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Busbar plays an important role in the transmission and distribution network of the electrical power system, and busbar protection is also an indispensable part of the relaying protection. This digest will focus on studying the property of the busbar protection. The basic analyzing approaches are explained and the performance of busbar protection is discussed by the simulation and calculation results...
Almost all plants have the experience of ACB's overcurrent relay (OCR) unexpectedly trip event. Each accident will cause a huge production loss. But manufacturers of OCR can't afford the cost-effective solution of problem. The most used solution is to install an additional relay (ex. ABB Relay B) to replace the function of the ACB's OCR or to adopt a new ACB to replace the old one. These two uneconomical...
With the increasing development of wind power, the capacity of wind farms is larger and its impact on grid operation has become more prominent. The fault current that wind farms provide is much different from the traditional synchronous machines. Wind farms in China are mostly centrally connected to power system. The central integration enlarges the impacts on power system. The correct action of the...
Improved reliability and safety of the Medium Voltage DC (MVDC) power distribution systems on board of a ship are the objectives of this work. The authors propose the integration of the self-healing capability of the protection against power system faults, and the protection against measurement faults. Most of previous work in literature focuses on only one of these aspects at a time. Here, the authors...
The microgrid concept is not a new one; however, implementing it and integrating it to a legacy grid is a challenge that engineers are thriving to solve. This challenge is due to many reasons including economic and technology [4]. The survivability of such a system in terms of its reliability and robustness to faults are key points to explore in the microgrid. The FREEDMources. A Green Hub was designed...
Decentralized state estimation of power system is under investigation for the monitoring of modern power system. In this framework, the identification of sensor failure is a critical issue. In this work, a novel method is proposed to achieve this goal, yielding improved reliability of the decentralized power system monitoring. Sensor measurements are validated locally, before they are elaborated....
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