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| 09-04 | Planning, Markets and Investment in the Electric Supply Industry
On March 7, 2008, an executive forum conducted by PSERC, focused on the role and structure of the planning needed to elicit needed investment in the power system. The participants, some 23 senior electricity industry managers, were divided into five groups. Each group was composed of individuals from organizations deemed to have similar institutional, economic and geographic circumstances. This report summarizes the discussions among these groups.
PSERC Final Report for project M-16. Uploaded: July 6, 2009. | Richard E. Schuler, Project Leader | 10/27/2009 | 96.0k | PDF |
| 09-05 | Characterization of Composite Cores for High Temperature-Low Sag (HTLS) Conductors
New conductors that employ high strength light weight composite cores are being introduced in the electric power system to address the complex problems associated with increasing electric power transmitted with minimal new construction in existing right-of-ways. Two of these conductors are: aluminum carbon composite conductors (ACCC) and aluminum conductor composite reinforced (ACCR) conductors. The ACCR conductor uses a metal matrix core and the ACCC conductor uses a carbon composite core. Composite cores have a higher strength and lower coefficient of thermal expansion when compared with the steel core used in traditional aluminum conductor steel reinforced (ACSR) conductors. The effect of the temperature distribution on the current carrying capacity of these conductors is not known. The objective of this study is to model the radial temperature distribution and its effect on current carrying capacity in bare overhead ACCC and ACCR conductors. This study develops a method to calculate the radial temperature distribution in composite (ACCC & ACCR) conductors.
PSERC Final Report for project T-33. Uploaded: July 6, 2009. | Ravi Gorur, Project Leader | 10/23/2009 | 1.4M | PDF |
| 09-07 | Economic Impact Assessment of Transmission Enhancement Projects
In this project, we propose a new methodological framework for assessing the economic impact of transmission investment. This framework improves on the current state of art by explicitly modeling strategic responses of generators to transmission investments. Using an economic measure of social benefit, results show that transmission planning should lead rather than follow generation investments. As a result, transmission investments should be treated as infrastructure development in the same general way that roadway investments are used for regional development. An example of such a policy is the Competitive Renewable Energy Zones in Texas for providing transmission that attracts wind generation investment to specific geographic areas. The project developed a game theoretic framework employing a three-stage game for assessing economic value of transmission projects. A paper resulting from this project won the Best Paper in Energy 2008 Award from the Institute for Operations Research and the Management Sciences. Illustrations in the report help explain the motivation for model development and explain the results.
PSERC Final Report for project M-14. Uploaded: September 2, 2009. | Shmuel Oren, Project Leader | 12/1/2009 | 550.6k | PDF |
| 09-08 | Development and Evaluation of System Restoration Strategies from a Blackout
System restoration following a blackout is one of the most important tasks for power system operators. However, few on-line computer tools are available to help operators complete that task in real-time. Indeed, most power system operators rely on off-line restoration plans developed for selected scenarios of contingencies, equipment outages, and available resources. Since the details of an actual blackout are hard to predict in the planning stage, a restoration plan can only serve as a guide in an actual system restoration situation. In this research, we used novel approaches to transmission and distribution system restoration to design modules that can be used in an on-line decision support tool. Using such a tool, once fully developed and tested, operators will be better able to adapt to changing system conditions that occur during an actual restoration.
Final report for PSERC project S-30. Uploaded Sep. 11, 2009. | Chen-Ching Liu, Project Leader | 12/7/2009 | 1.7M | PDF |
| 09-09 | Facilitating Environmental Initiatives While Maintaining Efficient Markets and Electric System Reliability
Emerging environmental policies to reduce CO2 emissions will raise a number of challenges for the electric power industry as it continues to maintain a reasonably priced and reliable supply of electricity. Careful analysis of the implications of those environmental policies is warranted because of the effects they could have on retail prices, on the system-wide cost of operation, on reliability, and on emissions of all pollutants. This study focused on a particular environmental policy: cap-and-trade. We used an economic/engineering model of the power system in the northeastern United States as the conceptual framework for analyzing the impact of environmental regulation of CO2. In our study, we conducted simulations using a 2007 power system with network reduction to capture both power flows and voltage constraints, thereby enabling 'stress testing' of the current power system. Our analyses led to a number of conclusions about the effects of cap-and-trade policy on the electric power industry.
Joint report from PSERC project M-20 and the Consortium for Electric Reliability Solutions (CERTS): Uploaded October 27, 2009. | William Schulze, Project Leader | 10/27/2009 | 693.8k | PDF |
| 09-10 | Impact of Increased DFIG Wind Penetration on Power Systems and Markets
This project examines the impact of increased penetration of doubly fed induction generator (DFIG) based wind generation on power system dynamic performance and hence reliability. DFIG wind turbines have controls that effectively isolate the inertia from the grid. In addition, large wind farms are typically connected to the grid at lower voltage levels resulting in higher fault currents. As a result, with the increase in penetration of wind generation, transient stability, the overall frequency response, regulation, voltage response, fault ride-through capability, and load following capability may be affected. This project analyzes the impact of increased wind penetration under two different scenarios: a) Increased wind penetration with concomitant displacement of aged conventional generation and b) Increased wind penetration without any decrease in existing conventional generation and determine conditions and conditions under which the increased wind penetration will result in violation of reliability criteria. The important aspects (such as low voltage ride through (LVRT), dynamic reactive compensation as per the requirements of FERC standards) are also studied. The effects of increased wind penetration on frequency stability are analyzed and solutions to mitigate the resulting problems are explored.
Final PSERC report for project S-34: Uploaded Oct. 27, 2009. | Vijay Vittal, Project Leader | 12/7/2009 | 2.5M | PDF |
| 09-11 | Integration of Asset and Outage Management Tasks for Distribution Application
This study looked at two ways to improve the reliability of a distribution system. One is to improve the performance of outage management tasks so that the impact of faults can be minimized. The second way is to improve the performance of asset management tasks so that failures occur less frequently and the fault is “prevented”. This study explores the technologies available for both asset management and outage management tasks by addressing the following issues: lack of data, ineffective processing of faults and maintenance scheduling caused by inefficient use of operational data, and independent planning and operation of asset and outage management tasks. The approaches implemented in this project have been implemented on the distribution system model connected to a bus in an IEEE reliability test system. The result shows that the frequency and duration of faults decrease and system reliability improves as a result of the proposed technology deployment and tool improvements.
Final report from PSERC project T-36: Uploaded Oct. 27, 2009. | Mladen Kezunovic, Project Leader | 12/7/2009 | 763.6k | PDF |
| 09-12 | Power System Level Impacts of Plug-In Hybrid Vehicles
The impact of PHEVs on the power grid is investigated. The methodology for this investigation is based on three procedures: (a) typical utilization of PHEVs that capture human habits and terrain on which cars are driven for the purpose of evaluating the energy consumption and split between electric and gas, (b) simulation of the electric infrastructure (distribution systems) and the loading patterns that results from PHEV deployment and the effects on the equipment and in particular the expected life of transformers, (c) impact of PHEV deployment on energy resource utilization in the power grid, and (d) impact of PHEV deployment on the operations and the security of the power grid. Proper models are utilized that capture all the interactions of the complex system that comprises the power grid, the distribution system and the PHEVs.
Final report for Project T-34: Uploaded October 23, 2009. | Sakis Meliopoulos, Project Leader | 12/7/2009 | 3.7M | PDF |
| 09-13 | Integrated Financial and Operational Risk Management in Restructured Electricity Markets
In the restructured electric power industries, how to manage the extremely high price volatility in the electricity wholesale markets has been a crucial factor to the smooth and viable business operations of all parties, including independent power producers, system operators and load serving entities and the likes. Compounded with the price risk, quantity, or volumetric, risk that arises from demand uncertainty due to weather conditions and load migration, presents major challenges and opportunities for the above mentioned market participants. The financial exposures to these two sources of risk that could result in severe financial losses are amplified by the positive correlation between load and price, which prevails in electricity markets. Therefore, managing these risks is essential to the financial success of participants in the electricity industry. This project investigates the integration of financial and operational risk management mechanisms to facilitate market operations and enhance market efficiency in the restructured electricity industry. Financial and operational hedging strategies utilizing existing standard and prospective instruments have been studied. This work has developed methods for pricing such instruments and assessing their effectiveness.
Final report from PSERC project M-17: Uploaded Oct. 27, 2009. | Shijie Deng, Project Leader | 12/7/2009 | 6.9M | PDF |
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