Scoring provides a simple way to visualize and communicate which equipment and systems are performing better or worse than others. In addition to storing an overall Score, users can now set up a Per Rule Score using the FVO and Scoring tab in Rules to determine what that individual Rule’s score is for each equipment or system when the rule executes. This allows you to view the overall score for a piece of equipment or system as well as a per-rule score for that equipment.
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Overall Scores
With Building Optimization Broker's default scoring, each equipment or system starts with a score of 100%. As rules are evaluated, that score is decremented based on the priority of faults occurring on a piece of equipment or system. Low Priority faults impact an equipment or system's score less than a Medium or High Priority fault. See Creating a Custom Rule or Modifying a K2A Rule for information on setting priority for your Rules.
Here is a breakdown of how rule faults impact an equipment or system's score on their respective dashboard:
Fault Priority | Per Fault Decrement | Maximum Decrement |
|---|---|---|
Low | 5% | 25% |
Medium | 15% | 50% |
High | 50% | 100% |
Decrements are additive, however, there is a maximum value that Low and Medium faults can impact an equipment or system score.
Sample score calculations:
Chiller with a single Low Priority fault: 95%.
Chiller with a Low Priority fault and a High Priority fault: 45%.
Chiller with two High Priority faults: 0%.
Custom Rule Scoring
When creating a custom rule score, when you are creating/editing a rule, select the Scoring tab to use the Formula Value Output from the Formula tab to create scoring criteria. Each Rule will have the ability to impact the score or not. With custom rule scoring, you are setting the values for the 0 score and the 100 score. As the formula moves between the 0 score value and the 100 score value, the rule score will be calculated proportionally. This allows you to view the overall score for a piece of equipment or system as well as a per-rule score for that equipment/system. For detailed steps, see Creating a Custom Rule or Modifying a K2A Rule.
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Example 2: On the Scoring tab, I select a value of 80 degrees for a 0 score for the rule. I also select a value of 75 degrees for a 100 score for the rule. The Rule will then calculate a 0-100% score for itself as well as a decrement for the Overall score. If the temperature setpoint is 75 degrees, the score is 100%. Each fault decrement is 20% as there is a difference of 5 degrees. If the temperature is 76.5 degrees, the score is 50%.
Example 1: Decreasing Temperatures | Example 2: Increasing Temperatures | |||
|---|---|---|---|---|
Score | Value | Score | Value | |
100 | 75 | 100 | 75 | |
80 | 74 | 80 | 76 | |
60 | 73 | 60 | 77 | |
40 | 72 | 40 | 78 | |
20 | 71 | 20 | 79 | |
0 | 70 | 0 | 80 | |
50 | 72.5 | 50 | 76.5 | |
On the Dashboard, on the Equipment and/or System Dashboard, you can view the Per Rule Scoring on the line chart.
In Reporting, as you drill into your equipment and systems you will see scoring information about each rule that is configured for that equipment or system.