**PROBLEMS USING NEWTON-RAPHSON AND FAST DECOUPLED**

**METHOD**

**AIM:**

(i} To understand the following for medium and large scale power systems.

a) Mathematical formulation of load flow problem in real variable form.

b) Newton Raphson method of load flow (NRLF) solution.

c) Fast decoupled method of load flow (FDLP) solution.

(ii) To become proficient in the usage of software for practical problem solving in the

areas of power system planning and operation.

(iii) To become proficient in the usage of software in solving problems using Newton-

Raphson and Fast decoupled load flow methods.

**OBJECTIVES:**

(i) To investigate the convergence characteristics of load flow solutions using NRLF and FDLP algorithms for different sized systems and compare the same with that of GSLF algorithm.

(ii) To investigate the effect of variation of voltage control parameters such as generator voltage magnitude setting, off nominal tap ratio of transformer and MVAR injections of shunt capacitors/inductor on the voltage profile and transmission loss of the system.

(iii) To assess the effect of single outage contingencies such as a line outages and generator outages.

(iv) To investigate the convergence of load flow solution of a two bus system for different load conditions, understand the existence of maximum load ability condition and to verify the both, numerically (using load flow package) analytically using the two bus system equations.

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