Optimal dispatch between combined heating & power(CHP) and wind turbines through electric heat pumps (EHPs)

In China, there have been high penetrations of coalfired cogeneration facilities which are generally equipped with extraction-condensing steam turbines. Considerable coal is consumed in the power generation sector, and a lot of wind power resources may be abandoned simultaneously, which has been a ridiculous phenomenon in practice in Northern China. A proposal is given in this article, so as to enable the more integration of wind power. The authors suggest that if the energy carrier for part of the end users´ space heating are switched from heating water to electricity [e.g. electric heat pumps (EHPs) can provide space heating in the domestic sector], the ratio of electricity to heating water load should be adjusted to optimize the power dispatch between combined heating and power (CHP) facilities and wind turbines. Finally a numerical simulation is performed to illustrate both the technical and economic feasibility of the aforementioned proposal, under ongoing infrastructures as well as electricity and space heating tariff conditions without changing participants´ benefits.