2.5 Correlation Analysis

This feature supports the centralized display of different parameters from various nodes within the HVAC asset topology on a single graph. It also supports different presentation formats such as line charts, bar charts, and tables. The queried data can be exported to Excel with one click.

Key Notes:

1. Primary Parameters: Primary parameters include three categories: Efficiency, Consumption, and Key Parameters (from EdgeInput component).

   ① For nodes belonging to Water-Cooled, Ground Source Heat Pump, or Air Source Heat Pump energy station types, Efficiency and Cooling/Heating Output within Consumption are displayed based on metrics configured in the Energy Efficiency Indicator Management. Indicators not configured will not be shown.

   ② Key Parameters only display parameters from the corresponding node's EdgeInput component that have a custom property indicator with a value of 1, and do not have a display property, or whose display property value is not 'no'.

   ③ For other nodes, Primary Parameters only display Consumption and Parameters. If the corresponding node does not have a UsageAnalysis component, the "Consumption" category is not displayed. If a UsageAnalysis component is present, for components named EC, it is automatically identified and displayed as "Power Consumption"; for UsageAnalysis components with other attribute names, the corresponding attribute name is displayed directly (Component Instance Property -> Attribute Name).

   ④ Multiple Primary Parameters can be selected, or none at all.

2. Value Type: Supports four options: Average, Last, Maximum, Minimum.

3. Interval and Time Correspondence:

   ① Month – One data entry per month, default query shows the most recent 12 months' data, with a maximum query range of 3 years.

   ② Day – Default selection, one data entry per day, default query shows the most recent month's data, with a maximum query range of 24 months.

   ③ Hour – One data entry per hour, default query shows the most recent 7 days' data, with a maximum query range of 31 days.

   ④ 1 Minute – One data entry per minute, default query shows the most recent 24 hours' data (precise to minute), with a maximum query range of 72 hours (3 days).

   ⑤ 5 Minutes / 15 Minutes – One data entry per 5/15 minutes, default query shows the most recent 24 hours' data, with a maximum query range of 31 days.

   ⑥ Raw – Data is displayed at its original upload frequency. The query time range is unlimited, with a maximum of 10,000 data entries. The "Raw" option only appears and is selectable when the selected Primary Parameters consist only of the 【Parameters】 type or when only Correlated Parameters are selected.

   Note: Queries across different time zones simultaneously are not supported!!

4. Correlated Parameters:

   ① Correlated Parameters only list parameters from EdgeInput components and exclude parameters already present in the Primary Parameters selection.

   ② Parameters with a custom property display set to 'no' are not shown.

   ③ Multiple Correlated Parameters can be selected, or none at all.

5. For parameters from EdgeInput components, the parameter description is preferentially displayed. The parameter name is displayed only if no description exists.

6. A maximum of 8 parameters can be selected in total (Primary + Correlated Parameters).

7. Favorites Function: Click the star icon on the right to open a pop-up window where you can add, edit, delete, or view favorite groups. The Favorites function saves all filter conditions except for the time selection.