IEEE Power & Energy Magazine - November/December 2020 - 101
figure 2. A diagram illustrating the general scheme of power distribution of the Niagara Falls Power Company. (Source:
The Niagara Falls Electrical Handbook, 1904.)
no known method by which a short
circuit on a transmission line of the
capacity of that at Niagara Falls could
be opened without causing damage to
the circuit breaker. Fuses were tried in
the Adams Plant, but the interrupting
duty was too severe.
T hey were removed
because they exploded
when clearing a fault
and caused more trouble than they prevented. The solution was
to disconnect the alternator's field, shutting
down the entire section
of bus. This would not
prove to be a long-term
solution, however.
Having been accustomed to dealing with
the relatively small
level of short circuits in the dc Edison systems, no one had anticipated the magnitude of faults possible
on ac systems. There were isolating
switches used to connect the generators to the bus, but these were never
intended to interrupt any level of fault
current. As most of the short circuits
were on the transmission line, the local distribution system was fed from a
section separated from the transmission
circuits. Eventually, this untenable situation would lead to the development
of the oil circuit breake r. B u t t h a t w o u l d
take a number of years
and was dependent on
gaining a better understanding of short
circuit phenomena.
The conductors used
for local distribution
were routed through a
concrete tunnel 2,000 ft
in length. Iron brackets were mounted
on the walls of the tunnel; each bracket carried four, lead-covered,
single-conductor copper cables (see Figure 3). This tunnel ended in a manhole
near the plants of the Pittsburgh Reduction and Carborundum companies.
The cables for these two plants left the
tunnel and ran on wooden poles to the
customers' premises. But in the same
The first
electro-
chemical
plant to take
power was
the Pittsburgh
Reduction
Company.
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IEEE Power & Energy Magazine - November/December 2020
Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - November/December 2020
Contents
IEEE Power & Energy Magazine - November/December 2020 - Cover1
IEEE Power & Energy Magazine - November/December 2020 - Cover2
IEEE Power & Energy Magazine - November/December 2020 - Contents
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IEEE Power & Energy Magazine - November/December 2020 - Cover3
IEEE Power & Energy Magazine - November/December 2020 - Cover4
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