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| Calculation of Losses in Single Phase Three Limb Transformer Under DC-Biasing |
| Guo Mansheng1, Mei Guihua2, Zhang Xile1, Liu Dongsheng1, Liu Yancun2, Cheng Zhiguang1 |
| 1. Baoding Tianwei Baobian Electric Co. Ltd Baoding 071056 China 2. Electric Power Research Institute of Guangdong Power Grid Corporation Guangzhou 510600 China |
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Abstract Based on a great deal of test data in single phase three limb power transformer model, the W-Bm curves related to different DC-biased levels are established in this paper. The 3D transient magnetic field under different DC-biased levels with no-load and load are simulated in MAGNET. The loss and loss density of components in transformer are analyzed. The experimental results are in accordance with the simulation results, confirming the validity of the proposed losses calculation method for transformer under DC-biasing.
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Received: 25 December 2009
Published: 04 March 2014
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[1] Lahtinen M, Elovaara J. GIC occurrences and GIC test for 400kV system transformer[J]. IEEE Trans. on Power Delivery, 2002, 17(2): 555-561.
[2] Price P R. Geomagnetically induced current effects on transformers[J]. IEEE Trans. on Power Delivery, 2002, 17(4): 1002-1008.
[3] 钟连宏, 陆培均, 仇志成, 等. 直流接地极电流对中性点直接接地变压器影响[J]. 高电压技术, 2003, 29(8): 12-13, 28.
[4] 曾连生. 直流接地极电流对电力变压器的影响[J].电力建设, 2004, 25(12): 22-24.
[5] 尚春. HVDC地中电流对交流变压器影响的抑制措施[J]. 高电压技术, 2004, 30(11): 52-54.
[6] Yoshida T, Nakano M, Miyagi D, et al. Development of measuring equipment of DC-biased magnetic properties using open type single sheet tester[J]. IEEE Trans. on Magn., 2006, 42(10): 2846-2848.
[7] 李晓萍. 变压器直流偏磁问题的研究[D]. 武汉: 武汉大学, 2006.
[8] 郭满生, 梅桂华, 刘东升, 等. 直流偏磁条件下电力变压器铁心B-H曲线及非对称励磁电流[J]. 电工技术学报, 2009, 24(5): 46-51, 59.
[9] Takahashi N, Sakura T, Cheng Z. Non-linear analysis of eddy current and hysteresis losses of 3-D stray- field loss model(Problem 21)[J]. IEEE Trans. on Magn., 2001, 37(5): 3672-3675.
[10] Cheng Z, Hao R, Takahashi N, et al. Engineering- oriented benchmarking of problem 21 family and experimental verification[J]. IEEE Trans. on Magn., 2004, 40(2): 1394-1397.
[11] Webb J P, Forghani B. DC current distributions and magnetic fields using the T-Omega Edge-element method[J]. IEEE Trans. on Magn., 1995, 31(3): 1444- 1447. |
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2010, Vol. 25 
