Optical configuration method of supergrid controllable phase shifter

Abstract

The invention relates to an optical configuration method of a supergrid controllable phase shifter. The optical configuration method of the supergrid controllable phase shifter comprises the following steps that firstly, a plurality of configuration schemes of the controllable phase shifter are generated; secondly, the rigid demand and the adaptability which exist after the controllable phase shifter is additionally arranged based on each candidate scheme are calculated according to the set supergrid load flow target; thirdly, the short-circuit current level, existing before the controllable phase shifter is additionally arranged according to each candidate scheme, of a supergrid is calculated, the short-circuit current level, existing after the controllable phase shifter is additionally arranged according to each candidate scheme, of the supergrid is calculated, the short-circuit current value, existing before the controllable phase shifter is additionally arranged, of the supergrid and the short-circuit current value, existing after the controllable phase shifter is additionally arranged, of the supergrid are compared, and whether the short-circuit current restraining effect of each candidate scheme can meet the design requirement is judged according to comparison results; fourthly, the quantity of line load flow variation caused by the change of each unit phase shifting angle after the controllable phase shifter is additionally arranged according to each candidate scheme is calculated; fifthly, the cost and investment of additional arrangement of the controllable phase shifter according to each candidate scheme are calculated; sixthly, according the controllable phase shifter configuration scheme which is output finally, the installation position of the controllable phase shifter is controlled. Compared with the prior art, the optical configuration method of the supergrid controllable phase shifter has the advantages of being capable of improving the delivery capacity of the supergrid and the access utilization ratio of the supergrid and the like.

Description

technical field [0001] The invention relates to the technical field of power flow optimization control of a power transmission network, in particular to an optimal configuration method for a controllable phase shifter in an ultra-high voltage power grid. Background technique [0002] For a long time, the power grid at the large receiving end has been blocked by the 500kV power grid caused by uneven power flow. Some lines are overloaded and some lines have insufficient utilization efficiency. Problems continue to emerge. Building a unified strong smart grid is a strategic goal proposed by the State Grid Corporation of China, and power flow control technology is an important part of it. The application of flexible AC transmission technology FACTS can realize the adjustment of power flow and short-circuit current, effectively excavate and improve the transmission and receiving capacity of the existing power grid, and reduce unnecessary investment in power grid construction. ...

AI Technical Summary

Problems solved by technology

[0002] For a long time, the power grid at the large receiving end has been blocked by the 500kV power grid caused by uneven power flow. Some lines are overloaded and some lines have insufficient utilization efficiency. Problems continue to emerge

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