[{"data":1,"prerenderedAt":931},["ShallowReactive",2],{"report-metering-sample":3},{"id":4,"title":5,"body":6,"category":920,"date":921,"description":922,"extension":923,"meta":924,"navigation":925,"path":926,"reportType":927,"seo":928,"stem":929,"__hash__":930},"report\u002Freports\u002Fmetering-sample.md","充电站用电效率监测报告（样例）",{"type":7,"value":8,"toc":890},"minimark",[9,24,28,123,129,133,136,141,144,148,151,155,158,162,165,265,271,274,278,281,285,288,292,426,429,433,436,523,526,530,533,592,595,599,602,703,706,710,713,717,720,724,727,731,734,738,788,792,795,799,802,806,875,878,882,885],[10,11,12],"blockquote",{},[13,14,15,19,20,23],"p",{},[16,17,18],"strong",{},"样例说明","：本报告为",[16,21,22],{},"检测服务样例报告","，文中电量、损耗率等数据均为示例数据，\n用于展示报告形式与分析方法；正式报告以现场监测周期内实际采集数据编制。\n监测对象为某重卡充电站，客户与项目信息已隐去。",[25,26,27],"h2",{"id":27},"结论摘要",[29,30,31,47],"table",{},[32,33,34],"thead",{},[35,36,37,41,44],"tr",{},[38,39,40],"th",{},"指标",[38,42,43],{},"本期",[38,45,46],{},"说明",[48,49,50,64,75,86,97,108],"tbody",{},[35,51,52,56,61],{},[53,54,55],"td",{},"月度综合电损率",[53,57,58],{},[16,59,60],{},"8.19%",[53,62,63],{},"略高于 7%~8% 的行业健康区间上限",[35,65,66,69,72],{},[53,67,68],{},"其中 · AC\u002FDC 转换损耗",[53,70,71],{},"4.82%",[53,73,74],{},"占全站总损耗 55.5%，电量绝对值最大",[35,76,77,80,83],{},[53,78,79],{},"其中 · 变压器损耗",[53,81,82],{},"1.12%",[53,84,85],{},"处于同类场站正常水平",[35,87,88,91,94],{},[53,89,90],{},"其中 · 高压计量偏差",[53,92,93],{},"1.30%",[53,95,96],{},"随负载率非线性变化",[35,98,99,102,105],{},[53,100,101],{},"其中 · 低压线缆损耗",[53,103,104],{},"1.17%",[53,106,107],{},"处于正常区间上限，个别回路偏高",[35,109,110,115,120],{},[53,111,112],{},[16,113,114],{},"整改后预期",[53,116,117],{},[16,118,119],{},"约 7.3%",[53,121,122],{},"落实管理手段与低成本技改后",[13,124,125,128],{},[16,126,127],{},"报告结构","：项目概述 → 监测方案与计量点位布置 → 监测数据与损耗分析 → 主要发现与问题诊断 → 改进措施 → 结论与建议。",[25,130,132],{"id":131},"一项目概述","一、项目概述",[13,134,135],{},"本章说明本次用电效率监测服务的背景、目的与覆盖范围，明确\"为什么测、测什么\"。",[137,138,140],"h3",{"id":139},"一监测背景与目的","（一）监测背景与目的",[13,142,143],{},"重卡充电站属于大工业用电场景，电量吞吐量大，\"看不见的电损\"直接侵蚀运营利润。行业经验表明，一座规划合理的重卡充电站，从 10kV 进线到电池端的全链路综合电损一般在 7%~8%；若超过 10%，则意味着存在设备缺陷、计量偏差或运行调度不合理等问题。\n本次监测通过在场站关键节点加装高精度考核计量表，与国网高计表及充电桩内置表逐级比对，分环节、分功率档量化各环节电损，回答三个核心问题：电损到底发生在哪里？各环节损耗是否处于正常水平？可以通过什么措施把损耗降下来？",[137,145,147],{"id":146},"二监测范围","（二）监测范围",[13,149,150],{},"本站 10kV 专线进线，经高压计量柜（国网高计表，结算依据）接入 10 台箱变，降压至 380V 后分回路供电：重卡区为多组大功率直流充电桩（400kW 超充），小车区右下角为堆充设备。监测覆盖高计表后总回路、全部箱变、重卡直流充电区及小车区堆充回路。",[25,152,154],{"id":153},"二监测方案与计量点位布置","二、监测方案与计量点位布置",[13,156,157],{},"本章给出计量点位布置、比对关系与分档统计方法，说明\"表装在哪里、和谁比、怎么算\"。",[137,159,161],{"id":160},"一计量点位","（一）计量点位",[13,163,164],{},"本方案共布设 6 类计量比对点，形成\"国网表 → 考核总表 → 箱变前 → 箱变后 → 桩前 → 桩内置直流表\"的逐级电量平衡链：",[29,166,167,183],{},[32,168,169],{},[35,170,171,174,177,180],{},[38,172,173],{},"点位",[38,175,176],{},"安装位置",[38,178,179],{},"比对基准",[38,181,182],{},"计量目的",[48,184,185,199,212,225,238,252],{},[35,186,187,190,193,196],{},[53,188,189],{},"M0",[53,191,192],{},"高计表（国网结算表）",[53,194,195],{},"—",[53,197,198],{},"电量基准（网侧购电量）",[35,200,201,204,207,209],{},[53,202,203],{},"M1",[53,205,206],{},"高计表后回路考核总表",[53,208,189],{},[53,210,211],{},"检测高计表与回路考核表的读数偏差（表计误差  +  计量互感器合成误差）",[35,213,214,217,220,222],{},[53,215,216],{},"M2",[53,218,219],{},"各箱变高压 \u002F 进线侧",[53,221,203],{},[53,223,224],{},"线损",[35,226,227,230,233,235],{},[53,228,229],{},"M3",[53,231,232],{},"各箱变低压出线侧",[53,234,216],{},[53,236,237],{},"计量变压器损耗（空载  +  负载）",[35,239,240,243,246,249],{},[53,241,242],{},"M4",[53,244,245],{},"重卡区交流进线前",[53,247,248],{},"M3 ；与桩内置直流表  M4′  比对",[53,250,251],{},"线损；计量  AC\u002FDC  转换效率（转换损耗）",[35,253,254,257,260,263],{},[53,255,256],{},"M5",[53,258,259],{},"小车区堆充设备交流进线前",[53,261,262],{},"M3 ；与桩内置直流表  M5′  比对",[53,264,251],{},[13,266,267],{},[268,269,270],"em",{},"图 2-1 计量点位布置与损耗环节示意",[13,272,273],{},"如图 2-1 所示，五处红色标注即为本次监测量化的五个损耗环节：① 高计表读数偏差、② 变压器损耗、③ 低压线缆损耗、④ 重卡区桩 AC\u002FDC 转换损耗、⑤ 小车区堆充 AC\u002FDC 转换损耗。各环节损耗率均按功率分档统计，详见第三章。",[137,275,277],{"id":276},"二监测方法","（二）监测方法",[13,279,280],{},"全部考核表采用 0.5S 级及以上准确度等级三相智能电能表，15 分钟冻结电量，同步采集电压、电流、功率、功率因数；\n各点位表计时钟统一校对，保证电量冻结数据时间对齐，避免日冻结错位引入虚假偏差；\n偏差分析按功率（负载率）分档统计。经验表明，各环节偏差并非线性——小电流工况下互感器误差、表计启动误差、模块固定损耗占比显著升高，大电流工况下以电阻性损耗（I²R）为主，因此必须分档计算偏差率，才能真实还原损耗构成。",[25,282,284],{"id":283},"三监测数据与损耗分析","三、监测数据与损耗分析",[13,286,287],{},"以下数据均来自监测周期内各计量点位的逐日冻结读数，按环节逐级核对电量平衡。",[137,289,291],{"id":290},"一总体电量平衡","（一）总体电量平衡",[29,293,294,312],{},[32,295,296],{},[35,297,298,301,303,306,309],{},[38,299,300],{},"环节",[38,302,173],{},[38,304,305],{},"月电量（ kWh ）",[38,307,308],{},"本环节损耗（ kWh ）",[38,310,311],{},"损耗率",[48,313,314,329,345,360,377,394,411],{},[35,315,316,319,322,325,327],{},[53,317,318],{},"网侧购电",[53,320,321],{},"M0  高计表",[53,323,324],{},"420,000",[53,326,195],{},[53,328,195],{},[35,330,331,334,337,340,343],{},[53,332,333],{},"高计表后回路",[53,335,336],{},"M1  考核总表",[53,338,339],{},"414,540",[53,341,342],{},"5,460",[53,344,93],{},[35,346,347,350,352,355,358],{},[53,348,349],{},"箱变后合计",[53,351,229],{},[53,353,354],{},"409,900",[53,356,357],{},"4,640",[53,359,82],{},[35,361,362,365,368,371,374],{},[53,363,364],{},"重卡区进线前  +  小车区堆充前",[53,366,367],{},"M4 + M5",[53,369,370],{},"405,100",[53,372,373],{},"4,800",[53,375,376],{},"1.17% （低压线缆）",[35,378,379,382,385,388,391],{},[53,380,381],{},"重卡桩内置直流表合计",[53,383,384],{},"M4′",[53,386,387],{},"376,900",[53,389,390],{},"19,100",[53,392,393],{},"4.82% （ AC\u002FDC  转换）",[35,395,396,399,402,405,408],{},[53,397,398],{},"小车区堆充内置直流表合计",[53,400,401],{},"M5′",[53,403,404],{},"8,690",[53,406,407],{},"410",[53,409,410],{},"4.50% （ AC\u002FDC  转换）",[35,412,413,416,418,421,424],{},[53,414,415],{},"全链路合计",[53,417,195],{},[53,419,420],{},"输入  420,000 \u002F  输出  385,590",[53,422,423],{},"34,410",[53,425,60],{},[13,427,428],{},"本站月度综合电损率 8.19%，略高于 7%~8% 的行业健康区间上限。各环节损耗电量占全站总损耗的比重为：充电桩 AC\u002FDC 转换环节 55.5%（其损耗率为 4.82%）、高压计量偏差 15.9%、低压线缆损耗 14.0%、变压器损耗 13.5%、小车区堆充转换损耗 1.2%。\n指标说明：充电桩 AC\u002FDC 转换损耗率 4.82%，即充电桩内部把交流电整流为直流电过程中的损耗电量（19,100 kWh，即重卡区进线前监测表 M4 与桩内置直流表 M4′ 的读数之差）占桩前供电量（396,000 kWh）的比例，处于主流充电模块 4%~5% 损失的正常水平。由于转换损耗电量为全站各损耗环节中绝对值最大的一项，它占全站总损耗电量（34,410 kWh）的比重达 55.5%——即全站每损耗 100 度电，约有 55 度消耗在交直流转换环节。两个指标口径不同：4.82% 衡量的是转换环节本身的效率，55.5% 衡量的是该环节在全站损耗中的权重，并非转换损耗高达 55%。该损耗属电力电子器件开关与导通发热造成的物理性损耗，并非场站管理漏洞；可优化方向是消除异常个体（如散热劣化的 P3 桩）与减少低功率段（涓流）运行时长，而非将其归零。",[137,430,432],{"id":431},"二高计表与回路考核表偏差分析m0-vs-m1","（二）高计表与回路考核表偏差分析（M0 vs M1）",[13,434,435],{},"按回路平均负载率分档统计，偏差率呈现明显的非线性特征：",[29,437,438,454],{},[32,439,440],{},[35,441,442,445,448,451],{},[38,443,444],{},"回路负载率区间",[38,446,447],{},"出现时长占比",[38,449,450],{},"偏差率",[38,452,453],{},"主要成因",[48,455,456,470,484,498,512],{},[35,457,458,461,464,467],{},[53,459,460],{},"\u003C20% （夜间轻载）",[53,462,463],{},"31%",[53,465,466],{},"2.1%",[53,468,469],{},"互感器小信号误差、表计启动误差占比高",[35,471,472,475,478,481],{},[53,473,474],{},"20%~50%",[53,476,477],{},"38%",[53,479,480],{},"1.4%",[53,482,483],{},"表计固有误差为主",[35,485,486,489,492,495],{},[53,487,488],{},"50%~80%",[53,490,491],{},"22%",[53,493,494],{},"1.1%",[53,496,497],{},"互感器合成误差趋稳",[35,499,500,503,506,509],{},[53,501,502],{},">80% （高峰满载）",[53,504,505],{},"9%",[53,507,508],{},"0.8%",[53,510,511],{},"以高压侧至计量点间的固有损耗为主",[35,513,514,517,519,521],{},[53,515,516],{},"月度加权",[53,518,195],{},[53,520,93],{},[53,522,195],{},[13,524,525],{},"结论：偏差率随功率升高而下降，轻载时段偏差率约为满载时段的 2.6 倍。该偏差为计量性质的\"账面偏差\"与物理损耗的混合，我们分级建立修正曲线，将高计表和加装表的偏差影响降到最低。",[137,527,529],{"id":528},"三变压器损耗分析m2-vs-m3","（三）变压器损耗分析（M2 vs M3）",[13,531,532],{},"本站 10 台箱变（S13 型 800kVA 系列）月度合计：",[29,534,535,549],{},[32,536,537],{},[35,538,539,542,544,547],{},[38,540,541],{},"损耗分量",[38,543,305],{},[38,545,546],{},"占变损比",[38,548,46],{},[48,550,551,565,579],{},[35,552,553,556,559,562],{},[53,554,555],{},"空载损耗（铁损）",[53,557,558],{},"1,008",[53,560,561],{},"21.7%",[53,563,564],{},"24  小时恒定存在，与负载无关",[35,566,567,570,573,576],{},[53,568,569],{},"负载损耗（铜损）",[53,571,572],{},"3,632",[53,574,575],{},"78.3%",[53,577,578],{},"与负载系数平方成正比",[35,580,581,584,586,589],{},[53,582,583],{},"合计",[53,585,357],{},[53,587,588],{},"100%",[53,590,591],{},"综合损耗率  1.12%",[13,593,594],{},"变损率随负载率变化明显：夜间低谷时段（0:00–6:00）平均负载率不足 8%，该时段铁损占时段损耗的 90% 以上；高峰时段变损率降至 0.8% 左右。本站变压器选型与负载水平总体匹配，综合损耗率处于同类场站正常水平（约 1%~1.5%）。",[137,596,598],{"id":597},"四重卡直流充电桩-acdc-转换效率m4-vs-m4","（四）重卡直流充电桩 AC\u002FDC 转换效率（M4 vs M4′）",[13,600,601],{},"以重卡区进线前监测表电量与桩内置直流表电量逐单比对，按桩输出功率占额定功率比例分档：",[29,603,604,620],{},[32,605,606],{},[35,607,608,611,614,617],{},[38,609,610],{},"输出功率档（ % 额定）",[38,612,613],{},"电量占比",[38,615,616],{},"平均转换效率",[38,618,619],{},"对应损耗率",[48,621,622,636,650,664,677,691],{},[35,623,624,627,630,633],{},[53,625,626],{},"\u003C10% （末段涓流）",[53,628,629],{},"6%",[53,631,632],{},"87.5%",[53,634,635],{},"12.5%",[35,637,638,641,644,647],{},[53,639,640],{},"10%~30%",[53,642,643],{},"14%",[53,645,646],{},"93.0%",[53,648,649],{},"7.0%",[35,651,652,655,658,661],{},[53,653,654],{},"30%~50%",[53,656,657],{},"21%",[53,659,660],{},"94.8%",[53,662,663],{},"5.2%",[35,665,666,668,671,674],{},[53,667,488],{},[53,669,670],{},"41%",[53,672,673],{},"95.9%",[53,675,676],{},"4.1%",[35,678,679,682,685,688],{},[53,680,681],{},"80%~100%",[53,683,684],{},"18%",[53,686,687],{},"95.5%",[53,689,690],{},"4.5%",[35,692,693,696,698,701],{},[53,694,695],{},"加权平均",[53,697,588],{},[53,699,700],{},"95.2%",[53,702,71],{},[13,704,705],{},"转换效率呈\"两头低、中间高\"特征：50%~80% 功率区间效率最高；末段涓流时段效率降至 87.5%，是效率洼地。逐桩比对发现，P3 号桩月度平均效率仅 92.8%，显著低于其余各堆（95.3%~96.0%），现场检查确认其模块进风口防尘网堵塞、散热风扇个别停转，模块长期高温降额运行导致效率劣化。",[137,707,709],{"id":708},"五小车区堆充-acdc-转换效率m5-vs-m5","（五）小车区堆充 AC\u002FDC 转换效率（M5 vs M5′）",[13,711,712],{},"小车区堆充月电量 9,100 kWh，堆充内置直流表电量 8,690 kWh，AC\u002FDC 转换损耗 410 kWh（4.50%），处于正常水平。由于小车区充电订单功率普遍较小、轻载时长占比高，其平均转换效率（95.5%）略低于重卡区，属正常现象；后续可结合堆充模块投切策略进一步优化轻载时段的运行效率。",[137,714,716],{"id":715},"六低压线缆损耗m3-vs-m4m5","（六）低压线缆损耗（M3 vs M4\u002FM5）",[13,718,719],{},"低压侧月度线缆损耗 4,800 kWh（1.17%），总体处于 0.5%~1% 的正常区间上限。逐回路排查发现 B2 箱变出线回路线损率高达 2.3%（其余回路 0.8%~1.0%），红外测温显示其出线端接头温度比同类部位高 14℃，判断为接头接触电阻增大所致。",[25,721,723],{"id":722},"四主要发现与问题诊断","四、主要发现与问题诊断",[13,725,726],{},"综合电损率 8.19%，略超行业健康区间。损耗电量的大头在桩内 AC\u002FDC 转换环节（其损耗率 4.82% 属正常水平，因电量绝对值最大而占全站总损耗的 55.5%），但存在 P3 桩异常劣化的个体问题。\nP3 号桩转换效率异常偏低（92.8% vs 平均 95.2%），直接原因散热不良，估算单桩月度多损电量约 2,100 kWh。\nB2 箱变出线接头缺陷，该回路线损率 2.3%，为正常值的 2.5 倍以上，且存在发热安全隐患。\n轻载时段结构性损耗偏高。夜间低谷时段铁损、表计偏差、模块固定损耗叠加，该时段损耗率超过 15%；当前夜间车流量低，固定损耗摊薄不足。\n高计表偏差非线性，轻载偏差率 2.1%，建议建立分档修正曲线用于月度电量核算，避免\"账面差电\"争议。",[25,728,730],{"id":729},"五改进措施","五、改进措施",[13,732,733],{},"按\"先零成本管理手段、后小成本技改\"的顺序分层实施，并给出预期效益测算。",[137,735,737],{"id":736},"一立即整改项零低成本","（一）立即整改项（零\u002F低成本）",[29,739,740,753],{},[32,741,742],{},[35,743,744,747,750],{},[38,745,746],{},"措施",[38,748,749],{},"针对问题",[38,751,752],{},"预期效果",[48,754,755,766,777],{},[35,756,757,760,763],{},[53,758,759],{},"清洁  P3  桩全部模块防尘网、更换故障散热风扇，全站防尘网纳入月度例保",[53,761,762],{},"P3  桩效率劣化",[53,764,765],{},"单堆效率恢复至  95%  以上，年节电约  25,000 kWh",[35,767,768,771,774],{},[53,769,770],{},"B2  回路出线接头紧固 \u002F 更换，整改后红外复测",[53,772,773],{},"接触电阻增大",[53,775,776],{},"回路线损率降至  1%  以内，年节电约  9,000 kWh ，并消除过热隐患",[35,778,779,782,785],{},[53,780,781],{},"灯箱、常亮屏幕、常转风扇加装温控与定时启停",[53,783,784],{},"待机辅属损耗",[53,786,787],{},"月节电约  1,000 kWh",[137,789,791],{"id":790},"二运行调度优化","（二）运行调度优化",[13,793,794],{},"谷电集中运营：引导重卡车队在谷电时段集中充电，既降低度电成本，又以较高且稳定的负载率运行，摊薄铁损与固定损耗，年节电约 12,000 kWh；\n桩间功率均衡：利用功率分配功能避免个别桩长期轻载运行，使各桩工作点尽量落在 50%~80% 高效区间；\n涓流策略优化：与运营平台联动，对末段涓流（\u003C10% 功率且 SOC>95%）及时结束订单，减少低效充电时长。",[137,796,798],{"id":797},"三计量管理措施","（三）计量管理措施",[13,800,801],{},"分级建立 M0–M1 偏差修正曲线，月度电量核算时按档修正；\n考核表每 12 个月送检一次，与国网高计表做季度在线比对；\n将\"分环节损耗率\"纳入场站月度运营报表，设定预警阈值（综合电损率 >9% 触发排查）。",[137,803,805],{"id":804},"四经济效益测算","（四）经济效益测算",[29,807,808,821],{},[32,809,810],{},[35,811,812,815,818],{},[38,813,814],{},"措施类别",[38,816,817],{},"年节电量（ kWh ）",[38,819,820],{},"年效益（元）",[48,822,823,834,845,856,865],{},[35,824,825,828,831],{},[53,826,827],{},"P3  桩及全站散热整改",[53,829,830],{},"25,000",[53,832,833],{},"15,000",[35,835,836,839,842],{},[53,837,838],{},"B2  回路接头整改",[53,840,841],{},"9,000",[53,843,844],{},"5,400",[35,846,847,850,853],{},[53,848,849],{},"待机功耗管控",[53,851,852],{},"12,000",[53,854,855],{},"7,200",[35,857,858,861,863],{},[53,859,860],{},"谷电集中  +  功率均衡调度",[53,862,852],{},[53,864,855],{},[35,866,867,869,872],{},[53,868,583],{},[53,870,871],{},"58,000",[53,873,874],{},"约  34,800",[13,876,877],{},"上述措施全部实施后，预计综合电损率可由 8.19% 降至 7.3% 左右，回到行业健康区间。",[25,879,881],{"id":880},"六结论与建议","六、结论与建议",[13,883,884],{},"本站全链路综合电损率 8.19%，构成以桩内 AC\u002FDC 转换环节为主（损耗率 4.82%，占全站总损耗的 55.5%），变压器、线缆、计量偏差环节均处于正常或可控水平；\n发现并定位了两处异常个体问题（P3 桩散热劣化、B2 回路接头缺陷），整改成本低、见效快，建议两周内完成；\n电损随功率呈明显非线性变化，建议持续以分档方式跟踪各环节损耗率，把\"分环节损耗率\"作为场站核心运营指标；\n建议保持监测表计长期在位运行，按月出具损耗分析简报，动态验证改进措施成效，并为后续增容、设备选型（如高效率 SiC 充电模块）积累数据依据。",[10,886,887],{},[13,888,889],{},"附注：本报告为检测服务样例报告，文中电量、损耗率等数据均为示例数据，用于展示报告形式与分析方法；正式报告将以现场监测周期内实际采集数据编制。",{"title":891,"searchDepth":892,"depth":892,"links":893},"",2,[894,895,900,904,912,913,919],{"id":27,"depth":892,"text":27},{"id":131,"depth":892,"text":132,"children":896},[897,899],{"id":139,"depth":898,"text":140},3,{"id":146,"depth":898,"text":147},{"id":153,"depth":892,"text":154,"children":901},[902,903],{"id":160,"depth":898,"text":161},{"id":276,"depth":898,"text":277},{"id":283,"depth":892,"text":284,"children":905},[906,907,908,909,910,911],{"id":290,"depth":898,"text":291},{"id":431,"depth":898,"text":432},{"id":528,"depth":898,"text":529},{"id":597,"depth":898,"text":598},{"id":708,"depth":898,"text":709},{"id":715,"depth":898,"text":716},{"id":722,"depth":892,"text":723},{"id":729,"depth":892,"text":730,"children":914},[915,916,917,918],{"id":736,"depth":898,"text":737},{"id":790,"depth":898,"text":791},{"id":797,"depth":898,"text":798},{"id":804,"depth":898,"text":805},{"id":880,"depth":892,"text":881},"计量监测","2026-09-21","以某重卡充电站为监测对象的技术检测报告样例：高计表偏差、变压器损耗、低压线缆损耗与交直流转换效率的分环节量化分析与改进措施。","md",{},true,"\u002Freports\u002Fmetering-sample","sample",{"title":5,"description":922},"reports\u002Fmetering-sample","r4wYLiaGNYor3m28es0f7_mZTW3vduntHouvcZT04oA",1790053119155]