• Transmission power line fault detection based on deep leaning methods

    Apr 2019 / by K. Kalanidhi, D. Vinodkumar and P. Sridharan

    In order to extract power line and find out faults of power line by overcoming traditional power line fault detection methods, it is proposed to use a deep learning method to detect the power line fault. Deep learning is a powerful method and excels at images recognition and object detection with accuracy. Deep learning methods could be trained end to end. The application of deep learning to detect fault in power line is structure in 3 steps as follows: in the first step uses deep leaning methods combined with sliding approach to make predictions of all part of input image and achieves the output map. In the second step the output map is pre-processed to make it more conducive to localization. Final step is object detection is accomplished according to the information on pre-processed output map.
    Keywords: Deep learning, fault detection, convolution neural networks, artificial neural network, decesion tree

    New authentication scheme and enhanced authentication protocol for large scale metering in smart grids

    Mar 2019 / by Lou Yongmei, Wang Ying and Li Gen

    Advanced Metering Infrastructure (AMI) plays an important role in the development of the smart grid. AMI is a computer network, which has to face the cyber security issues inevitably. Safety certification is one of the many cyber security issues. AMI have a lot of access devices, therefore it needs a simple and secure access mechanism. IEEE 802.1x is widely applied in solving the problem of wireless LAN users access authentication. In this paper, we propose a modified version of IEEE 802.1x protocol to meet the special requirements of AMI. In addition, we applied the modified IEEE 802.1x protocol also in our newly designed AMI architecture based on IPv6, and discuss the details of the authentication process. Finally, we build the experimental environment. We realize the design of AMI architecture in this experiment, and use the authentication mechanism proposed in this paper in it. Experiments show that the proposed authentication mechanism can meet the special needs of AMI, and our newly designed AMI architecture based on IPv6 has a direct commercial value.
    Keywords: Smart grid, advanced metering infrastructure, sensing architecture, authentication protocol, IEEE 802.1x, SCEP

    Repair of Pandoh dam spillway by epoxy mortar: a case study

    Mar 2019 / by J. P. Gupta and Gulab Singh Narwal

    Every year during the monsoon season the river discharge carries a huge quantity of silt laden water, boulders and tree logs which roll over the spillway surface and also the frequent flushing operations which are carried out during the monsoon season for the exclusion of deposited silt in the reservoir causes heavy damage to the spillway chute and flip bucket.

    When due to sudden flood the silt from the reservoir side is spilled over into the intake pit and the water conductor system may be choked with silt. The whole of the water has to be released through spillway until the supply of water is resumed through water conductor system for generation of electricity after desilting the intake pit. The average damage to the chute and flip bucket may be 3″ and the extent of maximum damage is observed in the flip bucket which is to the tune of 6″. At few places reinforcement bars are also found exposed. The steel plate provided at the end of the flip bucket can also be found damaged at many places.

    It is planned that in the first instance the water will be released through right side and the area in front of remaining gates up to the end of flip bucket will be repaired. Later in the second stage the water will be released through left side gate and the area in front of right side gate will be repaired.

    Analysis of arsenic contamination in the groundwater of India – Bangladesh and Nepal with a special focus on the stabilisation of arsenic-laden sludge from arsenic filters

    Mar 2019 / by Amartya Kumar Bhattacharya, Rajashree Lodh, Asoke Kumar Roy, D.M.P. Karthik, Ajai Singh, Abhay Kumar Mishra, Sweta Kumari, Varsha Kumari, Kumar Daksh, Pankaj Kumar and Anurag

    The present paper starts by presenting an overview of the arsenic contamination in the groundwater in different parts of India. The paper goes on to present standards regarding arsenic in drinking water and then proceeds to give a statewise status of Arsenic contamination. Adverse effects of arsenic on the health of human beings, accumulation of arsenic in the food chain and ill-effects of using arsenicladen water for irrigation are elaborated upon in the paper. The paper proceeds to explore technological options to deliver arsenic-free water by various ways and means. Providing medical relief to affected people is also included. Methods for safe disposal of arsenic-laden sludge from arsenic filters and various issues related to the same are also key aspects of the paper.

  • Affiliates

  • Subscribe with us