A Piecewise Bound Constrained Optimization for Harmonic Responsibilities Assessment under Utility Harmonic Impedance Changes

Tianlei Zang, Zhengyou He, Yan Wang, Ling Fu, Zhiyu Peng and Qingquan Qian
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Tianlei Zang: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Zhengyou He: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Yan Wang: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Ling Fu: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Zhiyu Peng: Guizhou Key Laboratory of Electric Power Big Data, Guizhou Institute of Technology, Guiyang 550003, China
Qingquan Qian: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China

Energies, 2017, vol. 10, issue 7, 1-20

Abstract: Considering the effect of the utility harmonic impedance variations on harmonic responsibility, a method based on piecewise bound constrained optimization is proposed in this paper to evaluate the load harmonic responsibilities. The wavelet packet transform is employed to determine the change times of the utility harmonic impedances. The harmonic monitoring data is divided into several segments where the utility harmonic impedances are considered as constants. Then, the problem of harmonic responsibility assessment under utility harmonic impedance changes are settled by the piecewise bound constrained optimization model. Furthermore, the interior point, the sequential quadratic programming and the active set algorithm are respectively adopted to calculate all the instantaneous harmonic responsibilities of harmonic loads. Finally, the weighted summation is used to calculate the total harmonic responsibility. To demonstrate the validity, simulation tests are carried out on an experimental circuit and the IEEE 13-bus distribution system.

Keywords: harmonic responsibilities assessment; utility harmonic impedance changes; wavelet packet transform; piecewise approach; bound constrained optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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