摘要
对直流输电的机电暂态仿真模型进行了深入研究。推导了适用于整流侧和逆变侧的换流器通用数学模型,分析了换相失败的判断方法,同时对逆变侧定关断角控制器的模拟方法进行了详细分析。在机电暂态仿真软件中搭建了含有直流输电详细模型的测试系统。为了深入分析直流输电机电暂态模型的精确度,以直流输电逆变侧不同程度的故障对比了机电暂态仿真结果与电磁暂态仿真结果。结果表明:机电暂态仿真计算是理想化的,它对换相失败临界点的判断与电磁暂态仿真存在偏差;在发生换相失败故障时,机电暂态模型响应曲线与电磁暂态模型基本一致,机电暂态模型的有效性得到了验证。
The DC transmission detailed model used in electromechanical transient simulations is studied in this paper. A general mathematical model for both the rectifier and the inverter is established,and the commutation failure criteria are analyzed. Meanwhile,the modeling method for the constant extinction angle control at the inverter side is analyzed in detail. A test system with a detailed model for HVDC transmission is established by electromechanical transient simulation software. In order to study the accuracy of the electromechanical transient model for HVDC transmission,the simulation results of electromechanical transient simulations and electromagnetic transient simulations are compared under faults of different degrees. The comparison results show that the electromechanical transient model for HVDC transmission is ideal and its critical point of commutation failure is different from that of electromagnetic transient simulation. The response waveforms of electromechanical transient simulation basically coincide with those of electromagnetic transient simulation after commutation failures,confirming the effectiveness of the electromechanical transient model for HVDC transmission.
作者
李威
牛拴保
吕亚洲
柯贤波
霍超
于洋
徐政
文一宇
刘楠
LI Wei;NIU Shuanbao;LYU Yazhou;KE Xianbo;HUO Chao;YU Yang;XU Zheng;WEN Yiyu;LIU Nan(NARI Technology Development Limited Company,Nanjing 211106,China;Northwest Subsection of State Grid Corporation of China,Xi＇ an 710048,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China;State Grid Chongqing Electric Power Company Electric Power Research Institute,Chongqing 400000,China;State Grid Baoding Electric Power Supply Company,Hebei Baoding 071000,China)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第8期155-160,共6页
High Voltage Apparatus
基金
国家电网公司西北分部科技项目~~
关键词
直流输电
详细模型
机电暂态仿真
电磁暂态仿真
换相失败
DC transmission
detailed model
electromechanical transient simulation
electromagnetic transient sim-ulation
commutation failure
