阻容式直流分压器高压臂短路故障暂态特性仿真研究  

Simulation study on transient characteristics of short-circuit fault of high voltage arm of resistor-capacitor DC divider

作　　者：袁欣然 徐天奇 姜燕波 YUAN Xin-ran;XU Tian-qi;JIANG Yan-bo(The Key Laboratory of Cyber-Physical Power System of Yunnan Colleges and Universities,Yunnan Minzu University,Kunming 650000,China;China Energy Construction Group Yunnan Electric Power Design Institute Co.LTD,Kunming 650000,China)

机构地区：[1]云南民族大学云南省高校CPS融合系统重点实验室,云南昆明650000 [2]中国能源建设集团云南省电力设计院有限公司,云南昆明650000

出　　处：《云南民族大学学报（自然科学版）》2023年第1期90-95,共6页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：国家自然科学基金(61761049,62062068);云南省教育厅科学研究基金(2021Y662).

摘　　要：建立了三级高压臂的阻容式直流分压器数学模型及其高压臂短路模型,并对不同情况下阻容式直流分压器高压臂短路故障的暂态特性进行了仿真.仿真结果验证了数学模型的正确性,并发现高压臂短路故障会使分压器输出电压急剧升高,不利于工作人员对系统状态的判断.In the DC switching field of the converter station,the DC voltage measuring device needs to be installed on the DC pole bus.It is from time to time for the system faults caused by the short-circuit of the resistive-capacitive DC voltage divider components to occur in our country.Since this short-circuit fault often occurs in the high-voltage arm,cit is very important to be established for the more accurate simulation model of the resistance-capacitance DC voltage divider.And it is correct to be studied for the short-circuit fault of the high-voltage arm of the resistance-capacitance DC voltage divider.The mathematical model and short-circuit fault in the high-voltage arm model of the three-stage high-voltage arm of the resistance-capacitance DC voltage divider were established in this paper,and the transient characteristics of the short-circuit fault of the high-voltage arm of the resistance-capacitance DC voltage divider under different conditions were simulated.The simulation results verify the correctness of the mathematical model,and it is found that the short-circuit fault of the high voltage arm will make the output voltage of the voltage divider rise sharply,which is not conducive to the judgment of the system state.

关 键 词：高压直流输电 阻容式直流分压器 暂态特性 直流电压 

分 类 号：TM74[电气工程—电力系统及自动化]