Electric spring energy assimilation system

Abstract

The invention discloses an electric spring energy assimilation system. The invention improves the current electric spring structure to adapt to the grid structure of the same end with source and load.An alternating current side of a first single-phase inverter is connected in series with a wide voltage load. A direct current side of the first single-phase inverter is connected with a direct current bus through a bidirectional isolated power electronic transformer. New energy power generation equipment is assembled on the direct current bus, so that an isolated back-to-back structure of the same end with source and load is formed. Under a condition that the power generation power of a distributed new energy power supply is not affected, the alternating current bus voltage is regulated by the wide voltage load, the safe and reliable operation is achieved. An isolated power electronic transformer is arranged between the first single-phase inverter and the grid-connected converter to be isolated. The circuit can be protected, the control program is simplified, and the control of the direct current voltage of the first single-phase inverter is realized. Technical problem that in a weaknetwork environment at the same end with source and load, new energy assimilation is insufficient , which is very prone to occur a high voltage table problem and is hardly solved economically and effectively can be solved.

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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