Parallel comprehensive treatment device for voltage problem of remote weak connection power grid and control method of parallel comprehensive treatment device

Abstract

The invention provides a parallel comprehensive treatment device aiming at a remote weak connection power grid voltage problem and a control method thereof, which take a communication module, a control system special module, a rectification inversion module and an energy storage battery module as a core, access each key node of a weak connection power grid zone area in a parallel mode aiming at a multi-branch radiation type architecture power supply scene, and realize comprehensive treatment of the voltage problem of the weak connection power grid. Through an optimal energy control strategy, normal node voltage is guaranteed, the power supply cost is reduced, the power utilization requirements of users in a low-voltage transformer area are met, the electric energy quality of a weak connection power grid in a remote area can be greatly improved, the power utilization reliability is improved, and the power utilization requirements of the users in different scenes are met; the problems of power shortage, power limitation and other electric energy quality pain points in a weak connection power grid at present are effectively solved.

Description

technical field [0001] The invention relates to the application field of energy storage technology, in particular to a parallel-type comprehensive control device and a control method thereof for remote weak-connected power grid voltage problems. Background technique [0002] The remote and weakly connected power grid is far away from the core area of ​​the distribution network, and generally has the characteristics of large power supply radius in the station area, long transmission lines, outdated equipment performance, low power reliability and poor power quality. Affected by the topography, there are a large number of single-radiating long-line low-voltage weak-connected power grids in rural areas, and the reliability of power supply is severe. In addition, due to the ubiquitous seasonal load and unbalanced load in rural power grids, the contradiction between residential electricity consumption and production electricity consumption is prominent, and the complaint rate of ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a parallel-type comprehensive treatment device and its control method for the voltage problem of remote weak-connected power grids, which solves the problems of low voltage and frequent voltage caused by insufficient active power transmission capacity commonly existing in remote weak-connected power grids. Power quality problems such as large-scale fluctuations

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