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This paper presents a new protection scheme for AC zonal distribution system proposed for future marine power systems based on active impedance estimation. This technique actively imposes small transient disturbances onto the system at a point of measurement to excite the system in real time and estimate the system impedance over a broad frequency range at that point. The identified impedance can...
A small scale laboratory demonstrator has been constructed to represent a zonal DC distribution system as proposed for future naval vessels. This paper describes how the demonstrator has been used to validate a proposed fault location strategy - Active Impedance Estimation (AIE) - under experimental conditions. The practical processing algorithms required to reduce the effect of noise and the background...
On marine distribution systems traditional protection schemes often fail to provide the necessary reliability and discrimination. In this paper, a novel protection scheme for a zonal system, as proposed for marine applications, is presented based on active impedance estimation. The power system impedance is measured by injecting a very short current transient onto the network via a coupling inductance...
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