Three-phase energy meter gaw, masum-phase AC circuit ni hta n-gun lang ai lam hpe shadawn na matu lang ai power system ni hta ahkyak ai jak langai rai nga ai. Shi hpe n-gun kaba ra ai hpaga lam, hpaga lam, nta kaba ni hta grai lang ai.Shi a bungli galaw ai ladat gaw electromagnetic induction (sh) electronic hpaji masa hpe madung tawn nna, three-phase voltage hte current a prut prut hpe hkrak shadawn nna aten ladaw hta shingdaw nna jai lang ai n-gun hpe sawn la ai. Ndai laika hta, three-phase energy meter a madung bungli galaw ai ladat, madung daw ni, bungli galaw ai ladat ni hpe hkrak tup tsun dan na re.
Masum-Phase N-gun Meter a Madung Tara
Three-phase n-gun shadawn jak a madung bungli gaw masum-phase AC power hta n-gun jai lang ai hpe shadawn na matu re. Madung tara gaw, three-phase voltage hte current signal ni hpe mu tam nna, shanhte a kalang ta byin pru wa ai product hpe sawn la nhtawm, aten ladaw hte maren shingdaw nna, yawng a n-gun hpe lu la na matu re. Three-phase power system ni gaw, laksan hku nna, shagan (Y) shing nrai, delta (Δ) matut mahkai ai lam ni hpe lang nna, n-gun shadawn ai ni gaw, hkrak hkrak shadawn lu na matu, n bung ai wiring masa ni hpe hkan sa ra ai. Wan n-gun hpe sawn la na matu formula gaw:
Wan n-gun (E)=wan n-gun (U) × ya aten (I) × n-gun shadawn shadang (cosφ) × aten (t)
Three-phase wan n-gun shadawn jak gaw, dai phase masum a voltage hte current hpe kalang ta shadawn nna, phase langai hte langai a n-gun hpe sawn la nhtawm, jahtum e wan n-gun yawng hpe shinggyin la lu ai.
Masum-Phase wan n-gun shadawn jak a madung daw ni
Three-phase wan n-gun meter hta madung hku nna lawu na ahkyak ai arung arai ni lawm ai:
1.Voltage Sample Hkrang
Voltage sampling unit gaw, n-gun garan ai resistor (sh) n-gun galai shai ai (PTs) ni hpe lang nna, 3-phase n-gun n-gun hpe lu la nna, meter galaw lu ai n-gun n law ai n-gun n-gun ni de galai shai kau ya ai. Ndai daw gaw, voltage hpe hkrak hkrak hte shim lum ai hku shadawn lu hkra galaw ya ai.
2.Ya aten na Sample Unit
Ya aten na sample hkam la ai unit gaw, n-gun kaba ai hpe n-gun kaji ai signal ni de galai shai nna, hpang de galaw sa wa na matu, n-gun kaba ai transformer (CT) (sh) manganin shunt hpe lang ai. Ya aten na sample hpe grai hkrak hkra galaw ra ai, metering shut ai lam hpe shayawm lu na matu.
3.Metering Chip (sh) jak hte hti ai jak)
Dai ni na aten na wan n-gun meter masum lang lang ai (ADE series, ATT7022, etc. zawn re ai) ni gaw, wan n-gun hte wan n-gun a mahtai hpe lawan ladan sawn la lu nna, digital integration hpe galaw nna, tengman ai-ten n-gun hte shinggyin la lu ai n-gun hpe chye lu ai. Htunghking jak hte galaw ai 3-phase wan n-gun shadawn ai jak ni gaw, aluminum disk hpe shinggrup na matu wan n-gun hpe kam hpa nna, dai gaw gear mechanism hku nna shingjawng ai lam ni hpe shinggyin la nna n-gun hpe shadawn ai.
4.Microprocessor (MCU)
Smart meter ni hta, Microprocessor gaw data ni hpe galaw ai, shinggyin tawn ai, matut mahkai ai, madun dan ai lit ni hpe gun hpai nga ai. Metering chip kaw na data ni hpe hkap la nna, n-gun yawng hpe sawn la ai, matut mahkai module (RS485, carrier matut mahkai, shing nrai wireless matut mahkai zawn re ai) hpe hparan ya ai.
5.Madun ai hte matut mahkai ai lam Module
Wan n-gun meter ni hta, LCD display hpe lang nna, ya aten na wan n-gun, wan n-gun, wan n-gun, n-gun atsam zawn re ai shiga ni hpe madun dan ai. Ndai matut mahkai module gaw Modbus hte DL/T645 zawn re ai protocol ni hpe lang nna tsan tsan kaw na meter hti ai lam hpe madi shadaw ya ai majaw, wan company ni a matu wan n-gun lang ai lam hpe hkang lu na matu loi ai.
Masum-Phase N-gun Meter Magam Bungli
1.Signal hpe lu la ai
Energy meter gaw shawng nnan e, n-gun galai shai ai jak ni hte n-gun galai shai ai jak ni hpe lang nna, masum-phase n-gun hte n-gun n-gun hpe shinggyin la nna, n-gun hpe gram lajang ai lam (filtering hte amplification zawn re ai) hpe galaw ai.
2.Power hpe sawn la ai lam
Meter chip (sh) Microprocessor gaw, n-gun langai hte langai a kalang ta n-gun (P=U × I × cosφ) hpe sawn la nna, n-gun masum- hpe hpaw nna, n-gun yawng hpe lu la na re.
3.N-gun mahkawng da ai
Time integration hku nna (dai gaw aten ladaw hta n-gun hpe shinggyin la lu ai) energy meter gaw aten ladaw langai mi laman jai lang ai n-gun yawng hpe sawn la nna, kata na memory hta shinggyin tawn da ai.
4.Data hpe madun dan ai hte matut mahkai ai lam
Energy meter gaw LCD ntsa hta tengman ai-time data hpe madun dan nna, matut mahkai lam (RS485, infrared, shing nrai wireless zawn re ai) hku nna hparan hpareng ai ladat de data ni hpe upload galaw ya lu ai majaw, tsan tsan kaw nna yu reng lu ai hte meter hpe hti lu ai.
Masum-Phase N-gun Meter Amyu ni
1.Hpaji Masum-Phase N-gun Meter
Electromagnetic induction ngu ai npawt tara hpe jai lang nna, voltage hte current coil ni kaw na pru wa ai wan n-gun gaw aluminum disk langai a shinggrup ai lam hpe shadut ya ai. Dai hpang gear mechanism langai gaw, shingjawng ai lam a jahpan hpe shinggyin la nna, hpang jahtum e, n-gun lang ai lam hpe madun dan ai.
2.Electronic Masum-Phase N-gun Hkrang
Digital signal galaw ai hpaji masa hpe madung tawn nna, n-gun hte n-gun hpe sample galaw na matu, grai hkrak ai ADC (analog-to-digital converter) hpe jai lang nna, n-gun hpe Microprocessor hku nna sawn la ai majaw, grau hkrak ai hte hpaji rawng ai magam bungli ni hpe jaw ya lu ai.
3.Smart Masum-Phase N-gun Miter
Matut mahkai lam, tsan tsan kaw nna hkang lu ai, hte lit hpe hkang lu ai magam bungli ni hte hpawng de da ai majaw, lahkawng maga hku shadawn shadang (grid-matut mahkai ai photovoltaic wan n-gun shapraw ai zawn re ai) hpe madi shadaw ya ai majaw, smart grids ni a matu htuk manu ai.
Gadun dawk
Three-phase energy meter ni gaw masum-phase voltage hte current signal ni hpe hkrak hkrak shadawn lu ai, n-gun jai lang ai lam hpe sawn la, shinggyin la lu ai majaw, n-gun shadawn ai hte n-gun hpe hparan ai hta ra kadawn ai arung arai ni tai wa sai. Hpaji hparat rawt jat wa ai hte maren, electronic hte hpaji rawng ai three-phase energy meter ni gaw, moi na jak rung meter ni a shara hpe loi loi hte galai shai wa nna, grau hkrak ai, kam hpa mai ai, hpaji rawng ai hku bungli galaw lu ai atsam ni hpe jaw ya nga ai. Three-phase energy meter ni a bungli galaw ai ladat hpe chye na ai gaw, power system hpe grau kaja hkra hparan lu na matu hte n-gun atsam hpe grau kaja hkra jai lang lu na matu karum ya lu ai.
