PL412680A1 - Method for measuring effective value and initial phase of sinusoidal alternating voltage and the system for measuring the effective value and initial phase of sinusoidal alternating voltage - Google Patents

Method for measuring effective value and initial phase of sinusoidal alternating voltage and the system for measuring the effective value and initial phase of sinusoidal alternating voltage

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Publication number
PL412680A1
PL412680A1 PL412680A PL41268015A PL412680A1 PL 412680 A1 PL412680 A1 PL 412680A1 PL 412680 A PL412680 A PL 412680A PL 41268015 A PL41268015 A PL 41268015A PL 412680 A1 PL412680 A1 PL 412680A1
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PL
Poland
Prior art keywords
measuring
alternating voltage
voltage
initial phase
value
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PL412680A
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Polish (pl)
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PL231678B1 (en
Inventor
Przemysław Krzyk
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Politechnika Krakowska im. Tadeusza Kościuszki
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Application filed by Politechnika Krakowska im. Tadeusza Kościuszki filed Critical Politechnika Krakowska im. Tadeusza Kościuszki
Priority to PL412680A priority Critical patent/PL231678B1/en
Publication of PL412680A1 publication Critical patent/PL412680A1/en
Publication of PL231678B1 publication Critical patent/PL231678B1/en

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Abstract

W sposobie i układzie mierzy się cztery wartości chwilowe napięcia sinusoidalnie zmiennego w równych odstępach czasu mniejszych od 1/2 okresu T napięcia otrzymując odpowiednio wyniki u1 = u(t1), u2 = u(t2), u3 = u(t3), u4 = u(t4), gdzie t1, t2, t3, t4 są kolejnymi czasami pomiarów. Na podstawie otrzymanych z pomiarów wyników oblicza się wartość parametru pomocniczego θ, a następnie oblicza się wartość skuteczną i fazę początkową napięcia sinusoidalnie zmiennego. Układ zawiera przetwornik analogowo cyfrowy mierzący wartość sygnału napięciowego o wartości proporcjonalnej do napięcia na zaciskach wejściowych. Wynik pomiaru z przetwornika analogowo cyfrowego przesyłany jest do kolejki połączonych szeregowo czterech buforów jednostek pamięci, zachowujących wyniki ostatnich czterech pomiarów, które połączone są z układem obliczania parametrów, który oblicza wartość parametru pomocniczego θ, a następnie oblicza wartość skuteczną i fazę początkową napięcia sinusoidalnie zmiennego, po zmierzeniu pierwszych czterech wartości chwilowych napięcia, oraz po zmierzeniu każdej kolejnej wartości chwilowej napięcia. Obliczone wartości parametrów napięcia sinusoidalnie zmiennego, układ przesyła do interfejsu układu pomiarowego.In the method and system, four instantaneous values of sinusoidally alternating voltage are measured at equal time intervals smaller than 1/2 of the period T of the voltage, obtaining the results u1 = u(t1), u2 = u(t2), u3 = u(t3), u4 = u(t4), where t1, t2, t3, t4 are subsequent measurement times. Based on the results obtained from the measurements, the value of the auxiliary parameter θ is calculated, and then the RMS value and the initial phase of the sinusoidally alternating voltage are calculated. The system contains an analog-to-digital converter measuring the value of a voltage signal proportional to the voltage at the input terminals. The measurement result from the analog-to-digital converter is sent to a queue of four buffers of memory units connected in series, storing the results of the last four measurements, which are connected to the parameter calculation system, which calculates the value of the auxiliary parameter θ, and then calculates the effective value and the initial phase of the sinusoidally alternating voltage, after measuring the first four instantaneous voltage values, and after measuring each subsequent instantaneous voltage value. The calculated values of the sinusoidally alternating voltage parameters are sent by the system to the interface of the measuring system.

PL412680A 2015-06-11 2015-06-11 Method for measuring effective value and initial phase of sinusoidal alternating voltage and the system for measuring the effective value and initial phase of sinusoidal alternating voltage PL231678B1 (en)

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PL412680A PL231678B1 (en) 2015-06-11 2015-06-11 Method for measuring effective value and initial phase of sinusoidal alternating voltage and the system for measuring the effective value and initial phase of sinusoidal alternating voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL412680A PL231678B1 (en) 2015-06-11 2015-06-11 Method for measuring effective value and initial phase of sinusoidal alternating voltage and the system for measuring the effective value and initial phase of sinusoidal alternating voltage

Publications (2)

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PL412680A1 true PL412680A1 (en) 2016-12-19
PL231678B1 PL231678B1 (en) 2019-03-29

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PL412680A PL231678B1 (en) 2015-06-11 2015-06-11 Method for measuring effective value and initial phase of sinusoidal alternating voltage and the system for measuring the effective value and initial phase of sinusoidal alternating voltage

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PL231678B1 (en) 2019-03-29

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