Method for measuring angular velocity of synchronous generator for double-input power system stabilizer

Abstract

The invention discloses a method for measuring the angular velocity of a synchronous generator for a double-input power system stabilizer, and the method comprises the following steps: 1) measuring the voltage of the synchronous generator, measuring the current of the synchronous generator, and generating a signal of the synchronous generator Xq; 2) synthesizing the internal potential of the synchronous generator by using the voltage and current of the synchronous generator; and 3) measuring a frequency signal of the internal potential of the synchronous generator. The method can be used for accurately measuring the angular velocity signals of double-input power system stabilizers such as, PS2A/2B, PSS3B and PSS4B, and through RTDS tests and field verification, an excitation system can provide enough damping when the synchronous generator generates low-frequency oscillation, thereby guaranteeing the stable operation of a power system. Moreover, the measurement precision is high.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for accurate measurements on an asynchronous machine called a double-infeed power system (DIPS) that generates electrical energy from two different sources - one being connected through generators or converters. By comparing these signals together they are able to calculate how much torque needs to be applied at any given time while also ensuring stability over varying frequencies.

Problems solved by technology

This patents discusses different techniques for reducing fluctuating frequencies in generational synchronous machines during normal operations while maintaining their performance at reduced levels. These include enhancing the machine's ability to reduce harmonic disturbances without compromising overall efficiency or security standards. Additionally, they also focus on identifying specific parts of the plant where the generator can operate effectively due to improved energy balance and reduction of noise emissions. Overall, this technical problem addressed in the patented text involves developing efficient and reliable solutions for controllers in order to prevent damage from lower level shaft torsional resonances generated by the generator rotors themselves.

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