| Title |
Frequency Profile Improvement of a Microgrid under Abnormal Conditions via a Demand Response Program |
| Authors |
Muhammad Saeed uz ZamanMuhammad Saeed uz Zaman ; Raza HaiderRaza Haider ; Syed Basit Ali BukhariSyed Basit Ali Bukhari ; Yun-Sik Oh ; Min-Sung Kim ; Muhammad MehdiMuhammad Mehdi ; Chul-Hwan Kim |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2017.31.10.050 |
| Keywords |
Demand Response ; Frequency Deviation ; Frequency Regulation ; Microgrid ; Voltage Profile |
| Abstract |
The frequency deviation of an electric power system from its nominal range is a significant indicator of the system’s instability. This issue is further highlighted when the system is incorporated with intermittent renewable energy resources. In this work, the frequency regulation of a microgrid is achieved by a demand response program. The proposed plan is implemented in a central controller that has two control sections. The frequency deviation is controlled by manipulating responsive loads. In the case of higher frequency deviation, the command of the first control section is proportional to the magnitude of frequency deviation and a large amount of responsive loads is manipulated to restore the frequency to its nominal range quickly. The other section of the central controller addresses minor frequency deviations. The proposed plan is implemented on a test system and outperforms the conventional methods in terms of frequency restoration. The improvement in voltage profile is also observed during abnormal conditions after the proposed plan is implemented. |