电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2014年
9期
2322-2327
,共6页
王岱%管晓宏%吴江%高君宇
王岱%管曉宏%吳江%高君宇
왕대%관효굉%오강%고군우
电动汽车%车辆行驶行为特性%充电和放电%电池成本%负荷波动
電動汽車%車輛行駛行為特性%充電和放電%電池成本%負荷波動
전동기차%차량행사행위특성%충전화방전%전지성본%부하파동
plug-in electric vehicles%driving pattern%charging and discharging%battery cost%load fluctuation
为分析电动汽车充放电对区域配电网的影响,减小充电负荷对电网的负面冲击,对离家时间、到家时间、每日行程个数和单个行程距离4个关键要素进行建模,建立了车辆行驶行为特性模型。基于行驶行为特性,通过两阶段优化模型,对电动汽车充放电代理商(aggregator)建立了考虑电池充放电寿命损耗的“最小费用-最小波动”(minimum-cost-least-fluctuation,MCLF)的充放电策略。该方法的目标是在满足用户需求的基础上,减少充放电代理商的运营费用,并将充放电负荷波动降到最低。仿真实验结果验证了该方法的有效性,并且表明:当电池成本降至现阶段的1/4,放电电价提高到0.6元/kW?h,电动汽车参与对电网放电才会有显著的经济收益;谷电价时长为8h可以有效减小电动汽车充电对电网造成的冲击。
為分析電動汽車充放電對區域配電網的影響,減小充電負荷對電網的負麵遲擊,對離傢時間、到傢時間、每日行程箇數和單箇行程距離4箇關鍵要素進行建模,建立瞭車輛行駛行為特性模型。基于行駛行為特性,通過兩階段優化模型,對電動汽車充放電代理商(aggregator)建立瞭攷慮電池充放電壽命損耗的“最小費用-最小波動”(minimum-cost-least-fluctuation,MCLF)的充放電策略。該方法的目標是在滿足用戶需求的基礎上,減少充放電代理商的運營費用,併將充放電負荷波動降到最低。倣真實驗結果驗證瞭該方法的有效性,併且錶明:噹電池成本降至現階段的1/4,放電電價提高到0.6元/kW?h,電動汽車參與對電網放電纔會有顯著的經濟收益;穀電價時長為8h可以有效減小電動汽車充電對電網造成的遲擊。
위분석전동기차충방전대구역배전망적영향,감소충전부하대전망적부면충격,대리가시간、도가시간、매일행정개수화단개행정거리4개관건요소진행건모,건립료차량행사행위특성모형。기우행사행위특성,통과량계단우화모형,대전동기차충방전대리상(aggregator)건립료고필전지충방전수명손모적“최소비용-최소파동”(minimum-cost-least-fluctuation,MCLF)적충방전책략。해방법적목표시재만족용호수구적기출상,감소충방전대리상적운영비용,병장충방전부하파동강도최저。방진실험결과험증료해방법적유효성,병차표명:당전지성본강지현계단적1/4,방전전개제고도0.6원/kW?h,전동기차삼여대전망방전재회유현저적경제수익;곡전개시장위8h가이유효감소전동기차충전대전망조성적충격。
To analyze the impact of plug-in electric vehicles (PEV) on regional distribution network and alleviate the effect of charging load of PEV on power grid, through the modeling of four essential elements of PEV such as the time away from home, the time to go back home, number of daily trips and the distance of single trip, a vehicle driving pattern model is established. Based on the vehicle-driving pattern and through the two-stage optimization model, a minimum-cost-least-fluctuation (MCLF) charging/discharging strategy, in which the charging/discharging life loss of battery is considered, is built. The goal of the proposed method is to decrease the operating cost of charging/discharging agents and to reduce the fluctuation of charging/discharging load to a minimum while the client demands are satisfied. The effectiveness of the proposed method is validated by the result of simulation experiments, and it is also shown that only the cost of the battery is reduced to one fourth of its current price and the discharging price is increased to 0.6 CNY/kWh, the participation of PEV in the discharging of vehicles to power grid could be able to bring evident economic returns;the 8 hours duration of the electricity price for the valley-load period can effectively mitigate the impact of PEV charging on power grid.