SU462239A1 - Zero sequence current filter - Google Patents

Zero sequence current filter

Info

Publication number
SU462239A1
SU462239A1 SU1889297A SU1889297A SU462239A1 SU 462239 A1 SU462239 A1 SU 462239A1 SU 1889297 A SU1889297 A SU 1889297A SU 1889297 A SU1889297 A SU 1889297A SU 462239 A1 SU462239 A1 SU 462239A1
Authority
SU
USSR - Soviet Union
Prior art keywords
current
zero sequence
sequence current
current filter
filter
Prior art date
Application number
SU1889297A
Other languages
Russian (ru)
Inventor
Константин Иванович Лебедев
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1889297A priority Critical patent/SU462239A1/en
Application granted granted Critical
Publication of SU462239A1 publication Critical patent/SU462239A1/en

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  • Emergency Protection Circuit Devices (AREA)

Description

следователыюсти показан па примерах анализа векторных диаграмм токов пр мой, обратной л нулевой носледовательностей, прлведенР1ЫХ на фнг. 2-4.Consequences are shown in the examples of the analysis of the vector diagrams of the currents of the direct, inverse and zero series of sequences presented on FGN. 2-4.

Из вектор.ных диаграмм, приведенных на фнг. 2, видно, что :Нрн афотекании через первичные обмотки трансформаторов тока 1а, Ь, 1с трехфазной системы токов пр мой последовательпостн ток через сопротнвленне нагрузкн фильтра Z не нротекает, т. е. на выходе фильтра не выдел етс  составл юща  тока пр мой последовательностн.From the vector diagrams shown in the fng. 2, it can be seen that: The HFV through the primary windings of current transformers 1a, b, 1c of a three-phase system of currents, the direct current through the co-current of the filter Z does not flow, i.e. the direct current component does not generate a direct current component.

Из векторных днаграмм на фнг. 3 вндио, что на выходе фнльтра не выдел етс  также и составл юща  тока обратной последовательностн .From vector diagrams on fng. 3 it is observed that the output component of the reverse sequence is also not highlighted at the output of the filter.

Из векторных диаграмм, нрнведенных на фнг. 4, видно, что лрн (Протекании через нервичные обмотки трансформаторов то,ка bs li, 1с трехфазной снстемы токов нулевой носледовательпости через сонротнвленне нагрузки фильтра Z нротекает составл юща  фазного тока нулевой последовательиостн io, определ ема  через первичный ток нулевой последовательности / н коэффициент трансформацииFrom the vector diagrams nrnvedennyh fng. 4, it can be seen that lrn (Flowing through the nervous windings of transformers then, bs li, 1c three-phase current circuit, zero continuity through the sound load of the filter Z, the phase sequence component io, determined through the primary current of zero sequence / n transformation ratio

трансформаторов тока ni:io --.current transformers ni: io -.

,Предмет и з о б р е тени , Subject and use of shadow

Фнльтр токов нулевой последовательности, содержащий трн трансформатора тока с соединеннем вторичных обмоток в треугольни14 верщины -которого л-инейными цеп ми св заны с реле защиты, а в цепи треугольника между началом и концом вторичных обмоток трансформаторов тока двух различных фаз подключена иагрузка фильтра, отличающийс  тем, ЧТО, с целью исключени  в нагрузке токов пр мой и обратной последовательностей, в линейные цени вторичных обмоток трансформаторов тока указанных фаз включены промежуточные трансформаторы тока с коэффициентом трансформации, равным трем, вторичные обмотки которых соединены по схеме на разность токов и подключены параллельно нагрузке фильтра.The zero sequence current filter, containing a current transformer with connected secondary windings in triangles, is connected with a protection relay, and in the delta circuit between the beginning and end of the secondary windings of current transformers of two different phases is connected a filter load that differs from THAT, in order to exclude the load of direct and reverse sequences in the load, the intermediate values of the secondary current transformers are included in the linear values of the secondary windings of the current transformers of these phases Transformation is equal to three, the secondary windings are connected in circuit to the current difference and connected in parallel with the filter load.

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SU1889297A 1973-03-02 1973-03-02 Zero sequence current filter SU462239A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1889297A SU462239A1 (en) 1973-03-02 1973-03-02 Zero sequence current filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1889297A SU462239A1 (en) 1973-03-02 1973-03-02 Zero sequence current filter

Publications (1)

Publication Number Publication Date
SU462239A1 true SU462239A1 (en) 1975-02-28

Family

ID=20544245

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1889297A SU462239A1 (en) 1973-03-02 1973-03-02 Zero sequence current filter

Country Status (1)

Country Link
SU (1) SU462239A1 (en)

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