HVDC换流变压器分接头控制系统建模与仿真

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英文篇名：Modeling and Simulation for Converter Transformer Tap Control System of HVDC 作者：宁晗 ; 方苇 ; 付玉婷 ; 朱添安 英文作者：NING Han;FANG Wei;FU Yuting;ZHU Tian′an;Maintenance Company of State Grid Hubei Electric Power Company;Yichang Power Supply Company of State Grid Hubei Electric Power Company; 关键词：高压直流输电 ; 换流变压器 ; 电磁暂态仿真 ; 实时数字仿真器 ; 分接头控制 英文关键词：HVDC;;converter transformer;;electromagnetic transient model;;real timedigital simulator;;tap control 中文刊名：NMDJ 英文刊名：Inner Mongolia Electric Power 机构：国网湖北省电力有限公司检修公司;国网湖北省电力有限公司宜昌供电公司; 出版日期：2019-06-14 15:07 出版单位：内蒙古电力技术 年：2019 期：v.37;No.191 语种：中文; 页：NMDJ201903012 页数：5 CN：03 ISSN：15-1200/TM 分类号：48-52

摘要

为准确分析高压直流输电控制系统稳态运行与暂态过程的特性,基于RTDS建立了电磁暂态仿真模型。整流侧采用反馈式变增益的定电流调节器,同时具有极功率控制和依电压指令限制等功能模块;逆变侧在考虑空载直流电压影响和点火角非线性控制设计的条件下使用电流调节器和最大点火角控制的组合控制模式。同时构建了与点火角控制相配合的两侧换流变压器分接头控制模块,包括理想空载直流电压、直流电压、触发角调节等功能。通过多工况及动态过程的仿真运行分析,结果表明所建模型能够模拟HVDC系统的Ud-Id特性。
        To analyze the response of control system for HVDC during steady-state operation and transient process accurately, an electromagnetic transient model of the actual control system is built based on the platform of RTDS. The rectifier side applies constant current regulator of variable gain, and pole power control/voltage dependent current order limiter. Under the condition of considering no-load DC voltage and nonlinear control design for firing angle, the combination of current regulator and alphamax inverter control is designed. At the same time, transformer tap control on both sides is constructed to match with control of firing angle, including some functions of regulating ideal no-load DC voltage and firing angle. By analysis of various running conditions and dynamic process,the results show that the model can simulate the characteristics of U_d-I_d for HVDC system.

引文

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