DE634507C - Extension of the method for testing current fluctuations according to patent 615752 to the testing of voltage converters with the help of a standard converter - Google Patents

Extension of the method for testing current fluctuations according to patent 615752 to the testing of voltage converters with the help of a standard converter

Info

Publication number
DE634507C
DE634507C DEH138519D DEH0138519D DE634507C DE 634507 C DE634507 C DE 634507C DE H138519 D DEH138519 D DE H138519D DE H0138519 D DEH0138519 D DE H0138519D DE 634507 C DE634507 C DE 634507C
Authority
DE
Germany
Prior art keywords
current
voltage
testing
transformer
transformers
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEH138519D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WALTER HOHLE DR ING
Original Assignee
WALTER HOHLE DR ING
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
Priority to DEH136984D priority Critical patent/DE615752C/en
Application filed by WALTER HOHLE DR ING filed Critical WALTER HOHLE DR ING
Priority to DEH138521D priority patent/DE618647C/en
Priority to DEH138519D priority patent/DE634507C/en
Priority to CH176677D priority patent/CH176677A/en
Priority to AT141447D priority patent/AT141447B/en
Priority to GB22038/34A priority patent/GB424810A/en
Priority to CH181579D priority patent/CH181579A/en
Priority to CH179343D priority patent/CH179343A/en
Priority to CH176982D priority patent/CH176982A/en
Priority to AT142842D priority patent/AT142842B/en
Priority to AT144602D priority patent/AT144602B/en
Priority to GB37197/34A priority patent/GB439661A/en
Application granted granted Critical
Publication of DE634507C publication Critical patent/DE634507C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H01F27/422—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers
    • H01F27/425—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers for voltage transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/62—Testing of transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Ac-Ac Conversion (AREA)

Description

Erweiterung des Verfahrens zum Prüfen von Stromwandlern gemäß Patent 615752 auf die Prüfung von Spannungswandlern mit Hilfe eines Normalwandlers Die in dem Patent 615752 beschriebenen Verfahren zum Prüfen von Stromwandlern mit Hilfe eines Normalwandlers gleichen Übersetzungsverhältnisses unter Benutzung einer Differentialschaltung stellen Nullmethoden dar, die es ermöglichen, die gegenseitigen Abweichungen nach Größe und Phase zweier annähernd gleicher Ströme, nämlich der Sekundärströme des Normalwandlers und des Prüflings, zu bestimmen. Diese Verfahren lassen sich auch dazu benutzen, die gegenseitigen Abweichungen nach Größe und Phase zweier annähernd gleicher Spannungen zu bestimmen, z. B. der Sekundärspannungen -zweier Spannungswandler,- wenn man diese Sekundärspannungen in Ströme verwandelt, und wenn man dann nach den oben beschriebenen Verfahren mißt. In den Abb. i und 2 sind zwei Beispiele dargestellt. N ist der Normalspannungswandler, X der Prüfling gleichen Nennübersetzungsverhältnisses. Über je einen V orwiderstand R,> führen die beiden Spannungen der Stromwandlerprüfschaltung zwei Ströme zu, derart, daß ihre Differenz den Diagonalzweig R durchfließt. Wenn man durch passende Bemessung von Größe und Phase der Vorwiderstände R, dafür sorgt, daß die relativen Phasen- und Größenverhältnisse der Ströme denjenigen der Spannung entsprechen, so lassen sich mit allen nach dem Differentialprinzip arbeitenden Verfahren zum Prüfen von Stromwandlern, vorzugsweise mit den Verfahren gemäß Patent 615752, auch die Fehler von Spannungswandlern ermitteln. An Stelle der Verfahren gemäß Patent 615 752 können auch Verfahren zum Prüfen von Stromwandlern nach Anspruch i oder 2 dieses Patents treten, bei denen zur Erzeugung einer um go° gegen den gewählten Bezugsstrom verschobenen Kompensationsspannung dieser Strom die Primärwicklung einer Luftgegeninduktivität durchfließt, deren Sekundärwicklung durch Widerstände veränderlich unterteilbar ist, und bei denen in diesen Sekundärkreis eine Spannung eingefügt wird, die von dem Spannungsabfall ,an einem Wechselstromwiderstand herrührt, der in den Sekundärkreis .eines primär ebenfalls vom Bezugsstrom durchflossenen Luftstromwandlerseingeschaltet ist. Weitere Abwandlungen ergeben sich, wenn der magnetische Kreis von Gegeninduktivität und Stromwandler oder nur eines von beiden Apparaten vollkommen eisengeschlossen ist oder durch einen Luftspalt und abgestuften Eisenquerschnitt unterbrochen wird.Extension of the method for testing current transformers according to patent 615752 to the testing of voltage transformers with the aid of a standard transformer The methods described in the patent 615752 for testing current transformers with the aid of a standard transformer with the same transformation ratio using a differential circuit represent zero methods that make it possible to mutually Determine deviations in size and phase of two approximately equal currents, namely the secondary currents of the standard converter and the test object. These methods can also be used to determine the mutual deviations according to size and phase of two approximately equal voltages, e.g. B. the secondary voltages - two voltage converters - if you convert these secondary voltages into currents, and if you then measure according to the method described above. Two examples are shown in Figs. I and 2. N is the normal voltage converter, X the test item with the same nominal transmission ratio. The two voltages supply the current transformer test circuit with two currents via a respective series resistor R, in such a way that their difference flows through the diagonal branch R. If, by appropriately dimensioning the size and phase of the series resistors R, it is ensured that the relative phase and size ratios of the currents correspond to those of the voltage, then all methods for testing current transformers based on the differential principle can be used, preferably with the methods according to Patent 615752, also determine the faults of voltage transformers. In place of the method according to patent 61 5 752, methods for testing current transformers according to claim 1 or 2 of this patent can also be used, in which this current flows through the primary winding of an air mutual inductance, the secondary winding of which flows through the primary winding of an air mutual inductance, in order to generate a compensation voltage shifted by go ° with respect to the selected reference current Resistances can be variably subdivided, and in which a voltage is inserted into this secondary circuit, which comes from the voltage drop across an alternating current resistor, which is switched into the secondary circuit of an air current converter through which the reference current also primarily flows. Further modifications arise when the magnetic circuit of mutual inductance and current transformer or only one of the two devices is completely iron-closed or is interrupted by an air gap and graduated iron cross-section.

In Abb.2 speisen die Sekundärspannungen über Vorwiderstände R,# die Primärwicklungen kleine- Stromwandler W, deren Sekundärwicklungen an die bisherige Stromwandler--prüfschaltung angeschlossen werden. Man kann Wandler und -Vorwiderstände so abgleichen, daß der im Diagonalzweig R fließende Differenzstrom nach Größe und Phase .&r Differenaspannung der Spannungswandler ent= .. spricht. Etwaige Ungleichheiten der Be-: lastungskreise lassen sich durch Vertauschen uhd wiederholte Messungen beseitigen.In Fig.2 the secondary voltages are fed via series resistors R, # die Primary windings small- current transformer W, their secondary windings connected to the previous current transformer test circuit. You can convert and - adjust resistors so that the differential current flowing in the diagonal branch R. according to size and phase. & r differential voltage of the voltage transformer corresponds to. Any inequalities in the load areas can be eliminated by swapping uhd eliminate repeated measurements.

Claims (1)

PATENTANSPRÜCHE: i. Erweiterung des Verfahrens zum Prüfgin von Stromwandlern gemäß Patent 615 752 auf die Prüfung von Spannungswandlern mit Hilfeeines Normalwandlers, dadurch gekennzeichnet, daß die Sekundärspannungen von Normalspannungswändler und Prüfling in Ströme von gleichen Phasen- und Größenverhältnissen verwandelt werden, wie sie die Spannungen zueinander haben, und daß diese Ströme den Stromwandlerprüfschaltüngen sinügemäß zugeführt werden. z. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß bei der benutzten Differentialschaltung zum Prüfen von Stromwandlern zwecks Erzeugung -einer veränderlichen, um 9o° gegen den gewählten Bezugsstrom verschobenen Kompensationsspannung dieser Strom die Primärwicklung einer Luftgegeninduktivität durchfließt, deren Sekundärwicklung durch Widerstände veränderlich unterteilbar ist, und daß in diesen Siekundärkreis eine Spannung eingefügt wird, die von dem Spannungsabfall an einem Wechselstromwiderstand herrührt, der in den Sekundärkreis .eines primär ebenfalls vom Bezugsstrom durchflossenen Luftstromwandlers eingeschaltet ist. 3. Verfahren nach Anspruch a, dadurch gekennzeichnet, daß der magnetische Kreis von Gegeninduktivität und Stromwandler oder nur eines von beiden Apparaten vollkommen eisengeschlossen ist oder durch einen Luftspalt und abgestuften Eisenquerschnitt unterbrochen wird. ¢. Verfahren nach Anspruch i bis 3, dadurch gekennzeichnet, daß die Umwandlung der Sekundärspannungen von Normal.spannungswandler und Prüfling entweder unmittelbar über Wechselstromvorwiderstände oder unter Zwischenschaltung von Strom- oder Spannungswandlern erfolgt. PATENT CLAIMS: i. Extension of the method for testing current transformers according to patent 615 752 to the testing of voltage transformers with the help of a standard transformer, characterized in that the secondary voltages of the standard voltage transformer and the test object are converted into currents of the same phase and size ratios as the voltages have to one another, and that these currents are fed to the current transformer test circuits in accordance with the rules. z. Method according to claim i, characterized in that in the differential circuit used for testing current transformers for the purpose of generating a variable compensation voltage shifted by 90 ° with respect to the selected reference current, this current flows through the primary winding of an air mutual inductance, the secondary winding of which can be variably subdivided by resistors, and that A voltage is inserted into this secondary circuit, which comes from the voltage drop across an alternating current resistor, which is switched into the secondary circuit, an air flow converter through which the reference current also flows. 3. The method according to claim a, characterized in that the magnetic circuit of mutual inductance and current transformer or only one of the two devices is completely iron-locked or is interrupted by an air gap and graduated iron cross-section. ¢. Method according to Claims 1 to 3, characterized in that the conversion of the secondary voltages of the normal voltage converter and the test object takes place either directly via alternating current series resistors or with the interposition of current or voltage converters.
DEH138519D 1933-07-29 1933-12-31 Extension of the method for testing current fluctuations according to patent 615752 to the testing of voltage converters with the help of a standard converter Expired DE634507C (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
DEH136984D DE615752C (en) 1933-07-29 1933-07-29 Method for testing current transformers with the aid of a standard transformer with the same transmission ratio using a differential circuit
DEH138521D DE618647C (en) 1933-07-29 1933-12-31 Method for testing voltage converters with the aid of a standard converter with the same transmission ratio using a differential circuit
DEH138519D DE634507C (en) 1933-07-29 1933-12-31 Extension of the method for testing current fluctuations according to patent 615752 to the testing of voltage converters with the help of a standard converter
CH176677D CH176677A (en) 1933-07-29 1934-07-09 Procedure for testing current transformers.
AT141447D AT141447B (en) 1933-07-29 1934-07-13 Arrangement for testing current transformers.
GB22038/34A GB424810A (en) 1933-07-29 1934-07-27 Method of testing current transformers
CH181579D CH181579A (en) 1933-07-29 1934-08-04 Procedure for testing voltage transformers.
CH179343D CH179343A (en) 1933-07-29 1934-08-04 Procedure for testing current transformers.
CH176982D CH176982A (en) 1933-07-29 1934-08-04 Procedure for testing voltage transformers.
AT142842D AT142842B (en) 1933-07-29 1934-08-07 Arrangement for testing current transformers.
AT144602D AT144602B (en) 1933-07-29 1934-08-07 Arrangement for testing current transformers.
GB37197/34A GB439661A (en) 1933-07-29 1934-12-28 Method of testing voltage transformers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEH136984D DE615752C (en) 1933-07-29 1933-07-29 Method for testing current transformers with the aid of a standard transformer with the same transmission ratio using a differential circuit
DEH138519D DE634507C (en) 1933-07-29 1933-12-31 Extension of the method for testing current fluctuations according to patent 615752 to the testing of voltage converters with the help of a standard converter

Publications (1)

Publication Number Publication Date
DE634507C true DE634507C (en) 1936-08-28

Family

ID=34066201

Family Applications (2)

Application Number Title Priority Date Filing Date
DEH136984D Expired DE615752C (en) 1933-07-29 1933-07-29 Method for testing current transformers with the aid of a standard transformer with the same transmission ratio using a differential circuit
DEH138519D Expired DE634507C (en) 1933-07-29 1933-12-31 Extension of the method for testing current fluctuations according to patent 615752 to the testing of voltage converters with the help of a standard converter

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEH136984D Expired DE615752C (en) 1933-07-29 1933-07-29 Method for testing current transformers with the aid of a standard transformer with the same transmission ratio using a differential circuit

Country Status (4)

Country Link
AT (3) AT141447B (en)
CH (3) CH176677A (en)
DE (2) DE615752C (en)
GB (2) GB424810A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038187B (en) * 1954-06-29 1958-09-04 Hartmann & Braun Ag Current transformer measuring device based on the principle of voltage compensation from Schering-Alberti
DE976857C (en) * 1955-04-20 1964-06-18 Licentia Gmbh Circuit arrangement for measuring the error sizes of current and voltage transformers

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028221B (en) * 1954-06-21 1958-04-17 Hartmann & Braun Ag Current transformer measuring device based on the principle of voltage compensation from Schering-Alberti
DE1027785B (en) * 1954-07-31 1958-04-10 Hartmann & Braun Ag Device for measuring the translation and angle error of current and voltage transformers
US2896156A (en) * 1956-05-04 1959-07-21 Superior Electric Co Transformer test circuit
AT389397B (en) * 1980-11-28 1989-11-27 Moser Glaser & Co Ag ERROR COMPENSATED VOLTAGE CONVERTER FOR HIGH VOLTAGE
CN103293507B (en) * 2012-03-02 2016-08-31 北京瑞恒超高压电器研究所(普通合伙) The online test method of current transformer error
CN103267958B (en) * 2013-04-27 2016-01-20 广东电网公司电力科学研究院 The circuit of measuring voltage transformer voltage coefficient and method
CN104155625B (en) * 2014-07-31 2016-04-20 国家电网公司 For the servicing unit of current mutual inductor with high transforming ratio field-checking in GIS
CN105044408B (en) * 2015-06-30 2017-12-19 国家电网公司 A kind of extra-high voltage detecting current transformer flows up device with high current
CN106226638A (en) * 2016-08-26 2016-12-14 四川和中电力科技有限公司 A kind of low voltage mutual inductor measurement loop state on_line monitoring system
CN107192974B (en) * 2017-07-19 2023-06-09 云南电网有限责任公司电力科学研究院 Integrated voltage and current standard transformer
CN109407034B (en) * 2018-12-12 2023-09-08 云南电网有限责任公司昆明供电局 Primary and secondary synchronous wiring device of large-current transformer
CN109975736B (en) * 2019-01-15 2024-02-06 红相股份有限公司 Mutual inductor error testing system in GIS based on frequency conversion anti-interference technology
CN111693925B (en) * 2020-07-20 2023-01-03 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Current transformer detection operation platform and multi-position top-speed current transformer calibration system
CN111948593B (en) * 2020-07-27 2023-07-28 国网浙江省电力有限公司营销服务中心 Exciting current measuring method for current transformer
CN112068062B (en) * 2020-09-10 2023-01-03 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Mutual inductor calibration system and calibration method
CN114814706B (en) * 2022-06-23 2022-11-04 武汉磐电科技股份有限公司 Testing device and method for online self-calibration of mutual inductor
CN116338556B (en) * 2023-05-26 2023-09-15 上海置信电气有限公司 Error tracing device and method for wide-range standard current transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038187B (en) * 1954-06-29 1958-09-04 Hartmann & Braun Ag Current transformer measuring device based on the principle of voltage compensation from Schering-Alberti
DE976857C (en) * 1955-04-20 1964-06-18 Licentia Gmbh Circuit arrangement for measuring the error sizes of current and voltage transformers

Also Published As

Publication number Publication date
GB439661A (en) 1935-12-11
GB424810A (en) 1935-02-28
CH181579A (en) 1935-12-31
CH176982A (en) 1935-05-15
AT144602B (en) 1936-02-10
DE615752C (en) 1935-07-12
AT141447B (en) 1935-04-25
AT142842B (en) 1935-09-25
CH176677A (en) 1935-04-30

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