Advanced Materials Research Vols. 986-987

Abstract: Energy optimization management can realize optimal operation of the microgrid, to meet the requirements of economic operation, power supply reliability and environmental benefit, etcetera. Artificial intelligent algorithms are most widely used to solve this problem currently. In order to avoid the weaknesses of intelligent algorithms, this paper puts forward a simple and practical method based on priority ranking. A energy optimization management model of a grid-connected microgrid is established. Using the priority ranking method, optimal operation schemes under different optimization strategies are figured out. The analysis and discussion of optimal operation schemes and the comparison with the optimization result of particle swarm optimization (PSO) indicate that the method based on priority ranking is simple, effective and practical.

Abstract: With high penetration of distributed generation connected to the grid, distribution system will have some huge impacts, and system reliability calculation models and assessment methods are changing. Based on Monte-Carlo method, a heuristic reliability analysis method for distribution system with distributed generations was proposed in the paper, which focuses on the mode of distributed generation in parallel to system power supply. Functional role of distributed generation in the power distribution system failure and distributed power adapter with load strategies were analyzed in this method. Cases simulation analysis was used to verify its effectiveness.

Abstract: Series compensation can improve the line efficiency significantly, reduce line loss and raise line voltage obviously. The paper introduces the basic principles of series compensation, and studies the influence of series compensation’s installation position on compensation effect, the loss reduction effect of series compensation as well as the influence of series compensation on power flow control.

Abstract: Based on extensive research, introduced the peak load regulation characteristics and capacity of different nuclear power plant (NPP) in this paper. The running mode of NPP participating in peak load regulation of power system, combined operation tactics of NPP with other peaking power source and synergistic scheduling of an integrated power generation system with wind, photovoltaic, energy storage unit and NPP were summarized, technology development trend of NPP participating in peak load regulation of power system was analyzed and forecasted.

Abstract: Energy is the base of modern industrial economy. Basing on the data of cities and industries in Guangdong from 2000 to 2013, this paper analyzes the relationship of energy intensity, FDI and industrialization by regression model. The results show that the industrialization levels of the cities in Guangdong are in accordance with their energy consumption and economic conditions, and Guangdong should focus on the development of “win-win” industries which both increasing industrial output and reducing energy efficiency.

Abstract: FCM is used in many power load classification currently, but it also has some shortcomings. This paper give an algorithm based on Subtractive Clustering and improved Fuzzy C-means Clustering (SUB-FCM) to solve this problem. This algorithm use subtractive clustering to initialize the cluster center matrix, solve the random initialization of FCM, and improve the global search ability, avoid falling into local optima. Experimental analysis found this algorithm also could accelerate the convergence speed, and has better clustering results. It can be applied to power load classification effectively.

Abstract: With the rapid development of economy and technology, enterprises in eco-industrial symbiosis network (EISN) are facing enormous challenges. However, the emergence and development of EISN is closely tied with the energy management in eco-industrial park (EIP). This paper takes institution construction, allocation and new technology of energy management, cooperation performance and long-term cooperation relationship into research and develops a theoretical model of energy management accordingly. We conduct statistical analysis and Structural Equation Modeling using SPSS17.0 and AMOS17.0 based on 241 valid questionnaires from the EISN enterprise managers. The findings indicate institution, allocation and new technology are significantly positively related to cooperation performance, and cooperation performance has positive significant influence on long-term cooperation relationship. Based on the above results, the relative strategies and suggestions of strengthening energy management to enhance cooperation performance are given.

Abstract: Through the analysis of 66kV arc suppression coil smoke accident in Fushun Zhong Zhai 220kV substation,scientifically pointed out that the accident was due to leave hidden trouble in the process of design and manufacture of cause.This paper introduces the working principle of arc suppression coil and use value, and cites several reasons can cause arc suppression coil accidents.This paper introduces in detail the whole process of hoisting core checks after the accident in Liao Ning Yongtai Transformer Manufacturing Co., Ltd,and carefully check the chromatography test data and the operation report before and after the accident, proveing the results of the analysis of the accident is correct.

Abstract: The industrial structure optimization based on energy saving is different from the traditional industrial structure optimization. It relays on the supply and demand of industrial structure. It takes low carbon cycle, energy conservation and environmental protection as guiding principles and maximization of the use of resource and minimization of production from environmental pollution as the goals. Innovation of technology has also be taken as a means to help industry be sustainable, healthy and orderly and to shape an industrial optimization model that economy, society, nature are harmoniously existed. In this paper, we have an analysis of the energy industry structure to point out the shortages of the structure, technology, policy, talent and so on in energy industry. Then based on these shortages we explored the optimal path of industrial structure for energy saving.

Abstract: Double-circuit transmission lines parameters symmetry would affect the normal operation of the transmission lines and relay protection actions directly. This paper analyzes the impacts of three different phase sequence arrangements on parameters symmetry of conventional un-transposed double-circuit lines, and requirements can be met by the parameters symmetry for double-circuit transmission lines with different types and different length. Took practical engineering requirements into consideration, a simple and admissible suggestion on phase sequence arrangements and the transposition modes is given. The research results provide useful guidance and reference for future designs of double-circuit lines, especially for the compact one.