Design of an Open Platform for Real-Time Power Grid Monitoring (original) (raw)

A Grid Information Resource for Nationwide Real-Time Power Monitoring

IEEE Transactions on Industry Applications, 2004

A significant barrier to improving the power quality at industrial facilities is the lack of contemporaneous and historical power quality and reliability data. A new Web-enabled near-real-time power quality and reliability monitoring system, termed I-Grid, has been developed to provide such information on a nationwide basis. The ultralow-cost sensors record power events and send event data via the Internet to the system database servers using an internal modem. Data display, e-mail event notification, site administration, and summary reporting of the data are achieved via a Web browser. In cooperation with the U.S. Department of Energy, the Electric Power Research Institute, and leading utilities and manufacturers, the deployment of these sensors has begun, with a target deployment of 50 000 monitors across the U.S. and Canada over the next 2-4 years. This paper discusses the implementation of this grid information resource, and discusses data captured by the network since early monitors were deployed in 2001.

Online Monitoring Leads to Improve the Reliability and Sustainability of Power Grids

2019

The paper aims to address the concept of virtualized grid automation. This approach will be developed within a project by combining the application of data visualization techniques, sensor analysis tools, advanced energy measurement and ICT technologies to ensure the visibility and control of electricity grids. The development of advanced distributed processing solutions will solve time-critical issues.CEZ Romania wants to monitor online the distribution system for optimization of the grid operation at medium voltage (MV) and low voltage (LV). CEZ wants to have data from networks in real-timeand to be able to remotely optimize the operations. A set of advanced sensors will be deployed in the networks, connected using available communications networks to the service server located at the DSO premises. Appropriate control room displays will be connected to the services to display the results of the data analysis.We decided to start with an area with a high density of consumers, especi...

Towards more flexible and robust data delivery for monitoring and control of the electric power grid

School Elect. Eng. Comput …, 2007

With the increase in the monitoring of status data at very high rates in high voltage substations and the ability to time synchronize these data with GPS signals, there is a growing need for transmitting this data for monitoring, operation, protection and control needs. The sets of data that need to be transferred and the speed at which they need to be transferred depend on the applicationfor example, slow for post-event analysis, near real-time for monitoring and as close to real-time as possible for control or protection. In this paper, we overview the requirements for the next-generation power grid's communication infrastructure in the areas of flexibility and quality of service, with extensive citations of power industry practitioners and researchers, and analyze implementation options. We also overview technologies in the computer science field of distributed computing that can be brought to bear to help meet these requirements, yet to date have not been discussed in the context of grid modernization. Additionally, we argue against the industry trend of using either TCP/IP or web services for real-time data exchange for fast controls. We then describe GridStat, a novel middleware framework we have developed that is suitable for the power grid and its application programs. Test results demonstrate that such a flexible framework can also guarantee latency that is suitable for fast wide-area protection and control.

A Data Driven Framework for Real Time Power System Event Detection and Visualization

Abstract-Increased adoption and deployment of phasor measurement units (PMU) has provided valuable fine-grained data over the grid. Analysis over these data can provide real-time insight into the health of the grid, thereby improving control over operations. Realizing this data-driven control, however, requires validating, processing and storing massive amounts of PMU data. This paper describes a PMU data management system that supports input from multiple PMU data streams, features an event-detection algorithm, and provides an efficient method for retrieving archival data. The event-detection algorithm rapidly correlates multiple PMU data streams, providing details on events occurring within the power system in real-time. The eventdetection algorithm feeds into a visualization component, allowing operators to recognize events as they occur. The indexing and data retrieval mechanism facilitates fast access to archived PMU data. Using this method, we achieved over 30× speedup for queries with high selectivity. With the development of these two components, we have developed a system that allows efficient analysis of multiple time-aligned PMU data streams.

Experiences with and perspectives of the system for wide area monitoring of power systems

CIGRE/IEEE PES International Symposium, 2003

With the emphasis on higher utilization of power systems, monitoring of its dynamics is becoming increasingly important. This requires information with higher accuracy and update rates faster than those usually provided by traditional SCADA systems. In addition, it must be synchronized over a wider geographical area than that provided by traditional protection systems. The introduction of phasor measurement units as

Smart Transmission Grid Applications and Their Supporting Infrastructure

In this paper we assume that time synchronized measurements will be ubiquitously available at all high-voltage substations at very high rates. We examine how this information can be utilized more effectively for real-time operation as well as for subsequent decision making. This new information available in real time is different, both in quality and in quantity, than the real-time measurements available today. The promise of new and improved applications to operate the power system more reliably and efficiently has been recognized but is still in conceptual stages. Also, the present system to handle this real-time data has been recognized to be inadequate but even conceptual designs of such infrastructure needed to store and communicate the data are in their infancy. In this paper, we first suggest the requirements for an information infrastructure to handle ubiquitous phasor measurements recognizing that the quantity and rate of data would make it impossible to store all the data centrally as done today. Then we discuss the new and improved applications, classified into two categories: one is the set of automatic wide-area controls and the other is the set of control center (EMS) functions with special attention to the state estimator. Finally, given that the availability of phasor measurements will grow over time, the path for smooth transition from present-day systems and applications to those discussed here is delineated.

A Real-Time Open Access Platformtowards Proof of Conceptfor Smart Grid Applications

Journal of Communication, Navigation, Sensing and Services (CONASENSE)

This paper presents development of real time open access platform towards proof of concept of smart grid applications deployed at Smart Energy System Laboratory of Aalborg University. Discussed on the paper is the architecture and setup of the platform by elaborating the three main layers: electrical grid layer, ICT & network emulation layer and control layer. DiSC-OPAL, a toolbox built for OPAL-RT real time grid simulation; comprising of models for wide variety of controllable flexible assets, stochastic power sources for wind and solar power plants, real consumption data's and electrical grid components is presented. A detailed model description of the whole set up and the corresponding functionalities is characterized. To showcase real life application of the whole framework, an overview of two test cases implemented for European SmartC2Net project with focus on control and market integration of low voltage distribution grids is presented.

Situational Awareness of Power Systems Using Phasor Measurement Units (PMUs)

UNESCO 9th African Engineering Week organised by the Federation of African Engineering Organisations , 2023

Maintaining the stability and reliability of power grids is critical, and situational awareness (SA) is a key element in achieving such in power systems. Adopting Phasor Measurement Units (PMUs) in providing real-time monitoring and control of power systems is fundamental, sustainable, efficient, and commendable. This paper presents a comprehensive overview of PMU technology, its role in enhancing SA, and its impact on improving power system stability and efficiency. PMUs are sophisticated monitoring devices that offer high-speed and synchronized voltage and current phasors measurements: This enables power systems to be monitored and controlled in real-time. Our discussion covers the fundamental principles of PMU technology, its various applications, its implementation in power systems, and the challenges and limitations of its use. In addition, the paper explores current and future research on PMUs and highlights the benefits of their implementation, including enhanced reliability, improved security, better power quality, and increased efficiency. Through a detailed presentation of the capabilities and advantages of PMUs in power systems, we offer valuable insights for researchers, practitioners, and decision-makers in the power industry.

A Grid Computing Service for Power System Monitoring

Extensively interconnected power grid has been a long cherished dream of the power system engineers. Recently, the incredible publicity of smart grid has brought about a revolution in the way the power system’s operation and control functions are planned. However, attempts to interconnect power system grids have consistently resulted in failures, like cascaded failures, often leading to black-outs. Taking into account the real-time requirements to deal with power system diagnostic procedures, it is absolutely essential to have an effective and reliable monitoring of the entire system. In this paper, we have implemented the monitoring of Odisha power grid to fulfill the requirement of distinguished power system protection. This paper advocates the use of grid computing in power system monitoring. Even though, the Supervisory Control and Data Acquisition/Energy Management System (SCADA/EMS) system is presently being used for monitoring power systems; yet it has its boundaries. This paper proposes to use Grid Computing as a support to the existing SCADA/EMS based power system monitoring and control and demonstrates its applicability by means of a grid based synchronized power system monitoring system. Therefore mentioned system has been deployed in desktop computers with GridGain 2.0 as middleware.