随着特高压电网建设的进行，特高压变电站电气主接线对电网可靠性的影响变得越来越重要，因此，如何充分考虑其与电网的协调发展成为特高压变电站设计的一个关键问题。文章从不同的电网结构（单链式、单环网、网格状），变电站在电网中的不同位置（源端、受端、枢纽），以及特高压变电站接入区域500 kV电网的方式（点对网、网对网），综合分析主接线与电网之间的相互影响。基于分析结果给出了特高压变电站的协调设计原则，对选择特高压变电站的主接线方式有重要指导意义。

With the construction of UHV power grid, influences of bus arrangement systems applied in UHV substations on the reliability of the entire power grid have become more and more important. Therefore, the coordinated development between bus arrangement and power grid is a key to the design of UHV substations. This paper comprehensively analyzed the interplay between bus arrangement and power grid in terms of various network structures such as single-chain type, single-loop type and grid type; various locations of substations such as source end, receiving end and hub; and point-to-grid and point-to-point connection methods from UHV substations to the 500 kV power grid. Finally, design principles for UHV substations were proposed based on the analytical results, which is helpful to the selection of suitable bus arrangement systems for UHV substations.