P. Ponni Shanmuga Priya

Bio: P. Ponni Shanmuga Priya is an academic researcher from Pondicherry Engineering College. The author has contributed to research in topics: Smart grid & WiMAX. The author has an hindex of 1, co-authored 1 publications receiving 10 citations.

Performance analysis of WiMAX based Smart grid communication traffic priority model

Abstract: The ever-increasing demand of electrical energy makes it necessary to develop an efficient load demand management system for the electricity grids so that it gets converted into Smart grid. There are several standardized wireless communication technologies available for various smart grid applications among which (WiMAX) is seen as a well recognized technology able to fulfill the requirements of smart grid's applications namely wide area connectivity and the quality of service (QoS) differentiated services. This paper proposes a WiMAX based traffic priority model for smart grid connecting Neighborhood Area Network (NAN) and Home Area Network (HAN) serving five different applications. Parameters namely overall network delay, throughput and network capacity are studied using OPNET 14.5 and also the implications of the cell size, number of users and interpolling interval (IPT) are analyzed.

Optimized WiMAX Profile Configuration for Smart Grid Communications

Abstract: Worldwide interoperability for microwave access (WiMAX) is one of the wireless communication technologies adopted for communication in smart grids. Due to the inherent differences between smart grid and mobile broadband applications, it is important to adjust planning and deployment of wireless technologies, including WiMAX. To this end, WiMAX is being amended to feature a smart grid system profile known as WiGrid. In this paper, we investigate the optimized configuration of this WiGrid profile, i.e., the choice of frame duration, type-of-service to traffic mapping, scheduling strategies, as well as the system architecture, such that smart grid communication requirements are met. The simulation-based evaluation of WiGrid networks with optimized configurations is facilitated through a newly developed WiGrid module for the network simulator-3 environment. Our results indicate that a priority-based scheduler is an appropriate solution for scheduling time-critical smart grid applications. Furthermore, schedulers should be implemented in such a way that grant sizes smaller than the packet size are avoided, and adjusting the uplink/downlink bandwidth ratio to favor uplink traffic is important to achieve the required latency defined for smart grid applications.

Communication Technologies for Smart Grid: A Comprehensive Survey

Abstract: With the ongoing trends in the energy sector such as vehicular electrification and renewable energy, smart grid is clearly playing a more and more important role in the electric power system industry. One essential feature of the smart grid is the information flow over the high-speed, reliable and secure data communication network in order to manage the complex power systems effectively and intelligently. Smart grids utilize bidirectional communication to function where traditional power grids mainly only use one-way communication. The communication requirements and suitable technique differ depending on the specific environment and scenario. In this paper, we provide a comprehensive and up-to-date survey on the communication technologies used in the smart grid, including the communication requirements, physical layer technologies, network architectures, and research challenges. This survey aims to help the readers identify the potential research problems in the continued research on the topic of smart grid communications.

Cyber-physical test platform for microgrids: Combining hardware, hardware-in-the-loop, and network-simulator-in-the-loop

Abstract: This paper presents a cyber-physical testbed, developed to investigate the complex interactions between emerging microgrid technologies such as grid-interactive power sources, control systems, and a wide variety of communication platforms and bandwidths. The cyber-physical testbed consists of three major components for testing and validation: real time models of a distribution feeder model with microgrid assets that are integrated into the National Renewable Energy Laboratory's (NREL) power hardware-in-the-loop (PHIL) platform; real-time capable network-simulator-in-the-loop (NSIL) models; and physical hardware including inverters and a simple system controller. Several load profiles and microgrid configurations were tested to examine the effect on system performance with increasing channel delays and router processing delays in the network simulator. Testing demonstrated that the controller's ability to maintain a target grid import power band was severely diminished with increasing network delays and laid the foundation for future testing of more complex cyber-physical systems.

WiMAX for data aggregation in smart grid communication network—A review

Abstract: In Smart grid network, number of smart meters and other electronic devices such as sensors will generate large quantity of data. Secure and reliable aggregation of this data to the utility center is necessary for monitoring of wide area network and various control functions. This data will also be utilized to determine the overall grid status within appropriate time. Hence secure, reliable, efficient, robust data communication network is important in smart grid. Various wireless communication standards like WiMAX, GSM, GPRS, and UMTS cellular communication, LTE, ZigBee, Bluetooth, and WLAN etc. are experimented to develop smart grid communication network for distribution system. In this paper, we present an overview of work done by the researchers using WiMAX as a good choice of technology for smart grid communication network.

Optimized Data Acquisition Point Placement for an Advanced Metering Infrastructure Based on Power Line Communication Technology

Abstract: Different communication technologies have been suggested for developing the smart grid communication network. Among these communication technologies, power line communication (PLC) has widely been used, as it has a large coverage range and can access remote areas using existing infrastructures. In this paper, we derive a mathematical model for devising an advanced metering infrastructure (AMI) in the distribution grid based on PLC technology. In order to collect the traffic from thousands of smart meters, intermediary data collectors are placed on selected distribution transformers. However, an optimized placement of data collectors is necessary in order to meet the strict latency requirements needed for time-critical traffic from the meters. For this, we first formulate the latency based on the medium access characteristics of the powerline intelligent metering evolution standard. We then propose an optimization platform for efficiently placing data collectors in such a way that the reliability requirement for the smart grid traffic is ensured and also the installation cost is minimized. We apply the devised optimization solution to realistic examples of AMIs, and we show the effectiveness of our approach through numerical performance evaluation.