A Study on the Modification of Frequency Detection Methode for Cheju-Heanam HVDC System

제주-해남 HVDC 시스템의 주파수 검출방식 변경에 관한 연구

In this paper deals with the frequency control of the HVDC scheme linking Haenam to Cheju Island. The primary aim of the study is to develop and evaluate a new frequency control that can be employed without having to utilize the existing Synchronous Compensators(Gas Turbines). Study cases are completed involving synchronous compensators trip and load tripping events and study plots presented. It is demonstrated that the existing frequency measurement can be replaced by one derived from the AC network alone, incorporated into a new frequency control algorithm and gives good frequency control and dynamic performance.