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High-power DC electric vehicle supply equipments (EVSE) have a significant impact on voltage stability in low-voltage networks. To ensure the guaranteed voltage characteristics, utility grid operator permit the installation of DC-EVSE only in proximity of local substations. A simplified grid access strategy for DCEVSE is achievable by reactive power support of the EVSE rectifier system. Since decentralized regenerative energy (DRE) already provide voltage band control using reactive power support in lowvoltage networks, the interaction of DRE and EVSE reactive power compensation scheme is investigated. To enhance power converters operation, a fast reacting voltage-droop control concept for DRE and EVSE is proposed for rapid voltage change mitigation. The applicability of a voltage-droop control is verified using probabilistic simulations.

DC-Electric Vehicle Supply Equipment Operation Strategies for Enhanced Utility Grid Voltage Stability