By HDK / Published on Tue, 2009-09-15 14:55
In cooperation with PSERC, we are pleased to offer access to this archived webinar. To watch the recording (56 minutes), click the link in the further reading block.
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By HDK / Published on Wed, 2009-08-05 15:17
The gas infrastructure might be used to balance the increasing variations in electricity generation and demand e.g. due to large scale integration of renewable energy sources like wind and solar-PV.
What will be the share of various systems to balance the electricity system in 2020? We welcome your comments and votes on this question.
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By Stephen Browning / Published on Sun, 2008-05-18 16:40
Both the system and distribution operators need to forecast and monitor the transmission and distribution flows in terms of security and stability. They therefore need a reliable base for predicting demand and generation, both totals for matching and by location for security analysis. The system operator also needs adequate resources allocated to response and reserve duty. Both operators will also have plant allocated for emergency action, (e.g. intertripping), in parts of the system where this is required post fault to avoid breaching circuit thermal limits or local system voltage/stability limits. Introducing such generation control schemes has permitted extra plant, especially renewables, to be installed in parts of the system where they would not be accommodated under conventional (passive continuous operation) security criteria.
Active Distributed Energy Resources can thus be employed by the operators for matching, ancillary services and active local security management.
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By Hans De Keulenaer / Published on Wed, 2007-11-28 18:46
The 10th weekly session at the Leonardo ENERGY 3D Forum takes place this Friday November 30th, from 14h00 - 15h00 Europe Daylight Time (Brussels), where you can meet with the Leonardo ENERGY team and other users of the Leonardo initiative inside the 3D forum (check here to convert Brussels time to other time zones).
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By Stephen Browning / Published on Wed, 2007-11-28 15:21
The demand is continually changing, thus generation has to be scheduled and dispatched to track it, plus provide adequate response and spare, which can react in the appropriate timescales to cater for innacuracies in demand prediction or unexpected generation output. Here are some examples of different weekday demand patterns in Great Britain (GB).
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By Stephen Browning / Published on Wed, 2007-11-28 12:48
Each power system is always in balance; generation = demand. On an AC system, this rule is maintanied in real time by the frequency, whose deviation from nominal (50 or 60 Hz) represents the difference between 'required demand' and 'delivered demand'.
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By Isabelle Heriakian / Published on Thu, 2007-07-12 00:00
This paper describes the effect of series connected diodes and their balancing networks m the clamp circuit in IGCT converters. It is shown, that the balancing of the clamp diodes has other requirements than the balancing of the series connected freewheeling diodes in the switch cell. The dynamic and static balancing of the clamp diodes is analyzed in detail.
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