: Public <<BUC>> BusinessUseCase
Created: 19/09/2018 10:36:52
Modified: 19/09/2018 10:36:52
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The use case defines information exchange between TSO and DSO in order to improve programming of their networks operation. DSO can forecast the load and distributed generation disaggregated by technology type (wind, PV, hydro, CHP, etc.) and location, which may be done with up to 15 minutes sampling period. Once exchanged with the TSO, in a properly aggregated manner, this information will allow having a more efficient and secure operation of the bulk power system.<br/><br/>There are cases in which the distribution grid is operated with connections between two or more TSO substations, creating network loops through distribution level. In this sense, a common observability area for both system operators needs to be defined, including visibility of the TSO over possible distribution network loops. If TSO considers in operational planning stage the foreseen network topology of the DSO, the security assessment (N-1) of the power system can be significantly improved with associated benefits to both TSO and DSO.<br/><br/>On other side, the DSO also needs to accurately estimate power flows on its own grid, which may be affected by different configurations of transmission network topology. Therefore, the foreseen connection state of specific transmission lines, connecting more than one TSO substations and with significant impact on distribution network power flows, can be exchanged with the DSO for operation planning purposes.<br/><br/>In the above-mentioned scenarios, the exchange of operational planning data, such as foreseen connection state, scheduled maintenance actions and electrical characteristics of specific lines must be communicated between TSO and DSO.<br/><br/>In this use case, operational planning data exchange is done 72 hours ahead, being refreshed every 24 hours, using state of the art, standardized technological means.<br/>
Element Source Role Target Role
«Business» Market Operator
Business «use»
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«Business» Distribution System Operator
Business «use»
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«Business» Transmission System Operator
Business «use»
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Tag Value
modsarusUC::identifier 7
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Object Type Connection Direction Notes
«PreCondition» The TSO and DSO agree on the network elements that belong to the common observability area. PreCondition Dependency To  
«Assumption» The TSO is also the System Manager of the corresponding control area. Assumption Dependency To  
«Objective» Application of state of the art, standardized technological means to perform operational planning data exchange between TSO and DSO. Objective Dependency To  
«ClassificationInformation» Classification Information ClassificationInformation Dependency To  
«PreCondition» The DSO forecasts 72 hours ahead connection state and schedule maintenance actions of distribution assets (examples: lines, transformers, capacitor banks, etc.). PreCondition Dependency To  
«Versions» Versions1 Versions Dependency To  
«Objective» Anticipate and solve distribution grid constraints. Objective Dependency To  
«BusinessCase» Operational Planning activities BusinessCase Dependency From  
«Objective» Enhance the scheduled/forecasted information exchanged in TSO-DSO interface in order to improve programming of TSO operation. Objective Dependency To  
«Objective» Anticipate and solve transmission grid constraints. Objective Dependency To  
«Assumption» The DSO is able to predict distribution grid constraints allowing efficient real-time network operations. Assumption Dependency To  
«Assumption» Load and generation forecasts, including forecasts of DERs, required for the operational planning are always available. Assumption Dependency To  
«Objective» Improve quality of service. Objective Dependency To  
«SUC» Disaggregated production and generation forecast for operational planning purposes SystemUseCase Dependency To  
«Assumption» The wholesale market is performed in a day-ahead basis Assumption Dependency To  
«References» References1 References Dependency To  
«BusinessCase» Work programmes (TSO, DSO, SGUs). BusinessCase Dependency From  
«Narrative» Narrative Narrative Dependency To  
«PreCondition» The TSO forecasts 72 hours ahead connection state and schedule maintenance actions of transmission lines, within observability area. PreCondition Dependency To  
«Objective» Reduce DER curtailment. Objective Dependency To  
«SUC» Contribution of DSO to voltage regulation SystemUseCase Dependency To  
«PreCondition» The DSO forecasts 72 hours ahead the load and distributed generation disaggregated by technology type (wind, PV, hydro, CHP, etc.) and location at a node level within observability area. The forecast periods are according to DSO practices. PreCondition Dependency To  
«Objective» Enhance the scheduled/forecasted information exchanged in TSO-DSO interface in order to improve programming of DSO operation. Objective Dependency To