New PDF release: Power and Energy: Proceedings of the International

By David Kong

ISBN-10: 1138027820

ISBN-13: 9781138027824

Power and Energy includes 86 chosen papers from the overseas convention on energy and effort (CPE 2014, Shanghai, China, 29-30 November 2014), and offers a variety of topics:

- power administration, making plans and policy-making

- power applied sciences and environment

- strength prospects

- traditional and renewable energy generation

- strength approach management

- strength transmission and distribution

- clever Grid Technologies

Power and Energy should be valuable to execs and teachers drawn to matters on the topic of strength and effort.

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Additional info for Power and Energy: Proceedings of the International Conference on Power and Energy

Example text

The estimate vector xˆ can be solved by Weighted Least Squares (WLS) method. The objective function of the WLS method is as follow J = [ z − h( xˆ )]T W[ z − h( xˆ )] Figure 1. and bus 4 respectively. All these three lines are furnished with branch power flow measurements, and bus 1 with power injection measurement. 1 where σ i2 = measurement error variance of the ith measurement. The function h(( ˆ ) in (3) is the nonlinear function about xˆ which leads nonlinear objective function. h(( ˆ ) is linearized as h( xˆ ) = Hxˆ ⎡∂ ⎢∂ ⎢ ⎢∂ ⎢∂ ⎢∂ ⎢ ⎢∂ ⎢∂ ⎢ ⎢∂ ⎢⎣ (5) (6) To solve (6) for Δˆx and update the estimate xˆ .

39–50. 11. Bao Xinzhong, Zhang Jianbin, Liu Cheng, “A New Method of Ascertaining Attribute Weight Based on Rough Sets Conditional Information Entropy,” Chinese Journal of Management Science, Vol. 17, No. 3, 2009, pp. 131–135. From the research about the comprehensive evaluation method of high wind power penetration transmission grid and the case study, the following conclusions can be drawn: 1 The proposed method can effectively screen the evaluation indices and normalize them into interval [0, 1]; 2.

2013) suggested that branch-current estimators can give estimation accuracies comparable to the voltage ones if an extended version includes the slack bus voltage into the state vector. Choice of measurement weights is an important consideration for state estimators, and the reciprocals of measurement error variances are commonly chosen as the weights for the measurements. Because measurement error varies due to variation of operating conditions of telecommunication 2 FUNDAMENTAL EQUATIONS OF STATE ESTIMATION The purpose of state estimation is to acquire state variables by measurements.

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Power and Energy: Proceedings of the International Conference on Power and Energy by David Kong

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