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ISSN: 2181-3515 VOLUME 4 | ISSUE 14 | 2025
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DOI: h ps://10.5281/zenodo.17664917
APPLICATION OF SMARTGRID BALANCED UNIT IN EMERGENCY
SITUATIONS AND EMERGENCY OUTAGES OF THE 110/35/10 KV
SUBSTATION OF THE USMAT TOWN OF JIZZAKH REGION
N.T. Toshpula o
“TIIAME” NRU do sen , “Depa men o Elec ical Powe and Renewable Ene gy
Sou ces”.
E-mail: nus a illo5[email p o ec ed]u
B.T. Shodie
“TIIAME” NRU, Assis an , “Depa men o Elec ical Powe and Renewable Ene gy
Sou ces”.
E-mail: bobu shodiye [email protected]
G.Sh. Mama asulo a
“TIIAME” NRU, magis an “Depa men o Elec ical Powe and Renewable Ene gy
Sou ces”
E-mail: mama asulo agul [email protected]
ABSTRACT
This a icle discusses eliabili y and con inui y in mode n powe supply sys ems.
he calcula ion o he main equi emen s o ene gy secu i y, he g ow h own o he
en e p ise o elec ic ne wo ks o he Bakhmal Dis ic o he e i o ial b anch o he
Jizzakh egion o he Jizzakh egion o he Jizzakh Join -S ock Company” e i o ial
elec ic ne wo ks " as a unk and dis ibu ion link in he 110/35/10 kV subs a ion
ne wo ks, in e connec ion o high ol age le els, du ing he delay o p o ec i e
au oma ion, e c.), he need o apply a balanced uni (balance shee ) based on he Sma
Con ol concep was conside ed in o de o con inue he ene gy supply wi hou
in e up ion.
Keywo ds: powe supply, ne wo k, sys em, nims ance, ol age, Sma Con ol,
concep , digi al echnology, Sma G id, ne wo k moni o ing, sho ci cui , in eg a ion.
Reliabili y and con inui y in mode n powe supply sys ems a e he main
equi emen s o Ene gy Secu i y [1]. Powe g id en e p ise o he Bakhmal Dis ic o
he egional b anch o he Jizzakh egion o he Jizzakh Join -S ock Company “ egional
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powe ne wo ks” he municipali y o Usma as a unk and dis ibu ion link in he
110/35/10 kV nims an ia ion ne wo ks, in e connec ing high ol age le els [2]. In o de
o con inue he ene gy supply con inuously du ing eme gencies (sha p d ops in ol age,
sho ci cui s, load imbalance, delay in p o ec i e au oma ion, e c.), i will be necessa y
o apply a balanced uni (balance shee ) based on he Sma Con ol concep [3].
A Sma con ol (o sma con ol) sys em is a complex ha analyzes, p edic s,
and au oma ically balances he s a e o he powe g id based on digi al echnologies,
a i icial in elligence algo i hms, and eal – ime ope a ing senso s [4].
Au oma ic e-p o isioning and load dis ibu ion algo i hm.
When a b anch o he ne wo k ails du ing an acciden , he sys em au oma ically
wo ks acco ding o he ollowing algo i hm [5]. Ne wo k moni o ing: ΔVi and ΔIi a e
de e mined by PMU measu emen s [6].
Is he index o symme y:
Kns=(U2/U1)×100%
whe e U1, U2 a e he p incipal and In e se Phase ol ages o symme ic
componen s [7].
A balanced pa i ion is ac i a ed: i Kns>2%, he sys em will au oma ically igge
phase compensa ion [8].
To p e en dynamic s abili y dis o ion and p e en he appea ance o dynamic
shock momen s in gene al dis ibu ion ne wo ks, Sma G id's p e-balanced sec ion on
connec ions (OSD) ( elay p o ec ion and di ision un il ex e nal ne wo k swi ches s a )
is used on p e-p epa ed sec ions in case o no mal mode iola ion as he alloca ed pa
swi ches o powe -balanced mode [9]. Then he mode is pe o med on he ne wo k wi h
synch oniza ion and no mal loading o he necessa y equipmen [10].
Figu e 1 (a, b) shows g aphs o empo al p ocesses du ing sho ci cui on he
ex e nal ne wo k wi hou Sma G id pa i ion (wi hou des abiliza ion) and when
con olling his me hod (wi hou des abiliza ion) [11]. In pos -eme gency mode, you
can see ha changing mode pa ame e s is no an eme gency [12]. The change in
equency is caused by he appea ance o a sho - e m dynamic powe balance in he
gene a o sha du ing a sho ci cui in he ne wo k and is s abilized by he s anda d
speed con ol de ice o he ene gy uni [13]. Thus, he as leading di ision allows he
ollowing [14]:
* Res o ing wo king condi ions o p o ec he ex e nal ne wo k elay in a sho
ci cui close o elec ici y wi h a deep dec ease in he ol age o he di ec sequence
a e disconnec ing he Sma G id, co esponds o he absence o connec ions o he
Sma G id ne wo k;
* Allows you o keep sho ci cui cu en s ha a e swi ched o wi h a swi ch on
he Sma G id ne wo k and on an ex e nal elec ical ne wo k unchanged (excep o
Educa ional Resea ch in Uni e sal Sciences
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swi ches on he c oss sec ion);
Nims an ia ion o he “Usma 110/35/10 kV” o he Bakhmal Dis ic powe
ne wo ks o he Jizzakh egional b anch, owned by Jizzakh egional powe ne wo ks
JSC, loca ed in he own o Usma , Jizzakh egion. Sma G id powe plan gene a o s
p e en he appea ance o des uc i e dynamic momen s in he sha s o synch onous
machines due o he la ge elec omagne ic momen s ha occu du ing he eco e y o
ol age in he ne wo k a e sho ci cui shu down, aking in o accoun he ou pu o
hei o o s [15].
а)
b)
Figu e 1- he main powe sou ce in Sma G id is he Jizzakh egional b anch o
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he Jizzakh Regional Join -S ock Company “Regional Elec ic Ne wo ks”, which is he
main powe sou ce in Sma G id, he p ocess o swi ching wi h a 3-phase sho ci cui
in he 110 kV i es o he Usma 110/35/10 kV o he elec ic ne wo ks o he Bakhmal
Dis ic [16]. Figu e 1- he main powe sou ce in Sma G id is he Jizzakh egional
b anch o he Jizzakh Regional Join -S ock Company “Regional Elec ic Ne wo ks”,
which is he main powe sou ce in Sma G id, he p ocess o swi ching wi h a 3-ph.
Jizzakh egional b anch o Jizzakh Regional Join -S ock Company “Regional
Elec ic Ne wo ks” Usma 110/35/10 kV subs a ion o elec ical ne wo ks o Bakhmal
dis ic p ac ical esul s o Sma balanced managemen :
As a esul o he implemen a ion o a balanced con ol sys em in he Usma S a e
110/35/10 kV o he elec ical ne wo ks o he Bakhmal Dis ic o he Jizzakh egional
b anch o he Jizzakh Join -S ock Company “ egional elec ic ne wo ks”, he ollowing
we e no ed [18,19]:
- in he e en o an acciden , he eco e y ime is educed by 25-35 %;
- ol age imbalance Kns is educed om -3% o 1%;
- eac i e powe low dec eases by 15–20 %;
- o al losses a e educed o 5–8%.
In he e en o an eme gency, he balanced uni in eg a ed wi h he sma Con ol
Sys em p o ides s able ne wo k ope a ion, allows o ene gy eliabili y, au oma ic
esupply and minimal losses [20]. Such a sys em is impo an in he nume ical
ans o ma ion o umo 110/35/10 kV nims ances [21].
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ISSN: 2181-3515 VOLUME 4 | ISSUE 14 | 2025
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