Method for measuring phase of power transmission and distribution line
A technology of transmission and distribution lines and measurement methods, which is applied to the phase angle between voltage and current, measurement devices, fault locations, etc., and can solve problems such as comparison measurement, phase jumping, and failure to perform phases
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[0014] A method for measuring the phase of a power transmission and distribution line, the steps of which are as follows: before the measurement, the line is in an overhaul state, the test site is on the side of the line outlet switch of the substation line, a group of three-phase short-circuit grounding wires are hung on the lines on both sides, and Assume that the two sides of the line are substations A and B respectively, and the phases on both sides of A and B are phases A, B, and C respectively. Assume that substation B is a known system phase, and the phase of substation A is an undetermined phase. Test The work is carried out in substation A, when the test starts; (1) first inform the personnel of substation B to start the test work, remove the three-phase short-circuit grounding wire on the line of substation A, and use the megohmmeter to shake the three combinations of AB, BC, and CA respectively. At this time, due to the three-phase short circuit on the line side of s...
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