The application of energy storage is more extensive, not only related to
the power grid energy storage applications (frequency modulation, peak
regulation), distributed applications, household applications, but also can be
applied to some large power equipment, such as port tire crane, mining crusher,
smelting enterprises with slag truck, etc., are the lead carbon battery has a
great deal of place. The application scenarios of the power industry have the
following characteristics:
1. Instantaneous large current discharge reaches 300~350A;
2. In the case of incomplete charging, the system needs to be able to work
continuously and not stop halfway;
3. The working mode is uncertain, and sometimes, it is necessary to work
continuously for a long time (deep discharge) to have the opportunity to
charge.
Sometimes, only working for a short time can be charged (shallow discharge
depth);
4. The group voltage of the energy storage system reaches 560~750V;
5. There are a large number of frequency converters in the field condition,
and the electromagnetic compatibility environment is very poor;
6. Background monitoring, key lighting and air conditioning are not allowed
to outage, and the system needs to achieve uninterrupted switching between the
power grid and the energy storage system;
7. Due to the different system configurations of customers, it is necessary
to realize the uninterrupted switching of two HVDC channels in many
occasions;
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