A turbine energy storage utilization evaluate method in thermal power unit

Qingru CUI, Yanqiu ZHENG, Yaohan WANG, Deliang ZENG

Abstract


In China, the improvement of thermal power unit's operational flexibility is an important way to solve the clean energy absorption problem. The comprehensive utilization of steam turbine energy storage is an effective way to improve the load regulation performance of thermal power unit. A turbine energy storage utilization comprehensive evaluate method is presented. In the method the unit performance influence and equipment safety influence of energy storage are normalizes as a single object optimization problem. The comprehensive index calculation result is used in online optimization of storage power utilizing range limiting. Test result shows that the comprehensive index calculation method can help restrain the negative influence of turbine energy storage utilization on equipment operation safety, thereby improves availability of the energy storage system and improves the operating flexibility of thermal power unit.

Keywords


thermal unit; dynamic performance; operation safety; comprehensive index

References


Liu J Z. "Basic issues of utilization of lage-scale renewable power with high security and efficiency", Proceeding of the CSEE, vol 33(16), pp. 1-6.

Xie X. "Research on coordinated control system for boiler turbine units guided by AGC Performance", North China Electric Power University, 2012, pp. 22-26.

Lausterer G K. "Improved maneuverability of power plants for better grid stability". Control Engineering Practice, 1998, vol 6(12), pp. 1549-1557.

Hu Y, Zeng D L, Liu J Z, et al. "Dynamic model for controller design of condensate throttling systems". ISA transactions, 2015, vol 58, pp. 622-628.

Wei Wang, Lu Li, Dongteng Long, et al. "Improved boiler-turbine coordinated control of 1000MW power units by introducing condensate throttling". Journal of Process Control, 2017, vol 50, pp. 11-18.

Yang G J, Liu J Z, Tan Wen. "An index based data - driven for evaluating the state stability in power plant", Thermal Power Generation, 2008, vol 37(1), pp. 45-48.

Wang P. "The research to the security evaluation of tank system at normal pressure". Daqing Petroleum Institute, 2003, pp. 52-54.

Lv Y. "The research and application of data-based process modeling methods", North China Electric Power University, 2014, pp. 40-42.

Lv Y, Liu J Z, Zhao W J, et.al. "Steady-state detecting method based on piecewise curve fitting", Chinese Journal of Scientific Instrument, 2012, vol 33(1), pp. 194-198.




DOI: http://dx.doi.org/10.22149/teee.v3i1.128

Refbacks



Copyright (c) 2019 Qingru CUI, Yanqiu ZHENG, Yaohan WANG, Deliang ZENG

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

SSL Certificate