Analysis on Primary Frequency Regulation of 1 000-MW Double-Reheat Ultra-Supercritical Units

doi:10.11930/j.issn.1004-9649.201708148

Abstract

Abstract: In this paper, through the analysis on the primary frequency regulation performance of 1 000-MW double-reheat ultra-supercritical units, the major factors affecting the primary frequency response of double-reheat units are expounded from the aspects of furnace characteristics, control strategies and operation modes. Moreover, the impact of frequency modulation on the unit coal consumption rate using main steam regulating valve throttling is evaluated for a 1 000-MW ultra-supercritical double-reheat unit. Based on the feasibility analysis of throttling frequency modulation, condensate frequency modulation and feed water frequency modulation, the method to improve the primary frequency regulation capability of 1 000-MW ultra-supercritical double-reheat units is discussed in order to provide reference for the design and operation of the double-reheat units in the future.

Key words: ultra-supercritical double-reheat unit, primary frequency regulation, net coal consumption rate, overload valve

CLC Number:

TK267

XU Xing, TAN Rui, LI Yongsheng, CAI Pei, HUANG Qilong, MA Xiaofeng. Analysis on Primary Frequency Regulation of 1 000-MW Double-Reheat Ultra-Supercritical Units[J]. Electric Power, 2018, 51(2): 169-175.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201708148

https://www.electricpower.com.cn/EN/Y2018/V51/I2/169

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