Coordination of Multistage Scheduling Strategy in Cogeneration System

2018 2nd International Conference on Power and Energy Engineering

Li, Zhenyu^1 ; Zhao, Dong^1 ; Ye, Qing^1 ; Ma, Guibo^1

State Grid Liaoning Electric Power Supply Co. Ltd, Fuxin Power Supply Company, Fuxin, China^1

关键词: Cogeneration systems;    Coupling characteristic;    Dispatching models;    Energy flow method;    Energy flow modeling;    Large-scale wind power;    Optimized scheduling;    Scheduling strategies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/192/1/012002/pdf
DOI  :  10.1088/1755-1315/192/1/012002

来源: IOP

【 摘 要 】

Due to the characteristics of wind intermittent, fluctuating, anti peak, and large prediction error, large-scale wind power access to the grid has brought negative impact on the planning and operation of the power grid. The contradiction between the power load and the peak and valley of the heating load expands the difficulty of the power grid to reduce the wind power. In addition, the thermoelectric coupling characteristic of the cogeneration unit determines the limit of the electric output regulating range of the thermoelectric unit, and the planning and operation policy of the thermoelectric co production unit with thermal power intensifies the problem of the high incidence of the discarded wind in the heating season. According to the analysis of the energy flow model of the electric heating combined system, the energy flow method is used to optimize the dispatching model and improve the capacity of wind power consumption during the heating period. The results show that the use of the electric heating station can increase the low valley electric load, reduce the thermal power output of the unit and leave the space for the wind power network. The indoor temperature of the user affects the heat load, and then affects the total amount of the wind power consumption, and the optimal scheduling results calculated by the optimized scheduling model considering the constraints of the heat transfer link are more accurate and feasible.