PMU BASED DYNAMIC STATE ESTIMATION TECHNIQUE
Keywords:energy management system (EMS),phasor measurement unit (PMU), Dynamic State Estimation (DSE), supervisory control and data acquisitio n (SCADA)
This paper presents the Boolean algebra into
state estimation to covenant with topological position.
It consents to power system operators to express
consistent state estimation in a intellect that network
topology is recognized while estimation is evaluated.
State Estimation customs one of the primary EMS
functions at the regulator epicenter. Precision of
the state estimation hang on the accuracy of the
measurements used. Hence, it is highly indispensable
to use accurate measuring devices. Phasor
Measurement Units (PMU), with their inherent high
accuracy and the unique ability to measure the voltage
angles, offers a great improvement in the overall
accuracy of the state estimation. Few techniques have
been proposed in the literature for using PMUs in
static state estimation. It is also important to use
PMU data in to Dynamic State Estimation (DSE),
which envisage the state of the system one step ahead.