Automatic generation control of thermal power system under varying steam turbine dynamic model parameters based on generation schedules of the plants

The Journal of Engineering

Terlochan Singh Bhatti¹  Nikhil Pathak¹  Ashu Verma¹ 

[1]Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India

关键词: AGC;    intermediate-pressure turbines;    dynamic performance;    power fractions;    power generation levels;    high-pressure turbines;    steam turbine dynamic model parameters;    thermal power system;    turbine time constants;    heat balance data;    plant generation scheduling;    automatic generation control;    reheater;    power 500 MW;    low-pressure turbines;    thermal power plants;    steam chest;    cross-over inlet piping;    power system load;   

DOI  :  10.1049/joe.2016.0178

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

This paper investigates the automatic generation control (AGC) of thermal power system operating under different power generation levels/schedules of the plants. The power system load varies considerably over the period of 24 hours and accordingly thermal power plants are planned to operate at different generation schedules. It has been discovered that the steam turbine dynamic model parameters also changes along with generation schedules of the plant. Typical steam turbine model parameters are the turbine time constants and power fractions. The literature survey reveals that steam turbine dynamic model parameters are assumed to be constant in all preceding studies pertaining to AGC systems, irrespective of generation schedules of the plant. In this paper, steam turbine dynamic model parameters have been computed for an actual 500 MW thermal unit at different generation schedules. These steam turbine dynamic model parameters have been used to study the dynamic performance of AGC system. The paper also presents the general mathematical procedure to calculate steam turbine dynamic model parameters from an actual generating unit using the heat balance data of a thermal power plant. Results for two area thermal power system demonstrate the potential of the proposed approach.

【 授权许可】

CC BY