中压配电网串联TCSC调压的应用研究

摘要

利用TCSC可以平滑地调节阻抗,实现对不同线路参数或不同负荷的线路进行电压调节,稳定负荷侧电压.对线路电压调节时考虑线路横向压降的影响,从而得到串联补偿容抗计算公式;由于晶闸管的导通压降会影响TCSC的等效基波容抗,因而采用串接受控电压源来消除影响;最后通过TCSC对辐射线路电压调节的仿真分析,说明仿真时通过串接受控电压源可以消除晶闸管导通压降对调压的影响,而在实际应用中只需对查表进行修正,则同样可实现对电压进行精确调节.%Through TCSC we can adjust impedance smoothly, realize voltage regulation for different line parameters or lines with different loads, and stabilize load-side voltage.The impact of line lateral voltage drop is considered in line voltage regulation, and the calculation formula is obtained for the capacitive reactance for series compensation.As the turn-on voltage drop of the thyristor may affect the capacitive reactance of the equivalent fundamental frequency of TCSC, a series controlled voltage source is used to eliminate the influence.Finally, simulation analysis of voltage regulation on the radial supply line through TCSC shows that the series controlled voltage source in the simulation can eliminate the impact of the thyristor turn-on voltage drop upon voltage regulation.In practical applications, what is required for accurate voltage regulation is just to adjust the lookup table.