Discussion Based on the Condition of Transformer Parallel Operation

Abstract:

When three-phase transformer runs parallel, power supply reliability can be improved effectively , and the number of transformer running parallel can be adjusted according to the size of the load ,which can improve the operation efficiency of the whole, in addition, it reduce the loss of transformer effectively, so as to improve the economy of power supply, but the two transformer works at the same time, they must meet the same ratio、connecting groups、per-unit value of short-circuit impedance and short-circuit impedance angle as the three conditions. This paper based on the principle of the parallel operation of transformers gives the corresponding theoretical basis. The conclusion shows that the parallel transformer which satisfies the above three factors can run normally.

• Periodical: Applied Mechanics and Materials (Volumes 496-500)
• Pages: 982-985
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.496-500.982
• Online since: January 2014
• Authors: Xiao Qing Yan, Yun Lan Ruan, Fei Cao
• Keywords: Balanced Current, Connection Group of Three-Phase, Short Circuit Impedance, Transformer

References

[1] G.R. Ma, Q.L. Wang. The factory power supply technology [M]. Beijing university of science and technology press, 2010, 8.

[2] L.T. Zhou. The factory power supply technology [M]. Higher education press, 2007, 6.

[3] G.S. Hou. Variable than does not match the transformer parallel operation analysis [R] shandong institute of electrical engineering academic conference, (2006).

[4] S.Y. Chen. Journal of hubei electric power, 2005, 29.

[5] L.S. Zhang, J Chen, L. Li. Journal of transformer, 2010, 10.

[6] Y.F. Li. Journal of information science and technology, 2008, 1.

[7] S.S. Ping. Flat salt schoenberg. Journal of transformer, 2008, 8.