تنظیم کتنده ولتاژ اتوماتیک
Abstract
1- NTRODUCTION
2- The current system
3- Automatic voltage regulator
4- Mathematical Modeling of avr system
5- CONCLUSION
REFERANCES
Abstract
A power system is important for today’s infrastructure which is controlled by various methods and to handle a system smartly it is necessary to know about its various parameters and role played by them. The objective of this project is to improve the stability by using power system stabilizer, automatic voltage regulator and Governor. In power system it is necessary to achieve effective stability and good regulation of various devices and hence AVR are extensively used. But AVR should be coupled with any appropriate controller to overcome slow response due to disturbance which will provide efficient stability. In power generating system, AVR controller with PID is very necessary for controlling the voltage of power generation system due to change in load. Voltage fluctuation is mainly due to the variation in the load and if there is a variation in the voltage then it can damage the equipment so it is necessary to stabilize the voltage, so AVR is used in the system. The systems modeled consist of the amplifier, exciter, sensor & stabilizer or PID controller. Simulation results of the AVR system using MATLAB are presented.
INTRODUCTION
Modern power systems to operate at a standard voltages. Power systems, this device has been designed to work with predetermined values of the voltage and frequency of operation of the system is required to operate the steady state condition. The voltage profile during the operation of the upcoming elections, it is desirable to limit the need to allow all times. The load on the system, not all the time it is always different and it is constantly changing load conditions, hence the automatic excitation system can be applied to stabilize the voltage in the power system as the automatic voltage regulator that can get through the automatic excitation system sense.
The generation of electricity as the system voltage changes in a system interconnected electric network, as well as customer premises only results. Quality is the result of the transfer of power to the consumers. Generally, according to a consistent standard voltage and frequency is irregular and no fluctuation in the frequency where the power quality of the power. In the case of a power pole system, but the system affects the speed of alternators and results as well as the overall power system frequency variation of real power and reactive fault not only because of the weight and effect on the voltage. In order to restore the balance of the system, the voltage regulator is used with the reactive power compensator. Generator excitation system is constantly required to meet the demand for reactive power regulation; which will minimize the system buses of different voltages fluctuating beyond the prescribed limits. Customer area Production units and the system voltage and frequency fluctuates greatly such as threephase consumers are affected. Whatever the difference between the input voltage at the end of the customer even though most electrical and electronic equipment, which are run by the voltage stabilizers produce voltage keeps constant. Although some electronic devices have inbuilt voltage stabilizer for voltage fluctuation restrictions. Power Center, voltage regulators are used to keep the voltage generator produces the limits allowed.