THE IMPACTS AND MITIGATION STRATEGIES OF REVERSE POWER FLOW IN DISTRIBUTION ELECTRICAL NETWORK WITH HIGH PENETRATION OF RENEWABLE ENERGY SYSTEMS

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dc.contributor.authorKhalefeh, Mai
dc.date.accessioned2025-03-05T10:32:04Z
dc.date.available2025-03-05T10:32:04Z
dc.date.issued2024-10-15
dc.description.abstractThe increasing penetration of renewable energy systems (RES), particularly distributed generation (DG) such as solar photovoltaic (PV), has transformed modern power distribution networks. While this technology offers environmental and economic benefits, it also introduces significant technical challenges. One of the most critical issues is reverse power flow (RPF), which occurs when the generation from distributed sources exceeds local demand, causing power to flow back toward the electrical distribution network. This thesis addresses the impacts of reverse power flow due to high penetration in the electrical distribution network; A detailed analysis is conducted to assess how RPF affects voltage profiles and transformer losses. Through ETAP simulated an electrical distribution with 33 buses , 14 step-down transformers with 10KV /0.38KV rating and 19 loads connected to the buses. The network simulation was done by adding a solar PV energy system and addressing the benefits, then increasing the number of solar PV arrays connected to buses to reach PV penetration at various levels of 20%,40%,60%, in PV penetration no existing to reverse power flow, the buses’ voltages rising to an acceptable levels and this effect improves the electrical network and reduces the transformers losses ,but if any solar PV arrays connected to a bus and generated power exceeds the demand load that connected to that bus a reverse power flows towards the distribution transformer causing losses and rising in voltage. The network was simulated by reducing the load demand to reach PV penetration levels of 109% , and190% ,the reverse power flow amounts was increased with the increase in PV penetration to high levels .and this case occurred when the solar PV system generated power in peak times while the load demand is light .high level of PV penetration produced many impacts as voltage rising issue and transformers losses issue .various mitigation strategies were proposed as BESS (battery energy storage system ), load shifting ,and zero export devices and smart inverters. Assessment was done for each mitigation strategy and choosing between these solutions depends on the specific grid conditions, regulatory framework, and available financial resources.
dc.identifier.urihttps://hdl.handle.net/20.500.11888/19964
dc.language.isoen
dc.publisherAn-Najah National University
dc.supervisorOmar, Moen
dc.titleTHE IMPACTS AND MITIGATION STRATEGIES OF REVERSE POWER FLOW IN DISTRIBUTION ELECTRICAL NETWORK WITH HIGH PENETRATION OF RENEWABLE ENERGY SYSTEMS
dc.title.alternativeتأثيرات وطرق معالجة ظاهرة الانسياب المعاكس للقدرة الفعالة في الشبكات الكهربائية التي تتضمن مستوى عالي من مصادر الطاقة المتجددة
dc.typeThesis
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