Advanced Materials Research Vols. 986-987

Abstract: A novel CIM-based approach is proposed to realize power enterprise data exchange under heterogeneous IT circumstance. CIM objects encoding specification by XML is introduced in this paper. The object is expressed by XML complex element, and the object’s properties are encoded by simple elements embedded in complex one. In order to solve some data interchange problems, a CIM/XSD schema which applies on CIM data syntax and data validation verification is established by using XML Schema Definition (XSD) technology, and an attribute group “AssociationAttributeGroup” is designed to serialize complex relationships of CIM objects. The attribute group provides syntax support for marshaling linkages of objects in certain two methods: “embedding” and “referring”. The two operators: serialization and deserialization are added to each CIM class. By this way, the CIM objects can make quickly and bidirectional alternation between memory objects and CIM/XML document. The algorithms of the two operators are designed in detail, which can implement complex object set bidirectional conversion efficiently. The case study shows that the CIM object encoding specification, the CIM/XML schema and the algorithms of serialization functions can be applied to exchange and share CIM data in electric power enterprise.

Abstract: According to the special requirement of protective relaying setting in coal mine power system, the research and development of a visualized protective relaying setting software is described in this paper. Firstly, software architectural and its functional module is defined to meet special needs, then a novel setting method based on ‘triggered by setting condition’ and action simulation method based on setting value are proposed. Object-oriented and visualized programming means ensure its users can easily and directly carry out the setting calculation of protective relaying and simulate the protective action. The application and the achievements of good effects at last ensure its rationality.

Abstract: In the future, energy Internet will gradually replace the traditional power network since it enables flexible energy sharing for consumers. Consensus algorithm achieved good performance in solving economic dispatch problem in microgrid system whereas the difficulty is finding a consensus variable. By means of choosing the incremental generator cost of each energy local area network (ELAN) as the consensus variable, the economic dispatch problem can be solved. Using the stochastic gossip-based algorithm as the basic framework, the economic dispatch problem can be solved in a distributed manner. In order to meeting the real-time load requirement in time under the fixed communication topology, the fluctuation of each ELAN will do the consensus update at the same time. The result of a representative case is presented to illustrate the performance of the proposed two-level stochastic gossip-based consensus algorithm.

Abstract: Considering the uncertainty of electronic waste recovery quantity in consumption areas, a fuzzy optimization model for electronic waste reverse logistics network with capacity constraints was constructed to determine the number and location of the facilities, the flows between each facility. A numerical example was provided to demonstrate the feasibility of the model.

Abstract: The thermal power has a large proportion in China’s energy structure, thus, the thermal power plants can be said to be the foundation of our national economy. However, the industry characteristics of thermal power plant themselves make it to be accident-prone. In this paper, we aim at the suddenness and rapidity of emergency, combine the principle of “both prevention and response, combined with the normal and abnormal”, relay on the B/S architecture, run through the four stages of emergency management which are prevention, preparedness, response and recovery, in order to propose the overall design scheme of emergency management system for thermal power plant.

Abstract: In order to solve complex problems of traditional methods used to evaluate the rock fracability, the relationship between fractal dimension, rock brittleness and fracture density these three parameters was studied. The multiple linear regression is reasonable through nine kinds cores. The regression coefficients demonstrate both rock brittleness and surface fracture density play positive roles on fractal dimension value, the larger they are, the better the fracability. Therefore, the two parameters can be converted to consider only one parameter that is the fractal dimension of rock. The larger the fractal dimension, the better the fracability is, that is using fractal dimension represents brittle index and surface density to participate in fracability evaluation.

Abstract: The problem of maintaining the surrounding rock in deep high-stress roadway has been a major subject in coal mining. The analysis of high stress roadway supporting mechanism, and the research on high stress roadway supporting technology as well as its adaptability have important significance in improving the support technology of mine. This paper analyzes the features and reasons of the high stress roadway deformation and failure, and the high stress roadway supporting measure is put forward. At the same time the paper systematically analyzed the guided roadway pressure relief combined support technology which has been used in the transporting roadway in Taoyang Coal Mine and achieved good.

Abstract: The simulation software DeST developed by Air Conditioning Research Group Of Tsinghua University has been used in my thesis. We use this software to simulate an official and experimental building’s energy of air conditioning and heating, then compared to the measured efficiency. We analyzed what has caused the simulated and measured energy consumption data difference, providing a reference for rationality of consumption simulation and optimization of building’s operation management.