The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Automatic train supervision (ATS) systems are designed to improve the reliability of train services. An ATS system coordinates the trains and other systems in a metro and records alarms if faults occur. In this work, we propose a context-aware anomaly diagnosis tool to analyze the underlying causes of alarms for ATS system. Using 61-day data collected from an operational ATS system, we apply our diagnosis...
The components and systems involved in railway operation are subject to stringent reliability and safety requirements, but up until now the cyber security of those same systems has been largely under-explored. In this work, we examine a widely-used railway technology, track beacons or balises, which provide a train with its position on the track and often assist with accurate stopping at stations...
Analyzing the impact of cyber-physical attacks is important for railway operators to help them in assessing and prioritizing their efforts of securing the infrastructures. Since railways consist of several complex cyber-physical systems operating in tandem, it is difficult to assess the impact of an attack without a simulator. Commercially available simulators are intended to support operational design...
The transformation of traditional power systems to smart grids brings significant benefits, but also exposes the grids to various cyber threats. The recent effort led by US National Electric Sector Cybersecurity Organization Resource (NESCOR) Technical Working Group 1 to compile failure scenarios is an important initiative to document typical cybersecurity threats to smart grids. While these scenarios...
Graph-based assessment formalisms have proven to be useful in the safety, dependability, and security communities to help stakeholders manage risk and maintain appropriate documentation throughout the system lifecycle. In this paper, we propose a set of methods to automatically construct security argument graphs, a graphical formalism that integrates various security-related information to argue about...
Before a building can participate in a demand response program, its facility managers must characterize the site's ability to reduce load. Today, this is often done through manual audit processes and prototypical control strategies. In this paper, we propose a new approach to estimate a building's demand response capacity using detailed data from various sensors installed in a building. We derive...
Modern smart meters commonly provide a service switch which allows remote connection or disconnection (RCD) of electrical service over a utility's communication network. While this feature is valuable for utilities, researchers have raised concerns about possible (ab)use by malicious attackers, noting the high economic cost of blackouts, as well the potential for controlled on-off switching of meters...
This study aims to investigate the synergetic benefit of wind power and plug-in electric vehicles (PEVs) to the power system and to each other. We consider the integration of wind power and intelligent charging of PEVs into the wholesale electricity market of the New York Control Area (NYCA). We use a data-based two-settlement energy market model for the NYCA and a commuter transportation model for...
This study proposes an intelligent PEV charging scheme that significantly reduces power system cost while maintaining reliability compared to the widely discussed valley-fill method of aggregated charging in the early morning. This study considers optimal PEV integration into the New York Independent System Operator's (NYISO) day-ahead and real-time wholesale energy markets for 21 days in June, July,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.