{"id":6142,"date":"2022-06-25T19:39:39","date_gmt":"2022-06-25T10:39:39","guid":{"rendered":"http:\/\/ftz.myds.me\/wordpress\/?p=6142"},"modified":"2023-01-04T16:43:33","modified_gmt":"2023-01-04T07:43:33","slug":"%eb%b3%80%ed%99%98%ec%9d%98-%ea%b8%b0%ec%b4%88","status":"publish","type":"post","link":"http:\/\/ftz.myds.me\/wordpress\/%eb%b3%80%ed%99%98%ec%9d%98-%ea%b8%b0%ec%b4%88\/","title":{"rendered":"\ubcc0\ud658\uc758 \uae30\ucd08\u2055"},"content":{"rendered":"\n<p><meta charset=\"utf-8\">[acf field=ver]\u2605[acf field=rate]![acf field=edited] <\/p>\n\n\n\n<p class=\"has-text-align-right\"><strong>\ubcc0\ud658\uc758 \uae30\ucd08<\/strong><\/p>\n\n\n\n<h3>\uc804\uc6d0 \ub2e8\ub77d\uc6a9\ub7c9\uc73c\ub85c \ub4f1\uac00 \uc784\ud53c\ub358\uc2a4 \uc0b0\ucd9c<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>154kV\ubcc0\uc804\uc18c\uc5d0\uc11c \ub2e8\ub77d\uc6a9\ub7c9\uc774 25[MVA]\uc774\ub2e4. \ubcc0\uc804\uc18c\uc5d0\uc11c 100[MVA] \uae30\uc900 \ub4f1\uac00\uc784\ud53c\ub358\uc2a4\ub97c \uad6c\ud558\ub77c.<\/p><\/blockquote>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\%Z=\\frac{P_b}{P_s}\\times 100=\\frac{100}{25}\\times 100=400[\\%]\\]\n\\[Z_{pu}=4[pu]\\]<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/vendor\/regenerator-runtime.min.js?ver=0.13.9' id='regenerator-runtime-js'><\/script>\n<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/vendor\/wp-polyfill.min.js?ver=3.15.0' id='wp-polyfill-js'><\/script>\n<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/hooks.min.js?ver=4169d3cf8e8d95a3d6d5' id='wp-hooks-js'><\/script>\n<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/i18n.min.js?ver=9e794f35a71bb98672ae' id='wp-i18n-js'><\/script>\n<script id='wp-i18n-js-after'>\nwp.i18n.setLocaleData( { 'text direction\\u0004ltr': [ 'ltr' ] } );\n<\/script>\n<script  async src='https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/mathjax\/2.7.7\/MathJax.js?config=TeX-MML-AM_CHTML' id='mathjax-js'><\/script>\n<\/div>\n\n\n\n<h3>%Z\ub97c \uae30\uc900\uc6a9\ub7c9\uc73c\ub85c \ud658\uc0b0\uacfc R\/X\ube44 \uc801\uc6a9<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\ubcc0\uc555\uae30 \uc815\uaca9\uc774 80MVA, 154\/22.9kV, Z=15%, \uc778 \ubcc0\uc555\uae30\uac00 \uc788\ub2e4. 100MVA \uae30\uc900\uc758 \uc784\ud53c\ub358\uc2a4\ub85c \ud658\uc0b0\ud558\uc5ec\ub77c. (\ub2e8, X\/R=36)<\/p><\/blockquote>\n\n\n\n<p>100 [MVA]\ub85c \ud658\uc0b0 %Z \ud658\uc0b0<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\%Z_{new}=\\%Z_{old}\\times\\frac{P_{b,new}}{P_b,old}=15\\times\\frac{100}{80}=18.75[\\%]\\]<\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1167\u11ab\u1112\u116a\u11ab\u110b\u1174\u1100\u1175\u110e\u1169-1024x542-1.png\" alt=\"\" class=\"wp-image-9778\" width=\"295\" height=\"156\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1167\u11ab\u1112\u116a\u11ab\u110b\u1174\u1100\u1175\u110e\u1169-1024x542-1.png 1024w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1167\u11ab\u1112\u116a\u11ab\u110b\u1174\u1100\u1175\u110e\u1169-1024x542-1-300x159.png 300w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1167\u11ab\u1112\u116a\u11ab\u110b\u1174\u1100\u1175\u110e\u1169-1024x542-1-768x407.png 768w\" sizes=\"(max-width: 295px) 100vw, 295px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\%R=\\%Z_{new}\\times \\cos(\\tan{^-1} X\/R)\\]\\[=18.75\\times\\cos(\\tan^{-1} 36)=0.52[\\%])\\]\n\\[\\%X=\\%Z_{new}\\times \\sin(\\tan{^-1} X\/R)\\]\\[=18.75\\times\\sin(\\tan^{-1} 36)=a8.74[\\%])\\]\n\\[\\%Z_{new}=0.52+j18.74\\]<\/div>\n\n\n\n<h3>\uae30\uc900 \uc804\ub958, \uae30\uc900 \uc784\ud53c\ub358\uc2a4<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\uacc4\ud1b5\uc758 \uace0\uc7a5\uacc4\uc0b0\uc5d0\uc11c \uae30\uc900\uc6a9\ub7c9\uc744 100[MVA]\ub85c \ud560 \ub54c 22.9[kV]\uc640 154[kV]\uc758 \uae30\uc900\uc804\ub958, \uae30\uc900 \uc784\ud53c\ub358\uc2a4\ub97c \uad6c\ud558\uc2dc\uc624.<\/p><\/blockquote>\n\n\n\n<h4>1) \uae30\uc900\uc6a9\ub7c9 100[MVA], \uae30\uc900\uc804\uc555 22.9[kV]<\/h4>\n\n\n\n<p>\u2460 \uae30\uc900\uc804\ub958 :<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[I_b=\\frac{P_b}{\\sqrt3 V}=\\frac{100\\times 10^3}{\\sqrt3\\times 22.9}=2,521.18[A]\\]<\/div>\n\n\n\n<p><br>\u2461 \uae30\uc900 \uc784\ud53c\ub358\uc2a4:<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[ Z_b=\\frac{V^2[kV]}{P_b[MVA]}=\\frac{22.9^2}{100}=5.24[\\Omega]\\]<\/div>\n\n\n\n<h4>2) \uae30\uc900\uc6a9\ub7c9 100[MVA], \uae30\uc900\uc804\uc555 154[kV]<\/h4>\n\n\n\n<p>\u2460 \uae30\uc900\uc804\ub958 :<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[I_b=\\frac{P_b}{\\sqrt3 V}=\\frac{100\\times 10^3}{\\sqrt3\\times 154}=374.9[A]\\]<\/div>\n\n\n\n<p><br>\u2461 \uae30\uc900 \uc784\ud53c\ub358\uc2a4:<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[Z_b=\\frac{V^2[kV]}{P_b[MVA]}=\\frac{154^2}{100}=237.16[\\Omega]\\]<\/div>\n\n\n\n<h3>\uae30\uc900 \uc784\ud53c\ub358\uc2a4 \uc801\uc6a9<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>765[kV] \uc1a1\uc804\uc120\ub85c\uc758 \uc784\ud53c\ub358\uc2a4\uac00 1.7+j50[\u03a9]\uc774\ub2e4. \uc774 \uc784\ud53c\ub358\uc2a4\ub97c \ub2e8\uc704\ubc95[pu]\uc73c\ub85c \ud45c\uc2dc\ud558\uc2dc\uc624. \ub610\ud55c \uc774 \uc120\ub85c\ub97c 345[kV] \uc804\uc555\uc73c\ub85c \uc6b4\uc804\uc2dc \uc784\ud53c\ub358\uc2a4\ub97c \ub2e8\uc704\ubc95\uc73c\ub85c \ud45c\uc2dc\ud558\uc2dc\uc624. \ub2e8, \uc1a1\uc804\uc120\ub85c \uc784\ud53c\ub358\uc2a4 \ubcc0\ub3d9\uc740 \uc5c6\uc73c\uba70 \uae30\uc900\uc6a9\ub7c9\uc740 100[MVA]\ub85c \uc801\uc6a9\ud55c\ub2e4.<\/p><\/blockquote>\n\n\n\n<h4>1) 765kV \uae30\uc900<\/h4>\n\n\n\n<p>\u2460 \uae30\uc900 \uc784\ud53c\ub358\uc2a4: <\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[Z_b=\\frac{V^2}{P_b}=\\frac{765^2}{100}=5,852.25[\\Omega]\\]<\/div>\n\n\n\n<p>\u2461 \ub2e8\uc704\ud45c\uc2dc: <\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[Z_{pu}=\\frac{Z_{real}}{Z_b}=\\frac{1.7+j50.0}{5,852.25}\\]\\[=0.00029+j0.00854[pu]\\]<\/div>\n\n\n\n<h4>2) 345kV \uae30\uc900<\/h4>\n\n\n\n<p>\u2460 \uae30\uc900 \uc784\ud53c\ub358\uc2a4: <\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[Z_b=\\frac{V^2}{P_b}=\\frac{345^2}{100}=1,190.25[\\Omega]\\]<\/div>\n\n\n\n<p>\u2461 \uae30\uc900 \uc784\ud53c\ub358\uc2a4: <\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[Z_{pu}=\\frac{Z_{real}}{Z_b}=\\frac{1.7+j50.0}{1,190.25}\\]\\[=0.00143+j0.042[pu]\\]<\/div>\n\n\n\n<h3>\ubcf5\uc18c\uc804\ub825 \uc751\uc6a9<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\uc804\uae30\ubd80\ud558\uac00 240V\ub85c \uc6b4\uc804\ub418\uace0 \uc788\ub2e4. \ubd80\ud558\uc758 \ud3c9\uade0\uc804\ub825\uc774 8[kW]\uc774\uace0 \uc5ed\ub960\uc740 \uc9c0\uc0c1 0.8\uc774\ub77c \ud560 \ub54c \ub2e4\uc74c\uc744 \uacc4\uc0b0\ud558\uc2dc\uc624.<br>1) \ubd80\ud558\uc758 \ud53c\uc0c1\uc804\ub825(P+jQ) [kVA]<br>2) \ubd80\ud558\uc758 \uc784\ud53c\ub358\uc2a4<\/p><\/blockquote>\n\n\n\n<p>1) \ud53c\uc0c1\uc804\ub825(S=P+jQ)<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[Q=P\\tan\\theta=8\\times\\tan(\\cos^{-1}0.8)=6[kVar]\\]\n\\[S=P+jQ=8+j6\\]<\/div>\n\n\n\n<p>2) \ubd80\ud558\uc758 \uc784\ud53c\ub358\uc2a4<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[S=P+jQ=VI^*=V(\\frac{V}{Z})^*=\\frac{V^2}{Z^*}\\]\n\\[Z^*=\\frac{V^2}{S}=\\frac{240^2}{8,000+j6,000}\\]\\[=4.608-j3.456[\\Omega]\\]<\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\u2234Z=4.608+j3.456[\\Omega]\\]<\/div>\n\n\n\n<h3>\uace0\uc7a5\uacc4\uc0b0 \uc21c\uc11c<\/h3>\n\n\n\n<ol><li>\uacc4\ud1b5 \ub2e8\uc120\ub3c4 \uc791\uc131<\/li><li>\uc784\ud53c\ub358\uc2a4 \uc790\ub8cc\uc870\uc0ac\u2192\uc804\uc6d0, \ucf00\uc774\ube14, \ubcc0\uc555\uae30, \uc804\ub3d9\uae30 \ub4f1<\/li><li>\uae30\uc900\uc6a9\ub7c9\uc73c\ub85c \uc784\ud53c\ub358\uc2a4 \ud658\uc0b0<\/li><li>\uc784\ud53c\ub358\uc2a4 \ub9f5 \uc791\uc131<\/li><li>\uc784\ud53c\ub358\uc2a4 \ud569\uc131<\/li><li>\uace0\uc7a5\uacc4\uc0b0<\/li><li>\uacb0\uacfc\ud65c\uc6a9<\/li><\/ol>\n\n\n\n<h6><strong><em>\u2605<a href=\"http:\/\/ftz.myds.me\/wordpress\/j-%ea%b3%a0%ec%9e%a5%ea%b3%84%ec%82%b0\/\">\uace0\uc7a5\uacc4\uc0b0<\/a> <br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%ea%b3%a0%ec%9e%a5-%ea%b3%84%ec%82%b0%ec%9d%98-%ea%b8%b0%ec%b4%88\/\">\uace0\uc7a5 \uacc4\uc0b0\uc758 \uae30\ucd08\u2055<br><\/a>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ed%8d%bc%ec%84%bc%ed%8a%b8-%ec%9e%84%ed%94%bc%eb%8d%98%ec%8a%a4\/\">\ud37c\uc13c\ud2b8 \uc784\ud53c\ub358\uc2a4<\/a>\u2055<br>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ea%b3%a0%ec%9e%a5-%ec%8b%9c%ea%b0%84%ec%97%90-%eb%94%b0%eb%a5%b8-%eb%b6%84%eb%a5%98\/\">\uace0\uc7a5 \uc2dc\uac04\uc5d0 \ub530\ub978 \ubd84\ub958<\/a>\u2055<br>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ea%b3%a0%ec%9e%a5-%ec%9e%84%ed%94%bc%eb%8d%98%ec%8a%a4\/\">\uace0\uc7a5 \uc784\ud53c\ub358\uc2a4<\/a>\u2055<br>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%a0%84%eb%a0%a5%ea%b3%84%ed%86%b5-%eb%8b%a8%eb%9d%bd%ec%82%ac%ea%b3%a0%ec%97%90-%eb%8c%80%ed%95%9c-%ea%b3%bc%eb%8f%84-%ed%95%b4%ec%84%9d\/\">\uc804\ub825\uacc4\ud1b5 \ub2e8\ub77d\uc0ac\uace0\uc5d0 \ub300\ud55c \uacfc\ub3c4 \ud574\uc11d<\/a>\u2055<\/em><\/strong><br><strong><em><br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%eb%b3%80%ed%99%98%ec%9d%98-%ea%b8%b0%ec%b4%88\/\">\ubcc0\ud658\uc758 \uae30\ucd08<\/a><\/em><\/strong>\u2055<\/h6>\n\n\n\n<p>I&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8B%A8%EB%9D%BD%EC%A0%84%EB%A5%98-%EA%B8%B0%EB%B3%B8%EC%9D%B4%EB%A1%A0\/\">\ub2e8\ub77d\uc804\ub958(\uae30\ubcf8\uc774\ub860)<\/a><br>\u2192A&nbsp;<a href=\"https:\/\/cq4l.com\/%ea%b8%b0%ec%97%ac%ec%a0%84%eb%a5%98\/\">\uae30\uc5ec\uc804\ub958<\/a><br>\u2192Z&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8B%A8%EB%9D%BD%EC%A0%84%EB%A5%98-%EC%A2%85%EB%A5%98\/\">\ub2e8\ub77d\uc804\ub958(\uc885\ub958)<\/a><br>C&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8B%A8%EB%9D%BD%EC%A0%84%EB%A5%98-%EA%B3%84%EC%82%B0%EB%B2%95-%EC%A2%85%EB%A5%98\/\">\ub2e8\ub77d\uc804\ub958(\uacc4\uc0b0\ubc95 \uc885\ub958)<\/a><br>\u2192Y&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8C%80%EC%B9%AD%EC%A2%8C%ED%91%9C%EB%B2%95\/\">\ub300\uce6d\uc88c\ud45c\ubc95<\/a><br>P&nbsp;<a href=\"https:\/\/cq4l.com\/%EC%88%98%EB%B3%80%EC%A0%84%EC%84%A4%EB%B9%84-%EB%8B%A8%EB%9D%BD%EC%9A%A9%EB%9F%89-%EA%B2%BD%EA%B0%90%EB%8C%80%EC%B1%85\/\">\ub2e8\ub77d\uc6a9\ub7c9 \uacbd\uac10\ub300\ucc45(\uc218\ubcc0\uc804\uc124\ube44)<\/a><br>\u2192N&nbsp;<a href=\"https:\/\/cq4l.com\/%EA%B3%84%ED%86%B5%EC%97%B0%EA%B3%84%EA%B8%B0\/\">\uacc4\ud1b5\uc5f0\uacc4\uae30<\/a><br>\u2192S<a href=\"https:\/\/cq4l.com\/%EC%B4%88%EC%A0%84%EB%8F%84-%ED%95%9C%EB%A5%98%EA%B8%B0\/\">\ucd08\uc804\ub3c4 \ud55c\ub958\uae30<\/a><\/p>\n\n\n\n<p>F\u00a0<a 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