Analysis of subsynchronous oscillation characteristics of hybrid-based wind farm connected with fixed series compensation system

2021 ◽  
Author(s):  
Junxi Wang ◽  
Qi Jia ◽  
Gangui Yan ◽  
Kan Liu ◽  
Wenchao Zhai
Keyword(s):  
Wind Farm ◽  
Compensation System ◽  
Series Compensation ◽  
Subsynchronous Oscillation ◽  
Fixed Series Compensation ◽  
Oscillation Characteristics

Analysis and Countermeasure for the GAP Abnormal Phenomenon of 500kV Fixed Series Compensation System Caused by Fiber Attenuation

2013 ◽  
Vol 773 ◽  
pp. 47-50
Author(s):  
Zhong Jie Wang ◽  
Yong Rui Dong ◽  
Xin Du
Keyword(s):  
Compensation System ◽  
System Operation ◽  
Series Compensation ◽  
Fiber Communication ◽  
Abnormal Phenomenon ◽  
Compensation Gap ◽  
Fixed Series Compensation ◽  
And Control

In this paper, the abnormal phenomenon of fixed series compensation GAP is discussed. The main reason, too large attenuation of the fiber communication between the GAP trigger equipment and control protection screen input plate is analyzed. The improved measurement to the fixed series compensation system operation and design is proposed.

Overview of Subsynchronous Oscillation in Grid-connected Wind Farm

2020 ◽  
Vol 13 (7) ◽  
pp. 969-979
Author(s):  
Xu Pei-Zhen ◽  
Lu Yong-Geng ◽  
Cao Xi-Min
Keyword(s):  
Power Systems ◽  
Wind Turbine ◽  
Large Scale ◽  
Wind Farm ◽  
Wind Farms ◽  
Induction Generator ◽  
Future Research ◽  
Stable Operation ◽  
Subsynchronous Oscillation ◽  
Different Types

Background: Over the past few years, the subsynchronous oscillation (SSO) caused by the grid-connected wind farm had a bad influence on the stable operation of the system and has now become a bottleneck factor restricting the efficient utilization of wind power. How to mitigate and suppress the phenomenon of SSO of wind farms has become the focus of power system research. Methods: This paper first analyzes the SSO of different types of wind turbines, including squirrelcage induction generator based wind turbine (SCIG-WT), permanent magnet synchronous generator- based wind turbine (PMSG-WT), and doubly-fed induction generator based wind turbine (DFIG-WT). Then, the mechanisms of different types of SSO are proposed with the aim to better understand SSO in large-scale wind integrated power systems, and the main analytical methods suitable for studying the SSO of wind farms are summarized. Results: On the basis of results, using additional damping control suppression methods to solve SSO caused by the flexible power transmission devices and the wind turbine converter is recommended. Conclusion: The current development direction of the SSO of large-scale wind farm grid-connected systems is summarized and the current challenges and recommendations for future research and development are discussed.

Research on SSO Caused by HVDC Based on Eigenvalue Analysis

2011 ◽  
Vol 383-390 ◽  
pp. 4792-4798
Author(s):  
Dan Zhang ◽  
Xiang Ning Xiao ◽  
Lin Yang ◽  
Ben Feng Gao
Keyword(s):  
Eigenvalue Analysis ◽  
Small Signal ◽  
Analysis Method ◽  
Subsynchronous Oscillation ◽  
Electromagnetic Transient ◽  
Hvdc System ◽  
Electromagnetic Transient Simulation ◽  
Linearized Model ◽  
Oscillation Characteristics ◽  
Oscillation Characteristic

Subsynchronous Oscillation problems caused by HVDC system are studied and analyzed intensively in this paper based on eigenvalue analysis method. By establishing the small signal linearized model of a typical HVDC system, subsynchronous oscillation characteristics of the system with or without SSDC are obtained. Further more, the influence of SSDC parameters to the system subsynchronous oscillation characteristic can be illustrated clearly. This is significant for SSDC design in order to achieve a satisfied restraining effect. Comparing with more accurate electromagnetic transient simulation results, the consistency of the two methods is verified and it can be demonstrated that eigenvalue analysis method is adequate for studying subsynchronous oscillations.

scholarly journals Research on the Unstable Branch Screening Method for Power System With High-Proportion Wind Power

2022 ◽  
Vol 9 ◽  
Author(s):  
Fei Tang ◽  
Xiaoqing Wei ◽  
Yuhan Guo ◽  
Junfeng Qi ◽  
Jiarui Xie ◽  
...  
Keyword(s):  
Power System ◽  
Wind Power ◽  
Wind Farm ◽  
Simulation Analysis ◽  
Screening Method ◽  
Prediction Method ◽  
Stability Margin ◽  
Screening Methods ◽  
Unstable Branch ◽  
Oscillation Characteristics

The sooner the system instability is predicted and the unstable branches are screened, the timelier emergency control can be implemented for a wind power system. In this paper, aiming at the problem that the existing unstable branch screening methods are lack prejudgment, an unstable branch screening method for power system with high-proportion wind power is proposed. Firstly, the equivalent external characteristics model of the wind farm was deduced. And based on this, the out-of-step oscillation characteristics of the power system with high proportion wind power was analyzed. Secondly, based on the oscillation characteristics, line weak-connection index (LWcI) was proposed to quantify the stability margin of a branch. Then an instability prediction method and an unstable branch screening method were proposed based on LWcI and voltage phase angle difference. Finally, the rapidity and effectiveness of the proposed method are verified through the simulation analysis of IEEE-118 system.

Model Verification of Fixed Series Compensation Devices Using Synchronized Data

2016 ◽  
Vol 31 (1) ◽  
pp. 174-181 ◽  
Author(s):  
Swaroop Gajare ◽  
Ashok Kumar Pradhan ◽  
Sukumar M. Brahma
Keyword(s):  
Model Verification ◽  
Series Compensation ◽  
Fixed Series Compensation
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