scholarly journals Influence of electric vehicle access mode on the static voltage stability margin and accommodated capacity of the distribution network

2019 ◽  
Vol 2019 (16) ◽  
pp. 2658-2662 ◽  
Author(s):  
Xiangqian Tong ◽  
Qiao Ma ◽  
Kaiyu Tang ◽  
Huakun Liu ◽  
Cheng Li
Keyword(s):  
Electric Vehicle ◽  
Voltage Stability ◽  
Distribution Network ◽  
Stability Margin ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Access Mode

scholarly journals Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Natakorn Thasnas ◽  
Apirat Siritaratiwat
Keyword(s):  
Optimal Power Flow ◽  
Voltage Stability ◽  
Stability Margin ◽  
Stability Index ◽  
System Stability ◽  
Line Voltage ◽  
Voltage Stability Index ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Stability Indices

Nowadays, the changes of economic, environment, and regulations are forcing the electric utilities to operate systems at maximum capacity. Therefore, the operation and control of power system to improve the system stability has been receiving a great deal of attention. This paper presents an approach for enhancing the static voltage stability margin and reducing the power losses of the system with voltage security-constrained optimal power flow (VSC-OPF) that is based on static line voltage stability indices. The control approaches incorporate the voltage stability criteria into the conventional OPF. The minimization of the summation of fast voltage stability index (FVSI), line stability index (Lmn), and line voltage stability index (LVSI) is used as the objective functions. The performance and effectiveness of the proposed control approaches are evaluated on the standard IEEE 30-bus, 57-bus, and 118-bus test systems under normal and contingency conditions. The comparison analysis is carried out with different cases including minimization of generation cost. The proposed control approaches indicate the promising results and offer efficient countermeasures against the voltage instability of the system.

scholarly journals ACTIVE POWER LOSS REDUCTION AND IMPROVEMENT OF STATIC VOLTAGE STABILITY MARGIN INDEX BY WATERWAY ALGORITHM

SINERGI ◽  
2018 ◽  
Vol 22 (3) ◽  
pp. 155
Author(s):  
Kanagasabai Lenin
Keyword(s):  
Power Loss ◽  
Voltage Stability ◽  
Stability Margin ◽  
Natural World ◽  
Active Power ◽  
Superior Performance ◽  
Loss Reduction ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Power Loss Reduction

In this paper, the Waterway Algorithm (WA) is used for Active Power Loss Reduction and improvement of Static Voltage Stability Margin Index. The design of the Waterway Algorithm (WA) is imitated from nature and the whole waterway process which involves the flow of streams and rivers into the sea in the natural world. The proposed Waterway Algorithm (WA) algorithm has been tested on standard IEEE 30 bus test system and simulation results show clearly about the superior performance of the proposed algorithm in reducing the real power loss and upgrading the Static Voltage Stability Margin Index.

Static Voltage Stability Margin Enhancement Using Shunt Capacitor, SVC and STATCOM

2015 ◽  
Vol 781 ◽  
pp. 288-291 ◽  
Author(s):  
Natakorn Thasnas ◽  
Apirat Siritaratiwat
Keyword(s):  
Power Flow ◽  
Voltage Stability ◽  
Stability Margin ◽  
Test System ◽  
Stability Study ◽  
Flow Process ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Shunt Compensation ◽  
Shunt Capacitor

This paper presents the study of static voltage stability margin enhancement using shunt capacitor, SVC and STATCOM. AC and DC representations of shunt compensation devices are used in the continuation power flow process in static voltage stability study. Various performance measures including PV curves, voltage profiles, and power losses are compared. Placement and sizing techniques of shunt compensation devices are proposed for loading margin enhancement. The study has been carried out on the IEEE 14 bus test system.

Static Voltage Stability Margin Calculation for the Microgrid Based on Immune Algorithm

2013 ◽  
Vol 756-759 ◽  
pp. 3099-3102
Author(s):  
Ming Guang Zhang ◽  
Zhong Zhang
Keyword(s):  
Voltage Stability ◽  
Optimal Solution ◽  
Stability Margin ◽  
Stability Index ◽  
Immune Algorithm ◽  
Global Optimal Solution ◽  
Main Method ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Global Optimal

To the questions of approaching degree between operating point and collapse point, and operating mechanism in the instability, the main method to analyze power system is often the calculation of static voltage stability index. In this paper, a method of microgrid static voltage stability margin based on immune algorithm is proposed. Compared with traditional method, the method not only can search for the global optimal solution effectively, but also deal with discrete variables in the system; meanwhile, complex node of the microgrid is considered entirely .The simulation results confirm that the method is more reasonable and effective for microgrid static voltage stability margin.

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