October 24th, 2014

Strategy and Value - Epilogue

I spent many years with the CEGB then National Grid, working in the fields of generation, system operation and the development of models for Generation Economics - Commitment, Scheduling, Dispatch and Ancillary services with the associated representation of Demand, Fuel, Market, Interconnection flows and Transmission security constraints.

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The Smart Customer - Salient Points

1) The change from fixed preset single or two rate daily tariff to ToU has a major impact. Try going in stages via more preset rates (time of day, day of week, season etc).  

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The Smart Enterprise, its Objective and Forecasting

Each AC Power System is always in perfect balance (Kirchoff's law).  The wires have no storage and the product moves through them at the speed of light from every electrical alternator and other generation mechanism through every socket to every demand.

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DER Participation in Operator Timescales

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 wil

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DER Participation in Market Timescales

When it comes to incorporating Distributed Energy Resource (DER) activity, the supplier will need to construct half hour energy blocks with prices, representing the aggregated ‘offers’ from or contracts with his customers to vary premises export and import.  These can then be compared with the sale and purchase half hourly energy blocks and prices being tendered in the Market by other parties. 

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DER Market and Matching

There are a number of commercial and technical mechanisms by which the variable elements of distributed energy resources (DER) can participate in the generation to demand matching process. 

 The timescales for participation are: 

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October 21st

Impact of economical cable conductor sizing

The energy losses of cables can be reduced by increasing the cross section of the copper conductor. A study by Egemin Consulting demonstrates that minimizing the Total Cost of Ownership (TCO) of a cable results in a cross section that is larger than that which current technical standards prescribe.

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Data standards, Metering and Settlement

We now need to explore the requirements for the content of different types of messages used between the customer premises and the industry. 

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Data Logistics

As we have already stated, data traffic for distributed resource management will require the use of high speed aggregation and dissemination mechanisms between the customer and the commercial and operator sections of the industry.

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Premises Power Profile and DER control

The Power profiles for different DER sectors, with and without generation, need to be considered carefully.

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