2010 Webinars
Documents
| Name | Author | Date | Size | Type |
|---|---|---|---|---|
|
Impact of Wind Variability on Power System Small-Signal Reachability
Author
Alejandro D. Dom?uez-Garc? Univ. of Illinois at Urbana-Champaign
Date
5/9/2010
Size
37.24 KB
Type
Document
|
Alejandro D. Dom?uez-Garc? Univ. of Illinois at Urbana-Champaign | 5/9/2010 | 37.24 KB | Document |
|
New Angles for Monitoring Power System Area Stress with Synchrophasors
Description
This webinar is on an idea for a new application using synchrophasor data to monitor power system stress in a selected area. We define the voltage angle across an area of a power system to measure the area stress. The voltage angle across the area is a weighted combination of the voltage angles at all the buses along the border of an area. The area angle can be divided into two parts;
one part is internal stress caused by power injections inside the area, and the other part is external stress caused by power flows from other areas. The area angles can be monitored using synchrophasor measurements at the border buses. The internal stress angle changes when lines inside the area outage or when there is redispatch of power within the area. The internal stress angle does not change when lines outage outside the area or power is redispatched outside the area. This makes the internal stress angle useful for detecting and monitoring changes inside the area. The analysis uses a DC load flow model of the power system and exploits the recently discovered cutset angle.
Author
Ian Dobson, Univ. of Wisconsin-Madison
Date
8/10/2010
Size
27.77 KB
Type
Document
|
Ian Dobson, Univ. of Wisconsin-Madison | 8/10/2010 | 27.77 KB | Document |
|
Implementation Issues for Hierarchical State Estimators
Description
There is renewed interest in situation awareness for an entire interconnection because of the cascading blackout of August 2003 which affected an area that is not covered by any one control center. In fact, a recent DOE/FERC report on the monitoring of the entire North American grid recommends use of interconnection-wide monitoring centers. As cited in the report, such centers will be made possible when enough phasor measurement units for time-synchronizing the data exist across an interconnection. Operationally, the local monitoring and state estimation results can be moved up through the reliability coordinators to an interconnection-wide monitoring center. If the use of interconnection-wide monitoring centers becomes feasible, the financial and reliability benefits will be quite substantial. Another real benefit will be that a real-time model of the whole interconnection could also be made available for local decision-making. Author
Anjan Bose, Washington State Univ.
Date
9/1/2010
Size
33.08 KB
Type
Document
|
Anjan Bose, Washington State Univ. | 9/1/2010 | 33.08 KB | Document |
|
Grid Effects of Cloud-Induced Variation in Solar Photovoltaic Generation
Description
Photovoltaic (PV) generation output varies with incident solar radiation, which is affected by cloud cover. Maximum expected changes in PV generation due to moving clouds and storms were assessed. The effects of such changes on two utilities were evaluated using power flow and production costing software. Results are presented in this webinar.
Author
Ward Jewell, Wichita State University
Date
9/1/2010
Size
26.13 KB
Type
Document
|
Ward Jewell, Wichita State University | 9/1/2010 | 26.13 KB | Document |
|
Comparative Characterization of Parallel Distribution Sensors Under Field Conditions
Description
Conventional current and potential transformers (CTs and PTs) are the de facto standard for sensing currents and voltages, but the cost of sensor acquisition and installation is often seen as a barrier to the widespread deployment of new technologies. Sensors based on alternative technologies offer the promise of lower installed costs, but their sensing characteristics are generally undocumented and poorly understood.
Under this PSERC project, researchers consulted with advisor utilities to determine commonly used models of alternative sensors. After reaching consensus on sensor selection, researchers installed a three-phase set of each selected model alongside a three-phase set of conventional CTs and PTs on an in-service, 12.47-kV distribution feeder. Over an extended period of time, the outputs of these devices were monitored with high-fidelity waveform-recording devices. These devices recorded multiple steady-state and transient electrical signals, including several overcurrent faults. The presenter will give the results of the testing. Author
Carl Benner, Texas A&M
Date
9/27/2010
Size
28.76 KB
Type
Document
|
Carl Benner, Texas A&M | 9/27/2010 | 28.76 KB | Document |
|
Actions Being Taken within the Midwest ISO to Address Climate Changes
Description
As a Regional Transmission Operator, the Midwest ISO is an information resource.
In the high stakes climate change debate, the Midwest ISO’
s goal is to inform, prepare, and position its stakeholders to have a voice in the policy debate and to efficiently adapt to potential regulatory changes. The climate change regulations currently being discussed in Congress will have significant impacts on the Midwest ISO and its stakeholders. This presentation describes activity being taken by the Midwest ISO to understand the implications of climate change initiatives on Midwest ISO stakeholders. Various compliance strategies will need to be employed in combination to meet the policy objectives of both state and federal regulators while achieving the lowest cost.
Author
John Lawhorn, Midwest ISO
Date
10/7/2010
Size
434.87 KB
Type
Document
|
John Lawhorn, Midwest ISO | 10/7/2010 | 434.87 KB | Document |
|
Substation of the Future: A Feasibility Study
Description
PSERC Webinar on Nov. 9
Digital technologies for data acquisition, automation, and control have been continuously evolving for the last three decades. We propose a revolutionary utilization and integration of existing technologies for the design of the substation of the future. The proposed approach is based on the concept of equipping each component: potential transformer (VT), current transformer (CT), breaker, etc. with a universal GPS-synchronized meter (UGPSSM) that will transmit data to a set of redundant substation computers. The data are processed locally to provide a reliable real time model of the substation with minimal time latencies (less than 1 msec). The real time model is utilized for critical (protection, alarming, etc.) and non-critical functions (power quality analysis, etc.) of the substation. The real time model of the substation is also transmitted to the control center where the entire system model is synthesized. The real time model (substation and system) is also available to all shareholders via the enterprise communication network. The report describes the overall scheme and provides performance metrics for this approach. It illustrates that it is possible to design a system as described in this report with existing technology or slightly modified present day technologies. Author
Sakis Meliopoulos, Georgia Institute of Technology
Date
10/12/2010
Size
457.43 KB
Type
Document
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Sakis Meliopoulos, Georgia Institute of Technology | 10/12/2010 | 457.43 KB | Document |
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Climate Change Adaptation Program at BC Hydro Transmission
Description
PSERC Webinar on Dec. 7
This presentation summarizes BC Hydro’ s Transmission Climate Change Adaptation Program which proactively addresses greenhouse gas emission risk, reduction and financial management. Major climate change challenges, issues, and mitigation measures will be addressed. Details are presented on how climate change conditions are projected. The presentation includes information on how BC Hydro transmission mitigates and adapts to climate changes, specifically to temperature, precipitation, wind, icing, and rising sea level. Specific examples will be presented on how BC Hydro Transmission uses advanced materials, robotics, and meteorological in its program. Author
Janos Toth, BC Hydro Transmission
Date
10/29/2010
Size
27.64 KB
Type
Document
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Janos Toth, BC Hydro Transmission | 10/29/2010 | 27.64 KB | Document |
|
Using PMU Data to Increase Situational Awareness
Description
PSERC Webinar on Dec. 14
With the large-scale deployment of PMUs in the U.S. and worldwide, a recurring theme has been the question of how to best extract useful “ information” or “ knowledge” from the very voluminous data that PMUs provide. Over the last two years PSERC project S-36, “ Using PMU Data to Increase Situational Awareness,” has focused on this issue. This webinar presents results from this project, focusing in five areas. First, the webinar considers how much information could be gleaned from the PMU data with an approach that makes minimal use of other a priori information about the system status and model parameters. Second, the presentation will discuss an algorithm on how PMU data can be used to enhance existing power flow algorithms to improve situational awareness. Third, the visualization of PMU-derived information associated with power system electromechanical oscillations will be considered. Fourth, the webinar will consider how PMU data can improve situational awareness by improving the load models used for power system analysis platforms. Last, the application of PMU data to improve reactive power monitoring and control is considered. Author
Tom Overbye, Univ. of Illinois at Urbana/Champaign
Date
10/29/2010
Size
27.58 KB
Type
Document
|
Tom Overbye, Univ. of Illinois at Urbana/Champaign | 10/29/2010 | 27.58 KB | Document |