Abstract
Thermal power plants are involved in load regulations of the electric grid. Therefore, operation with significant load variations becomes a normal working state of thermal power plants. In order to get the energy consumption characteristics of power plants during transient processes, the dynamic models of a 660MW unit were developed based on GSE software, in which the heat storage and control systems of power plant were taken into account. The energy consumption of the power plant with different load-variation rates were obtained, which were compared with results calculated with the steady state models. Results show that, compared with results obtained with steady state models, the standard coal consumption increases 2.2g/(kW·h) at most during loading up process and decreases 2.04g/(kW·h) at most during loading down. The differences of the average coal consumption rates between the dynamic models and the steady state models are not same with different load-variation rates. The maximum difference of average coal consumption between the dynamic models and the steady state models is 0.72g/(kW·h) and 0.27g/(kW·h) during the loading up and loading down process, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 5665-5673 |
| Number of pages | 9 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 37 |
| Issue number | 19 |
| DOIs | |
| State | Published - 5 Oct 2017 |
Keywords
- Energy consumption
- Heat storage
- Load variation rate
- Thermal power unit
- Transient processes
