Research on Optimal Control of PFC of Thermal Power Units in DC UHV Grid

Autor:	Gao Song, Meng Xiangrong, Weiwei Miao, Li Jun
Rok vydání:	2020
Předmět:	Computer science Thermal power station Optimal control Grid Automotive engineering
Zdroj:	IOP Conference Series: Earth and Environmental Science. 474:052019
ISSN:	1755-1315 1755-1307
DOI:	10.1088/1755-1315/474/5/052019
Popis:	By analyzing the change of grid frequency during direct current(DC) ultra high voltage(UHV) faults this year, it is found that the use of conventional primary frequency control(PFC) technology in thermal power units cannot suppress the occurrence of extreme frequency of the power grid, and the conventional PFC method can no longer adapt to the frequency control of the power grid. By analyzing the control signals and control logic of the unit participating in the frequency regulation of the power grid, the PMU(phasor measurement unit) frequency signals that are closely connected to the power grid are introduced, and the second-order differential feed-forward is used to achieve overshoot compensation, which makes the frequency modulation action faster and more accurate, ensuring the power grid’s safe and stable operation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cc259a832bedbd04ba8dd9935eeaf1b8 https://doi.org/10.1088/1755-1315/474/5/052019 Zobrazit plný text záznamu