E3S Web Conf.
Volume 38, 20182018 4th International Conference on Energy Materials and Environment Engineering (ICEMEE 2018)
|Number of page(s)||4|
|Section||Environmental Science and Environmental Engineering|
|Published online||04 June 2018|
PFC Performance Improvement of Ultra-supercritical Secondary Reheat Unit
State Grid Shandong Electric Power Research Institute, Ji'nan, Shandong 250002, China
2 Network Center, Shandong University of Arts, Ji'nan, Shandong 250014, China
3 State Grid Shandong Electric Power Company, Ji'nan Shandong 250001, China
* Corresponding author: email@example.com
Ultra-supercritical secondary reheat unit has been widely used in the world because of its advantages of large capacity, low consumption and high efficiency etc., but rapid load change ability of the turbines to be weakened which caused by its system organization, cannot meet the requirements of power grid frequency modulation. Based on the analysis of the control characteristics of ultra-supercritical once-through reheat unit, the primary frequency control based on feed-water flow overshoot compensation is proposed. The main steam pressure generated by the feed-water is changed to improve the primary frequency control capability. The relevant control strategy has been applied to the 1000MW secondary reheating unit. The results show that the technology is feasible and has high economical efficiency.
© The Authors, published by EDP Sciences, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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