Study on the state estimation based on PMU
[1]Jiang Jiandong,Du Yaoheng,Yan Yuehao,et al.Study on the state estimation based on PMU[J].Journal of Zhengzhou University (Engineering Science),2017,38(02):50-.[doi:10.13705/j.issn.1671-6833.2017.02.012]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38
Number of periods:
2017 02
Page number:
50-
Column:
Public date:
2017-04-28
- Title:
- Study on the state estimation based on PMU
- CLC:
- -
- Abstract:
- At present,the phase measurement units were not sufficient for static state estimation in most existing power systems.A novel method was proposed to solve the problem in this paper.Realizing that PMU measurements were more accurate than SCADA ones,the proposed approach estimated PMU unobservable states and PMU observable states separately so as to expand the effect of PMU measurements on the result.For the PMU observable states,they were estimated by PMU measurements using a linear estimator.And the PMU unobservable states were estimated by conventional measurements in a reduced-order nonlinear estimator.When compared with conventional approaches the proposed decoupled method features reduced computational complexity and greater numerical stability.In the end,this method was verified that it had more advantages than weighed least square method and fast decomposition algorithm by simulations on standard IEEE test systems.
- References:
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