A novel topology structure of SVC based on energy saving for unbalanced three phase compensation in low voltage power system

This paper endeavors to present a comprehensive summary of the causes and effects of three-phase unbalance and discusses the energy efficiency in the balance condition and the unbalance condition. To correct the unbalance problems, a new topology structure of SVC is proposed. The energy efficiency is analyzed by an actual experiment with the compensation of the new SVC. And the experimental result demonstrates that the energy loss can be saved by 20% or so after compensation. This paper makes apparent the importance of identifying potential energy save for benefit for both society and economic.

[1]  Hirofumi Akagi,et al.  Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components , 1984, IEEE Transactions on Industry Applications.

[2]  Paolo Tenti,et al.  Evaluation of Instantaneous Power Terms in Multi-Phase Systems: Techniques and Application to Power , 2007 .

[3]  Jacques L. Willems,et al.  Critical analysis of the concepts of instantaneous power current and of active current , 2007 .

[4]  Frede Blaabjerg,et al.  Novel Instantaneous Power Compensation Theory in Three-Phase Systems , 2001 .

[5]  Fang Zheng Peng,et al.  Reactive power and harmonic compensation based on the generalized instantaneous reactive power theory for three-phase power systems , 1996 .

[6]  M. Depenbrock,et al.  Quantities of a multiterminal circuit determined on the basis of Kirchhoff's laws , 2007 .

[7]  T. Tanaka,et al.  A new definition of instantaneous active-reactive current and power based on instantaneous space vectors on polar coordinates in three-phase circuits , 1996 .

[8]  T. M. Gruzs A survey of neutral currents in three-phase computer power systems , 1989 .

[9]  R. F. Woll Effect of Unbalanced Voltage on the Operation of Polyphase Induction Motors , 1975, IEEE Transactions on Industry Applications.

[10]  A. Liew Excessive neutral currents in three-phase fluorescent lighting circuits , 1989 .

[11]  Hirofumi Akagi,et al.  The theory of instantaneous power in three-phase four-wire systems: a comprehensive approach , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).