Executive Summary from the PSERC Final Report for Project S-17. Uploaded February 9, 2011.

This is the final project report for research on Transformer Overloading and Assessment of Loss-of-Life for Liquid-Filled Transformers in electric power systems. This subject has been addressed by many researchers and standards over the years, however, still with no clear consensus. There are several areas where the addition of more advanced sensor and monitoring technology can improve the remaining life expectancy estimations. This research developed an optimization methodology to minimize the cost and select the proper transformer size for new applications and to optimize the replacement of transformer for an existing system (retrofit applications). It is anticipated that the method described here will help utilities in making decisions to minimize revenue requirements of the transformer over the long run to attain overall economic efficiency.

PSERC Final Report for Project T-25. Uploaded April 19, 2011.

Predictions of dynamic performance in power systems often require computationally intensive software simulations of vast numbers of scenarios, with dependence on large numbers of inputs and parameters that are uncertain.  In this context, each simulation study 'run' represents one sample of behavior for a particular set of conditions and parameters values across the time steps of the simulation. The overall goal is typically one of ensuring acceptable behavior over a wide range of parameter values and conditions, typically over some time period of interest.  Traditional methods of sampling over uncertain parameters, such as Monte Carlo simulations, become prohibitively costly.  The work in this project explored methods of probabilistic collocation (PCM) as a means to greatly reduce the number of input parameter possibilities to be sampled, while still producing good approximations of the behavior of output of interest.  Examples of output quantities of interest would include load bus voltages, generator frequencies, power flows, or even the computed impedance 'seen' from a set of relay measurements, to determine if the relay enters its zone of operation.

PSERC Final Report for Project S-17. Uploaded: April 19, 2011.

Executive Summary of PSERC Final Report for Project T-40. Uploaded Sept. 7, 2011.

Studying the impact of Plug-in Hybrid Electric Vehicles (PHEVs) and Battery Electric Vehicles (BEVs) is complex because these technologies provide dispersed and yet mobile energy storage that can be aggregated at different scales. This report focuses on how PHEVs/BEVs, as dynamically configurable, dispersed energy storage, can create multiple benefits in electricity networks while playing a major role in transportation networks. Two important issues addressed in this study for the development of PHEV/BEV infrastructure were the “ smart garage location problem” and “ charging station installation problem” . A model was developed to investigate the impact of aggregated PHEV/BEV on electricity power networks and on the parking garage developer’ s decisions. Communications is essential to enable smart control in either mode. Controlled charging/discharging of PHEVs/BEVs in public parking spaces or parking garages in business districts would facilitate aggregation to provide ancillary services. The net benefits to the PHEV/BEV owner and the electricity system could be significant to the extent that the communications and telemetry costs are fairly small, and the effect of providing ancillary services on battery lifetime is negligible.

PSERC Final Report for Project T-40. Uploaded Sept. 7, 2011

Part 1 of the PSERC project Implications of the Smart Grid Initiative on Distribution Engineering.

PSERC Final Report Part 1 of 4 for Project T-41. Uploaded Sept. 8, 2011.

Part 2 of the PSERC project Implications of the Smart Grid Initiative on Distribution Engineering.

PSERC Final Report Part 2 of 4 for Project T-41. Uploaded Sept. 8, 2011.

Part 3 of the PSERC project Implications of the Smart Grid Initiative on Distribution Engineering.

PSERC Final Report Part 3 of 4 for Project T-41. Uploaded Sept. 8, 2011.

Part 4 of the PSERC project Implications of the Smart Grid Initiative on Distribution Engineering.

PSERC Final Report Part 4 of 4 for Project T-41. Uploaded Sept. 8, 2011.

The goal of this project was to perform validation of the transient stability packages used for Bonneville Power Administration (BPA) system analysis. It is commonly thought that different transient stability packages can give different results for the same system conditions. This project is just focused on validating the packages against each other, as opposed to with real world data. The ultimate aim of this was to enhance the utilization of the BPA transmission system by using validated, real-time transient stability analysis, and to have better planning/study tools and models.

PSERC Final Report for Project S-43G. Uploaded: October 3, 2011.

Executive Summary from the Final Report for Project S-43G. Uploaded: October 3, 2011.

Executive Summary from Parts 1 and 2 for Final Project Report S-38. Uploaded: November 9, 2011.

This project addresses five elemental aspects of analysis for the enhanced performance of on-line dynamic security assessment. These five elemental components include: a) A systematic process to determine the right-sized dynamic equivalent for the phenomenon to be analyzed, b) Employing risk based analysis to select multi-element contingencies, c) Increased processing efficiency in decision-tree training, d) Using efficient trajectory sensitivity method to evaluate ability for changing system conditions, and e) Efficient determination of the appropriate level of preventive and/or corrective control action to steer the system away from the boundary of insecurity. This report covers Parts I and II of the S-38 project report: (1) Part I:  Determination of the right-sized dynamic equivalent and (2) Part II:  Trajectory sensitivity analysis to determine stability limits under changing system conditions.

Parts 1 and 2 for Final Project Report S-38. Uploaded: November 9, 2011.