摘要
农村户用光伏发展迫在眉睫,太阳能随机波动导致的供需动态匹配问题却是影响农村户用光伏发展的重要障碍。随着农业机械化、电气化的快速发展,蓄电型农机在农村愈发普及,利用闲置期的农机电池协助居住建筑用能调蓄将成为解决供需动态匹配问题的新途径。本研究以关中地区典型农村为例开展调研,选择典型农户计算居住建筑用电负荷并考虑农机电池介入,在安装3 kW户用光伏的假设前提下建立求解以经济性为目标的柔性负荷优化调控模型。结果表明:(1)农机电池资源和柔性负荷资源在可用时间与可调功率上受到季节与农业生产活动的高度影响;(2)在不实行分时电价的情景中,农机电池的有效蓄放可使典型农户的光伏消纳率在夏季农忙、夏季农闲、过渡季农闲、冬季农闲典型日分别提升0.15%、5.99%、3.60%、8.41%;(3)在实行分时电价的情景中,农机电池的有效蓄放可使典型农户的光伏消纳率在夏季农忙、夏季农闲、过渡季农闲、冬季农闲典型日分别提升4.99%、15.56%、16.44%、31.48%;此外,农机电池的有效蓄放还可使典型农户的峰段用电负荷在夏季农忙、夏季农闲、过渡季农闲、冬季农闲典型日分别削减38.44%、41.94%、54.89%、41.54%。(4)农机电池的有效蓄放可使典型农户在不实行分时电价和实行分时电价情景中的全年售电收益分别提升18.93%和51.07%。
The development of rural household PV is imminent.However,the dynamic matching of supply and demand caused by the random fluctuation of solar energy grows into a major obstacle to the development of rural household PV.With the rapid development of agricultural mechanization and electrification,the electric storage agricultural machinery is becoming more and more popular in rural areas.Using the energy storage battery of agricultural machinery in the idle period to assist the energy storage of residential buildings will become a new way to solve the problem of dynamic matching between supply and demand.This study took typical rural areas in the Guanzhong region as an example to conduct research.Typical farmers were selected to calculate the electricity load of residential buildings and consider the intervention of agricultural machinery and batteries.Under the assumption of installing 3 kW household photovoltaic,a flexible load optimization and control model with economic objectives was established to solve the problem.The results showed that:(1)The available time and adjustable power of agricultural machinery battery resources and flexible load resources are highly influenced by seasons and agricultural production activities.(2)With time-of-use electricity prices not implemented,the effective storage and discharge of agricultural machinery batteries can increase the photovoltaic consumption rate of typical farmers by 0.15%,5.99%,3.60%,and 8.41%on typical days of summer farming,summer fallowing,transition season fallowing,and winter fallowing,respectively.(3)With time-of-use electricity prices implemented,the effective storage and discharge of agricultural machinery batteries can increase the photovoltaic consumption rate of typical farmers by 4.99%,15.56%,16.44%,and 31.48%on typical days of summer farming,summer fallowing,transition season fallowing,and winter fallowing,respectively.In addition,the effective storage and discharge of agricultural machinery batteries can also reduce the peak electricity load of typ
作者
罗西
石文策
杨燕子
LUO Xi;SHI Wence;YANG Yanzi(School of Building Services Science and Engineering,Xi’an University of Architecture&Technology,Xi’an 710055,China;State Key Laboratory of Green Building,Xi’an 710055,China.)
出处
《建筑科学》
CSCD
北大核心
2024年第4期42-52,共11页
Building Science
基金
国家自然科学基金面上项目(52378109)
陕西省创新能力支撑计划-青年科技新星项目(2023KJXX-043)
陕西省科协青年人才托举计划项目(20220425)。
关键词
需求侧响应
柔性负荷
农业机械
居住建筑
户用光伏
demand response
flexible load
agricultural machinery
residential buildings
household photovoltaic system
