Amidaddin Shahriari
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Amidaddin Shahriari has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Alireza Pourdaryaei
Department of Power and Control, School of Electrical and Computer Engineering, Shiraz University, Shiraz 7194684334, Iran
1 shared publication - Kimmo Kauhaniemi
School of Technology and Innovations University of Vaasa Vaasa Finland
1 shared publication - Mazaher Karimi
School of Technology and Innovations, University of Vaasa, Vaasa, Finland
1 shared publication - Mohammad Mohammadi
Department of Power and Control Engineering, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran
1 shared publication - Mohammad Reza Aghamohammadi
Department of Electrical Engineering, Shahid Abbaspour School of Engineering, Shahid Beheshti University, Tehran 1983969411, Iran
1 shared publication
Latest Publications
- Open Access
A New Approach for Long-Term Stability Estimation Based on Voltage Profile Assessment for a Power Grid
Load flow solutions refer to the steady-state stability of power systems and have a crucial role in the design and planning of slow-changing elements; e.g., in online tab changing actions, automatic generation control, over-excitation limiters and the power recovery characteristics of a load. Therefore, the purpose of this work was to show the connectivity between load flow analysis and long-term voltage stability using a generator model by introducing a novel voltage stability assessment based on the multi-machine dynamic model along with the load flow study for a power grid. The Euclidean distance (ED) was used to introduce a new voltage stability index based on the voltage phasor profile for real-time monitoring purposes. The effects of reactive power compensation, in addition to load-generation patterns and network topology changes in the system behavior, could be seen clearly on the voltage profiles of the buses. Thus, the increased values for the EDs of the buses’ voltage amplitudes—from 0 to around 1.5 (p.u.)—implied that the system was approaching the voltage collapse point, corresponding to the Jacobian matrix singularity of the load flow equation. Moreover, the weakest load bus with respect to any system change was also identified. Indeed, the criticality of any network interruption was in direct proportion to this voltage stability index. The proposed method was validated using the IEEE 118-bus test system.
Open AccessA New Approach for Long-Term Stability Estimation Based on Voltage Profile Assessment for a Power Grid
Load flow solutions refer to the steady-state stability of power systems and have a crucial role in the design and planning of slow-changing elements; e.g., in online tab changing actions, automatic generation control, over-excitation limiters and the power recovery characteristics of a load. Therefore, the purpose of this work was to show the connectivity between load flow analysis and long-term voltage stability using a generator model by introducing a novel voltage stability assessment based on the multi-machine dynamic model along with the load flow study for a power grid. The Euclidean distance (ED) was used to introduce a new voltage stability index based on the voltage phasor profile for real-time monitoring purposes. The effects of reactive power compensation, in addition to load-generation patterns and network topology changes in the system behavior, could be seen clearly on the voltage profiles of the buses. Thus, the increased values for the EDs of the buses’ voltage amplitudes—from 0 to around 1.5 (p.u.)—implied that the system was approaching the voltage collapse point, corresponding to the Jacobian matrix singularity of the load flow equation. Moreover, the weakest load bus with respect to any system change was also identified. Indeed, the criticality of any network interruption was in direct proportion to this voltage stability index. The proposed method was validated using the IEEE 118-bus test system.