed speed units. ### Claim 5 (depends on 1) The method of claim 1 wherein a frequency response technique is employed to determine the impact factor of each WTG unit. ### Claim 6 (depends on 1) The method of claim 1 wherein the wind farm features a plurality of wind speed inputs. ### Claim 7 (depends on 6) The method of claim 6 wherein the plurality of wind speed inputs are in a plurality of locations throughout the wind farm. ### Claim 8 (depends on 1) The method of claim 1 wherein the plurality of WTG units feature a plurality of machine parameters. ### Claim 9 (depends on 8) The method of claim 8 further comprising determining an effect of plurality of machine parameters on each WTG unit of the plurality of WTG units. ### Claim 10 (depends on 1) The method of claim 1 wherein the impact factor of a WTG unit is the proportion of the WTG unit output current increment to a total wind farm output current increment. ### Claim 11 (depends on 1) The method of claim 1 wherein the mechanical input of the equivalent WTG unit is the sum of a total mechanical input of all WTG units in the wind farm. ### Claim 12 (depends on 1) The method of claim 1 wherein the mechanical input increment of the equivalent WTG unit is a sum of a total mechanical input increment of all WTG units in the wind farm. ### Claim 13 (depends on 1) The method of claim 1 further comprising determining an equivalent collector system model parameter of the wind farm based on the impact factor and an equilibrium point of each WTG unit. ### Claim 14 (depends on 1) The method of claim 1 wherein determining an equivalent single WTG unit model parameters of the wind farm based on the impact factor of each WTG unit includes first determining an equivalent electrical side of the windfarm including at least one generator or converter based on associated impact factors, and then determining an equivalent mechanical side of the windfarm including at least one wind turbine based on the equivalent electrical side and the impact factors. ### Claim 15 (depends on 1) A computer comprising machine readable medium having stored thereon one or more sequences of instructions configured to execute the method of claim 1. ### Claim 16 A method of modeling an equivalent system for parallel systems having a plurality of units, the method comprising: determining an impact factor of each unit proportional to its operating point of the plurality of units; determining an equivalent single unit model parameters of the overall parallel system based on the impact factor of each unit; and determining an effective input of the overall parallel system to use as the equivalent input. ### Claim 17 (depends on 16) The method of claim 16 wherein the parallel systems include any of parallel converters, PV farms, battery banks and renewables.