区域太阳能供热集热场输配流量与光伏同频控制策略研究
CO-FREQUENCY CONTROL STRATEGY OF TRANSMISSION AND DISTRIBUTION FLOW OF SOLAR COLLEECTOR FIELD AND PHOTOVOLTAIC IN DISTRICT SOLAR HEATING SYSTEM
张睿超 1王登甲 2焦青太 3万航 4刘轩5
作者信息
- 1. 西安建筑科技大学建筑设备科学与工程学院,西安 710055;香港城市大学建筑与土木工程学院,香港 999077
- 2. 西安建筑科技大学建筑设备科学与工程学院,西安 710055
- 3. 日出东方控股股份有限公司,连云港 222000
- 4. 香港城市大学建筑与土木工程学院,香港 999077
- 5. 中国电建集团西北勘测设计研究院有限公司,西安 710055
- 折叠
摘要
探讨性提出一种基于光伏发电功率响应太阳辐照度变化,以光伏系统实时发电功率为基准驱动太阳能集热场水泵运行,进而控制输配流量和有效集热功率的控制策略.对所提出的集热场流量控制策略的节能运行效果进行计算分析,并与传统定流量控制和定出口温度控制方法进行对比.结果表明,所提控制方式具有最佳的经济与热力性能,其集热场单位产热量成本ηUHC为0.0405 元/kWh,而定流量控制与定出口温度控制方式的ηUHC分别为0.0455 元/kWh与0.0446 元/kWh;其供暖季热效率可达52.44%,高于定流量控制方式的52.43%与定出口温度控制方式的48.78%.
Abstract
This paper proposes a new control strategy based on photovoltaic power generation response to solar irradiance changes,and taking the real-time power generation of the photovoltaic system as the standard to drives the operation of the water pump in the SCF,then controlling the transmission and distribution flow and effective heat collection.The energy-saving operation effect of the proposed SCF flow control strategy is obtained through the calculation and analysis,and compared with the traditional constant flow control and constant outlet temperature control method.The results show that the proposed flow control strategy of the solar collector field has the best economic and thermal performance.Under the proposed control method,the unit heat cost(ηUHC)of the solar collector field can reach 0.0405 ¥/kWh,and the constant flow and constant outlet temperature control methods are 0.0455 ¥/kWh and 0.0446 ¥/kWh respectively.In addition,the thermal efficiency in the heating season can reach 52.44%,which is higher than 52.43% of the constant flow control method and 48.78% of the constant collector outlet temperature control method.
关键词
太阳能集热器/流量控制/光伏系统/经济性能/热力性能Key words
solar collectors/flow control/photovoltaic system/economic performance/thermal performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据