Capacity determination method and device of generato, computer equipment and storage medium

Abstract

The invention relates to a capacity determination method and device of a generator, computer equipment and a storage medium. The method comprises the following steps that: the computer equipment acquires a calculation load when a gas turbine unit is started, acquires an impact load when a maximum-capacity motor in the gas turbine unit is started according to the calculation load and a preset starting current multiple, and determines the capacity of a generator according to the size of the impact load. A variable-frequency starting device is connected with the gas turbine unit; therefore, the gas turbine unit can be started in a variable-frequency mode, the starting current multiple of the gas turbine unit is reduced, the impact load generated when the maximum-capacity motor in the gas turbine unit is started is reduced, the impact load resistance of the generator is further improved, the starting voltage drop of the gas turbine unit can be reduced, and smooth starting of a power grid is guaranteed.

Description

technical field [0001] The present application relates to the technical field of power supply, in particular to a method, device, computer equipment and storage medium for determining the capacity of a generator. Background technique [0002] In recent years, there have been large-scale power outages all over the world, and these major accidents have caused catastrophic social impacts and economic losses. When a large-scale power outage occurs, restoring the normal operation of the power grid in a short time can minimize economic losses. The black start function of the generator set in the power grid is of great significance to the power guarantee. [0003] For the generator set commonly used in the power grid, that is, the 9E gas turbine generator set (referred to as the 9E unit), there are currently two black start schemes. One is to use two high-speed diesel generators in parallel as the black start power supply of the 9E unit. [0004] However, in practical application...

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Problems solved by technology

[0004] However, in practical applications, when the load distribution of the two diesel generators is unbalanced, there will be a problem that the diesel generator’s anti-shock load capacity is insufficient, resulting in a large start-up voltage drop of the 9E unit, which eventually leads to the failure of the grid to start

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