Distributed renewable energy grid-connected reactive power coordination processing method and device and terminal

Abstract

The invention relates to a reactive power coordination processing method and device under distributed renewable energy grid connection and a terminal, and belongs to the technical field of distributed renewable energy grid connection. For distributed renewable energy grid-connected nodes, a target node is determined from voltage overrun nodes, the total reactive power output of a power grid is obtained by using the voltage of the target node, and then when it is determined that reactive power output adjustment cannot be carried out only through a distributed renewable energy unit, the reactive power output adjustment is carried out only through the distributed renewable energy unit. Reactive power output distribution objects are determined as renewable energy source units and steady-state reactive power equipment of distributed renewable energy source grid-connected nodes, so that the distributed renewable energy source units and the steady-state reactive power equipment are enabled to participate in reactive power voltage regulation control of a distribution network in a coordinated manner, and the problems of wind curtailment and light curtailment during reactive power regulation are solved. And the distribution network can stably and economically absorb the distributed renewable energy sources.

Description

technical field [0001] The present application belongs to the technical field of grid-connected distributed renewable energy, and in particular relates to a reactive power coordination processing method, device and terminal under the grid-connected distributed renewable energy. Background technique [0002] Under the double test of urgent energy demand and serious environmental pollution, vigorous development and utilization of green and pollution-free renewable energy such as wind power and photovoltaics have been highly valued. Promoting the revolution of energy production and consumption and building a clean, low-carbon, safe and efficient energy system is a strategic choice to deal with challenges such as resource shortage, environmental pollution and climate change. The amount of distributed renewable energy access in the network is increasing day by day. [0003] The power supply and load in the traditional distribution network are stable, and the control strategy is ...

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Problems solved by technology

[0004] To this end, this application provides distribution network reconfiguration methods, devices and terminals for decentralized wind power grid-connected point voltage violations, which help to solve the problem of insufficient reactive power margin due to the limitations of distributed energy capacity, wind speed, illumination, etc. When it is exhausted, the active power adjustment mode is adopted, resulting in the phenomenon of "abandoning wind and light"

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