Abstract
The stability of the power system is destroyed, will cause a large number of users power outage, even cause the collapse of the whole system, extremely serious consequences. Based on the analysis in single machine infinite system as an example, when at the f point two phase ground fault occurs, the fault lines on either side of the circuit breaker tripping resection at the same time,respectively by two kinds of calculation and simulation methods of system transient stability analysis, the conclusion are consistent. and the simulation analysis is superior to calculation analysis.
Highlights
The failure in stability of the power system would cause power outage to many users or even collapse of the whole system, bringing very serious consequences
After the power system is subject to a large disturbance, the imbalance between mechanical torque and electromagnetic torque on the generator rotor leads to a change in the relative position between synchronous generator rotors, i.e. the current, voltage and electromagnetic power of the system are changed as the relative angle between generator potentials is changed
Taking the diagram of single-machine infinite bus system shown in Fig. 1 as an example, the transient stability of the power system is calculated after the faulty line is cut off through simultaneous tripping of circuit breakers on both sides of the line in the case of two-phase ground fault at the point f
Summary
The failure in stability of the power system would cause power outage to many users or even collapse of the whole system, bringing very serious consequences. The study on the transient stability of the power system refers to researching whether parallel operated synchronous generators can still operate synchronously and the load is normal after the power system is subject to a large disturbance in an operation mode. The reasons for the large disturbance mainly include: short circuit fault; turning on or off main components of the system, such as generator, transformer and line; sudden change in load, such as addition of large users. The short-circuit fault is usually used to check the transient stability of the system as it is the most severe among them
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
