IGCT-BASED CONTROLLABLE REACTIVE POWER COMPENSATION DEVICE TOPOLOGY AND CONTROL METHOD THEREFOR

• Main Authors: WANG, Shuaiqing, HONG, Bo, YUAN, Hongtao, LIU, Kun, HAN, Kun, LIU, Guan, HU, Qiuling, TIAN, Qi, SHAO, Zhuke, WANG, Yuding, HUANG, Yongrui, FAN, Caiyun, ZHANG, Kun
• Format: Patent
• Language: Chinese; English; French
• Published: 11.08.2022
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

Disclosed are an IGCT-based controllable reactive power compensation device topology and a control method therefor. Said device topology comprises: a capacitor module, an inductor and a controllable module; the inductor is connected to the capacitor module in series; the capacitor module comprises a fixed capacitor unit and a controllable capacitor unit connected in series, the controllable capacitor unit being connected to the controllable module in parallel; and the controllable module bypasses the controllable capacitor unit when a line voltage is reduced due to a failure of an alternating current power transmission line, so as to increase the reactive power compensation capacity of the compensation device and further stabilize the line voltage, and after the failure of the alternating current power transmission line disappears and the line voltage recovers to a preset voltage upper limit value, the controllable capacitor unit is put into use again, so as to reduce the reactive power compensation capacity