Can ConsumptionActivePower be negative?

stefan.feilmeier · November 1, 2020, 8:54pm

This is true, the Energy channels should continuously rise. This is an example from our InfluxDB/Grafana:

As Consumption is the sum of the other energy channels, the problem needs to be with one of them.

Calculation of Sum Consumption energy:

OpenEMS/openems/blob/develop/io.openems.edge.core/src/io/openems/edge/core/sum/SumImpl.java#L344-L349


		Long enterTheSystem = TypeUtils.sum(essActiveDischargeEnergySum, gridBuyActiveEnergySum,
				productionAcActiveEnergySum);
		Long leaveTheSystem = TypeUtils.sum(essActiveChargeEnergySum, gridSellActiveEnergySum,
				/* handling corner-case */ productionAcActiveEnergyNegative.calculate());
		this.energyValuesHandler.setValue(Sum.ChannelId.CONSUMPTION_ACTIVE_ENERGY,
				Optional.ofNullable(enterTheSystem).orElse(0L) - Optional.ofNullable(leaveTheSystem).orElse(0L));