Research on Influence Factor of Primary Frequency Regulation Performance for Thermal Power Plant

Abstract:

As a basic auxiliary service, primary frequency regulation (PFR) is provided with significant effect in secure and stable operation for grids. Thermal power plants undertake important task in PFR by virtue of it is main type in grid-connected power plants. However, some problems such as slow response, inadequate load variable quantity, or even reverse regulating effect exist in actual PFR process. In PFR relative control logic, PFR command, load variable quantity command and main steam pressures influence must be taken into consideration. Regulating valves flow characteristics and adjustment of overlap degree can result in imbalance of load regulating under different working point. Frequency data utilized by grid dispatching center and power plant are inconsistent so that PFR evaluation may be affected. On the premise of safe operation in power plant, energy storage can improve units load in a fast time. A series of optimization measurements are put forward on the basis of the above four influence factors. In accordance with respective influence characteristics, these measurements possess a certain reference significance to improve performance index of PFR.

• Periodical: Applied Mechanics and Materials (Volumes 448-453)
• Pages: 2040-2044
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.448-453.2040
• Online since: October 2013
• Authors: Zheng Yu Liang*, Shan Shan Li
• Keywords: Flow Characteristic, Frequency Deviation Signal, Influence Factor, PFR, Units Energy Storage

References

[1] Yu Daren, Guo Yufeng: Proceedings of the CSEE Vol. 24 (2004), pp.72-76.

[2] Yang Jianhua: Automation of Electric Power Systems Vol. 32 (2008), pp.96-99.

[3] Li Duancao, Chen Shi, Chen Zhonguan, Lu Jintian: Automation of Electric Power Systems Vol. 28 (2008), pp.70-72.

[4] Liu Xiaoqiang, Wang Xitian: Journal of Engineering for Thermal Energy and Power Vol. 23 (2008), pp.140-143.

[5] Du Liang, Liu Junyong, Xiao Lan: Electric Power Automation Equipment Vol. 27 (2007), pp.1-6.

[6] Chen Xiaoqiang, Xiang Jin, Wei Luping: Electric Power Vol. 43 (2010), pp.63-66.

[7] Yang Zhenyong, Li Weihua, Luo Yi: North China Electric Power (2008), pp.16-20.

[8] Luo Jianyu, Wang Xiaoying, Lu Tingrui: Automation of Electric Power Systems Vol. 27 (2003), pp.78-80.