Mini S. Thomas

Bio: Mini S. Thomas is an academic researcher from Jamia Millia Islamia. The author has contributed to research in topics: Smart grid & IEC 61850. The author has an hindex of 16, co-authored 100 publications receiving 908 citations. Previous affiliations of Mini S. Thomas include Indian Institute of Technology Delhi & Central University, India.

Reliable, Fast, and Deterministic Substation Communication Network Architecture and its Performance Simulation

Abstract: A highly reliable, fast, and deterministic communication network is required to support time-critical real-time monitoring, protection, and control functions of the substation automation systems (SAS). This paper proposes an Ethernet-based logical architecture for the substation communication network (SCN). Improved reliability, availability, and survivability of the SAS are demonstrated through the unique architectural features of this SCN, whereas the end-to-end (ETE) time-delay performance of the SCN architecture is evaluated with the help of simulation. The optimized network engineering tool modeler is used for modeling and simulation of the various nodes of the SCN and the communication traffic according to IEC 61850, the International Electrotechnical Commission's (IEC) standard for Communication Networks and Systems for Substation.

Design, development, and commissioning of a supervisory control and data acquisition (SCADA) laboratory for research and training

Abstract: This paper reports a state-of-the-art Supervisory Control and Data Acquisition (SCADA) Laboratory facility for power systems at Jamia Millia Islamia, New Delhi, India. It has been designed to function as a research and training center for utilities, faculty members, and students. This paper covers the design, commissioning, and functioning of the SCADA/EMS laboratory facility, based on distributed-processing technology. The SCADA laboratory will provide hands on experience to students and practicing engineers and will give them an insight into the contemporary SCADA systems. This lab is the first of its kind to be functional in India.

Power System SCADA and Smart Grids

Abstract: Power System SCADA and Smart Grids brings together in one concise volume the fundamentals and possible application functions of power system supervisory control and data acquisition (SCADA). The text begins by providing an overview of SCADA systems, evolution, and use in power systems and the data acquisition process. It then describes the components of SCADA systems, from the legacy remote terminal units (RTUs) to the latest intelligent electronic devices (IEDs), data concentrators, and master stations, as well as: Examines the building and practical implementation of different SCADA systems Offers a comprehensive discussion of the data communication, protocols, and media usage Covers substation automation (SA), which forms the basis for transmission, distribution, and customer automation Addresses distribution automation and distribution management systems (DA/DMS) and energy management systems (EMS) for transmission control centers Discusses smart distribution, smart transmission, and smart grid solutions such as smart homes with home energy management systems (HEMs), plugged hybrid electric vehicles, and more Power System SCADA and Smart Grids is designed to assist electrical engineering students, researchers, and practitioners alike in acquiring a solid understanding of SCADA systems and application functions in generation, transmission, and distribution systems, which are evolving day by day, to help them adapt to new challenges effortlessly. The book reveals the inner secrets of SCADA systems, unveils the potential of the smart grid, and inspires more minds to get involved in the development process.

Remote Control

Abstract: Power engineering today is an amalgam of the latest techniques in signal processing, wide area networks, data communication, and advanced computer applications. The advances in instrumentation, intelligent electronic devices (IEDs), and Ethernet-based communication media, coupled with the availability of cheaper automation products and the standardization of communication protocols, have led to the widespread automation of power systems, especially in the transmis sion and distribution sector.

Comprehensive Control for Microgrid Autonomous Operation With Demand Response

Abstract: Several situations in a microgrid (MG) cause unbalances leading to voltage and frequency variations. Conventionally MG power balance is ensured by storage battery units along with unscheduled load shedding. This paper presents control and management strategies to coordinate MG resources including generation, smart electric vehicles, and loads for frequency and voltage regulation to achieve optimal autonomous operation. MG control is designed in two layers of network, i.e., neighbour area network (NAN) and house area network (HAN). MG central controller operates at NAN layer, local load controllers operate at HAN layer, and smart electric vehicle controllers operate at both NAN and HAN layers. Two strategies—comprehensive control (CC) and vehicle aided CC—are developed and implemented in 11/0.4 kV urban residential four-feeder distribution system operating as MG. Both strategies enable calculative load manipulation for demand response (DR) considering customer load priority, thus maximizing customer satisfaction. The simulation results validate the proposed strategies providing frequency regulation and DR for MG autonomous operation. The proposed control and management strategy also provides an on-line tool for household maximum demand allocation and load management.

A review of islanding detection techniques for renewable distributed generation systems

Abstract: Islanding detection of distributed generations (DGs) is one of the most important aspects of interconnecting DGs to the distribution system. Islanding detection techniques can generally be classified as remote methods, which are associated with islanding detection on the utility sides, and local methods, which are associated with islanding detection on the DG side. This paper presents a survey of various islanding detection techniques and their advantages and disadvantages. The paper focused on islanding detection using a conventional and intelligent technique. A summary table that compares and contrasts the existing methods is also presented.