[1]张焕青,张慕婕,王 裕,等.基于多目标性能优化的模块化多电平高频直流变压器 移相控制策略[J].高压电器,2019,55(09):18-25,33.[doi:10.13296/j.1001-1609.hva.2019.09.003]
 ZHANG Huanqing,ZHANG Mujie,WANG Yu,et al.Phase-shift Control Strategy of Modular Multilevel High-frequency DC Transformer Based on Multi-objective Performance Optimization[J].High Voltage Apparatus,2019,55(09):18-25,33.[doi:10.13296/j.1001-1609.hva.2019.09.003]
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基于多目标性能优化的模块化多电平高频直流变压器 移相控制策略()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年09期
页码:
18-25,33
栏目:
直流变压器专题
出版日期:
2019-09-30

文章信息/Info

Title:
Phase-shift Control Strategy of Modular Multilevel High-frequency DC Transformer Based on Multi-objective Performance Optimization
作者:
张焕青1 张慕婕2 王 裕3 唐 阳4
(1. 国家电网湖北省电力公司, 武汉 430077; 2. 国家电网公司华中分部, 武汉  430077; 3. 广东工业大学自动化学院, 广州 510006; 4. 三峡大学电气与新能源学院, 湖北 宜昌 443002)
Author(s):
ZHANG Huanqing1 ZHANG Mujie2 WANG Yu3 TANG Yang4
(1. Hubei Electric Power Company of State Grid, Wuhan 430077, China; 2. Central China Branch of State Grid, Wuhan 430077, China; 3. School of Automation, Guangdong University of Technology, Guangzhou 510006, China; 4. College of Electrical Engineering and New Energy, China Three Gorges University, Hubei Yichang 443002, China)
关键词:
直流电网 M2DCT DPS 多目标性能优化
Keywords:
DC gridsmodular multilevel DC transformer(M2DCT)dual-phase-shift (DPS) multi-objective performance optimization
DOI:
10.13296/j.1001-1609.hva.2019.09.003
摘要:
高频直流变压器(high-frequency DC transformer,HDCT)是直流电网的关键设备。 为了满足中高压直流电网母线互联、电压变换、功率双向传输和电气隔离的需求,两端皆为模 块化多电平变换器(modular multilevel converter, MMC)结构的模块化多电平高频直流变 压器(modular multilevel DC transformer,M2DCT)尤受关注。目前,移相控制是提高 M2DCT性能的有效方法之一,而现有的移相控制方法主要优化M2DCT的单一特性。因此,为了同 时降低电流应力,最小化功率损耗,改善软开关特性,实现M2DCT性能的多目标综合优化,提 出了一种基于多目标性能优化的双相移(dual-phase-shift,DPS)控制策略。建立M2DCT电流 应力,功率损耗和软开关特性的数学模型,提出多目标性能优化DPS的控制策略。通过M2DCT样 机实验结果,验证了所提策略的有效性和优越性。
Abstract:
The high-frequency DC transformers(DCTs) are important equipment in DC grids. To satisfy the requirements of buses connection, voltage conversion, bidirectional power transmission and electrical isolation in MVDC and HVDC grids, the modular multilevel DC transformer(M2DCT) with modular multilevel converter( MMC)topology is developed. Currently, the phase-shift control is one of the most effective ways to improve M2DCT performance. However, the existing phase-shift strategies mainly optimize a single characteristic of M2DCT. Therefore, to reduce current stress, minimize power loss and improve soft switching characteristics, achieving the comprehensive optimization for M2DCT, a multi-objective optimization control strategy based on dual-phase-shift(DPS) scheme is proposed in this paper. The mathematical model of current stress, power loss and soft- switching performers in M2DCT are established, and the control principle and framework of proposed multi-objective optimization DPS strategy is investigated. The experimental results in M2DCT prototype are presented to verify the correctness and effectiveness of the proposed strategy.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-07-11; 修回日期:2019-08-13张焕青(1963—),男,高级工程师,主要从事电力系统输变电设备的运维及检修、继电保护及 二次专业研究。 张慕婕(1993—),女,硕士,工程师,主要从事电力系统稳定及运行方式优化的研究。 王 裕(1984—),男,博士,特聘副教授,主要从事电力电子固态变压器、柔性直流输配电系 统的研究(通讯作者)。
更新日期/Last Update: 2019-09-10