Dynamic Load Control

What is dynamic load control

Enabling dynamic load control functionality with Teleport allows asset owners to dynamically control the amount of power that is fed back to the grid. In combination with an energy meter, Teleport can periodically read out the real-time active power consumed by the load locally as well as the amount of power generated by the solar installation. As the power fed back to the grid crosses the grid capacity threshold during peak periods, Teleport starts proportionally curtailing any excess power.

Dynamic load control allows asset owners to maximize and optimize the use of the available grid capacity. It allows them to dynamically reduce the output power of assets in periods of congestion, therefore, mitigating the imbalance costs incurred during such periods.

Required components

Teleport can talk to a large number of solar and metering assets. It periodically queries the active power at the point of connection (POC) and the amount of active power produced by the solar installation. By knowing the peak load and grid connection capacity, Teleport can quickly calculate the amount of access energy and subsequently control the solar generation by proportionaly curtailing the excess power.

Teleport Dynamic Load Control solution

Teleport works in a cascade control arrangement (as shown below) where the outer control loop consists of the energy measurement device (e.g. Janitza UMG 806) measuring voltage and current and setting curtailment setpoints of the PV system (e.g. via Sungrow Logger). The inner control loop of the PV system takes care of adjusting the maximum power point. The hardware solution satisfies the following requirements:

  • Voltage metering range L-N: 0 .. 230 Vrms
  • Voltage metering range L-L: 0 .. 400 Vrms
  • Current metering ranges: 1 up to 4000 A
  • Accuracy of the power measurement: margin of error <1% (of the nominal value, class 0.5s)

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