Determine if there is no noticeable decrease in electrical load during unoccupied hours

Applicable Systems

  • All meters

Description / Method

Compares electrical consumption during occupied and unoccupied hours, and generates an insight if consumption during unoccupied hours over the week is not less than 50% of consumption during occupied hours.

Logic

Normalize all inputs to 5-minute samples. Over the week, separate consumption based on occupancy. Sum the occupied consumption. Sum the unoccupied consumption. Generate an insight when there is not enough reduction for unoccupied times.

Over week interval{
   if building occupied then sumOccupied
   if building unOccupied then sumUnOccupied
   }
If ( sumUnOccupied > sumOccupied* % reduction, insight,no_insight)
Determine if there is no noticeable decrease in electrical load during unoccupied hours
  1. Check if there are equipment in manual.
  2. Review and optimize sequence to include occupancy based control.

Message

Electrical consumption has not reduced during unoccupied hours. Please review equipment control.

Notes

All time spans and thresholds are adjustable.

Please note that this rule waits until the last day of the week before it generates the insight. This is done by using the Date Part block [block #15] – the sum of all days of the week is 21 and this condition is checked in the trigger block (Multiple Expression block 12).Default Values for Constants

  • Weekly Threshold: 50%

Rule Template Type

  • Insight Type: Energy
  • Trigger Type: Active High

Default Priority

  • High

Inputs

Inputs Units Tags Description
Electrical Consumption kWh,GJ,BTU energy, meter Equipment On/Off Indicator
Occupancy 0/1 occupied,schedule Actual temperature of water leaving the chiller

Constants

Inputs Units Default Value Description
Weekly Threshold % 50 Expected reduction in consumption during unoccupied times