A Fast and Accurate Detection Method of Instantaneous Reactive Current in Single-phase Power System

Xiaokang Liu; Liansong Xiong; Fang Zhuo; Ying Chen; Minghua Zhu

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자료유형: 학술대회자료

저자정보: Xiaokang Liu (Xi’an Jiaotong University) Liansong Xiong (Xi’an Jiaotong University) Fang Zhuo (Xi’an Jiaotong University) Ying Chen (Xi’an Jiaotong University) Minghua Zhu (Xi’an Jiaotong University)

저널정보: 전력전자학회 ICPE(ISPE)논문집 ICPE 2015-ECCE Asia

발행연도: 2015.6

수록면: 1,991 - 1,996 (6page)

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Fast and accurate detection of instantaneous reactive current in single-phase power system is a pre-requisite for the precise control of STATCOM (Static Synchronous Compensator). A major solution is based on the construction of virtual orthogonal signal in rotational coordinate transformation; however, conventional methods show weaknesses in the speed of detection and the ability of noise and harmonic suppression. In this paper, a novel method of instantaneous reactive current detection in single-phase system, with fast and accurate property as well as harmonic and noise susceptibility, is proposed. Firstly, a novel virtual orthogonal signal generation algorithm is deduced, remarkably improving the immediacy and precision of detection in synchronous reference frame. Then an enhanced moving average filter (EMAF) is utilized in cascade and its design principle is proposed, sufficiently eliminating the effects of noise and harmonics. Finally, experiments reveal that the proposed detection scheme can achieve the satisfactory control goals.

Abstract
I. INTRODUCTION
II. INSTANTANEOUS REACTIVE CURRENT DETECTION IN SYNCHRONOUS REFERENCE FRAME
III. VIRTUAL ORTHOGONAL SIGNAL GENERATION
IV. HARMONIC AND NOISE SUPPRESSION
V. APPLICATION OF THE NOVEL INSTANTANEOUS REACTIVE CURRENT DETECTION METHOD IN SINGLE-PHASE CASCADED STATCOM
VI. SIMULATIONS AND EXPERIMENTS
VII. CONCLUSION
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