A New Estimation Method of Transient Voltage Stability Limit Clearing Time

2014 ◽  
Vol 971-973 ◽  
pp. 1051-1054
Author(s):  
Da Peng Xing ◽  
Jia Li ◽  
Da Qiang Qiu
Keyword(s):  
Voltage Stability ◽  
Estimation Method ◽  
Stability Limit ◽  
Clc Number ◽  
Document Code ◽  
Voltage Instability ◽  
Time Index ◽  
Transient Voltage Stability ◽  
Clearing Time ◽  
Transient Voltage

Critical clearing time index is one of the indices to assess transient voltage stability. At present it is mainly calculated based on the instantaneous value after transient voltage instability or the steady state valueafer fault clearing time. So a new method to estimate the critical clearing time is presented which is correspongding to the induction motor minimum slipvalue in the fault. It can forecasttransient voltage instability,and has higher precision comparing whithquik criterion and analytical method. The simulation results of IEEE 30-bus system verify the effectiveness of the stated method. .CLC number: TM 73 Document code: A Article ID: 000-3673(2013)00-0000-00

The Review of Grid-Connected PV System’s Transient Voltage Stability

2012 ◽  
Vol 182-183 ◽  
pp. 681-684
Author(s):  
You Jie Ma ◽  
Cheng Liao ◽  
Xue Song Zhou
Keyword(s):  
Stability Criterion ◽  
Distribution System ◽  
Voltage Stability ◽  
Reactive Power ◽  
Photovoltaic System ◽  
System Load ◽  
Voltage Instability ◽  
Simulation Calculation ◽  
Transient Voltage Stability ◽  
Transient Voltage

Grid photovoltaic system’s inverter, grid device and other power electronics device consume a large quantity of reactive power, the distribution system load mostly is perceptual, it must also consume reactive power. This will make big interference interconnection of photovoltaic system after the transient voltage stability serious test. Therefore, the study grid photovoltaic system transient voltage stability is of great significance. This paper introduces the transient voltage stability of research contents, such as transient voltage stability of factors, stability criterion, the simulation calculation, and puts forward prevention transient voltage instability accident measures, and analyzes system transient voltage stability mechanism.

Enhance Power System Transient Voltage Stability by Difference Coefficient of Generator Excitation System Optimization

2014 ◽  
Vol 1008-1009 ◽  
pp. 409-416
Author(s):  
Wen Sun ◽  
Yin Sheng Su ◽  
Jun Feng Zhang ◽  
Xiao Ming Li
Keyword(s):  
Power System ◽  
Voltage Stability ◽  
Reactive Power ◽  
System Optimization ◽  
Optimization Strategy ◽  
Excitation System ◽  
Voltage Instability ◽  
Transient Voltage Stability ◽  
Calculation Results ◽  
Transient Voltage

Lack of dynamic reactive power compensation result in power system transient voltage instability. To improve the transient voltage stability, an optimization strategy for setting the excitation system difference coefficient of the generator is presented in this paper. The concept of the excitation system difference coefficient is introduced. Then the impacts of difference coefficients of generator excitation system on generator stability are analyzed and adjustment range is proposed. The calculation results of Guangdong province system show that the transient voltage stability level is enhanced effectively after optimizing the excitation system difference coefficient.

scholarly journals Analysis of PSVR Transient Voltage Stability Based on RTDS

2019 ◽  
Vol 223 ◽  
pp. 012046
Author(s):  
Siyuan Guo ◽  
Junying Song ◽  
Shaolang Ma ◽  
Li Li ◽  
Yongsheng Zhao
Keyword(s):  
Voltage Stability ◽  
Transient Voltage Stability ◽  
Transient Voltage
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