CN116418016A - 一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统 - Google Patents
一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统 Download PDFInfo
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Abstract
本发明涉及一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统,包括光伏电池组件、潜水泵、蓄水池、水井、水轮发电机组、逆变器、恒压器、一号引水管道、二号引水管道,光伏电池组件安装在温室顶部,蓄水池中安装有电磁阀;光伏电池组件与水泵连接;水泵的进水口与水井连接;水泵的出水口与蓄水池通过一号引水管道连通;蓄水池通过二号引水管道与水轮机连接;发电机输入轴与水轮机输出轴传动连接;本发明提出的抽水蓄能光伏发电系统,在辐照度有起伏的情况下,将相对稳定的辐照度转化为电能用于给电力系统发电,将相对波动的辐照度转化为水的势能存储,在夜晚或阴雨天气时再将势能转化为电能供给电力系统;充分利用了太阳能资源,一定程度缓解发电与生产、生活用水矛盾。
Description
技术领域
本发明涉及可再生能源利用与水力发电领域,特别涉及一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统。
背景技术
随着快速发展的人口和社会经济,能源需求增长压力大,能源供应与经济发展的矛盾十分突出,在现有能源日趋紧张的情况下,为了缓解这种紧张,人们开始将目光投向了太阳能、风能、潮汐能等可再生能源,可再生能源的好处在于从根本上解决我国能源问题的同时,还能减小环境污染、保护生态,而太阳能相较于其他可再生能源在近几年的发展更为成熟。
太阳能本身具有间歇性、随机性、波动性等特点,无法控制的天气变化、温度的升降及云层遮挡等不可控因素,导致光伏发电和输出功率波动很大,通过光伏发电系统直流汇流和母线侧设计安装恒压器,可以通过控制充放电功率平抑光伏的波动,对光伏发电功率进行可控干预,稳定发电,而对于存在波动性的输出功率则用来驱动潜水泵,抽出的水储存在蓄水池,用于在阴雨天或夜晚辐照度不足时为整个电力系统供电。
抽水蓄能是目前广泛应用的大规模储能技术,主要担任调峰、调频、事故和负荷备用等,具有对电网负荷的变化相应速度较快、存储容量较大、转换效率较高的优点,适用于附近具有湖泊、河流的高海拔的山坡、丘陵等地区,但是过于依赖地势。
利用集雨系统,将雨水在一定范围内代替自来水,能够对水源紧缺具有一定的缓解,也能使得蓄水池在欠水时,保证系统继续运行。
发明内容
本发明提供一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统,将抽水蓄能作为一种平抑光伏出力波动性的手段纳入到调度体系中,由于传统调度方法相比,可以有效的提升系统的经济效益。
本发明的目的是这样实现的:包括山体、温室、光伏电池组件、潜水泵、蓄水池、水井、水轮发电机组、逆变器、恒压器、一号引水管道、二号引水管道、集雨槽、排水管、棚膜、喷淋、水泵及水桶。
温室内部的用电负荷包括:补光灯、温度传感器、光照传感器、湿度传感器、风机、热泵、水泵、喷淋系统。
光伏电池组件安装在温室顶部,蓄水池中安装有电磁阀;光伏电池组件与水泵连接;水泵的进水口与水井连接;水泵的出水口与蓄水池通过第一连接管连通;蓄水池通过第二连接管与水轮机连接;发电机输入轴与水轮机输出轴传动连接。
一号引水管道垂直于地面放置,其进水口与潜水泵的出水口连接,其出水口与蓄水池的进水口连接;二号引水管道垂直于地面放置,其出水口与蓄水池底部出水口连通。
集雨系统方面,集雨槽置于棚膜斜下方;集雨槽与排水管的进水口连接,其出水口与温室内的水桶连接,水泵置于水桶内与喷淋连接。
本发明的集雨系统,水泵用于在阴雨天气时将集雨槽与排水管中的雨水提至水桶,而阴雨天气本身湿度较大,无需另外给温室加湿;非阴雨天气时,水泵则提水至喷淋系统用于日常给温室加湿。
光伏电池组件安装在温室顶部有以下优势。
温室种植厌光性植物,光伏电池组件安装于温室顶部可对光照进行遮挡;相对于将光伏电池组件置于对面,安装于屋顶可有效节省地面空间;光伏电池组件安装于温室顶部,可最大程度利用太阳能资源,减少高处障碍物的遮挡。
本发明的有益效果:由于太阳能的波动性及不稳定性,通过在光伏系统中接入动态响应好、可靠性高的储能装置接入电网,配合系统负载预测和光伏出力预测,对光伏发电功率进行可控干预,实现系统稳定平滑的输出,波动的发电功率用于驱动潜水泵,潜水泵将水提至蓄水池进行存储,在无辐照度的天气下再将水的势能转化为电能供给电力系统,实现对电力系统进行平稳不间断的供电。
对于上述的集雨系统还能提出如下改进。
进一步,将蓄水池顶部的盖子去除,也能收集到一部分雨水,可以在水资源紧缺时将雨水在一定范围内代替自来水,能够对水源紧缺具有一定的缓解,也能使得蓄水池在欠水时,保证系统继续运行。
附图说明
图1为本发明一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统山体图。
图2为本发明一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统结构示意图。
图3为本发明一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统逆变器、恒压器示意图。
图4为本发明一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统集雨系统结构示意图。
图5为本发明一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统的系统流程图(辐照度有波动时)。
图6为本发明一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统的系统流程图(辐照度无波动时)。
附图中,各标号所代表的部件列表如下。
1、温室,2、光伏电池组件,3、潜水泵,水井,4、蓄水池,5、水轮机,6、发电机,7、一号引水管道,8、二号引水管道,9、恒压器,10、逆变器,11、棚膜,12、集雨槽,13、排水管,14、水井,15、支架,16、山体,17、喷淋,18、水泵,19、水桶。
具体实施方式
下面结合附图对本发明作进一步说明和对其特征进行描述。
如图1所示,一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统,包括温室、光伏电池组件、潜水泵、水井、蓄水池、水轮发电机组、一号引水管道、二号引水管道、逆变器及恒压器。
光伏电池组件以一定倾斜角度放置于温室顶部,温室与蓄水池处于同一高度且相邻,其中蓄水池有一个进水口和两个出水口,进水口位于蓄水池顶部,两个出水口分别位于蓄水池底部以及底部侧面,其进水口与潜水泵出水口连通,其底部出水口与水轮机连接,其底部侧面出水口与温室连通。
一号引水管道垂直于地面放置,其进水口与潜水泵的出水口连接,其出水口与蓄水池的进水口连通;二号引水管道垂直于地面放置,其出水口与蓄水池底部出水口连通。
如图3所示,恒压器安装于光伏电池组件的进线端;逆变器与恒压器相邻安装。
如图4所示,一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统的集雨系统,包括棚膜、集雨槽、排水管、水泵、水桶、喷淋。
集雨槽置于棚膜斜下方,集雨槽与排水管的进水口连接,其出水口与温室内的水桶连接,水泵置于水桶内与喷淋连接。
一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统工作原理。
当有光照时,一次能源由光伏电池组件提供,将光能转化为电能,通过光伏发电系统直流汇流和母线侧设计安装恒压器,可以通过控制充放电功率平抑光伏的波动,将电平稳的、不间断的供给温室内的电力系统,剩余的光伏功率具有波动、不稳定的特点,用以驱动水泵,水泵将水井中的水通过一号引水管道提至蓄水池并储存,当没有光照时,由于重力作用,蓄水池中的水通过二号引水管道流入水轮发电机组的水轮机中,落到水轮机叶轮的叶片上,水轮机的叶轮将水的动能转化为旋转机械能,并传递给与之配套的发电机,发电机开始提供电力并供给温室的电力系统,以代替有辐照度时的光伏发电,使温室的电力系统能够不间断的运行。
当有辐照时,判断辐照度是否大于800W/m²,如果大于800W/m²,向温室电力系统供电的同时启动潜水泵,潜水泵将水井中的水提至蓄水池储存,如果小于800W/m²,则仅向温室电力系统供电,当没有辐照度时,蓄水池的水下落至水轮发电机组并向温室电力系统供电。
在前一天根据第二天的辐照强度及波动性进行日前规划,来确定应启用哪一种模式。
如图5所示,其工作模式为辐照度有波动的情况下,以辐照度大于800W/m²为阈值,当辐照度大于800W/m²时,光伏电池组件向温室供电的同时启动水泵,并将水提至蓄水池内存储;当辐照度小于800W/m²时,应先检测当前辐照度是否满足电力系统所需的最低要求即辐照度是否小于600W/㎡,若辐照度大于600W/㎡则向温室供电;若辐照度小于600W/㎡,则进行延时检测辐照强度是否满足电力系统运行,计数器设定为5次,检测间隔时长2分钟,总检测时长为10分钟,若检测5次后辐照度仍然小于600W/㎡,蓄水池的水下落至水轮发电机组,将水的重力势能最终转化为电能向温室供电。
如图6所示,其工作模式为辐照度相对稳定无波动的情况下,主要包括晴天,多云即夜晚无辐照的的情况,首先检测是否有辐照度,若有辐照度,则检测辐照度是否大于800W/m²,若辐照度大于800W/m²,则光伏电池组件向温室供电的同时启动水泵,并将水提至蓄水池内存储;若辐照度小于800W/m²,则检测当前辐照度能否满足电力系统运行所需的最低要求即辐照度是否大于600W/m²,若辐照度大于600W/m²,则向温室供电;若辐照度小于600W/m²,蓄水池的水下落至水轮发电机组,将水的重力势能最终转化为电能向温室供电;若无辐照度,则重复当辐照度不能满足系统运行最低要求的步骤。
Claims (4)
1.一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统,其特征在于,包括山体(16)、温室(1)、光伏电池组件(2)、潜水泵(3)、蓄水池(4)、水井(14)、水轮机(5)、发电机(6)、一号引水管道(7)、二号引水管道(8)、逆变器(10)、恒压器(9),集雨槽(12)、排水管(13)、棚膜(11)、支架(15)、喷淋(17)、水泵(18)、水桶(19);
所述所示光伏电池组件(2)安装在所述温室(1)的顶部,所述潜水泵(3)与所述光伏电池组件(2)连接,所述潜水泵(3)的进水口连接所述水井(14);所述蓄水池(4)顶部为进水口,底部和底部侧边为出水口,底部侧边与所述温室(1)连通;所述水轮机(5)与所述发电机(6)与所述蓄水池(4)连接,所述发电机(6)输入轴与所述水轮机(5)输出轴传动连接。
2.所述一号引水管道(7)垂直于地面放置,其进水口与所述潜水泵(3)的出水口连接,其出水口与所述蓄水池(4)的进水口连接;所述二号引水管道(8)垂直于地面放置,其出水口与所述蓄水池(4)底部出水口连通。
3.根据权利要求1所述的一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统,其特征在于,所述光伏电池组件(2)包括支架(15),光伏板,所述支架是固定在所述温室(1)顶部;所述光伏(2)以一定倾角固定在所述支架(15)上;
根据权利要求1所述的一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统,其特征在于,所述恒压器(9)安装于所述光伏电池组件(2)的进线端;所述逆变器(10)与所述恒压器(9)相邻安装。
4.根据权利要求1所述的一种抽水蓄能耦合水力发电平抑光伏波动的山间温室系统,其特征在于,所述集雨槽(12)相邻温室于所述棚膜(11)下方安置;所述排水管(13)置于所述温室(1)下方其进水口与所述集雨槽(12)连接,所述排水管(13)出水口与所述水桶(19)底部侧面连接,所述水泵(18)与所述喷淋(17)连接。
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