Robust State Estimation Method for Electric-gas Interconnection of Integrated Energy System Based on Discrete Cuckoo Algorithm
Due to the non-uniform sampling time unit of the measuring device,the error of the GEIES measurement data is relatively large.To improve the accuracy of the GEIES state estimation,a robust state estimation method for the integrated energy system electric-gas interconnection based on the discrete cuckoo algorithm is proposed.The Bayesian measurement model is established to obtain the measurement data of gas network and power grid state estimation,and the completeness of the measurement data set is increased.In order to ensure that the GEIES state estimation results are not affected by noise factors,the Gaussian noise variance is set.The measurement results are substituted into the GEIES state estimation,and the power grid state estimation model and the gas network state estimation model are established re-spectively.The robust state estimation model of the integrated energy system electric-gas interconnection is established by combining the two.The discrete cuckoo algorithm is used to solve the model,and the opti-mal solution of the state estimation is obtained.The result of the example shows that the precision of the state estimation results of the designed method is high,and it can play the role of bad data identification,indicating that its state estimation effect is good.
discrete cuckoo algorithminterated energy systemelectric-gas interconnection state esti-mationBayesian measurement model
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