Generalized state estimation

Alsaç, O.; Vempati, N.; Stott, B.; Monticelli, A.

doi:10.1109/59.709101

Cited by 253 publications

(106 citation statements)

References 22 publications

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“…After determination of suspicious branch sets and distinguishing the set I which contains error parameters polluted by other error network parameter, the estimation method of the variable step integral is used to estimate the parameters of each branch of set I [11], [12]. The parameters of the line are changed gradually by the step changing and the results of the calculation are obtained by using the state estimation calculation.…”

Section: A Estimation Of Suspicious Line Parametersmentioning

confidence: 99%

Parameters Identification and Estimation in Power System Based on Lagrange Multiplier and Variable Step Integration Algorithm

Wang¹

2016

IJET

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Abstract-The parameter errors of power network can lead significantly deteriorate state estimation results in power system.In this paper, identification of suspicious parameters based on Lagrange multiplier is analyzed firstly. Then, a method of distinguishing the suspicious branch sets is proposed. Finally, the variable step integration algorithm is used to estimate the identified suspicious parameters. The proposed method has been deployed in several provincial power control centers to estimate the identified suspicious parameters. The experimental results illustrate the effectiveness of the proposed algorithm.Index Terms-Power network, parameters identification and estimation, power system, state estimation.

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Section: A Estimation Of Suspicious Line Parametersmentioning

confidence: 99%

Parameters Identification and Estimation in Power System Based on Lagrange Multiplier and Variable Step Integration Algorithm

Wang¹

2016

IJET

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show abstract

“…This has to be considered in order to perform accurate SE. A few papers have been built 16 on this problem such as [32,44,45]. These SE methods work with phase imbalances and with 17 high R/X ratios, where the conventional WLS approaches fail to provide a solution.…”

Section: Phase Imbalance Problemmentioning

confidence: 99%

“…It makes sure that the correct topology information 2 is used in the SE process [13,14]. Other works on topology processor can be found in [15,16]. 3 Observability analysis determines whether the measurements are sufficient to carry out the SE.…”

mentioning

confidence: 99%

“…The measurement data is received 15 from devices such as RTUs, and more recently, PDCs [3]. These measurements, along with other 16 measurements (pseudo measurements and virtual measurements) and information from the 17 observability analysis and the topology processor, are used to estimate the system state. This 18 state is also used by the supervisory control system, which generates the control sequence for the 19 switchgear (circuit breakers).…”

mentioning

confidence: 99%

“…• Update of state vector using equation (16). 18 • Compute the network node voltages using forward-sweep starting from the slack bus and 19 tracing down the network graph.…”

mentioning

confidence: 99%

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