scholarly journals The principle and application effect of DC breaker and arm damping system

2020 ◽  
Vol 6 ◽  
pp. 220-227
Author(s):  
Qian Chen ◽  
Peng Qiu ◽  
Yi Lu ◽  
Xiaoming Huang ◽  
Jiayi Wu
Keyword(s):  
Dc Breaker

Interactions between a half-bridge MMC and a hybrid DC breaker during fault current interruption compared to a full-bridge MMC

2020 ◽  
Vol 13 (18) ◽  
pp. 4168-4175
Author(s):  
David Döring ◽  
Klaus Würflinger ◽  
Volker Staudt ◽  
Marcus Zeller ◽  
Günter Ebner
Keyword(s):  
Fault Current ◽  
Current Interruption ◽  
Dc Breaker

scholarly journals Modeling a voltage source converter assisted resonant current DC breaker for real time studies

2020 ◽  
Vol 117 ◽  
pp. 105678
Author(s):  
Seyed Sattar Mirhosseini ◽  
Siyuan Liu ◽  
Jose Chavez Muro ◽  
Zhou Liu ◽  
Sadegh Jamali ◽  
...  
Keyword(s):  
Real Time ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Dc Breaker

scholarly journals An Optimized Coordination Strategy between Line Main Protection and Hybrid DC Breakers for VSC-Based DC Grids Using Overhead Transmission Lines

Energies ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1462 ◽  
Author(s):  
Zheng ◽  
Jia ◽  
Gong ◽  
Zhang ◽  
Pei
Keyword(s):  
Transmission Lines ◽  
Power Transmission ◽  
Short Circuit ◽  
Power Grids ◽  
Fault Line ◽  
Long Distance ◽  
Coordination Strategy ◽  
Overhead Transmission Lines ◽  
Depth Analysis ◽  
Dc Breaker

Compared with alternating current (AC) power grids, the voltage-sourced converter (VSC)-based direct current (DC) grid is a system characterized by “low damping”, as a result, once there is a short-circuit fault on the DC transmission line, the fault current will rise more sharply and the influence range will be much wider within the same time scale. Moreover the phenomenon that a local fault causes a whole power grid outage is more likely to occur. Overhead transmission lines (OHLs) have been regarded as the mainstream form of power transmission in future high-voltage, large-capacity and long-distance VSC-based DC grids. However, the application of overhead transmission lines will inevitably lead to a great increase in the probability of DC line failure. Therefore, research on how to isolate the DC fault line quickly is of great significance. Based on the technology route for fault line isolation using DC breakers, on the basis of in-depth analysis of traditional coordination strategy, an optimized coordination strategy between line main protection and a hybrid DC breaker for VSC-based DC grids using overhead transmission lines is proposed in this paper, which takes the start-up output signal of line main protection as the pre-operation instruction of the corresponding hybrid DC breaker. As a result, the risks of blockage of the modular multilevel converter (MMC) closer to the fault position and of damage to power electronic devices in main equipment can be reduced effectively. Finally, the proposed coordination strategy was verified and analyzed through simulation.

Simulation and fault analysis of DC breaker in HVDC converter station

2017 ◽  
Author(s):  
Bo Zhang ◽  
Jinjiao Kong ◽  
Jun Chen ◽  
Zhi Zhang ◽  
Eddie Chen ◽  
...  
Keyword(s):  
Fault Analysis ◽  
Dc Breaker

Types of Circuit Breaker and its Application in Substation Protection

2017 ◽  
Vol 8 (1) ◽  
pp. 213
Author(s):  
Hui Hwang Goh ◽  
Sy yi Sim ◽  
Nur Iskandar Bin Hamzah ◽  
Sulaiman bin Mazlan ◽  
Chin Wan Ling ◽  
...  
Keyword(s):  
Power System ◽  
Circuit Breaker ◽  
Protection System ◽  
System Component ◽  
Sulphur Hexafluoride ◽  
Vacuum Circuit Breaker ◽  
Sf6 Circuit Breaker ◽  
Protection Devices ◽  
Air Circuit Breaker ◽  
Dc Breaker

Power system consists of the generation, transmission, distribution, and substation. All the power system component requires suitable protection devices as the protection system to protect the system during fault occur. In this paper, the circuit breaker has been selected as one of the protection devices in several applications. The types of circuit breaker that has been reviewed in this paper are oil circuit breaker (OCB), air circuit breaker (ACB), sulphur hexafluoride (SF6) circuit breaker, vacuum circuit breaker, and DC breaker which are hybrid DC breaker and solid-state DC breaker. Normally, the systems or the circuits disrupted or damaged by the fault. To implement the protection system in the system or circuit, the type of faults and cause of faults should be known to overcome the fault. To provide the suitable voltage for the consumer, the substation is needed to control the voltage transmitted at high voltage from the generating station. Protection system is also required in a substation.

scholarly journals A Novel Submodule Applied in HVDC Hybrid DC Breaker Topology

2018 ◽  
Vol 64 ◽  
pp. 04003 ◽  
Author(s):  
Wu Junmin ◽  
Zhang Xizi ◽  
Li Cui ◽  
Zhang Jun ◽  
Zhao Zhibin
Keyword(s):  
Renewable Energy Sources ◽  
Circuit Breaker ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Dc System ◽  
Electrical Stress ◽  
Solar Energy Utilization ◽  
Dc Circuit Breaker ◽  
New Type ◽  
Dc Breaker

In recent years, with the vigorous development of power electronic technology, renewable energy sources such as wind power and solar energy utilization efficiency continuing to improve, and the application scale expanding unceasingly, DC power grid technology and the development of multiterminal HVDC has become a key link of transmission technology in our country. As the key equipment of biulding DC system, The direct current breaker need to be optimized on the aspect of topology, to promote the development of dc transmission. This article puts forward a new type of submodule which can be applicated in hybrid DC breaker. After a brief review of DC circuit breaker research status, the paper will give the topology structure, and analyzes its working principle. Then, verification and electrical stress calculation will be done in Saber Sketch simulation. Based on this, two other present scheme will be introduced, and finally a comparison will be made between the diffent scheme. As is concluded, the novel submodule can save the power elctronic device cost effectively

scholarly journals Design of a Solid-State Circuit Breaker for a DC Grid-Based Vessel Power System

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 953 ◽  
Author(s):  
Lukas Tapia ◽  
Igor Baraia-Etxaburu ◽  
Juan José Valera ◽  
Alain Sanchez-Ruiz ◽  
Gonzalo Abad
Keyword(s):  
Solid State ◽  
Power System ◽  
Electric Propulsion ◽  
Circuit Breaker ◽  
Design Guidelines ◽  
Zero Crossing ◽  
Solid State Circuit ◽  
Dc Breaker ◽  
Solid State Circuit Breaker ◽  
Grid Based

Electric propulsion and integrated hybrid power systems can improve the energy efficiency and fuel consumption of different kinds of vessels. If the vessel power system is based on DC grid distribution, some benefits such as higher generator efficiency and lower volume and cost can be achieved. However, some challenges remain in terms of protection devices for this kind of DC grid-based power system. The absence of natural zero crossing in the DC current together with the fast and programmable breaking times required make it challenging. There are several papers related to DC breaker topologies and their role in DC grids; however, it is not easy to find comprehensive information about the design process of the DC breaker itself. In this paper, the basis for the design of a DC solid-state circuit breaker (SSCB) for low voltage vessel DC grids is presented. The proposed SSCB full-scale prototype detects and opens the fault in less than 3 µs. This paper includes theoretical analyses, design guidelines, modeling and simulation, and experimental results.

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