Abstract
Demand-Side Generating Assets (DSGAs) relate to existing small diesel Gensets serving the critical loads of infrastructures in unexpected electrical network interruptions. This paper investigates the exploitation of DSGA as potential suppliers of ancillary services (AS), especially in the case of isolated or weak interconnected island power systems such as in Crete. In this regard, their impact on substations’ loading reductions and associated copper losses is presented, using a substation as a case study with a typical touristic load in Crete. DSGA’s impact on such a significant part of reliability enhancement in distribution systems is evaluated, examining different scenarios of DSGA installed capacity. Subsequently, extensive research is carried out regarding the cost analysis for their access to the electrical grid providing AS, in combination with their operating cost analysis. The calculations on fuel consumption cost show that DSGA are comparable with the most expensive gas turbines of the Cretan power system. Finally, considering the capital cost for their required configurations and their fuel consumption cost, a proposal for their remuneration prices is made. The prices that arise are lower than the actual remuneration prices of other similar services such as Genset rentals for the case of the Cretan power system.
Highlights
Apart from bids in generation and demand, an integral part of energy markets, the maintenance of frequency, and voltage in a grid within pre-determined limits of grid codes require the provision of ancillary services (AS) to support the transmission of electricity from generation to consumption with safety and security [1,2]
This new technique refers to Demand-Side Generating Assets (DSGAs), which represent the Gensets installed in consumer infrastructures to serve the load in electrical network interruptions
Their impact on the level of the substations’ reliability enhancement was evaluated, examining the improvement that can be achieved in terms of its overloading and copper losses
Summary
Apart from bids in generation and demand, an integral part of energy markets, the maintenance of frequency, and voltage in a grid within pre-determined limits of grid codes require the provision of ancillary services (AS) to support the transmission of electricity from generation to consumption with safety and security [1,2]. The results these mparable to that of the gas turbines, but is proven to be lower than the most expensive gas turbine the existence of DSGA in the voltage level of MV and LV can considerably reduce, even the Cretan power system Their capital and operating costs are taken into account to make a to eliminate the overloading and the copper losses of substation transformers (HV/MV), enhancing itial proposaltheir of reliability. S provision incompared distribution systems, by and examining theirgas contribution the reduction of overloadin with that of the oldest most expensive turbines of theto Cretan power system The results of these calculations show that the fuel consumptionthe cost cost-analysis of DSGAs are nd copper losses on substation level. This purpose, a critical substation of the island power system of Crete is used as a case study
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