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混合多端直流输电系统保护方法研究
Yuping Zheng, Jiawei He, Bin Li, Tonghua Wu, Wei Dai, Ye Li
工程（英文） ›› 2021, Vol. 7 ›› Issue (8) : 1064-1075.
PDF(3022 KB)
PDF(3022 KB)
混合多端直流输电系统保护方法研究
Research on DC Protection Strategy in Multi-Terminal Hybrid HVDC System
近年来，混合多端直流输电系统快速发展。但是，在混合直流系统中应用的电压源换流器（voltage-source converter, VSC）出口不再需要直流滤波器。此外，考虑到其直流故障电流可被换流器自身有效抑制，直流线路两端也不再需要安装限流电抗器。这意味着线路两端边界缺失，导致应用于常规高压直流输电（line commutated converter based high-voltage direct current, LCC-HVDC）系统和柔性直流（VSC-HVDC）电网的单端量保护均无法适用于混合多端直流输电系统。为此，本文提出了一种适用于混合多端直流输电系统的单端量保护新原理，该方法主要基于暂态信息和主动注入思想实现故障辨识。与应用于LCCHVDC和VSC-HVDC系统的单端量保护相比，所提方法无需依赖线路两端的边界元件，因此更加适用于混合多端直流系统。大量的仿真算例充分验证了所提方法的可行性和优越性。
Multi-terminal hybrid high-voltage direct current (HVDC) systems have been developed quickly in recent years in power transmission area. However, for voltage-source converter (VSC) stations in hybrid HVDC systems, no direct current (DC) filters are required. In addition, the DC reactor is also not installed at the line end because the DC fault can be limited by the converter itself. This means that the boundary element at the line end is absent, and the single-ended protections used in line commutated converter based HVDC (LCC-HVDC) systems or VSC-HVDC systems cannot distinguish the fault line in multi-terminal hybrid HVDC systems. This paper proposes a novel single-ended DC protection strategy suitable for the multi-terminal hybrid HVDC system, which mainly applies the transient information and active injection concept to detect and distinguish the fault line. Compared with the single-ended protections used in LCC-HVDC and VSC-HVDC systems, the proposed protection strategy is not dependent on the line boundary element and is thus suitable for the multi-terminal hybrid HVDC system. The corresponding simulation cases based on power systems computer aided design (PSCAD)/electromagnetic transients including DC (EMTDC) are carried out to verify the superiority of the proposed protection.
混合多端直流输电系统 / 单端量保护 / 暂态量信息 / 主动注入
Multi-terminal hybrid HVDC system / Single-ended protection / Transient information / Active injection
| [1] |
Kalair A, Abas N, Khan N. Comparative study of HVAC and HVDC transmission systems. Renew Sustain Energy Rev 2016;59:1653–75.
|
| [2] |
Ooi BT, Wang X. Boost-type PWM HVDC transmission system. IEEE Trans Power Deliv 1991;6(4):1557–63.
|
| [3] |
Teeuwsen SP, editor. Modeling the Trans Bay cable project as voltage-sourced converter with modular multilevel converter design. In: Proceedings of the IEEE Power and Energy Society General Meeting; 2011 Jul 24–28; Detroit, MI, USA. New York: IEEE; 2011. p. 1–8.
|
| [4] |
Haleem NM, Rajapakse AD, Gole AM, Fernando IT. Investigation of fault ridethrough capability of hybrid VSC-LCC multi-terminal HVDC transmission systems. IEEE Trans Power Deliv 2019;34(1):241–50.
|
| [5] |
Wang Y, Zhao W, Yang J, Wang N, Lu Y, Li H. Hybrid high-voltage direct current transmission technology and its development analysis. Autom Electr Power Syst 2017;41(7):156–167. Chinese.
|
| [6] |
Wu J, Li H, Wang G, Liang Y. An improved traveling-wave protection scheme for LCC-HVDC transmission lines. IEEE Trans Power Deliv 2017;32(1):106–16.
|
| [7] |
Ma Y, Li H, Wang G, Wu J. Fault analysis and traveling-wave-based protection scheme for double-circuit LCC-HVDC transmission lines with shared towers. IEEE Trans Power Deliv 2018;33(3):1479–88.
|
| [8] |
Li B, Li Ye, He J, Wen W. A novel single-ended transient-voltage-based protection strategy for flexible DC grid. IEEE Trans Power Deliv 2019;34 (5):1925–37.
|
| [9] |
De Kerf K, Srivastava K, Reza M, Bekaert D, Cole S, Van Hertem D, et al. Wavelet-based protection strategy for DC faults in multi-terminal VSC HVDC systems. IET Gener Transm Distrib 2011;5(4):496–503.
|
| [10] |
Liu J, Tai N, Fan C. Transient-voltage-based protection scheme for DC line faults in the multiterminal VSC-HVDC system. IEEE Trans Power Deliv 2017;32 (3):1483–94.
|
| [11] |
Xiang W, Yang S, Xu L, Zhang J, Lin W, Wen J. A transient voltage-based DC fault line protection scheme for MMC-based DC grid embedding DC breakers. IEEE Trans Power Deliv 2019;34(1):334–45.
|
| [12] |
Guo C, Liu B, Zhao C. A DC chopper topology to mitigate commutation failure of line commutated converter based high voltage direct current transmission. J Mod Power Syst Clean Energy 2020;8(2):345–55.
|
| [13] |
Rao H, Hong C, Zhou B, Huang D, Xu S, Yao W, et al. Study on improvement of VSC-HVDC at inverter side of Wudongde multi-terminal UHVDC for the problem of centralized multi-Infeed HVDC. South Power Syst Technol 2017;11 (3):1–5. Chinese.
|
| [14] |
Petino C, Heidemann M, Eichhoff D, Stumpe M, Spahic E, Schettler F. Application of multilevel full bridge converters in HVDC multiterminal systems. IET Power Electron 2016;9(2):297–304.
|
| [15] |
Zhang J, Zhao C. The research of SM topology with DC fault tolerance in MMCHVDC. IEEE Trans Power Deliv 2015;30(3):1561–8.
|
| [16] |
Li R, Fletcher JE, Xu L, Holliday D, Williams BW. A hybrid modular multilevel converter with novel three-level cells for DC fault blocking capability. IEEE Trans Power Deliv 2015;30(4):2017–26.
|
| [17] |
Qin J, Saeedifard M, Rockhill A, Zhou R. Hybrid design of modular multilevel converters for HVDC systems based on various submodule circuits. IEEE Trans Power Deliv 2015;30(1):385–94.
|
| [18] |
Vinothkumar K, Segerqvist I, Johannesson N, Hassanpoor A. Sequential autoreclosing method for hybrid HVDC breaker in VSC HVDC links. In: Proceedings of the 2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC); 2016 Dec 5–8; Auckland, New Zealand. New York: IEEE; 2016. p. 1–6.
|
| [19] |
Guo XS, Zhou Y, Yang MJ, Yao WZ. Research on control scheme for single converter online entry/exit in dual-converter based VSC-HVDC. Power Syst Technol 2019;43(9):3393–8. Chinese.
|
/
| 〈 |
|
〉 |
