The sliding window is a period of time during which a maximum energy consumption must not be exceeded. This period has a fixed length, called the demand interval length, which always ends at the current time. A typical value for the user-specified demand interval length is 15 minutes.
For example, if the demand limit is 100 kW and a 15 minute sliding interval is defined, the maximum energy consumption within any 15 consecutive minutes must not exceed 25 kWh; however, there is no limitation to the maximum power that can be used at any given minute. Because every minute is also the beginning of a new sliding interval, the Sliding Window algorithm reacts every minute to prevent the demand from exceeding the demand limit.
For details on the attributes and advanced attributes that contribute to the Sliding Window algorithm logic, refer to the Metasys System Help (LIT-1201793).