Coordinated switching system and switching method of control right of multi-circuit direct current transmission system

Abstract

The invention discloses a loop control right coordination switching system of a multi-loop direct-current power transmission system. The loop control right coordination switching system of the multi-loop direct-current power transmission system comprises a background monitoring system, an inter-loop communication system and a loop control system of each loop. The background monitoring system is used for displaying the current loop control status of each loop and providing an operation interface and the corresponding interlocking information prompt for an operator, the inter-loop communication system achieves high-speed data transmission of control commands and status between the loops, and the loop control system of each loop is used for automatically calculating the number of loop-status characters according to the current control status of each loop and completing the switching of leading loops / non-leading loops. The system can achieve the loop control right coordination switching of the multi-loop direct-current power transmission system and ensure that a one-loop-direct-current loop control system which is more suitable for playing a role in controlling achieves the functions of multi-loop direct-current control mode coordination, power distribution of each loop, full-station reactive power control and the like from beginning to end. The invention further discloses a loop control right coordination switching method of the multi-loop direct-current power transmission system. The switching method comprises the steps of automatic switching and manual switching of the leading loops / non-leading loops.

Description

technical field [0001] The invention belongs to the field of direct current transmission, and in particular relates to a method for coordinated switching of return control rights of a multi-circuit direct current transmission system and a system for realizing coordinated switching control. Background technique [0002] Multi-circuit DC transmission system refers to a multi-circuit DC transmission system with a common sending end or a common receiving end. Compared with traditional single-circuit DC transmission, multi-circuit DC transmission has the advantages of saving line corridor resources, large transmission power, and flexible operation mode. [0003] Each circuit of the multi-circuit DC system can operate independently in the single-circuit mode, or can coordinate and operate in the multi-circuit mode at the same time. In the multi-circuit mode, the coordinated switching technology of the control systems of each circuit is very important. If it is not handled properly...

AI Technical Summary

Problems solved by technology

In the multi-circuit DC system, when it is in the multi-circuit operation mode, how to complete the switching control of the multi-circuit control right, at present, there are no experts and scholars at home and abroad to conduct in-depth research on this issue

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