发展微电网是合理利用可再生能源的重要途径,储能系统在协调微电网中多类型能源并实现高效的协同优化过程中发挥了重要的作用。本文构建了同时考虑分布式储能系统(distributed energy storage systems,DESSs)和集中式储能系统(centraliz...发展微电网是合理利用可再生能源的重要途径,储能系统在协调微电网中多类型能源并实现高效的协同优化过程中发挥了重要的作用。本文构建了同时考虑分布式储能系统(distributed energy storage systems,DESSs)和集中式储能系统(centralized energy storage system,CESS)的微电网负荷优化调度模型,该模型同时考虑了微电网的经济成本和稳定性,旨在降低微电网经济成本的同时增加微电网的稳定性。同时,提出的调度模型考虑了需求响应的影响。实验表明,与只有单一DESSs的微电网相比,同时含有DESSs和CESS的微电网可以进一步地降低微电网的经济成本,并提高微电网的稳定性。而微电网通过参与需求响应能够实现更低的经济成本和更高的稳定性。此外,研究发现经济成本和稳定性权重因子对微电网调度的影响,权重因子的选取是微电网经济性和稳定性之间的权衡,提出了兼顾微电网经济性与稳定性的最优解的求解方法。本文的研究对于具有DESSs和CESS的微电网的经济稳定运行具有重要的现实意义。展开更多
ELD (economic load dispatch) problem is one of the essential issues in power system operation. The objective of solving ELD problem is to allocate the generation output of the committed generating units. The main co...ELD (economic load dispatch) problem is one of the essential issues in power system operation. The objective of solving ELD problem is to allocate the generation output of the committed generating units. The main contribution of this work is to solve the ELD problem concerned with daily load pattern. The proposed solution technique, developed based PSO (particle swarm optimization) algorithm, is applied to search for the optimal schedule of all generations units that can supply the required load demand at minimum fuel cost while satisfying all unit and system operational constraints. The performance of the developed methodology is demonstrated by case studies in test system of six-generation units. The results obtained from the PSO are compared to those achieved from other approaches, such as QP (quadratic programming), and GA (genetic algorithm).展开更多
文摘发展微电网是合理利用可再生能源的重要途径,储能系统在协调微电网中多类型能源并实现高效的协同优化过程中发挥了重要的作用。本文构建了同时考虑分布式储能系统(distributed energy storage systems,DESSs)和集中式储能系统(centralized energy storage system,CESS)的微电网负荷优化调度模型,该模型同时考虑了微电网的经济成本和稳定性,旨在降低微电网经济成本的同时增加微电网的稳定性。同时,提出的调度模型考虑了需求响应的影响。实验表明,与只有单一DESSs的微电网相比,同时含有DESSs和CESS的微电网可以进一步地降低微电网的经济成本,并提高微电网的稳定性。而微电网通过参与需求响应能够实现更低的经济成本和更高的稳定性。此外,研究发现经济成本和稳定性权重因子对微电网调度的影响,权重因子的选取是微电网经济性和稳定性之间的权衡,提出了兼顾微电网经济性与稳定性的最优解的求解方法。本文的研究对于具有DESSs和CESS的微电网的经济稳定运行具有重要的现实意义。
文摘ELD (economic load dispatch) problem is one of the essential issues in power system operation. The objective of solving ELD problem is to allocate the generation output of the committed generating units. The main contribution of this work is to solve the ELD problem concerned with daily load pattern. The proposed solution technique, developed based PSO (particle swarm optimization) algorithm, is applied to search for the optimal schedule of all generations units that can supply the required load demand at minimum fuel cost while satisfying all unit and system operational constraints. The performance of the developed methodology is demonstrated by case studies in test system of six-generation units. The results obtained from the PSO are compared to those achieved from other approaches, such as QP (quadratic programming), and GA (genetic algorithm).