Black-start method and system with multi-source coordination

Abstract

The invention provides a black-start method and system with multi-source coordination. According to the method, a diesel generator, a photovoltaic power station, an energy storage system and a wind power plant are taken as a starting power source in an orderly manner phase by phase, and black start of a regional power system is completed gradually. The starting process of the method comprises three phases: in the first phase, the diesel generator and the photovoltaic power station are taken as the starting power source for supplying power to an electric bus used for the wind power plant and charging the energy storage system; in the second phase, the diesel engine, the photovoltaic power station and the energy storage system are commonly taken as the starting power source, and all wind turbine generator sets in the wind power plant are started batch by batch; and after the wind power plant is started, there comes the third phase: the wind power plant, the energy storage system, the diesel generator and the photovoltaic power station are commonly taken as the power source, and a thermal power plant is started. The black-start method and system with multi-source coordination has the advantages of fast starting speed and stable operation, and truly and effectively reduce power grid recovery time.

Description

technical field [0001] The invention relates to the field of power grid black start, in particular to a multi-source coordinated black start method and system. Background technique [0002] Black start means that after the entire power grid system is out of service due to a fault, without relying on other network assistance, through the start-up of units with self-starting capability, also known as black start capability in the system, the units without self-starting ability are driven to gradually expand the power transmission of the system Scope, and ultimately achieve the recovery of the entire system. Different power systems restore in different ways, but the general goal is to restore the system to the ability to carry loads in the shortest possible time. [0003] The so-called black start scheme refers to the scheme to restore or reconstruct a new stable operation mode as soon as possible after an accident in the power system. There are generally three requirements f...

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Problems solved by technology

[0004] Due to the relatively late start of research on power system restoration in China, and because the specific conditions of each network area and each power grid are different, there is no and it is impossible to have a restoration plan that is widely applicable to different networks (operating modes and working conditions) , which urgently requires each power grid

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