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.
With high penetration of renewable generation, power system operations need additional ramping capability to follow the change of renewable generation. However, without proper unit commitment in the forward energy scheduling process, the system may not have sufficient ramping capability in the real time operation when renewable generation varies while system load is sharply pulling up or ramping down...
This paper presents a dynamic multi-input multi-output (MIMO) model of PEM fuel cells and a nonlinear control approach appropriate for this model based on exact linearization. Since large deviations of pressures between anode and cathode gases can cause severe membrane damage in fuel cells, it is necessary to design a corresponding controller so that the deviation can be kept as small as possible...
A time-to-market of mobile application software is usually very short and it causes unstructured mobile application software. In this paper, we defined a common architecture for mobile application software which is named as Application Framework to support agile software development. The framework is defined following PIM (Platform Independent Model) in MDD (Model Driven Development) to satisfy the...
This paper provides an update on a composite load model development in Western Electricity Coordinating Council (WECC). A composite load model structure is described. The two salient features of the new load model are: (a) the model recognizes electrical distance between the transmission bus and the end-uses and (b) the model represents the diversity in composition and dynamic characteristics of various...
This paper summarizes the key results of testing work performed by three organizations (EPRI, SCE, and BPA) on a total of twenty seven air conditioning units in order to better understand and thus characterize their behavior for power system simulations. The diversity of the tested air conditioner units included sizes (tonnage), compressor technology (reciprocating and scroll), type of refrigerant...
This paper discusses the development of a load component database for household appliances and office equipment. To develop more accurate load models at both the transmission and distribution levels, a better understanding of the behaviors of home appliances and office equipment associated with the variations of the power system voltage becomes more and more critical. The Bonneville Power Administration...
Evenly-spaced data with missing values was processed using power spectral density and autoregressive moving-average methods. Auto-Regressive Moving Average (ARMA) models were developed to represent field tillage patterns for a drill, a drag/harrow, chisel or NH3 applicator, and disk tools.
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.