Time-domain fault location method based on single-circuit electrical quantity double-circuit DC transmission line on the same tower
A DC transmission line and fault location technology, which is applied to the fault location, detects faults according to conductor types, and measures electricity. Problems such as the difficulty of fault location, to achieve the effect of high fault location accuracy, high reliability, and good engineering application prospects
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[0042] Such as figure 1 As shown, this embodiment adopts PSCAD / EMTDC simulation software to construct a model of the ±500kV parallel pole double-circuit DC transmission system in Xiluodu, Guangdong, which is divided into rectification side and inverter side, including AC system 1, converter transformer Voltage 2, converter 3, grounding system 4, smoothing reactor 5 and power transmission system 6, one AC system is installed on the rectification side and the inverter side, and the AC system on each side is connected with multiple converter converters, and the converter The converter is connected to the converter, one side of the converter is grounded, and the other side is connected to the smoothing reactor, and the rectification side and the inverter side are connected through a transmission line 6; the tower structure is as follows figure 2 As shown; the model of the double-circuit bipolar DC transmission line paralleled on the same pole adopts the frequency-dependent parame...
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