A control method and system of a converter station
By analyzing the input current of the sending-end converter station to generate control signals, and using circuit equivalent models and iterative algorithms for precise calculations, the problems of control oscillation and DC power fluctuation caused by frequent tap switching in the converter station are solved, thereby improving the stability and reliability of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- STATE GRID ECONOMIC TECH RES INST CO LTD
- Filing Date
- 2026-03-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing converter station technology relies on frequent tap changer switching when facing AC grid voltage fluctuations, leading to control oscillations and DC power fluctuations, which reduces the stability and operational reliability of the AC-DC conversion system.
By analyzing the input current of the sending-end converter station, firing angle, reactive power, and DC voltage control signals are generated. The circuit equivalent model and iterative algorithm are used for accurate calculation and prediction, which replaces the mechanical tap changer action and realizes dynamic adjustment of voltage and power.
It eliminates control oscillations and DC power fluctuations, avoids protection lockout, and significantly improves the stability and operational reliability of AC/DC conversion systems.
Smart Images
Figure CN122418801A_ABST