Abstract
The contradiction between seasonal heating demand and large-scale wind power accommodation causes wind curtailment at nighttime during high heat load period. How to improve wind power accommodation has become a concern of the whole society. Aiming at this problem, the electrothermal characteristics of Combined Heat and Power (CHP) units are briefly reviewed, and then the relevant research results at home and abroad are summarized from the aspects of adding electrothermal coupling equipment and grid lean dispatching. The paper summarizes the principle and characteristics of adding electric boilers and heat storage devices to improve wind power accommodation, as well as the lean dispatching methods of the power grid for the CHP units. The practical application of decoupling thermoelectric coupling constraints at home and abroad is also expatiated. Finally, the next step work that needs carrying out in the power side and the grid scheduling side is pointed out.
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