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
The objective of this paper is to assess an economic dispatch considering a power system portfolio, which includes predominant amount of hydro power and increasing quantities of intermittent renewables in relation to ...The objective of this paper is to assess an economic dispatch considering a power system portfolio, which includes predominant amount of hydro power and increasing quantities of intermittent renewables in relation to the total electric capacity. With growing importance of intermittent wind and solar generation taking part into power systems worldwide, there is need for greater chronological resolution to estimate the flexibility of the power system to offer firm capacity. In this way, a linear optimization model operating hourly is developed to calculate the minimum power system cost, while stablishing the capacity allocation to meet the projected load throughout one-year simulation, as an estimation of how the hourly economic dispatch impacts the scheduling of generators belonging to a power system with this portfolio composition. A central focus is how to operate the available hydro capacity to back up intermittent renewables, evaluating the physical hydro operating constraints, monthly energy balance and maximum power availability. A case study was simulated based on the Brazil’s power system configuration, showing that existing hydro capacity provide hourly flexibility to back-up intermittent renewables, potentially saving 1.2 Billion R$, about 3.6% of total system cost referred to 2019. It is worthwhile to realize that the developed methodology can be employed to other power systems with similar capacity portfolio structure for the purpose of calculating its optimum allocation for a specified region and target year.展开更多
文摘文章探讨(Uninterrupted Power Supply,UPS)系统在电力调度中的应用,着重分析其在提供不间断电力保障、提升调度系统的可靠性等方面的作用。UPS系统作为备用电源,在电力故障发生时能够迅速切换并保障系统持续运行,从而提升电力调度系统的可靠性和稳定性。通过合理的容量规划和冗余配置、严格的安装调试和运行维护,UPS系统能够为电力调度提供可靠的电力支持,保障电力系统的安全运行和高效管理。
文摘The objective of this paper is to assess an economic dispatch considering a power system portfolio, which includes predominant amount of hydro power and increasing quantities of intermittent renewables in relation to the total electric capacity. With growing importance of intermittent wind and solar generation taking part into power systems worldwide, there is need for greater chronological resolution to estimate the flexibility of the power system to offer firm capacity. In this way, a linear optimization model operating hourly is developed to calculate the minimum power system cost, while stablishing the capacity allocation to meet the projected load throughout one-year simulation, as an estimation of how the hourly economic dispatch impacts the scheduling of generators belonging to a power system with this portfolio composition. A central focus is how to operate the available hydro capacity to back up intermittent renewables, evaluating the physical hydro operating constraints, monthly energy balance and maximum power availability. A case study was simulated based on the Brazil’s power system configuration, showing that existing hydro capacity provide hourly flexibility to back-up intermittent renewables, potentially saving 1.2 Billion R$, about 3.6% of total system cost referred to 2019. It is worthwhile to realize that the developed methodology can be employed to other power systems with similar capacity portfolio structure for the purpose of calculating its optimum allocation for a specified region and target year.