Presentation on theme: "SUBMITTED BY DEBADATTA PATRO (090101EER024) MADHU SUDAN SAMANTRAY BHUYAN (090101EER041) G. ANIL KUMAR (090101EER059) ANIL KUMAR SAHU (090101EER012) SUBHRANSU."— Presentation transcript:
SUBMITTED BY DEBADATTA PATRO (090101EER024) MADHU SUDAN SAMANTRAY BHUYAN (090101EER041) G. ANIL KUMAR (090101EER059) ANIL KUMAR SAHU (090101EER012) SUBHRANSU KUMAR SAHU (090101EER001) PROJECT GUIDE ASST. PROF. SUCHITA LAKRA
Power factor (PF) is a measurement by which we can measure the efficiency of the electrical equipments as well as ac electric power system on the basis of electrical energy consumption. It determines power quality. Due to inductive loads, the apparent power becomes greater than the real power that increases the phase difference between voltage and current. So, the power factor drops below unity and the system becomes less efficient. Our project deals with correcting the power factor to make it closer to unity.
It Is a measure of how effectively the current is being converted into useful work output It Is a good indicator of the effect of the load current on the efficiency of the supply system. Power factor = cos Ѳ, where ‘ Ѳ ’ is the phase angle power factor=P/S, where p=real power, s=apparent power.
KVA KW KVAR Apparent power Real power Reactive power
Since power factor is defined as the ratio of KW to KVA, we see that low power factor results when KW is small in relation to KVA. Inductive loads are responsible for high KVAR resulting a low power factor. KVA KVAR KVA KVAR KW KW So, inductive loads (with large KVAR) result in low power factor.
A high power factor is generally desirable in a transmission system to reduce transmission losses. Generally power factor correction is for two type of loads :linear load, Non linear load. Power factor correction brings the power factor of an AC power circuit closer to 1 by supplying reactive power.
Power line Incandescent bulbs Microcontroller Atmega 32 Capacitor bank Switching drives relay LCD display Current transformer Power factor transducer : LTPFU Power supply (Block Diagram of the existing system) (Block Diagram of the proposed system)
E QUIPMENTS REQUIRED FOR HARDWARE IMPLEMENTATION P OWER F ACTOR T RANSDUCER Power Factor Transducers measure the power Factor in 1 Phase and 3 Phase electrical systems. The resulting output signal is directly proportional to the system power factor. The output can be connected to Recorders for display, analysis or control. In our project we are using a power factor transducer of model: LTPFU.
Circuit I/P Voltage I/P CurrentFrequencyOutputAux. Power ABCYABCY 1 2 W 3 3 W 3 4 W Other ABYABY 110V 220V Other ABYABY 1A 5A Other ABAB 50Hz 60Hz ABCDEFYABCDEFY 0~10mA DC 0~20mA DC 4~20mA DC 0~5V DC 1~5V DC 0~10V DC Other ACDENYACDENY AC 110/220V (Dual Power) DC 24V DC 110V DC 125V * Self-Power Mode Other Configuration Of Power Factor Transducer
MICROCONTROLLER Here we are using a atmega16 microcontroller
When power factor improvement capacitor banks are designed and arranged properly, the PF correction scheme becomes efficient. The capacitor bank is comprised of individual capacitor elements. salient features of PF correction capacitor banks are extremely high reliability with self-healing capabilities; capable of controlling the requirement of kVARs to achieve PF as close as unity; compact, efficient and long service life; protected against over-voltage, over-current, over temperature, switching surges.
LCD interfacing Program LCD interfacing Program ADC Programming ADC Programming
Here soldering were done on 16*2 LCD for interface with microcontroller 16 pin of LCD were connected with AVR burner.Pin1-GND,Pin2-VCC,Pin3-GND,Pin4-PD0.4(5 th pin PORT D), Pin5-PD0.5(6 th pin PORT D), Pin6-PD0.6(7 th pin PORT D), Pin7-PA0.0(1 th pin PORT A), Pin8-PA0.1(2 th pin PORT A),Pin9-PA0.2(3 th pin PORT A), Pin10- PA0.3(4 th pin PORT A), Pin11- PA0.4(5 th pin PORT A),Pin12- PA0.5(6 th pin PORT A), Pin13- PA0.6(7 th pin PORT A), Pin14PA0.7(8 th pin PORT A),Pin15-VCC- (9 th pin PORT C), Pin16- GND-(10 th pin PORT A) Connection were done as per the function of the LCD and microcontroller. Then we build the program in AVR-4 Software with no error and we got the output