S. Jarjees Ul Hassan | Sungkyunkwan University (original) (raw)

Uploads

Papers by S. Jarjees Ul Hassan

Electric Power Systems Research

IEEE Access

Renewable energy is being increasingly integrated into distribution systems worldwide in response... more Renewable energy is being increasingly integrated into distribution systems worldwide in response to technological, economic, and environmental challenges. The assessment of hosting capacity allows us to determine the maximum installation capacity of distributed energy resources (DERs) in a distribution system within its operational limits to obtain more benefits. In this study, a new multistage algorithm is developed based on an analytical approach and optimal power flow (OPF) for the assessment of DERs' hosting capacity (DERHC) with single and multiple multi-type DERs. In the first stage, the optimal locations of DERs are determined analytically, and the second stage involves the calculation of optimal DERs sizes for the assessment of the maximum locational and total DERHC. This method provides mathematical and global optimum certainty considering the constraints to maintain the reliability and protection of the system. Moreover, the proposed method is tested using a standard IEEE 33-bus distribution system, and different scenarios are created based on the number and type of DERs to achieve the best-case results of DERHC. The obtained results are compared with those of the conventional OPF iterative method that are encouraging and validate the accuracy and robustness of the proposed methodology. 14 15 INDEX TERMS Analytical optimal power flow method, hosting capacity assessment, multi-type distributed generation, optimal power flow. I. INTRODUCTION 16 Owing to significant increase in the demand for elec-17 tric power over the last few decades, distributed energy 18 resources (DERs) have received attention as potential solu-19 tions to the energy crisis. Therefore, electrical distribution 20 systems are progressively featuring DERs to satisfy electri-21 cal power requirements. Nevertheless, excessive integration 22 of DERs into a distribution system negatively affects the 23 performance of the system and may lead to various prob-24 lems, such as overvoltage or undervoltage, thermal overload, 25 power quality deterioration, excessive line losses, and pro-26 tection failure [1]. Therefore, the maximum capacity of the 27 157 which the distribution system still performs according to the 158 standards and constraints within the surface of the inbound 159 region is called the DERHC [28]. As shown in this figure the 160 capacity of DER integration is represented by two curves.

The integration of distributed generators has changed the paradigm of modern power transmission s... more The integration of distributed generators has changed the paradigm of modern power transmission systems. To cope with energy demands, electrical networks emphasize the efficient utilization of power transmission. Thus, high-voltage DC (HVDC) and hybrid (AC/DC) transmission systems are also getting attention owing to their high efficiency in addition to the widely adopted high-voltage AC (HVAC) systems. Most faults in the bulk of transmission lines are temporary or intermittent. Auto-reclosing schemes can be used to prevent these faults. However, conventional auto-reclosing schemes based on constant dead time cannot recognize the fault nature within the assigned duration. Consequently, the accuracy of power grids can be compromised. Therefore, adaptive auto-reclosing schemes are convenient for overcoming the issues caused by the rapid restoration of faulty power lines. This can enhance system reliability and avoid power failures and blackouts. This study is based on a systematic, det...

The transactions of The Korean Institute of Electrical Engineers

Machines

Power loss and voltage instability are major problems in distribution systems. However, these pro... more Power loss and voltage instability are major problems in distribution systems. However, these problems are typically mitigated by efficient network reconfiguration, including the integration of distributed generation (DG) units in the distribution network. In this regard, the optimal placement and sizing of DGs are crucial. Otherwise, the network performance will be degraded. This study is conducted to optimally locate and sizing of DGs into a radial distribution network before and after reconfiguration. A multi-objective particle swarm optimization algorithm is utilized to determine the optimal placement and sizing of the DGs before and after reconfiguration of the radial network. An optimal network configuration with DG coordination in an active distribution network overcomes power losses, uplifts voltage profiles, and improves the system stability, reliability, and efficiency. For considering the actual power system scenarios, a penalty factor is also considered, this penalty fac...

Electric Power Systems Research

IEEE Access

Renewable energy is being increasingly integrated into distribution systems worldwide in response... more Renewable energy is being increasingly integrated into distribution systems worldwide in response to technological, economic, and environmental challenges. The assessment of hosting capacity allows us to determine the maximum installation capacity of distributed energy resources (DERs) in a distribution system within its operational limits to obtain more benefits. In this study, a new multistage algorithm is developed based on an analytical approach and optimal power flow (OPF) for the assessment of DERs' hosting capacity (DERHC) with single and multiple multi-type DERs. In the first stage, the optimal locations of DERs are determined analytically, and the second stage involves the calculation of optimal DERs sizes for the assessment of the maximum locational and total DERHC. This method provides mathematical and global optimum certainty considering the constraints to maintain the reliability and protection of the system. Moreover, the proposed method is tested using a standard IEEE 33-bus distribution system, and different scenarios are created based on the number and type of DERs to achieve the best-case results of DERHC. The obtained results are compared with those of the conventional OPF iterative method that are encouraging and validate the accuracy and robustness of the proposed methodology. 14 15 INDEX TERMS Analytical optimal power flow method, hosting capacity assessment, multi-type distributed generation, optimal power flow. I. INTRODUCTION 16 Owing to significant increase in the demand for elec-17 tric power over the last few decades, distributed energy 18 resources (DERs) have received attention as potential solu-19 tions to the energy crisis. Therefore, electrical distribution 20 systems are progressively featuring DERs to satisfy electri-21 cal power requirements. Nevertheless, excessive integration 22 of DERs into a distribution system negatively affects the 23 performance of the system and may lead to various prob-24 lems, such as overvoltage or undervoltage, thermal overload, 25 power quality deterioration, excessive line losses, and pro-26 tection failure [1]. Therefore, the maximum capacity of the 27 157 which the distribution system still performs according to the 158 standards and constraints within the surface of the inbound 159 region is called the DERHC [28]. As shown in this figure the 160 capacity of DER integration is represented by two curves.

The integration of distributed generators has changed the paradigm of modern power transmission s... more The integration of distributed generators has changed the paradigm of modern power transmission systems. To cope with energy demands, electrical networks emphasize the efficient utilization of power transmission. Thus, high-voltage DC (HVDC) and hybrid (AC/DC) transmission systems are also getting attention owing to their high efficiency in addition to the widely adopted high-voltage AC (HVAC) systems. Most faults in the bulk of transmission lines are temporary or intermittent. Auto-reclosing schemes can be used to prevent these faults. However, conventional auto-reclosing schemes based on constant dead time cannot recognize the fault nature within the assigned duration. Consequently, the accuracy of power grids can be compromised. Therefore, adaptive auto-reclosing schemes are convenient for overcoming the issues caused by the rapid restoration of faulty power lines. This can enhance system reliability and avoid power failures and blackouts. This study is based on a systematic, det...

The transactions of The Korean Institute of Electrical Engineers

Machines

Power loss and voltage instability are major problems in distribution systems. However, these pro... more Power loss and voltage instability are major problems in distribution systems. However, these problems are typically mitigated by efficient network reconfiguration, including the integration of distributed generation (DG) units in the distribution network. In this regard, the optimal placement and sizing of DGs are crucial. Otherwise, the network performance will be degraded. This study is conducted to optimally locate and sizing of DGs into a radial distribution network before and after reconfiguration. A multi-objective particle swarm optimization algorithm is utilized to determine the optimal placement and sizing of the DGs before and after reconfiguration of the radial network. An optimal network configuration with DG coordination in an active distribution network overcomes power losses, uplifts voltage profiles, and improves the system stability, reliability, and efficiency. For considering the actual power system scenarios, a penalty factor is also considered, this penalty fac...