受端行为对直流输电系统的影响  

Influence of Operations of Receiving System on the DC Transmission System

作　　者：撖奥洋 张滨 孙忠良 王云鹏 韩学山[3] 李克强[3] HAN Aoyang;ZHANG Bin;SUN Zhongliang;WANG Yunpeng;HAN Xueshan;LI Keqiang(Dispatching Center of State Grid Qingdao Power Supply Company,Qingdao 266000,China;Jinan Power Supply Company,Jinan 250012,China;Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education(Shandong University),Jinan 250061,China)

机构地区：[1]国网青岛供电公司调控中心,青岛266000 [2]济南供电公司,济南250012 [3]电网智能化调度与控制教育部重点实验室(山东大学),济南250061

出　　处：《电力系统及其自动化学报》2017年第12期35-41,共7页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金资助项目(51177091,51477091);国家重点基础研究发展计划(973计划)资助项目(2013CB228205)

摘　　要：直流输电系统的运行不仅受自身控制参数的影响,也与受端系统的运行状态密不可分。在研究直流输电行为时,受端系统一般表示为戴维南参数等值形式,其数值取决于受端系统的负荷、补偿措施以及发电机的励磁系统。本文分析了单机受端系统在不同场景下直流输电变化,仿真结果表明,当负荷增大且发电机励磁系统达到励磁极限时,受端的支撑作用明显减弱,直流输电会不稳定,采用合适的补偿及调节可以提高系统的稳定性。The operation of DC transmission system is not only affected by its own control parameters,but also related to the operation condition of the receiving system.In the study of DC transmission behaviors,the receiving system is usually treated as a Thevenin equivalent model,and its parameters depend on the load,the compensation measures,and the excitation system of the generator.In this paper,the change of DC transmission in various scenes of the one-machine receiving system is analyzed.Simulation results show that with the increasing load and the excitation system reaching its limit,the supporting effect of the receiving system weakens obviously;the DC transmission becomes unstable,however,with proper compensation and regulation,the stability of the system can be improved.

关 键 词：直流输电 负荷波动 补偿电容 励磁系统 稳定性 

分 类 号：TM732[电气工程—电力系统及自动化]