Active Distribution Grids Providing Voltage Support: The Swiss Case

Active Low Voltage Grids

Providing a protection method to support distributed generation against transient voltage instability

The analysis of transient stability in electric power systems and the penetration coefficient of scattered productions play important roles in the regulation of protective equipment, so these parameters should be considered two main factors in the electrical protection of power networks. Overcurrent relays are used as one of the simplest and most effective solutions for power system protection....

Planning and Operation of the Active and Reactive sources Constrained to Voltage Security in the Reconfigurable Smart Distribution Network

One of the most important objectives of smart distribution networks (SDNs) is to achieve a secure and reliable network. This can be realized by optimal operation in the presence of active power sources such as the distributed generations (DGs), reactive power sources such as switched capacitor bank (SCB), active loads such as the demand response program (DRP), and various network management str...

Dynamic Grid Support in Low Voltage Grids – Fault Ride-Through and Reactive Power/Voltage Support during Grid Disturbances

Faults in medium and high voltage grids lead to voltage sags in the low voltage level. Due to the voltage dip, distributed generators disconnect from the low voltage grid. Depending on the amount of disconnected generation, system stability could be compromised. With a dynamic grid support, distributed generators remain connected to the grid during faults, also called fault ride-through. Moreov...

Coordinated local reactive power control in smart distribution grids for voltage regulation using sensitivity method to maximize active power JES

Distributed generation (DG) integrated into Smart grid is the future of distribution systems. The expected impact is wide in terms of control, management, supply and use. In particular, in order to integrate DG based on renewable sources in distribution networks without compromising the integrity of the grid, it needs to develop proper control techniques to allow power delivery to customers in ...