For achieving effective control and monitoring of DC converter station based on LCC topological structure

a kind of DC transmission pole control system with full digital communication interface based on embedded platformVx Works is designed in this paper.This system adopts the Vx Works embedded real-time operating system develop-ment application program and implements the PIC closed-loop control algorithm and automatic control selection func-tion

which can achieve real time control and monitoring of period up to a hundred microseconds level for the convert-er station. Moreover

the system also adopts such digital communication protocols as Profibus

IEC 60044-8—2002 and GOOSE to achieve the highly reliable pole control equipment with fully digitalized external interface. The controlsystem can be applied to the fields of medium and low voltage DC transmission and distribution field and can

afterperformance test verification of a 50 A ±20 k V back-to-back DC transmission system model

meet the real-time andreliability requirements of data transmission and the system control specification.