Off-grid wind power supply system based on gird power complementation

Abstract

The invention provides an off-grid wind power supply system based on gird power complementation. A first part of the system comprises a wind driven generator, a fan controller, a main inverter, a storage battery group I, a storage battery group II and a double-power-supply conversion switch I which are mutually connected, wherein the double-power-supply conversion switch I is connected with a load, and power is supplied to the load through the double-power-supply conversion switch I; a second part comprises a storage battery group II, a storage battery group I, a grid-connected inverter and a charge-discharge control switch which are mutually connected, wherein the charge-discharge control switch is connected with a computer control unit; and a third part comprises a low-voltage grid, a double-power-supply conversion switch I, a double-power-supply conversion switch II and the computer control unit which are connected mutually. The off-grid wind power supply system has the benefits as follows: the capacity of the off-grid wind driven generator can be selected according to quantity of loads and characteristics of a wind field, and the 'one with multiple' distributed wind power supply system is constructed; the system and the low-voltage grid realize complementary double-power-supply for the loads; and wind energy resources are used for supplying power for the loads as far as possible, and the power utilization cost of an enterprise is effectively reduced.

Description

technical field [0001] The invention relates to an off-grid wind power supply system based on grid-power complementarity. Aiming at renewable energy utilization and continuous and reliable power supply of outdoor load equipment, the off-grid wind power and low-voltage grid power supply are combined to form a complementary load power supply system. It involves the development and utilization of renewable energy, power electronics and automatic detection technology and other fields. Background technique [0002] With the increasingly serious energy crisis and the gradual enhancement of people's awareness of environmental protection, the development and utilization of renewable energy has become a trend and hot spot in the world today, especially the development and utilization of wind power and solar power are more common. At present, not only the technology of wind power generation is relatively mature, but also the product specifications are relatively rich. The application ...

AI Technical Summary

Problems solved by technology

However, due to the random and seasonal instability of renewable energy, directly using off-grid power generation and independent power supply obviously cannot meet the power supply requirements of the load; In addition to the obvious increase, power generation is still connected to the grid for reuse

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