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

Claim 2:
3. The signal measurement method for energy storage and frequency modulation system according to claim 1, wherein the energy management system further comprises one or more power generator units, one or more power plant high voltage transformers, one or more main transformers, an energy storage battery system and one or more energy storage step-up transformers, Energy storage direct current electricity is transformed to be alternating electricity, and integrated into a low voltage side of the power plant high voltage transformers by the energy storage step-up transformers, high voltage sides of the power plant high voltage transformers is connected with the power generator units and connected to a power grid by the main transformers, the power generator units are connected to low voltage sides of the main transformers with main enclosed busbars, measuring units provided for the energy storage battery system are one or more direct current measuring units and alternating current measuring units, the alternating current measuring units comprise one or more first alternating current measuring units and one or more second alternating current measurement units, and the second alternating current measurement units measure electrical signals such as current and voltage at outlets of the power generator units by one or more current transformers CT for collecting current signals and one or more potential transformers PT for collecting voltage signals; the first alternating current measurement units measure electrical signals such as current and voltage at outlets of the energy storage high voltage transformers by one or more current transformers CT for collecting current signals and one or more potential transformers PT for collecting voltage signals; and the direct current measurement units are connected with the PCS so as to receive direct current output from the energy storage system and upload the same to the energy management system.