Patent ID: 11953937
Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 0:
1. An apparatus for synchronizing a clock of valve base electronics (VBE) in a high-voltage, direct current (HVDC) system, comprising:
an operation board for generating a reference clock; and
interface boards for controlling submodules on and off by being synchronized to the reference clock,
wherein the operation board comprises: a first operation board configured to operate as either a master or a slave board; and a second operation board configured to operate as the slave board if the first operation board is the master board and operate as the master board if the first operation board is the slave board, and
wherein each of the first operation board and the second operation board comprises:
a one-pulse-per-second (1PPS) signal inputting unit for inputting a 1PPS reference signal from a time server; a system clock-generating unit for generating a system clock in the first operation board itself;
an error compensation module for compensating an error between an output of the 1PPS signal-inputting unit and an output of the system clock-generating unit;
an error compensated clock generating unit for generating a clock by compensating the error; and
a clock synchronization module for performing synchronization with a reference clock outputted from the second operation board.