The penetration of wind power into global electric power systems is steadily increasing, with the possibility of 30% to 80% of electrical energy coming from wind within the coming decades. At penetrations below 10% of...The penetration of wind power into global electric power systems is steadily increasing, with the possibility of 30% to 80% of electrical energy coming from wind within the coming decades. At penetrations below 10% of electricity from wind, the impact of this variable resource on power system operations is manageable with historical operating strategies. As this penetration increases, new methods for operating the power system and electricity markets need to be developed. As part of this process, the expected impact of increased wind penetration needs to be better understood and quantified. This paper presents a comprehensive modeling framework, combining optimal power flow with Monte Carlo simulations used to quantify the impact of high levels of wind power generation in the power system. The impact on power system performance is analyzed in terms of generator dispatch patterns, electricity price and its standard deviation, CO2 emissions and amount of wind power spilled. Simulations with 10%, 20% and 30% wind penetration are analyzed for the IEEE 39 bus test system, with input data representing the New England region. Results show that wind power predominantly displaces natural gas fired generation across all scenarios. The inclusion of increasing amounts of wind can result in price spike events, as the system is required to dispatch down expensive demand in order to maintain the energy balance. These events are shown to be mitigated by the inclusion of demand response resources. Benefits include significant reductions in CO2 emissions, up to 75% reductions at 30% wind penetration, as compared to emissions with no wind integration.展开更多
风电等可再生能源高比例并网,是“双碳”目标下电力系统绿色低碳化转型的必经之路,但这也对电网安全运行带来了巨大的压力。因此,文中提出了一种基于博弈论的含碳捕集综合能源系统(Integrated Energy System, IES)优化调度策略。首先,...风电等可再生能源高比例并网,是“双碳”目标下电力系统绿色低碳化转型的必经之路,但这也对电网安全运行带来了巨大的压力。因此,文中提出了一种基于博弈论的含碳捕集综合能源系统(Integrated Energy System, IES)优化调度策略。首先,构建了促进风电消纳的综合能源系统内碳循环优化模型;然后,构建了含Stackelberg博弈的双层博弈调度模型,并证明该模型纳什均衡;最后,利用改进的差分进化算法求解双层博弈模型,以满足调度模型收敛速度需求。展开更多
“双碳”目标背景下,为解决热电联产机组“以热定电”模式导致的大规模弃风问题,本文提出基于先进绝热压缩空气储能电站(advanced adiabatic compressed air energy storage,AA-CAES)和综合需求响应的综合能源系统(integrated energy sy...“双碳”目标背景下,为解决热电联产机组“以热定电”模式导致的大规模弃风问题,本文提出基于先进绝热压缩空气储能电站(advanced adiabatic compressed air energy storage,AA-CAES)和综合需求响应的综合能源系统(integrated energy system,IES)供暖期弃风消纳策略。首先,在“源-储”两侧建立热电联产机组与AA-CAES电站耦合运行模型,分析耦合运行实现热电解耦机理;其次,在“荷”侧引入价格型和替代型需求响应机制来探寻负荷侧优化系统调度潜力;然后,在IES中引入碳捕集系统和阶梯型碳交易机制来约束碳排放,并在碳排放量最少、综合成本最低为目标构建IES运行基础上,引入模糊机会规划约束模型来分析风、光不确定性对系统调度影响;最后,利用西北某地区实际数据进行算例验证。结果表明:热电机组与AA-CAES电站耦合运行相较于未耦合运行可提高风电消纳率84.55%、降低总成本11.42%、减少碳排放20.28%;综合需求响应机制的引入可进一步提高风电消纳率35.00%、降低总成本20.93%、减少碳排放24.43%;风光不确定性的上升会提高与外部电网的交互成本。展开更多
针对区域综合能源系统(regional integrated e ner gy system,RIES)源荷主体互动少、碳排放强度高、风光消纳能力低以及整体运行效益差等问题,文中提出计及电-气-热价格需求响应的RIES经济低碳运行优化方法。利用电能、天然气、热能共...针对区域综合能源系统(regional integrated e ner gy system,RIES)源荷主体互动少、碳排放强度高、风光消纳能力低以及整体运行效益差等问题,文中提出计及电-气-热价格需求响应的RIES经济低碳运行优化方法。利用电能、天然气、热能共有的商品属性以及多元柔性负荷的可调度价值,建立电-气-热价格需求响应模型,有效增强了价格信号对负荷参与需求响应的激励效应;为充分挖掘系统的低碳潜力,引入阶梯型碳交易,完善实际碳排放模型;以系统运行成本最小为优化目标,研究不同运行方式对系统经济性和低碳性的影响。案例分析结果表明,所构建的运行优化模型采用价格需求响应和阶梯型碳交易协同优化方式,在实现负荷削峰填谷的同时可以兼顾系统运行的经济低碳性与风光消纳能力。展开更多
文摘The penetration of wind power into global electric power systems is steadily increasing, with the possibility of 30% to 80% of electrical energy coming from wind within the coming decades. At penetrations below 10% of electricity from wind, the impact of this variable resource on power system operations is manageable with historical operating strategies. As this penetration increases, new methods for operating the power system and electricity markets need to be developed. As part of this process, the expected impact of increased wind penetration needs to be better understood and quantified. This paper presents a comprehensive modeling framework, combining optimal power flow with Monte Carlo simulations used to quantify the impact of high levels of wind power generation in the power system. The impact on power system performance is analyzed in terms of generator dispatch patterns, electricity price and its standard deviation, CO2 emissions and amount of wind power spilled. Simulations with 10%, 20% and 30% wind penetration are analyzed for the IEEE 39 bus test system, with input data representing the New England region. Results show that wind power predominantly displaces natural gas fired generation across all scenarios. The inclusion of increasing amounts of wind can result in price spike events, as the system is required to dispatch down expensive demand in order to maintain the energy balance. These events are shown to be mitigated by the inclusion of demand response resources. Benefits include significant reductions in CO2 emissions, up to 75% reductions at 30% wind penetration, as compared to emissions with no wind integration.
文摘风电等可再生能源高比例并网,是“双碳”目标下电力系统绿色低碳化转型的必经之路,但这也对电网安全运行带来了巨大的压力。因此,文中提出了一种基于博弈论的含碳捕集综合能源系统(Integrated Energy System, IES)优化调度策略。首先,构建了促进风电消纳的综合能源系统内碳循环优化模型;然后,构建了含Stackelberg博弈的双层博弈调度模型,并证明该模型纳什均衡;最后,利用改进的差分进化算法求解双层博弈模型,以满足调度模型收敛速度需求。
文摘“双碳”目标背景下,为解决热电联产机组“以热定电”模式导致的大规模弃风问题,本文提出基于先进绝热压缩空气储能电站(advanced adiabatic compressed air energy storage,AA-CAES)和综合需求响应的综合能源系统(integrated energy system,IES)供暖期弃风消纳策略。首先,在“源-储”两侧建立热电联产机组与AA-CAES电站耦合运行模型,分析耦合运行实现热电解耦机理;其次,在“荷”侧引入价格型和替代型需求响应机制来探寻负荷侧优化系统调度潜力;然后,在IES中引入碳捕集系统和阶梯型碳交易机制来约束碳排放,并在碳排放量最少、综合成本最低为目标构建IES运行基础上,引入模糊机会规划约束模型来分析风、光不确定性对系统调度影响;最后,利用西北某地区实际数据进行算例验证。结果表明:热电机组与AA-CAES电站耦合运行相较于未耦合运行可提高风电消纳率84.55%、降低总成本11.42%、减少碳排放20.28%;综合需求响应机制的引入可进一步提高风电消纳率35.00%、降低总成本20.93%、减少碳排放24.43%;风光不确定性的上升会提高与外部电网的交互成本。
文摘针对区域综合能源系统(regional integrated e ner gy system,RIES)源荷主体互动少、碳排放强度高、风光消纳能力低以及整体运行效益差等问题,文中提出计及电-气-热价格需求响应的RIES经济低碳运行优化方法。利用电能、天然气、热能共有的商品属性以及多元柔性负荷的可调度价值,建立电-气-热价格需求响应模型,有效增强了价格信号对负荷参与需求响应的激励效应;为充分挖掘系统的低碳潜力,引入阶梯型碳交易,完善实际碳排放模型;以系统运行成本最小为优化目标,研究不同运行方式对系统经济性和低碳性的影响。案例分析结果表明,所构建的运行优化模型采用价格需求响应和阶梯型碳交易协同优化方式,在实现负荷削峰填谷的同时可以兼顾系统运行的经济低碳性与风光消纳能力。
