Explain steady-state stability, Electrical Engineering

Assignment Help:

Q. Explain Steady-State Stability?

The property of a power system that ensures that it will remain in equilibrium under both normal and abnormal conditions is known as power-system stability. Steady-state stability is concerned with slow and gradual changes, whereas transient stability is concerned with severe disturbances, such as sudden changes in load or fault conditions. The largest possible flow of power through a particular point, without loss of stability, is known as the steady-state stability limit when the power is increased gradually, and as the transient-stability limit when a sudden disturbance occurs.

For a generator connected to a system that is very large compared to its own size, the system in Figure can be used. The power-angle equation (neglecting resistances) for the system under consideration becomes

1008_Steady-State Stability.png

1783_Steady-State Stability1.png

where δgs is the angular difference between δg and δs , and X = Xd + Xe, with Xd being the direct-axis reactance of the synchronous generator. The power angle characteristic given by Equation is plotted in Figure. The peak of the power-angle curve, given by Pmax, is known as the steady-state power limit, representing the maximum power that can theoretically be transmitted in a stable manner. A machine is usually operated at less than the power limit, thereby leaving a steady-state margin, as otherwise even a slight increase in the angle δgs would lead to instability. Installing parallel transmission lines.


Related Discussions:- Explain steady-state stability

Name the 6 modes of operations of an 8253, Name the 6 modes of operations o...

Name the 6 modes of operations of an 8253 programmable interval timer. Mode 0: interrupt on terminal count Mode 1: hardware re -triggerable one-shot Mode 2: rate generato

Define addressing modes of 8085, Define addressing modes of 8085. a) Im...

Define addressing modes of 8085. a) Immediate addressing b) Register addressing c) Direct addressing d)  Indirect addressing e)  Implicit addressing

Advantages of a.c generator - the alternator, 1) only one pair of slip ring...

1) only one pair of slip rings are required (to energise the rotating field coil) regardless of the number of phases produced by the alternator (three phases is common because of t

Explain the usage of the output ports , Objective: To Understand the Usage ...

Objective: To Understand the Usage of the Output ports of PIC18F452 and make changes in the previous code accordingly. Procedure: 1. Open the p1.asm program from t

Lhld load hl pair direct instruction, LHLD  Load  HL Pair Direct  Instru...

LHLD  Load  HL Pair Direct  Instruction This  instruction is used to copy the  content  of memory  location specified  by opened  in register L  and copy the content of next  m

Microprocessor system, A burglar alarm system is controlled by a microproce...

A burglar alarm system is controlled by a microprocessor system. The system has three independent circuit each consisting of 7 passive infra red sensors. The controller can be prog

Partial fraction expansion for z transformation, how should I calculate in...

how should I calculate inverse z transform of 1/0.729z^-1+0.729z+1.5314

Compute the mean torque, Q. A rotating electric machine with uniform air ga...

Q. A rotating electric machine with uniform air gap has a cylindrical rotor winding with inductance L 2 =1 H and a stator winding with inductance L 1 =3H. Themutual inductance va

Evaluate the transfer function, Since dc motors of various types are used e...

Since dc motors of various types are used extensively in control systems, it is essential for analytical purposes that we establish a mathematical model for the dc motor. Let us co

Power semiconductor-controlled drives, Q. Explain Power semiconductor-contr...

Q. Explain Power semiconductor-controlled drives? Power electronics deals with the applications of solid-state electronics for the control and conversion of electric power. Con

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd