{"id":150,"date":"2024-11-06T07:48:38","date_gmt":"2024-11-06T07:48:38","guid":{"rendered":"http:\/\/43.135.160.122\/?p=150"},"modified":"2025-04-24T02:16:06","modified_gmt":"2025-04-24T02:16:06","slug":"some-professional-knowledge-about-sfra","status":"publish","type":"post","link":"https:\/\/www.voltage-tester.com\/vi\/some-professional-knowledge-about-sfra-article\/","title":{"rendered":"M\u1ed9t s\u1ed1 ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n v\u1ec1 SFRA"},"content":{"rendered":"<p><strong>SFRA l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Sweep Frequency Response Analysis (Ph\u00e2n t\u00edch \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 qu\u00e9t), v\u00e0 \u0111\u00e2y l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu \u0111\u1ec3 ki\u1ec3m tra t\u00ecnh tr\u1ea1ng c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 cu\u1ed9n c\u1ea3m song song, m\u00e1y ph\u00e1t \u0111i\u1ec7n v\u00e0 \u1ed1ng l\u00f3t. SFRA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc, s\u1ef1 d\u1ecbch chuy\u1ec3n cu\u1ed9n d\u00e2y, s\u1ef1 l\u1ec7ch v\u1ecb tr\u00ed l\u00f5i v\u00e0 c\u00e1c s\u1ef1 c\u1ed1 ti\u1ec1m \u1ea9n kh\u00e1c c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p \u0111i\u1ec7n.<\/strong><\/p>\n\n\n\n<p><strong>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SFRA:<\/strong><br>Ph\u01b0\u01a1ng ph\u00e1p SFRA ki\u1ec3m tra ph\u1ea3n \u1ee9ng \u0111i\u1ec7n c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p (ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb t\u01b0\u01a1ng t\u1ef1) trong d\u1ea3i t\u1ea7n s\u1ed1 r\u1ed9ng. Nguy\u00ean l\u00fd c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 \u00e1p d\u1ee5ng m\u1ed9t t\u00edn hi\u1ec7u k\u00edch th\u00edch nh\u1ecf v\u00e0 \u0111o tr\u1edf kh\u00e1ng ho\u1eb7c ph\u1ea3n \u1ee9ng t\u1ea7n s\u1ed1 thu \u0111\u01b0\u1ee3c. Th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch qu\u00e9t qua d\u1ea3i t\u1ea7n s\u1ed1, th\u01b0\u1eddng t\u1eeb 10 Hz \u0111\u1ebfn v\u00e0i MHz, t\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p>Thi\u1ebft b\u1ecb ki\u1ec3m tra th\u01b0\u1eddng truy\u1ec1n m\u1ed9t t\u00edn hi\u1ec7u \u0111i\u1ec7n nh\u1ecf qua c\u00e1c cu\u1ed9n d\u00e2y v\u00e0 \u0111o \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 t\u1ea1i c\u00e1c \u0111i\u1ec3m kh\u00e1c nhau. Khi x\u1ea3y ra s\u1ef1 c\u1ed1 c\u01a1 h\u1ecdc ho\u1eb7c c\u00f3 s\u1ef1 d\u1ecbch chuy\u1ec3n c\u1ee7a cu\u1ed9n d\u00e2y, \u0111\u1eb7c t\u00ednh tr\u1edf kh\u00e1ng \u1edf m\u1ed9t s\u1ed1 t\u1ea7n s\u1ed1 nh\u1ea5t \u0111\u1ecbnh s\u1ebd thay \u0111\u1ed5i, t\u1eeb \u0111\u00f3 gi\u00fap b\u1ea1n ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1.<\/p>\n\n\n\n<p><strong>SFRA ph\u00e1t hi\u1ec7n nh\u1eefng g\u00ec:<\/strong><br>SFRA c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n m\u1ed9t s\u1ed1 lo\u1ea1i s\u1ef1 c\u1ed1 trong m\u00e1y bi\u1ebfn \u00e1p:<\/p>\n\n\n\n<p>1. Bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc c\u1ee7a cu\u1ed9n d\u00e2y: B\u1ea5t k\u1ef3 s\u1ef1 bi\u1ebfn d\u1ea1ng n\u00e0o trong cu\u1ed9n d\u00e2y m\u00e1y bi\u1ebfn \u00e1p, ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1ef1 d\u1ecbch chuy\u1ec3n ho\u1eb7c l\u1ec7ch v\u1ecb tr\u00ed, \u0111\u1ec1u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1. Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y th\u01b0\u1eddng do va \u0111\u1eadp v\u1eadt l\u00fd, qu\u00e1 t\u1ea3i ho\u1eb7c s\u1ef1 c\u1ed1 b\u00ean trong g\u00e2y ra.<\/p>\n\n\n\n<p>2. Chuy\u1ec3n \u0111\u1ed9ng ho\u1eb7c d\u1ecbch chuy\u1ec3n c\u1ee7a l\u00f5i: S\u1ef1 d\u1ecbch chuy\u1ec3n ho\u1eb7c l\u1ecfng l\u1ebbo c\u1ee7a l\u00f5i c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i c\u00e1c t\u00ednh ch\u1ea5t c\u1ea3m \u1ee9ng v\u00e0 do \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1.<\/p>\n\n\n\n<p>3. S\u1ef1 c\u1ed1 \u1edf b\u1ed9 chuy\u1ec3n c\u1ea5p ho\u1eb7c \u1ed1ng l\u00f3t: SFRA c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 \u1edf b\u1ed9 chuy\u1ec3n c\u1ea5p ho\u1eb7c \u1ed1ng l\u00f3t b\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 t\u1ea1i c\u00e1c \u0111i\u1ec3m c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p>4. Ch\u1eadp m\u1ea1ch ho\u1eb7c s\u1ef1 c\u1ed1 n\u1ed1i \u0111\u1ea5t: S\u1ef1 thay \u0111\u1ed5i trong \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 c\u0169ng c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a ch\u1eadp m\u1ea1ch ho\u1eb7c s\u1ef1 c\u1ed1 n\u1ed1i \u0111\u1ea5t, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 khi\u1ebfn m\u00e1y bi\u1ebfn \u00e1p ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng khi ch\u1ecbu t\u1ea3i.<\/p>\n\n\n\n<p>5. S\u1ef1 c\u1ed1 cu\u1ed9n d\u00e2y (v\u00ed d\u1ee5: ng\u1eafn m\u1ea1ch gi\u1eefa c\u00e1c v\u00f2ng d\u00e2y ho\u1eb7c gi\u1eefa c\u00e1c cu\u1ed9n d\u00e2y): SFRA c\u0169ng c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 b\u00ean trong cu\u1ed9n d\u00e2y, ch\u1eb3ng h\u1ea1n nh\u01b0 ng\u1eafn m\u1ea1ch gi\u1eefa c\u00e1c v\u00f2ng d\u00e2y ho\u1eb7c c\u00e1c d\u1ea1ng bi\u1ebfn d\u1ea1ng cu\u1ed9n d\u00e2y kh\u00e1c m\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c c\u00f3 th\u1ec3 kh\u00f4ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<p><strong>L\u1ee3i \u00edch c\u1ee7a SFRA:<\/strong><br>1. Kh\u00f4ng x\u00e2m l\u1ea5n: SFRA l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u201ckh\u00f4ng ph\u00e1 h\u1ee7y\u201d, c\u00f3 ngh\u0129a l\u00e0 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng y\u00eau c\u1ea7u th\u00e1o d\u1ee1 ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c th\u1ee7 t\u1ee5c x\u00e2m l\u1ea5n.<br>2. Nh\u1ea1y b\u00e9n v\u1edbi nh\u1eefng thay \u0111\u1ed5i nh\u1ecf: Thi\u1ebft b\u1ecb n\u00e0y c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i c\u01a1 kh\u00ed ho\u1eb7c c\u00e1c v\u1ea5n \u0111\u1ec1 b\u00ean trong m\u00e0 kh\u00f3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra kh\u00e1c nh\u01b0 \u0111o \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n ho\u1eb7c \u0111o h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t.<br>3. C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng cho c\u1ea3 thi\u1ebft b\u1ecb m\u1edbi v\u00e0 thi\u1ebft b\u1ecb \u0111ang v\u1eadn h\u00e0nh: SFRA r\u1ea5t h\u1eefu \u00edch cho c\u1ea3 vi\u1ec7c ki\u1ec3m tra nghi\u1ec7m thu t\u1ea1i nh\u00e0 m\u00e1y \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb m\u1edbi v\u00e0 vi\u1ec7c gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng c\u1ee7a c\u00e1c m\u00e1y bi\u1ebfn \u00e1p \u0111ang v\u1eadn h\u00e0nh.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"http:\/\/43.135.160.122\/wp-content\/uploads\/2025\/02\/522.webp\" alt=\"M\u1ed9t s\u1ed1 ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n v\u1ec1 SFRA\" class=\"wp-image-151\" srcset=\"https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/522.webp 1024w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/522-300x225.webp 300w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/522-768x576.webp 768w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/522-16x12.webp 16w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"http:\/\/43.135.160.122\/wp-content\/uploads\/2025\/02\/815.webp\" alt=\"M\u1ed9t s\u1ed1 ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n v\u1ec1 SFRA\" class=\"wp-image-152\" srcset=\"https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/815.webp 1024w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/815-300x225.webp 300w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/815-768x576.webp 768w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/815-16x12.webp 16w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>SFRA stands for Sweep Frequency Response Analysis, and it\u2019s a diagnostic technique used primarily for testing the condition of transformers and other electrical equipment, such as shunt reactors, generators, and bushings. SFRA is used to detect mechanical deformations, winding movement, core displacements, and other potential faults that could affect the performance and safety of power [&hellip;]<\/p>","protected":false},"author":1,"featured_media":151,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[772],"tags":[],"class_list":["post-150","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Some professional knowledge about SFRA - Run Test<\/title>\n<meta name=\"description\" content=\"China transformer test supplier, we provide Relay Protection Test, Resistance test, Circuit Breaker Test, and Partial Discharge Test for you with good price.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.voltage-tester.com\/vi\/some-professional-knowledge-about-sfra-article\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Some professional knowledge about SFRA - 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