: Public <<Narrative>> Narrative
Created: 05/03/2018 10:17:52
Modified: 19/03/2018 17:49:28
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  completeDescription
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Notes: Experience from power systems with high levels of Renewable Energy Sources (RES) shows that peaks in feed-in generation can often cause congestion in distribution or transmission systems. These congestions can be originated by the RES directly connected to the system of the operator facing the congestion or by RES connected in other SO <font color="#0f0f0f">[1]</font>. It is important to mention that the scenarios of procurement/activation can be used at same time, depending of the contract with each flexibility. It is also possible to include other kind of services for specific technologies. As example, it is possible to agree a minimum value of <i>State of Charge</i> (SOC) with energy storage systems to assure a future availability of this type of DER.<br/><br/>• The description of the process for Day-Ahead procurement by the TSO follows:<br/>1. The TSO forecasts the possibility to have congestions in transmission network that can be solved by SGUs connected in distribution network. The TSO:<br/>a) asks the DSO for the procurement of the flexibilities<br/>b) asks the flexibility operator for the procurement of the flexibilities<br/>c) schedule directly the flexibilities <br/>2. Flexibilities procurement to solve the congestions constraints<br/>3. The Settlement responsible should be informed of the flexibilities procurement  <br/>• The description of the process for Day-Ahead procurement by the DSO follows:<br/>1. The DSO forecasts the possibility to have congestions in distribution network that can be solved by SGUs connected in distribution network. The DSO:<br/>a) asks the aggregators for the procurement of the flexibilities<br/>b) schedule directly the flexibilities <br/>2. Flexibilities procurement to solve the congestions constraints<br/>3. The Settlement responsible should be informed of the flexibilities procurement<br/><br/>In real-time, the flexibilities are activated based in the procurement did in operational planning. <br/>
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Notes: Coordination between TSO and DSO for optimal congestion management.<br/><br/>This use case describes the optimal management of the apparent power when TSO and/or DSO are facing congestion problems. The relevant System Operator (SO) should manage the available resources (active and reactive power flexibilities) in order to solve the congestion constraints both in transmission and distribution systems.<br/><br/>In particular, the present BUC is focus in the situations where a SO can support other SO activating some flexibilities connected in its network. The situations where the SO can solve the congestions without asking other SO are not concerned in the present BUC.<br/>
Object Type Connection Direction Notes
«BUC» Optimize active power management by the System Operators for congestion management purposes BusinessUseCase Dependency From