Device special for low-voltage DC power distribution network

Abstract

The invention discloses a device special for a low-voltage DC power distribution network. The device comprises an energy storage power supply, a power generation device, a large power grid, a converter and a knife switch converter, wherein the energy storage power supply, the power generation device and the large power grid are all electrically connected to an intelligent control system, energy supply is integratedly provided by an energy management system, a DC-DC converter is connected to a DC bus by the energy storage power supply, the DC bus is connected with the power generation device and the large power grid by a DC-AC converter, and a converter is arranged between the knife switch converter and a load device. The device special for the low-voltage DC power distribution network is more intelligent during the process of dispatching integrated electricity; the device for providing energy for integrated running is independent, and the integrated running is not affected; and moreover, safety and guarantee are added into the process of low-voltage conversion, so that an accident is prevented, the operation of a worker is facilitated, and the integrated running is more smooth.

Description

technical field [0001] The invention relates to the related technical field of DC distribution network, in particular to a special device for low-voltage DC distribution network. Background technique [0002] At present, most of the distribution networks studied at home and abroad are AC networks, which have high requirements for the control of each distributed power supply, and require multiple inverters, resulting in a great waste of power electronic devices. In order to reduce the control requirements, maximize the use of distributed energy and save power electronic devices, the research of DC distribution network is of great significance. In addition, in the current power distribution network, too many people are involved in the role, and there is no high-intelligence autonomous regulation. Moreover, in the regulation process, power is needed, and the power itself does not have the resources to replenish energy, so there will be many The action is slow, and the distribu...

AI Technical Summary

Problems solved by technology

In addition, in the current power distribution network, too many people are involved in the role, and there is no high-intelligence autonomous regulation. Moreover, in the regulation process, power is needed, and the power itself does not have the resources to replenish energy, so there will be many The action is slow, and the distribution of direct current cannot be transmitted quickly for a long time, and the efficiency is too low

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