Active power distribution network energy optimization method and device adopting power spring

Abstract

The invention provides an active power distribution network energy optimization method and device adopting a power spring. The method comprises the following steps: acquiring input data of an active power distribution network; wherein the input data of the active power distribution network comprise a non-critical load power factor; according to the non-critical load power factor, determining an active power adjustment range based on a power spring flexible load; inputting the active power distribution network input data and the active power adjustment range based on the power spring flexible load into a preset active power distribution network energy optimization model to generate an optimization output result; wherein the preset active power distribution network energy optimization model comprises a constraint condition based on a power spring flexible load. According to the method, the power spring is used as a load adjusting medium, the voltage quality of the active power distribution network is improved, the active power loss and the operation cost of the active power distribution network are reduced, the operation benefit of the micro-grid is improved, and the correctness and the effectiveness of active power distribution network capability optimization are greatly improved.

Description

technical field [0001] The invention relates to the technical field of energy optimization of active distribution networks, in particular to an energy optimization method and device for active distribution networks using electric springs. Background technique [0002] Electric Spring (Electric Spring, ES) is a power electronic device that connects ES in series with Non-critical Load (NCL) to form a series body, and then connects it in parallel with CL. The three form a power consumption group. There are two application modes: first, the voltage quality of the NCL is sacrificed to protect the critical load (CL); second, the ES receives instructions from the control center to adjust the power consumption of the NCL to respond to the current operating target. The series connection of ES and NCL is also called flexible load based on ES (FLES) to distinguish it from traditional flexible loads. The types of power springs include AC type, DC type and other types, which are essenti...

AI Technical Summary

Problems solved by technology

[0004] At present, the microgrid energy optimization model containing electric springs only shows the role played by electric springs in the context of microgrids for economic improvement and on-site consumption of renewable energy. The promotion of the role played is extended to the level of active distribution network, and only the active power balance in the microgrid is studied, and the voltage level is completely different from that of the active distribution network.

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