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Open unloaded Transmission Line with a Disconnect Switch 1

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cuky2000

Electrical
Aug 18, 2001
2,133
There is a 230 kV overhead line that bee de-energized tripping the circuit breaker. Shortly after, the disconnect switch will attempt to isolate the T. Line as follow:

If the receiving end breaker is open and shortly after (let's say ~1min) the switch will open.
QUESTIONS:
1) Does the switch will see the stored capacitive charging current?
 
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Breakers at both ends are open? If so, the switch is simply separating a bit of the trapped and induced charge from the rest of the trapped and induced charge. If not, the switch drops charging current as it opens but there's no trapped charge on the line. Trapped charge is a decaying DC quantity starting from the voltage at the instant the breaker opened; induced charge is coupled in from adjacent lines. Charging current is an AC quantity produced by the connected system.

Given the phrasing of the question I'm not sure if you're talking trapped charge (...stored...) or charging current (...charging current?), but I don't think you can have both. At least not as I understand the definitions.
 
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