Abstract
In this paper, in the power system having UPFC(Unified Power Flow Controller) Power flow of certain line is controlled to desired value also power flow analysis algorithm is reposed considering power flow constraints which is capable of analysis power flow of all system. This algorithm is applied to controlling line-overloading problems and the method of is prosed. By applying this algorithm to controlling line-over loading the method of controlling UPFC is proposed and the effectiveness of controlling UPFC is proposed and the effectiveness of controlling UPFC is verified through the research of practical system. Also, the equation to set up an initial value of stories and shunt voltage source of UPFC is proposed for the effective power analysis.
본 논문에서는 UPFC(Unified Power Flow Controller)설치 전력계통에서 어떤 선로의 전력조류를 원하는 값으로 직접 제어함과 동시에 계통 전체의 전력조류해석을 행하는 선로조류제약을 고려한 전력조류해석 알고리즘을 제시하고 이 알고리즘을 UPFC에 의한 과부하선로의 과부하해소제어에 적용하여 UPFC 제어 방법을 제시하고 사례연구를 통하여 UPFC의 제어효과의 효용성을 입증하였다. 또한 효과적인 조류해석을 위한 UPFC의 직·병렬 전압원의 초기치를 설정하는 공식을 유도하였다.