| 摘要 |
The purpose of the invention is to quickly bring a DC power transmission system into a steady state when the DC power transmission system is started up and when the power flow is reversed. A power converter control device is equipped with constant voltage control circuits (11A, 11B), constant current control circuits (12A, 12B), minimum value selection circuits (13A, 13B), a DC current setting unit (16), and current margin setting units (15A, 15B). When a power converter (5B) is started up as a reverse converter, the DC current setting unit (16) increases a DC current setting value (Idp). The current margin setting unit (15B) increases the current margin (ΔId2) of the power converter (5B). The constant current control circuits (12A, 12B) output a phase-control angle to the power converter (5B) on the basis of the difference between the current margin (ΔId2) and the DC current setting value (Idp) and the input of DC current (Id2). |
