Power distribution network step-down energy-saving optimization method considering power spring

Abstract

The invention relates to the technical field of power distribution network energy saving, in particular to a power distribution network step-down energy-saving optimization method considering a power spring, which comprises the following steps: establishing a node admittance matrix and a power spring steady-state model of a power distribution network; constructing a corresponding first-stage optimization model and a corresponding second-stage optimization model based on the node admittance matrix and the power spring steady-state model of the power distribution network; the first-stage optimization model generates a scheduling strategy corresponding to discrete control equipment through load requirements in a rolling period and prediction data output by distributed power generation; and in the second stage, the optimization model optimizes and updates the set value of the power spring according to the load demand in the rolling period, the prediction data output by the distributed power generation and the scheduling strategy of the discrete control equipment, and generates the output reactive power of the power spring. According to the power distribution network voltage reduction and energy conservation optimization method, the voltage reduction and energy conservation adjustment response efficiency of the power distribution network can be improved, and the load on the demand side can change along with the generating capacity.

Description

technical field [0001] The invention relates to the technical field of energy-saving of distribution network, in particular to an optimization method for energy-saving of distribution network depressurization considering power springs. Background technique [0002] As the demand for electricity load gradually increases, the problem of world energy shortage is becoming more and more serious. At the same time, the rise in the price of natural gas and coal has greatly increased the cost of power generation in power plants, resulting in a shortage of power supply and a sharp rise in electricity prices. At this time, energy saving is an important means to alleviate this contradiction. Active distribution network step-down energy saving is a method for the distribution network to reduce the load voltage according to the load static voltage characteristics, while maintaining the load voltage within the allowable range, thereby reducing energy consumption. Many developed countries ...

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Problems solved by technology

However, the response speed of the discrete control device is slow, and the adjustment time is limited, so it is difficult to effectively deal with the fluctuation of renewable energy, resulting in a poor effect of voltage reduction and energy saving in the distribution network

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