| Abstrakt: |
As renewable power sources are increasing worldwide, those of South Korea are also expanding. South Korea is conducting a variety of research on renewable energy policies and technologies in order to install the renewable energy of about 58GW until 2031. In particular, South Korea is establishing a new grid code criteria based on the expansion of renewable energy. Currently, its grid code criteria consists of the frequency range, voltage range, and LVRT(Low Voltage Ride Through), etc. This paper explains the new grid code for active power, reactive power, and FRT(Fault Ride Through) that are conducted in South Korea. First, we create databases that include renewable power sources to simulate the grid code criteria. Second, we introduce the frequency range about the active power control for upper and lower frequency. Third, we present the reactive power control method, which is the reactive power requirement and operating range according to the voltage range. Fourth, we cover the FRT requirements: LVRT. When the renewable power source is expanded and the existing LVRT standard is applied, if any disturbance occurs, the renewable power source is dropped due to the violation of the LVRT standard. Therefore, we have applied a new LVRT characteristic curve. In this paper, we performed various grid analysis procedures on the newly developed grid code for the power system that includes renewable power sources. The active power, reactive power, and FRT criteria were examined based on PSS/E Python. [ABSTRACT FROM AUTHOR] |
