: Public <<Narrative>> Narrative
Created: 05/08/2018 01:06:56
Modified: 05/08/2018 01:06:56
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Notes: The System Use Case defines the information exchange for the market offering. Two different scenarios are proposed. The scenario 1 intends to describe the specific field test that will be implemented in Slovenia and the scenario 2 the demonstrator that will be tested in France in the TDX-ASSIST project. Both scenarios may not be applicable in other geographies or in networks with other types of constraints.<br/><br/><b><u>Scenario 1: Offering balancing service at the balancing market - Slovenian Scenario</u></b><br/>This scenario describes the information exchange between the market participants and the market operator during the balancing services procurement. <br/><br/>In the present scenario the role of market operator is responsibility of the TSO. The DSO have two different roles in the present scenario: 1. can have the role of market participant; 2. can have the role of pre-operational planning validating the merit-order list of the market. <br/><br/>Exclusions: The offering process of other market participants is not described in the present scenario; the validation process provided by the DSO is not described.<br/><br/>TSO collects offers made by pre-qualified market participants in its control area using market platform, in order to create merit order list (MOL). The offering is done in two stages. In the first step, market participants send offers for the balancing capacity. If an offer is selected, the market participant signs the contract to provide balancing capacity in the limited time period (e.g. 1 year). During contracted period, the market participant is obliged to send offers for the balancing energy (mandatory offers). TSO creates MOL using mandatory offers with the lowest prices. All offers are further validated in the sense that activation of the balancing capacity is in line with overall safe grid operation. When balancing asset is connected to the distribution grid, conformity validation is done by DSO and information is exchanged with TSO prior MOL creation.<br/>This scenario uses an assumption that DSO is eligible to make an offer for the balancing capacity utilizing demand response mechanism, such as conservation voltage reduction (CVR). DSO must be pre-qualified to make an offer for the balancing capacity.  Offered balancing power (consumption reduction) is determined in refer to the baseline forecast, which is a prediction of energy consumption that does not take into account the likely effects of conservation actions.  Prior balancing service provision, DSO should ensure that such action will not have negative impact on the voltage profile and loads in the distribution grid. The offered consumption reduction (power) is determined using analysis and calculations with restrictions that demand response actions will not cause voltage violations of more than 5%. <br/><br/><b><u>Scenario 2:  Offering flexibilities at the national market - French Scenario</u></b><br/>The French scenario intends to describe the scenario that will be tested in the French demonstrator. In the proposed architecture, each market actor should do the offers mentioning the location of the offer. If the offers were provided by SGU connected to distribution system, the location should be provided at least at HV/MV level. The scenario can be applied for different services requiring a technical validation of the DSO.<br/><br/>This scenario is composed by three different scenario. <br/>1. The first one describes a generic process to send an offer to the market and to acknowledge the results of the market. The internal process to define the offer is not described in the present scenario.<br/>2. The second scenario describes the process lo lead with the market offers. The market clearing mechanism is not described in the scenario.<br/>3. Finally, the third scenario describes the process to validate the offers of the market participants with the SGU connected to distribution system.<br/><br/><br/><br/>
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Notes: - Demonstrate activities and information exchange during market offering procedure in which TSO (Transmission System Operator) procures different services like the balancing capacity. The offering process includes a technical validation of the DSO for the offers did by market participants with SGU (Significant Grid User) connected in the distribution system.<br/>- Validation of TSO/DSO coordination mechanism to distributed flexibility resources procurement avoiding double or counter activation of the same flexibility resource by TSO and DSO (Distribution System Operator). <br/>- Prevent the negative impact of blind offers activation in the networks <br/>- Definition of the data that should exchange between the TSO, the DSO and the market operator.<br/>
Object Type Connection Direction Notes
«SUC» Market Offering SystemUseCase Dependency From