多端直流输电系统主回路稳态参数计算  

Calculation of Main Circuit Steady State Parameters for MTDC Transmission System

作　　者：傅峡舟[1] 徐政[1] 易潇然 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027

出　　处：《电网技术》2015年第3期698-704,共7页Power System Technology

基　　金：国家863高技术基金项目(2011AA05A119)~~

摘　　要：基于两端直流输电技术的多端直流输电系统(multiterminal HVDC,MTDC)通过连接多个送端与多个受端,增大了单回直流线路的输送容量,在技术性和经济性上都具有很强的竞争力。主回路稳态参数计算是其系统设计的基础和重要环节。为此,首先分析了计算时需要考虑到的限制条件和直流系统运行方式。在此基础上,具体描述了主回路稳态参数计算的过程,并将其分为3个主要步骤:设定系统参数、稳态参数计算和无功校验。同时详细分析了每个步骤的计算方法。最后通过设计一个四端直流输电系统示例,验证了主回路稳态参数计算的有效性。By means of connecting with multi sending ends and multi receiving ends, the two-terminal HVDC transnaission technology based multi-terminal HVDC （MTDC） transmission system increases the transmission capability of single circuit HVDC transmission line, so MTDC transmission system possesses strong competitive power in both technology and economy. The calculation of steady-state parameter of its main circuit is the foundation and the important part of the design of MTDC transmission system. For this reason, firstly, the restrictive conditions and the operating modes of the HVDC system, which are to be considered during the calculation, are analyzed; secondly, on this basis, the calculation process of the main circuit steady-state parameters should be described concretely and divided into three main steps： the setting of system parameters, the calculation of steady-state parameters and the verification of reactive power, in the meanwhile the calculation method for each step is analyzed in depth; finally, the effectiveness of the steady-state parameter calculation for the main circuit is validated by the design of an exemplary four-terminal HVDC transmission system.

关 键 词：多端直流输电 两端直流输电技术 主回路 稳态参数 计算方法 

分 类 号：TM721[电气工程—电力系统及自动化] TM743