1、Rewarding the Uncoordinated Balancing Cooperation of Grid-Connected Wind Farms;2、Synchronized Measurement Based Algorithm for Analysis of Faults on Transmission Lines;3、Keeping the lights on and the information flowing
报告人:
François Bouffard, University of Manchester, IEEE Senior Member;Prof. Vladimir Terzija，University of Manchester，Humboldt Fellow, IEEE Senior Member, IET Member;Prof. Daniel Kirschen，University of Manchester，IEEE IET and Sigma X Fellow
Dr. François Bouffard, University of Manchester, IEEE Senior Member Prof. Vladimir Terzija，University of Manchester， Humboldt Fellow, IEEE Senior Member, IET Member Prof. Daniel Kirschen，University of Manchester， IEEE IET and Sigma X Fellow
报告时间:
2009-04-03 14:00
报告地点:
清华大学西主楼3区102
主办单位:
清华大学电机系
简介:
1、Rewarding the Uncoordinated Balancing Cooperation of Grid-Connected Wind Farms Power imbalance cost allocations schemes ignore that wind farms are usually dispersed over wide geographical areas and, thus, are exposed to wide spectra of operating conditions. This wide variety of conditions acts to reduce the network-wide power imbalance, albeit in an uncoordinated fashion. Recognizing that this uncoordinated cooperation is beneficial to the economic efficiency and security of a power system, we develop an imbalance cost allocation method effectively rewarding this cooperation. 2、Synchronized Measurement Based Algorithm for Analysis of Faults on Transmission Lines A broad spectrum of advanced technology solutions and novel protection and control techniques will deliver new modes of integrated power system protection and control. Supported by the Global Positioning System, the Synchronized Measurement Technology (SMT) is one of those key technologies. While the SMT is already commercially available, the development of its applications is still in its infancy. The focuses of this seminar are to discuss the challenges related to the development of such applications, the need for them in terms of the structure of future networks, the deployment of architectures for multi-purpose applications given different grid topologies, generation mixes and diverse operational challenges. A new numerical algorithm for the analysis of faults on overhead transmission lines will be particularly presented. It is based on synchronized sampling at two line ports and an accurate fault model including the arcing phenomena and tower footing resistance at the fault point. The core of the algorithm is an efficient non-recursive parameter estimation method. A dynamic arc model is included in the fault model to represent the arc’s interaction with the external network. The algorithm accurately estimates the arc voltage amplitude, tower footing resistance, and the fault location, simultaneously. As such, it is probably the most general problem solution developed up to date. The algorithm is derived in the time domain, and is based on the synchronized acquisition of currents and voltages at both line terminals. In the seminar the next generation of fault analyzers will be addressed, as well. Since early 90-th the research team at Manchester has been developing advanced solutions for fault location, and distance and directional protection, based on new macroscopic models of the fault arc. 3、Keeping the lights on and the information flowing Supplying electric power requires a large and very visible electrical infrastructure made of transmission lines, substations and generating plants. Nowadays however, these components cannot operate without the assistance of a much more concealed information infrastructure of communication links, instrumentation and control centers. Questions have begun to be raised about the negative impact that this increasing reliance on the information infrastructure might have on the resilience of the power system. Reports on major incidents have mentioned malfunctions or inadequacies in the control and communication systems as contributing factors to the degradation of the situation which ultimately led to blackouts. It is therefore important and urgent to understand the mechanisms through which failures in the information infrastructure can endanger the security of the power system. Once these mechanisms are understood, we must quantify their potential impact. Finally, on the basis of this quantification we must then develop techniques to maintain or enhance the overall robustness of the system. The framework that is traditionally used to assess the security of power systems is not suitable for these tasks because it does not consider explicitly the information infrastructure. The main purpose of this presentation is thus to propose a new framework that clarifies the interactions between the primary "electrical" and the secondary "information" infrastructures in terms of security. Based on this framework, we will then outline a set of research issues and challenges that deserve the attention of the power system community.
