Method for establishing multi-stage coordinated voltage control model

Abstract

The invention discloses a method for establishing a multi-stage coordinated voltage control model. The method comprises steps that the multi-stage coordinated voltage control model is made to be distributed on a plurality of time scales, the first stage is made to be a day-ahead two-stage robust optimization model with the uncertainty of a voltage control low load condition, the second stage is to decompose the proposed multi-stage coordinated voltage control model into a network optimization sub-problem and an energy management sub-problem, and the third stage is to redistribute a home energy management system (HEMS) to counteract the influence of real-time uncertainty so as to reduce the influence on the network voltage and carry out real-time adjustment; multi-stage coordinated voltage control is carried out on a low-voltage distribution network by coordinating residential demand response, and a problem that overvoltage is inevitably generated at a feeder line end due to high photovoltaic output when a load is low is solved; in addition, a dynamic consumption mode and a load composition of the user side cause the power consumption increase, the load variability and the demand predictability reduction, and thus higher voltage drop and loss are caused during the peak load period.

Description

technical field [0001] The invention belongs to the technical field of multi-level coordinated voltage control; in particular, it relates to a method for establishing a multi-level coordinated voltage control model. Background technique [0002] Global energy consumption has witnessed changing trends in consumption patterns and has soared to higher levels over the past few decades. At the same time, the construction industry has become an important energy consumption industry. According to reports, the construction industry consumes one-third of global final energy consumption and contributes 40% of global carbon emissions. Total delivered energy consumption in buildings is projected to increase by approximately 1.5% per year from 2012 to 2040. In addition, residential energy consumption is expected to grow to 13% of total global energy consumption by 2040, with electricity consumption in residential areas in particular continuing to grow from 39% in 2012 to 43% in 2040. ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for establishing a multi-level coordinated voltage control model, which realizes multi-level coordinated voltage control of low-voltage distribution networks through coordinated residential demand response, and solves the problem that high photovoltaic output will inevitably occur when the load is low. Overvoltage issues at the feeder end; moreover, dynamic consumption patterns and load composition at the customer end lead to increased power consumption, load variability, and reduced demand predictability, leading to technical issues such as higher voltage drops and losses during peak loads

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