Microgrid Switching Control for Safe Prosumer Isolation

The system segments the microgrid into multiple circuit groups, each with independent main and branch switching devices. This allows individual circuit groups to be isolated for maintenance while others continue operating, and enables controlled disconnection of specific prosumers or source devices without affecting the entire grid. The segmentation provides granular control over power flow and safety isolation.

The switching devices include hot standby functions that allow pre-positioning of switches in a ready-to-act state. Before maintenance or fault conditions occur, the system can pre-configure the switching states, so that when isolation is needed, the switching devices can immediately execute the disconnection without delay. This preliminary configuration reduces the time prosumers remain isolated and simplifies reconnection procedures.

The system introduces main switching devices as intermediary components between the electrified switchgear and maintenance personnel. These main switching devices can be remotely operated and provide an additional layer of isolation, allowing maintenance personnel to work on lower-level electrified switchgear without direct exposure to high voltage. The intermediary switching devices enable safe disconnection and isolation of specific circuit groups during maintenance operations.

The control system is segmented into hierarchical levels with main control modules managing circuit groups and branch control modules managing individual prosumers and source devices. This segmentation allows rapid disconnection to be achieved through localized branch switching operations without requiring complex centralized control for every disconnection event. The modular structure simplifies the control logic while enabling fast response to faults.