Aiming at the combined power quality +disturbance recognition, an automated recognition method based on wavelet packet entropy (WPE) and modified incomplete S-transform (MIST) is proposed in this paper. By combining wavelet packet Tsallis singular entropy, energy entropy and MIST, a 13-dimension vector of different power quality (PQ) disturbances including single disturbances and combined distu...

Unbalanced grid faults will lead to several drawbacks in the output power quality of photovoltaic generation (PV) converters, such as power fluctuation, current amplitude swell, and a large quantity of harmonics. The aim of this paper is to propose a flexible AC current generation method by selecting coefficients to overcome these problems in an optimal way. Three coefficients are brought in to...

Recognition and classification of different power quality events is of great importance in power systems which should be done on line. For this purpose, different methods are presented which each has advantages and disadvantages. In this paper, recognition way is presented for power quality disturbances such as sag, swell, outage, surge and normal based on fuzzy systems. In this method, voltage...

In this paper a new power quality monitoring (PQM) system for detection and classification of power quality voltage disturbances is presented. The implementation of the proposed PQM system in a graphical user interface (GUI) is also presented. The wavelet transform (WT) is used for de-noising and detection of the disturbances on power voltage line. Detected disturbances are separated using bina...

This paper presents features that characterize power quality disturbances from recorded voltage and current signals using wavelet transformation and S-transform analysis. The disturbance of interest includes sag, swell, transient and harmonics. A 25kv distribution network has been simulated using matlab software. The feature extraction has been done using wavelet transformation and S-transform,...

Regulation of swelling-activated Cl(-) current (I(Cl,swell)) is complex, and multiple signaling cascades are implicated. To determine whether protein tyrosine kinase (PTK) modulates I(Cl,swell) and to identify the PTK involved, we studied the effects of a broad-spectrum PTK inhibitor (genistein), selective inhibitors of Src (PP2, a pyrazolopyrimidine) and epidermal growth factor receptor (EGFR)...

In this paper, the compensation of voltage sags and swells using a dynamic restorer (DVR) based on bi-directional AC/AC converter is presented for stabilizing single-phase AC line voltage. The H-bridge with switches without bulk capacitor adopted as power topology proposed system. novel DVR to compensate both sag swell conditions. Additionally, factor closed unity because not required. inner ou...

ABSTRAK Sumber energi listrik PLN merupakan sumber utama bagi masyarakat. Namun kenyataan saat ini masih belum maksimal dalam menyalurkan seperti dapat terjadi pemadaman, dan fluktuasi tegangan yang gangguan AC. Gangguan sendiri menyebabkan kerusakan pada beban rumah tangga. Oleh karena itu, jurnal membuat suatu inovasi dengan memanfaatkan dari Baterai berfungsi untuk membackup ketika mengalami...

Introduction. Power quality is a major problem in today's power system, since it may have an impact on customers and utilities. Problem. important issue of financial consequences for utilities, their consumers load apparatus vendors. Voltage sag/swell are the most significant usually occurring issues secondary distribution system sensitive loads. Goal. Dynamic voltage restorer fast, flexible, e...

Power quality has been an issue that is becoming increasingly pivotal in industrial electricity consumers point of view in recent times. Modern industries employ Sensitive power electronic equipments, control devices and non-linear loads as part of automated processes to increase energy efficiency and productivity. Voltage disturbances are the most common power quality problem due to this incre...