Black-start method for roof light storage type wind power plant

Abstract

The invention discloses a black-start method for a roof light storage type wind power plant, which comprises the following steps of: after a sending line of the wind power plant is powered off, operating an energy storage system and a roof photovoltaic system to supply power to a 35kV bus of the wind power plant when the wind speed of the wind power plant, the energy storage system and the roof photovoltaic system meet starting conditions, and further recovering power supply of auxiliary equipment of a wind driven generator; adjusting the wind driven generator to a rated working state, recovering and sending out 220kV bus power supply, closing the grid-connected circuit breaker and the line circuit breaker, and therefore, charging of the power transmission line is achieved, the load on the opposite side of the power transmission line is driven to be started, and the energy storage system and the roof photovoltaic system are ingeniously operated to provide a starting power supply for the wind power generation system. Therefore, the black-start method has a black-start capability under the condition that the power supply sending-out system loses power, and black-start of the roof light storage type wind power plant is realized.

Description

technical field [0001] The invention belongs to the technical field of new energy black start, and in particular relates to a method for black start of a rooftop solar storage type wind farm. Background technique [0002] The black start of the power system is when the large-scale power outage of the power grid is caused by man-made, natural disasters or equipment failures, and without the help of an external power supply, the units with self-starting capabilities in the system are started to further drive the units without self-starting capabilities to start. , Gradually expand the scope of system recovery, try to restore the operation of the entire power grid and supply power to users in the shortest possible time, and minimize the loss of power outages. Since black start can quickly restore the collapsed power grid and minimize the loss caused by the collapse of the power grid, it is of great significance for the power grid to deal with serious accidents, and the power gr...

AI Technical Summary

Problems solved by technology

First of all, wind resources in some areas are discontinuous resources, which cannot guarantee continuous and sufficient wind energy in the necessary period. Its volatility and unsustainability are natural limitations. Field black start-up has wider promotion significance. The research on rooftop solar storage-assisted wind farm black start-up is a new research direction, which can provide reference experience for major power groups to carry out similar projects and improve the level and technology of black start-up in my country.

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