SCIENTIFIC ABSTRACT GASVIANI, B.I. - GASYUK, G.N.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000514410016-9
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 23, 2000
• Sequence Number: 16
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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AUTHORSi and Dolidze, G.F.
TITLED, Differential phase protection of collector busbars
PERIODICAL5 Referativnyy zhurnals Elektrotekhnika i energetika,
no.11, ig6i, 43-44, abstract IIE 308, (Elektr~
stantsii, no.4, 1961, ?6-83)
TEXTi The article describes a differential phase protection
with current-balance relays in which, unlike ordinary differential
protection, the starting devices check both the phase and the
,~-alue of the differential current. The operating principles of
this method of differential protection of collector busbars are
considered, together with the questions of selection and
calculation of the phase characteristics of the starting devices
and their construction, the circuit for selecting the damaged
system of busbars and the use of combined filters for symmetric-al
c~omponents of currents. A simplified diagram is given cf a
differential-phase protection of busbars having a starting device
with normally-open contacts, the characteristics of the starting
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Difforent ia I phase protect ion of s/_l96/6i/ooo/oii/ozo/o42
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dAvic--~ in a (.omplex plane, the phase characteristics of the
starting devil:e, vector diagrams for cases of external short-
circuit. and short-circuit on the busbars. a schematic diagram of
the differential phase protection with starting device having
no!-mally-closed contacts, curves to determine the location of'
the centre of the required characteristics as function of the
magnitude of the negative error of the current transfo,!-mer and
flLte--, -curves t* determine the possibility of exe-,uting
differential phase protec-tion with appropriate circuits, a
.3~bf-mati-. diagram for selection of faulty busbar system, a dizg:-am
~f combined current fillter and diagram of location of starter
Jevire windings and distribution of fluxes in the relay magnetite
SvStpM. The introduction and operation of different4al phase
pr-te:t,-rn is des~'-ribed_ A prote!:tive 3ystem is ~,onsidered that
the differential- phase principle but 4s of high,~-.
aton-,itivity than ordinary differenTial prote~_tion cir-_uils and
does not reazt to large out-of--balance currents ' so thal, it ~,an
be used in a circuit. wi.,th current transformers of high erro-,
In sele~t-ng and calculating the phase sharacteristi-i of the
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Differential phase protection of s/196/61/000/011/02o/o42
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starting device it is assumed for simplicity that during external
short-circuits only the current transformers and filters through
which the total external short-circuit current flows give rise to
error in transformation of the primary current and that there is n'--
transformation error during short-circuits on the busbars, Here
the maximum error of angle is 350 and of current +15%. Witt)
differential phase protection on current transformers of different
transformation ratios the secondary currents are equalised by
altering the number of turns of the primary winding of the combin'~d
symmetrical-component current filters. Winding data of suitable
filters are gi-.-n. It is stated that for reasons of economy the
filter cables are located not on the busbar protective panels but
at the places where the current circuits run, for instance, in
switchgear drives, on control panels, etc. A disadvantage of the
differential phase protection considered is that it requires the
use of non-standard relays and current filters. Therefore, this
type of protection is recommended only in cases where ordinary
differential phase protection is insufficiently sensitive and
selective. Differential phase protection may be based on a
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Differential phase protection of S/196/61/ooo/oll/o2o/011-1
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simpler circuit of incomplete differential phase protection if
some of the elements connected to the ccliector busbars have
current transformers with errors that permit the use of normal
differential phase protection. The coiistruction of starter
devices and selection of their phase characteristics is carri-d
out in the same way as with complete different ial phase protect
EAbstractor-s note! Complete translation
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V.0, rnpi. nauk
Tjatt-~r itilizat.ion oc' thi, of Goorf-,.tan health
ri~scr4*s~, !~, letter to the od-ItUCT. VOP. ' 11~, fiZiCtPr. i
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.. GASTMOV, I.F. ---
Calculating threaded joints of drill pipes in the case of
directional turbodrilling [in Azerbaijani with summary in
Russian). Azerb.neft.khoz. 36 no.3:19-21 Mr '57. (1= 10:5)
(Oil well drilling--Equipment and supplies)

GASYKOV, M.A.; ALIYEV, D.A.
"Naftw
Biological and ecological characteristics and distribution of some
species of the treacle mustard (Irysimum) occurring In Azerbaijan
[in Azerbaijani vith summary in Russian]. Uch.zap.AGU no-11:51-57
155. (KLHA 9:11)
(Azerbaijan--Treacle mustard)
(Cardiac glycosides)

ABSTRACT: Some results are staiad on tlum mmlytie bebavior of the tral
function of. the operator originating from the differential equation I) of the
Enclosure. With the aid of these results., the author obtains, asy=. totes of the
solution of theCaueby problem (2) of the Miclosure. "The eu~hor expresses his
sincere gratitudeto his mehtor F, A, Le in for criticism ok results." 'Orig.
art. has: 15 fmiulas,
ASSOCIAMON: none
SUwrM:.. I 0,TaM3 ISTU63 ENM: 01
SUB CCDE*. 00 NO RV SOV: 004 003
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GA3'fMOV 2 M.G.
Si-L,u of differences of the eigenvalues of two self-adjoint operators.
Dokl. AN SSSR 150 no.6:1202-1~4'05 Je 63. (MIRA 16:8)
1. Prodstavleno akademikom A.A.Dorodnitsynym.
(Oper-atu.-i (Kmitherwitics))

.-L 15472-63 EWT(d)/FG0(v)/8DS_, AFFTG/VFP(0)
ACCESSION Mt AP3005425 S/bO20/63/ 151/005/3.ol4/*lol7
:AWHORS: - clasy*mov. 14. G.;-Levitan, B. X
TITLEt Sum of the differences of the eigenvalues of two singular
'Sturm-Liouville 9perators
.SO1URCEi AN SSSR. Doklady*, v. 151P no.~% 1963, =4-1o17
-TOPIC TAGSi eigenvalue, difference sum,, per~turbation,s Sturm-
Liouville operator, boundary condition
ABSTRACTt This is a continuation of a study carried out by M. G.
Gasy*mov,(DAN, no. 5, 1963, P. 150) wherein a formula was proposed
for the case of-two singular Sturm-Liouirille operators with discrete
spectra differing from each other only by finite perturbation. Au-
thors studied the sum of the differencea of the 'bigenvalues of two
singular Sturm-Liouville operators which differed from each other by
boundary conditions and finite perturbation. An analogue for Gasy*-
mov's formulas was obtained and some necessary conditions were proven!
so that the two sequences of numbers and were eigenvalues of one singular
Sturn.-M-ouville equation but with different boundary conditions. Three theorems area
1/2, proveds Orips arts has: 2) formulas,
Card

ACCESSION NR: AP4031754 S/0042/64/019/002/0003/0063
AM1011iss Levitano Be He; Gasyomovp M. Go
'TITLE: Determination of a differential"equation,from two spectra
SOURCE- Uspekhi matematicheskikh nauk, Y, 19p no. 2. 1964P 3-63
TOPIC TAGS: differential equation, spectral function,, differential equation deter-i
Mination, differential operator, linear integral equation, Parseval equality, SturAt
Liouville equation, asymptotic formulaj Sturm Liouville operator
'ABSTRACT: Section titles are:
II. Determination of a differential equation from its spectral function
1. On the spectral function of a differential operator
2. Derivation of a linear integral equation for the kernel K(x,tj
3. Inverse problem. Solvability of the integral equation for the kernel K(x,,t)
4. Derivation or the differential equation
5. Parseval equality
6. Classic Sturm-Liouville problem
Crd

1ACCESSION NR: AP4031754
1II. Determination of a regular Sturm-Liouville equation from two spectra
1. Expression of normalization numbers in terms of the spectrum
2. Asymptotic formulas for the numbers *:n
3- Inverse Sturm-Liouville problem
'!III. Determination of the singular Sturm-Liouville problem from two spectra
1. Formulas for the differences of traces of two Sturm-Liouville operators for'
various bodndary conditions at zero
2. Expression of the numbers Wn(hl) in terms of the spectrum
3. One class of,potentials
4. Solution of the inverse problem for the class.Q i
4
'Application 1. Proof of a theorem of V. A. Ambart3umyan
Application IL Derivation of asymptotic formulas (1.6.6) andCL.6-7)
~Given two sequences of real numbers /40 R?i #**040094
the authors treat the problem of finding neces"ry and sufficient conditions for
:these sequences to be two spectra of one Sturm-Liouville operator or the form
~11.. (z)) y -.0 (0