The performance of the smart grid energy storage system plays a crucial role in a power station. So how to measure the performance of an energy storage power station?

　　The energy storage energy test is designed to determine the energy stored by the energy storage system at rated electrical power.

　　The charge-discharge efficiency test is used to determine the ratio of the energy output by the energy storage system to the input energy during the previous charging process. That is, the discharge/charge capacity. The charge-discharge efficiency of the energy storage system should be calculated based on the test data after the charge-discharge cycle test is completed under 3 rated powers.

　　When the energy storage system is put into use, the actual energy size of the energy storage system is determined, and the energy changes of the energy storage system are collected at intervals to determine the energy stability of the energy storage system. According to the steps in the energy storage energy test, the rated energy Ws of the energy storage system and the energy storage energy Wn at the test time point are obtained.

　　The response time and ramp rate are used to determine the time required for the energy storage system to go from zero discharge power to rated discharge power stations for sale, or from zero charging power to rated charging power.

　　Measures the daily energy consumed by self-discharge and all other system components, such as the battery management system, energy management system, and other auxiliary loads required to prepare for operation, as a ratio of the initial measured energy

　　The daily self-discharge rate refers to the ratio of the energy lost by the energy storage system to the initial measured energy every day when the energy storage system and the load are kept in an open circuit state, except when the energy storage system enters a permanent out-of-operation state.