1FK6042-6AF71-1TH0模块备件

1FK6042-6AF71-1TH0

返回视在功率𝑺, 在被功率乘法器相乘之后（参见AV1162）。默认值
单位为kVA（见MSV163）。视在功率始终为正：
𝑺 = 𝑽 ∙ 𝑰
导入和导出平均值仅在相应的实际功率（见AI1600）间隔期间更新。
当实际功率仅在一个方向上流动时，其中一个将保持在0 kW。
当RMS电压无效（见AI1420）时，返回0 kVA，所有平均值停止
更新和范围下的可靠性返回。否则，可靠性遵循真实功率。
默认平滑值响应时间为2秒（参见AV164）。
AI1662平滑● AI1664小值● AI1666大值
AI1668总体平均值● AI1670进口平均值● AI1672出口平均值
AI1700总真实能量R/NV
ACC1700–ACC1706的全量程版本。默认单位为千瓦时（见MSV173）。
AI1702导入● AI1704出口● AI1706网络
AI1740总无功能量R/NV
ACC1740–ACC1742的全量程版本。默认单位为kVARh（请参阅MSV173）。
AI1742导入● AI1744出口
AI1760总视在能量R/NV
ACC1760–ACC1762的全量程版本。默认单位为kVAh（参见MSV173）。
AI1762导入● AI1764出口
AI1800需求真实功率R/W0/NV
返回平均值𝑷𝑫 在窗口间隔内的实际功率（见AI1600）。默认单位为：
千瓦（见MSV163）。负值表示出口能量超过进口能量
需求窗口的过程。
需求功率弥补了峰值功率和总能量积累之间的差距。多峰
功率测量是短暂的，可以由电力公司以小的成本吸收
影响。然而，持续的高功率使用需要固定容量投资，而不考虑成本
实际消耗（例如传输线）。一些公用事业公司向大客户收取费用
总能耗和峰值需求功率，尽管具体规则有所不同。
在内部，需求窗口以固定的间隔运行，每个新窗口都标志着需求的结束
上一个窗口。窗口时间（见AV183）设置大窗口长度和周期
同步（请参见MSV181）可以帮助将窗口的开头与外部引用对齐。
所有demand power对象都遵循相同的公共窗明细表。
n=0（仪表复位）1 2 3
瞬时功率
先前需求
4.
窗口平均
图14：固定需求窗口
EM-RS485 BACnet协议指南第26页共49页154-0022-0C
在每个窗口期间，需求持续跟踪线路中的能量流。当该值
在窗口结束时停止更改，它将成为以前的需求（见图14）。在
同时，小和大需求统计数据会随任何新记录更新。后
需求跟踪器为下一个窗口重置。需求窗口计数（见AV186）
每个需求窗口仅增加一次。
形式上，需求功率可定义为测量能量除以测量时间：
𝑷𝑫 = 𝚫𝐄
𝚫𝐭 = ∫ 𝑷 ∙ 𝑑𝑡 𝑡𝑛+1.
𝑡𝑛
𝑡𝑛+1.− 𝑡𝑛
尽管前面的语言描述了固定窗口，但主要需求功率
对象返回当前需求的连续平滑表示。该值平滑
随着每个窗口的发展，固定需求水平之间的转换（见图15）。虽然不是一个
代替真正的滑动窗口计算，这提供了更及时的变化视图
不等待间隔结束的请求。在完全同步模式下（请参见MSV181）
当前需求的行为未定义。
当前需求
n=0,1,2,3
瞬时功率
窗口平均
图15：当前需求平滑
如果过电压（见AI1420）或过电流（见AI1520），则可靠性返回超过范围
在窗口期间出现条件。然而，需求对象不跟踪可靠性。
每次重置后，仪表将恢复非易失性小和大需求统计数据。
当前需求立即可用，但之前的需求需要一个完整的
完全初始化的窗口间隔。
警告：将“停止服务”写入True将中断当前需求的计算。这
保留一个恒定值，以便在停用间隔期间进行检查和修改。
但是，如果将停用再次写入False，则现值可能会损坏。
此外，损坏的值可能会在当前事件结束时传播到派生的统计信息
窗应重置以这种方式损坏的任何需求统计数据（请参阅AV192）。
AI1802上一页● AI1804小值● AI1806大值
AI1840需求无功功率R/W0/NV
返回平均值𝑸𝑫 在窗口间隔内的无功功率（见AI1640）。默认单位
是kVAR（见MSV163）。负值表示主要为电容性负载（先功率因数）
在间隔的过程中。
AI1842上一页● AI1844小值● AI1846大值
AI1860需求视在功率R/W0/NV
返回平均值𝑺𝑫 在窗口间隔内的视在功率（见AI1660）。默认单位
单位为kVA（见MSV163）。
AI1862上一页

1FK6042-6AF71-1TH0

1FK6042-6AF71-1TH0

Returns apparent power 𝑺, after multiplication by the Power Multiplier (see AV1162). The default units are kVA (see MSV163). Apparent power is always positive: 𝑺 = 𝑽 ∙ 𝑰 The Import and Export Averages only update during the respective Real Power (see AI1600) intervals. When Real Power flows exclusively in one direction, one of these will remain at 0 kW. When the RMS Voltage becomes invalid (see AI1420), returns 0 kVA, all of the Averages stop updating, and Reliability returns Under Range. Otherwise, Reliability follows Real Power. The default smoothed value response time is 2 seconds (see AV164). AI1662 Smoothed ● AI1664 Minimum ● AI1666 Maximum AI1668 Overall Average ● AI1670 Import Average ● AI1672 Export Average AI1700 Total Real Energy R/NV Full range versions of ACC1700 – ACC1706. The default units are kWh (see MSV173). AI1702 Import ● AI1704 Export ● AI1706 Net AI1740 Total Reactive Energy R/NV Full range versions of ACC1740 – ACC1742. The default units are kVARh (see MSV173). AI1742 Import ● AI1744 Export AI1760 Total Apparent Energy R/NV Full range versions of ACC1760 – ACC1762. The default units are kVAh (see MSV173). AI1762 Import ● AI1764 Export AI1800 Demand Real Power R/W0/NV Returns the average 𝑷𝑫 of Real Power (see AI1600) over a windowed interval. The default units are kW (see MSV163). Negative values indicate that export energy exceeded import energy over the course of the demand window. Demand power bridges a gap between peak power and total energy accumulation. Many peak power measurements are short-lived and can be absorbed by an electrical utility with minimal side effects. However, sustained high power usage requires a fixed capacity investment regardless of the actual consumption (for example, transmission lines). Some utilities bill larger customers for both total energy consumption and peak demand power, although specific rules vary. Internally, demand windows run for a fixed interval, with each new window marking the end of the previous window. The Window Time (see AV183) sets the maximum window length, and periodic Synchronization (see MSV181) can help align the start of a window with an external reference. All of the demand power objects follow the same common window schedule. n=0 (meter reset) 1 2 3 Instantaneous Power Previous Demand 4 Window Average Figure 14: Fixed Demand Windows EM-RS485 BACnet Protocol Guide Page 26 of 49 154-0022-0C During each window, demand continuously tracks the flow of energy in the line. When this value stops changing at the end of the window, it becomes Previous Demand (see Figure 14). At the same time, the Minimum and Maximum Demand statistics update with any new record(s). Finally, the demand tracker resets for the next window. The Demand Window Count (see AV186) increments exactly once for each demand window. Formally, demand power may be defined as measured energy divided by the measurement time: 𝑷𝑫 = 𝚫𝐄 𝚫𝐭 = ∫ 𝑷 ∙ 𝑑𝑡 𝑡𝑛+1 𝑡𝑛 𝑡𝑛+1 − 𝑡𝑛 Notwithstanding previous language that describes a fixed window, the primary demand power object returns a continuously smoothed representation of Current Demand. This value smoothly transitions between the fixed demand levels as each window develops (see Figure 15). While not a substitute for a true sliding window calculation, this provides a more timely view of changing demand without waiting for the end of an interval. In Full Synchronization mode (see MSV181), the behavior of Current Demand is undefined. Current Demand n=0 1 2 3 Instantaneous Power Window Average Figure 15: Current Demand Smoothing Reliability returns Over Range if either the Over Voltage (see AI1420) or Over Current (see AI1520) conditions occur during the window. However, demand objects do not otherwise track reliability. After every reset, the meter restores the non-volatile Minimum and Maximum Demand statistics. The Current Demand becomes available immediately, but the Previous Demand requires one full window interval to fully initialize. WARNING: Writing Out Of Service to True will interrupt the calculation of Current Demand. This preserves a constant value for inspection and modification during the Out Of Service interval. However, on writing Out Of Service to False again, the Present Value may become corrupt. Additionally, the corrupt value may be propagated to derived statistics at the end of the current window. Any demand statistics corrupted in this way should be reset (see AV192). AI1802 Previous ● AI1804 Minimum ● AI1806 Maximum AI1840 Demand Reactive Power R/W0/NV Returns the average 𝑸𝑫 of Reactive Power (see AI1640) over a windowed interval. The default units are kVAR (see MSV163). Negative values indicate a primarily capacitive load (leading power factor) over the course of the interval. AI1842 Previous ● AI1844 Minimum ● AI1846 Maximum AI1860 Demand Apparent Power R/W0/NV Returns the average 𝑺𝑫 of Apparent Power (see AI1660) over a windowed interval. The default units are kVA (see MSV163). AI1862 Previous ● AI1864 Minimum ● AI1866 Maximum EM-RS485 BACnet Protocol Guide Page 27 of 49 154-0022-0C S Phase AI2000– AI2999 S Phase Analog Inputs parallel the R Phase, offset +1000. For example, read AI2600 for the S Phase Real Power. T Phase AI3000– AI3999 T Phase Analog Inputs parallel the R Phase, offset +2000. For example, read AI3600 for the T Phase Real Power.