In order to solve the contradiction between the heating demand of the unit and the peak regulating of the power grid

three kinds of thermo-electricity decoupling schemes for operation mode

equipment reformation

and system structure are compared and analyzed. It is recommended to use the bypass scheme of main steam and reheat steam for thermo-electricity decoupling of steam bypass for the actual unit. At the same time

for the evaluation of the thermo-electricity decoupling scheme

the maximum heating capacity and the minimum electric load capacity of the unit are put forward as the quantitative evaluation index. The analytical results show that

after adopting the steam bypass decoupling scheme for a unit

the heating capacity increases by 119 MW and the minimum electric load decreases by 46 MW. When the steam bypass expansion scheme is adopted

the heating capacity increases by 180 MW and the minimum electric load decreases by 89 MW.