摘要
为了利用分时电价实现电动汽车的有序充电,提出了一种考虑分时电价的充电负荷计算方法。将电池充电过程划分为5个阶段,考虑行程结束时间与每日行驶里程的概率分布,计算了考虑分时电价后全天各时段内一辆电动汽车处于电池各充电阶段的概率,结合电池各充电阶段的充电功率,得到每个时段内一辆电动汽车的充电负荷期望值,根据中心极限定理计算了所有车辆充电负荷的分布情况。仿真结果表明,考虑分时电价后,充电负荷集中分布于谷时段,降低了对电网的不利影响。与蒙特卡洛模拟方法相比,该方法计算效率更高,计算结果基本相同。
A method of EV（Electric Vehicle） charging load calculation considering TOU（Time Of Use） is proposed to coordinate the charging of EVs,which divides the battery charging process into five phases, calculates,with the consideration of TOU,the probability of each battery charging phase in each period for an EV according to the probability distribution of trip terminating time and daily travel distance,calculates the expectation of charging load of an EV for different periods according to the battery charging power of different phases,and calculates the charging load distribution of total EVs by the central limit theory. Simulative results show that,the charging loads are concentrated in valley period because of TOU,which reduces the adverse affect on grid. Compared with Monte Carlo simulation method,the proposed method has higher efficiency and same results.
出处
《电力自动化设备》
EI
CSCD
北大核心
2014年第2期24-29,共6页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(51137003
61104090)
国家高技术研究发展计划(863计划)资助项目(2012AA050217)~~
关键词
电动汽车
充电负荷计算
电池
分时电价
electric vehicles
charging load calculation
electric batteries
TOU
