VSI-based series compensation scheme for transmission lines

1999 ◽  
Vol 9 (2) ◽  
pp. 101-108
Author(s):  
B. Kasztenny ◽  
C. Hatziadoniu ◽  
A. Funk
Keyword(s):  
Transmission Lines ◽  
Compensation Scheme ◽  
Series Compensation

Study on the characteristics of secondary arc current of UHV high compensation degree TCSC line under the fine-tuning mode

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Baina He ◽  
Yadi Xie ◽  
Jingru Zhang ◽  
Nirmal-Kumar C. Nair ◽  
Xingmin He ◽  
...  
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Stability Margin ◽  
Transmission Capacity ◽  
Fine Tuning ◽  
Series Compensation ◽  
Arc Current ◽  
Compensation Device ◽  
The Stability ◽  
Recovery Voltage

Abstract In the transmission line, the series compensation device is often used to improve the transmission capacity. However, when the fixed series capacitor (FSC) is used in high compensation series compensation device, the stability margin cannot meet the requirements. Therefore, thyristor controlled series compensator (TCSC) is often installed in transmission lines to improve the transmission capacity of the line and the stability of the system. For cost considerations, the hybrid compensation mode of FSC and TCSC is often adopted. However, when a single-phase grounding fault occurs in a transmission line with increased series compensation degree, the unreasonable distribution of FSC and TCSC will lead to the excessive amplitude of secondary arc current, which is not conducive to rapid arc extinguishing. To solve this problem, this paper is based on 1000 kV Changzhi-Nanyang-Jingmen UHV series compensation transmission system, using PSCAD simulation program to established UHV series compensation simulation model, The variation law of secondary arc current and recovery voltage during operation in fine tuning mode after adding TCSC to UHV transmission line is analyzed, and the effect of increasing series compensation degree on secondary arc current and recovery voltage characteristics is studied. And analyze the secondary arc current and recovery voltage when using different FSC and TCSC series compensation degree schemes, and get the most reasonable series compensation configuration scheme. The results show that TCSC compensation is more beneficial to arc extinguishing under the same series compensation. Compared with several series compensation schemes, it is found that with the increase of the proportion of TCSC, the amplitude of secondary arc current and recovery voltage vary greatly. Considering various factors, the scheme that is more conducive to accelerating arc extinguishing is chosen.

Investigation of the Effect of Series Compensation on Fault Location for EHV Transmission Lines

1997 ◽  
Vol 30 (17) ◽  
pp. 491-495
Author(s):  
M. Al-Dabbagh ◽  
L. Al-Dabbagh ◽  
K.R. Aggarwal ◽  
A.T. Johns
Keyword(s):  
Transmission Lines ◽  
Fault Location ◽  
Series Compensation

Enhancement of Power System Dynamics Using a Phase Imbalanced Series Compensation Scheme

2010 ◽  
Vol 25 (2) ◽  
pp. 966-974 ◽  
Author(s):  
Dipendra Rai ◽  
G. Ramakrishna ◽  
Sherif O. Faried ◽  
Abdel-Aty Edris
Keyword(s):  
Power System ◽  
System Dynamics ◽  
Compensation Scheme ◽  
Series Compensation ◽  
Power System Dynamics

Study of Sub-Synchronous Control Interaction (SSCI) Based on the Test Signal Method

2014 ◽  
Vol 989-994 ◽  
pp. 2980-2984
Author(s):  
Ben Feng Gao ◽  
Jin Liu ◽  
Shu Qiang Zhao
Keyword(s):  
Transmission Lines ◽  
Large Scale ◽  
Simulation Method ◽  
Test Signal ◽  
Equivalent Model ◽  
Series Compensation ◽  
Synchronous Control ◽  
The Impact ◽  
Signal Method ◽  
Control Interaction

Large-scale wind turbine generators with power electronic converters that operate near series compensated transmission lines are susceptible to un-damped sub-synchronous oscillations. This sub-synchronous oscillation is called Sub-synchronous Control Interaction (SSCI). Based on PSCAD / EMTDC simulation platform the establishment of Double Fed Induction Generator (DFIG) equivalent inverter controlled sources and network model, and verify the correctness of the equivalent model. Analysis the impact of series compensation and rotor-side converter PI parameters characteristic of the SSCI based on test signal method and time-domain simulation method. The results show that increasing the degree of series compensation , inner gain constant increases and inner integral time decreases will help increase SSCI, outer ring of PI parameters has little effect on the SSCI .

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