Power distribution network power supply power restoration method based on photovoltaic power generation system

Abstract

The invention discloses a power distribution network power supply power restoration method based on a photovoltaic power generation system, and the power distribution network power supply restoration method is characterized in that after a power grid is widely blacked out, and island division is conducted for a photovoltaic system, so that the non-fault blackout area is maximally powered on the premise of maintaining the power of important loads. The power distribution network power supply power restoration method comprises the steps of determining an after-failure photovoltaic power generation system island dividing scheme, and determining a segmental switch configuration position needing to be disconnected when the island dividing scheme is actuated; examining whether a failure branch downstream contains the photovoltaic power generation system or not after the failure happens, and switching the photovoltaic power generation system to be operated in an island form if the failure branch downstream contains the photovoltaic power generation system; finding a segmental position and a blackout area branch segmental switch position needing to be disconnected when the photovoltaic island is formed; adjusting the after-failure power distribution network structural information, searching a restorable route of a non-failure blackout area, determining the quantity of operable segmental switches and contact switches, and determining a basic particle vector; and solving a power distribution power restoration scheme of a non-failure blackout area outside the island according to a binary particle group optimization algorithm.

Description

【Technical field】 [0001] The invention relates to a method for restoring power supply of a power system, in particular to a method for restoring power supply of a distribution network based on a photovoltaic power generation system. 【Background technique】 [0002] Photovoltaic power generation system is a power generation system that uses solar cells to directly convert solar energy into electrical energy. This power generation system has the characteristics of high reliability, long service life, and no pollution to the environment. In actual application, the photovoltaic power generation system is usually directly connected to the power distribution system, and has two operation modes: grid-connected operation and island operation. The grid-connected operation mode refers to the operation in which the photovoltaic power generation system supplies power to the load together with the original system Mode; island operation mode refers to the operation mode in which the photov...

AI Technical Summary

Problems solved by technology

After the photovoltaic power generation system is connected to the grid, the distribution network structure and operation control method will undergo tremendous changes, and the formation of isolated islands will make the traditional distribution network power supply recovery algorithm no longer meet the new requirements

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