Measuring system for shunt vectors of metal frames of large ground grids on basis of wireless transmission
A metal frame and wireless transmission technology, applied in the direction of measuring devices, measuring electrical variables, measuring current/voltage, etc., can solve the problems of unmeasured phase, small calculated value of test current, unmeasured ground wire shunt, etc., to achieve accurate size and phase Effect
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[0035] Such as figure 1The shown measurement system of substation metal frame shunt vector based on wireless transmission, the measurement system includes frequency conversion signal source 1, coupling transformer 2, frequency selection ammeter 3, frequency selection voltmeter 7, current transformer 4, wireless communication instrument 5, Wireless transmitting antenna 6, Rogowski coil 10, wireless receiving antenna 12 and frequency-selective multimeter 11, frequency conversion signal source 1 is connected to the input terminal of coupling transformer 2, and the output terminal of coupling transformer 2 is divided into two outputs, one of which is connected to the remote current through a wire Pole 9, one way connects the frequency-selective ammeter 3 and the current transformer 4 in series with the grounding down-conductor of the substation under test in sequence through a wire, and injects a test current into the substation under test. The grounding down conductor is connecte...
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