Presented by: Rodrigo Daniel Trevizan
Energy Storage Systems (ESS) are an increasingly important asset in power grids, capable of providing several essential services to systems dominated by intermittent renewable energy resources. Such relevance turns ESS into a potential target for attacks. Some of their applications require these distributed devices to communicate with remote entities, such as grid operators, manufacturers and other field equipment, which poses a challenge for cybersecurity. This talk will present risks an overview of physical and cyberattacks on power grids, as well as current research, standards, and industry best practices that can make ESS more secure.
Free Replay on April 2nd (9PM EDT)
IEEE Smart Grid Socieity Participating members:
Presented by: Daiwon Choi and Vish Viswanathan
This webinar will be focused on reliability of electrochemical energy storage system (ESS) based on Li-ion batteries, which is currently the most widely deployed system. In this webinar, the authors focus on two specific areas, 1) fundamentals of Li-ion battery operation and degradation mechanisms, 2) examples of efficiency, performance and comparison of different Li-ion battery chemistries under standardized frequency regulation (FR), peak shaving (PS) and electric vehicle (EV) drive cycles. The lifecycle and degradation mechanisms derived from capacity, round trip efficiency (RTE), resistance, charge/discharge energy and total utilized energy of the battery chemistries will be compared. Performance and safety of electrical energy storage systems will also be addressed, reviewing applicable standards and gridscale storage data.
Presented by: Steven E. Collier, VP Business Development, Conexon
Inadequate electric grid capacity, reliability, stability, and quality of service have traditionally been addressed by expansion of utility network infrastructure, specifically generation, transmission, and distribution facilities (i.e., “wires” components). Environmental and other barriers, capital and O&M costs, and functional limitations increasingly inhibit their deployment and operational effectiveness. Nonutility distributed energy resources (DER), which are proliferating at an ever-increasing pace, can be helpful. These include wind generators, solar PV, combined heat and power (CHP), batteries, microgrids, premises energy management systems, smart appliances and equipment, even conservation and energy efficiency. To leverage these, new utility and nonutility monitoring and control systems (e.g., demand side management or DSM, automated distribution management systems or ADMS, and DER management systems or DERMS) are being deployed. Utilization of these and other new components and systems can reduce or even eliminate the need for additional utility wires infrastructure. Learn about these non-wires alternatives (NWA) and how they may change the planning, construction, and operation of the electric utility grid.
Part 1: Why NWA are needed
Part 2: Examples of NWA and how they work
Presented by: Mike Zhou, Chief Scientist, State Grid EPRI China
A new fast online analysis system development project, sponsored by the State Grid of China, was started in 2006. The primary goal of the project was set to reduce the online analysis overall round-trip time, from data acquisition to complete the analysis, from the current proximate 10 minutes to less than 60 seconds. The project development work has been completed at the end of 2018. A pilot new online analysis system has been deployed and running in a provincial dispatching center in China. The preliminary testing data indicates that the new online analysis system can achieve sub-second response speed.
Digital Twin (DT) has been in the Gartner’s Top 10 Strategic Technology Trends list every year since 2017. In the project development, an Online Analysis Digital Twin (OADT) has been implemented. In this presentation, the DT concept will be introduced in the context of application to power grid online analysis. A high-level overview of the project and some of the preliminary performance testing results will be presented. The overview will include the project high-level solution architecture, the DT concept used in framing the solution architecture, the OADT implementation to support the solution architecture realization, and the pilot online analysis system implementation details.
Presented by: Rui Yang, Research Engineer, National Renewable Energy Laboratory
Increasing amounts of heterogeneous sensor data and information are becoming available in energy grids from sources such as smart meters, distributed generation, and smart home energy management systems. Being able to collect, curate, and create actionable information with these data will be crucial to power systems operations with the increasing penetrations of distributed energy resources. In this webinar, we will present NREL’s latest work on developing predictive analytics to facilitate the real-time decision making in power systems operations. In this work, a high-precision predictive state estimator is first developed which employs sparse measurement data to provide system-wide awareness in distribution systems, while traditional state estimation techniques have difficulty coping with the low- observability conditions often present on the distribution systems due to the paucity of sensor measurements. Based on the predicted system conditions, grid operators can proactively control all the flexible resources by employing coordinated optimization techniques. The developed technologies allow grid operators to manage power systems with lean reserve margins while maintaining and enhancing grid reliability with high penetrations of renewable energy resources.
Presented by: Grace Gao, University of Illinois at Urbana-Champaign, Sriramya Bhamidipati, Doctoral student - Aerospace Engineering Department, University of Illinois at Urbana-Champaign, and Tara Yasmin Mina, Graduate student - Electrical and Computer Engineering Department, University of Illinois at Urbana-Champaign
In the future Smart Grid, Phasor Measurement Units (PMUs) will monitor the power grid state in real-time by synchronizing measurements across the network using GPS. However, because civilian GPS is unencrypted, PMUs are susceptible to spoofing. This webinar presents a spoofing detection algorithm using a wide-area, hybrid communication architecture: Each PMU securely transmits conditioned signal fragments containing the military P(Y) signal, which serves as an encrypted signature in the background of all authentic GPS signals. This signature is then verified amongst several, distant receivers, strategically picked with a subset selection algorithm. The algorithm has been demonstrated to successfully evaluates the authenticity of a widely dispersed receiver network, using real- world data recorded during a government-sponsored, live-sky spoofing event.
Presented by: Qun Zhou, Assistant Professior, University of Central Florida
Deep learning is powerful in data-driven applications, such as computer vision and natural language processing. Power system state estimation is data-driven in nature as the amount of measurement data is rapidly increasing with emerging sensing technology. This research explores the possibility of applying deep learning for power system state estimation. The proposed adaptive hybrid deep learning model, which incorporates the physical power flow mode, is both data driven and first principle based. It is trained in real time and intended for online state estimation.
Conventional state estimation is considered as single-snapshot, which estimates system variables by only using the measurement data at the moment. In fact, power system states are intrinsically correlated in time, but the true dynamics are very challenging to model. In this research, deep learning is employed to learn this dynamics and temporal correlations are explored among historical measurements. Two deep learning networks, feedforward neural net and long short-term memory net, are investigated. Results are presented in IEEE 14-bus and118-bus systems in terms of accuracy and robustness. The applicability and potential challenges are discussed.
Qiuhua Huang, Pacific Northwest National Laboratory
Jason Hou, Pacific Northwest National Laboratory
Part II of this webinar will focus on the-state-of-the-art applications with some R&D work from Pacific Northwest National Laboratory as examples. These include PMU data analytics, uncertainty quantification(UQ), tie-line exchange prediction, adaptive Remedial Action Scheme (RAS) settings using machine learning, power system emergency control using deep reinforcement learning, which powered AlphaGo to beat human Go champions. The ultimate goal of these projects is to leverage state-of-the-art machine learning technologies to make decision-makings in power system control centers—the “brain” of the grid— adaptive, robust and smart.
Qiuhua Huang, Pacific Northwest National Laboratory
In Part I, this webinar will begin with a short tutorial of machine learning, then provide an overview of application of machine learning in power generation, transmission and distribution systems, including the history, recent applications and lessons learned. Lastly, future work and research directions will be discussed.
Subhonmesh Bose, Assistant Professor, University of Illinois at Urbana-Champaign
Scalability is the fundamental challenge in the design of algorithms for monitoring, controlling, and optimizing the assets of a power system. Adoption of distributed energy resources (DERs) is adding to the number of controllable devices. Integration of variable renewable production from wind and solar is making it necessary to account for multiple different scenarios in making dispatch decisions with uncertain supply. Addition of phasor measurement units and automated metering infrastructure is leading to the collection of a large amount of data that needs processing to provide meaningful information. Thus, system operations today require algorithms that are able to synthesize large volumes of data, produce actionable decisions within reasonable runtimes, and do so with provable performance guarantees. In this talk, an overview of the design challenges in solving large-scale optimization problems in power system operation will be presented, how these problems are compounded by the evolving landscape of the power grid, and various approaches to address them.
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