电压380伏,功率180千瓦。电容补偿时,需用多大的电容合适
\u4f60\u597d\uff01\u8bf7\u95ee\u7535\u538b\u4e0d\u8db3380V\uff0c\u7528\u591a\u5927\u7684\u8865\u507f\u7535\u5bb9\u597d\uff0c\u591a\u5927\u7684\u8865\u507f\u7535\u5bb9\uff0c\u9700\u8981\u7531\u529f\u7387\u56e0\u6570\u51b3\u7684\uff0c\u4e0e\u7535\u6e90\u7535\u538b\u5173\u7cfb\u4e0d\u5927\u3002
\u3000\u3000\u529f\u7387\u56e0\u6570\u4ece0.8\u63d0\u9ad8\u52300.95\u65f6\uff0c\u6bcfKW\u529f\u7387\u9700\u7535\u5bb9\u8865\u507f\u91cf\u4e3a0.421KVAr\uff0c\u9700\u603b\u7535\u5bb9\u8865\u507f\u91cf\uff1a
100\u00d70.421\u224842(KVAr)
\u3000\u30001\u3001\u611f\u6027\u8d1f\u8f7d\u7684\u89c6\u5728\u529f\u7387S\u00d7\u8d1f\u8f7d\u7684\u529f\u7387\u56e0\u6570COS\u03c6 = \u9700\u8981\u8865\u507f\u7684\u65e0\u529f\u529f\u7387Q\uff1a
S\u00d7COS\u03c6 =Q
2\u3001\u76f8\u65e0\u529f\u7387Q\u2018 =? \u8865\u507f\u7684\u4e09\u76f8\u65e0\u529f\u529f\u7387Q/3
3\u3001\u56e0\u4e3a\uff1a Q =2\u03c0fCU^2 \uff0c
\u6240\u4ee5\uff1a
1\u03bcF\u7535\u5bb9\u3001\u989d\u5b9a\u7535\u538b380v\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=0.045Kvar
100\u03bcF\u7535\u5bb9\u3001 \u989d\u5b9a\u7535\u538b380v\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=4.5Kvar?
1000\u03bcF\u7535\u5bb9\u3001 \u989d\u5b9a\u7535\u538b380v\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=45Kvar
4\u3001\u201c\u591a\u5927\u8d1f\u8377\u9700\u8981\u591a\u5927\u7535\u5bb9\u201d \uff1a
1\uff09\u4f60\u53ef\u4ee5\u5148\u7b97\u51fa\u4e09\u76f8\u7684\u65e0\u529f\u529f\u7387Q\uff1b
2\uff09\u5728\u7b97\u51fa1\u76f8\u7684\u65e0\u529f\u529f\u7387Q/3\uff1b
3\uff09\u5728\u7b97\u51fa1\u76f8\u7684\u7535\u5bb9C\uff1b
4\uff09\u7136\u540e\u4e09\u89d2\u5f62\u8fde\u63a5\uff01
5\u3001\u56e0\u4e3a\uff1a Q =2\u03c0fCU^2 \uff0c
\u6240\u4ee5\uff1a
1\u03bcF\u7535\u5bb9\u3001\u989d\u5b9a\u7535\u538b10Kv\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=31.4Kvar
100\u03bcF\u7535\u5bb9\u3001 \u989d\u5b9a\u7535\u538b10Kv\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=3140Kvar
6\u3001\u56e0\u4e3a\uff1a Q =2\u03c0fCU^2 \uff0c\u6240\u4ee5\uff1a
1\u03bcF\u7535\u5bb9\u3001\u989d\u5b9a\u7535\u538b220v\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=0.015Kvar
100\u03bcF\u7535\u5bb9\u3001 \u989d\u5b9a\u7535\u538b220v\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=1.520Kvar
1000\u03bcF\u7535\u5bb9\u3001 \u989d\u5b9a\u7535\u538b220v\u65f6\uff0c\u65e0\u529f\u5bb9\u91cf\u662fQ=15.198Kvar
绛旓細180鍗冪摝380v鐢ㄥ澶х數缂嗘槸涓嶇‘瀹氱殑锛岃鐪嬪叿浣撶殑鐢佃矾鎯呭喌銆備竴鑸潵璇达紝180鍗冪摝380v閫夌敤185骞虫柟閾滅嚎鍗冲彲銆180鍗冪摝璁惧380浼涓夌浉鍥涚嚎瑕佺敤瀹夊叏杞芥祦閲400A宸﹀彸鍖归厤鐨勭數绾垮嵆鍙傚閲180kW锛屽姛鐜鍥犳暟0.85锛涜绠楃數娴=180/0.38/1.73/0.85=322A锛堝畨鍏ㄨ浇娴侀噺400A宸﹀彸锛夈傜數缂嗗ぇ灏忎笌鑳藉甫鍔熺巼鐨勫搴斿叧绯伙細1銆佸鏋...
绛旓細180鍗冪摝璁惧380浼涓夌浉鍥涚嚎瑕佺敤瀹夊叏杞芥祦閲400A宸﹀彸鍖归厤鐨勭數绾垮嵆鍙傚閲180kW锛屽姛鐜鍥犳暟0.85锛涜绠楃數娴=180/0.38/1.73/0.85=322A锛堝畨鍏ㄨ浇娴侀噺400A宸﹀彸锛夈傛柇璺櫒閫夋嫨锛322*1.1=354锛屽彇杩囪浇闀垮欢鏃舵暣瀹氬400A锛岀數缂嗛夊彇锛氫笌鏂矾鍣ㄨ浇闀垮欢鏃舵暣瀹氬笺400A鍖归厤鐨勭數缂嗕负锛氬煁鍦版暦璁剧殑鐢电紗YJV-4x300锛...
绛旓細鈥180涓崈鐡380浼鈥濈敤185骞虫柟姣背鐨勭數缂嗐傚閲180kW锛屽姛鐜囧洜鏁0.85锛岃绠楃數娴=180/0.38/1.73/0.85=322A锛堝畨鍏ㄨ浇娴侀噺400A宸﹀彸锛夈傜數缂嗙殑鏁疯鏂瑰紡銆佺幆澧冩俯搴︺佺嚎鑺暟閲忕瓑鍥犵礌锛屽缓璁夋嫨姣旇绠楃粨鏋滃ぇ涓浜涚殑鐢电紗鎴潰绉紝浠ョ‘淇濈數缂嗙殑瀹夊叏杩愯銆
绛旓細180KW=180000W闄や互380V=473A闄や互3缁=154A姣忎釜鐢垫満缁曠粍鐨勭數娴侊紝閾滅嚎鎸夋瘡骞虫柟姣背7A绠154A闄や互7=22骞虫柟锛岃冭檻鍚姩鏃剁灛闂村姛鐜囨墍浠ュ缓璁敤25骞虫柟姣背浠ヤ笂鐨勯摐绾裤
绛旓細瑙f瀽锛180kVA涔熷氨鏄180kW锛380V涓夌浉鍔ㄥ姏鐢垫簮锛屾牴鎹笁鐩稿姩鍔涚數婧愮殑鍔熺巼璁$畻鍏紡锛歅=鈭3*U*I*cos蠄锛屽彲寰 I=P/鈭3*U*cos蠄=180000/(鈭3脳380脳0.8)鈮341.9A锛涙煡鎵惧疄鐢ㄤ簲閲戞墜鍐岋紝姣忓钩鏂归摐鑺數缂嗗畨鍏ㄨ礋杞界數娴佷负6A锛屽垯 341.9梅6鈮57骞虫柟锛涚粨鍚堢數缂嗗瀷鍙疯鏍硷紝鍙夌敤70骞虫柟鐨勯摐鑺嚎缂嗐傝ˉ鍏呰鏄...
绛旓細180鍗冪摝璁惧380浼涓夌浉鍥涚嚎瑕佺敤瀹夊叏杞芥祦閲400A宸﹀彸鍖归厤鐨勭數绾垮嵆鍙傚閲180kW锛屽姛鐜鍥犳暟0.85,锛涜绠楃數娴=180/0.38/1.73/0.85=322A锛堝畨鍏ㄨ浇娴侀噺400A宸﹀彸锛夈傛柇璺櫒閫夋嫨锛322*1.1=354锛屽彇杩囪浇闀垮欢鏃舵暣瀹氬400A锛岀數缂嗛夊彇锛氫笌鏂矾鍣ㄨ浇闀垮欢鏃舵暣瀹氬400A鍖归厤鐨勭數缂嗕负锛氬煁鍦版暦璁剧殑鐢电紗YJV-4x300锛岀┛...
绛旓細鎬鍔熺巼180kw380v鐢ㄥ澶х數缂嗭紝涓鐧惧叓鍗佸崈鐡﹂渶瑕侀厤鐢垫祦=180000/380/1.732/0.8=342A閫夌敤185骞虫柟閾滅嚎銆傝澶180鍗冪摝锛380浼鐨鐢靛帇闇瑕佸尮閰120骞虫柟鐨勯摐绾挎墠琛岋紝璁$畻鏂规硶杈冧负澶嶆潅锛屽彲鍙傝冪數宸ユ墜鍐屻傛埅娴侀噺涓庡绾跨殑鑰愮儹鎬с佺粷缂樻潗璐ㄥ強鏁疯鏂瑰紡绛夋湁鍏崇郴銆
绛旓細鏍规嵁鐢靛伐瀛︿腑鍔熺巼,鐢靛帇,鐢垫祦鐨勫叧绯荤畻鍑虹數娴佺殑澶у皬.P=1.732*U*I*0.8 寮忎腑:1.732鏄牴鍙3,0.8鏄姛鐜囧洜鏁.180KW=1.732*380*I*0.8 I=340瀹.閭d箞宸ヤ綔鐢垫祦涓340A,鑰冭檻鍒拌礋鑽蜂腑鏈夎捣鍔ㄧ數娴佸緢澶х殑璁惧(姣斿鐢靛姩鏈虹瓑),鎵浠ュ彲浠ラ傚綋鑰冭檻绾跨殑璺濈鍜屽彂鐑洜绱,閫夋嫨鐢电嚎鐢电紗鐨勭嚎寰勬斁澶т竴浜,涓夌浉鐢电紗鐨...
绛旓細濡傛灉鏄380V鐨勭數鍔ㄦ満 鍔熺巼=1.732*鐢靛帇*鐢垫祦*鍔熺巼鍥犳暟*鏁堢巼 180=1.732*0.38*鐢垫祦*0.8*0.95 鐢垫祦=180/(1.732*0.38*0.8*0.95)=360(瀹)绠鏄撶殑绠楁硶锛氱數娴=鍔熺巼*2=180*2=360
绛旓細Ie=180kW/(鈭3脳380V脳0.8)鈮342A 2.鏍规嵁 Ie 锛岀‘瀹氱數缂嗘埅闈㈢Н 銆愪互VV鍨嬮摑鑺數缂嗕负渚嬨戜粠涓婅〃鍙煡锛3脳95骞虫柟姣背鐨勯摑鑺數缂嗙殑杞芥祦閲忔槸177A锛岃嫢涓ゆ牴骞惰仈锛岃浇娴侀噺涓 354A锛屽ぇ浜342A锛屾墍浠ュ彲閫夌敤銆傘愪笂杩拌绠楁槸鍩轰簬鎵鏈夌數鏈哄悓鏃朵娇鐢紝涓旀寜棰濆畾鍔熺巼璁$畻銆傝嫢鑰冭檻涓嶅悓宸ュ喌鍜岃礋鑽风巼锛屽彲涔樹笂涓涓...