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Direct current emergency supply



summary


The emergency power supply on the DC side of the power station is an important component of the secondary power system, serving as the power supply for important equipment such as relay protection, safety automatic devices, and measurement and control systems. It is related to the operational safety of the entire substation and even related power grids. However, the key technical solutions and product equipment of the substation DC system have remained at the level of more than a decade ago, without significant development and innovation. Common faults such as grounding, insulation degradation, AC leakage, short circuit, ring network, battery failure, and fault line selection and positioning still plague the operation personnel of the DC power supply system in substations, posing a threat to the safe and stable operation of the entire power grid.


The emergency power supply system on the DC side of the power station solves problems such as grounding, insulation degradation, AC leakage, short circuit, ring network, battery failure, as well as fault line selection and positioning, fundamentally ensuring the safe operation of the DC power supply system in the substation.


















Industry application
The basic principle of photovoltaic power generation is "photovoltaic effect"". Photon irradiation to metal, its energy can be one electron of the metal absorption, electronic absorption energy is large enough,
can overcome the gravity acting within the metal, leaving the metal surface to escape, a photoelectron.

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