CE
ENTRAL ELECTRICITY R
REGULATOR
RY COMMISSION
NEW
W DELHI
Petition No. 3/MP/20
012
m:
Coram
Dr. Pra
amod Deo, Chairpersson
Shri S.JJayarama
an, Membe
er
Shri V..S.Verma, Member
M
Shri M.Deena Da
ayalan, Me
ember
D
DATE
OF HE
EARING: 9.2
2.2012
DATE
D
OF OR
RDER: 13.6..2012
m
of
In the matter
C
Complianc
ce with th
he Regula
ation 5.2 (f) of the Central Electricitty
Regulattory Com
mmission (Indian Ele
ectricity Grid
G
Code
e) Regulations, 2010
regarding Restric
cted Gov
vernor Ma
ade of Operation
O
(RGMO)
he
by th
ns-Condon
ne the delay, extenssion of time
e and exem
mption fo
or
generating station
o RGMO in variou
us thermal and hyde
el generating statio
on
implementation of
ed by Karn
nataka Pow
wer Corp
poration Ltd. (KPCL).
operate
And
m
of
In the matter
K
Karnataka
Power Corporation Ltd.,
L
Banga
alore
…
…Petitioner
Vs.
egional Lo
oad Despa
atch Centrre, Bangalo
ore …Resspondent
Southern Re
ng were prresent:
Followin
1.
2.
3.
4.
Shri Guru
u Prasad, KPCL
K
Shri V.Su
uresh, SRLD
DC
Shri V.K.A
Agarwal, NLDC
N
Miss Joy
yti Prasad, NRLDC
ORDER
R
Th
his petition has be
een filed b
by the Ka
arnataka Power
Corporatio
C
on
Limited (KPCL), for
f
condo
onation the
e delay, extension
e
of time and
a
Ord
der in Petitio
on No. 3/MP/2012
gran
nt
Page 1
exempttion from
impleme
enting the
e Restricte
ed
Free Governor Mode of
o
Operation (RGMO) in the
e thermal and hydro genera
ating stations of th
he
ner, under Regulatio
on 5.2
petition
(ff)
of the Central E
Electricity Regulatorry
Commission (Indian Electrricity Grid Code) Regulation
R
ns, 2010 (hereinafte
(
er
d "Grid Cod
de"), as de
etailed bellow:
referred
a) Condon
nation of delay
(a
i
BTPS-Unit-I (500 MW)
M
C
Commissioned
on
24.12.2010
ADPH
H (1X15 MW
W +5X55 Im
mplementa
ation in the
MW)
m
month of No
ovember, 20
011
iii
(b
b)
Delay
yed by 5
month
hs (Approx))
Delay
yed by 16
1
month
hs (Approx))
Exten
nsion of Tim
me
S. No.
i
ii
iii
iv
v
vi
Thermal/H
Hydro
generating
g
sstations
RTPS Unit-I,3
3 and 5 o
of 210 MW
W
e
each
RTPS Unit-4 of 210 MW
S
Supa
PH (2X
X50 MW)
Kadra PH (3
3X50 MW)
Kodasalli PH (3X40 M
MW)
G
Gerusoppa
a PH (4X60 M
MW)
G
Ghataprab
bha PH (2X16 MW)
V
VUGPH
(4 x115
x
MW)
NPH (5x150 MW +1x135 MW)
LPH (2x27.5 MW)
S
SGS
(10x103
3.5 MW)
Bhadra (2x103.5 MW)
Extension
n Up to
31.12.201
12
31.12.201
12
31.12.201
12
31.12.201
12
31.12.201
12
31.12.201
14
(c
c) Exemptiion from RGMO
S. No.
i
ii
iii
Thermal/H
Hydro generrating stattions
Munirabad Hydro station (1x10 MW)
M
M
M
MGHE
(4x21.6 MW +4X
X13.2 MW)
Y
YDGS
(6x18
8 MW)-Therm
mal station
Ord
der in Petitio
on No. 3/MP/2012
Page 2
Backgro
ound
2.
R
Regulation
5.2.(f) of the of Grid Cod
de provid
des that all
a therma
al
generating units of 200 MW
W and ab
bove and all hydro units of 10 MW and
e synchron
nized with the grid, irrespectiv
ve of their ownership
p,
above which are
ve their g
governors in opera
ation at all time iin
shall be required to hav
dance with
h the provissions in su
ub-clausess (i) to (iii) of
o the Grid
d Code. The
accord
provisio
ons of gove
ernor actio
on is extrac
cted as un
nder:“G
Governor Action
A
(i)) Following
g Thermal and hydrro (exceptt those with up to three hou
urs
p
pondage)
g
generating
units shall b
be operated
d under resstricted gov
vernor mod
de
of operation
n with effec
ct from the d
date given below:
a) Thermal generating
g units of 200 MW and above,
(a
oftware bassed Electro Hydraulic Governor
G
(E
EHG) system
m : 1.8.2010
0
(1) So
(2) Ha
ardware ba
ased EHG sy
ystem:
1.8.2010
0
(b
b) Hydro un
nits of 10 MW
W and abo
ove:
1.8.2010
0
(iii) The restrricted gov
vernor mod
de of operation shalll essentiallly have th
he
fo
ollowing fea
atures:
(a) There
T
shoulld not be any redu
uction in g
generation in case o
of
impro
ovement in
n grid frequ
uency belo
ow 50.2 Hzz. ( for exa
ample if griid
frequency chan
nges from 49.3
4
to 49.4
4 Hz. then there shall not be an
ny
reduc
ction in ge
eneration). Whereas for any ffall in grid frequency
y,
generation from
m the unit sh
hould incre
ease by 5% limited to 105 % of th
he
MCR of the unit subject to m
machine capability.
(b) Ripple filter of
o +/- 0.03 H
Hz. shall be provided so
o that smalll changes in
i
gnored for load
l
correc
ction, in ord
der to preve
ent governo
or
frequency are ig
ng.
huntin
(c) If any
a of thesse generatin
ng units is re
equired to b
be operate
ed without its
i
governor in op
peration a
as specifie
ed above, the RLDC shall b
be
imme
ediately adv
vised abou
ut the reaso
on and dura
ation of such operation
n.
All go
overnors sha
all have a droop
d
settin
ng of betwe
een 3% and
d 6%.
(d) After stabilisa
ation of freq
quency aro
ound 50 Hz,, the CERC may review
w
the above
a
pro
ovision reg
garding the
e restricted
d governo
or mode o
of
opera
ation and frree governor mode off operation
n may be introduced.
Ord
der in Petitio
on No. 3/MP/2012
Page 3
er generatin
ng units in
ncluding th
he pondag
ge up to 3 hours Ga
as
(iiii) All othe
tu
urbine/Com
mbined Cycle
C
Powe
er Plants, wind and solar generators an
nd
N
Nuclear
Pow
wer Stationss shall be exxempted frrom Section
ns 5.2 (f), 5.2 (g), 5.2 (h
h)
a
and
,5.2(i) tilll the Comm
mission revie
ews the situ
uation.”
3.
C
Commission
n vide its order da
ated 4.10.2
2011 in Su
uo-motu Petition
P
No
o.
191/201
11 observe
ed as unde
er:
"2
2.
It ha
as been brought
b
to
o the notiice of the
e Commisssion by th
he
N
National
Lo
oad Despa
atch Centre
e that out of the 700
0 generating stationss/
units, about 560 gene
erating sta
ations have
e not yet switched over to th
he
o
operation
u
under
restrricted gov
vernor mod
de. The lisst of such generating
sttations / un
nits is enclo
osed as Ap
ppendix to
o this orderr. NLDC ha
as submitted
th
hat adequ
uate respon
nse is not c
coming fro
om genera
ating units which
w
hav
ve
d
declared
th
hemselves in RGMO. The fluctu
uation in system freq
quency alsso
o
occurs
at sy
ystem boun
ndary due to load change overr or sudden
n increase in
i
g
generation
due to ch
hange in schedule. With
W
all the
e units ope
erating witth
RGMO the fluctuation
n in system frequency
y would ha
ave been restricted
r
t
to
arge extent.
la
3.
a the generating sstations arre not on
n the RGM
MO mode
e,
As all
ower system
m
fluctuation in system frequency is adverssely affectting the po
a
and
the ge
enerating stations. N
Non-operation of the
e generatting station
ns
under the restricted
d govern
nor mode after 1.8.2010 amounts
a
t
to
he provision
ns of the Grrid Code.
non-compliance of th
4.
t
respon
ndents are
e directed
d to expla
ain by 25.10.2011 th
he
All the
re
easons for not
n switching over to the restrictted govern
nor mode of
o operatio
on
a
and
to show
w cause ass to why ap
ppropriate action und
der the Ele
ectricity Ac
ct,
2003 should
d not be in
nitiated against the re
espondentts for non-c
complianc
ce
o the provissions of the
of
e Grid Cod
de."
4.
In the bac
ckdrop off the abov
ve, we no
ow examin
ne the pra
ayer of th
he
petition
ner, in this petition
p
in the subseq
quent paragraphs.
5.
he petition
ner has sub
bmitted that all the governors
g
installed in
n the powe
er
Th
projectss has featu
ure of FGM
MO as defin
ned in IEGC
C. Howeve
er, modifica
ations hav
ve
to be carried
c
outt in all gov
vernors to have fea
atures of RGMO as directed
d
b
by
Ord
der in Petitio
on No. 3/MP/2012
Page 4
Commisssion vide order date
ed 20.8.2009 in Petiition No. 66
6/2009 which require
es
conside
erable tim
me
since
e it is to be
Manufa
acturers (O
OEMS`s)
obtainin
ng
done
e
by the
e Original Equipmen
nt
of
o Govern
nors and steps
s
to b
be followe
ed
include
quottations, processing
p
of quota
ations, pla
acement of orderrs,
implementation after ava
ailing consent from
m SLDC
petition
ner has further subm
mitted tha
at
he
for shut down. Th
the matter
m
wa
as discusse
ed in 229tth
Technic
cal Commiittee meetting of Boa
ard of Direc
ctors of the
e Corporattion held on
o
16.2.201
10. The said
d Committtee recom
mmended to
t implement the Co
ommission`s
order regarding RGMO and
a
also rresolved to
t seek e
extension of
o time fo
or
implanttation of orders.
o
Th
he petitioner has further subm
mitted that action ha
as
already
y been inittiated to implement
i
t the Com
mmission's order and
d necessarry
budgett provision was made in this re
egard. The
e petitione
er vide itss letter No
o.
AIR8LC//247 date
ed 5.3.2010
0 had req
quested the
e Commission to grant
g
tim
me
by initia
al period of
o one year for imp
plementation of the Commissiion`s orders
regarding RGMO
O operattion .
6.
Th
he petition
ner has sub
bmitted that in termss of the Re
egulations 5.2(f)
5
of th
he
IEGC, RGMO
R
could
nott be imple
emented
in its various pow
wer projects
within th
he speciffied time due
d
to delay in respo
onse by th
he Original Equipmen
nt
Manufa
acturers of governo
ors and re
equested to condo
one the delay.
d
Th
he
petition
ner has enu
umerated the reason
ns for delay as under:
S.N
No.
1
Generrating
station
n
BTPS-U
Unit-I
(500 MW)
M
Present status
Commissioned
d
on 24.12.2010
Ord
der in Petitio
on No. 3/MP/2012
Reason
n for delay
Period
P
o
of
d
delay
Implem
mented
during 5
month
hs
annuall
mainttenance (Approx)
(
period
Page 5
2
7.
Imp
ADPH
plementatio
on
(1X15 MW in the month
+5X55 MW) of Novembe
er,
2011
Order was plac
ced on 16
1
month
hs
(
BHEL on 6.9.2010. Scheme (Approx.)
not
could
be
mented earlier since
implem
it is a seasonal station
(55 MW
W unit wo
ork only
during rainy season) and
15 MW
W station irrig
gation. It
was im
mplemented
d in the
month of Novemb
ber 2011
when there
t
was re
estricted
discharrge through
h units.
Th
he petition
ner has su
ubmitted tthat RGM
MO is bein
ng implem
mented
the following
ge
enerating
stations and
acc
cordingly,
has req
quested
iin
t
to
grant tim
me to implement it.
S.No. Station
Prese
ent status
1.
RTPS: (Units-1, Installed durin
ng
ual
3 and 5: , 210 annu
MW each)
main
ntenance o
on
20.112012
Simulation
cking done.
chec
The scheme
s
is tto
be
teste
ed
on-lo
oad.
2.
RTPS: Unit- 4 of M/s.
Sumitom
mo
210 MW
Corp
poration ha
as
been
n requeste
ed
to furnish th
he
offer. Matter is
being
g followe
ed
up
with
firm
m.
y is awaited
d.
Reply
Supa PH (2
2X50 P.O.
date
ed
MW) Kadra
a PH 14/17
71-11
an
nd
(3X50
MW).
M
2.2.20
011 place
ed
Kodasalli PH on M/s.
M
BHEL for
(3X40
supplly,
MW).
M
the
Gerusoppa
a
supervision
of
PH (3X60 MW),
M
an
nd
erecttion
3.
Ord
der in Petitio
on No. 3/MP/2012
Reason
n for delay
Likely
on
completio
period/de
elay
Orders placed on M/s. BHEL Time requ
uired
on 20.11.2010. M
M/s. BHEL up
to
has co
upplies
of
31.12.2012
ompleted s
2
materia
als
at
site.
Implem
mentation was
w
taken
annual
up
during
mainte
enance sh
hut down
period.. Any mo
odification
require
ed could be
e done by
during
next
annual
enance perriod.
mainte
Firm ha
as been req
quested to Time requ
uired
to
furnish the offer. Matter is up
being followed
f
up
p with firm. 31.12.2012
2
They have
h
raised certain
queriess and same
e is under
discussion.
Deliverry period is quite Time requ
uired
long. Shut
S
down of units is up
to
require
ed for ere
ection of 31.12.2012
2
equipm
ment. Dela
ay is due
to long
g delivery p
period and
erectio
on period required
thereaffter.
Page 6
Ghataprab
bha
PH (2X16 MW)
M
4.
VUGPH (4X
X115
MW),
N
NPH
(4X150
MW+2X135
5
LPH
MW)
W)
(2X27.5 MW
5.
SGS (10X103.5
MW)
commissioning of
Gove
ernor
an
nd
HMC
C cubicles for
Supa
a
power
house, electron
nic
cubic
of
cles
gove
ernors
of
Ghattaprabha,
Kadra, Kodasa
alli
and Gerusopp
pa
er
house
es.
powe
Deliv
very period is
18 months for
Supa
a and 1
14
montths for other
proje
ects.
Inspe
ection
of
EHGC
C panels of
all the abov
ve
proje
ects
ha
as
been
n carried out
at BHEL, EDN
N,
and Bangalore in
the last week of
ch,
2011.
Marc
EHGC
C
cubicle
es
were
e dispatche
ed
from
BHE
EL,
Bhop
pal
an
nd
receiived at site.
M/s. Andritz hav
ve
furnisshed
the
eir
prelim
minary offe
er.
Clariffication on
o
the offer ha
as
n
sought
been
from the firm
m.
Being
g
followe
ed
up with
w
the firrm
regarding
clariffications.
M/s. Alsthom ha
as
furnisshed
th
he
scheme.
A
comment
ha
as
been
n furnishe
ed
on the scheme.
me
Revissed schem
from the firm is
awaiited.
Ord
der in Petitio
on No. 3/MP/2012
There
was
d
delay
in Time requ
uired
response from the Original up
to
ment Man
nufacturer. 31.12.2012
2
Equipm
Now, they
t
have furnished
their
preliminarry
offer.
Offer is under discussion
he firm. H
Hence the
with th
delay.
was
d
delay
in Time requ
uired
There
response from the Original unto
ment Man
nufacturer. 31.12.2012
2
Equipm
Now, they
t
have furnished
their offer. Offer is under
discussion with the firm.
Hence the delay.
Page 7
Bhadra (2
2X12 To be
e taken up
MW River bed
b
Units)
6.
Units are
a
they old and Time requ
uired
commiissioned du
uring 1963. upto
works 31.12.2014
Major
R&M
4
ning to Turbine has
pertain
been taken
t
up a
and orders
placed
d on M/s. A
Andritz on
27.11.2009.
As per the
present status, turbines are
o be reno
ovated by
likely to
2013. R&M of governors
would be taken up after
turbine
ation
of
renova
during which tim
me RGMO
could also
a
be don
ne.
he petitio
oner has further requested
d to grant exemp
ption from
m
Th
8.
implementation of
o RGMO in terms of Regula
ation 5.2 (f) of the IEGC. Th
he
ner has enu
umerated reasons fo
or not imple
ementing the RGMO
O as underr:
petition
S. No.
i
ii
iii
Re
The
ermal/Hydro
o
easons
gene
erating sta
ations
Mun
nirabad
(1x10 M//s Andrtiz Hydro Pvt.. Ltd. (OE
EM) has
MW))
infformed
that RGM
MO
can
nnot be
im
mplemented
d in the exxisting gove
ernor and
governor
require
up
p
gradation
of
ele
ectronics. This is irrigation cana
al based
po
ower house
e and unit rating is jusst 10 MW.
Ge
eneration depends on the discharges
alllowed by
y irrigation
n authoritties and
va
ariations in dischargess are not authorities
a
an
nd variatio
ons in diischarges are not
alllowed. Hen
nce, exemp
ption is requ
uested tin
im
mplementation of RGM
MO.
MGH
HE
(4x21.6 OE
EM (M/s Andritz
A
H
Hydro Pvt. Ltd. has
MW+
+4x13.2 MW
W)
infformed th
hat
RGM
MO
can
nnot be
im
mplemented
d in the existing gove
ernor and
upgradation of governor
requires
ectronics frrom DTL to SICAM 1703. Also
ele
sp
pares have been procured
p
to
o last for
co
onsiderable
e period. RGMO proposed to
be
e taken up
p when R&M
M of gove
ernors are
taken up. Hence, exe
emption is re
equested
in implementtation of RG
GMO .
YDG
GS (6X18 MW)
M
It uses LSHS as fuel. Un
nit size is le
esser than
00MW.
20
Ord
der in Petitio
on No. 3/MP/2012
Page 8
9.
C
Considering
g the submission off the petittioner and
d the doc
cuments on
o
record, we are of the view
v
that the stepss taken by
b the pe
etitioner fo
or
implementation of
o the RGM
MO in its un
nits of the generating
g
g stations are
a belated
d.
Subsequent revision in the schedule for implem
mentation of RGMO to 1.8.2010
ended in para
p
5.2 (ff) of IEGC
C, cannot be a valid
d reason for
f delayed
as ame
action in this reg
gard by the petitioner. Howe
ever, conssidering th
he difficultty
b the petitioner, we
w are not inclined to
t take an
ny action against th
he
faced by
petition
ner for dela
ay in imple
ementatio
on of RGMO in BTPS (unit-I, 500
0 MW ) and
ADPH (1X15
(
MW
W+5X55 MW
W)
for a period of
o 5 mon
nths and 15 months,
respecttively.
10.
W
With
rega
ard
to
the
t
petittioner`s
p
prayer
fo
or
exemp
ption
from
m
implementation of
o RGMO in its gene
erating stattions menttioned in para
p
8 of th
his
order,
we obse
erve that YDGS`s
units bein
ng of size
e less than
n 200 MW
W,
provisio
ons of IEGC
C regarding RGMO are not applicable
e to these generatin
ng
stationss. In respe
ect of oth
her Hydro stations, namely
n
Mu
unirabad (1x10 MW
W),
and NG
GHE (4x 21.6 MW+4x13.2 MW), which
w
are operating on DTL-5
595, which is
an obsolete tech
hnology, the
t
petitio
oner is dire
ected to
carry outt necessarry
cation/up gradation
g
in the adjusting gov
vernor ele
ectronics at an earrly
modific
date.
11.
he petition
ner has alsso prayed for extenssion of time for imple
ementatio
on
Th
of RGM
MO in the generation
g
n stations m
mentioned
d in para 7 of the this order. We
W
Ord
der in Petitio
on No. 3/MP/2012
Page 9
direct
the
pettitioner
to
o
expedite
and
make
a
all-out
efforts
fo
or
implementation of
o RGMO in the units of ge
enerating stations . We furthe
er
ner to ensure that th
hese therm
mal and hy
ydro gene
erating units
direct the petition
are put on FGMO
O with manual interve
ention with
h immediatte effect, till
t such tim
me
RGMO is implem
mented.
12.
P
Petition
No. 3/MP/201
12 is dispossed of in te
erms of the
e above.
Sd/NA DAYALA
AN)
(M.DEEN
MEMBE
ER
sd/-
sd/-
sd/-
(V.S.VERMA)) (S.JAYA
ARAMAN) (Dr. PRAM
MOD DEO)
M
MEMBER
MEM
MBER
CHAIRPE
ERSON
Ord
der in Petitio
on No. 3/MP/2012
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