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| 08-01 | Agent-Based Test Beds for Power Industry Research, Teaching and Training
PSERC Tele-Seminar slides, February 5, 2008.
Wholesale power markets are complex systems encompassing structural constraints, institutional arrangements, and the behavioral dispositions of human participants. To be compelling and useful, studies of such systems must take all three elements into proper account. This talk will discuss the potential usefulness of agent-based test beds as research, teaching, and training tools for the exploratory study of wholesale power markets. | Leigh Tesfatsion | 3/31/2008 | 781.0k | PDF |
| 08-02 | An Online Dynamic Security Assessment Scheme Using Phasor Measurements and Decision Trees (Project S-27)
PSERC Tele-Seminar Slides, February 19, 2008
This talk describes an online dynamic security assessment scheme for large-scale interconnected power systems using phasor measurements and decision trees which was developed as a part of the PSERC project S-27. The scheme builds and periodically updates decision trees offline to decide critical attributes as security indicators. Decision trees provide online security assessment and preventive control guidelines based on real-time measurements of the indicators from phasor measurement units. The scheme uses a new classification method involving each whole path of a decision tree instead of only classification results at terminal nodes to provide more reliable security assessment results for changes in system conditions. The approaches developed are tested on a 2100-bus, 2600-line, 240-generator operational model of the Entergy system. The test results demonstrate that the proposed scheme is able to identify key security indicators and give reliable and accurate online dynamic security predictions. | Vijay Vittal | 5/9/2008 | 820.6k | PDF |
| 08-03 | The Efficiency of Uniform-Price Electricity Auctions: Evidence from Bidding Behavior in ERCOT
PSERC Tele-Seminar slides, March 4, 2008
Recent empirical analyses by both economists and engineers suggest that power market auction mechanisms may not yield efficient outcomes. Recent work has uncovered evidence that actual bidding by some market players leads to prices that distort the proper price signal. Generators that bid significantly above the incremental marginal cost of generation can inflate prices and send distorted signals as to the proper amount and location of new investment. Similarly, in balancing markets, firms that bid below the marginal cost of “DECing” in gaming a market suppress energy prices and possibly discourage investment. Evidence of both types of behavior has been found in several markets. This tele-seminar will discuss evidence that bidders distort the efficient price signal. | Steve Puller | 3/31/2008 | 322.0k | PDF |
| 08-05 | Designing CO2 Trading Markets for the Power Sector: Does It Matter Who Gets the Allowances and Who Must Comply?
PSERC Tele-Seminar slides, April 1, 2008.
Carbon allowance trading has been implemented in the European Union, and will start in several eastern states in June. Meanwhile, several western states and Canadian provinces are negotiating the formation of a trading region for the West, and it appears likely that a federal system will emerge in the next Congress, if not before. Because of the potentially large costs that would result, as well as the large economic rents, from implementation of these systems, there has been intense political discussion of who should be responsible for compliance and how allowances should be distributed. In this seminar, I’ll discuss whether the answers to these questions are important from the point of view of overall economic efficiency. | Benjamin F. Hobbs | 4/2/2008 | 455.0k | PDF |
| 08-07 | Demand Response via Real-Time Pricing to Increase Use of Operational Wind Energy Generators
PSERC Public Tele-Seminar Slides for May 6, 2008
One of the impediments to large-scale deployment of wind generation within power systems is its non-dispatchability, and variable and uncertain real-time energy output. Operating constraints on conventional generators (such as minimum generation points, forbidden zones, and ramping limits) as well as system constraints (such as power flow limits and ancillary service requirements) may force a system operator to curtail wind generation to ensure that the system can be operated securely. Furthermore, the pattern of wind availability and electricity demand may not allow wind generation to be fully utilized in all hours. Constraining output from operational wind energy generators raises costs and air emissions, and makes it more difficult to reach targets set by renewable portfolio standards.
In this seminar, I will discuss the use of real-time pricing (RTP)as a demand-response solution that could help operators make better use of wind resources. RTP can (1) help to smooth-out the diurnal load pattern to reduce the effects of binding unit operating constraints on wind utilization, (2) provide the incentive for demand to increase in response to the availability of wind generation with its zero variable energy cost, and (3) reduce transmission congestion by using locational prices to increase demand on the ‘export side’ of a transmission constraint. I will discuss a case study based on the ERCOT power system with different estimates of demand responsiveness to demonstrate the potential increase in the use of wind generation as a result of implementing RTP. | Ramteen Sioshansi | 5/9/2008 | 252.5k | PDF |
| 08-09 | PMU-Enabled Distributed State Estimation with the SuperCalibrator
PSERC Public Tele-Seminar Slides for June 17, 2008
PSERC researchers at Georgia Tech have been searching for improved state estimation and power grid visibility approaches that use advanced data acquisition hardware. This research has led to the creation of the “SuperCalibrator,” a new technology that enables distributed state estimation by using existing relay/PMU devices in substations. Recently, these researchers teamed up with Concurrent Technologies Corporation (CTC) through the U.S. Department of Energy’s Center for Grid Modernization to accelerate development of fully distributed state estimator technologies and their use in modern energy management systems. The concept was proved on two two-substation systems of the NYPA and ENTERGY systems in a 2006-07 project. This effort has been focused on implementing and demonstrating this technology in a full system (the U.S. Virgin Island WAPA system). This work is being performed by Professors A. P. Meliopoulos and George Cokkinides. The fully distributed three-phase state estimator will be described in this tele-seminar. | Sakis Meliopoulos | 6/17/2008 | 2.9M | PDF |
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