An electric spring energy consumption system

Abstract

The invention discloses an electric spring energy consumption system. The present invention improves the current power spring structure to adapt to the power grid structure with the same source and load, and connects the AC side of the first single-phase inverter in series with the wide voltage load, and the DC side of the first single-phase inverter is isolated by two-way The type power electronic transformer is connected to the DC bus, and the new energy power generation device is collected on the DC bus, thereby forming an isolated back-to-back structure with the same source and load. Under the condition of not affecting the distributed new energy power generation power, the wide voltage load is used to regulate AC. Bus voltage, to achieve safe and reliable operation, an isolated power electronic transformer is set between the first single-phase inverter and the grid-connected converter for isolation, which can protect the circuit, simplify the control program, and realize the control of the first single-phase inverter The control of the DC voltage solves the technical problem that under the current weak network environment where the source and load are at the same end, the insufficient consumption of new energy is prone to high-voltage station problems and is difficult to solve economically and effectively.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to an electric spring energy consumption system. Background technique [0002] my country's distribution network construction has made great achievements, and a safe and reliable power distribution network has been realized in urban areas. However, in vast remote areas, due to complex geographical conditions and scattered loads, it is difficult for the distribution network to completely cover the loads, resulting in many feeder terminals with extremely weak connections to the main grid. [0003] Therefore, new energy distributed discharge equipment is now commonly used to solve the power supply problem in remote areas, forming a structure with the same source and load in these areas. When installing distributed power generation equipment, users need to input as much power as possible into the feeder from economic considerations, but there is not enough load to absorb the po...

AI Technical Summary

Problems solved by technology

[0007] The invention provides an electric spring energy consumption system, which solves the technical problem that under the current weak network environment where the source and load are at the same end, insufficient new energy consumption is prone to high-voltage station problems and is difficult to solve economically and effectively

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