计及碳捕获的含P2G微电网能量调度模型

Energy scheduling strategy model of microgrid with P2G considering carbon capture

在低碳经济背景下,具有弃风弃光消纳和碳捕获能力的电转气(P2G)技术是微电网系统实现能源清洁低碳化利用的重要支撑技术。本文首先构建含P2G设备的微电网系统,并重点对燃气轮机、碳捕获及P2G设备进行建模分析,以含P2G微电网的经济性、舒适性及低碳环保性为目标函数,以电网、气网功率平衡和设备功率限制等为约束条件,建立多目标优化调度模型;采用含精英策略的非支配排序遗传优化算法(NSGA-Ⅱ)求解得到帕累托解集,算例分析P2G及碳捕获设备对系统产生的影响,结果表明:本文含P2G微电网调度系统模型可有效减少弃风弃光现象,碳捕获系统捕捉燃气轮机排放的CO_(2),明显改善了环保性;P2G设备进行能量转换增加了微电网系统利润。

In the context of a low-carbon economy,power to gas(P2G)technology,which has the ability to absorb wind,light,and capture carbon,is an important supporting technology for the microgrid system to achieve clean and low-carbon utilization of energy.This research constructs a microgrid system containing P2G equipment and focuses on modeling and analysis of gas turbines,carbon capture and P2G equipment.A multi-objective optimal scheduling model is established on the basis of taking the economy,comfort and low-carbon environmental protection of microgrid with P2G as the objective function,and the network power balance and equipment power limitations as the constraints.The non-dominated sorting genetic optimization algorithm(NSGA-II)is used to solve the Pareto solution set.The calculation example analyzes the impact of P2G and carbon capture equipment on the system.The results show that,the micro-grid system with P2G can effectively reduce the abandonment of wind and light,and the carbon capture system can capture the carbon dioxide emitted by gas turbines,which improves the environmental protection dramatically.The energy conversion of P2G equipment increases the profit of micro-grid system.