首页
登录
职称英语
Widespread adoption of plug-in electric vehicles could dramatically cut gree
Widespread adoption of plug-in electric vehicles could dramatically cut gree
游客
2023-08-06
39
管理
问题
Widespread adoption of plug-in electric vehicles could dramatically cut greenhouse gas pollution and reduce U.S. dependence on foreign oil. But results of an electric-car pilot project presented recently at the annual meeting of the American Association for the Advancement of Science provide added incentive to go electric: Car owners could return unused electricity back to the grid (输电网) and make real money while doing it.
Electric cars need big, powerful batteries to accelerate to highway speeds and travel scores or even several hundred kilometers on a single charge. But because most drivers drive just a few dozen kilometers a day, most of that battery capacity sits unused. To take advantage of that storage capacity, Willett Kempton, director of the University of Delaware’s Center for Carbon-Free Power Integration in Lewes, teamed up with an electric car maker, several utilities, a software company, and PJM Interconnection, one of 10 regional organizations that coordinate and control the U.S. electrical grid.
To ensure that electricity flows steadily and without interruption, the U.S. government requires PJM Interconnection and its counterparts to have reserves of power in case a generator goes down and other electrical reserves to maintain the 60-Hz frequency of alternating current that our appliances and devices are accustomed to dealing with. Today, PJM Interconnection and its counterparts pay conventional power plants to maintain this reserve power. But as renewable energy sources such as wind and solar, which provide energy cleanly but intermittently, come online, these grid operators need to increase their storage capacity to ensure a steady electricity supply. So Kempton and his colleagues set out to provide some of the backup power from a fleet of parked electric cars.
Kempton’s team used an electric car from AC Propulsions, a California car company, which was custom-built to provide electricity back to the grid. They used commercially available software and hardware that companies such as PJM Interconnection use to monitor and control energy flow. In November, the company hooked the grid up to the car, and Kempton’s team’s electric car became the first car in the world to earn its keep as a backup electric power source. At the rates that PJM Interconnection pays today to maintain power reserves, a hooked-in electric car could generate $1,800 a year for its owner.
"I think it’s tremendously exciting," says Kathryn Clay, director of research for the Alliance of Automobile Manufacturers. "The extra dollars an electric car provides will not be enough by themselves to get consumers to adopt grid-enabled vehicles—for that we also need better and less expensive batteries and tax incentives to give the market an encouragement" Nevertheless, "it’s an incentive to push in the right direction."
选项
答案
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2901320.html
相关试题推荐
ManyEuropeancountrieshavebeenmakingtheshifttoelectricvehiclesandG
ManyEuropeancountrieshavebeenmakingtheshifttoelectricvehiclesandG
ManyEuropeancountrieshavebeenmakingtheshifttoelectricvehiclesandG
ManyEuropeancountrieshavebeenmakingtheshifttoelectricvehiclesandG
目前,能够把人带到太空的交通工具只有航天飞机和俄罗斯的“联盟号”,但是两者的效率都非常低。 Currently,theonlyvehiclesth
[originaltext]W:Withusnow,isMalcolmBricklin,CEOofVisionaryVehicles.M
[originaltext]W:Withusnow,isMalcolmBricklin,CEOofVisionaryVehicles.M
[originaltext]W:Withusnow,isMalcolmBricklin,CEOofVisionaryVehicles.M
[originaltext]W:Withusnow,isMalcolmBricklin,CEOofVisionaryVehicles.M
[originaltext]W:Withusnow,isMalcolmBricklin,CEOofVisionaryVehicles.M
随机试题
[originaltext]Apairofentrepreneursareplanningtobuildandlaunchasp
Itwastheexpeditionof______thatledtoBritain’sclaimtoAustralia.A、Abel
Thingswentwellforherduringherearlylifebutinhermiddleageher______s
检验检测专用章应表明检验检测机构完整的、准确的名称。()
患者,女性,33岁。左足开放性损伤3天。患处逐渐肿胀,并出现持续性剧烈疼痛,伤口
某企业2009年8月31日购入一项固定资产,该固定资产原价为64000万元,预计
下列关于压力感受性反射的描述,正确的是( )。A.感受器是颈动脉体和主动脉体
水泥混凝土抗折强度试验仪器设备有()。A.马歇尔试验机 B.万能实验机 C
关于骨软骨瘤临床表现的叙述,正确的是( )。A.一般无症状,为生长缓慢的骨性突
患者,男,5岁,持续发热15天,体温39℃~39.5℃,伴腹泻每日3~5次。体检
最新回复
(
0
)