油浸式變壓器頂層油溫?zé)崧纺P陀?jì)算分析與檢驗(yàn)
趙蓉1,馮智倩1,高榮貴1,高欣1,許強(qiáng)1,梁嗣元2
1 國網(wǎng)太原供電公司,山西 太原 030012;2 國網(wǎng)電力科學(xué)研究院,湖北 武漢 430074
摘 要:介紹了傳統(tǒng)變壓器內(nèi)部熱場(chǎng)的有限元方法模擬熱路模型,并在此基礎(chǔ)上,增加平均油溫、太陽輻射等條件參數(shù),對(duì)原有模型進(jìn)行改進(jìn),利用光纖光柵溫度測(cè)量系統(tǒng),對(duì)變壓器樣機(jī)進(jìn)行現(xiàn)場(chǎng)溫升試驗(yàn),并將熱路修正模型計(jì)算結(jié)果與幾臺(tái)變壓器實(shí)測(cè)溫升數(shù)據(jù)進(jìn)行對(duì)比,結(jié)果驗(yàn)證了該熱路修正模型的精確性。
關(guān)鍵詞:變壓器;油浸式;負(fù)荷;熱路模型;運(yùn)行;光纖光柵;溫度測(cè)量;油溫
中圖分類號(hào):TM411 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2014)02-0056-05
Oil-Immersed Transformer Top Layer Oil Temperature Thermal Circuit Model Calculation Analysis and Test
ZHAO Rong1, FENG Zhi-qian1, GAO Rong-gui1, GAO Xin1, XU Qiang1, LIANG Si-yuan2
1 State Grid Taiyuan Power Supply Company, Taiyuan 030012, China;
2 State Grid Electrical Power Research Institute, Wuhan 430074, China
Abstract: Introduction was made to the finite element method of analog thermal circuit model of traditional transformer internal thermal field,and on this basis, average oil temperature, sun radiation etc conditional parameters were added to carry out improvement for the original model.The optical fiber grating temperature measurement system was used to carry out site temperature rise test for sample transformer. This paper carried out comparison of thermal circuit amended model calculation result with several transformers actual tested temperature rise data. The result verifies the correctness of the thermal circuit amended model.
Key words: transformer; oil-immersed; load; thermal circuit model; operation; fiber grating; temperature measurement; oil temperature
參考文獻(xiàn)
[1] 張強(qiáng),姚壽廣,馬哲樹. 干式變壓器繞組溫度場(chǎng)的數(shù)值計(jì)算與分析[ J ] . 華東船舶工業(yè)學(xué)院學(xué)報(bào):自然科學(xué)版,2005,19(3):80-83.
[2] 張強(qiáng). 樹脂絕緣干式變壓器內(nèi)部溫度場(chǎng)的數(shù)值模擬和平均溫升計(jì)算方法的研究[ D ] . 鎮(zhèn)江:江蘇科技大學(xué),2005.
[3] 湯焱,劉成遠(yuǎn),郝忠言,等. 變壓器繞組熱點(diǎn)溫升的計(jì)算與實(shí)驗(yàn)研究[J]. 變壓器,2001,38(2):1-5.
[4] 劉金澤. 油浸變壓器繞組加導(dǎo)油擋板結(jié)構(gòu)時(shí)溫升計(jì)算方法[J]. 電機(jī)電器技術(shù),2003(5):12-14.
[5] 王緯武. 流體流動(dòng)與傳熱[ M ] . 北京:化學(xué)工業(yè)出版社,2002.
[6] 劉鑒民. 傳熱傳質(zhì)原理及其在電力科技中的應(yīng)用分析[M]. 北京:中國電力出版社,2006.