scholarly journals Effect of Probabilistic Pattern on System Voltage Stability in Decentralized Hybrid Power System

2015 ◽  
Vol 03 (04) ◽  
pp. 195-204 ◽  
Author(s):  
Nitin Kumar Saxena ◽  
Ashwani Kumar
Keyword(s):  
Power System ◽  
Voltage Stability ◽  
Hybrid Power System ◽  
Hybrid Power

Geometric Parameterization Technique Based Continuation Power Flow and its Applications in AC/DC Hybrid Power System

2013 ◽  
Vol 732-733 ◽  
pp. 857-863
Author(s):  
Chao Jie Guan ◽  
Jin Quan Zhao ◽  
Jian Hua Yin ◽  
Kun Men ◽  
Chao Hong
Keyword(s):  
Power System ◽  
Power Flow ◽  
Voltage Stability ◽  
Stability Limit ◽  
Hybrid Power System ◽  
Continuation Power Flow ◽  
Dc System ◽  
Hybrid Power ◽  
Dc Power ◽  
Predictor Corrector

A new continuation power flow method based on local geometric parameterization technique is proposed for voltage stability analysis of AC/DC hybrid power system. By means of the alternating iteration method as the AC/DC power flow algorithm, the proposed method takes the coupling relationship between AC and DC systems into account to modify Jacobian matrix of AC system. Constraints of variables in DC system are also considered, as well as the adjustment of converter transformers tap position and the conversion of converters control modes. Based on the predictor-corrector method, this paper adopts the geometric corrector, and changes the direction of convergence effectively. According to different operation modes of AC/DC system, accurate voltage stability limit and the entire PV curve can be acquired. Simulation results of IEEE test systems are used to show the validity of the proposed algorithm.

The frequency-voltage stability control for isolated wind-diesel hybrid power system

2021 ◽  
Vol 192 ◽  
pp. 106984
Author(s):  
Yang Mi ◽  
Yiwen Xu ◽  
Zhongjie Lang ◽  
Xingwu Yang ◽  
Xiaolin Ge ◽  
...  
Keyword(s):  
Power System ◽  
Voltage Stability ◽  
Stability Control ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Voltage Stability Control

The Static Voltage Stability Limit Calculation of AC/DC Hybrid Power System Based on Improved Continuation Power Flow Algorithm

2013 ◽  
Vol 347-350 ◽  
pp. 1450-1454
Author(s):  
Hong Jun Fu ◽  
Jian Hua Sun ◽  
Jing Gang Wang ◽  
Yang Yu Hu
Keyword(s):  
Power System ◽  
Power Flow ◽  
Voltage Stability ◽  
Stability Limit ◽  
Hybrid Power System ◽  
Continuation Power Flow ◽  
Static Voltage Stability ◽  
Hybrid Power ◽  
Flow Algorithm ◽  
Step Control

With the HVDC system interconnected to power grid, the voltage stability problem of power grid has become increasingly prominent. This paper establishes the mathematical model of AC/DC hybrid power system and proposed an improved Continuation Power Flow (CPF) algorithm to calculate the static voltage stability limit of AC/DC hybrid system, the characteristics of this algorithm are as following: PQ decoupled power flow algorithm is used; Lagrange quadric interpolation is used in the process of predictor and step control; local parameter method is used in the correction. The iterations of AC/DC calculation alternate to solve power flow equations and select the step control near the critical power limit points to ensure the convergence of power flow solution. In order to verify the correctness of the proposed algorithm, this paper compares the calculation results by the improved algorithm and Matpower on the IEEE 14 bus-system. This paper calculates the static voltage stability limit of AC/DC hybrid power system under different DC control patterns of modified IEEE 14 bus-system and analyzes the impacts of different DC control pattern to the system voltage stability.

Damping of Frequency Fluctuations of Hybrid Power System by Variable Deloaded Operation of PMSG Based Offshore Wind Farm

2019 ◽  
Vol 139 (4) ◽  
pp. 259-268
Author(s):  
Effat Jahan ◽  
Md. Rifat Hazari ◽  
Mohammad Abdul Mannan ◽  
Atsushi Umemura ◽  
Rion Takahashi ◽  
...  
Keyword(s):  
Power System ◽  
Wind Farm ◽  
Offshore Wind ◽  
Offshore Wind Farm ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Frequency Fluctuations
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