Patent ID: 11909216
Assignee: OPTIM (SHANGHAI) NEW ENERGY CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 3:
4. The signal measurement method for energy storage and frequency modulation system according to claim 3, wherein making conformity calculation for collected data with software in a background of the energy storage system, uploading the output to a RTU telemechanical apparatus of a power plant, wherein real time direct current output of the energy storage system is collected from the PCS by direct current measurement, and real time output of the power generator units is acquired by the current and the voltage measured by the CT and the PT devices of the second alternating current measurement units:

PG=UG*IG 

Real time output of the energy storage system is calculated with the current and the voltage measured by the CT and the PT devices in the first alternating current measurement units:

PESS=UESS*IESS 

An output difference between alternating current output and direct current output of the energy storage system is:

Pdif=PESS−PPCS 

Pdif is stored in the background of the energy storage system, and used for calculating loss of the energy storage step-up transformers, and reflecting problems existing with the energy storage step-up transformers by a variation amount of Pdif, and total output of the power generator units and the energy storage system is:

PSUM=PG+PESS 

Signals of the total output are uploaded to the RTU of the power plant, and transmitted to a power grid balancing system by the RTU to serve as signals to respond to the AGC frequency regulation instruction(s), and realize efficient monitoring and regulation of the total output of the entire system with the power grid balancing system.