Taking the consumption rate of renewable energy and the operation cost of hybrid AC/DC microgrid as the optimization objectives,the adjustment of load demand curves is carried out considering the demand side response(...Taking the consumption rate of renewable energy and the operation cost of hybrid AC/DC microgrid as the optimization objectives,the adjustment of load demand curves is carried out considering the demand side response(DSR)on the load side.The complementary utilization of renewable energy between AC area and DC area is achieved to meet the load demand on the source side.In the network side,the hybrid AC/DC microgrids purchase electricity from the power grid at the time-of-use(TOU)price and sell the surplus power of renewable energy to the power grid for profits.The improved memetic algorithm(IMA)is introduced and applied to solve the established mathematical model.The promotion effect of the proposed source-network-load coordination strategies on the optimal operation of hybrid AC/DC microgrid is verified.展开更多
在配电网中引入太阳能和风能等新能源是推动能源供给体系清洁化、低碳化的重要举措。针对新能源消纳不足以及源、荷不确定性导致的调控不精确问题,提供一种多元异构资源协同的配电网多时间尺度调控方法。首先,以单日总运行成本最小为目...在配电网中引入太阳能和风能等新能源是推动能源供给体系清洁化、低碳化的重要举措。针对新能源消纳不足以及源、荷不确定性导致的调控不精确问题,提供一种多元异构资源协同的配电网多时间尺度调控方法。首先,以单日总运行成本最小为目标构建日前优化调控模型,确定有载调压变压器(On-load tap changer,OLTC)、电容器组(Capacitor bank,CB)投切方案,并通过潮流统一的方式将其作为日内运行优化的约束条件;然后,针对新能源短时出力波动与日前源、荷预测误差大等问题,进行日内源、荷不确定性建模;在此基础上,设置日内优化调控模型的目标为与日前总成本偏差最小,确定日内新能源、储能短时动作方案,保证系统经济性最优。算例结果表明,所提方案可实现新能源最大消纳,提升整个系统的低碳经济运行能力。展开更多
基金supported by the National Natural Science Foundation of China(No.51577068)the National High Technology Research and Development Program of China(863 Program)(No.2015AA050104).
文摘Taking the consumption rate of renewable energy and the operation cost of hybrid AC/DC microgrid as the optimization objectives,the adjustment of load demand curves is carried out considering the demand side response(DSR)on the load side.The complementary utilization of renewable energy between AC area and DC area is achieved to meet the load demand on the source side.In the network side,the hybrid AC/DC microgrids purchase electricity from the power grid at the time-of-use(TOU)price and sell the surplus power of renewable energy to the power grid for profits.The improved memetic algorithm(IMA)is introduced and applied to solve the established mathematical model.The promotion effect of the proposed source-network-load coordination strategies on the optimal operation of hybrid AC/DC microgrid is verified.
文摘在配电网中引入太阳能和风能等新能源是推动能源供给体系清洁化、低碳化的重要举措。针对新能源消纳不足以及源、荷不确定性导致的调控不精确问题,提供一种多元异构资源协同的配电网多时间尺度调控方法。首先,以单日总运行成本最小为目标构建日前优化调控模型,确定有载调压变压器(On-load tap changer,OLTC)、电容器组(Capacitor bank,CB)投切方案,并通过潮流统一的方式将其作为日内运行优化的约束条件;然后,针对新能源短时出力波动与日前源、荷预测误差大等问题,进行日内源、荷不确定性建模;在此基础上,设置日内优化调控模型的目标为与日前总成本偏差最小,确定日内新能源、储能短时动作方案,保证系统经济性最优。算例结果表明,所提方案可实现新能源最大消纳,提升整个系统的低碳经济运行能力。