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Acoustic and Optical Methods for Measuring (1)

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    EEE aao o l a Ela lao V. 6 N be 1999 19 999

    Acousic and Optcal Methos for Measurig

    Eecric Care Disrbtios i ieectricsatsuo aaa

    Musashi Isitute of Tchlgyky, Japn

    ABSTRACT

    Much pog hd bn mde urig th ls w des n ousti ia mod fomg hg diibu in d. vi hi s giv, whih my h tivi d ih h o b F o mtodw i iu n m th d li v gtin mh nd om h s g nig oh hg ms hn i mp xi b opt mh

    u Pk hqu ht d h ynm mum hg btio K hniqu t i dv msg t but ihin ud s

    INTODUCO

    Pyning ecr epresens a fow o ecc powe quvalent [1m2] hr m repens crc eld nteni h mag fid inni o fala h ramsn f ag amn lcic ng whh ha i uvalen na lage ying ctr earhe m e to inas hr hmagntc d

    r elrc d

    An incease

    n b a-

    omplsd b usng updung ansmson n, whl ta of cb ahivd b nang e smi tg Hwr psent, e evelpmn o paical al spernucing tanmson syem h o bee fly eaizd Theef w hav con-in o ff n btanng gh rogh a HV tramsn ym.

    To nd mch resrch on propes of deleci ad nslng maeras wil av o b conctd. hs i on of h goa o hpsn

    Th v o xceln lic ulatig maial i whhct pw lws he f Poig et h md a gnfiant cnion o e veopment eli pwer ngiee-ing elons ngnrng and ecnic ommnaton sysems n

    presen eeyday life Man esearhe hav been ndcted on lageren aresi by e dui [S/m) m-men d a ltagnt hatitic b emity [Fm] measmen th at ars He that sarh on- on h as e h e oing hogh h maad acd th d a and e e fed ar miwa f an depend

    Dung he l eas bea powr appara a oe oe cmpac nd lon dev have bem mh smale,

    th iuang mtels a ghl ssd t 1 , his na th breakdw egh o th islag al. Ude schhgh c fd ppin lcc cag may e injed fomelectod b dssiad uit that u i h eia helcc charges accumlatd n th nsulang maal dsor h ogna tna ect d ditbun he pocs ma cas the nu

    aig mal o dgde n somemes ea o ecta bkdwno maeaL r is rason s lt to den an nulain sys- der hig er te i w ny nde t cvil lcia poperies o insaing maias ha was oained n asupio ondin contn fre te dc obvatin th lcti chage nd r ld dbunbecam o nse nrs n h 970 dad [ .

    XL LCH CESIC OF

    M

    A a d oag i pli eleica inuang trl n ow hug meal cun dreae wy antkes a ong tm to reah eqbrum The y rn gnlly ncde e cpns ctc chages cd om edsano dssoiaed rm imprie n e bl e dcy me endson intins popie of h matias and be o h ode hus or day A show n igr h m andgen by o a olage aos ikne we n volume cage ha uated th maea oweve asmng hoocag is ij fom boh o i gue (a) ecr ild a te nta f lroes emes lowe an heunfm ed E, whra te d n he l bcome ighr In th

    $

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    Takda: Methods lor Muing DJc C stbn Lt f Symbols.

    Symbo Dri Uns em ml -mfer

    el tr

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    Tks smple m dfrl u m m E(f) Pe eltrc ld t G Pzetic cnst for gat rur C' zct Ota ig m Ct um cg e Cm3() m fc m/ E sf cag at t fa : Aot vot ilt tanu g m ousc oty i eltr nu m l i sl m

    l V

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    Y ms of t s mI d I ltr A dan i s m ou mdane f am km2sOtcl es Kr cnstan m/ ifig ftaxi e u r g si h pa r: Dbu f lig trnsmsi r cl ta nt rb o ia Mau lg tiy ibi f in W2

    et f lig ht W/! Sm fc tm /

    cl t s e dietc

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    wys oufom T tat o tho or kg he cconduci K [S/mby esurn the olte o aeral d hug h maia becam relvnt tis as In ordert ndetad bslecca hcitc of iuag mai, e t e throh meal he eic ld dstibn t mts ie kow h m deedc th hy c ay ecs pod, a ccl thg rap eg dtton.

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    EE Transacion on Dels and Eta Insuaon

    Tabl 2 Lis of rec o p gmun y d.

    Geom ty Exp nal u RefeneFl d e ph sbt eaum

    z tlgy 45Adv a

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    Takada Mhod o Meaug ee Chag bu

    Table 3. Lst of arie bngece meu y l-p ehd.

    ptil Fi patrn Brfgec hnquirefngc Mtod Ref Meth Ref hd iKe Ect [2 Nitbz 74,5 Ol ltrc ed

    t

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    SPACE CHRGE DISTBU[ONMSRMS

    T pd lra mtod 8 ] ad waprogtn o [] ar mn fo iang pag br s d Aig to t rain pr o ar aoc wv t W od is si t omds. O i por dcd prssu proagtnI) mtd [ h t narw prsur w i gnd ba polrc dv d h i s du pssu pgatn (L mho [56 i t pr gtd bpsd lr rd T prnip f sp hrg marmns oPPP nd mtho is h sm n s Ston i i mtod o ad rt ar cpard [ 17].

    Ver

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    h i t hd i gur 3 Cnsid aplt am wt d sa hg tun z trna ppd pud d is pd h smpnd ndcs tun n g s cu thharg to o gh ovmn nh w i ptoal t rg dstin h poiadu ud d h ousic ad o th uwv a tr s

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    Wn a cic pu s pid o h p hog oupling pacto sd u a ld wi hrg

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    IEEE ansaions o Dis ad Eial Insuato

    dstbuo is geete s dbd n h olong he aotwa po propgatg hrou the grd lt whis pootioa o se cag disibu p(z) is gve b

    = ZA oept + u / - d - ,) the oo codtions e isd he fist cdo o ba he poxa spa hage trib tht he wt p ofte is muh srt than te at tm = u oaous was aro sampl h eod condto aosti ec ah bween etoe and smpe o aiy th to Z = we ad a aous- impedn m an leod rspetel p of odt mpedac mt ben h d olaeode d e mpe

    Whe h ost wa s ro te od eto,t acoustic ssure we given y Equan nds tr compo"et srfe crge 0 n t gru letrode pace hage ) h sap ad sfae o te HV erod In a eas h ous mt mtr bt h HV ld ad th pe a t se astic ee b ttal a f ac co wa omponet f th sfce ages rh spe ae s s Z I oh wds by deectge co wave( hge ompon O ) eobie.

    O AT IGAA

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    GA O A AG IIBIO

    T acoust wa wt formatio of pa e dstiutios tste a hage sial b pzrC sdur h sig thn mfid sn a l wh i impeda npu. I t fequ doman h amifid oltge sga

    epssd a quato V=S(.ao+f+Oexpi mpoet is he sae ag e gd eecod

    z = s opo te amed spe ha n thsap

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    524 Takaa Mehds Ma Diee ha Dsbut

    cren m da a Euat 5) i frequy doa d z(t)=JT=-ZAl+Z.dtx

    [(OPl "1r)plt : )] 1= (j) O) +RU o exp [-;27fd]) 5 r l In he qations th rst cmpt s du t th sac ae

    (0) a z 0 and t thd comnet s d to th a ag hage at = d h ond ompt s d o e pacchag p at ay posi z The sa un gnbyth cnvuto m t spc chag (z = sr) an t sdaoui wa Fuhe wn Equat (6 ty tn.

    U

    G ZA Uu2 ECf 6)

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    6 akaa: Mhs f eaug t Crge bo

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    Tanatn n et an etal ntn

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    0 k Meh Mun Deei Chre rbun

    Cpctnae Figure Sa hag mau lo b spewit h

    emation he o b tad. If he pus og used i the ehd pped a temnaio, i trvels hug he cable h case, bl pedmen t oner o b Jupe -te h af o te age t mring ot l oe rr l ps, de t to and! eet hjcted e.

    Hzum deiged an epeieta tem h a h pom As hw e 6 h mesurg pt i ixed he f x g o ly vge we th pit nd god yp ple oe 2 V wa o 60 e mpedne f te capite at te mgon the reqen rne of th use voa i mh e th thaestc ipedne b m e use oltge pe a pon ( e euvaet Fge e sd ig a m at c 0 }m n hck-es and amed nde e ielded bx. The selded b ee- slt, bcs HV p e. s fred b ptc fiber meod ade pib o cy ot eet h h pto of o e ale and bv k uo y iels.

    24 2 SPACE CHA RG VOLUTIND D Fi

    bn m i he dement of d ei ale he iud d voltge i derned y a rs, h ie m e n dt an n o eamet dta f aa D meen o ace chagen abe s eeore eective

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    : es o Meug Dcc g sutgs deectd respetvy t h poiv ad niv oduhl cyces r gve as

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    IE Transaction on Delctc and a nua in

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    Taad Meo fo Mesing Der Cae srbnd o Etin 7)

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    MASURMNTSOn n h, a t bl d mlod f th

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    mn a dd i Si whl ot a deddt or h rbm o h y nom a dcu h ct 33

    SYTEM NON-UNIFORIA wodsa n ut dernt fo a i

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    aas r al s

    332 MOD LO D OK-I POCG

    Optal ie rom he lse sou, d h elect s fmth tl srs st i memet sstem F

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    y) [I+(x, y) L (x ] N= il x 51

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    Vo 6 N. O 999

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    wi e crie quti 53 s ue fd ebnm defe pston a he defce sos of abrm da both h sm cn x y ad e eemge re fud wh h diagns rte is t sisfi dig wh pi eahf he mume ystem sg die pl ffes my so deded dl ect mum ssem i excd hn dciv o a al wod fund.

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    4 YM TO

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    4 aka Meh f Meag iee Chage ibu

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    342 IRIC UCIO

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    IEEE Transatio on Delct nd Et suan

    Mam, Ftmi, Kub,aad a ooke, "MeasurmntfSptialharg o n Thick Dilricig ulsd Elcuti Mehod",I Trans. EI, V 3 o p. 4 1.

    ] . Yda a Tk "le Ectus hd r mf h cumain lid ilctis" E a Vol. No 2 pp.9 14

    10] Mra i ak nd ad "arm f ti and spers i Lw-d Plyne b Plsd E-ai M"s. lEE l. 115-A, N , p

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    [12 M. Mta k T ka "Sce Chge in ik iri trils y ld lecaoic eh" vi. 60, 7, p 1

    3 e, K ug a ad kd "Signa Pocesi Higheli A Chag mt Sm E j Vl N ,p 0 1995

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    [ i d Tk, Expal Oron of hage Taspr a Ii X Plarty Rv j Phys pL Phy, V . 5 p. 12

    [9 K Suh, S J. Ha Ji S. N and Takda f itn f th Fot c g E I, . . , pp 0-1

    20] D, knT.Ta surmfSar r Atph ted Low-deSy lel A Rprt f IDP 1

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    Takada: Mh f Maug Chag Taak H Kitjima, aed, Aali a o o

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    xa Cn ae ih i ld la, . ci. chl. p 17750 .

    [] M Koak, S Uda

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    ty: Nol a rsig o j AppL h V 77 N 92.

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    8 ok ii > . ra d H. Mut S rg Ditrtio in C Cl s tod wi tEled as J Vo. o. . 66 99B.

    [6 Hum T Ot a Ik Sp Cag a Wt e-gdd XLPECle Ini".p Vol. 15-A , . pr 15.

    Y Zh J. n, . A nd N o g Colatintw Sp-g Buidp rew i Cl nutio EE Ta oDI, Vl . 3 . , . 783 .

    [7] > ui a J Brdal i1 Antopy { o pCarg Dsr HV c f E [SE () pp 994

    [7] uzk Y T T> T

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    IEEE Transctions on Delrs nd El nsuon

    ] Kwak H Takd d Vuzai QatfoTechiquL tchrgeIa Pocl fgivaurem Lk mr", EE! l. ( o. p1 19

    1] Ksk shim S. zi a T kd C h D-li Mar Osr by Avn c t Tiq

    J. Py.V. 76 N 29 411] Kwas, nd T High l nte Masemt

    Di n e cks ct an [eock e h D: ApJ h., V 7 p. 462 19

    10 Y. Zh, Takd . u, pia urmn hq tyRsd fa Cge tb J D: p hys 28 pp 1-

    1103] k Sk , e yi rmn f urCh Disn fr rt h i r y Pok Thnque J P : p Ps., V. 2 p. 82-0

    [1] Yzu kad Y In and D T Dy bvon o l-pa u scr i t Ectrtia Pk t E rn. on o o 3 404 6

    15] N O'Fler N I Sra d Y Mcid " m h te em refrnge s -lc dlaor ts

    cto totk Mn a

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    1] M Z M t . Wt c ok ad J r K etoa F ping M n t Be da Plmhlmey o - 9

    1 H Sao, Yamgch Yht Taka HgMmety Bf usg ptal Ps Muat wo Fa ,p nl f te Sci Mr fo Rc l. 4 pp3 9

    1] M i M aa ka Ni ozw N sda Yamnak Y Iaw an S. N ti oina er- aMatd irfe Mnt i a G Ro Al pc . 3 - 14

    Vo. 6 No, 5/ Oob 1 4[0 a hmdT. Yhwa N Uea "odii ii

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