IEEE Power & Energy Magazine - July/August 2015 - 94

service reliability. No justification was
provided.
40. "Determination of Reserve and Interconnection Requirements," H.D.
Limmer, AIEE Trans., (Power Apparatus and Systems), vol. 77, August 1958, pp. 544-50.
Reference 40, [1958] by H.D. Limmer (Public Service Electric and Gas
Company), utilized a one day in ten
years LOLP based on 253 weekdays.
42. "Use of Probability Methods in
the Economic Justification of Interconnecting Facilities Between
Power Systems in South Texas,"
A.P. Jones and A.C. Mierow, AIEE
Trans., (Power Apparatus and Systems), vol. 77, 1958, pp. 520-30.
Reference 42, [1958] by A.P. Jones
(Central Power and Light Company,
Texas) and A.C. Mierow (Central and
Southwest Operating Committee, Texas),

37. "The Effect of Interconnections
on Economic Generation Expansion Patterns," L.K. Kirchmayer,
A.G. Mellor, and H.O. Simmons
Jr., AIEE Trans., (Power Apparatus
and Systems), vol. 76, June 1957,
pp. 203-14.
Reference 37, [1957] by L.K. Kirchmayer (General Electric Company)
et al., utilized an LOLP index of one
day in ten years and a value of one day
in two years when adding large units.
The paper also states that the average
reliability standard was not universally
applicable, and there is a need for a
better standard to balance between the
economic loss of failure and the cost of
providing service. In his discussion of
this paper, C.W. Watchorn suggested
that a criterion of one day in ten years
approximated fairly closely the results of such an economic standard of

utilized an LOLP of 0.000555 which
equates to one day in seven years considering 257 peak load days/year.
43. "Determination of Reserve-Generating Capability," H. Halperin
and H.A. Adler, AIEE Trans.,
(Power Apparatus and Systems),
vol. 77, 1958, pp. 530-44.
Reference 43, [1958] by H. Halperin
and H.A. Adler (Commonwealth Edison Company in Chicago), introduced
a frequency and duration approach to
generating reserve assessment using a
criterion of once-in-five-years. This is
a frequency index and not an expected
duration index. This pioneering paper
stimulated some excellent discussion.
72. "Application of Probability Methods to Generating Capacity Problems," AIEE Subcommittee on
Application of Probability Methods, AIEE Trans., Pt. III, (Power

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