Electric power system state estimation

Distribution system state estimation-A step towards smart grid

“…The advantage of this 26 approach is that the gain matrix stays constant and symmetric which reduces the computational 27 burden. The disadvantage of all these methods is that they lack robustness and will not converge 28 to a unique solution in the presence of bad measurements (e.g. measurements majorly corrupted 29 by noise) [40].…”

“…This makes the use of TSSE techniques 27 unsuitable for application to DS. This paper is an attempt to encompass various SE techniques 28 applied to DS by reviewing the relevant literature. Many review papers on the subject can be 29 found with the deficiency of putting various techniques together but not mentioning the adequacy 30 of those techniques for DS.…”

“…Once the state is determined, bad data analysis can 14 be done using some statistical measures such as largest normalized residual test [28]. This method 15 is mostly applied in TSSE.…”

“…Provision of estimates for unmonitored parts of the system .i.e. filling in meter measurements 28 for missing or delayed measurements; 29 5. Estimation of network parameters based on redundancy in measurements.…”

Graph Theoretic Approach to Solve Measurement Placement Problem for Power System State Estimation

“…Within the energy management system, state estimation is a key function for building network real time model that is static mathematical representation of current condition of an interconnected power system [7]. State estimation is a standard practice at power system control centres, responsible for providing reliable real-time database for analysis, control and optimization functions.…”