Advanced Materials Research Vols. 960-961

Abstract: An enchanted multi-objective differential evolutional algorithm was proposed, and was applied to solve the environmental economic dispatch problem. Duo to the weakness of random initial population, the orthogonal method was used in the initialization. Based on survival of the fittest, improved differential operation was proposed, combined with the corresponding parameters control method proposed. With the combination of B-coefficient method and restrain dominance, the process of solving equation and selection operation were used to make the individuals meet the equality constrain. Then the algorithm was tested on the IEEE-30 test system, the results are compared with the results of non-dominated genetic algorithm-II、multi-objective differential evolution and the known results in the papers, and the validity is verified. Keywords: Security constrained economic/environmental dispatch,Constrained multi-objective differential evolution,Feasible region and infeasible region

Abstract: The site selection optimization for thermal power plant will directly impact the economic operation and sustainable development. On the basis of constructing index system for site selection of thermal power plant, the method of rough set is applied to obtain the index weights, which are determined only by the system potential information. Through the method of expert decision-making, the quantitative and qualitative information is integrated, and the priority of the alternatives is obtained. The multi-objective model for site selection optimization is built up to balance the economical efficiency and the average comprehensive efficiency. In consideration of decision-makers predilection and heat load demand, the two goals of cost minimum and average comprehensive efficiency maximum are achieved at the same time. Case analysis indicates that the method for site selection optimization of thermal power plant proposed in this paper possesses some advantages, such as scientificity and practicability.

Abstract: Urban power supply system has close relationship with urban public safety. The main risk factors, accident types and the risk degree of failures or accidents in urban power supply system are analyzed. And, it has established the public safety risk assessment system of urban power supply system. In order to show that the assessment system has good applicability in the risk assessment of urban power supply system, the power supply system safety of one urban is assessed using established risk assessment system.

Abstract: This paper presents an iterative power system balance reliability calculating technique ensuring better convergence and faster calculations. The technique is called "supplied demand". Nodal power imbalance is considered as the primary stochastic value under analysis. An analytical solution does not contain probability density functions. It results in faster calculations. Results were verified by Monte Carlo Simulation and showed high accuracy of the technique.

Abstract: Power system load forecasting is an important job for power system scheduling, planning and planning departments. In the long run, the accuracy of load forecasting is closely related to reasonable extension and renovation of power grid development. On the basis of collecting historical load data of a region, considering the co-integration theory and error correction, the author adopts regression analysis to predict of the load development of the region in the next five years, then finally puts forward the new way of enhance load forecasting accuracy in the future.

Abstract: To make the advantages of smart micro-grid in economy and environment to the greatest extent, many countries choose to make detailed research on the business operation mode and technical economy of micro-grid. Based on the related research, this paper generalizes several typical user modes, and then provides a reasonable technical route to study the operation mode and technical economy of micro-grid. For its business operation mode, not only the existing proposals are analyzed, but also are its method of calculating the cost and benefits of this program. Finally, specific plans about how to assess the technical economy are also analyzed.

Abstract: To support the development of the PV industry, the China National Energy Bureau has issued some policies to stimulate the domestic PV market consumption, such as the “Golden Sun Demonstration Project”, “Building Integrated PV” policy. But these policies have some great vulnerability. Many developed countries, such as Germany, Japan, USA; they have some mature PV price settlement policies, such as Feed-in Tariff, Net Metering and Self-Consumption. Therefore, according to the needs of domestic situation, China National Energy Bureau needs to refer to those developed countries’ mature PV price settlement policies to formulate a PV price settlement policy. This policy must suit China PV market. And this policy should guide the development of domestic PV market correctly. Herein, I put forward some recommendations to improve our PV price settlement policy.

Abstract: The Dual-power PV-grid energy system was initiated to reduce the capital installation cost of PV energy system and to make use the lower tariff rate offered at off-peak period. In this paper, the system configuration, architecture and operation of the system are described and discussed. The prototype has been developed and runs 24-hours to supply the load. Meteorological and electrical data collected prove the successful of such system. The system is expected to reduce 89% of electricity bill with estimated cost of energy (COE) of USD1.15/kWh. It is suggested that the dual-power PV-grid system is beneficial to serve as an alternative implementation of the off-grid PV energy system.

Abstract: At present, it universally exists that the financing problem confronts photovoltaic (PV) power plant construction in our country. The PV power plant construction in industry falls into the capital-intensive enterprises with the feature of long-time development, substantial investment needed but relatively fixed income. Thereby, it is greatly appropriate for solar securitization to address the financing needs of the industry with its characteristic and realize diversified financing channels. In this paper, firstly, the feasibility and necessity of ABS financing for PV industry is discussed. Then, we elaborate the current four construction modes of PV power plant, namely, transfer of beneficial interest of power charge, credit increment of financing platform company, BOT (build-operate-transfer), and financing leasing, according to which the financial institution designs the asset-backed securities supported by the beneficial interest of the power plant. Further, we analyze the main problems and challenges of carrying out the ABS business. Countermeasures and suggestion ns are put forward finally.

Abstract: As China domestic photovoltaic (PV) policy forms a closed loop; PV subsidy, grid-connected and other issues have been solving gradually, PV financing problem, which becomes the greatest bottleneck of Chinese PV industry to restrict its development, is highlighted increasingly. In this paper, based on analyzing the current PV financing situation, we discuss the reasons for PV financing difficulties, and put forward some suggestions to help to solve it.