Self-organization power flow controlling method of photovoltaic power generator set suitable for power distribution network

Abstract

The invention discloses a self-organization power flow controlling method of a photovoltaic power generator set suitable for a power distribution network. The self-organization power flow controlling method comprises the following steps: the photovoltaic power generator set is controlled; each photovoltaic power generator of the power distribution network is controlled through underlying controlling volumes and communication matrixes; the communication matrixes of a partial communication network are optimized to be complete sequences; the photovoltaic power generator set of the power distribution network is controlled through high-level controlling volumes. According to the invention, a plurality of photovoltaic power generators of the power distribution network can be stable and efficiently controlled under the condition of limit communication ability; active power outputted by the photovoltaic power generators is close to a set value; a system composed of the photovoltaic power generators can be improved in anti-interference; the self-organization power flow controlling method has the characteristic of redundancy in the time-variety and instantaneity of the partial communication network, and the smallest communication bandwidth can be realized.

Description

technical field [0001] The invention relates to a power flow control method of a photovoltaic generator set, in particular to a self-organized power flow control method of a photovoltaic generator set suitable for a distribution network. Background technique [0002] In recent years, the penetration rate of photovoltaic generators in the distribution network has gradually increased. However, the related stability and control problems make the connection of a large number of photovoltaic generators have a relatively large negative impact on the power system. In a distribution network with a high penetration rate of photovoltaic power generation and few energy storage devices, a sudden disturbance (such as a sudden change in illumination, etc.) will cause a rapid disconnection of the photovoltaic generator or a sudden drop in output power. It will cause the distribution network to lose active power support. The reduction of active power can cause problems such as voltage flu...

AI Technical Summary

Problems solved by technology

However, related stability and control issues make the connection of a large number of photovoltaic generators have a greater negative impact on the power system

In a distribution network with a high penetration rate of photovoltaic power generation and few energy storage devices, a sudden disturbance (such as a sudden change in illumination, etc.) will cause a rapid disconnection of the photovoltaic generator or a sudden drop in output power. Will cause the distribution network to lose active power support

The reduction of active power can cause many problems, such as voltage fluctuations, transient stability problems or voltage collapse, etc.

Images