At present,the operation and maintenance of photovoltaic power generation systems mainly comprise regular maintenance,breakdown maintenance,and condition-based maintenance,which is very likely to lead to over-or under...At present,the operation and maintenance of photovoltaic power generation systems mainly comprise regular maintenance,breakdown maintenance,and condition-based maintenance,which is very likely to lead to over-or under-repair of equipment.Therefore,a preventive maintenance and replacement strategy for PV power generation systems based on reliability as a constraint is proposed.First,a hybrid failure function with a decreasing service age factor and an increasing failure rate factor is introduced to describe the deterioration of PV power generation equipment,and the equipment is replaced when its reliability drops to the replacement threshold in the last cycle.Then,based on the reliability as a constraint,the average maintenance cost and availability of the equipment are considered,and the non-periodic incomplete maintenance model of the PV power generation system is established to obtain the optimal number of repairs,each maintenance cycle and the replacement cycle of the PV power generation system components.Next,the inverter of a PV power plant is used as a research object.The model in this paper is compared and analyzed with the equal cycle maintenance model without considering reliability and the maintenance model without considering the equipment replacement threshold,Through model comparison,when the optimal maintenance strategy is(0.80,4),the average maintenance cost of this paper’s model are decreased by 20.3%and 5.54%and the availability is increased by 0.2395% and 0.0337%,respectively,compared with the equal-cycle maintenance model without considering the reliability constraint and the maintenance model without considering the equipment replacement threshold.Therefore,this maintenance model can ensure the high reliability of PV plant operation while increasing the equipment availability to improve the system economy.展开更多
The UPS （uninterruptible power supplies） are essential power infrastructure components of systems designed for critical application, including data centers. High availability achievement is a very important factor r...The UPS （uninterruptible power supplies） are essential power infrastructure components of systems designed for critical application, including data centers. High availability achievement is a very important factor related to UPS performance, consequently to proper critical application functionality. Generally, UPS have a limited input voltage window, referring to the nominal input voltage value. Goal of this paper is to prove larger voltage window, without affecting normal UPS operation. Larger window will result on less commutation, backup and normal mode reduction, and consequently duty time of batteries reduction, too. Thus, under these conditions, it is to be expected availability improvement. The stabilizing node model, applied at UPS＇s control part through this paper is presented. UPS＇s behavior with an implemented stabilizing node is observed at few sites. In order to analyze and conclude about UPS＇s performance under these technical conditions, simulation results are further presented.展开更多
近年来,电力供应系统的供电品质显著提高,广泛满足了用户对电力的需求。但随着技术的发展,对电力供应的可靠性要求也随之提高,尤其是在金融、医疗和证券等关键领域,电力中断可能导致重大的经济损失和安全事故。不间断电源(Uninterrupted...近年来,电力供应系统的供电品质显著提高,广泛满足了用户对电力的需求。但随着技术的发展,对电力供应的可靠性要求也随之提高,尤其是在金融、医疗和证券等关键领域,电力中断可能导致重大的经济损失和安全事故。不间断电源(Uninterrupted Power Supply,UPS)被广泛应用于提高电力系统的供电可靠性。尽管许多研究者对电力系统中UPS的可靠性进行了广泛分析,但对其进行定量评估的研究仍然较少。文章旨在通过研究对UPS供电方案可靠性的定量分析,为选取合适的UPS方案提供科学依据和参考。展开更多
文章探讨(Uninterrupted Power Supply,UPS)系统在电力调度中的应用,着重分析其在提供不间断电力保障、提升调度系统的可靠性等方面的作用。UPS系统作为备用电源,在电力故障发生时能够迅速切换并保障系统持续运行,从而提升电力调度系统...文章探讨(Uninterrupted Power Supply,UPS)系统在电力调度中的应用,着重分析其在提供不间断电力保障、提升调度系统的可靠性等方面的作用。UPS系统作为备用电源,在电力故障发生时能够迅速切换并保障系统持续运行,从而提升电力调度系统的可靠性和稳定性。通过合理的容量规划和冗余配置、严格的安装调试和运行维护,UPS系统能够为电力调度提供可靠的电力支持,保障电力系统的安全运行和高效管理。展开更多
为解决电力系统中不间断电源(Uninterruptible Power Supply,UPS)调度的自动化问题,提出一种基于分布式控制的UPS调度自动化算法。在深入分析电能需求的特性和系统可靠性要求的基础上,设计分布式控制架构,并选择适用于UPS调度的分布式算...为解决电力系统中不间断电源(Uninterruptible Power Supply,UPS)调度的自动化问题,提出一种基于分布式控制的UPS调度自动化算法。在深入分析电能需求的特性和系统可靠性要求的基础上,设计分布式控制架构,并选择适用于UPS调度的分布式算法,主要包括负载预测与动态调整、分布式能量管理和故障容忍性设计,并通过全面的性能评估,验证算法的可靠性和健壮性。所提算法为UPS调度自动化提供一套全面、可靠的解决方案,有望推动电力系统智能化和效率提升。展开更多
文章针对电力自动化系统中不间断电源(Uninterruptible Power Supply,UPS)的配置和应用策略进行深入探讨。通过分析电力自动化系统对供电可靠性和电能质量的要求,阐述UPS在其中发挥的重要作用。在此基础上,详细论述UPS的配置原则和容量...文章针对电力自动化系统中不间断电源(Uninterruptible Power Supply,UPS)的配置和应用策略进行深入探讨。通过分析电力自动化系统对供电可靠性和电能质量的要求,阐述UPS在其中发挥的重要作用。在此基础上,详细论述UPS的配置原则和容量选择方法,并针对UPS的运行管理、维护保养等提出了切实可行的建议。展开更多
随着信息技术的迅猛发展,不间断电源(Uninterruptible Power Supply,UPS)在关键基础设施中起着至关重要的作用,能够确保系统持续、稳定供电。然而,在面对高负载、故障等复杂情况下,传统的UPS调度策略存在效率低、资源利用不足等问题。...随着信息技术的迅猛发展,不间断电源(Uninterruptible Power Supply,UPS)在关键基础设施中起着至关重要的作用,能够确保系统持续、稳定供电。然而,在面对高负载、故障等复杂情况下,传统的UPS调度策略存在效率低、资源利用不足等问题。针对这些挑战,文章提出一种面向高可用性的UPS调度自动化策略优化方案,旨在提高系统的稳定性、灵活性及资源利用率。通过引入智能算法和实时数据分析等技术手段,优化调度策略,提高UPS的整体性能,为关键基础设施的可靠运行提供有力支撑。展开更多
本文通过对传统UPS(Uninterruptible Power Supply,不间断电源)供电模式与HVDC(high-voltage directcurrent,高压直流)模式的对比分析,指出采用HVDC供电可以有效地改善机房供电质量,并以低投资、高可靠性、低运营成本等优势逐步成为运...本文通过对传统UPS(Uninterruptible Power Supply,不间断电源)供电模式与HVDC(high-voltage directcurrent,高压直流)模式的对比分析,指出采用HVDC供电可以有效地改善机房供电质量,并以低投资、高可靠性、低运营成本等优势逐步成为运营商机房一种新的供电模式。展开更多
文章通过对传统UPS(Uninterruptible Power Supply,不间断电源)供电模式与HVDC(high-voltage direct current,高压直流)模式的对比分析,指出采用HVDC供电可以有效地改善机房供电质量,并以低投资、高可靠性、低运营成本等优势逐步成为运...文章通过对传统UPS(Uninterruptible Power Supply,不间断电源)供电模式与HVDC(high-voltage direct current,高压直流)模式的对比分析,指出采用HVDC供电可以有效地改善机房供电质量,并以低投资、高可靠性、低运营成本等优势逐步成为运营商机房一种新的供电模式。展开更多
基金This researchwas supported by the National Natural Science Foundation of China(Nos.51767017 and 51867015)the Basic Research and Innovation Group Project of Gansu(No.18JR3RA133)the Natural Science Foundation of Gansu(No.21JR7RA258).
文摘At present,the operation and maintenance of photovoltaic power generation systems mainly comprise regular maintenance,breakdown maintenance,and condition-based maintenance,which is very likely to lead to over-or under-repair of equipment.Therefore,a preventive maintenance and replacement strategy for PV power generation systems based on reliability as a constraint is proposed.First,a hybrid failure function with a decreasing service age factor and an increasing failure rate factor is introduced to describe the deterioration of PV power generation equipment,and the equipment is replaced when its reliability drops to the replacement threshold in the last cycle.Then,based on the reliability as a constraint,the average maintenance cost and availability of the equipment are considered,and the non-periodic incomplete maintenance model of the PV power generation system is established to obtain the optimal number of repairs,each maintenance cycle and the replacement cycle of the PV power generation system components.Next,the inverter of a PV power plant is used as a research object.The model in this paper is compared and analyzed with the equal cycle maintenance model without considering reliability and the maintenance model without considering the equipment replacement threshold,Through model comparison,when the optimal maintenance strategy is(0.80,4),the average maintenance cost of this paper’s model are decreased by 20.3%and 5.54%and the availability is increased by 0.2395% and 0.0337%,respectively,compared with the equal-cycle maintenance model without considering the reliability constraint and the maintenance model without considering the equipment replacement threshold.Therefore,this maintenance model can ensure the high reliability of PV plant operation while increasing the equipment availability to improve the system economy.
文摘The UPS （uninterruptible power supplies） are essential power infrastructure components of systems designed for critical application, including data centers. High availability achievement is a very important factor related to UPS performance, consequently to proper critical application functionality. Generally, UPS have a limited input voltage window, referring to the nominal input voltage value. Goal of this paper is to prove larger voltage window, without affecting normal UPS operation. Larger window will result on less commutation, backup and normal mode reduction, and consequently duty time of batteries reduction, too. Thus, under these conditions, it is to be expected availability improvement. The stabilizing node model, applied at UPS＇s control part through this paper is presented. UPS＇s behavior with an implemented stabilizing node is observed at few sites. In order to analyze and conclude about UPS＇s performance under these technical conditions, simulation results are further presented.
文摘近年来,电力供应系统的供电品质显著提高,广泛满足了用户对电力的需求。但随着技术的发展,对电力供应的可靠性要求也随之提高,尤其是在金融、医疗和证券等关键领域,电力中断可能导致重大的经济损失和安全事故。不间断电源(Uninterrupted Power Supply,UPS)被广泛应用于提高电力系统的供电可靠性。尽管许多研究者对电力系统中UPS的可靠性进行了广泛分析,但对其进行定量评估的研究仍然较少。文章旨在通过研究对UPS供电方案可靠性的定量分析,为选取合适的UPS方案提供科学依据和参考。
文摘文章探讨(Uninterrupted Power Supply,UPS)系统在电力调度中的应用,着重分析其在提供不间断电力保障、提升调度系统的可靠性等方面的作用。UPS系统作为备用电源,在电力故障发生时能够迅速切换并保障系统持续运行,从而提升电力调度系统的可靠性和稳定性。通过合理的容量规划和冗余配置、严格的安装调试和运行维护,UPS系统能够为电力调度提供可靠的电力支持,保障电力系统的安全运行和高效管理。
文摘为解决电力系统中不间断电源(Uninterruptible Power Supply,UPS)调度的自动化问题,提出一种基于分布式控制的UPS调度自动化算法。在深入分析电能需求的特性和系统可靠性要求的基础上,设计分布式控制架构,并选择适用于UPS调度的分布式算法,主要包括负载预测与动态调整、分布式能量管理和故障容忍性设计,并通过全面的性能评估,验证算法的可靠性和健壮性。所提算法为UPS调度自动化提供一套全面、可靠的解决方案,有望推动电力系统智能化和效率提升。
文摘文章针对电力自动化系统中不间断电源(Uninterruptible Power Supply,UPS)的配置和应用策略进行深入探讨。通过分析电力自动化系统对供电可靠性和电能质量的要求,阐述UPS在其中发挥的重要作用。在此基础上,详细论述UPS的配置原则和容量选择方法,并针对UPS的运行管理、维护保养等提出了切实可行的建议。
文摘随着信息技术的迅猛发展,不间断电源(Uninterruptible Power Supply,UPS)在关键基础设施中起着至关重要的作用,能够确保系统持续、稳定供电。然而,在面对高负载、故障等复杂情况下,传统的UPS调度策略存在效率低、资源利用不足等问题。针对这些挑战,文章提出一种面向高可用性的UPS调度自动化策略优化方案,旨在提高系统的稳定性、灵活性及资源利用率。通过引入智能算法和实时数据分析等技术手段,优化调度策略,提高UPS的整体性能,为关键基础设施的可靠运行提供有力支撑。
文摘本文通过对传统UPS(Uninterruptible Power Supply,不间断电源)供电模式与HVDC(high-voltage directcurrent,高压直流)模式的对比分析,指出采用HVDC供电可以有效地改善机房供电质量,并以低投资、高可靠性、低运营成本等优势逐步成为运营商机房一种新的供电模式。
文摘文章通过对传统UPS(Uninterruptible Power Supply,不间断电源)供电模式与HVDC(high-voltage direct current,高压直流)模式的对比分析,指出采用HVDC供电可以有效地改善机房供电质量,并以低投资、高可靠性、低运营成本等优势逐步成为运营商机房一种新的供电模式。
