范旭光 杨梦 梁晓乐 马平 赵淑晓


摘要:近年来新能源的发展建设形势较好,各类不同形式的新能源的并网容量也在不断增加,渗透性不断提高,对传统的电力系统产生了较大的冲击。其中光伏电站由于建设地点较为灵活,目前已经广泛接入电力系统,但地区电网对光伏的消纳能力有限,需要对电网的消纳能力进行评估,以保证电网运行的安全性和稳定性,本文针对此进行了研究,同时还介绍了提升光伏消纳能力的具体策略。
关键词:地区电网光伏电站功率反送消纳能力
Evaluation of Photovoltaic Absorption Capacity of Regional Power Grid and Analysis of Its Promotion Strategy
FAN XuguangYANG MengLIANG XiaoleMA Ping ZHAO Shuxiao
(State Grid Henan Power Company, Baofeng County Power Supply Company, Baofeng, Henan Province, 467400 China)
Abstract: In recent years, the new energy development situation is good, the grid capacity is also increasing, the traditional power system had a greater impact. Among them, photovoltaic power stations have been widely connected to the power system due to their flexible construction sites, but the absorptive capacity of the Regional Power Grid is limited, and the absorptive capacity of the power grid needs to be evaluated, in order to ensure the security and stability of power grid operation, this paper also introduces specific strategies to enhance the capacity of photovoltaic absorption.
Key Words: Regional Power Grid; Photovoltaic Power Station; Power Back Transmission;Absorptive capacity
在新型电力系统中,其典型的形态特征是以新能源发电为主体,其中光伏是一种技术较为成熟的绿色低碳能源,发展及建设前景较好,在电网中所接入的分布式及集中式光伏容量也逐年增加,有的变电站已经出现了较为明显的功率向更高电压等级反送的情况,不利于地区电网的经济运行和能源的高效利用。为此本文详细分析了地区电网对光伏的消纳能力。本文首先分析了光伏电站的出力特性,之后阐述了电网对光伏的消纳能力评估等内容,最后介绍了提高地区电网对光伏消纳能力的具体措施。
1 光伏电站的出力特性分析
光伏电站的建设场景较为丰富,包括屋顶光伏、山区光伏等。由于光伏的出力大小和光伏电池板上所接收到的太阳光照强度相关,在白天光照情况较好时,其出力较大。在夜间时段,分布式光伏电站的出力为零。其典型的出力特性曲线如下图1所示。……