scholarly journals Multi-time Scale Optimal Power Flow Strategy for Medium-voltage DC Power Grid Considering Different Operation Modes

2020 ◽  
Vol 8 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Jianqiang Liu ◽  
Xiaoguang Huang ◽  
Li Zuyi
Keyword(s):  
Time Scale ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Power Grid ◽  
Medium Voltage ◽  
Dc Power ◽  
Optimal Power ◽  
Operation Modes ◽  
Medium Voltage Dc

On data integrity attacks against optimal power flow in power grid systems

Kahn at Penn ◽  
2017 ◽  
Author(s):  
Qingyu Yang ◽  
Yuanke Liu ◽  
Wei Yu ◽  
Dou An ◽  
Xinyu Yang ◽  
...  
Keyword(s):  
Power Flow ◽  
Optimal Power Flow ◽  
Power Grid ◽  
Data Integrity ◽  
Grid Systems ◽  
Optimal Power

scholarly journals LP based solution for Security Constrained Optimal Power Flow including Power Routers

2020 ◽  
Vol 15 ◽  
Keyword(s):  
Power System ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Electrical Power ◽  
Flow Analysis ◽  
Time Frame ◽  
Electrical Power System ◽  
Piecewise Linearization ◽  
Dc Power ◽  
Optimal Power

Power Routers offers many benefits to the power system, it helps in improving the existing transmission asset utilization. Security Constrained Optimal Power Flow (SCOPF) is becoming more important in the electrical power system especially in the present deregulated environment. This paper focuses on completely linearizing the complex non-linear SCOPF problem. The objective function is linearized using Piecewise linearization technique and the constraints are framed using linear sensitivity factors. A formal extension is made to the traditional SCOPF by including power router control in the post contingency time frame. DC power flow analysis is used to calculate the real power flow in the lines.Thus, in this paper, further minimization of cost is achieved by using Power Router control and it is compared with the conventional SCOPF.

The OPF Formulation and Solution for Energy Router Incorporated AC&DC Network

2019 ◽  
Vol 12 (5) ◽  
pp. 453-463
Author(s):  
Qing Duan ◽  
Jing Guo ◽  
Wanxing Sheng ◽  
Guanglin Sha ◽  
Ke-Jun Li ◽  
...  
Keyword(s):  
Power System ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Vital Role ◽  
Energy Internet ◽  
Dc Power ◽  
Optimal Power ◽  
Optimal Target ◽  
Power Electronic Technology ◽  
Better Than

Background: The energy router based on power electronic technology is the core equipment of energy internet. Energy router can control the voltage of the port and regulate the power injected into the network flexibly. It is of great significance to study how the capability of the energy router can be used to improve characteristics of the power system. Methods: Based on the analysis of energy router, we construct a unified AC-DC power flow model for energy router considering its different control modes. Then, we establish an optimal power flow formulation for the energy router incorporated AC-DC network and propose the multi-objective function to optimize the comprehensive performance of the network. Several cases are observed and analyzed on a modified IEEE-57 system. Results: The result verifies that the optimal power flow formulation can optimize the control values of ports of the energy router and improve the operating state of the power system. The optimal target presented in this paper can improve the characteristics of the grid better than a single optimal target. Conclusion: Energy router will play a vital role in the energy internet based on the power system. The characters of the power system can be improved and the operating costs can be reduced by utilizing the functionality of energy router in regulating power flow.

Transient Stability Constrained Optimal Power Flow Based on Multi-time Scale Power System Models

2017 ◽  
Vol 28 (3) ◽  
pp. 418-427
Author(s):  
Kamile Fuchs ◽  
Roman Kuiava ◽  
Thelma S. P. Fernandes ◽  
Pedro A. B. Block ◽  
Raphael Augusto de Souza Benedito
Keyword(s):  
Power System ◽  
Time Scale ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Transient Stability ◽  
System Models ◽  
Optimal Power
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