Line Protection Scheme for Multiple-receiving Ends HVDC System

2020 ◽  
Author(s):  
Zhengguang Chen ◽  
Xingguo Wang ◽  
Liu Chang ◽  
Liangliang Hao ◽  
Shuyang Wang ◽  
...  
Keyword(s):  
Hvdc System ◽  
Protection Scheme

scholarly journals Analysis and Protection Scheme of Station Internal AC Grounding Faults in a Bipolar MMC-HVDC System

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 26536-26548 ◽  
Author(s):  
Shimin Xue ◽  
Cheng Gu ◽  
Baibing Liu ◽  
Boyang Fan
Keyword(s):  
Hvdc System ◽  
Protection Scheme

Control and protection scheme of HVDC system with self-commutated converter in system fault conditions

2000 ◽  
Vol 132 (2) ◽  
pp. 6-18 ◽  
Author(s):  
Masahiro Takasaki ◽  
Naoki Gibo ◽  
Kiyoshi Takenaka ◽  
Toshiyuki Hayashi ◽  
Hiroo Konishi ◽  
...  
Keyword(s):  
Hvdc System ◽  
Protection Scheme

Line Protection Scheme for Multiple-receiving Ends HVDC System

2020 ◽  
Author(s):  
Zhengguang Chen ◽  
Xingguo Wang ◽  
Chang Liu ◽  
Liangliang Hao ◽  
Shuyang Wang ◽  
...  
Keyword(s):  
Hvdc System ◽  
Protection Scheme

scholarly journals VSC-HVDC Bipolar Grid Based On Novel Distance Protection Scheme

2019 ◽  
Vol 8 (4) ◽  
pp. 2524-2529
Keyword(s):  
Practical Implementation ◽  
Zone Boundary ◽  
Distance Protection ◽  
Hvdc System ◽  
Hvdc Transmission ◽  
Protection Scheme ◽  
End Point ◽  
Internal Fault ◽  
Protection Method ◽  
Lumped Parameter

Mostly distance protection is widely used in HVAC system no practical implementation is done for HVDC system. It is essential to measure accurately difference in internal fault from external correctly in distance protection at the zone boundary. The smoothing reactor in HVDC system is present at two ends and it can be considered as the operating boundary of distance protection. Considering these feature this paper introduce distance protection method for HVDC transmission line. Current and voltage at end-point are planned accurately using those at the relay point, based on distributed parameter model. The line between the fault point and end point is simplified as RL model lumped parameter and differential equations obtain fault distance. In this way, accuracy of calculation at the zone boundary is attained, that contributes to the improvement in operation of protection. Simulation results show that proposed method is used as primary protection for HVDC transmission and is capable of protecting the whole line with high rapidity.

Study of Overvoltage Protection and Insulation Coordination for MMC Based HVDC

2013 ◽  
Vol 347-350 ◽  
pp. 1812-1817
Author(s):  
Yi Lei Gu ◽  
Xiao Ming Huang ◽  
Peng Qiu ◽  
Wen Hua ◽  
Zhe Ren Zhang ◽  
...  
Keyword(s):  
Multilevel Converter ◽  
Deterministic Method ◽  
System Planning ◽  
Hvdc System ◽  
Protection Scheme ◽  
Acceptable Range ◽  
Verification Conditions ◽  
Overvoltage Protection ◽  
Undersea Cables ◽  
Insulation Coordination

This paper focus on overvoltage protection and insulation coordination in Modular Multilevel Converter based HVDC system planning. An overvoltage protection scheme, which bases on the topology used inTransbay project by Siemens, is proposed in this paper. Thescheme draws fromthe characteristics of MMC-HVDC systems and the research results in classic HVDC systems, byplacing arresters at some key locations in the MMC-HVDC converter station.With this scheme, the overvoltage at those key pointscan be limitedto an acceptable range and hence protect the key equipment concerned. Since all the DC lines of the project are undersea cables, no lighting overvoltage is considered and 14 faults which could happen are carefully selected to serve as the verification conditions for the insulation design. Based on the PSCAD/EMTDC simulations and the deterministic method, the specified withstand voltage levels of the critical equipment in the converter station is calculated.

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