ADAPTIVE PROTECTION OF DISTRIBUTION SYSTEMS WITH DISTRIBUTED ENERGY RESOURCES CONSIDERING CONSUMER AND GENERATION PROFILES

• Main Author: Agus Dwi Wahyudi, Candra
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/39650
• Institution: Institut Teknologi Bandung

Distributed Energy Resources (DER) penetration conducts a significant impact on the distribution protection system. Distribution feeder current during normal loading and shortcircuit conditions are affected by DER load flow operating state, DER short-circuits contribution, consumers load, and feeder topology at switching points. Therefore, protection devices along distribution feeder as well as feeder upstream observe different current during short-circuit and load flow condition based on DER's contribution. The more integration of DER's leads to more challenge for protection engineers who are responsible for maintaining their protection system sensitive, selective, with fast response, and optimum reliability. This thesis uses the IEEE 34 Node Test Feeder and extends it by addition of photovoltaic, wind and energy storage DERs. Consumer loads and DER's generation were extended from static values to typical load and generation profiles. Protection device settings were calculated selectively in the absence of DERs. Using the method of Protection Security Assessment (PSA), automatically evaluate the correct operation of protection devices in case of different fault scenarios. Three-phase and single-phase metallic faults are applied to validate protection system security. Accordingly, DERs generation profiles and consumer profiles were considered. Daily, Weekly and seasonal patterns were examined. DER contribution and influence on protection device selectivity were reassessed by the PSA method. Accordingly, adaptive rules were developed to fix identified miss-coordinations by modifying protection settings or feeder automation logic. This thesis focuses on identifying proper adaptive rules and assumes that proposed settings and logics will be implemented through an Advanced Distribution Management System (ADMS) and protection maintenance staff.