New energy power grid phase modifier configuration method based on node comprehensive importance

Abstract

The invention provides a new energy power grid phase modifier configuration method based on node comprehensive importance, which is based on node comprehensive importance evaluation and considers the practical significance of electrical parameters on a power grid and the influence of a power grid structure on stable operation of the power grid at the same time. Importance indexes are respectively provided from two aspects of electrical parameters and a power grid structure, and comprehensive importance indexes of system nodes are defined; the identification problem of key elements in a power grid is effectively solved; and meanwhile, the function of the phase modifier as a reactive compensation device is exerted, and the capacity configuration of the phase modifier is realized by taking the minimum control cost as an optimization target, so that the voltage stability of a new energy power grid is improved.

Description

technical field [0001] The invention belongs to the technical field of power system operation and control, and in particular relates to a new energy grid controller configuration method based on the comprehensive importance of nodes. Background technique [0002] In the context of the depletion of traditional fossil energy sources, new energy power generation systems have become a major component of the power system. Compared with the traditional power supply, the new energy power supply is more obviously affected by the natural environment, and the output is significantly intermittent and uncertain; and the new energy power station relies on power electronic equipment to connect to the grid, and has low inertia, weak support, and low immunity. This brings challenges to grid operation control. As the penetration rate of new energy continues to increase, it is more difficult to control the security and stability of the power grid. With the rapid development of UHVDC transmi...

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Problems solved by technology

However, the installation position and capacity configuration of the condenser will directly affect the voltage control effect

The traditional method of location selection of condensers mostly considers the system strength of the busbar, and installs condensers at weak points to improve the speed of voltage recovery, but it will lead to excessive short-circuit current

Most of the configuration schemes for the condenser only consider the location or configuration capacity of the condenser, and do not comprehensively consider the location and capacity configuration of the condenser, and only partially solve the problem of reactive power compensation configuration optimization.

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