共查询到18条相似文献,搜索用时 187 毫秒
1.
针对高比例可再生能源并网,提出含风、光、火、蓄的高比例新能源电力系统多目标日前优化调度模型。该模型考虑在火电机组深度调峰及频繁爬坡等新工况下的火电机组运行成本、污染物惩罚成本以及可再生能源弃电成本,以系统运行成本最低、风光出力最大以及净负荷波动最小为优化目标,采用NSGA-Ⅱ算法进行优化求解。通过对某典型日不同调度场景进行仿真计算,结果表明所建立的系统运行总成本计算模型能够兼顾该系统的经济、环保与消纳,所提出的多目标优化调度策略能够促进高比例可再生能源的消纳,缓解火电机组的调峰压力,降低系统运行总成本,指导电力系统火电灵活性改造,保证电力系统安全、稳定、经济运行。 相似文献
2.
3.
4.
由于间歇性能源出力具有不确定性,该文利用抽水蓄能容量大、响应速度快的优势,建立风-光-火-蓄两阶段动态调度模型。长时间尺度以总成本最低为目标,综合考量系统运行成本、SO2、NOX、PM排放量、弃风弃光量惩罚,来优化可控电源出力。短时间尺度以长时间尺度为基准,基于模型预测控制原理滚动求解出力增量,使抽蓄机组有功出力偏差最小,以增强调度的平滑性。最后根据东北某地区抽蓄机组实际数据及改进的IEEE-30节点系统仿真验证了该文所提模型的有效性,以此来降低系统的污染物排放水平,提升系统对风电、光伏的消纳能力。 相似文献
5.
6.
7.
8.
9.
短期风水火电联合系统经济调度对于减少化石燃料消耗、提高清洁能源利用效率具有重要意义,然而风电的随机不确定性、水电的多级耦合性及火电的出力非线性等给电力系统经济调度带来新的挑战。对此,综合考虑风电不确定性的风险和效益,从风险规避的角度构建了基于条件期望价值的风险规避调度模型。在此基础上,考虑调度模型多模态、非线性、复杂约束的特性,利用进化捕食策略对该模型进行求解。算例仿真表明,所提模型能够从风险与效益两个维度可靠地度量短期风水火电联合系统调度,获得最优调度方案,以保证系统运行的可靠性、经济性,以及系统消纳可再生能源的能力。 相似文献
10.
为了提高可再生能源的消纳水平、降低碳排放量、提高配电网的运行经济性,文章提出了一种考虑碳排效益的含可再生能源柔性配电网自适应两阶段鲁棒优化运行策略。首先,结合绿证-阶梯碳交易机制,考虑配电网运行成本与绿色能源交易成本,并基于风光出力的不确定性,建立了考虑最恶劣场景下的两阶段鲁棒优化运行模型,在此基础上,结合线性化手段将非线性模型转化成混合整数二阶锥规划;其次,利用自适应不确定算子合理调节系统的鲁棒性,采用高效的列与约束生成(Column and Constraint Generation, C&CG)算法进行求解;最后,在IEEE-33节点系统中进行算例分析。结果表明,所提策略不仅可以有效提高柔性配电网系统应对不确定性的能力,而且在实现系统经济性的同时兼顾了环保性,有助于柔性配电网多维协调发展。 相似文献
11.
12.
《International Journal of Hydrogen Energy》2023,48(77):30085-30101
Increased air pollution and global temperature as well as motor vehicle fuel consumption have depleted fossil fuel resources and increased environmental problems caused by the consumption of such fuels. In addition to methods such as combined heat and power (CHP) technology and distributed generation (DG) of energy at the consumption site, renewable energy sources and EVs are considered suitable methods for achieving this goal, which is prepared by the grid or battery electric energy. Generation uncertainty due to the lack of solar radiation and constant wind blow at different hours of the day is the only challenge for using renewable energies. Moreover, system reliability is a concept that refers to the safe and reliable operation of the system. In general, the wider and more important the system, the more attention that is paid to calculating its reliability in planning and decision making. This study aims to examine the problem of probabilistic power system planning by calculating the power system reliability, evaluating the effect of the presence of these vehicles on security and economic indicators and renewable energy sources, and modeling uncertainties using a Least Squares Generative Adversarial Network (LSGANs) method with generating various scenarios for solar irradiance and wind speed. Furthermore, the Kantorovich distance matrix (KDM) is used to reduce the number of generated scenarios. In the proposed model, the conditional value-at-risk (CVaR) method is implemented to assess and control the risk caused by uncertainties of the proposed problem. Using the power stored in the EV battery is evaluated to cover wind and solar energy source uncertainties. 相似文献
13.
14.
15.
16.
17.
18.