Faulting

This paper proposes a low-voltage ridethrough (LVRT) capability for a doubly-fed induction generator (DFIG) wind turbine (WT) system. With the proposed method, series grid-side converter (SGSC) in which its DC-side connected at the DC bus of the back-toback converters and its AC-side connected in series with line through transformer have been applied, enables to compensate a voltage response of the system during the grid faults and to reduce the capital cost.

9p viengfa 28-10-2024 2 1   Download

This paper deals with the detection of rolling bearing faults based on band-pass filters and Fourier interpolation of the load torque. The reference torque, which is the output of the speed controller, is considered to be an approximation of the load torque.

15p vibecca 01-10-2024 0 0   Download

Rolling bearing faults have been capturing substantial research attention as they are the root causes of malfunctions in mechatronics systems than any other factors. The detection of rolling bearing faults in the early stage is therefore a mandatory requirement demanded by reliable industrial plants.

15p vibecca 01-10-2024 1 0   Download

This study shows the results of landslide susceptibility mapping for the southwest region of Quang Nam province using the Weights of Evidence (WoE) model. The input data consists of a landslide inventory and ten influencing factors, i.e., geology, distance to fault, elevation, relief amplitude, slope, aspect, rainfall, soil type, land use, and distance to road.

15p vibecca 01-10-2024 5 1   Download

This paper presents the research results of applying method two-dimensional energy filtering method in the "live window" to separate the high-frequency component of aeromagnetic data in order to eliminate residual flight line errors with amplitude ranges from -5÷5 nT and correct the data source before processing and analysis of data, identify potential field residual anomalies at depths h = 470 m, 1100 m, 1700 m, 2300 m.

13p viyoko 01-10-2024 4 1   Download

In this article, the research team proposes a costeffective IoT-based approach, integrating data like SCADA, to enhance management and monitoring convenience. The research outcome aims to design an electrical cabinet that includes various mechanisms to detect, and safeguard loads from potential incidents, while also being capable of collecting operational data, recording incident occurrences, and integrating with the central management system at the construction site.

7p viyoko 01-10-2024 1 1   Download

This research is aimed to find out the mistakes students at Asian High School (AHS) usually have while they have a Listening test. Since their faults happen quite a lot when they build an academic essay, this research also gives students best methods to improve their listening skills. Because of serious misunderstanding between vocabularies, grammars and styles of person speaking and the accent, this research points out types of person speaking, accent, and style which are demonstrated in this study as well.

31p xuanphongdacy09 28-09-2024 6 2   Download

Bài giảng Hệ phân tán - Chương 8: Fault tolerance. Chương này cung cấp cho sinh viên những nội dung gồm: introduction to fault tolerance; process resilience; reliable client-server communication; reliable group communication; distributed commit; recovery;... Mời các bạn cùng tham khảo chi tiết nội dung bài giảng!

50p codabach1016 03-05-2024 11 2   Download

This paper, we will clarify this problem by analyzing tectonic events observed in seismic sections of the RRB and structural-tectonic data collected from numerous field trips and outcrops surounding Tonkin Gulf and some islands.

15p dianmotminh02 03-05-2024 5 3   Download

Các cấu trúc khép kín bởi đứt gãy đóng vai trò quan trọng trong việc chứa dầu khí để xác định khả năng chắn hydrocarbon của các đứt gãy, các phương pháp nghiên cứu trên thế giới hiện nay đều tập trung đánh giá ba yếu tố chính gây ảnh hưởng lên khả năng chắn của đứt gãy bao gồm: (1) chắn do kề áp thạch học, do tầng đá chứa kề áp với tầng đá chắn qua đứt gãy; (2) chắn bởi đới phá hủy đứt gãy (fault damage zone) tạo thành màn chắn thạch học được tạo thành bởi sét trong đới đứt gãy có độ rỗng và độ thấm kém;...

9p vimulcahy 02-10-2023 12 3   Download

Bài giảng Công nghệ phần mềm: Bài 9 cung cấp cho người đọc những kiến thức như: Khái niệm về chất lượng phần mềm và đảm bảo chất lượng phần mềm; Rà soát kỹ thuật - Formal technical review; Độ đo chất lượng - Software Quality metrics; Đánh giá độ tin cậy; Tránh lỗi và thứ lỗi - Fault tolerance and avoidance (reliability and availability). Mời các bạn cùng tham khảo!

46p chankora08 04-07-2023 12 7   Download

This article introduces a method which could quickly delineate short-circuit fault location by establishing the corresponding matrix between nodes on grid and short circuit current value. A 22kV Daklak distribution grid – E471 line is studied. A big data of input as load, source, season coefficient, utilization coefficient and all four types of short circuit have been considered and calculated in detail.

7p vidoctorstrange 06-05-2023 8 2   Download

This research investigates the relationship between post fault transient overvoltages and the functionality of the digital distance protection. The study is conducted in a 66kV network with a neutral earth resistor as method to earth the power system. This paper begins by performing an extensive power system analysis on ground fault transient overvoltages. The study is conducted by using the PSCAD-EMTC software package.

180p runthenight07 01-03-2023 10 3   Download

The main objective of this research "Dynamic modelling of an aggregated solar-PV system for power system transient stability studies" is to develop an aggregated solar-PV model and critically analyse its performance under various operating conditions and faults.

104p runthenight04 02-02-2023 6 2   Download

The Kösdağ Metavolcanics (KMs) in the southern Central Pontides are exposed between the İzmir-Ankara-Erzincan Suture Belt in the south and the Sakarya Composite Terrane in the north. They comprise an approximately 40-km-long tectonic unit, bounded by the splays of the North Anatolian Transform Fault in the north and the Kızılca Thrust in the south. The basement of the unit mainly consists of metabasalts, metaandesites, and metarhyolites, with well-developed blastomylonitic textures, which are interlayered by recrystallized pelagic limestone and chert.

22p tanmocphong 29-01-2022 16 1   Download

The Late Pleistocene-Holocene evolution of the Adapazarı Basin was investigated using the stratigraphy, geometry, and absoluteluminescence dating of the 4-step fluvial terrace staircases of the Sakarya River. The results revealed that the fluvial cycle was primarily related to relative sea level changes of the Black Sea. The initiation of deposition and the abandonment ages of the terraces indicated relative high stands during marine isotope stage (MIS) 5a (~84–72 ka), 3 (40–30 ka), and 1 (9 ka-recent).

23p tanmocphong 29-01-2022 15 1   Download

Herein, a combined analysis of Global Navigation Satellite System-derived strain rate maps, in accordance with recent seismicity, was presented to reveal that the N-S extension is accommodated primarily by strike-slip faulting of the İzmir-Balıkesir Transfer Zone (İBTZ), where a counter clockwise rotation (~25–100°/Myr) along the vertical axis is dominant. The results indicated that strike-slip segments within the İBTZ show variable transport sense and amount of slip along them, and they connect by hard linkage relay ramps with the dip to oblique slip normal faults.

18p tanmocphong 29-01-2022 19 1   Download

The southern part of the Western Anatolia Extensional Province is governed by E-W-trending horst-graben systems and NW-SE-oriented active faults. The NW-striking Yatağan Fault is characterised by an almost pure normal sense of motion with a minor dextral strike slip component. Although the settlements within the area have been affected by several earthquake events since ancient times (~2000 BCE), the earthquake potential and history of the Yatağan Fault has remained unknown until a few years ago.

21p tanmocphong 29-01-2022 14 1   Download

Large earthquakes that have occurred along the North Anatolian Fault (NAF) were analysed to elaborate the time frame of future large earthquakes near İstanbul. The historical earthquake catalog that was compiled covered 1 nearly complete and 2 fully complete failures of the NAF between 1250 and 2000 AD. These data were used to investigate the space-time systematics of M ≥ 7.0 earthquakes. The catalogue identified an east-to-west decelerating domino-like failure of the NAF. The deceleration starts around the western tip of the 1944 Gerede rupture.

11p tanmocphong 29-01-2022 12 1   Download

We have investigated the time-dependent seismicity model of the earthquake occurrence on a regional basis through the North Anatolian Fault Zone (NAFZ). To that end, the studied region has been subdivided into 7 seismogenic zones considering the seismotectonic criteria, and then regional time and magnitude predictable (RTIMAP) model has been performed. Intervened times and magnitudes of main shocks produced in each zone have predictive properties defined by the RTIMAP.

20p tanmocphong 29-01-2022 30 1   Download