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GTO 제어 SSSC가 설치된 계통의 RCF 해석법에 의한 고유치 해석
동무환(Moo Hwan Dong),김덕영(Deok Young Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper, the RCF(Resistive Companion Form) analysis method is used to analyze small signal stability of power systems including GTO controlled FACTS equipment such as SSSC. To apply the RCF analysis method in power system small signal stability problems, state transition equations of power system equipments and power systems with SSSC are presented. In eigenvalue analysis of power systems by the RCF analysis method, SSSC is modelled into the equivalents voltage source model and PWM switching circuit model. As a result of simulation, the RCF method is very powerful to calculate the oscillation modes exactly after the switching operations, and useful to analyze the small signal stability of power systems with periodic switching device such as SSSC.
TCSC를 포함한 일기무한모선계통에서 싸이리스터의 스위칭에 의한 진동모드 해석
동무환(Moo Hwan Dong),이윤호(Yun Ho Lee),김덕영(Deok Young Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper, RCF(Resistive Companion Form) analysis method which is used to analyze small signal stability problems of non-continuous systems including switching device. The RCF analysis method are applied to the power systems with the thyristor controled FACTS equipments such as TCSC. As a result of simulation, the RCF method is very powerful to calculate the oscillation modes exactly after the switching operations, and useful to analyze the small signal stability of power systems with switching devices such as FACTS equipments. As an applicable example of the RCF method in power system, the one machine infinite bus system including TCSC at generator terminal bus is investigated and the results proved that variations of oscillation modes after periodic switching operations of TCSC can be calculated exactly.
싸이리스터 제어 SVC를 포함하는 전력계통에서의 스위칭 점화각에 의한 고유치 해석
이윤호(Yun Ho Lee),동무환(Moo Hwan Dong),김덕영(Deok Young Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper, RCF analysis method which is very powerful to analyze non-continuous systems with switching elements is applied to small signal stability problems. As an effect of switching operations, the eigenvalues of system can be changed and newly unstable oscillation modes may be occurred. Also, changing firing angles of switching equipments may make the system stable or unstable. As an illustrating example, the oscillation modes of the system with different firing angles are computed by the RCF analysis method.
RCF 해석법을 사용한 스위칭 설비의 ON/OFF 시간간격에 의한 진동모드 해석
金德泳(Deok Young Kim),董武煥(Moo-hwan Dong),李倫浩(Yun Ho Lee) 대한전기학회 2006 전기학회논문지A Vol.55 No.1
In this paper, the RCF(Resistive Companion Form) analysis method which is used to analyze small signal stability problems of non-continuous systems including switching devices. The RCF analysis method is mathematically rigorous and computes eigenvalue of the system periodic transition matrix based on discrete system analysis method. As an effect of switching operations, the eigenvalues of the systems are changed and newly unstable oscillation modes may be occurred. As an illustrating example, the oscillation modes of the system with different switching time intervals are computed exactly by the RCF analysis method and the results show that ON/OFF time intervals of switching equipments are important factors to make the system stable or unstable. This result shows that the RCF analysis method is very powerful to analyze small signal stability problems of power systems including switching devices such as FACTS equipments.