环境与能源管理系统套件

设备级能耗与 OEE 分析

设备OEE

大多数工厂有两套数字：一套描述设备效能，一套描述能源。前者不知道机器用了多少电，后者很少细到车间或配电箱以下。于是，纸面上“低效的机器”和“费电的机器”从来不是同一台。

设备级能耗与 OEE 分析把能耗与 OEE 放在同一台设备、同一时段上看：这个班次有多久在产、其余时间在做什么、每种状态耗了多少电，折算到每件合格品是多少能耗。

关键区别在于：运转不等于在生产。换型、空转和待机都在耗电，却不产出任何东西。把它们区分开，才能说清电费里这一部分到底花在了哪里。

设备在转，不等于在生产。

精确到每台设备OEE 与能耗同看空闲与待机分列数据直供 MES

它是什么

One record per machine. Consumption and effectiveness are registered against the equipment itself, not averaged across a workshop or a distribution board.
OEE and its three components. Availability, performance and quality are calculated separately, and losses are broken down to a level someone can act on.
Energy split by what the machine was doing. Producing, changeover, idle running and standby are metered apart, with no-load and standby power identified on their own.
Energy per good unit. The denominator is good parts, not parts made, so quality loss and energy sit in the same table.
Machines compared with each other. Same model, same operation, ranked — so which one to start with is a decision with evidence behind it.
Two-way with MES. 订单、产量、合格数与班次取自 MES；OEE 与能耗结果回传给它。

当下的阻碍是什么

OEE 与能耗分开统计。两套数据，从未交汇。

效率系统不知道设备用了多少电。能耗系统也不知道设备当时是否在生产。能耗数据很少细到车间或配电柜以下。因此无法归因到单台设备。低效率与高能耗于是从不出现在同一行里。这正是两者总被当作两个问题讨论的原因。两套系统时间粒度不同、规则不同。即便数据都有，也无法并排对照。

设备状态靠猜。机器当时在做什么，是估计出来的，不是记录下来的。

生产中、换型、空转、待机与停机靠手工录入或经验判断。也就是说，只在有人有空时才填。夜班与无人时段无记录。状态列一片空白，或全部标为运行中。生产着却毫无产出不被察觉。因为没人持续盯着，而且从外面看一切正常。停机原因代码无人维护。随便填什么都可以，于是什么都分析不了。

设备自身的能耗是一只黑箱。Nobody knows which unit is expensive.

只知道车间总数。哪台设备是大用户，全凭各人说。同型号两台设备从未被对比过。彼此的差异因此不可见。新设备按铭牌功率选型。因为没有实测数据可作依据。待机与空载功率从未测量过。值不值得关机根本无从回答。

改善无从下手。没有基线，也就没有目标。

换型实际耗时没有记录。目标只能凭空编。待机该不该关机没有答案。关机会影响什么也不知道。前后无法在同一口径下对比。改动的成效始终只是一句说法。同类型设备没有排序。从哪台下手全凭印象。

它在每台设备上测量什么

五种状态，以及一个关键问题：哪些在生产，哪些只在耗能。

状态	是否生产	是否耗电	为何值得区分
生产中	是	是	分母与参照基准
换型	否	是	各状态耗时与耗电直接指向改进点
空转	否	是	空转无产出，也最容易被误认为正常
待机	否	是，通常较小	单看一刻很小，累计一班可观，常有可关机的窗口
关机	否	否	与待机分开统计，否则停机时长被低估

状态如何判定取决于现场条件。有机器信号的，状态取自信号；没有的，依据功率特征或规则推断，推断结果可人工修正。理想节拍、额定功率与状态阈值是按设备配置的参数——软件不替工厂拍板。本应用做的是区分状态、算出指标、呈现差距。待机的设备关不关、排产调不调，由现场决定。

您将获得

应用场景

不同设置之间的差异在于：哪些状态的代价最高，哪些损失值得优先解决。

场景	分析通常聚焦
离散制造——汽车零部件、机械	加工中心与产线设备：空转、换型时长、同型号设备间对比
注塑与成型	待机保持功率、空循环、每模次能耗
电子与半导体	工艺设备待机、温湿度负荷、换线损耗
食品饮料与中央厨房	清洗与换型、制冷启停规律、待机窗口
高耗能单体设备	空压机、泵与风机、熔炼与窑炉：负载率与空载功耗
多站点运营	同型号跨厂对比，把配置差异与操作习惯差异区分开

核心能力

按职能划分。厂区、区域与电价级别的能源计量由能耗管理系统负责；本应用细到单台设备。

Capability	What it means
Machine register	Record model, rated power, ideal cycle time, line and operation for each unit.
State detection	Determine state from machine signals where they exist, or from power behaviour and rules where they do not.
Configurable state definitions	Set what counts as producing, changeover, idle running, standby and off, per machine type and per unit.
Manual correction	Correct an inferred state by hand, with the correction recorded.
Output and good count	Take produced and good quantities from MES, from counters, or by confirmed entry.
Downtime reasons	Maintain reason codes and capture them, so downtime can be analysed rather than just totalled.
Availability	Time the machine was available against the time it was planned to run.
Performance	Output against the ideal cycle time for the time it ran.
Quality	Good parts against parts produced, with scrap and rework counted as loss.
Loss breakdown	Break the gap down to the losses that can be worked on, rather than a single effectiveness figure.
Ideal cycle configuration	Set ideal cycle time and standard rate per product and per machine.
By shift, order and product	Read the same figures by shift, by order and by product.
Energy per machine	Consumption recorded for the individual unit over any period.
Energy by state	What producing, changeover, idle running and standby each drew.
No-load and standby power	Identify what the machine draws while turning without output, and while waiting.
Start-up peaks	Show the draw when equipment starts, which is often where a large part of the cost sits.
单件良品能耗	Consumption divided by good parts, so quality and energy are consistent with each other.
Ranking across machines	Rank units of the same model and the same operation against each other.
Trends and drift	Show slow deterioration over time, which is what a single period rarely reveals.
Deviation alerts	Flag a machine drifting away from its own pattern or away from its peers.
Standby windows	Identify long periods at low power that could be off, and leave the decision to the plant.
Actions and re-measurement	Raise improvement actions, then measure the same machine on the same basis afterwards.
Two-way MES integration	从 MES 获取订单、产量、合格数与班次；将 OEE 与能耗结果回传给它。
Equipment and automation	Take state and counts from PLC, SCADA and gateways already installed, over the protocols the site uses.
部署方式选择	Run in the cloud or on your own servers, usually decided by where operational data may be processed and stored.
Access and retention	Role-based access per site and area, retention set by policy, with access and changes logged.

工作原理

登记。逐台记录：型号、额定功率、理想节拍、所在产线与工序。连接。消耗来自计量表或网关，状态来自机器信号或用电特征，产量与良品数来自 MES。定义状态。设定状态定义与阈值，从按机型提供的模板出发，再逐台调整。计算。OEE 三大项、按状态拆分的能耗、单位良品能耗。对比。同型号设备排序，观察趋势与漂移，识别待机窗口。行动与复测。发起改善措施，之后在同一口径下复测同一台设备，看是否真的改变了。

集成、部署与数据边界

Two-way with MES. Orders, output, good counts, shifts and state times come from MES, and OEE and energy results are returned to it, so effectiveness and energy appear in the same production view.
Equipment and automation. State and counts come from the PLC, SCADA and gateway layers already installed, over whatever protocols the site runs.
Metering. Consumption comes from the meters and gateways already in place. Whether to add more is a decision the plant makes once the data shows whether it is worth it.
How it divides the work with energy management. Energy Consumption Management works at the level of media, areas, orders and tariffs. This application works at the level of the individual machine and its OEE. Both share the same collection rather than building separate accounts.
What is local. 留存期限、设备数据访问权限及行业特定规则，取决于辖区和客户自身政策。配置据此设定；这些决策不由系统做出。