A reactive power control system and method for a high voltage direct current transmission system

Abstract

The invention relates to a reactive control system and method of a high-voltage DC power transmission system. A backup reactive control master station is arranged on a control layer, wherein the backup reactive control master station is located at the position same as a reactive control host system, is connected with a bipolar pole control system through a high-speed bus, forms a network together with a filter / capacitor measurement and control device through a bus and is used for achieving a backup active power adjustment function after a filter / capacitor trips and a filter / capacitor removal function of backup reactive control when voltage exceeds the limit. The reactive control system and method are simple to implement, an extra-high voltage DC power transmission system has a complete backup reactive control function, the risk of extra-high voltage DC outage is effectively avoided, the available rate of the system is improved, and meanwhile, enough maintenance time can be provided for operation and maintenance technicians.

Description

technical field [0001] The invention belongs to the technical field of ultra-high voltage / ultra-high voltage direct current transmission, and in particular relates to a reactive power control system and method of a high voltage direct current transmission system. Background technique [0002] With the successive commissioning of DC UHV / EHV projects, the stable operation of the UHV DC transmission system is becoming more and more important to the system stability of the entire power grid, which requires the control system to have a higher system availability. At present, there are two technical routes for the configuration of reactive power control in the UHV control system. One is independent configuration of reactive power control, and the other is that reactive power control is configured separately in the extreme control system. The two technical routes have their own advantages and disadvantages. The control system with independent configuration of reactive power control...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the backup reactive power control method is not perfect and cannot guarantee the normal operation of the system when all reactive power control hosts fail, the present invention proposes a reactive power control system and method for a high-voltage direct current transmission system

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