Kunlun Han
ABSTRACT
The main task of converter protection is to identify the internal faults in converter. However, the converter AC side faults also cause the converter protection action, and the relationship between faults and the converter protection becomes more complex. Considering the function of DC control, the dynamic characteristics and action of converter protection under various faults on the AC side of the converter are analyzed. Whether there is a fault ground point in the circuit determines the change of the DC side electrical quantity in each converter protection. The relative position between the current transformer and the fault point directly affects the response of DC control system. Affected by DC control system, the dynamic characteristics and action results of each converter protection under the two-phase grounding fault cannot be considered as a simple superposition of that under the single-phase grounding fault and interphase short circuit fault.
- Darwish H A, Rahman M A, Taalab A I, et al. Overcurrent relay with novel characteristics for HVDC converter protection. Canadian Conference on Electrical and Computer Engineering, 1995: 664--667.Google Scholar
- Kunpeng Zha, Wandi Zhou, Chong Gao, et al. Research on Routine test of HVDC convertor valve and its engineering practice. Power System Technology, 2013, 37(2): 466--470.Google Scholar
- Baoliang Sheng, Hans-Ola Bjarme, O. Saksvik, et al. Modern HVDC thyristor valve and HVDC transmission technologies. High Voltage Apparatus. 2003, 39(6): 47--50.Google Scholar
- Qingyun Yuan. Arrangement and principal of converter protection of HVDC. High Voltage Engineering, 2004, 30(11): 13--14.Google Scholar
- Chong Gao, Jialiang Wen, Kunshan Yu. Influence of thyristor reverse recovery charge dispersity on HVDC valves. Proceedings of the CSEE, 2008, 28 (28): 1--5.Google Scholar
- Haifeng Sun, Xiang Cui, Lei Qi, et al. High-frequency of valve components in high voltage direct current converter stations. Transactions of China electrotechnical society, 2009, 24(11): 142--148.Google Scholar
- Hengming Sun, Jifeng Cao. Study on anti-jamming performance of differential protection in HVDC converter. Southern Power System Technology, 2008, 2(5): 28--31.Google Scholar
- Jie Liu, Jing Zhang, Junzheng Cao, et al. Research of damping system characteristics for HVDC Converter Valves. Proceedings of the CSEE, 2012, 34(30): 16--22.Google Scholar
- Xinhui Du, Dianxia Hu. Simulation and analysis of protection devices for converter station in HVDC transmission system. Journal of Huaqiao University (Natural Science), 2013, 34(2): 134--138.Google Scholar
- Ying Zhang, Nengling Tai, Bin Xu. Operation characteristics analysis for valve short-circuit protection in HVDC system. Automation of Electric Power Systems, 2011, 35(8): 97--102.Google Scholar
- Nian Mei, Yinhong Li, Dengfeng Liu, et al. Study on the operational equation for valve short circuit protections in HVDC projects. Proceedings of the CSEE, 2009, 29(1): 40--47.Google Scholar
- Xiaohua Li, Yang Liu, Zexiang Cai. Analysis of grounding fault at HVDC converter transformer valve side. Automation of Electric Power Systems, 2013, 37(5): 38--45.Google Scholar
- Yang Liu, Xiaohua Li, Zexiang Cai. Location of HVDC converter grounding fault. Automation of Electric Power Systems, 2010, 34(8): 86--91.Google Scholar
- Tao Zheng, Huanhuan Qi, Ying Fan. A New Valve Short circuit Protection Based Method for Identifying Fault Locations in HVDC Converters. Automation of Electric Power Systems, 2013, 37(5): 99--104.Google Scholar
- Jingzhou Cheng, Zheng Xu. Analysis of AC faults in converter station and characteristics of its relay protection. Proceedings of the CSEE, 2011, 31(22): 88--95.Google Scholar
Index Terms
- Difference Analysis of Converter AC Side Faults and Converter Protection Action Affected by DC Control
Recommendations
Two-switch flyback PWM DC–DC converter in discontinuous-conduction mode
The two-switch flyback DC–DC converter is an extended version of the conventional single-switch flyback converter. An additional switch and two clamping diodes serve as a simple, but an effective way to limit the switch overvoltages, which occur in the ...
Analysis of Modified Single-Phase PFC AC-DC Buck-Boost Converter
RVSP '11: Proceedings of the 2011 First International Conference on Robot, Vision and Signal ProcessingThis paper researches a modified single-phase power-factor-correction (PFC) AC-DC buck-boost converter, which is operated in discontinuous conduction mode (DCM) by using a simple control scheme to achieve almost unity power factor, low total harmonic ...
A monolithic buck DC-DC converter with on-chip PWM circuit
A monolithic CMOS voltage-mode, buck DC-DC converter with integrated power switches and new on-chip pulse-width modulation (PWM) technique of switching control is presented in this paper. The PWM scheme is constructed by a CMOS ring oscillator, which ...
Comments