Abstract— The system will be used to power a complex with 4-10 houses. The system can operate in standalone or grid-tied mode. When there is excessive power from the PV panels, the battery will be used to store energy. On the other hand, when there is an energy deficit, the energy stored will be released. All the components used in the system are commercially available. Cost estimation is also mention in this project. Maximum power point tracking (MPPT) technique is applied to photovoltaic (PV) system to extract maximum available power from it. Simulation results verify the effectiveness of the proposed PV system.

Keywords— Bidirectional Converter, Battery Energy Storage, distributed generator (DG), photovoltaic (PV) system, maximum power point tracking (MPPT).

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Abstract– In This paper to reduction size and increase bandwidth of the proposed double box broadband branch line coupler utilized from 𝝅-shape open stub line. The size decreasing of the structure is depending on the replacement of branched transmission by ordinary transmission lines. Small and easy fabrication of microstrip layout topology for the hybrid have been designed and fabricated relying on a low cost dielectric material, the well-known FR4.

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Abstract— Now a day’s power quality is a very important issue in power system. It represents quality assessment of the energy system in a different way. This paper starts with an introduction of power quality. After this factor affecting power quality and disturbances which has occurred in the power system are discussed with some review.

Keywords— Voltage sag, Voltage swell, Power Quality Standard, Factor affecting the power quality

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Abstract— Fault is the main factor to control the formation and distribution of oil and gas field. It is important to find out the shape and distribution of the fault. The traditional fault interpretation method is easy to be influenced by subjective factors, the reliability and the accuracy is not high, and the work efficiency is low. Therefore, it is hoped that the interpretation of the seismic data in the construction of the potential to improve the accuracy and speed of interpretation. For a long time, people have made a lot of efforts to accurately describe the fault system, put forward and applied a lot of description methods, and successfully extracted from the 3D seismic data of many outstanding fault information discontinuity attributes, such as slice technology, coherent body belongs to the technology, the variance of the technology, the angle of the angle of the property and edge enhancement technology, etc.. Along with the continuous improvement of the fault description method, the automatic identification of the fault becomes possible. In this paper, the following contents are discussed in detail: firstly, the characteristics of 3D seismic fault are introduced, and the performance of fault in time profile is summarized as 6 kinds, and a practical method of semi automatic fault interpretation is obtained. Secondly, several seismic fault interpretation methods and the extraction method of the fault enhancement attributes are introduced. The former includes the conventional fault interpretation analysis method and the fault slice interpretation method. At last, the automatic extraction technology of fault, the method of semi automatic fault recognition of artificial neural network and automatic extraction of the ant colony algorithm are introduced.

Keywords— Seismic data interpretation; Fault; Automatic fault recognition technology; Seismic coherence cube technique

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Abstract— Aiming at the major reservoirs in Sanan seven East test area reservoir fine anatomy, division and correlation of the high resolution sequence, single channel level time unit microfacies precise characterizations. Results will each wells subdivision to nine depositional time unit, again according to different sedimentary microfacies characteristics established delta distributary plain, delta front phase 1, 3 sub phase, 26 kinds of microfacies of logging facies models, identified nine depositional time unit of plane microfacies characteristics.

Keywords— fine description; deposition time; sedimentary microfacies; Sanan Oilfield

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Abstract— Speech to text conversion is a kind of speech recognition, where in the speech sound is written down in text form. This paper deals with conversion of speech into devanagari script. Speech to text conversion will help easy and faster recording of speech signal. It will also help communication with deaf people. This paper proposes use of phonetic model to convert speech to devanagari script. MFCC features are used for feature extraction.

Keywords— speech recognition, speech-to-text conversion, devanagari script

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Abstract— Li-Fi (Light Fidelity) technology is a ground breaking light-based communication technology, which makes use of light waves instead of radio technology to deliver data. Li-Fi is a bidirectional, high speed and fully networked wireless communication technology similar to Wi-Fi. Li-Fi is a subset of optical wireless communications (OWC) and can be a complement to RF communication (Wi-Fi or Cellular network), or a replacement in contexts of data broadcasting. To write this survey paper, I have studied about wireless communication. After detailed study of wireless communication, I am presenting my work.

Keywords— Wireless Communication, Wi-Fi, Internet of Things (IoT)

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