有效消纳风电的储热与储能装置热-电联合系统

Wind Power Accommodated Electricity-heat Combined System With Thermal Storage and Energy Storage Device

"三北地区"冬季弃风现象日益严重,如何有效地消纳弃风是急需解决的关键问题。应用大容量储热装置虽然能够增强电网运行控制的灵活度,提升系统消纳弃风的能力,但是仅仅依靠储热装置并不能完全消纳弃风。提出储热装置与电动汽车耦合的热电联产弃风消纳协调调度模型。通过对储热环节与储能环节的控制,打破电-热刚性耦合关系,提高系统消纳弃风的能力。采用10机系统进行仿真分析,对比了储热装置不同工作方式及储热装置与电动汽车协调供热时的经济性,仿真结果验证了储热与储能装置协调供热时更具经济性,风电消纳能力更强。

Three North area is confronted with the serious wind curtailment in winter,how to effectively accommodate wind power became an urgent problem. The thermal storage can be applied in electricity-heat combined system to enhance the flexibility of power system and improve wind power accommodation, but it can＇t absorb the wind power completely. Therefore a coordinated wind power accommodation dispatch model is proposed based on CHP considering thermal storage and electric vehicles. By controlling the thermal storage and energy storage, the rigid coupling relationship between electricity and heat is broken, and the adjustment capacity of the system is enhanced. A test system with ten units is studied. Then the economy had been compared considering the thermal storage device work alone or does not work, as well as the thermal storage and electric vehicles coordinately. Example results show that the best economy could be achieved when the thermal storage and electric vehicles work coordinately, as well as the wind power accommodation could be improved.