Load Control & Maximum Demand Systems

Electrical Demand, Load Shedding Control Systems

The ATLAS Load Control system enables the user to automatically control the energy use on a site to maintain the peak demand below an acceptable level. Equally usable for electricity or gas control, this system can operate on a total site load or a critical area as required by the user.

Load shedding / maximum demand system features;

• maximum demand control based on predicted demand of a centre selected from 'within' ATLAS Logger
• seperate load values for each of the eight load shedding control relays
• demand limit programmable for each half hour of each day [i.e. potentially 48 different values on 30 minute demand period, each day can be different]
• selectable shed sequence
• selectable restore sequence - First Load off/First Load restored, First Load off, Last Load restored, or Cyclic.
• Shed & restore hysterysis to account for load start up values etc
• End of period load restore/not restore selection

To provide this facility an additional Load Control Unit (LCU) is provided which interfaces with the ATLAS IV Logger that receives the consumption pulses from the site main incomer metering [or area metering if applicable].
The LCU is configured from the system PC with parameters to match the operating requirements of the site. Once programmed this LCU will operate using these parameters independent of the state of the PC. It is not essential that the PC be permanently linked to the LCU and it can be used for other tasks if required.
When linked to the LCU the data collected can be presented on the PC monitor in a live display featuring the 1/2hr profile so far in the day with a comparison between the required load profile and actual plus a statement of the status of LCU control relays at the last time of communication. Typically communication between PC and LCU will be set to take place once a minute thus providing a display update every minute.

Load shedding is provided by 8 relays in the LCU which can be set to operate precisely to match the load to which they are attached and with sequence selection and time delays to suit the user. Control will operate based on a comparison between a predicted demand calculated for a centre (this can be the sum of several logger meter inputs or an individual input) and the level set by the user.

For more details contact us on webinfo@newfound-energy.co.uk or see How to get in touch