[time-nuts] Weird TEC data

[Magnus Danielson]

On 08/04/2011 10:31 AM, Poul-Henning Kamp wrote:
> In message<E9DFD046D648474891D49E82D6BD94E8 at cyrus>, "Bill Hawkins" writes:
>
>> Could you please explain how transformer phase lags could jump?
>
> When one power plant ramps up and another ramps down, the power flow
> reverses in some transformers and transmission lines.
>
> If the shifts you see has this cause, you should see them in both
> directions over time (weeks, months).
>

Notice how the big jumps down matches the beginning of the steep 
direction down. It is interesting to note that there is also a tendency 
for the diff curve to go down even for the upward direction.

Notice how the diff moves upwards only occasionally and with a much 
smaller amplitude.

Could there be a systematic cycle slip one one of the sites?

I would hook up the probes on the same site such that they see the same 
signal to see if there is a difference between them.

Cheers,
Magnus