Activation of DSO balancing service : Activity diagram
Created: |
06/07/2018 14:13:00 |
Modified: |
12/09/2018 15:22:46 |
Project: |
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Author: |
nermi |
Version: |
1 |
Advanced: |
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ID: |
{E074D54D-FD5E-4a97-8182-20F3CBFAE1F1} |
The merit order list (MOL) model ensures cost-effective activation of bids at the balancing market. TSO shouldn’t activate balancing energy bids before the corresponding balancing energy gate closure time, except in emergency situations.<br/>The activation signal is sent either by TSO or market platform to the BSP, in accordance with MOL. Activation signal is carried by SCADA and data related to the activation process is exchanged in real-time. <br/>The first step is to validate activation request, in the sense is balancing resource is available. For this purpose, BSP periodically sends status (measurement) of regulation units in its portfolio, also outside full activation time. <br/>BSP activates the product and sends activation confirmation. This confirmation contains identification of bid, type of the product (balancing or dispatching), status (activated/not activated), acknowledgement (yes/no) and DWH store (historical measurement data store, yes/no). At the conformation reception, TSO sends setpoint control data (required capacity in MW, with 0.001 MW resolution). Mechanism of acknowledgments is used to enable reliable communication. These setpoint control signal are updated every two seconds. DWH store is optional. BSP sends product activity measurements.<br/>Designated DSO receives information about product activation and sends alarm to TSO (or market platform) in a case of congestion or voltage violation in the distribution grid. In such circumstances, TSO changes setpoint, informs BSP to activate another reserve from control portfolio or, as a final step, terminates activation.<br/>In a particular case, when DSO provides a service (product) at the balancing market utilizing demand response, DSO monitors voltage violation in its grid and takes control actions to maintain voltage in allowed limits during activation.<br/>