| Title |
Effect of Volt-Var Characteristic Curve Slope on Voltage Oscillation |
| Authors |
맹창엽(Chang-Yeop Maeng) ; 조종민(Jong-Min Jo) ; 명노길(No-Gil Myoung) ; 김현진(Hyeon-Jin Kim) ; 조성수(Seong-Soo Cho) |
| DOI |
https://doi.org/10.5370/KIEE.2022.71.1.105 |
| Keywords |
Distributed Energy Resource; Distribution Line Impedance; Voltage Regulation Algorithm; Active Voltage Control; Volt-Var Control |
| Abstract |
The penetration of Renewable Energy Source (RES) has been increasing because RES is drawing attention by the environmental problem in the worldwide. The power flow can be changed from unidirectional to bidirectional because of increasing the penetration of RES. In bidirectional system, the efficient operation of conventional Voltage Regulators (VRs) is difficult. As one of the various methods to reinforce the conventional VR, the Volt-Var control of the Smart Inverter (SI) is used for supporting the voltage by using the reactive power of RES. This paper verifies the operating principle of the Volt-Var control function of the inverter and the oscillation phenomenon according to the slope of the Volt-Var curve was confirmed through theory, simulation, and demonstration site |