Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

Article retrieval

文章檢索

首頁(yè) >> 文章檢索 >> 往年索引

500 kV變壓器空載過(guò)勵(lì)磁下的損耗與溫升特性仿真研究

來(lái)源:電工電氣發(fā)布時(shí)間:2023-10-28 09:28 瀏覽次數(shù):172

500 kV變壓器空載過(guò)勵(lì)磁下的損耗與溫升特性仿真研究

周帥1,2,王建民2,劉玉芝1,趙峰2,馮鶴超2,杜振斌2
(1 石家莊鐵道大學(xué) 電氣與電子工程學(xué)院,河北 石家莊 050043;
2 保定天威保變電氣股份有限公司 河北省輸變電裝備電磁與結(jié)構(gòu)性能重點(diǎn)實(shí)驗(yàn)室,河北 保定 071056)
 
    摘 要:為了研究變壓器空載過(guò)勵(lì)磁下的鐵心損耗和溫升特性,針對(duì)某 500 kV 單相油浸式變壓器,在對(duì)其進(jìn)行低倍過(guò)勵(lì)磁試驗(yàn)的基礎(chǔ)上,分析了不同運(yùn)行條件對(duì)激磁電流的影響;應(yīng)用有限元仿真軟件,建立變壓器磁場(chǎng)-溫度場(chǎng)耦合的仿真模型,并計(jì)算了不同倍數(shù)過(guò)勵(lì)磁工況對(duì)變壓器鐵心熱點(diǎn)溫升的影響。試驗(yàn)和仿真結(jié)果表明,隨著過(guò)勵(lì)磁倍數(shù)的增加,變壓器鐵心損耗和熱點(diǎn)穩(wěn)態(tài)溫升也在增加,在 1.15 倍及以上過(guò)勵(lì)磁時(shí),鐵心熱點(diǎn)穩(wěn)態(tài)溫升超過(guò)規(guī)定限值,變壓器不可長(zhǎng)期運(yùn)行。
    關(guān)鍵詞: 電力變壓器;空載過(guò)勵(lì)磁;場(chǎng)路耦合法;磁場(chǎng)分布;熱點(diǎn)溫升
    中圖分類號(hào):TM411+.1     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2023)10-0042-07
 
Simulation Research on Loss and Temperature Rise Characteristic of
500 kV Transformers Under No-Load Over-Excitation
 
ZHOU Shuai1,2, WANG Jian-min2, LIU Yu-zhi1, ZHAO Feng2, FENG He-chao2, DU Zhen-bin2
(1 School of Electrical and Electronic Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
2 Hebei Province Key Laboratory of Electromagnetic and Structural Performance of Power Transmission and Transformation Equipment,
Baoding Tianwei Baobian Electric Co., Ltd, Baoding 071056, China)
 
    Abstract: In order to analyze core loss and temperature rise characteristic of transformers under no-load over-excitation, the paper, based on the low times over-excitation test of a 500 kV single-phase oil-immersed transformer, analyzes the effects of different operating conditions on magnetizing current. First, the finite element simulation software is adopted to build a transformer magnetic field-temperature field coupling model. Then, the effects of over-excitation with different times on hot spot temperature rise of the transformer core are calculated.According to the test and simulation results, the core loss and hot spot steady temperature rise of transformers increases as the time of over-excitation rises. When the over-excitation is 1.15 times and above, hot spot steady temperature rise of the core can exceed the specified limit, and the transformer cannot run for a long time.
    Key words: power transformer; no-load over-excitation; field-circuit coupling method; magnetic field distribution; hot spot temperature rise
 
參考文獻(xiàn)
[1] 張燕. 油浸式變壓器過(guò)勵(lì)磁問(wèn)題初探[J] . 變壓器,1997,34(11) :23-25.
[2] SHAH A M, BHALJA B R, PATEL R M, et al.Quartile based differential protection of power transformer[J].IEEE Transactions on Power Delivery, 2020, 35(5) :2447-2458.
[3] 陳宇,高波,粟茂,等. 基于變壓器模型的特高壓變壓器飽和勵(lì)磁特性研究[J] . 高壓電器,2019,55(7) :142-149.
[4] 岳新亮,李英. 核電工程變壓器過(guò)勵(lì)磁能力研究[J].變壓器,2018,55(1) :13-18.
[5] 王建民,王藝霏,王浩名,等. 換流變壓器空載過(guò)勵(lì)磁下的電磁熱性能仿真研究[J] . 變壓器,2021,58(6) :6-12.
[6] TIAN Z.Calculation and analysis of transformer no load over excitation current based on magnetic circuit-circuit coupling model[C]//IEEE International Conference on Intelligent Computing, Automation and Applications(ICAA),2021 :628-635.
[7] 中國(guó)機(jī)械工業(yè)聯(lián)合會(huì). 電力變壓器試驗(yàn)導(dǎo)則:JB/T501—2021[S]. 北京:機(jī)械工業(yè)出版社,2021 :16-18.
[8] 李明洋. 特高壓變壓器直流偏磁下的損耗和溫升特性研究[D]. 北京:華北電力大學(xué),2021.
[9] 劉宏勛,楊慶新,張俊杰,等. 電力變壓器鐵心飽和磁特性的測(cè)量[J] . 河北工業(yè)大學(xué)學(xué)報(bào),2012,41(1) :1-4.
[10] 張良縣,陳模生,彭宗仁,等. 一種單相階梯接縫變壓器鐵芯的空載損耗計(jì)算方法[J] . 西安交通大學(xué)學(xué)報(bào),2014,48(4) :52-58.
[11] ZHANG Yanli, PENG Zhihua, XIE Dexin, et al.Effect of different magnetization curves on simulation for transformer core loss under DC bias[J].Transactions of China Electrotechnical Society, 2014,29(5) :43-48.
[12] 王澤忠,李明洋,李冰,等. 單相四柱試驗(yàn)變壓器鐵心磁化曲線等效與直流偏磁分析[J] . 電工電能新技術(shù),2020,39(8) :29-39.
[13] 趙小軍,王佳雯,劉洋,等. 諧波激勵(lì)下變壓器結(jié)構(gòu)件雜散損耗的模擬與驗(yàn)證[J] . 中國(guó)電機(jī)工程學(xué)報(bào),2020,40(2) :652-662.
[14] 劉洋,楊富堯,范亞娜,等. 畸變磁通作用下變壓器鐵心模型損耗的實(shí)驗(yàn)研究與模擬分析[J] . 電工電能新技術(shù),2017,36(3) :65-69.
[15] 晏冰.大型電力變壓器三維漏磁場(chǎng)與熱場(chǎng)耦合分析[D].沈陽(yáng):沈陽(yáng)工業(yè)大學(xué),2012.
[16] 保定天威保變電氣股份有限公司.電力變壓器手冊(cè)[M].北京:機(jī)械工業(yè)出版社,2014.
[17] 劉永志. 油浸式變壓器溫度場(chǎng)的數(shù)值計(jì)算與分析[D].沈陽(yáng):沈陽(yáng)工業(yè)大學(xué),2012.
[18] 張喜樂(lè),何松坡,王建民,等. 換流變壓器繞組損耗及熱點(diǎn)溫升的仿真研究[J] . 變壓器,2019,56(7) :24-28.
[19] OROSZ T , KLEIZER G , IVANCSY T , et al .Comparison of methods for calculation of coreform power transformer's core temperature rise[J].Periodica Polytechnica Electrical Engineering and Computer Science, 2016,60(2) :88-95.