基本信息:
- 专利标题： UNDER FREQUENCY/UNDER VOLTAGE DETECTION IN A DEMAND RESPONSE UNIT
- 专利标题（中）：在频率/欠电压检测下的需求响应单元
- 申请号：PCT/US2010028592 申请日：2010-03-25
- 公开(公告)号：WO2010111451A2 公开(公告)日：2010-09-30
- 发明人： FLECK CHRISTOPHER K
- 申请人： ACLARA POWER LINE SYSTEMS INC , FLECK CHRISTOPHER K
- 专利权人： ACLARA POWER LINE SYSTEMS INC,FLECK CHRISTOPHER K
- 当前专利权人： ACLARA POWER LINE SYSTEMS INC,FLECK CHRISTOPHER K
- 优先权： US16404909 2009-03-27
摘要：
A demand response unit (DRU) interposed between a utility's electrical power line (PL) and at least one load (L1-Ln) to which power is supplied by the utility over the line. A detector (Fdet or Vdet) measures a characteristic (frequency F, voltage V) of an electrical waveform (W) by which power is transmitted by the utility to the load. The detector (Fdet or Vdet) determines both when the measured frequency (F) or voltage (V) exceeds a predetermined threshold for a first predetermined period of time; and, if the threshold is exceeded, when the frequency (F) or voltage (V) exceeds the second predetermined threshold for a second predetermined period of time. For this purpose, the detector (Fdet or Vdet) processes a predetermined number of intervals of the waveform and produces an average value of the characteristic which is compared to the threshold. This is done to reduce the effect of extraneous events which may temporarily change the value of the frequency or voltage. A power control (PC) is responsive to an output from the detector to, at least, partially interrupt flow of power to the load during the period of time when the measured frequency or voltage exceeds the threshold, thereby to reduce the load on the utility.
摘要（中）：
一个在公用事业的电力线（PL）和至少一个负载（L1-Ln）之间插入电力的需求响应单元（DRU），该电力由该电力公司提供给该线路。 检测器（Fdet或Vdet）测量电力波形（W）的特性（频率F，电压V），电力通过该功率由电力公司向负载传输。 当测量频率（F）或电压（V）在第一预定时间段内超过预定阈值时，检测器（Fdet或Vdet）同时确定; 并且如果超过阈值，则当频率（F）或电压（V）在第二预定时间段内超过第二预定阈值时。 为此，检测器（Fdet或Vdet）处理预定数量的波形间隔，并产生与阈值进行比较的特性的平均值。 这样做是为了减少可能暂时改变频率或电压值的外来事件的影响。 功率控制（PC）响应于来自检测器的输出，至少在测量的频率或电压超过阈值的时间段期间至少部分地中断向负载的电力流动，从而减少对电力公司的负担 。