Chen Dong

TL;DR: In this paper, a traveling wave protection fixed value setting method for a high-voltage direct-current transmission line is proposed, which comprises the following steps that (1) a travelling wave protection function and an operation criterion mode are defined, and a polar wave fixed value and a floor mold wave variable quantity are analyzed, and various simulation experiment conditions are set; (2) a simulation model is set up, simulation is carried out under two work conditions, all directcurrent protection is closed in the simulation process, and polar wave data and floor mould wave data are extracted; (

TL;DR: In this article, a monopole fault isolation system for a real bipolar flexible DC power transmission project is described, in which the system comprises a fault isolation device which comprises a current transformer, a neutral bus region and a neutral line difference protection device disposed on a metal return wire.

TL;DR: In this article, the utility model relates to a monopole failure isolation system of very bipolar flexible direct current transmission engineering, its characterized in that: it includes a failure isolation device, and it includes, and the current transformer and the neutral bus that set up respectively on the neutral buses that the bridge arm links to each other under utmost point I, utmost point II's MMC distinguish.

TL;DR: In this paper, a method for checking the polarities of direct current measurement devices in a direct current transmission system was proposed, which includes the steps: serially connecting the direct current measurements in direct current circuits with the same polarity by a lead, and injecting direct current outputted by direct current signal generators into the closed-loop current circuit.