Transient Stability Improvement by UPFC Using Estimated Sensitivities Based on Thevenin's Theorem and DC Power Flow Method

2012 ◽  
Vol 2 (3) ◽  
pp. 257-263
Author(s):  
Kenichi Kawabe ◽  
Akihiko Yokoyama
Keyword(s):  
Power Flow ◽  
Transient Stability ◽  
Flow Method ◽  
Dc Power ◽  
Power Flow Method

Decoupled AC/DC Power Flow Strategy for Multiterminal HVDC Systems

2018 ◽  
Vol 19 (1) ◽  
Author(s):  
Yixiang Gao ◽  
Shuhui Li ◽  
Weizhen Dong ◽  
Bing Lu
Keyword(s):  
Power Flow ◽  
Control Mode ◽  
Power Flow Calculation ◽  
Flow Calculation ◽  
Power System Control ◽  
Flow Method ◽  
Hvdc System ◽  
Dc Power ◽  
Bus System ◽  
Power Flow Method

AbstractThis paper proposes a decoupled AC/DC power flow approach for multi-terminal HVDC systems. The proposed method simplifies the power flow computation of multi-terminal HVDC systems while accurately reflecting the operation and control characteristics of VSC (voltage source converter) stations in a HVDC network. In the DC network, the power flow calculation is conducted based on a slack DC bus VSC station and power commends issued to other VSC stations from the power system control center. Then, in the AC power flow calculation, VSC stations are treated as special AC generators that can generate and absorb power from the AC grid in active and reactive power or active power and bus voltage control mode. For validation purpose, the conventional unified power flow method for multi-terminal HVDC systems is built. The paper compares the proposed method with the unified power flow method for an 8-bus multi-terminal HVDC system based on MATPOWER. Then, more case studies for different VSC control modes are conducted and evaluated for the 8-bus system. Afterwards, the proposed method is applied to the power flow study of a more practical and complicated multi-terminal HVDC system based on the IEEE 118-bus system.

A new power flow method for mixed AC-DC power systems

2017 ◽  
Author(s):  
Miguel Jimenez Carrizosa ◽  
Eduardo Jimenez ◽  
Amir Arzande
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Flow Method ◽  
Dc Power ◽  
Dc Power Systems ◽  
Power Flow Method

Introducing a Novel DC Power Flow Method With Reactive Power Considerations

2015 ◽  
Vol 30 (6) ◽  
pp. 3012-3023 ◽  
Author(s):  
Seyed Masoud Fatemi ◽  
Sajjad Abedi ◽  
G. B. Gharehpetian ◽  
Seyed Hossein Hosseinian ◽  
Mehrdad Abedi
Keyword(s):  
Power Flow ◽  
Reactive Power ◽  
Flow Method ◽  
Dc Power ◽  
Power Flow Method

Improved DC power flow method based on empirical knowledge of the system

2010 ◽  
Author(s):  
Shuai Lu ◽  
Ning Zhou ◽  
Nirupama Prakash Kumar ◽  
Nader Samaan ◽  
Bhujanga B. Chakrabarti
Keyword(s):  
Power Flow ◽  
Empirical Knowledge ◽  
Flow Method ◽  
Dc Power ◽  
Power Flow Method

Augmented DC power flow method with real-time measurements

2016 ◽  
Author(s):  
Shamina Hossain-McKenzie ◽  
Sriharsha Etigowni ◽  
Katherine Davis ◽  
Saman Zonouz
Keyword(s):  
Real Time ◽  
Power Flow ◽  
Flow Method ◽  
Dc Power ◽  
Power Flow Method

scholarly journals Analysis of Tire Acoustic Cavity Resonance Energy Transmission Characteristics in Wheels Based on Power Flow Method

2021 ◽  
Vol 11 (9) ◽  
pp. 3979
Author(s):  
Wei Zhao ◽  
Yuting Liu ◽  
Xiandong Liu ◽  
Yingchun Shan ◽  
Xiaojun Hu
Keyword(s):  
Power Flow ◽  
Resonance Energy ◽  
Cavity Resonance ◽  
Propagation Path ◽  
Material Structure ◽  
Transmission Characteristics ◽  
Energy Transmission ◽  
Flow Method ◽  
Acoustic Cavity ◽  
Power Flow Method

As a kind of low-frequency vehicle interior noise, tire acoustic cavity resonance noise plays an important role, since the other noise (e.g., engine noise, wind noise and friction noise) has been largely suppressed. For the suspension system, wheels stand first in the propagation path of this energy. Therefore, it is of great significance to study the influence of wheel design on the transmission characteristics of this vibration energy. However, currently the related research has not received enough attention. In this paper, two sizes of aluminum alloy wheel finite element models are constructed, and their modal characteristics are analyzed and verified by experimental tests simultaneously. A mathematically fitting sound pressure load model arising from the tire acoustic cavity resonance acting on the rim is first put forward. Then, the power flow method is applied to investigate the resonance energy distribution and transmission characteristics in the wheels. The structure intensity distribution and energy transmission efficiency can be described and analyzed clearly. Furthermore, the effects of material structure damping and the wheel spoke number on the energy transmission are also discussed.

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