Scenario description:
In a Beijing project, the anti-reverse current solution is used for self-use. The SmartLogger detects the active power of the meter at the grid-tied point and controls the active output of the inverter in a closed-loop manner, preventing the inverter output power from being transmitted to the power grid and maximizing the inverter output power to the local load consumption.
Without DO control circuit breaker
Problem description:
After the Ancorre meter is connected to the SmartLogger
1. After a smart meter is added, multiply the current coefficient conversion ratio to obtain the running information of the smart meter in the SmartLogger. The phase current and active power secondary values cannot be multiplied by coefficients, resulting in a problem in reverse power closed-loop control.
2. In the running information, only the positive total active electricity and positive total reactive electricity values are multiplied by 800 coefficients.
3. Upgrade the SmartLogger software.
Solution:
1. The SmartLogger cannot use the current variation ratio. Modify the current coefficient variation ratio in the smart meter according to the Ancorre user manual.
2. Restore the current variation ratio of the power meter to the default value 1.
The following figure shows the normal configuration.
Summary: The voltage and current coefficient conversion ratio of the smart meter added to the SmartLogger1000A is irrelevant to the device software version. You need to directly configure the conversion ratio in the smart meter so that the meter can transmit the value once.
The SmartLogger2000 (V2) does not have this problem.
