Phase modifier configuration method of ultrahigh-voltage DC sender power grid

Abstract

The invention belongs to the technical field of power grid operation and control, in particular to a phase modifier configuration method of an ultrahigh-voltage (UHV) DC sender power grid. The methodspecifically relates to a phase modifier configuration method of a UHV DC sender power grid. The method includes the following steps: acquiring the operation parameters of a UHV DC sender power grid;determining the configuration number of phase modifiers; analyzing the reactive power and voltage sensitivity of the UHV DC sender power grid to obtain a primary set of phase modifier configuration positions; calculating out a phase modifier configuration strategy by using an artificial bee colony algorithm; and obtaining a phase modifier configuration strategy of the UHV DC sender power grid. Theconfiguration of phase modifiers in the UHV DC sender power grid can be realized more effectively, the voltage operation stability of the power grid can be improved, and a technical basis and a practical method are provided for the operation and control of the UHV DC sender power grid. With the increase of UHV AC / DC transmission systems, the development of reactive power optimal allocation strategies is bound to have greater demand and a good commercial development prospect.

Description

technical field [0001] The invention belongs to the technical field of power grid operation and control, and in particular relates to a method for configuring a condenser for an UHV DC sending-end power grid, in particular to a method for configuring a condenser for an UHV DC sending-end system grid. Background technique [0002] my country's primary energy and load are distributed in reverse. In order to meet the urgent needs of clean energy transmission, load center power supply, energy conservation and emission reduction, the State Grid has vigorously developed UHV AC and DC technologies suitable for long-distance and large-capacity transmission. The positioning of UHV AC and DC transmission projects and the long-distance and large-capacity transmission of large-scale energy bases have become the main ways to alleviate the contradiction between China's energy resources and economic layout. At present, my country is in the transition period of UHV power grid development. W...

AI Technical Summary

Problems solved by technology

However, with the implementation of the UHV DC project, the hazards of power frequency overvoltage control at the sending end, chain reaction at the receiving end grid, and commutation failure are gradually increasing. State output requirements, preventing commutation failure and fast large-capacity reactive power requirements in transient states, assisting DC to recover quickly, and insufficient response capability, while the phase advance capability, sub-transient output characteristics and strong excitation capabilities of the controller can just meet the requirements above requirements

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