In order to solve the problem of wind power accommodation

the heat supply units need to participate in peak regulation of the power grid as much as possible while undertaking the requirements for heating task. The heat supply unit is equipped with a Li Br absorption heat pump

which can recover the residual heat of the circulating water and increase the heat capacity of the unit. The thermoelectric relationship needs to be further analyzed and determined. A domestic model of a 300 MW heating unit is established to analyze the change in the thermoelectric relationship before and after the installation of the heat pump. The results show that

after the installation of two 46.6 MW Li Br absorption heat pumps

the heating load increases by 39 MW. At the same time

the maximum variable load range of the electric load at a given heat load can be increased by 9%. In actual operation

the change of circulating water temperature has a great influence on the minimum generating capacity of the unit

while the return water temperature of the heating network has little effect on the unit's thermoelectric relationship.