Advanced Materials Research Vols. 805-806

Abstract: With sustained economic development in China and the acceleration of grid construction, the number of new or expanding substations construction has increased dramatically. As a major line of defense to achieve the production of Power Company, security management of relay protection and security automatic devices has a direct impact to the safety production. proposes to build relay protection safety management system based on workflow to deal with the security management requirements of power supply enterprise by analyzing implementation processing of the operation management system and inspection procedures of relay protection in certain power company, and some of which have been in the company management system and achieved good application.

Abstract: In the context of the rapid growth in electricity demand and the expanding of the power grid, grid dispatching and maintenance is becoming increasingly complex. To improve the dispatching and maintenance scheduling in distribution network, the “Intelligent Dispatching and Maintenance Arrangement System for 110kV Power Grid” was developed. This paper describes the design framework and functions of the system, and also briefly introduces the visual development tools-TWaver. Finally, the implementation of visualizing the real-time dynamic display of network power flow as well as the optimization result of maintenance schedule is given and realized a visual and intelligent mode of dispatching and maintenance scheduling effectively. The system has been put into operation in a grid with a stable and reliable performance, and shows the practicality and effectiveness of the system.

Abstract: Various feasible solutions were proposed to solve the problems of debugging condensate polishing system in 600MW unit of Power Plant, such as unsuitable hydraulic test, poor effect of resin regeneration, imperfect program control interlock protection and so on, which ensured safe and steady operation of whole system.

Abstract: This paper simply introduces a smart substation monitoring system which is designed based on the IEC61850 communication standard and uniform background. The project is the integration of online monitoring unit and the intelligent components. It uploads the information of the integrated intelligent components and integrates the online monitoring system based on IEC61850.The paper also analyzes testing basic principles of the substation equipment online monitoring system, designs the basic program of the conformance testing of smart substation equipment online monitoring system, thus illustrate the feasibility of the test program.

Abstract: For energy management problems in smart grid, a hybrid intelligent hierarchical controller based on simulated annealing (SA) and reinforcement learning (RL) is proposed. The SA is used to adjust the parameters of the controller. The RL algorithm shows the particular superiority, which is independent of the mathematic model and just needs simple fuzzy information obtained through trial-and-error and interaction with the environment. By means of learning procedures, the proposed controller can learn to take the best actions to regulate the energy usage for equipments with the features of high comfortable for energy usage and low electric charge meanwhile. Simulation results show that the proposed load controller can promote the performance energy usage in smart grids.

Abstract: In order to constructure and promote the intelligent grid demonstration community project, this paper presents the functional framework and business model of Advanced Metering Infrastructure (AMI). Firstly, the basic conception of AMI is introduced. Secondly, the functional framework of AMI is constructured, which contains metering data management, user interaction, electricity data collection and electrical appliances control. After that, the business model of metering data managing, user interacting, electricity data collecting and electrical appliances controlling are proposed. At last, the whole work in this paper is concluded. The functional framework and business model provide the theoretical reference for the construction of the intelligent grid demonstration community project in China.

Abstract: A third-class model based on condition monitoring is built in this paper. And an assessment system with operating information, the hottest temperature, and electric filed strength as indicators is realized. Then the equation of health level index for electric power equipment in this model is given. In the end, the health level index and life assessment of transformer are analyzed and calculated by example.

Abstract: it is very necessary for electricity market operation to accurate forecasting monthly electricity consumption, influencing factors of electricity consumption, there are non-linear and strong correlation, taking into account the cyclical trend of the monthly electricity consumption, this paper raises a monthly electricity consumption forecast model based on kernel partial least squares and exponential smoothing regression. The forecast model is the first to use kernel partial least squares regression methods to predict the annual electricity consumption, and then combined with exponential smoothing obtained monthly electricity accounts for the proportion of electricity consumption throughout the year for each month of the year to be measured power consumption . Instance analysis and calculation results show that the method has higher prediction accuracy, good practicality and feasibility.

Abstract: This article elaborates the origin and development of energy performance contracting (EPC) and its implementation process, and summarizes the EPCs applications in the field of HVAC. At the same time, it analyzes the model of energy-saving benefit sharing which is applied to HVAC.

Abstract: Poly (3-hexylthiophene) (P3HT) is a wide application in active layer of solar cell. It is a soluble conductive polymer but their mechanical properties are poor and its conductivity is unstable in environmental condition. We add polymethylmethacrylate (PMMA) into active layer to overcome these disadvantages. We investigated the effect of adding PMMA and graphene into solar cell on its characteristics of polymer solar cell. The cell structure was ITO/PEDOT:PSS/P3HT:PCBM:PMMA/Ca/Al. The 0.02, 0.04 and 0.06 weight ratio of PMMA were added into the P3HT:PCBM (1:1 ratio by weight) active layer. The device with 0.04 PMMA exhibits the highest short circuit current density (Jsc, 9.01 mA/cm² ) and power conversion efficiency (PCE, 3.39%). The increases of Jsc and PCE are 26.5% and 49.3%, respectively compared with the device based on the pristine P3HT:PCBM active layer giving Jsc and PCE of 7.12 mA/cm² and 2.27%. Graphene exhibits good electron conductivity, thermal conductivity, chemical stability and strength. We investigated the effect of inserting graphene between hole transfer layer (HTL) of poly (ethylene dioxythiophene) (PEDOT)-polystyrene sulfonic acid (PSS) (PEDOT:PSS) and active layer on the characteristics of polymer solar cell. The cell structure was ITO/PEDOT:PSS/Graphene/P3HT:PCBM:PMMA/Ca/Al. The concentration of graphene solution was 2.2 mg/ml and the graphene layer was coated by spin-coating at 6000 rpm and the weight ratio of PMMA in the P3HT:PCBM active layer was 0.04. The Jsc of device was increased to 9.45 mA/cm² , an increase of 32.7%. The PCE of the device was increased to 3.63%, an increase of 59.9%.