International Journal of Engineering Trends and Technology (IJETT) - Volume 35 Number 4 - May 2016 Big Data Management for Smart Grid Gaurav Kumar, Shekhar Jha, Sonal Kumar, Ravit Anand Abstract – Smart grid has emerged as the most ingenious idea worldwide as a solution for power demand issues. Globally, all countries are searching for its effective implementation. A smart grid integrates the activities of all users connected to it, be it the producers, end users and those that do both, in order to deliver the power supply. A smart grid involves inventive products and services along with intelligent monitoring, control and self-healing machinery to improve the connection and working of generators of all sizes and technologies, allow end users to play an important role in optimizing the functioning of the system, provide end users with greater data and considerably decrease the environmental impact. The ability to merge green energy generated by wind or solar has been the greatest advantage of the smart grid. 3) Inflexible grids: Another problem is that the grids are inflexible i.e. they can’t support the integration of the nonconventional source of energy. These problems are solved by smart grids with numerous benefits for both the suppliers and the end users. 4) Distribution Loss: Distribution loss counts for about 27% of total energy generated. Distribution loss in India is highest in the world as shown in figure 1. This is a severe issue as about 400 million people in India are deprived of electricity. I. INTRODUCTION Availability of sufficient electricity infrastructure is important to assure the maintained economic advancement. India’s power sector is the fourth largest in the world but despite that it faced symbolic energy and peak paucity of about 8.7% and 9% respectively in 2012 and 2013. Only 66% of people in India have access to electricity and per capita expenditure of electricity in India is only about 1/4th of the world’s average. The demand for electricity is increasing rapidly and by 2032 it is estimated to be as high as 900 GW. With limited conventional energy resources, India is moving towards renewable generation program. The accustomed electricity power grids are unidirectional in which electricity flows from grids to the consumers. This system faces considerable technical, economical and also environmental issues. Transmission losses are very high in India hence, AT&C (Aggregate Technical and Commercial) loss reduction has become top priority of governments. II. PROBLEMS WITH EXISTING SYSTEM 1) Poor framework: The current system is obsolete and incapable of dealing with today’s demand. This results in frequent network congestions and in blackouts which are much more costly for utilities as they spread quickly due to the dearth of communication between grid and control centres. 2) Opacity: Transparency is required for customers to make proper decisions as per the market, so that they can minimize their usage during peak hours. ISSN: 2231-5381 Fig. 1. Transmission and distribution loss as a percentage of power output III. NECESSITY OF SMART GRID In today’s world when everything is dependent on electricity, power is a lifeline. This was witnessed by more than 620 million people in India by two successive power blackouts. All important services were halted which caused chaos everywhere. Apart from all inconveniences, there was a huge financial and productivity loss. In developing countries like India where power cuts are so common in regular life, many important places like hospitals, colleges etc. needs power backup to carry out their daily routine. According to New York Times “The country which is considered rising economic power, this massive electric grid failure was an embarrassing reminder how intractable problems are still plaguing India: inadequate infrastructure, crippling power shortage and yawning absence of government actions and leadership”. Smart Grid is the solution to solve all problems of energy from generation to distribution to utilization. Developed countries like the US have already started to switch to smart grid but it is a necessity for developing countries like India. Mr. Sam Pitroda, the chairman of India Smart Grid Task Force (ISGTF) said, “While it may be difficult to guarantee perfect power availability, in the current context, we can at least replace blackouts with the brownouts by providing a basic http://www.ijettjournal.org Page 173 International Journal of Engineering Trends and Technology (IJETT) - Volume 35 Number 4 - May 2016 threshold of power to all households, with which to run at least a few key appliances. IV.ARCHITECTURE The application of smart grid is to provide power utilities with digital intelligence to the power system network. The components of a smart grid are smart metering techniques, digital sensors, and intelligent control system. These per day. To manage these data, we apply the concept of BIG DATA. Big data is characterized by 3 V’s: 1) Volume - Organizations will collect information from a variety of sources. Earlier it was not possible to store this information but latest technologies have solved the problem of storing it. 2) Velocity – Data streams flow at very high speed and it must be dealt timely. RFID tags, sensors, and smart meters drive the need to face torrents of data in real time. 3) Variety – Data comes in various types like structure, numeric to unstructured texts, email, video, financial transactions & many more. VI. BIG DATA MANAGEMENT FOR SMART GRID Fig. 2. Smart grid architecture components together enable the two-way flow of energy from power to plug to be automated, monitored and controlled. Figure 2 represents the smart grid architecture. If we change the electric power infrastructures into two-way network built on a standard internet protocol (IP) network, then the alternative term used for the smart grid is ‘Energy Internet’. It is designed as a large number of smaller, discrete distributed plants instead of the single high producing plant. It reduces the risk of attacks and natural disasters. The smart grid is a self-healing network, which means that whenever a major problem occurs, it will restore itself quickly by isolating the particular line and re-routing the power supply. From beginning the integration of small-scale renewable energy source into a traditional grid has been a difficult task and the problems include voltage fluctuations and harmonic distortions, which require synchronization of the source with the grid. Smart grid facilitates the optimization of these problems by preventing outages and allowing consumers to manage energy uses, as a result of distributed generation and storage. This technology enables the various option to add energy to the grid at transmission and distribution level. On the other hand, the smart grid makes better use of renewable sources by providing more energy storage capabilities to absorb excess production and release when the wind and solar power dips. V. BIG DATA Smart grid provides two-way communication between customers and utilities using smart meters. A huge amount of data is exchanged between them. It is estimated that about 800 million smart meters would be installed worldwide by 2020 which will generate approximately 77 billion readings ISSN: 2231-5381 There are many different sources in the smart grid which generates data. These are power utilization pattern of users, phasor measurement data for situational awareness, energy usage information obtained by smart meters, energy market price to reduce the errors in state estimation, management and maintenance of data for devices in power generation, transmission & distribution as obtained by intelligent electronic devices, functional information for operating utilities and very large data sets not exactly received from the grid measurement but mostly used in decision making like weather and geographic information system data. In last few years, almost all major companies including IT giants like Oracle and IBM, grid giants like General Electric, Siemens have started to work on their big data project and are competing to bring a set of IT tools that are widely new to the utility industry. Big data needs more compelling techniques to process the huge volume of information within a limited time. It involves a number of disciplines like statistics, clustering algorithms, machine learning, signal processing and pattern recognition method. Presently, the most effective batch process-based big data tool is Apache Hadoop. It provides platforms for big data application in business and commerce. There are controversies in data capture, transmission, searching, sharing, and visualization. Data is increasing at exponential rates but the advancement in information processing method is comparatively slow. In most of the big data applications, the state-of-the-art techniques cannot elucidate the real-life problems. New frameworks are required to model uncertainty and predict the change of uncertainty. We also face major problems like data security, personal privacy, commercial secrets, network security and financial information protection. Globally, power utilities have divergence in the use of big data due to different business structures, social responsibility, etc. Having most operational data, most companies put the demand side management and user service in a higher priority. In general, power utilities are http://www.ijettjournal.org Page 174 International Journal of Engineering Trends and Technology (IJETT) - Volume 35 Number 4 - May 2016 cooperating with IT companies to develop big data. Big data will set a major impact on the management of power utilities due to past deployment of ICT. There are many challenges which affect the implementation of big data and smart grid. Major efforts have been spent to develop more advanced and efficient algorithm for data analysis. More illustrative projects are required to gain practical experience, standardize the design and deployment procedures and minimize risks from new regulations under a low carbon economy and green environment. TABLE I SMART GRID PROJECTS IN INDIA Location Implementing Agency Details Bengaluru BESCOM The USAID, Ministry of Power, the Central Power Research Institute, and Bangalore Electricity Supply Company have come together for a pilot project in Electronic City to cover around 17,500 domestic and business users. Delhi NDPL The U.S. Trade and Development Agency extended NDPL a grant of USD 0.6 million for a smart grid project in northwest Delhi intended to reduce blackouts and increase reliability. Mangalore MESCOM Initiated this project in December 2010 with the following objectives – load management and real-time metering for each of 250 installations, including industrial, residential, and street lighting Kolkata WBSEDCL First of its kind Smart Grid pilot in India that will pin-point power theft or unauthorized consumption in real-time basis. CONCLUSION Undoubtedly, the future belongs to the smart grid. The complete transition from the current system to the smart grid cannot be done instantaneously. It will take some time for all the technologies to be developed, components installed, and systems evaluated before it is buttoned up. Once perfected, the smart grid is likely to bring the same revolution that the internet has already brought to the way we live, work, play and learn. Utilities, in most of the developed countries, have accomplished a major breakthrough in terms of productivity, reliability and efficiency through the use of smart grid technology. On the other hand, Indian utilities are still lagging far behind when compared to other countries. At present, their main focus is on providing energy at an affordable rate but the day is not very far when the utilities would be focusing on encompassing sustainable use and environmental ISSN: 2231-5381 improvement into their agendas. And smart grids would play a crucial part in helping utilities in realizing this mission. So, the utilities would need to invest massively in new hardware, software, business process development, and staff training. A smart grid would play an indispensable role in addressing global issues like energy security and climate change. After all, a smart grid is not a luxury in India, it’s a necessity. 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