Analysis method for researching regional interaction influence of wind-light-fire bundling delivery system

Abstract

The invention relates to an analysis method for researching the regional interaction influence of a wind-solar-fire bundling delivery system, and the method comprises the following steps: 1) constructing a wind-solar-fire bundling delivery system framework mode on the basis of a thermal power generating unit, a wind power generating unit, a photovoltaic power station and a high-voltage direct-current power transmission system model; 2) constructing a small-interference stability analysis linearization model of a delivery system according to the wind-light-fire bundling delivery system framework; 3) using characteristic value analysis and time domain simulation analysis to study the influence of the characteristic value analysis and the time domain simulation analysis on the system oscillation characteristic by changing the electrical distance between the power supplies of a sending-end system and the sending-out distance of the sending-end system; 4) changing the grid-connected capacity and the capacity ratio of wind, light and fire under a given operation condition, and analyzing the influence of different grid-connected capacities of wind, light and fire on the regional stabilityof the system; 5) changing the proportion of the AC / DC transmission power by changing a control current, and analyzing the oscillation modes of the system under different working conditions, therebyproviding a new idea for large-scale new energy consumption and delivery modes.

Description

technical field [0001] The invention belongs to the technical field of grid connection, and in particular relates to an analysis method for studying the regional interactive influence of a solar power bundling delivery system. Background technique [0002] With the rapid development of the world economy, energy consumption is accelerating, and the ensuing environmental pollution is becoming more and more serious. The development of renewable energy has become the main development trend of energy. [0003] Wind energy and solar energy are clean energy with the most abundant resources, the highest utilization efficiency and the most mature development technology. Wind energy and solar energy are mainly distributed in the Northeast, Northwest, and North China regions. The space for local energy consumption in these areas has become increasingly saturated, and energy urgently needs to be sent across regions. However, wind energy and solar energy are characterized by high volati...

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Problems solved by technology

[0004] However, the interaction mechanism between thermal power, wind power, photovoltaic and DC systems and its influence on the AC / DC transmission system are very complex, and the interaction between them has brought great potential threats to the stable operation of the interconnected power system. , to systematically study the stability characteristics of the AC / DC delivery system for wind, solar and thermal power bundles, which has extremely important theoretical and practical significance for the realization of my country's large-scale new energy consumption and the discussion of the delivery model

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