Harmonic Calculation Method of LCC-HVDC Transmission System Based on Switching Function

Chao HONG; Feng DAI; Dehui ZENG; Zhengrong WU; Wei WU; Gang WANG

doi:10.13648/j.cnki.issn1674-0629.2021.03.001

PDF(2824 KB)

South Power Sys Technol ›› 2021, Vol. 15 ›› Issue (3) : 1-7. DOI: 10.13648/j.cnki.issn1674-0629.2021.03.001

HVDC Transmission

Harmonic Calculation Method of LCC-HVDC Transmission System Based on Switching Function

Chao HONG ¹ ,
Feng DAI ² ,
Dehui ZENG ³ ,
Zhengrong WU ¹ ,
Wei WU ¹ ,
Gang WANG ²

Author information +

History +

Abstract

With the increase of power electronic equipment in the power grid, harmonics and their hazards gradually appear, and have drawn more and more attention. As converters are the main harmonic sources in DC transmission system, it seems particularly important to further analyze them on harmonics. Taking the line commutated converter high voltage direct current (LCC-HVDC) system as the objective, the paper uses an harmonic calculation model based on the switching function to analyze characteristic harmonics. Firs-tly, based on the modulation theory, AC-DC harmonic calculation equations considering the switching function are established, while the switching functions of voltage and current are solved based on the working principle of the converter. Then the equivalent harmonic impedance model of DC system is obtained by structure analysis of DC system. Based on the above analysis and flow analysis on the AC side, the harmonic equations are solved to obtain the LCC characteristic harmonics of AC and DC sides. Finally, by comparing with the PSCAD simulation model, the feasible and accurate of harmonic calculation method are verified. The paper can provide theoretical basis and method reference for power system harmonic analysis, harmonic suppression and so on.

Key words

harmonic / LCC / switching function / modulation theory / equivalent harmonic impedance

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Chao HONG , Feng DAI , Dehui ZENG , et al . Harmonic Calculation Method of LCC-HVDC Transmission System Based on Switching Function[J]. Southern Power System Technology. 2021, 15(3): 1-7 https://doi.org/10.13648/j.cnki.issn1674-0629.2021.03.001

References

List( Publishing order | Descend order by publishing year | Descend order by cited within ) Chart analysis

[1]	郑超, 莫品豪, 文继锋, 等. 直流滤波器高压电容器接地故障保护判据和方案[J]. 电力系统自动化, 2018, 42(1): 132-137. ZHENG Chao, MO Pinhao, WEN Jifeng, et al. Criterion and scheme for high-voltage capacitor earth fault protection of DC filter[J]. Automation of Electric Power Systems, 2018, 42(1): 132-137. Cited in this article [1]

[2]

戴仲覆, 洪潮, 杨健, 等. 新松—东方±800 kV特高压直流工程运行初期输电能力受限问题及对策[J]. 南方电网技术, 2019, 13(1): 1-6.

DAI

Zhongfu

, HONG

Chao

, YANG

Jian

, et al. Transmission capability problem and countermeasures during early operation period of Xinsong—Dongfang UHVDC project[J]. Southern Power System Technology, 2019, 13(1): 1-6.

Cited in this article [1]

[3]	XUE Y, ZHANG X P, YANG C H. AC filterless flexible LCC HVDC with reduced voltage rating of controllable capacitors[J]. IEEE Transactions on Power Systems, 2018, 33(5): 5507-5518. Cited in this article [1]

[4]	YAMASHITA K, KAMEDA Y, NISHIKATA S. A harmonics elimination method using a three-winding transformer for HVDC transmission systems[J]. IEEE Transactions on Industry Applications, 2018, 54(2): 1645-1651. Cited in this article [1]

[5]	谢小荣, 刘华坤, 贺静波, 等. 电力系统新型振荡问题浅析[J]. 中国电机工程学报, 2018, 38(10): 2821-2828, 3133. XIE Xiaorong, LIU Huakun, HE Jingbo, et al. On new oscillation issues of power systems[J]. Proceedings of the CSEE, 2018, 38(10): 2821-2828, 3133. Cited in this article [1]

[6]	郭琦, 郭海平, 黄立滨. 电网电压前馈对柔性直流输电在弱电网下的稳定性影响[J]. 电力系统自动化, 2018, 42(14): 139-144. GUO Qi, GUO Haiping, HUANG Libin. Effect of grid voltage feedforward on VSC-HVDC stability in weak power grid[J]. Automation of Electric Power Systems, 2018, 42(14): 139-144. Cited in this article [1]

[7]	周国伟, 顾用地, 周建平, 等. 特高压直流输电系统非特征谐波分析[J]. 电力系统保护与控制, 2016, 44(3): 122-128. ZHOU Guowei, GU Yongdi, ZHOU Jianping, et al. Analysis of non-characteristic harmonic in UHVDC system[J]. Power System Protection and Control, 2016, 44(3): 122-128. Cited in this article [1]

[8]	曾垂杨. 基于ATP-EMTP的大电网电磁暂态仿真及等值研究[D]. 西安: 西安科技大学, 2018. Cited in this article [1]

[9]	戚庆茹, 焦连伟, 严正, 等. 高压直流输电动态相量建模与仿真[J]. 中国电机工程学报, 2003, 23(12): 31-35. QI Qingru, JIAO Lianwei, YAN Zheng, et al. Modeling and simulation of HVDC with dynamic phasors[J]. Proceedings of the CSEE, 2003, 23(12): 28-32. Cited in this article [1]

[10]	夏黄蓉, 韩民晓, 姚蜀军, 等. 模块化多电平换流器动态相量建模[J]. 电工技术学报, 2015, 30(S2): 120-127. XIA Huangrong, HAN Minxiao, YAO Shujun, et al. Dynamic phasor modeling of simplified modular multilevel converter[J]. Transactions of China Electrotechnical Society, 2015, 30(S2): 120-127. Cited in this article [1]

[11]	ZHU H J, CAI Z X, LIU H M, et al. Hybrid model transient stability simulation using dynamic phasors based HVDC system model[J]. Electric Power System Research, 2006, 76(6): 582-591. Cited in this article [1]

[12]	孔维波, 文俊, 王玲, 等. HVDC换流器交流等值谐波阻抗研究[J]. 华北电力大学学报, 2017, 44(4): 37-43. KONG Weibo, WEN Jun, WANG Ling, et al. Study on AC-side equivalent harmonic impedances of HVDC converter[J]. Journal of North China Electric Power University, 2017, 44(4): 37-43. Cited in this article [1]

[13]	周国伟, 顾用地, 周建平, 等. 特高压直流输电系统非特征谐波分析[J]. 电力系统保护与控制, 2016, 44(3): 122-128. ZHOU Guowei, GU Yongdi, ZHOU Jianping, et al. Analysis of non-characteristic harmonic in UHVDC system[J]. Power System Protection and Control, 2016, 44(3): 122-128. Cited in this article [1]

[14]	刘俊磊, 钱峰, 王超, 等. 基于粒子群优化算法的交流不对称故障下HVDC谐波计算[J]. 陕西电力, 2014, 42(12): 1-5. LIU Junlei, QIAN Feng, WANG Chao, et al. Particle swarm optimization based HVDC harmonic calculation under asymmetric faults in AC system[J]. Shaanxi Electric Power, 2014, 42(12): 1-5. Cited in this article [1]

[15]

陈相, 刘天琪, 王顺亮, 等. 多桥换流器高压直流输电送端谐波不稳定分析与抑制[J]. 电力系统自动化, 2017, 41(18): 46-52.

CHEN

Xiang

, LIU

Tianqi

, WANG

Shunliang

, et al. Analysis and suppression of harmonic instability for multi-bridge converter based HVDC system[J]. Automation of Electric Power Systems, 2017, 41(18): 46-52.

Cited in this article [2]

[16]	李盛兴. 多馈入直流输电系统建模及故障分析[D]. 长沙: 湖南大学, 2016. Cited in this article [2]

[17]	孔维波. MIDC系统谐波特性的研究[D]. 北京: 华北电力大学, 2017. Cited in this article [2]

[18]	The Institute of Electrical and Electronics Engineers. IEEE guide for the analysis and definition of DC-side harmonic performance of HVDC transmission systems: IEEE Std1124-2003[S]. New York: IEEE, 2003. Cited in this article [1]

[19]	HONG Chao. Improving fault recovery performance of an HVDC link with a weak receiving AC system by optimization of DC controls[C]// 2018 International Conference on Power System Technology (POWERCON), November 6-8, 2018, Guangzhou, China: 4474-4479. Cited in this article [1]

[20]	马玉龙, 肖湘宁, 姜旭. 交流系统接地故障对HVDC的影响分析[J]. 中国电机工程学报, 2006, 26(11): 144-149. MA Yulong, XIAO Xiangning, JIANG Xu. Analysis of the impact of AC system single-phase earth fault on HVDC[J]. Proceedings of the CSEE, 2006, 26(11): 144-149. Cited in this article [1]

[21]	HU L, RAN L. Direct method for calculation of AC side harmonics and interharmonics in an HVDC system[J]. IEE Proceedings Generation, Transmission and Distribution, 2000, 147(6): 329-335. Cited in this article [3]