Transmission line capacity improvement using thyristor controlled series compensation device considering voltage stability analysis

2019 ◽  
Vol 10 (3) ◽  
pp. 331
Author(s):  
Youssouf Amrane ◽  
Ahmed Amine Ladjici ◽  
Mohamed Boudour ◽  
Ali Elmaouhab
Keyword(s):  
Stability Analysis ◽  
Transmission Line ◽  
Voltage Stability ◽  
Series Compensation ◽  
Capacity Improvement ◽  
Compensation Device ◽  
Thyristor Controlled 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.

scholarly journals Power Flow and Transient Stability Enhancement using Thyristor Controlled Series Compensation

2018 ◽  
Vol 37 (4) ◽  
pp. 685-700 ◽  
Author(s):  
Zaira Anwar ◽  
Tahir Nadeem Malik ◽  
Tahir Abbas
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Dynamic Stability ◽  
Power Flow ◽  
Transient Stability ◽  
Dynamic Models ◽  
Efficient Solutions ◽  
Simulation Software ◽  
Series Compensation ◽  
Thyristor Controlled Series Compensation

TL (Transmission Line) congestion is a key factor that affects the power system operational cost. In addition of renewable generation in National Grid of Pakistan, transmission line congestion are frequent. Consequently, the network in this particular region faces severe congestion and dynamic stability problems. It has been planned that renewable plants shaved to curtail some available generation to minimize this inevitable congestion. However, one of the cost-efficient solutions to this problem is series compensation of lines using TCSC (Thyristor Controlled Series Compensation). It significantly increases the transfer capability of existing power transmission and enhances the dynamic stability of system at a lower cost, and has shorter installation time as compared to the construction of new TLs. This paper deals with the dynamic modeling of a TCSC in the NTDC (National Transmission and Dispatch Company) network with its applications to alleviate congestion during fault conditions. This study has been carried out using simulation software PSS/E (Power System Simulator for Engineers) which does not have a predefined dynamic model for TCSC, this leads to the necessity of creating a user defined model. The model of TCSC has been programmed in FORTRAN and compiled along with existing dynamic models of network components. The results indicate that power flow and dynamic stability of network is enhanced

The Applications of Series Compensation Device in 10kv Voltage Level

2014 ◽  
Vol 986-987 ◽  
pp. 586-588 ◽  
Author(s):  
Li Jun Qin ◽  
Jia Di Li
Keyword(s):  
Transmission Line ◽  
Distribution Network ◽  
Actual Situation ◽  
Series Compensation ◽  
Voltage Level ◽  
Fast Switching ◽  
Voltage Quality ◽  
Compensation Device

This paper analyzes the voltage quality problems on transmission line of 10kv distribution network, and then introduces a series compensation device, which is based on fast switching and can effectively solve the above problem. Furthermore, this paper calculates the voltage under a actual situation, which fits the expected results.

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