Automated fault detection and diagnostics in a building management system

摘要

Systems and methods for building automation system management are shown and described. The systems and methods relate to fault detection via abnormal energy monitoring and detection. The systems and methods also relate to control and fault detection methods for chillers. The systems and methods further relate to graphical user interfaces for use with fault detection features of a building automation system.

主权项

1. A controller for detecting energy usage faults in a building management system, the controller comprising:
a processing circuit configured to maintain a history of energy usage values for the building management system; wherein the processing circuit is configured to calculate a threshold parameter using a first subset of the history of energy usage values defined by a sliding time window, the threshold parameter establishing an energy usage value limit relative to the history of energy usage values; wherein the processing circuit is configured to identify energy outlier days by comparing energy use for a first day with the threshold parameter; wherein the processing circuit is configured to dynamically update the threshold parameter by sliding the time window forward in time to define a second subset of the history of energy usage values and using the second subset of the history of energy usage values to calculate an updated threshold parameter; wherein the processing circuit is configured to identify energy outlier days by comparing energy use for a second day with the updated threshold parameter.