| Title |
Instantaneous Active/Reactive Power Compensation of Distribution Static Compensator using State Observer |
| Authors |
김형수(Kim, Hyeong-Su) ; 최종우(Choi, Jong-Woo) |
| Keywords |
DSTATCOM ; State observer ; Unbalanced load ; Custom Power Devices |
| Abstract |
DSTATCOM(distribution static compensator) is one of the custom power devices, and protects a distribution line from unbalanced and harmonic current caused by non-linear and unbalanced loads. Researches about DSTATCOM are mainly divided two parts, one is the calculation of compensation current and the other part is the current control. Conventional researches use a LPF(low pass filter) to eliminate ripple component at the calculation of compensation current. But this method has a problem that LPF's characteristics restrict the compensation performance of instantaneous active and reactive power. This paper proposes a calculation of compensation current using state observer that can be a counterproposal of conventional methods using LPF. Improved performance of instantaneous active and reactive power compensation was shown by experiments. |