■能源生产正在全球范围内发生根本性转变,用可再生能源取代化石燃料,并引起发电系统的结构变化。
■近年来,用于自我消费的光伏装置急剧增加。它们已经达到了显著的装机容量,导致国家电网的消耗显著减少,这可能会导致严重的管理问题。
■在这项工作中,分析了过去几年西班牙需求的演变,以确定自我消费对整体需求的影响。此外,定义了一个数学模型来估计这种影响。
■已经比较了具有高安装和低安装自消耗光伏系统的年份中等效天数的需求曲线。然后,提出了对该电源产生的电力的估计,考虑到太阳辐射数据的数学模型,安装光伏电源的自耗和其他相关因素。
■对需求的分析表明,当自消耗光伏系统的数量增加时,白天的电力需求显着减少。此外,所提出的模型已经能够提供该来源产生的电力的估计。将这些估计值添加到具有大量自我消耗装置的年份的实际消耗曲线中,可以得出与自我消耗较低时获得的曲线接近的曲线。
■需要实施新的存储系统,并需要改进电网管理,以利用光伏系统产生的盈余。
UNASSIGNED: A radical shift in energy production is underway worldwide, replacing fossil fuels with renewable sources and causing structural changes in power generation systems.
UNASSIGNED: Photovoltaic installations for self-consumption have experienced a steep increase in recent years. They have reached a significant installed capacity to cause a noticeable reduction in consumption from the national grid, which can cause serious management problems.
UNASSIGNED: In this work, the evolution of the Spanish demand in the last years is analyzed to identify the influence of self-consumption in the overall demand. In addition, a mathematical model is defined to estimate this influence.
UNASSIGNED: The demand curves of equivalent days in years with high and low installed self-consumption photovoltaic systems have been compared. Then, an estimation of the electricity generated with this source is proposed, with a mathematical model that takes into account data on solar radiation, installed photovoltaic power for self-consumption and other relevant factors.
UNASSIGNED: The analysis of the demand has shown a significant reduction of the electricity demand in daylight hours when the number of self-consumption photovoltaic systems increases. Moreover, the proposed model has been able to provide an estimation of the electricity generated with this source. The addition of these estimates to the actual consumption curves of years with a high number of self-consumption installations gives profiles close to those obtained when self-consumption was low.
UNASSIGNED: New storage systems need to be implemented and grid management need to be improved to take advantage of the surpluses produced by photovoltaic systems.