一台三相变压器110/38.5/11KV, 110×（1±8×1.25%），请问主变有多少个档位？ 一台110±2×2.5%/11KV的变压器
\u53d8\u538b\u5668\u7684\u5177\u4f53\u578b\u53f7:SFSZ10-63000/110\u00b18\u00d71.25%/38.5\u00b12\u00d72.5%/10.5 \u662f\u4ec0\u4e48\u610f\u601d\u8fd9\u53f0\u53d8\u538b\u5668\u7684\u578b\u53f7\u8868\u793a\u662f\u4e00\u53f063000kVA\u7684\u4e09\u76f8\u98ce\u51b7\u4e09\u7ebf\u5708\u6709\u8f7d\u8c03\u538b\u53d8\u538b\u5668\u3002
\u5177\u4f53\u8bf4\u4e00\u4e0b\u5404\u7b26\u53f7\u548c\u53c2\u6570\u7684\u610f\u4e49\uff1a
SFSZ10---\u7b2c\u4e00\u4e2aS\u8868\u793a\u4e09\u76f8\u53d8\u538b\u5668\uff1bF\u8868\u793a\u98ce\u51b7\uff1b\u7b2c\u4e8c\u4e2aS\u8868\u793a\u4e09\u7ebf\u5708\uff1bZ\u8868\u793a\u6709\u8f7d\u8c03\u538b\uff1b10\u662f\u8bbe\u8ba1\u5e8f\u5217\u53f7\u3002
63000\uff1a\u8868\u793a\u53d8\u538b\u5668\u7684\u989d\u5b9a\u5bb9\u91cf\uff0c\u5355\u4f4d\u662fkVA\uff1b
110\u00b18\u00d71.25%\uff1a\u8868\u793a\u9ad8\u538b\u4fa7\u989d\u5b9a\u7535\u538b\u4e3a110kV\uff0c\u53ef\u8c03\u8303\u56f4\u662f110\u00b18\u00d71.25%\u4e5f\u5c31\u662f\u8bf4\u670917\u4e2a\u5206\u63a5\u5934\uff0c\u4e2d\u95f4\u4e00\u4e2a\u4e3a\u989d\u5b9a\u7535\u538b\uff0c\u4e0a\u4e0b\u5747\u67098\u4e2a\u53ef\u8c03\u4f4d\u7f6e\uff0c\u6700\u4f4e\u7535\u538b\u4e3a
110-\uff08110*8*1.25%\uff09=99kV\u5373\u7535\u538b\u4e3a\u989d\u5b9a\u503c\u7684\u8d1f10%\uff1b\u6700\u9ad8\u7535\u538b\u4e3a110+\uff08110*8*1.25%\uff09=121kV\u5373\u7535\u538b\u4e3a\u989d\u5b9a\u503c\u7684\u6b6310%\u3002
38.5\u00b12\u00d72.5%\u8868\u793a\u4e2d\u538b\u4fa7\u989d\u5b9a\u7535\u538b\u4e3a38.5kV\uff0c\u53ef\u8c03\u8303\u56f4\u662f38.5\u00b12\u00d72.5%\u4e5f\u5c31\u662f\u8bf4\u67095\u4e2a\u5206\u63a5\u5934\uff0c\u4e2d\u95f4\u4e00\u4e2a\u4e3a\u989d\u5b9a\u7535\u538b\uff0c\u4e0a\u4e0b\u5747\u67092\u4e2a\u53ef\u8c03\u4f4d\u7f6e\uff0c\u6700\u4f4e\u7535\u538b\u4e3a38.5-\uff0838.5\u00d72\u00d72.5%\uff09=
36.575kV\u5373\u7535\u538b\u4e3a\u989d\u5b9a\u503c\u7684\u8d1f5%\uff1b\u6700\u9ad8\u7535\u538b\u4e3a38.5+\uff0838.5\u00d72\u00d72.5%\uff09=40.425kV\u5373\u7535\u538b\u4e3a\u989d\u5b9a\u503c\u7684\u6b635%\u3002
10.5\uff1a\u8868\u793a\u4f4e\u538b\u4fa7\u989d\u5b9a\u7535\u538b\u4e3a10.5kV\u3002
\u6211\u53ef\u4ee5\u544a\u8bc9\u4f60\u7684\u3002
\u53d8\u538b\u5668\u4e4b\u6240\u4ee5\u8bbe\u7f6e\u5206\u63a5\u5934\u7684\u76ee\u7684\uff0c\u5c31\u662f\u8003\u8651\u7cfb\u7edf\u7535\u538b\u7684\u6ce2\u52a8\u800c\u89e3\u51b3\u5176\u7a33\u5b9a\u6027\u7684\u95ee\u9898\u3002\u4f60\u6240\u8bf4\u4e00\u53f0110\u00b12\u00d72.5%/11KV\u7684\u53d8\u538b\u5668\uff0c\u989d\u5b9a\u53d8\u538b\u5316\u662f110/11\uff0c\u9ad8\u538b\u4fa7\u989d\u5b9a\u7535\u538b\u662f110\u5343\u4f0f\uff0c\u4f4e\u538b\u4fa7\u989d\u5b9a\u7535\u538b\u662f11\u5343\u4f0f\u3002\u4f60\u8bf4\u7684\u53d8\u538b\u5668\u4f4e\u538b\u4fa7\u662f11\u5343\u4f0f\uff0c\u53ef\u4ee5\u5224\u65ad\u8be5\u53d8\u538b\u5668\u4e3a\u964d\u538b\u53d8\u538b\u5668\u3002\u9ad8\u538b\u4fa7\u8bbe\u7f6e\u5206\u63a5\u5934\u4e3b\u8981\u662f\u89e3\u51b3\u4f4e\u538b\u7cfb\u7edf\u7535\u538b\u7a33\u5b9a\u7684\u76ee\u7684\uff0c\u5206\u63a5\u5934\u6bcf\u53d8\u5316\u4e00\u4e2a\u5206\u63a5\u5934\uff0c\u9ad8\u538b\u4fa7\u7535\u538b\u589e\u51cf\u989d\u5b9a\u7535\u538b\uff08110KV\uff09\u76842.5%\uff0c\u4e5f\u5c31\u662f\u53d8\u53162.75KV\u3002\u5982\u679c\u8fd0\u884c\u5728+2.5%\u5206\u63a5\u5934\u4e0a\uff0c \u53d8\u538b\u5668\u7684\u53d8\u538b\u6bd4\u662f112.75/11\u3002
\u7531\u4e8e\u8fd0\u884c\u4e2d\uff0c\u9ad8\u538b\u4fa7\u7684\u7535\u538b\u4e0d\u4e00\u5b9a\u662f110KV\uff0c\u53ef\u80fd\u9ad8\u4e9b\u6216\u8005\u4f4e\u4e9b\uff0c\u662f\u76f8\u5bf9\u53d8\u5316\u7684\uff0c\u6240\u4ee5\u8981\u8fdb\u884c\u8c03\u538b\uff0c\u4e3b\u8981\u4fdd\u8bc1\u4f4e\u538b\u4fa7\u8f93\u51fa\u7535\u538b\u7684\u8d28\u91cf\u5e76\u786e\u4fdd\u662f11KV\uff0c\u5f53\u7cfb\u7edf\u7535\u538b\u4f4e\u4e8e110KV\u65f6\uff0c\u53ef\u4ee5\u5411\u5206\u63a5\u59344\u548c5\u7684\u4f4d\u7f6e\u8c03\u6574\uff0c\u53ef\u4ee5\u6ee1\u8db3\u4f4e\u538b\u4fa7\u7535\u538b\u8981\u6c42\uff0c\u540c\u6837\u5f53\u7cfb\u7edf\u7535\u538b\u9ad8\u4e8e110KV\u65f6\uff0c\u53ef\u4ee5\u5411\u5206\u63a5\u59342\u548c1\u7684\u4f4d\u7f6e\u8c03\u6574\uff0c\u4e5f\u80fd\u786e\u4fdd\u4f4e\u538b\u4fa7\u7cfb\u7edf\u7535\u538b\u8981\u6c42\u3002
即+8个档位 -8个档位 还有一个额定档
低压侧10.5kV，比额定电压低0.5kV，即低-4.5%，约5%
假定高压侧电压为110kV，说明高低压的电压比不额定档高+5%左右
即高压侧在+4×1.25%档
绛旓細17涓。浣 鍗+8涓。浣 -8涓。浣 杩樻湁涓涓瀹氭。 浣庡帇渚10.5kV锛屾瘮棰濆畾鐢靛帇浣0.5kV锛屽嵆浣-4.5%锛岀害5 鍋囧畾楂樺帇渚х數鍘嬩负110kV锛岃鏄庨珮浣庡帇鐨勭數鍘嬫瘮涓嶉瀹氭。楂+5%宸﹀彸 鍗抽珮鍘嬩晶鍦+4脳1.25%妗
绛旓細鎬诲姛鐜 S = 3 * U2 * U2 / Z = 3 * 400 * 400 / 3銆61 = 132964 VA = 132銆964KVA S > P,鎵浠ユ鍙樹笉鑳借礋鎷呬笂杩拌礋杞姐
绛旓細1銆鍙樺帇鍣閾墝涓婄殑璐熻浇鎹熻楁槸鍙樺帇鍣ㄨ繍琛屽湪棰濆畾鐘舵侊紝鍙婃姌绠楀埌75搴︽俯搴︽椂鐨勬崯鑰楀笺2銆佽繖涓礋杞芥崯鑰楀寘鎷涓夌浉涔樻瘡鐩镐笁涓粫缁勶紙濡傛灉鏈夎皟鍘嬬嚎鍦堬紝杩樿鍔犺绾垮湀鐨勬崯鑰楋級鍏变節涓粫缁勭殑鍩烘湰鎹熻楋紙I^2*R锛夊姞涓婂彉鍘嬪櫒杩愯鏃剁殑闄勫姞鎹熻楋紝杩欎簺闄勫姞鎹熻楅兘鍔犲湪鍙樺帇鍣ㄦ荤殑璐熻浇鎹熻楅噷銆傝櫧鐒舵闄勫姞鎹熻椾笌鍩烘湰鎹熻椾箣闂村彲鑳...
绛旓細涓娆′晶鎺ユ硶鏄槦褰紝鐩哥數鍘嬩负(110/鈭3)kv,浜屾渚т负涓夎鎺ユ硶锛岀浉鐢靛帇11kv銆傚彉姣 (110/鈭3)/11=10/鈭3=10鈭3/3鈮5.77銆
绛旓細涓鍗峰彉鍘嬪櫒銆涓夌浉鍙樺帇鍣鐨勫瀷鍙110/35/10鏄笁鍗峰彉鍘嬪櫒銆 涓夊湀鍙樺帇鍣ㄤ竴鑸槸鐢ㄤ簬涓変釜鐢靛帇绛夌骇涔嬮棿鐨勮仈缁滃拰鍔熺巼浜ゆ崲銆備笁鍦堝彉鍘嬪櫒鐨勪笁渚х粫缁勫閲忓彲浠ョ浉鍚岋紝涔熷彲浠ヤ笉鍚屻
绛旓細1銆鍙樺帇鍣楂樺帇330kV渚ч瀹氱數娴侊細I=S/锛1.732*U锛=240000/锛1.732*330锛=419.89 锛圓锛夛紱2銆佸鏋滃彉鍘嬪櫒涓帇110kV渚ф槸鍏ㄥ閲忥紝鍒欓瀹氱數娴侊細I=S/锛1.732*U锛=240000/锛1.732*110锛=1259.67锛圓锛夛紱3銆佸鏋滃彉鍘嬪櫒浣庡帇35kV渚ф槸鍏ㄥ閲忥紝鍒欓瀹氱數娴侊細I=S/锛1.732*U锛=240000/锛1.732*35锛...
绛旓細鍏堢畻鍔熺巼鍥犳暟0.92鏃剁殑棰濆畾涓夌浉鏈夊姛鍜屾棤鍔熷姛鐜 鈭礟^2+Q^2=31500^2 Q/P=tan(arccos0.92)鈭碢=28979.98kW Q=12345.47kvar 鍐嶇畻鍔熺巼鍥犳暟0.8鏃剁殑棰濆畾涓夌浉鏈夊姛鍜屾棤鍔熷姛鐜 鈭礟^2+Q^2=31500^2 Q/P=tan(arccos0.8)鈭碢=25200kW Q=18900kvar 鏈鍚庡緱鍑猴紝鏃犲姛鍔熺巼鎻愰珮浜18900-12345.47...
绛旓細1.5p鐨勭┖璋冨姛鐜囦负1200鐡︼紝浣犺鐨310鍙樺帇鍣搴旇鏄315鍗冧紡瀹夌殑鍙樺帇鍣ㄣ傚彧瑕涓夌浉璐熻嵎鍧囪 鐨勮瘽锛屽簲璇ヨ兘甯315/1.2=262鍙般
绛旓細杩欐槸380V鍙24V110V鎺у埗鍙樺帇鍣锛屽疄闄呰繖绉嶅彉鍘嬪櫒鍦ㄥ伐涓氫笂寰堝父瑙侊紝杈撳叆涓380V锛堟帴涓ゆ潯鐏嚎锛夛紝杈撳嚭涓轰袱绉嶇數鍘嬶紙24V涓110V锛夛紝涓ょ鐢靛帇鍏辩敤涓涓粫缁勫拰闆剁瀛愶紝缁曠粍涓棿鎶藉ご涓24V銆傚敮鎭愯〃杩颁笉娓咃紝鐗归檮涓嬪浘锛
绛旓細鍙樺帇鍣涓娆′晶鎸囪緭鍏ョ锛岃緭鍏ョ鏈夊緢澶氱數鍘嬭鏍硷紝浣犱笉璇撮珮鍘嬭緭鍏ユ槸澶氬皯浼忥紝鏄棤娉曟帹绠楀嚭涓娆′晶鐨勭數娴佺殑銆
