Loss Analytic Calculation and Error Analysis for HVDC Converter

doi:10.11930/j.issn.1004-9649.202108111

Abstract

Abstract: The loss of modular multilevel converter (MMC) HVDC converter valve is not only an important performance and economic evaluation index of the system, but also the direct basis for the selection of converter valve power devices, junction temperature evaluation and cooling system design. The main converter valve loss are the conduction loss and switching loss of power devices such as IGBT and Diode, accounting for more than 90%. At present, there are a large number of research results on the loss calculation and optimization methods of MMC HVDC converter valve. Based on the existing analytical calculation methods, this paper obtains the general loss calculation expression covering the system working conditions and device characteristics through further accurate derivation. The influence factors associated with loss and their weights are extracted, which provides a basis for targeted loss optimization. Considering that the nearest level control strategy is adopted for the converter valve in practical engineering, the error sources of the analytical calculation method are analyzed, and a feasible and high precision loss calculation method based on waveform data of project site is proposed.

Key words: converter loss, analytic method, waveform method, loss influence factor

LI Biaojun, XIANG Quanzhou, YAO Chuantao, YU Qiong. Loss Analytic Calculation and Error Analysis for HVDC Converter[J]. Electric Power, 2022, 55(4): 78-84.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202108111

https://www.electricpower.com.cn/EN/Y2022/V55/I4/78

References

[1] 周孝信, 鲁宗相, 刘应梅, 等. 中国未来电网的发展模式和关键技术[J]. 中国电机工程学报, 2014, 34(29): 4999–5008
ZHOU Xiaoxin, LU Zongxiang, LIU Yingmei, et al. Development models and key technologies of future grid in China[J]. Proceedings of the CSEE, 2014, 34(29): 4999–5008
[2] 姚良忠, 吴婧, 王志冰, 等. 未来高压直流电网发展形态分析[J]. 中国电机工程学报, 2014, 34(34): 6007–6020
YAO Liangzhong, WU Jing, WANG Zhibing, et al. Pattern analysis of future HVDC grid development[J]. Proceedings of the CSEE, 2014, 34(34): 6007–6020
[3] 韦延方, 卫志农, 孙国强, 等. 一种新型的高压直流输电技术: MMC-HVDC[J]. 电力自动化设备, 2012, 32(7): 1–9
WEI Yanfang, WEI Zhinong, SUN Guoqiang, et al. New HVDC power transmission technology: MMC-HVDC[J]. Electric Power Automation Equipment, 2012, 32(7): 1–9
[4] 杨立敏, 王晖, 韩志勇, 等. 全桥型模块化多电平换流器损耗简化计算模型研究[J]. 电工电能新技术, 2019, 38(8): 53–62
YANG Limin, WANG Hui, HAN Zhiyong, et al. Research on simplified loss model of full-bridge modular multilevel converters[J]. Advanced Technology of Electrical Engineering and Energy, 2019, 38(8): 53–62
[5] 赵宇含, 王鑫, 赵成勇, 等. 半桥–全桥子模块混合型MMC的换流阀损耗分析方法[J]. 电网技术, 2021, 45(7): 2847–2856
ZHAO Yuhan, WANG Xin, ZHAO Chengyong, et al. Converter valve loss analysis based on half bridge-full bridge sub-module hybrid MMC[J]. Power System Technology, 2021, 45(7): 2847–2856
[6] 罗永捷, 宋勇辉, 熊小伏, 等. 高压大容量MMC换流阀损耗精确计算[J]. 中国电机工程学报, 2020, 40(23): 7730–7742
LUO Yongjie, SONG Yonghui, XIONG Xiaofu, et al. Accurate loss calculation method for bulk-power MMCs[J]. Proceedings of the CSEE, 2020, 40(23): 7730–7742
[7] 高剑剑. 基于结温预估的模块化多电平换流器损耗计算方法研究[D]. 北京: 华北电力大学(北京), 2018.
GAO Jianjian. Research on calculation method of modular multilevel converter loss based on junction temperature estimation[D]. Beijing: North China Electric Power University, 2018.
[8] 杨立敏, 朱艺颖, 孙栩, 等. 基于损耗分析的全桥型MMC参数优化设计[J]. 电力自动化设备, 2020, 40(3): 128–133
YANG Limin, ZHU Yiying, SUN Xu, et al. Optimization design of full bridge MMC parameters based on loss analysis[J]. Electric Power Automation Equipment, 2020, 40(3): 128–133
[9] 许彬, 李景波, 宁志彦, 等. 高压大容量MMC子模块下部IGBT损耗优化方法[J]. 电网技术, 2021, 45(10): 4025–4036
XU Bin, LI Jingbo, NING Zhiyan, et al. Loss optimization for bottom IGBT of submodule in high-voltage and large-capacity modular multilevel converter[J]. Power System Technology, 2021, 45(10): 4025–4036
[10] 丁红旗, 马伏军, 徐千鸣, 等. 模块化多电平换流器子模块IGBT损耗优化控制策略[J]. 电力系统自动化, 2021, 45(17): 143–152
DING Hongqi, MA Fujun, XU Qianming, et al. Loss optimization control strategy for IGBT in sub-module of modular multilevel converter[J]. Automation of Electric Power Systems, 2021, 45(17): 143–152
[11] 潘武略, 徐政, 张静, 等. 电压源换流器型直流输电换流器损耗分析[J]. 中国电机工程学报, 2008, 28(21): 7–14
PAN Wulue, XU Zheng, ZHANG Jing, et al. Dissipation analysis of VSC-HVDC converter[J]. Proceedings of the CSEE, 2008, 28(21): 7–14
[12] 薛英林, 徐政, 张哲任, 等. 采用不同子模块的MMC-HVDC阀损耗通用计算方法[J]. 电力自动化设备, 2015, 35(1): 20–29
XUE Yinglin, XU Zheng, ZHANG Zheren, et al. General method of valve loss calculation for MMC-HVDC with different submodules[J]. Electric Power Automation Equipment, 2015, 35(1): 20–29
[13] 张哲任, 徐政, 薛英林. 基于分段解析公式的MMC-HVDC阀损耗计算方法[J]. 电力系统自动化, 2013, 37(15): 109–116,151
ZHANG Zheren, XU Zheng, XUE Yinglin. Valve loss calculation of MMC-HVDC based on piecewise analytical formula[J]. Automation of Electric Power Systems, 2013, 37(15): 109–116,151
[14] 荣飞, 田新华, 饶宏, 等. 基于全桥MMC柔直换流阀损耗分析方法[J]. 高压电器, 2019, 55(1): 1–7,14
RONG Fei, TIAN Xinhua, RAO Hong, et al. Losses analysis method of flexible DC converter valve based on full bridge MMC[J]. High Voltage Apparatus, 2019, 55(1): 1–7,14
[15] 董玉斐, 杨贺雅, 李武华, 等. MMC中全桥子模块损耗分布优化的调制方法研究[J]. 中国电机工程学报, 2016, 36(7): 1900–1907
DONG Yufei, YANG Heya, LI Wuhua, et al. An optimal strategy for loss distribution of full-bridge submodules in modular multilevel converters[J]. Proceedings of the CSEE, 2016, 36(7): 1900–1907
[16] 谢晔源, 曹冬明, 姜田贵, 等. 基于模块化多电平换流器的新型全桥损耗优化调制策略[J]. 电力系统自动化, 2016, 40(6): 78–84
XIE Yeyuan, CAO Dongming, JIANG Tiangui, et al. A new full-bridge loss optimization modulating strategy based on modular multilevel converter[J]. Automation of Electric Power Systems, 2016, 40(6): 78–84
[17] 王希平, 李志刚, 姚芳. 模块化多电平换流阀IGBT器件功率损耗计算与结温探测[J]. 电工技术学报, 2019, 34(8): 1636–1646
WANG Xiping, LI Zhigang, YAO Fang. Power loss calculation and junction temperature detection of IGBT devices for modular multilevel valve[J]. Transactions of China Electrotechnical Society, 2019, 34(8): 1636–1646
[18] 黄勇, 姚志, 王容, 等. 基于结温预估的模块化多电平换流器损耗计算方法[J]. 电网技术, 2019, 43(11): 4115–4124
HUANG Yong, YAO Zhi, WANG Rong, et al. Calculation method of modular multilevel converter power loss based on junction temperature estimation[J]. Power System Technology, 2019, 43(11): 4115–4124
[19] 屠卿瑞, 徐政. 基于结温反馈方法的模块化多电平换流器型高压直流输电阀损耗评估[J]. 高电压技术, 2012, 38(6): 1506–1512
TU Qingrui, XU Zheng. Dissipation analysis of MMC-HVDC based on junction temperature feedback method[J]. High Voltage Engineering, 2012, 38(6): 1506–1512
[20] 李程昊, 谢竹君, 林卫星, 等. 中高频模块化多电平换流器阀损耗的精确计算方法与分析平台[J]. 中国电机工程学报, 2015, 35(17): 4361–4370
LI Chenghao, XIE Zhujun, LIN Weixing, et al. Accurate valve loss calculation method and analyzing platform for medium and high-frequency MMC[J]. Proceedings of the CSEE, 2015, 35(17): 4361–4370
[21] 周莹坤. 基于半桥子模块结构的模块化多电平换流阀损耗特性分析[D]. 北京: 华北电力大学, 2015.
ZHOU Yingkun. Loss analysis of modular multi-level converter based on half-bridge sub-modules[D]. Beijing: North China Electric Power University, 2015.
[22] 赵鹏豪, 许建中, 赵成勇, 等. MMC子模块拓扑搜索方法及其直流故障穿越能力定量评估[J]. 华北电力大学学报(自然科学版), 2016, 43(5): 14–21
ZHAO Penghao, XU Jianzhong, ZHAO Chengyong, et al. Quantitative evaluation on topology search strategy of sub-modules and DC fault ride-through capability of MMC[J]. Journal of North China Electric Power University (Natural Science Edition), 2016, 43(5): 14–21
[23] 徐坤山, 谢少军. 模块化多电平变换器基于钳位和能量转移电路的可直通子模块拓扑[J]. 电工技术学报, 2019, 34(8): 1657–1666
XU Kunshan, XIE Shaojun. Submodule with shoot-through ability for modular multilevel converters adopting clamping and energy transfer circuits[J]. Transactions of China Electrotechnical Society, 2019, 34(8): 1657–1666
[24] 易灵芝, 黄晓辉, 黄守道, 等. 基于最近电平逼近调制的模块化多电平变换器中高压变频调速系统运行控制[J]. 电工技术学报, 2020, 35(6): 1303–1315
YI Lingzhi, HUANG Xiaohui, HUANG Shoudao, et al. A medium-voltage motor drive with modular multilevel converter based on nearest level modulation[J]. Transactions of China Electrotechnical Society, 2020, 35(6): 1303–1315
[25] 刘追, 刘振兴, 李翠. 一种基于最近电平调制方式的MMC电压均衡改进方法[J]. 电测与仪表, 2017, 54(24): 87–93
LIU Zhui, LIU Zhenxing, LI Cui. An improved voltage balancing method based on MMC nearest level modulation[J]. Electrical Measurement & Instrumentation, 2017, 54(24): 87–93