## Application of Power System State Estimation

Application of Power System State Estimation: Application of Power System State Estimation – In real-time environment the state estimator consists of different modules such as network topology processor, observability analysis, state estimation and bad data processing. The network topology processor is required for all power system analysis. A conventional network topology program uses circuit breaker […]

## Network Observability and Pseudo Measurements

Network Observability and Pseudo Measurements: Network Observability and Pseudo Measurements – A minimum amount of data is necessary for State Estimation (SE) to be effective. A more analytical way of determining whether a given data is enough for SE is called observability analysis. It forms an integral part of any real time state estimator.The ability […]

## Treatment of Bad Data

Treatment of Bad Data: Treatment of Bad Data – The ability to detect and identify bad measurements is extremely valuable to a load dispatch centre. One or more of the data may be affected by malfunction­ing of either the measuring instruments or the data transmission system or,both. Transducers may have been wired incorrectly or the […]

## External System Equivalencing

External System Equivalencing: External System Equivalencing – One of the widely practiced methods used for computational simplification is to divide the given system into three subsystems as shown in Fig. 14.4. One of these is referred to as the ‘internal’ subsystem and consists of those buses in which we are really interested. The second subsystem […]

## Tracking State Estimation of Power Systems

Tracking State Estimation of Power Systems: Tracking State Estimation of Power Systems is important for real time monitoring of the system. As is well known, the voltages of all real system vary randomly with time and should therefore be considered to be stochastic processes. It is thus necessary to make use of the sequential estimation […]

## Static State Estimation of Power Systems

Static State Estimation of Power Systems: Static State Estimation of Power Systems – As noted earlier, for a system with N buses, the state vector x may be defined as the 2N — 1 vector of the N — 1 voltage angles δ2, …, δN and the N voltage magnitudes V1, V2, …, Vn. The […]

## Least Squares Estimation

Least Squares Estimation : The Basic Solution: Least Squares Estimation – As will be seen later in Section 14.3, the problem of power system state estimation is a special case of the more general problem of estimation of a random vector x from the numerical values of another related random vector y with relatively little […]

## Introduction to State Estimation of Power Systems

Introduction to State Estimation of Power Systems: Introduction to State Estimation of Power Systems plays a very important role in the monitoring and control of modem power systems. As in case of load flow analysis, the aim of state estimation is to obtain the best possible values of the bus voltage magnitudes and angles by […]