Power System Operation and Control (2180909) MCQs

MCQs of State Estimation

Showing 31 to 40 out of 44 Questions
1 2 3 4 5
31.
When WLSE method is applied for line flow only algorithm then the estimation of ‘x’ for power system is
(a) xest=ATWA-1ATFxest,Z
(b) xest=ATWA-1ATWFxest,Z
(c) xest=ATWA-1ATW-1Fxest,Z
(d) None of above
Answer:

Option (b)

32.
The solution of state estimation in power system is affected by
(a) Ill conditioning
(b) Computer storage requirement
(c) Time requirement
(d) All of above
Answer:

Option (d)

33.
The condition number for Gain Matrix ‘G’ is define as
(a) Rank of Gain Matrix ‘G’
(b) Ratio of largest to smallest eigenvalue
(c) GG-1
(d) Inverse of G
Answer:

Option (b)

34.
The Gain Matrix ‘G’ of power system becomes more ill-condition if the condition number is
(a) Decrease in number
(b) Moderate in number
(c) Increase in number
(d) 1
Answer:

Option (c)

35.
Power system is divided into ______sub-system to reduce computational burden in state estimation
(a) 3
(b) 2
(c) 4
(d) 5
Answer:

Option (a)

36.
To derive external equivalency of power system, the subsystems are define as
(a) Internal
(b) External
(c) Boundary
(d) All of above
Answer:

Option (d)

37.
The method to find bad data detection is
(a) Fast decoupled
(b) Newton Raphson
(c) Chi square
(d) None of above
Answer:

Option (c)

38.
Identification of bad data is done by
(a) Calculate the elements for error in the measurement vector
(b) Calculate difference of error in the measurement vector
(c) Calculate the error in measurement vector
(d) None of above
Answer:

Option (a)

39.
Suppression of bad data is done by selecting estimation index function as
(a) Quadratic
(b) Non-quadratic
(c) Square
(d) None of above
Answer:

Option (b)

40.
Network observability is define as
(a) All data of power system is observed
(b) To find error in measurement data
(c) To check the given measurement data is sufficient for state estimation
(d) The ratio of measure data to error
Answer:

Option (c)

Showing 31 to 40 out of 44 Questions
1 2 3 4 5