STATCOM을 활용한 FIDVR 완화 방안에 대한 연구

• Published in: 전기학회 논문지 P권, 67(4) Vol. 67P; no. 4; pp. 208 - 213
• Main Authors: 이윤환(Yunhwan Lee), 정승민(Seungmin Jung)
• Format: Journal Article
• Language: Korean
• Published: 대한전기학회 2018
• Subjects: 전기공학; Voltage stability; STATCOM; Dynamic voltage support; Fault induced delated voltage recovery
• ISSN: 1229-800X; 2586-7792

In this paper, we studied the control strategy of applying STATCOM(static synchronous compensator) to mitigate the FIDVR(fault induced delayed voltage recovery) phenomenon. The proportion of motor loads is gradually increasing which might affect power system stability. Excessive reactive power consumption by the stall of the motor loads causes FIDVR phenomenon. In addition, the low inertia of the small HVAC(heating, ventilation and air conditioner) unit will not separate itself in the event of a contingency, causing system instability. For this reason, we have developed a control strategy that utilizes STATCOM efficiently through static and dynamic analysis. Case studies on a Korean power system have validated the performance of the proposed scheme under severe contingency scenarios. The results have verified that the proposed strategy can effectively mitigate FIDVR and improve the stability and reliability of the system.