In the event of a major power outage,critical park microgrids(PMGs)could be self-sustaining if mobile emergency generators(MEGs)are stationed to share energy.However,the need for privacy protection and the value of fl...In the event of a major power outage,critical park microgrids(PMGs)could be self-sustaining if mobile emergency generators(MEGs)are stationed to share energy.However,the need for privacy protection and the value of flexible power support on minute-time scales have not been given enough attention.To address the problem,this paper proposes a new self-sustaining strategy for critical PMGs integrating MEGs.First,to promote the cooperation between PMG and MEG,a bi-level benefit distribution mechanism is designed,where the participants'multiple roles and contributions are identified,and good behaviors are also awarded.Additionally,to increase the alliance benefits,three loss coordination modes are presented to guide the power exchange at the minute level between the MEG and PMG,considering the volatility of renewable generation and load.On this basis,a multi-time scale power-energy scheduling strategy is formulated via the alternating direction method of multipliers(ADMM)to coordinate the PMG and MEG.Finally,a dimensionality reduction technology is designed to equivalently simplify the optimization problem to facilitate the adaptive-step-based ADMM solution.Simulation studies indicate that the proposed strategy achieves the self-sustaining of PMGs integrating MEGs while increasing the economy by no less than 3.1%.展开更多
Reducing the impact of power outages and maintaining the power supply duration must be considered in implementing emergency energy dispatching in micro-networks.This paper studies a new emergency energy treatment meth...Reducing the impact of power outages and maintaining the power supply duration must be considered in implementing emergency energy dispatching in micro-networks.This paper studies a new emergency energy treatment method based on the robust optimal method and the industrial park micro-network with the optical energy storage system.After controlling the load input,a control strategy of adjusting and removing is proposed.Rolling optimal theory is applied to emergency energy scheduling based on a robust optimal mathematical model.A weighting factor is introduced into the optimal model to balance the importance of reducing and retaining the power supply.Uncertainty is designed to adjust the effect of uncertainty on the problem.The example shows that this method can flexibly set the weight coefficient and uncertainty value according to the actual situation so that the input of the control load can be optimized.展开更多
园区微电网运行在"以热定电"方式下时,微型燃气轮机电能完全跟随热负荷,限制了微型燃气轮机在经济调度中的作用。针对这一问题,提出一种考虑微电网中央控制器(microgrid central controller,MGCC)信息、微电网运行约束、储能...园区微电网运行在"以热定电"方式下时,微型燃气轮机电能完全跟随热负荷,限制了微型燃气轮机在经济调度中的作用。针对这一问题,提出一种考虑微电网中央控制器(microgrid central controller,MGCC)信息、微电网运行约束、储能约束的"源-网-荷-储"4层模型,解耦了微型燃气轮机电热出力的强耦合性,采用改进的粒子群优化(particle swarm optimization,PSO)算法对模型求解,优化微电网内各单元出力。将该模型应用于某微电网实际算例,并与"以热定电"、"电热分供"2种运行方式进行比较,分析结果表明,该优化模型能够实现"源-网-荷-储"协调调度,降低微电网运行成本。展开更多
基金supported by the National Natural Science Foundation of China(52307149,52007103)China Postdoctoral Fund(BX20230326)the State Grid of China(520601230003)。
文摘In the event of a major power outage,critical park microgrids(PMGs)could be self-sustaining if mobile emergency generators(MEGs)are stationed to share energy.However,the need for privacy protection and the value of flexible power support on minute-time scales have not been given enough attention.To address the problem,this paper proposes a new self-sustaining strategy for critical PMGs integrating MEGs.First,to promote the cooperation between PMG and MEG,a bi-level benefit distribution mechanism is designed,where the participants'multiple roles and contributions are identified,and good behaviors are also awarded.Additionally,to increase the alliance benefits,three loss coordination modes are presented to guide the power exchange at the minute level between the MEG and PMG,considering the volatility of renewable generation and load.On this basis,a multi-time scale power-energy scheduling strategy is formulated via the alternating direction method of multipliers(ADMM)to coordinate the PMG and MEG.Finally,a dimensionality reduction technology is designed to equivalently simplify the optimization problem to facilitate the adaptive-step-based ADMM solution.Simulation studies indicate that the proposed strategy achieves the self-sustaining of PMGs integrating MEGs while increasing the economy by no less than 3.1%.
文摘Reducing the impact of power outages and maintaining the power supply duration must be considered in implementing emergency energy dispatching in micro-networks.This paper studies a new emergency energy treatment method based on the robust optimal method and the industrial park micro-network with the optical energy storage system.After controlling the load input,a control strategy of adjusting and removing is proposed.Rolling optimal theory is applied to emergency energy scheduling based on a robust optimal mathematical model.A weighting factor is introduced into the optimal model to balance the importance of reducing and retaining the power supply.Uncertainty is designed to adjust the effect of uncertainty on the problem.The example shows that this method can flexibly set the weight coefficient and uncertainty value according to the actual situation so that the input of the control load can be optimized.
文摘园区微电网运行在"以热定电"方式下时,微型燃气轮机电能完全跟随热负荷,限制了微型燃气轮机在经济调度中的作用。针对这一问题,提出一种考虑微电网中央控制器(microgrid central controller,MGCC)信息、微电网运行约束、储能约束的"源-网-荷-储"4层模型,解耦了微型燃气轮机电热出力的强耦合性,采用改进的粒子群优化(particle swarm optimization,PSO)算法对模型求解,优化微电网内各单元出力。将该模型应用于某微电网实际算例,并与"以热定电"、"电热分供"2种运行方式进行比较,分析结果表明,该优化模型能够实现"源-网-荷-储"协调调度,降低微电网运行成本。
