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<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62519bac74bc5c01059dc606/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">第十届“中国电机工程学会杯”全国大学生电工数学建模竞赛赛题<span class="ff2"> </span></div><div class="t m0 x2 h2 y2 ff2 fs0 fc0 sc0 ls0 ws0">- 1 - </div><div class="t m0 x3 h3 y3 ff1 fs1 fc0 sc1 ls0 ws0">第十届“中国电机工程学会杯”全国大学生<span class="_ _0"></span>电工数学建模竞赛赛题<span class="ff3 sc0"> </span></div><div class="t m0 x4 h4 y4 ff4 fs2 fc0 sc1 ls0 ws0">A<span class="_ _1"> </span><span class="ff5">题:微<span class="_ _0"></span>电网日前<span class="_ _0"></span>优化调<span class="_ _0"></span>度<span class="ff6 fs3 sc0"> </span></span></div><div class="t m0 x5 h5 y5 ff6 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 y6 ff1 fs4 fc0 sc0 ls0 ws0">面对不断增长的电能需求以及化石能源的短缺,<span class="_ _2"></span>开发新型可持续发展的可再</div><div class="t m0 x7 h6 y7 ff1 fs4 fc0 sc0 ls0 ws0">生能源成为迫切需求。<span class="_ _3"></span>以风力发电、<span class="_ _3"></span>太阳能发电等为代表的环境友好型的电能生</div><div class="t m0 x7 h7 y8 ff1 fs4 fc0 sc0 ls0 ws0">产技术不断成熟。<span class="ff2"> </span></div><div class="t m0 x6 h6 y9 ff1 fs4 fc0 sc0 ls0 ws0">可再生能源根据其接入电力系统方式的不同,<span class="_ _2"></span>分为大规模集中接入和分布式</div><div class="t m0 x7 h7 ya ff1 fs4 fc0 sc0 ls0 ws0">接入,分布式接入主要应用于微电网。根据百<span class="_ _0"></span>度百科,微电网(<span class="ff2">Micro-Grid</span>)也</div><div class="t m0 x7 h6 yb ff1 fs4 fc0 sc0 ls0 ws0">译为微网,<span class="_ _4"></span>是指由分布式电源、<span class="_ _4"></span>储能装置、<span class="_ _4"></span>能量转换装置、<span class="_ _4"></span>负荷、<span class="_ _4"></span>监控和保护装</div><div class="t m0 x7 h6 yc ff1 fs4 fc0 sc0 ls1 ws0">置等组成的小型发配电系统。如何妥善管理微电网内部分布式<span class="ls0">电源<span class="_ _0"></span>和储<span class="_ _0"></span>能的<span class="_ _0"></span>运</span></div><div class="t m0 x7 h7 yd ff1 fs4 fc0 sc0 ls0 ws0">行,实现微电网经济、技术、环境效益的最大化成为重要的研究课题。<span class="ff2"> </span></div><div class="t m0 x6 h7 ye ff1 fs4 fc0 sc0 ls0 ws0">图<span class="_ _5"> </span><span class="ff2">1<span class="_"> </span></span>示意了一个含有风机、光伏、蓄电池以及常规负荷的微电网系统。<span class="ff2"> </span></div><div class="t m0 x6 h7 yf ff1 fs4 fc0 sc0 ls2 ws0">日前经济调度问题是指在对风机出力、光伏出力、常规负荷进行日前<span class="_ _6"></span><span class="ff2 ls0">(<span class="ff1 ls2">未来</span></span></div><div class="t m0 x7 h7 y10 ff2 fs4 fc0 sc0 ls0 ws0">24<span class="_ _7"> </span><span class="ff1">小时</span>)<span class="ff1">预测基础上,考虑电网侧的分时电价,充分利用微网中的蓄电池等可调</span></div><div class="t m0 x7 h7 y11 ff1 fs4 fc0 sc0 ls0 ws0">控手段,使微电网运行的经济性最优。<span class="ff2"> </span></div><div class="c x1 y12 w2 h8"><div class="t m1 x8 h9 y13 ff1 fs5 fc0 sc0 ls3 ws0">主网</div><div class="t m1 x9 ha y14 ff7 fs6 fc0 sc0 ls0 ws0">AC/<span class="_ _6"></span>D<span class="_ _6"></span>C<span class="_ _8"> </span>AC/<span class="_ _6"></span>D<span class="_ _6"></span>C<span class="_ _9"></span>AC/<span class="_ _6"></span>D<span class="_ _6"></span>C</div><div class="t m1 xa hb y15 ff1 fs7 fc0 sc0 ls0 ws0">储能</div><div class="t m1 xb hb y16 ff1 fs7 fc0 sc0 ls0 ws0">光伏</div><div class="t m1 xc h9 y17 ff1 fs5 fc0 sc0 ls3 ws0">负荷</div><div class="t m1 xd hb y18 ff1 fs7 fc0 sc0 ls0 ws0">风机</div><div class="t m1 x2 hb y19 ff1 fs7 fc0 sc0 ls0 ws0">微网</div><div class="t m1 xe hc y1a ff8 fs7 fc0 sc0 ls0 ws0">6<span class="_ _0"></span>0<span class="_ _6"></span>kW<span class="_ _0"></span>/30<span class="_ _0"></span>0<span class="_ _6"></span>kW<span class="_ _0"></span>h</div><div class="t m1 x6 hc y1b ff8 fs7 fc0 sc0 ls0 ws0">2<span class="_ _0"></span>5<span class="_ _6"></span>0k<span class="_ _0"></span>W</div><div class="t m1 xf hc y1c ff8 fs7 fc0 sc0 ls0 ws0">1<span class="_ _0"></span>5<span class="_ _6"></span>0k<span class="_ _0"></span>W</div><div class="t m1 x10 hc y1d ff8 fs7 fc0 sc0 ls0 ws0">S<span class="fs8">n</span>=<span class="_ _0"></span>300<span class="_ _0"></span>k<span class="_ _6"></span>W</div><div class="t m1 x11 hc y1e ff8 fs7 fc0 sc0 ls0 ws0">P<span class="fs8">m<span class="_ _0"></span>ax</span></div></div><div class="t m0 x12 h7 y1f ff2 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x13 hd y20 ff1 fs3 fc0 sc1 ls0 ws0">图<span class="_ _5"> </span><span class="ff3 sc0">1<span class="_ _6"></span> <span class="_"> </span> <span class="_"> </span><span class="ff1 sc1">微网系统结构</span> </span></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>
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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62519bac74bc5c01059dc606/bg2.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">第十届“中国电机工程学会杯”全国大学生电工数学建模竞赛赛题<span class="ff2"> </span></div><div class="t m0 x2 h2 y2 ff2 fs0 fc0 sc0 ls0 ws0">- 2 - </div><div class="t m0 x7 h7 y21 ff2 fs4 fc0 sc0 ls4 ws0"> <span class="ff1 ls0">微电网系统在满足各电源运行约束和负荷需求基础上,可对系统未来<span class="_ _1"> </span><span class="ff2">24<span class="_ _7"> </span></span>小</span></div><div class="t m0 x7 h6 y22 ff1 fs4 fc0 sc0 ls0 ws0">时的出力调控进行优化,<span class="_ _3"></span>以实现经济性最优。<span class="_ _3"></span>系统的总成本包含风机与光伏的发</div><div class="t m0 x7 h6 y23 ff1 fs4 fc0 sc0 ls0 ws0">电成本、<span class="_ _3"></span>蓄电池的成本,<span class="_ _3"></span>以及并网运行下微电网系统与外部电网之间的电能交换</div><div class="t m0 x7 h7 y24 ff1 fs4 fc0 sc0 ls0 ws0">成本。<span class="ff2"> </span></div><div class="t m0 x6 h7 y25 ff1 fs4 fc0 sc0 ls0 ws0">本题假设负荷预测、<span class="_ _a"></span>风机和光伏未来出力已完全准确,<span class="_ _a"></span>具体数据示于附表<span class="_ _5"> </span><span class="ff2">1</span>。<span class="_ _b"></span><span class="ff2"> </span></div><div class="t m0 x6 h7 y26 ff1 fs4 fc0 sc0 ls5 ws0">对于<span class="ls0">蓄<span class="_ _0"></span>电<span class="_ _c"></span>池<span class="_ _0"></span>,<span class="_ _c"></span>为<span class="_ _0"></span>防<span class="_ _0"></span>止<span class="_ _0"></span>蓄<span class="_ _c"></span>电<span class="_ _0"></span>池<span class="_ _c"></span>过<span class="_ _0"></span>充<span class="_ _c"></span>和<span class="_ _0"></span>过<span class="_ _c"></span>放<span class="_ _0"></span>的<span class="_ _0"></span>发<span class="_ _0"></span>生<span class="_ _d"></span>,<span class="_ _0"></span>蓄<span class="_ _c"></span>电<span class="_ _0"></span>池<span class="_ _c"></span>的<span class="_ _0"></span>荷<span class="_ _0"></span>电<span class="_ _0"></span>状<span class="_ _c"></span>态<span class="_ _c"></span><span class="ff2">(SOC, </span></span></div><div class="t m0 x7 h7 y27 ff2 fs4 fc0 sc0 ls0 ws0">State-<span class="_ _6"></span>of-Charg<span class="_ _6"></span>e<span class="ff1">,即电池剩余电量与电池容量的比值</span>)<span class="ff1">应满足上、下限值约束。</span> </div><div class="c x14 y28 w3 he"><div class="t m2 x15 hf y29 ff2 fs9 fc0 sc0 ls0 ws0">m<span class="_ _6"></span>i<span class="_ _6"></span>n<span class="_ _8"> </span>m<span class="_ _6"></span>ax<span class="_ _e"></span><span class="ff9">t</span></div><div class="t m2 x16 h10 y2a ff9 fsa fc0 sc0 ls0 ws0">S<span class="_ _f"> </span>S<span class="_ _10"> </span>S<span class="_ _11"></span><span class="ffa ls6"></span></div></div><div class="t m0 x17 h7 y2b ff2 fs4 fc0 sc0 ls4 ws0"> <span class="ls0">(1) </span></div><div class="t m0 x6 h11 y2c ff1 fs4 fc0 sc0 ls0 ws0">式中,<span class="ff9">S</span></div><div class="t m0 x18 h12 y2d ff9 fsb fc0 sc0 ls0 ws0">t</div><div class="t m0 x19 h11 y2c ff1 fs4 fc0 sc0 ls0 ws0">、<span class="ff9">S</span></div><div class="t m0 x1a h13 y2d ff2 fsb fc0 sc0 ls0 ws0">min</div><div class="t m0 x1b h11 y2c ff1 fs4 fc0 sc0 ls0 ws0">、<span class="ff9">S</span></div><div class="t m0 x1c h13 y2d ff2 fsb fc0 sc0 ls0 ws0">max</div><div class="t m0 x1d h7 y2c ff1 fs4 fc0 sc0 ls0 ws0">分别为蓄电池<span class="_ _1"> </span><span class="ff9">t<span class="_ _1"> </span></span>时段的<span class="_ _1"> </span><span class="ff2">S<span class="ls7">OC<span class="_ _1"> </span></span></span>状态及其上、下限值。即</div><div class="t m0 x7 h7 y2e ff1 fs4 fc0 sc0 ls0 ws0">当<span class="_ _5"> </span><span class="ff2">S<span class="ls7">OC<span class="_"> </span></span></span>到达电池最大值<span class="ff2">(<span class="ff9">S</span></span></div><div class="t m0 x1e h13 y2f ff2 fsb fc0 sc0 ls0 ws0">max</div><div class="t m0 x1f h7 y2e ff1 fs4 fc0 sc0 ls0 ws0">=<span class="ff2">0.95)</span>时,<span class="_ _12"></span>电池停止充电;<span class="_ _12"></span>当<span class="_ _5"> </span><span class="ff2">S<span class="ls7">OC<span class="_ _13"> </span></span></span>到达最小值<span class="ff2">(<span class="ff9">S</span></span></div><div class="t m0 x20 h13 y2f ff2 fsb fc0 sc0 ls0 ws0">min</div><div class="t m0 x7 h7 y30 ff1 fs4 fc0 sc0 ls0 ws0">=<span class="ff2">0.3)</span>时,电池停止放电。<span class="ff2"> </span></div><div class="t m0 x6 h7 y31 ff1 fs4 fc0 sc0 ls0 ws0">在单位时间间隔<span class="_ _5"> </span><span class="ffb">Δ<span class="ff9">t<span class="_ _13"> </span></span></span>内,蓄电池的充、放电功率均恒定,<span class="ff2">S<span class="ls7">OC<span class="_"> </span></span></span>数值变化由下</div><div class="t m0 x7 h7 y32 ff1 fs4 fc0 sc0 ls0 ws0">式决定:<span class="ff2"> </span></div><div class="c xb y33 w4 h14"><div class="t m3 x21 h15 y34 ff2 fsc fc0 sc0 ls8 ws0">,,</div><div class="t m3 x22 h15 y35 ff2 fsc fc0 sc0 ls9 ws0">11</div><div class="t m3 x23 h15 y36 ff2 fsc fc0 sc0 ls0 ws0">0</div><div class="t m3 x24 h16 y37 ff9 fsc fc0 sc0 lsa ws0">TT</div><div class="t m3 x25 h16 y34 ff9 fsc fc0 sc0 ls0 ws0">cha<span class="_ _14"> </span>t<span class="_ _15"> </span>t<span class="_ _16"> </span>dis<span class="_ _14"> </span>t<span class="_ _17"> </span>t</div><div class="t m3 x26 h16 y35 ff9 fsc fc0 sc0 lsb ws0">tt</div><div class="t m3 x15 h16 y36 ff9 fsc fc0 sc0 ls0 ws0">t</div><div class="t m3 x27 h16 y38 ff9 fsc fc0 sc0 ls0 ws0">b</div><div class="t m3 x28 h17 y39 ff9 fsd fc0 sc0 ls0 ws0">P<span class="_ _18"> </span>X<span class="_ _19"> </span>t<span class="_ _1a"> </span>P<span class="_ _15"> </span>Y<span class="_ _1b"> </span>t</div><div class="t m3 x16 h17 y3a ff9 fsd fc0 sc0 lsc ws0">SS</div><div class="t m3 x29 h17 y3b ff9 fsd fc0 sc0 ls0 ws0">E</div><div class="t m3 x24 h18 y35 ffa fsc fc0 sc0 lsd ws0"></div><div class="t m3 x3 h19 y39 ffa fsd fc0 sc0 ls0 ws0"><span class="_ _17"> </span><span class="_ _16"> </span></div><div class="t m3 x2a h19 y3a ffa fsd fc0 sc0 lse ws0"></div><div class="t m3 x2b h1a y3c ffa fse fc0 sc0 lsf ws0"></div></div><div class="t m0 x2c h7 y3d ff2 fs4 fc0 sc0 ls4 ws0"> <span class="fs0 ls0"> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span> <span class="_"> </span><span class="fs4">(2) </span></span></div><div class="t m0 x7 h7 y3e ff2 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h11 y3f ff1 fs4 fc0 sc0 ls0 ws0">式中,<span class="_ _1c"></span><span class="ff9">S</span></div><div class="t m0 x2d h13 y40 ff2 fsb fc0 sc0 ls0 ws0">0</div><div class="t m0 x2e h7 y3f ff1 fs4 fc0 sc0 ls0 ws0">为蓄电池的初始<span class="_ _5"> </span><span class="ff2">SOC<span class="_"> </span></span>状态;</div><div class="c x2f y41 w5 h1b"><div class="t m4 x30 h1c y42 ff2 fsf fc0 sc0 ls0 ws0">,<span class="_ _1d"></span><span class="ff9">ch<span class="_ _6"></span>a<span class="_ _14"> </span>t</span></div><div class="t m4 x16 h1d y43 ff9 fs10 fc0 sc0 ls0 ws0">P</div></div><div class="t m0 x31 h6 y3f ff1 fs4 fc0 sc0 ls0 ws0">和</div><div class="c x32 y41 w6 h1b"><div class="t m5 x33 h1c y42 ff2 fsf fc0 sc0 ls0 ws0">,<span class="_ _1e"></span><span class="ff9">dis<span class="_ _14"> </span>t</span></div><div class="t m5 x16 h1d y43 ff9 fs10 fc0 sc0 ls0 ws0">P</div></div><div class="t m0 x34 h11 y3f ff1 fs4 fc0 sc0 ls0 ws0">分别为蓄电池在第<span class="_ _5"> </span><span class="ff9">t<span class="_ _5"> </span></span>个时段</div><div class="t m0 x7 h11 y44 ff1 fs4 fc0 sc0 ls0 ws0">的<span class="_ _1f"></span>充<span class="_ _1f"></span>电<span class="_ _1f"></span>和<span class="_ _1f"></span>放<span class="_ _1f"></span>电<span class="_ _d"></span>功<span class="_ _1f"></span>率<span class="_ _1f"></span>;<span class="_ _1f"></span><span class="ff9">X</span></div><div class="t m0 x35 h12 y45 ff9 fsb fc0 sc0 ls0 ws0">t</div><div class="t m0 x36 h11 y44 ff1 fs4 fc0 sc0 ls0 ws0">和<span class="_ _20"> </span><span class="ff9">Y</span></div><div class="t m0 x37 h12 y45 ff9 fsb fc0 sc0 ls0 ws0">t</div><div class="t m0 x38 h6 y44 ff1 fs4 fc0 sc0 ls0 ws0">分<span class="_ _d"></span>别<span class="_ _1f"></span>为<span class="_ _1f"></span>蓄<span class="_ _1f"></span>电<span class="_ _1f"></span>池<span class="_ _1f"></span>的<span class="_ _1f"></span>充<span class="_ _1f"></span>电<span class="_ _1f"></span>状<span class="_ _1f"></span>态<span class="_ _d"></span>和<span class="_ _1f"></span>放<span class="_ _1f"></span>电<span class="_ _1f"></span>状<span class="_ _1f"></span>态<span class="_ _1f"></span>,<span class="_ _1f"></span>其<span class="_ _1f"></span>中</div><div class="c x7 y46 w7 he"><div class="t m6 x39 h1e y47 ff2 fs11 fc0 sc0 ls0 ws0">{<span class="_ _6"></span>0<span class="_ _6"></span>,<span class="_ _6"></span>1<span class="_ _6"></span>}</div><div class="t m6 x3a h1f y48 ff9 fs9 fc0 sc0 ls0 ws0">t</div><div class="t m6 x3b h20 y47 ff9 fs11 fc0 sc0 ls0 ws0">X<span class="_ _21"> </span><span class="ffa"></span></div></div><div class="t m0 x3c h6 y49 ff1 fs4 fc0 sc0 ls0 ws0">,</div><div class="c x3d y46 w8 he"><div class="t m7 x3e h1e y47 ff2 fs11 fc0 sc0 ls0 ws0">{<span class="_ _6"></span>0<span class="_ _6"></span>,1<span class="_ _22"></span>}</div><div class="t m7 x3f h1f y48 ff9 fs9 fc0 sc0 ls0 ws0">t</div><div class="t m7 x40 h20 y47 ff9 fs11 fc0 sc0 ls0 ws0">Y<span class="_ _7"> </span><span class="ffa"></span></div></div><div class="t m0 x4 h6 y49 ff1 fs4 fc0 sc0 ls0 ws0">;</div><div class="c x35 y4a w9 h21"><div class="t m8 x41 h22 y4b ff9 fs12 fc0 sc0 ls0 ws0">t<span class="_ _23"></span><span class="ffa"></span></div></div><div class="t m0 x42 h7 y49 ff1 fs4 fc0 sc0 ls0 ws0">为单位时间间隔,<span class="ff9">T<span class="_ _5"> </span></span>为时段总数。<span class="ff2"> </span></div><div class="t m0 x6 h6 y4c ff1 fs4 fc0 sc0 ls2 ws0">考虑到在同一时间间隔</div><div class="c x43 y4d w9 h23"><div class="t m9 x41 h24 y4e ff9 fs13 fc0 sc0 ls10 ws0">t<span class="_ _23"></span><span class="ffa"></span></div></div><div class="t m0 x44 h6 y4c ff1 fs4 fc0 sc0 ls0 ws0">内,蓄<span class="_ _0"></span>电池不<span class="_ _0"></span>能同<span class="_ _0"></span>时处<span class="_ _0"></span>于充电<span class="_ _0"></span>和放电<span class="_ _0"></span>状态<span class="_ _0"></span>,<span class="_ _0"></span><span class="ls1">因此</span></div><div class="t m0 x7 h7 y4f ff1 fs4 fc0 sc0 ls0 ws0">蓄电池的充放电状态需要满足以下约束:<span class="ff2"> </span></div><div class="t m0 x7 h7 y50 ff2 fs4 fc0 sc0 ls4 ws0"> </div><div class="c x35 y51 wa he"><div class="t ma x45 h1e y47 ff2 fs11 fc0 sc0 ls11 ws0">0</div><div class="t ma x3a h25 y48 ff9 fs14 fc0 sc0 ls12 ws0">tt</div><div class="t ma x3b h20 y47 ff9 fs11 fc0 sc0 ls13 ws0">XY<span class="_ _24"></span><span class="ffa ls14"></span></div></div><div class="t m0 x46 h7 y50 ff2 fs4 fc0 sc0 ls4 ws0"> <span class="ls0">(3) </span></div><div class="t m0 x6 h6 y52 ff1 fs4 fc0 sc0 ls0 ws0">蓄电池在参与系统的运行优化过程中,<span class="_ _2"></span>其能量状态需满足在调度周期始末相</div><div class="t m0 x7 h7 y53 ff1 fs4 fc0 sc0 ls0 ws0">等的约束:<span class="ff2"> </span></div><div class="t m0 x47 h7 y54 ff2 fs4 fc0 sc0 ls4 ws0"> </div><div class="c x43 y55 wb he"><div class="t mb x15 hf y48 ff2 fs9 fc0 sc0 ls11 ws0">0<span class="_ _25"> </span><span class="ff9">T</span></div><div class="t mb x16 h20 y47 ff9 fs11 fc0 sc0 ls15 ws0">SS<span class="_ _26"></span><span class="ffa ls0"></span></div></div><div class="t m0 x48 h7 y54 ff2 fs4 fc0 sc0 ls4 ws0"> <span class="ls0">(4) </span></div><div class="t m0 x6 h6 y56 ff1 fs4 fc0 sc0 ls0 ws0">同时,<span class="_ _3"></span>考虑到蓄电池充放电功率大小与电池的寿命有关,<span class="_ _3"></span>单位时间内充放电</div><div class="t m0 x7 h7 y57 ff1 fs4 fc0 sc0 ls0 ws0">最大功率为蓄电池组额定容量的<span class="_ _5"> </span><span class="ff2">20%</span>,即<span class="ff2"> </span></div><div class="c x49 y58 wc h26"><div class="t mc x4a h27 y59 ff2 fs15 fc0 sc0 ls0 ws0">,</div><div class="t mc xa h27 y5a ff2 fs15 fc0 sc0 ls0 ws0">,</div><div class="t mc x15 h28 y5b ff2 fs16 fc0 sc0 ls0 ws0">0<span class="_ _27"> </span>0.<span class="_ _6"></span>2</div><div class="t mc x4b h28 y5c ff2 fs16 fc0 sc0 ls0 ws0">(5<span class="_ _22"></span>)</div><div class="t mc x15 h28 y5d ff2 fs16 fc0 sc0 ls0 ws0">0<span class="_ _28"> </span>0.<span class="_ _6"></span>2</div><div class="t mc x4c h29 y59 ff9 fs15 fc0 sc0 ls0 ws0">ch<span class="_ _6"></span>a<span class="_ _14"> </span>t<span class="_ _29"> </span>b<span class="_ _2a"> </span>t</div><div class="t mc x4c h29 y5a ff9 fs15 fc0 sc0 ls0 ws0">dis<span class="_ _14"> </span>t<span class="_ _29"> </span>b<span class="_ _21"> </span>t</div><div class="t mc x4d h2a y5b ff9 fs16 fc0 sc0 ls0 ws0">P<span class="_ _2b"> </span>E<span class="_ _2c"> </span>X</div><div class="t mc x4d h2a y5d ff9 fs16 fc0 sc0 ls0 ws0">P<span class="_ _2d"> </span>E<span class="_ _5"> </span>Y</div><div class="t mc x33 h2b y5b ffa fs16 fc0 sc0 ls16 ws0"></div><div class="t mc x16 h2b y5e ffa fs16 fc0 sc0 ls0 ws0"></div><div class="t mc x16 h2b y5f ffa fs16 fc0 sc0 ls0 ws0"></div><div class="t mc x16 h2b y60 ffa fs16 fc0 sc0 ls0 ws0"></div><div class="t mc x33 h2b y5d ffa fs16 fc0 sc0 ls17 ws0"></div><div class="t mc x16 h2b y61 ffa fs16 fc0 sc0 ls0 ws0"></div><div class="t mc x16 h2b y62 ffa fs16 fc0 sc0 ls0 ws0"></div></div><div class="t m0 x4e h7 y63 ff2 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h11 y64 ff1 fs4 fc0 sc0 ls0 ws0">式中,<span class="ff9">E</span></div><div class="t m0 x4f h12 y65 ff9 fsb fc0 sc0 ls0 ws0">b</div><div class="t m0 x50 h7 y64 ff1 fs4 fc0 sc0 ls0 ws0">为电池容量。<span class="ff2"> </span></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>