确定非线性负荷的谐波电流限值是谐波评估进而谐波治理的基础工作,这样如何设计适当的计算方法就至关重要。基于谐波国家标准GB/T 14549-93和IEC国际标准IEC 61000-3-6,首先给出了描述公共连接点(Point of Common Coupling,PCC)的供电...确定非线性负荷的谐波电流限值是谐波评估进而谐波治理的基础工作,这样如何设计适当的计算方法就至关重要。基于谐波国家标准GB/T 14549-93和IEC国际标准IEC 61000-3-6,首先给出了描述公共连接点(Point of Common Coupling,PCC)的供电设备容量与用户用电协议容量之间关系的方程式。之后,借鉴在IEC标准中所采用的考虑负荷同时系数的方法,提出了在谐波国标中考虑负荷同时系数的思路和谐波电流限值计算新方法。通过GB/T 14549-93和IEC 61000-3-6这两个标准的相互佐证,并以某电力系统的实测数据为例,说明了所提方法的合理性。展开更多
For the carbon-neutral,a multi-carrier renewable energy system(MRES),driven by the wind,solar and geothermal,was considered as an effective solution to mitigate CO2emissions and reduce energy usage in the building sec...For the carbon-neutral,a multi-carrier renewable energy system(MRES),driven by the wind,solar and geothermal,was considered as an effective solution to mitigate CO2emissions and reduce energy usage in the building sector.A proper sizing method was essential for achieving the desired 100%renewable energy system of resources.This paper presented a bi-objective optimization formulation for sizing the MRES using a constrained genetic algorithm(GA)coupled with the loss of power supply probability(LPSP)method to achieve the minimal cost of the system and the reliability of the system to the load real time requirement.An optimization App has been developed in MATLAB environment to offer a user-friendly interface and output the optimized design parameters when given the load demand.A case study of a swimming pool building was used to demonstrate the process of the proposed design method.Compared to the conventional distributed energy system,the MRES is feasible with a lower annual total cost(ATC).Additionally,the ATC decreases as the power supply reliability of the renewable system decreases.There is a decrease of 24%of the annual total cost when the power supply probability is equal to 8%compared to the baseline case with 0%power supply probability.展开更多
文摘确定非线性负荷的谐波电流限值是谐波评估进而谐波治理的基础工作,这样如何设计适当的计算方法就至关重要。基于谐波国家标准GB/T 14549-93和IEC国际标准IEC 61000-3-6,首先给出了描述公共连接点(Point of Common Coupling,PCC)的供电设备容量与用户用电协议容量之间关系的方程式。之后,借鉴在IEC标准中所采用的考虑负荷同时系数的方法,提出了在谐波国标中考虑负荷同时系数的思路和谐波电流限值计算新方法。通过GB/T 14549-93和IEC 61000-3-6这两个标准的相互佐证,并以某电力系统的实测数据为例,说明了所提方法的合理性。
基金Project(52108101)supported by the National Natural Science Foundation of ChinaProjects(2020GK4057,2021JJ40759)supported by the Hunan Provincial Science and Technology Department,China。
文摘For the carbon-neutral,a multi-carrier renewable energy system(MRES),driven by the wind,solar and geothermal,was considered as an effective solution to mitigate CO2emissions and reduce energy usage in the building sector.A proper sizing method was essential for achieving the desired 100%renewable energy system of resources.This paper presented a bi-objective optimization formulation for sizing the MRES using a constrained genetic algorithm(GA)coupled with the loss of power supply probability(LPSP)method to achieve the minimal cost of the system and the reliability of the system to the load real time requirement.An optimization App has been developed in MATLAB environment to offer a user-friendly interface and output the optimized design parameters when given the load demand.A case study of a swimming pool building was used to demonstrate the process of the proposed design method.Compared to the conventional distributed energy system,the MRES is feasible with a lower annual total cost(ATC).Additionally,the ATC decreases as the power supply reliability of the renewable system decreases.There is a decrease of 24%of the annual total cost when the power supply probability is equal to 8%compared to the baseline case with 0%power supply probability.
