Asymmetric power transmission line parameter on-line measuring method
A technology of transmission lines and measurement methods, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc.
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[0047] The method for online measurement of parameters of three-phase asymmetric transmission lines in this embodiment is applicable to transmission lines with a length less than 150 km and a voltage level of 500 kV or below, including the following steps:
[0048] Step 1: Install synchronous measuring devices at both ends of the multi-circuit transmission line under test on the same tower, and at m different times (the line current differences at m different times must be large enough to ensure that the established equations are linearly independent) The voltage and current signals at both ends of the line under test are synchronously measured by the synchronous measuring device, so as to obtain m sets of measurement data at different measurement times, where m≥2.
[0049] The above-mentioned synchronous measuring device can be a measuring device based on the GPS synchronous clock in the prior art to realize synchronous measurement of the current and voltage signals at both en...
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