Smart Grid Transmission Lines Hidden Hazards Identification And Evaluation Research

With the launching of the construction of the smart grid, smart grid transmission lines has gradually developed into a multi-level structural, time-scale, multi-control parametric, dynamical, nonlinear, wide opening, large-scaled, uncertain and the autonomy complex large system. The higher the voltage level, the greater the coverage, the more there is a huge potential safety hazard. If there is a destruction in the port of the linked transmission line, the accident will be rapidly expanded to a wider range. Therefore, the hazards of the study of the smart grid transmission line to ensure the safe and stable operation of the smart grid plays an important role.The new core technology of the smart grid is the sensing technology and online detection technology, a new type of sensor measurement technology and the emergence of intelligent on-line monitoring technology for the study of transmission line provides objective data base safety factors. According to practical transmission lines, this paper comprehensive use of smart transmission line on-line monitoring device for data collection, integration, finally through the analysis of the data to build a set of evaluation index system for the safety of the smart grid transmission line, the index system from safety management, environment, equipment failure three aspects:the selection is more important indicators affecting the safety of transmission lines. Hierarchical analysis model is established, on the basis of expert opinion, to make the expert evaluation more accurate and more reasonable, the triangular fuzzy number to describe the same level related factors between the relative importance of factors on the safety of the smart grid transmission line is analyzed, the transmission line safety index weight is determined. Then, on the basis of the improved level-principal component analysis (pea), and be applied to particular hazards of the transmission line is an area in our country, the relationship between several main parameters that influence the smart grid transmission line safety components, according to the empirical analysis will be classified into several types of hidden hazards, and comprehensive evaluation of hidden hazards, puts forward prevention method.The study of hazards of the smart grid transmission line in this paper have certain breakthrough on the ideas and methods, proposed the existence of hidden hazards for transmission lines.The study provides a new way for hazard prevention work, improves the transmission line hazards management ability. The study offers a new way of thinking for the subsequent study of the transmission line hazards control and become the based premise of the construction of strong smart grid.