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SU570850A1 - Device for measuring phase shift between current and voltage - Google Patents

Device for measuring phase shift between current and voltage

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Publication number
SU570850A1
SU570850A1 SU7402018571A SU2018571A SU570850A1 SU 570850 A1 SU570850 A1 SU 570850A1 SU 7402018571 A SU7402018571 A SU 7402018571A SU 2018571 A SU2018571 A SU 2018571A SU 570850 A1 SU570850 A1 SU 570850A1
Authority
SU
USSR - Soviet Union
Prior art keywords
current
voltage
phase shift
measuring phase
measuring
Prior art date
Application number
SU7402018571A
Other languages
Russian (ru)
Inventor
Лейб Шмаевич Херец
Виктор Хемович Полещук
Original Assignee
Kherets Lejb Sh
Poleshchuk Viktor Kh
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 by Kherets Lejb Sh, Poleshchuk Viktor Kh filed Critical Kherets Lejb Sh
Priority to SU7402018571A priority Critical patent/SU570850A1/en
Application granted granted Critical
Publication of SU570850A1 publication Critical patent/SU570850A1/en

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  • Measuring Phase Differences (AREA)

Description

1one

Изобретение относитс  к электроизмерительной технике и может использоватьс  в электроэнергетике .This invention relates to electrical measuring technology and can be used in electric power industry.

Известно устройство измерени  сдвига фаз между током и напр жением, представл ющее собой сочетание логометра ферродинамической или электродинамической системы с реактивными элементами.A device for measuring the phase shift between current and voltage, which is a combination of a ferrodynamic or electrodynamic system ramometer with reactive elements, is known.

Недостаток такого устройства - значительна  зависимость показаний от измерени  частоты и тока, а также сложность измерительного механизма.The disadvantage of such a device is a significant dependence of the readings on the measurement of frequency and current, as well as the complexity of the measuring mechanism.

Известно также устройство измерени  сдвига фаз, содержащее миллиамперметр посто нного тока, стабилизированный выпр митель в цепи питани , два пик-трансформатора, два диода, конденсатор и резисторы.It is also known a device for measuring the phase shift, containing a milliammeter of direct current, a stabilized rectifier in the power supply circuit, two peak transformers, two diodes, a capacitor and resistors.

Невоспримичивость этого устройства к знаку угла сдвига фазы не позвол ет определить по показани м характера (индуктивный или емкостной) нагрузки в цепи. Применение в этом устройстве добавочного искусственного сдвига вызывает по вление дополнительной погрешности от частоты.The immunity of this device to the sign of the phase angle does not allow one to determine from the indications of the nature (inductive or capacitive) of the load in the circuit. The use of an additional artificial shift in this device causes the appearance of an additional error of frequency.

Цель изобретени  - повышение точности устройства.The purpose of the invention is to improve the accuracy of the device.

Это достигаетс  тем, что предлагаемое устройство измерени  сдвига фаз между током и напр жением снабжено тиристором и добаБочным резистором, причем первый, второй иThis is achieved by the fact that the proposed device for measuring the phase shift between current and voltage is equipped with a thyristor and an additional resistor, the first, second and

третий резисторы и тиристор ооразуют мост, одна из диагоналей которого подключена к стабилизированному выпр мителю, а в другую включен миллиамперметр посто нного тока с двухсторонней шкалой с добавочным резистором , через последовательно соединенный первый диод и конденсатор подключена к аноду и катоду тиристора вторина  обмотка первого пик-трансформатора, котора  совместно с первым диодом зашунтирована четвертым резистором, управл ющий электрод и катод тиристора через последовательно соединенный п тый резистор подключены к вторичной обмотке второго пик-трансформатора, котора  совместно с п тым резистором зашунтирована вторым диодом, причем обща  точка соединени  вторичных обмоток первого и второго пик-трансформаторов соответствует их генераторному и негенераторному выводам,the third resistors and the thyristor orazut bridge, one of the diagonals of which is connected to a stabilized rectifier, and the other is connected to a milliammeter DC with a two-sided scale with an additional resistor, through a series-connected first diode and a capacitor connected to the anode and cathode of the thyristor secondary winding of the first peak a transformer which, together with the first diode, is shunted by a fourth resistor, the control electrode and the cathode of the thyristor are connected via a series-connected fifth resistor to the second the secondary winding of the second peak transformer, which, together with the fifth resistor, is shunted by a second diode, the common connection point of the secondary windings of the first and second peak transformers corresponds to their generator and non-generator terminals,

Па чертеже представлена схема предлагаемого устройства измерени  сдвига фаз между током и напр жением.The drawing shows a diagram of the proposed device for measuring the phase shift between current and voltage.

Устройство содерл ит первый и второй пиктрансформаторы 1 и 2, стабилизированныйThe device contains the first and second pictransformers 1 and 2, stabilized

выпр митель 3, миллиамперметр 4 посто нного тока с двухсторонней шкалой, тиристор 5, первый и второй диоды 6 и 7, конденсатор 8, резисторы 9-13 и добавочный резистор 14. Во вторичных обмотках ник-трансформаторов 1 и 2 в момент перехода напр жени  илиrectifier 3, milliammeter 4 direct current with two-sided scale, thyristor 5, first and second diodes 6 and 7, capacitor 8, resistors 9-13 and additional resistor 14. In the secondary windings of nick-transformers 1 and 2 at the time of voltage transfer or

SU7402018571A 1974-04-22 1974-04-22 Device for measuring phase shift between current and voltage SU570850A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU7402018571A SU570850A1 (en) 1974-04-22 1974-04-22 Device for measuring phase shift between current and voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7402018571A SU570850A1 (en) 1974-04-22 1974-04-22 Device for measuring phase shift between current and voltage

Publications (1)

Publication Number Publication Date
SU570850A1 true SU570850A1 (en) 1977-08-30

Family

ID=20582786

Family Applications (1)

Application Number Title Priority Date Filing Date
SU7402018571A SU570850A1 (en) 1974-04-22 1974-04-22 Device for measuring phase shift between current and voltage

Country Status (1)

Country Link
SU (1) SU570850A1 (en)

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