Method for judging voltage compensation of single-pole adaptive reclosure of electric transmission line
A transmission line, voltage compensation technology, applied in circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve the problems of misjudgment and misjudgment of voltage discrimination method, and achieve the effect of safe and reliable control
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[0023] The technical solution of the present invention will be described in detail below through specific embodiments.
[0024] (1) The characteristics of electrical quantities in the case of single-phase transient faults
[0025] like figure 2 As shown, taking the A-phase fault as an example, the fault phase is disconnected when a transient fault occurs, and when the arc at the short-circuit point is extinguished, the line turns into a two-phase operation state. There is a capacitively coupled voltage between the faulty phase and the sound phase and electromagnetic coupling voltage The fault phase terminal voltage is and The vector sum of , and They are:
[0026] U · y = ( U · B + U · C ) C ...
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