{"id":"https://openalex.org/W917940971","doi":"https://doi.org/10.14264/uql.2015.619","title":"Modular analysis of power systems : with applications to autotransformer traction systems","display_name":"Modular analysis of power systems : with applications to autotransformer traction systems","publication_year":1991,"publication_date":"1991-01-01","ids":{"openalex":"https://openalex.org/W917940971","doi":"https://doi.org/10.14264/uql.2015.619","mag":"917940971"},"language":"en","primary_location":{"id":"doi:10.14264/uql.2015.619","is_oa":false,"landing_page_url":"https://doi.org/10.14264/uql.2015.619","pdf_url":null,"source":{"id":"https://openalex.org/S7407053192","display_name":"The University of Queensland","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The University of Queensland","raw_type":"dissertation"},"type":"dissertation","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5078769647","display_name":"Peter Thomas Griffiths","orcid":null},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Peter Thomas Griffiths","raw_affiliation_strings":[],"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5078769647"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10278","display_name":"Electric Motor Design and Analysis","score":0.9980000257492065,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10278","display_name":"Electric Motor Design and Analysis","score":0.9980000257492065,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11222","display_name":"Magnetic Properties and Applications","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11568","display_name":"Railway Systems and Energy Efficiency","score":0.9914000034332275,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/autotransformer","display_name":"Autotransformer","score":0.7493638396263123},{"id":"https://openalex.org/keywords/electric-power-system","display_name":"Electric power system","score":0.6855225563049316},{"id":"https://openalex.org/keywords/traction-power-network","display_name":"Traction power network","score":0.6075842380523682},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.5315684080123901},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5121824741363525},{"id":"https://openalex.org/keywords/modular-design","display_name":"Modular design","score":0.46216583251953125},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.4589672088623047},{"id":"https://openalex.org/keywords/ground","display_name":"Ground","score":0.43802186846733093},{"id":"https://openalex.org/keywords/traction-substation","display_name":"Traction substation","score":0.43205612897872925},{"id":"https://openalex.org/keywords/harmonic","display_name":"Harmonic","score":0.4254341125488281},{"id":"https://openalex.org/keywords/transformer","display_name":"Transformer","score":0.39451026916503906},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.3837335407733917},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3800951838493347},{"id":"https://openalex.org/keywords/control-engineering","display_name":"Control engineering","score":0.3579847514629364},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.32683268189430237},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.26954543590545654}],"concepts":[{"id":"https://openalex.org/C22958824","wikidata":"https://www.wikidata.org/wiki/Q565668","display_name":"Autotransformer","level":5,"score":0.7493638396263123},{"id":"https://openalex.org/C89227174","wikidata":"https://www.wikidata.org/wiki/Q2388981","display_name":"Electric power system","level":3,"score":0.6855225563049316},{"id":"https://openalex.org/C186697258","wikidata":"https://www.wikidata.org/wiki/Q361842","display_name":"Traction power network","level":3,"score":0.6075842380523682},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.5315684080123901},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5121824741363525},{"id":"https://openalex.org/C101468663","wikidata":"https://www.wikidata.org/wiki/Q1620158","display_name":"Modular design","level":2,"score":0.46216583251953125},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.4589672088623047},{"id":"https://openalex.org/C168993435","wikidata":"https://www.wikidata.org/wiki/Q6501125","display_name":"Ground","level":2,"score":0.43802186846733093},{"id":"https://openalex.org/C145528699","wikidata":"https://www.wikidata.org/wiki/Q803616","display_name":"Traction substation","level":4,"score":0.43205612897872925},{"id":"https://openalex.org/C127934551","wikidata":"https://www.wikidata.org/wiki/Q1148098","display_name":"Harmonic","level":2,"score":0.4254341125488281},{"id":"https://openalex.org/C66322947","wikidata":"https://www.wikidata.org/wiki/Q11658","display_name":"Transformer","level":3,"score":0.39451026916503906},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.3837335407733917},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3800951838493347},{"id":"https://openalex.org/C133731056","wikidata":"https://www.wikidata.org/wiki/Q4917288","display_name":"Control engineering","level":1,"score":0.3579847514629364},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.32683268189430237},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.26954543590545654},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C117323899","wikidata":"https://www.wikidata.org/wiki/Q1907989","display_name":"Distribution transformer","level":4,"score":0.0},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.14264/uql.2015.619","is_oa":false,"landing_page_url":"https://doi.org/10.14264/uql.2015.619","pdf_url":null,"source":{"id":"https://openalex.org/S7407053192","display_name":"The University of Queensland","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The University of Queensland","raw_type":"dissertation"},{"id":"pmh:oai:espace.library.uq.edu.au:UQ:350129","is_oa":false,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4306402388","display_name":"Queensland's institutional digital repository (The University of Queensland)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I165143802","host_organization_name":"The University of Queensland","host_organization_lineage":["https://openalex.org/I165143802"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8199999928474426,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2387376750","https://openalex.org/W2373438729","https://openalex.org/W2096791568","https://openalex.org/W2512888437","https://openalex.org/W3094919665","https://openalex.org/W4214923531","https://openalex.org/W2293246392","https://openalex.org/W2010303075","https://openalex.org/W4211192477","https://openalex.org/W4250587912"],"abstract_inverted_index":{"With":[0],"the":[1,21,79,90,105,127,133,140,150,165,175,208,251,256,279,288,306,314,321,325,337,346,356,359,370,374,378,413,443,454,464,479,486,495,499,522,532,540,547,559,598],"increasing":[2],"use":[3,69],"of":[4,20,55,77,92,129,136,142,145,152,164,167,177,199,210,218,258,281,295,324,340,348,358,463,580],"switch":[5],"controlled":[6],"devices":[7,354],"within":[8,250,436,558],"power":[9,30,93,181,252,272,360],"systems,":[10,149,285],"it":[11,65,261,265],"has":[12],"become":[13],"necessary":[14,67],"to":[15,38,68,110,126,174,331,336,368,396,411,531,584],"have":[16,232,526],"a":[17,29,153,178,191,564],"detailed":[18,197,233],"knowledge":[19],"harmonic":[22,40,134,154],"currents":[23,245],"and":[24,48,53,58,72,116,214,236,243,309,320,355,377,390,457,468,574],"resonant":[25,289,315,318,326],"overvoltages":[26],"occurring":[27],"throughout":[28],"system,":[31],"so":[32,588],"that":[33,305,485,521,589],"measures":[34],"can":[35,246,311,551],"be":[36,247,267,434,594],"taken":[37],"avoid":[39],"associated":[41],"problems":[42],"such":[43,441],"as":[44,442],"motor":[45],"overheating,":[46],"capacitor":[47],"cable":[49],"overloading,":[50],"telecommunications":[51],"interference":[52],"maloperation":[54],"protection,":[56],"metering":[57],"control":[59],"equipment.":[60],"To":[61],"obtain":[62],"this":[63,581],"information,":[64],"is":[66,124,190,225,262,276,334,366,384,419,450,483,502,509,518,567,583],"analysis":[70,91,135,155,183,280,307,364,382,417],"techniques":[71],"models":[73,310,402,431],"which":[74,97,195,201,231,287,344,569],"are":[75,98,157,291,328,409,475,490],"capable":[76],"describing":[78],"system":[80,182,253,303,376,500,600],"in":[81,207],"detail.":[82],"This":[83,333,381,416,449],"thesis":[84],"examines":[85],"various":[86,143,168,282],"methods":[87,96,131,389,408,474,489,525],"used":[88,277,410,435,595],"for":[89,132,159,228,269,278,421,477,513,539],"systems.":[94,162,273,516],"The":[95,293,317,426,466,506,578],"investigated,":[99],"progress":[100],"from":[101,286,403],"those":[102,111],"based":[103,112,385],"on":[104,113,298,386],"frequency":[106,179,341,404],"domain":[107,180,342,350,405],"techniques,":[108],"through":[109],"state":[114,387,400,429,455,470,480,572],"space":[115,388,573],"time":[117,349,428,459,591],"varying":[118,460],"Norton":[119,461],"equivalent":[120],"techniques.":[121],"Particular":[122],"emphasis":[123],"given":[125],"application":[128],"these":[130,562],"autotransformer":[137,160,283,301,423],"traction":[138,148,161,284,302,424],"systems.Following":[139],"description":[141],"types":[144],"alternating":[146],"current":[147],"requirements":[151],"technique":[156,308,383],"defined":[158],"Investigation":[163],"properties":[166],"two-port":[169],"network":[170],"descriptions":[171],"then":[172],"leads":[173],"development":[176,257],"procedure":[184,194,418],"called.":[185],"Modified":[186,188,223,259,274],"Cascading.":[187],"Cascading":[189,224,275],"numerically":[192],"stable":[193],"permits":[196],"modelling":[198],"branches":[200],"contain":[202,237],"passive":[203],"linear":[204,393],"elements,":[205],"changes":[206,556],"number":[209],"phases,":[211],"phase":[212,323],"transpositions":[213],"independent":[215],"sources.":[216],"Because":[217],"its":[219],"numerical":[220,548],"stability":[221],"properties.":[222],"particularly":[226],"useful":[227],"analysing":[229],"systems":[230],"earthing":[234],"networks":[235],"large":[238],"shunt":[239],"admittance":[240],"components.":[241],"Voltages":[242],"line":[244],"determined":[248],"anywhere":[249],"network.":[254],"Following":[255],"Cascading,":[260],"shown":[263,484,520],"how":[264],"may":[266,432,593],"simplified":[268],"tree":[270],"structured":[271],"characteristics":[290],"determined.":[292],"results":[294],"field":[296],"tests":[297],"an":[299,422],"operational":[300],"indicate":[304],"accurately":[312],"determine":[313],"frequency.":[316],"level":[319],"exact":[322],"component":[327],"more":[329,492,511],"difficult":[330],"match.":[332],"due":[335],"inherent":[338],"assumptions":[339],"methods,":[343],"exclude":[345],"effects":[347],"interactions":[351,372],"between":[352,373],"non-linear":[353,379,414],"rest":[357],"system.":[361,425,560],"An":[362],"alternative":[363],"philosophy":[365],"proposed":[367],"include":[369],"dynamic":[371],"supply":[375],"loads.":[380],"uses":[391],"weighted":[392],"least":[394],"squares":[395],"estimate":[397],"single-input":[398],"multi-output":[399],"equation":[401,430],"responses.":[406],"Existing":[407],"model":[412],"devices.":[415],"implemented":[420],"continuous":[427],"also":[433,519],"nodal":[437,575],"conductance":[438,576],"matrix":[439,472],"programs,":[440],"Electromagnetic":[444],"Transient":[445],"Analysis":[446],"Program":[447],"(EMTP).":[448],"achieved":[451],"by":[452],"discretizing":[453,478],"equations":[456],"forming":[458],"equivalents":[462],"models.":[465],"trapezoidal":[467,496,507,541],"single-step":[469,487,523],"transition":[471],"(STM)":[473],"investigated":[476],"equations.":[481],"It":[482,517],"STM":[488,524],"generally":[491,510],"accurate":[493,512],"than":[494],"method":[497,508],"when":[498,553],"order":[501,515],"two":[503],"or":[504,555],"higher.":[505],"first":[514],"damping":[527,534],"adjustment":[528,535],"procedures":[529,544],"similar":[530],"critical":[533],"procedure,":[536],"recently":[537],"developed":[538],"method.":[542],"These":[543],"effectively":[545],"eliminate":[546],"oscillations":[549],"that,":[550],"occur":[552,557],"disturbances":[554],"From":[561],"findings":[563],"hybrid":[565],"approach":[566,582],"proposed,":[568],"incorporates":[570],"both":[571],"methods.":[577],"objective":[579],"increase":[585],"subsystem":[586],"accuracy,":[587],"larger":[590],"steps":[592],"without":[596],"degrading":[597],"overall":[599],"accuracy.":[601]},"counts_by_year":[],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}