Electricity Pricing for Natural Gas CHP Projects The Higher, the Better?

Regarding the state's policy that gives a higher on-grid electricity price to natural gas CHP (combined heat and power) projects, this paper studies the effect of it on the operation of those projects by theoretical analysis and a case study. It concludes that on-grid electricity price on the high side, compared to heat price, will lead power plants to produce more electricity but less heat, thus causing decrease of the plants' thermal eff iciency and harm to energy saving of the whole society.

考虑P2G-VPSA联合供氧和弹性共享电价的虚拟电厂优化调度

针对西藏地区高原供氧需求和高渗透可再生能源在时空尺度的差异性问题,提出一种经济、低碳的虚拟电厂集群调度策略。以最小经济成本为目标,考虑电转气-变压吸附分离空气制氧联合供氧模式,在热电联产的基础上建立电、氧、热三联产供需侧灵活响应机制,通过能源聚合商发布实时群内共享电价,引导集群优化。运用Gurobi求解器进行求解,设置4种情景进行对比分析,算例表明相较于其他情景,所提策略对虚拟电厂集群提升经济效益和降低碳排放的综合效果最优。