Nheyo yemagetsi sensor inosanganisira kushandura maparamendi emagetsi seazvino uye voltage kuita masaini anoyerwa emagetsi, uye kuwana ma paramita anodiwa kuburikidza nekugadzirisa. Inotevera inhanho ine hudzamu-ne{2}}nhanho tsananguro yemisimboti yekushanda kwayo:
1. Yazvino kuyerwa musimboti
Nzira yeShunt resistor : Nekubatanidza yakaderera-resistance resistor (shunt) munhevedzano, vhoriyamu painodzivirira inoyerwa. Inoshanda kuDC kana kuti yakaderera-frequency AC uchishandisa mutemo weOhm, asi hombe iripo inogona kukonzera kudziyisa.
Hall effect sensor Inoshanda kune AC / DC uye ine yakanaka yekuzviparadzanisa nevamwe.
Current transformer (CT): Kubva pane electromagnetic induction, inoshandura yakakura ikozvino padivi rekutanga kuita diki ikozvino padivi rechipiri. Inoshanda chete kune AC kuyerwa.
Rogowski coil: Iyo toroidal coil isina magineti musimboti. Iyo inoburitsa voltage nekuita iyo ikozvino shanduko mwero uye inowana ikozvino mushure mekubatanidza. Inokodzera kukwirisa-kuwanda kana kukwirisa{{3}ikozvino AC scenarios uye ine anti-kuzara kwakasimba.
2. Voltage kuyerwa musimboti
Resistor voltage divider nzira: Kuburikidza neyakatevedzana resistor voltage divider network, iyo yakakwira voltage inodzikiswa uye kuyerwa. Hunodiwa
Voltage transformer (PT): Yakafanana neCT, inoshandura yakakwira voltage kusvika yakaderera voltage uye inokodzera AC masisitimu.
Capacitor voltage divider method : High voltage inoyerwa pachishandiswa capacitor voltage divider, iyo inowanzoitika mu-frequency kana pulse voltage sicenarios.
3. Signal conditioning uye kugadzirisa
Kuwedzera nekusefa
Analogi-ku-shanduko yedhijitari (ADC): Shandura masaini eanalogi kuita masiginecha edhijitari, uye mwero wesampling unofanira kuenderana neNyquist theorem (inoda kusvika kaviri kupfuura frequency yechiratidzo).
4. Kuyera kwesimba
Sampling the instantaneous voltage and current at the same time, kuvawedzera kuti vawane simba repakarepo, uye kuvabatanidza kuti vawane avhareji inoshanda simba. Muchikamu che-nhatu, nzira mbiri-dzemamita kana kuti nhatu-mamita nzira inogona kushandiswa kuverenga simba rose.
5. Kuzviparadzanisa nevamwe uye kuchengeteka
Magnetic isolation: Shandisa mutual inductors kana magineti coupling zvishandiso kuparadzanisa yakakwirira uye yakaderera voltage maseketi.
Optical isolation: Tumira zvikwangwani kuburikidza nekubatanidza maziso kuvharira kubatana kwemagetsi.
Fiber optic tekinoroji: Shandisa iyo Faraday mhedzisiro kuyera ikozvino, ine yakanakisa insulation kuita, yakakodzera kune yakakwira voltage nharaunda.