Method for establishing single-ended electromagnetic transient model of high-voltage direct-current transmission system

• Main Authors: YANG LICHAO, WANG NAN, ZHANG YUYUE, ZHAO LONG, GAO XIAOHAI, WEI XIN, TIAN XIN, YANG SI, ZHANG LINA, FU YIMU, CHENG PEIFEN, LI WENSHENG, YANG BIN, MOU YING, JIAN QINGZHI, WEI JIA, ZHANG DONGLIANG, YUAN ZHENHUA
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2022
• Subjects: CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERATION; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a method for establishing a single-end electromagnetic transient model of a high-voltage direct-current transmission system. The method comprises the following steps: establishing an electromagnetic transient model of a double-end HVDC primary equipment system; the electromagnetic transient model of the double-end HVDC primary equipment system comprises mathematical models of a converter transformer, a converter, a smoothing reactor, a direct-current filter and a direct-current line on a rectification side and an inversion side; equivalence processing is carried out on the rectification side, the rectification side is equivalence to be in the form of a direct-current voltage source with variable amplitude and a resistor, and an electromagnetic transient model of the double-end HVDC primary equipment system is simplified; equivalence is carried out on a rectification side through a quasi-steady-state model, an electromagnetic transient model is adopted on an inversion side, a control sy