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Substation Zone Of Influence
4

Substation Zone Of Influence

Substation Zone Of Influence

(OP)
I am looking for assistance in calculating the 300V Zone of Influence with respect to communications equipment protection at a substation.  Does anyone have any references on this?

RE: Substation Zone Of Influence

You might do a search on "ground potential rise".  Also try www.positronpower.com.

RE: Substation Zone Of Influence

(OP)
Thanks Busbar - this standard looks like it covers it.

RE: Substation Zone Of Influence


pintalo—

Unfortunately, IEEE does not provide much of anything for free these days, but PDF availability does simplify things a bit.
     

RE: Substation Zone Of Influence

Suggestion: This may come handy:
http://gpr-expert.com/wire-line.htm
since it addresses in:
Figure 2: Block diagram for HVI installation,
the 300 Volts Point Zone of Influence

RE: Substation Zone Of Influence

Using a combination of twisted pairs wires, shielding and grounding connection could be an effective mitigation for the effect of induced voltage on control and low voltage power cable.
Significant induce voltage could be created on control and low voltage power cable by surge during switching, lightning or fault conditions in a substation.
Fiber optic could be an option for control system since is naturally immune to induce voltage.
The enclose article could be helpful for your application.
http://pm.geindustrial.com/faq/Documents/General/GER-3205.pdf

RE: Substation Zone Of Influence

Current signals would be more immune to this sort of thing than a 0-5V signal.

RE: Substation Zone Of Influence

Getting back to the original question about calculating the 300 volt zone of influence:

I don't have access to IEEE Std 487 or 367, but wouldn't a calculation of equipotential lines around a facility during a fault give you the 300 volt zone of influence.  Several grounding packages (for instance SES CDEGS) allow modelling of the ground system and calculation of earth potential at various points.

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