Suppressing DC Current Injection in Transformerless Grid-Connected Inverter Using a Customized Current Sensor

Coordinated allocation of soft open point and converter‐based energy storage systems in PV penetrated active distribution networks

“…Renewable energies can significantly address the conflict between the growing load demand and environmental protection, ensuring sustainable energy supply [1]. However, its increasing integration brings challenges to Active Distribution Networks (ADNs), such as bi-directional power flow, voltage rise and power fluctuation [2,3].…”

“…As to the optimization of operation issues based on SOP-based flexible resources in ADNs, reference [12] presents a two-stage optimization model for ADNs considering SOP with ES to enhance the economics and security of distribution network operation; reference [13] adopted the maximum DG hosting capacity index to evaluate the benefits of conventional SOP, multi-terminal SOP and SOP with ES, proving that SOP-based flexible resources are capable of increasing the DG penetration of ADNs; reference [14] established an optimization model of the operating efficiency based on four-port SOP with ES; reference [15] proposed the supply restoration strategy in ADNs, replacing ES systems in SOP-based ES with embedded DC microgrids; reference [16] studied the optimization of day-ahead distribution network operation considering the cycle life of the SOP-based ES model. However, the existing SOP-based ES studies have three aspects of research gaps: (1) The previous studies did not consider the effects of SOP-based ES joint model on ADNs planning problem. (2) Most of the prior studies adopted a fixed battery service life of ES systems.…”