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논문 기본 정보

자료유형
학술대회자료
저자정보
Zhen He (Huazhong University of Science and Technology) Jiabing Hu (Huazhong University of Science and Technology) Lei Lin (Huazhong University of Science and Technology) Zhiyuan He (Global Energy Interconnection Research Institute)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2019-ECCE Asia
발행연도
2019.5
수록면
2,984 - 2,989 (6page)

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Pole-to-ground (PTG) fault analysis is of vital importance for HVDC grid. However, many factors are not considered in the existing studies, such as the asymmetrical property of PTG fault, the coupling issue between dc transmission lines and the complexity of dc grid’s structure. This paper presents a PTG fault analysis method, which is based on common- and differential-mode (CDM) transformation. Similar to the symmetrical component method in ac system, the transformation decomposes the HVDC grid into CDM networks at first. Then, under the perspective of CDM components, a transfer impedance based analysis is performed to obtain the analytical expressions of PTG fault characteristics. The proposed PTG fault analysis method is applicable to arbitrary HVDC grid topologies. And the analytical expressions can give theoretical guidance for fault protection. The validity of the proposed PTG fault analysis method is verified by comparison with the simulation results in PSCAD/EMTDC.

목차

Abstract
I. INTRODUCTION
II. BASIC PRINCIPLE OF CDM TRANSFORMATION
III. CDM TRANSFORMATION BASED PTG FAULT ANALYSIS METHOD
IV. COMPARATIVE STUDY WITH SIMULATION
V. CONCLUSIONS
REFERENCES

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