Research On Innovative Design Of Substation Online Noise Monitoring Device

In recent years,with the continuous expansion of urban edges and the construction and development of transmission and distribution networks,some substations have to be built in residential areas,and the resulting noise problem of substations has become increasingly prominent and one of the focal issues of environmental complaints.There are no products on the market that are specifically designed for such problems,and the applicability of existing products is not sufficient to meet the demand for online monitoring of substation noise,and there are problems such as limited automation and insufficient noise monitoring.Therefore,this paper sets out to solve the above problems and design a substation noise online monitoring device that meets the needs of users and production.First,based on the analysis of contextual elements,a usage context model is constructed from the perspective of installers and substation inspectors.By decomposing the contextual activities,extracting the elemental information of the main nodes and exploring the potential user needs;using the KJ method to organize the needs,followed by quantifying the need items through the hierarchical analysis method,determining the user need weights,and constructing a user need hierarchy model based on the ranking of the weight values.Secondly,according to the design steps of the product functional principle scheme,refer to the user needs hierarchy model,systematically analyze the function and structure principle of the relevant typical products,and obtain the solution of the product functional elements;complete the innovative design of the functional principle of the substation noise online monitoring device through the black box diagram,functional tree and functional structure diagram,and apply the morphological matrix to solve the functional principle,so as to output the functional principle scheme.Then,an objective and reasonable multi-dimensional evaluation index system is constructed by using credibility screening;in order to reduce the influence of subjectivity and inconsistency on the decision results,AHP and entropy weighting method are used to determine the index weights,and finally the Lagrange multiplier method is used to obtain the comprehensive weights of each evaluation index;on this basis,the rough number TOPSIS multi-attribute group decision method is applied to preferably select the functional principle scheme with the highest user On the basis of this,the function principle scheme with the highest user satisfaction is selected by applying the rough number TOPSIS multi-attribute group decision method.Finally,the overall dimensions of the substation noise monitoring device were determined based on the ergonomic analysis,and Creo,Key Shot and Photoshop were used to express the structure modeling and appearance modeling of the selected solution.Fuzzy comprehensive evaluation was used to select the most aesthetically pleasing solution from multiple modeling solutions,and to analyze the functional principle and structure of the solution.Further,a comprehensive evaluation of the user’s needs satisfaction is conducted to illustrate the feasibility and rationality of the scheme.Based on the actual project,this paper presents a feasible solution by applying various design methods and decision models from the demand of substation noise online monitoring,which is a reference value for the subsequent systematic design methods and decision processes of electromechanical products.