TransienTs in electrical systems

... page intentionally left blank Electrical power systems are highly nonlinear and dynamic in nature: circuit breakers are closing and opening, faults are being cleared, generation is varying in ... electromechanical transients in rotating machines occur. Table 1-3 shows the division into four groups, and also the phe- nomena giving rise to transients in a certain group is indi...

Ngày tải lên: 02/01/2014, 10:44

... involving a single (nodal) point in the network, i.e. shunt faults, and those involving two points in one or more phases in a given plant component, i.e. series faults. Simultaneous faults involve ... reliable and economic operation. The main computer-based studies used in today's power systems are outlined in this introductory chapter. 30 Electrical power systems ± an ov...

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Ngày tải lên: 12/12/2013, 08:18

... decision makers in evaluating water policies and developing sustainable water resource management plans. WEAP operates following the basic principles of water balance accounting and links water supplies ... stored in reservoir zone j involves an increase in the target function given by Eq. 4, which, since k j are negative by default, in fact mean a decrease in the target functi...

Ngày tải lên: 05/09/2013, 14:58

... was developed in response to the increasing use of mobile computers in order to enable computers to maintain Internet connection during their movement from one Internet access point to another. ... encrypted messages being exchanged. Such information could be useful to the attacker as it can reveal useful information in guessing the nature of the information being exchanged [2,3]. In...

Ngày tải lên: 29/09/2013, 21:20

... learning and two learning ows. At individual level, the intuiting process takes place. At group level, the interpreting and integrating processes are developed. Finally, the institutionalizing ... to sites targeted at China and Chinese-speaking audiences, including user and consumer behavior patterns, categorizing China using Hofstede’s cultural dimensions, examining traditional and hi...

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Ngày tải lên: 12/12/2013, 08:27

... considered independently.Inthis sense it canbeconsideredasanonlinearcounterpart of the well-known separation principleu sed in linear systems. In ter estingly ,t his res ult canb ea pplied to systemsthatare ... ), is ob viously ex po nen tiallyd eca ying. Holdingthis simpleviewpoint, it is natural to wonder whetherasimilar reasoningwould hold to inferstabilityand convergence properties o...

Ngày tải lên: 01/01/2014, 18:39

Ngày tải lên: 03/01/2014, 19:39

... determining I and Q values for each symbol (“slicing”) 5. decoding and de-interleaving 6. expansion to original bit stream 7. digital-to-analog conversion, if required In more and more systems, ... 2. Trends in the Industry The polar diagram shows several symbols at a time. That is, it shows the instantaneous value of the carrier at any point on the continuous line between and includin...

Ngày tải lên: 26/01/2014, 04:20