Notes:
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Several situations can be considered:<br/><br/>1. TSO informs to the DSO some power limits at the substations <br/>In this case, two options are possible :<br/>1 a) TSO informs to the DSO some power limits at the substations for its work planning: The TSO can ask in operational planning to the DSO to limit the power consumption/injection of the substations that will be concerned by its work planning. To do so, the DSO may need to make a network configuration which can involve operation in loop for a short period.<br/>1 b) TSO informs to the DSO some power limits at the substations for the security system<br/>In case of incident in the TSO network, the TSO can ask in real time to the DSO to limit the power consumption/injection at some substations. To do this, the DSO can proceed to a network configuration which may involve operation in loop for a short period.<br/><br/>2. DSO proceed to a network configuration <br/>2 a) DSO proceed to a network configuration for its work planning needs<br/>As for the TSO work planning needs, the DSO may need a network configuration which can involve operation in loop for a short period. The DSO can evaluate the work planning in operational and real time.<br/>2 b) DSO proceed to a network configuration for the system security<br/>If an incident occur in the DSO network, the DSO can proceed (at real time) to a network configuration to guarantee system security.<br/><br/><br/>For all these situations and to validate the MV network reconfiguration, the DSO needs to have some observability of the TSO network (both at operational or real time).<br/><br/>The process to validate the network MV reconfiguration is presented below:<br/>1. Collection of input data<br/>The DSO needs some input data (at operational or real time) of both the TSO and the DSO network to launch an algorithm to obtain the estimated power flows.<br/>2. Launch of the algorithm to obtain an estimation of the current transit<br/>If all the input data is available, the DSO can perform the calculation of the current transit <br/>3. Make a decision<br/>If the current transit estimated not lead to constraints in distribution network, the load transfer can be made. Otherwise, the DSO should postpone the load transfer or look for another solution<br/>
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