This paper analyzes the power markets both in northwest sending end and, east receiving ends, points out the favorable and unfavorable conditions for power development In, the northwest area, brings forward,the develo...This paper analyzes the power markets both in northwest sending end and, east receiving ends, points out the favorable and unfavorable conditions for power development In, the northwest area, brings forward,the development planning of power sources and power network constructions, and presents the benefit estimation of sending power from northwest to east.展开更多
针对我国东南沿海省市电网中外来直流电源与海上风电等不可控电源比例不断提升,对受端电网的电源规划与运行稳定提出重要挑战的问题,提出一种考虑海上风电接入与转动惯量约束的电源规划模型。首先,考虑海上风电历史出力数据的季节特征,...针对我国东南沿海省市电网中外来直流电源与海上风电等不可控电源比例不断提升,对受端电网的电源规划与运行稳定提出重要挑战的问题,提出一种考虑海上风电接入与转动惯量约束的电源规划模型。首先,考虑海上风电历史出力数据的季节特征,运用场景分析法描述海上风电不确定性。其次,以年综合成本最低为目标,构建外层优化规划,内层优化运行的双层电源规划模型,并分析了转动惯量水平与频率响应指标的定量关系,通过在内层模型中施加频率变化率(rate of change of frequency,RoCoF)约束保证规划电源结构的惯性支撑能力。采用遗传算法与Cplex求解器对双层规划模型进行求解。最后,算例仿真结果验证了所提模型的可行性与有效性,并分析归纳了海上风电渗透率与外来直流电源比重大小对电源规划结果的影响。展开更多
文摘This paper analyzes the power markets both in northwest sending end and, east receiving ends, points out the favorable and unfavorable conditions for power development In, the northwest area, brings forward,the development planning of power sources and power network constructions, and presents the benefit estimation of sending power from northwest to east.
文摘针对我国东南沿海省市电网中外来直流电源与海上风电等不可控电源比例不断提升,对受端电网的电源规划与运行稳定提出重要挑战的问题,提出一种考虑海上风电接入与转动惯量约束的电源规划模型。首先,考虑海上风电历史出力数据的季节特征,运用场景分析法描述海上风电不确定性。其次,以年综合成本最低为目标,构建外层优化规划,内层优化运行的双层电源规划模型,并分析了转动惯量水平与频率响应指标的定量关系,通过在内层模型中施加频率变化率(rate of change of frequency,RoCoF)约束保证规划电源结构的惯性支撑能力。采用遗传算法与Cplex求解器对双层规划模型进行求解。最后,算例仿真结果验证了所提模型的可行性与有效性,并分析归纳了海上风电渗透率与外来直流电源比重大小对电源规划结果的影响。